REFRIGERATOR

Abstract

 The present invention relates to a refrigerator. According to an aspect of the present invention, the refrigerator may include: an ice making chamber provided in a door or a storage chamber, a cooler for supplying cold to the storage chamber, a cell which is provided in the ice making chamber and in which a material is phase-changed from a liquid phase to a solid phase; a first tray which provides a first wall forming at least one portion of the cell; and a second tray which provides a second wall forming the other portion of the cell. The refrigerator may include: a drive part for providing a drive force to move the second tray; and a lift which is provided to be able to be in contact with the second tray and brings the second tray into close contact with the first tray on the basis of additional driving of the drive part.

Description

Technical Field

[0001] The present specification relates to an ice maker and/or a refrigerator equipped with an ice maker.

Background Art

[0002] Generally, a refrigerator is a home appliance capable of storing food at low temperatures in an internal storage space shielded by a door, and by cooling the inside of the storage space using cold, stored food may be kept in a refrigerated or frozen state.

[0003] Typically, a refrigerator is provided with an ice maker for making ice. The ice maker generates ice by receiving water supplied from a water source or a water tank into a tray and then cooling the water. In addition, the ice maker may release the ice from the ice tray using a heating method or a twisting method. An ice maker that automatically supplies water and releases ice in this manner is formed to open upward to scoop out the molded ice. Ice produced in an ice maker of such a structure has at least one flat surface, such as a crescent shape or a cubic shape.

[0004] On the other hand, if the ice is formed in a spherical shape, it may be more convenient to use the ice and may provide a unique user experience. Furthermore, during storage of the manufactured ice, sticking between ice pieces may be minimized by reducing the contact area between the ice pieces. Recently, attempts have also been made to manufacture transparent ice.

Summary of the Invention

Technical Problem

[0005] An object of an embodiment of the present invention is to provide an ice maker and/or a refrigerator equipped with an ice maker that may improve the sealing of a tray forming a cell.

[0006] An object of an embodiment of the present invention is to provide an ice maker and/or a refrigerator equipped with an ice maker having a lift capable of pressing any one of the first and second trays in a direction toward the other so that the first and second trays may be in close contact at an ice-making position.

[0007] An object of an embodiment of the present invention is to provide an ice maker and/or a refrigerator equipped with an ice maker in which a tray support and a lift are coaxially connected to a driving part, and a difference is provided between the size of a through-hole of the tray support and the size of a through-hole of the lift so that the lift may additionally move.

[0008] An object of an embodiment of the present invention is to provide an ice maker and/or a refrigerator equipped with an ice maker in which a lift is provided to be contactable with one surface (for example, a bottom surface) of one of the first and second trays and lifts the one surface (for example, the bottom surface) so that the one tray is brought into close contact with the other tray.

[0009] An object of an embodiment of the present invention is to provide an ice maker and/or a refrigerator equipped with an ice maker in which a protrusion is provided on the lift and disposed to be contactable with one tray, and either the protrusion or the one tray is made of a flexible material to be deformable, thereby facilitating close contact between the first and second trays.

Technical Solution

[0010] An embodiment of the present invention may include a tray forming a cell and a lift disposed to be contactable with the tray and pressing the tray.

[0011] The tray includes a first tray forming a portion of the cell and a second tray forming another portion of the cell, and the lift may improve the sealing of the first and second trays by pressing one of the first and second trays toward the other tray side.

[0012] The ice maker may include a driving part that provides a pressing force to the first and second trays by additionally moving (for example, rotating) the lift while the first and second trays are in an ice-making position.

[0013] The lift may contact one of the first and second trays and press the one tray toward the other tray side.

[0014] A first part of the lift contacting the one tray and a second part of the one tray contacting the lift may be made of different materials.

[0015] Any one of the first and second parts may be made of a material having higher rigidity than the other.

[0016] Any one of the first and second parts may be made of a material having higher elasticity than the other.

[0017] One of the first and second parts may be made of a plastic material, and the other may be made of a rubber or silicone material.

[0018] A refrigerator according to an embodiment of the present invention may include a driving part and a shaft that is moved by the driving part and to which the lift is coupled.

[0019] The refrigerator may include a tray supporter coupled to the shaft and supporting the tray.

[0020] The tray supporter and the lift move according to the driving of the driving part, and while the tray supporter is in a stopped state, the lift may additionally move according to an additional driving of the driving part.

[0021] For the additional movement of the lift, a holder for coupling the tray supporter and the lift to the shaft may be included.

[0022] The holder may include an insertion bar passing through a first through-hole of the lift and a second through-hole of the tray supporter.

[0023] The second through-hole may be formed larger than the first through-hole.

[0024] The holder may include a protrusion provided on an outer circumferential surface of the insertion bar and fitted in a size matching the first through-hole.

[0025] The holder may be coupled to match the size of the first through-hole so as not to additionally move (for example, rotate) within the first through-hole.

[0026] The sum of the cross-sectional area of the insertion bar and the cross-sectional area of the protrusion may be formed slightly smaller than the area of the first through-hole to the extent that the insertion bar and the protrusion are fitted to match the first through-hole.

[0027] The holder may additionally move (for example, rotate) in a state of being inserted into the second through-hole without interfering with the tray supporter.

[0028] The sum of the cross-sectional area of the insertion bar and the cross-sectional area of the protrusion may be formed smaller than the second through-hole so that the holder may additionally move within the second through-hole.

[0029] The holder may additionally move until the protrusion interferes with an end of the second through-hole.

[0030] The second tray may be pressed toward the first tray side by the lift.

[0031] The refrigerator includes a tray cover covering at least a portion of the second tray, and the tray cover may include a protrusion accommodating part for receiving a protrusion of the second tray.

[0032] The refrigerator may include a stopper contacting the protrusion accommodating part.

[0033] The stopper may be coupled to a bracket provided in the refrigerator.

[0034] The protrusion of the second tray is in contact with the lift and may be provided to be deformable inside the protrusion accommodating part by the movement of the lift.

[0035] In one aspect of the present invention, a refrigerator may include a storage space in which food is stored, a door that opens and closes the storage space, an ice-making space provided in the door or the storage space, a cooler for supplying cold to the storage space, a cell provided in the ice-making space and defining a space where a substance undergoes a phase change from a liquid phase to a solid phase, a first tray providing a first wall forming at least a portion of the cell, and a second tray providing a second wall forming another portion of the cell.

[0036] The refrigerator may include a driving part providing a driving force to move the second tray; and a lift provided to be contactable with the second tray and bringing the second tray into close contact with the first tray based on additional driving of the driving part.

[0037] For example, the lift may perform a linear motion or a rotational motion to bring the second tray into close contact with the first tray.

[0038] To allow any one of the lift and the second tray to be deformed, a first part of the lift contacting the second tray and a second part of the second tray contacting the lift may be made of different materials.

[0039] Any one of the first part and the second part may be made of a material having higher rigidity or elasticity than the other.

[0040] Any one of the first part and the second part may be made of a plastic material, and the other may be made of a rubber or silicone material.

[0041] The lift may press the second tray at a plurality of points.

[0042] The lift may include a support bar extending in a longitudinal direction of the second tray and a protrusion protruding from the support bar to contact the second tray.

[0043] The ice maker may include a shaft that is moved by the driving part and to which the lift is coupled, and a holder connecting the shaft and the driving part and coupled to a first through-hole of the lift.

[0044] The ice maker may include a second tray supporter supporting the second tray and forming a second through-hole into which the holder is inserted.

[0045] The cross-sectional area of the holder may be smaller than the size of the second through-hole so that the holder may idle or rotate within a predetermined angle within the second through-hole during additional driving of the driving part.

[0046] During additional driving of the driving part, the second through-hole may be formed larger than the first through-hole so that the lift may idle.

[0047] The holder may include an insertion bar inserted into the shaft and a protrusion protruding from an outer circumferential surface of the insertion bar to be inserted into the first through-hole.

[0048] The lift includes a support bar supporting the second tray and an extension part provided at an end of the support bar and forming the first through-hole, and the lift may be provided to be movable with respect to the center of the extension part.

[0049] The lift includes a first pressing device pressing a first part of the second tray and a second pressing device spaced apart from the first pressing device in a width direction of the second tray, and the second pressing device may press a second part of the second tray.

[0050] The ice maker may include a holder connecting the lift and the driving part so that the lift may additionally move without the second tray moving during additional driving of the driving part.

[0051] The refrigerator includes a second tray cover covering at least a portion of the second tray, and the second tray cover may include a protrusion accommodating part for receiving a tray protrusion provided on the second tray.

[0052] The lift may contact the second tray to press the tray protrusion toward the protrusion accommodating part side.

[0053] The refrigerator includes a bracket coupled to the refrigerator or the door and a stopper coupled to the bracket, and the stopper may contact the protrusion accommodating part.

[0054] The tray protrusion and the stopper may be provided on opposite sides with respect to the surface of the protrusion accommodating part so that the stopper provides a reaction force when the tray protrusion presses the protrusion accommodating part.

[0055] In another aspect, a refrigerator may include a first tray providing a first wall forming at least a portion of a cell, a second tray providing a second wall forming another portion of the cell, a driving part providing a driving force to move the second tray, a lift provided to be contactable with the second tray and forming a through-hole, and a holder inserted into the through-hole to connect the driving part and the lift.

Advantageous Effects of the Invention

[0056] According to an embodiment of the present invention, the sealing of the tray forming the cell may be improved by the lift.

[0057] According to an embodiment of the present invention, a lift capable of pressing any one of the first and second trays in a direction toward the other is provided, so that the first and second trays may be in close contact at an ice-making position.

[0058] According to an embodiment of the present invention, a tray support and a lift are coaxially connected to the driving part, and a difference is provided between the size of a through-hole of the tray support and the size of a through-hole of the lift, so that the lift may additionally move.

[0059] According to an embodiment of the present invention, a lift is provided to be contactable with one surface (for example, a bottom surface) of one of the first and second trays, and the one surface (for example, the bottom surface) may be lifted by the lift so that the one tray may be brought into close contact with the other tray.

[0060] According to an embodiment of the present invention, a protrusion is provided on the lift and disposed to be contactable with one tray, and any one of the protrusion and the one tray is made of a flexible material to be deformable, thereby facilitating close contact between the first and second trays.

Brief Description of Drawings

[0061] 

FIG. 1 is a view showing a refrigerator according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an ice maker according to an embodiment of the present invention.

FIG. 3 is a front view of the ice maker of FIG. 2.

FIG. 4 is an exploded perspective view of an ice maker according to an embodiment of the present invention.

FIG. 5 is a plan view showing the configuration of first and second tray assemblies and a power transmission device according to an embodiment of the present invention.

FIG. 6 is a plan view showing the configuration of a second tray assembly and a power transmission device according to an embodiment of the present invention.

FIG. 7 is an exploded perspective view showing the configuration of a second tray assembly and a power transmission device according to an embodiment of the present invention.

FIG. 8 is a perspective view showing the configuration of a second tray according to an embodiment of the present invention.

FIG. 9 is a perspective view showing the configuration of a second tray supporter according to an embodiment of the present invention.

FIG. 10 is a perspective view showing the configuration of a second tray cover according to an embodiment of the present invention.

FIG. 11 is a perspective view showing the configuration of a driving part and a power transmission device according to an embodiment of the present invention.

FIG. 12 is a perspective view of a lift according to an embodiment of the present invention.

FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 12.

FIG. 14 is a cross-sectional view of the ice maker taken along line 14-14 of FIG. 2.

FIG. 15 is a partial side view of the ice maker showing a state in which a holder is coupled to a lift and a second tray supporter according to an embodiment of the present invention.

FIG. 16 is a view showing a state in which the holder and the lift have additionally moved from the state in FIG. 15.

FIG. 17 is a left cross-sectional view of the ice maker showing the additional movement of the lift according to an embodiment of the present invention.

FIG. 18 is a right cross-sectional view of the ice maker showing the additional movement of the lift according to an embodiment of the present invention.

FIG. 19 is a cross-sectional view of the ice maker showing a state in which the second tray starts to move to an ice-releasing position according to an embodiment of the present invention.

FIG. 20 is a cross-sectional view of the ice maker showing a state in which ice is being released from the second tray at an ice-releasing position according to an embodiment of the present invention.

Detailed Description of the Invention

[0062] Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

[0063] In describing the components of the embodiment of the present invention, terms such as first, second, A, B, a, and b may be used. These terms are only for distinguishing the component from other components, and the essence, order, or sequence of the corresponding component is not limited by the term. When it is described that a component is "connected," "coupled," "supported," or "joined" to another component, the component may be directly "connected," "coupled," "supported," or "joined" to the other component, but it should be understood that another component may also be "connected," "coupled," "supported," or "joined" between each component.

[0064] Meanwhile, in describing the components of the embodiment of the present invention, the meaning of the description "at least one of components A and B" may be understood as including three embodiments meaning (1) A alone, (2) B alone, and (3) both A and B.

[0065] Also, in describing the components of the embodiment of the present invention, the meaning of the description "at least one of components A or B" may be understood as including three embodiments meaning (1) A alone, (2) B alone, and (3) both A and B. That is, the meaning of the description "at least one of components A or B" may be the same as the meaning of the description "at least one of components A and B."

[0066] The refrigerator according to an embodiment of the present invention may include a storage space where items (for example, food, medicine, etc.) are stored. The refrigerator may include a door for opening and closing the storage space. In the refrigerator, the items may be stored in a refrigerated or frozen state. The refrigerator may include an ice-making space in which at least a part of an ice maker to be described later is disposed. The ice-making space may be provided in the storage space and/or the door.

[0067] An ice maker according to an embodiment of the present invention may include a cell which is a space where the item (for example, water) undergoes a phase change into ice. The ice maker may include a tray assembly. The tray assembly may include a tray, a tray case, or both the tray and the tray case. The tray may include a wall forming at least a part of the cell. The tray case may include a wall connected to the tray, coupled to the tray, supported by the tray, or surrounding at least a part of the tray. The tray case may include at least one of a tray cover or a tray supporter. The tray assembly may include a first tray assembly and a second tray assembly. The first tray assembly may include a first tray, a first tray case, or both the first tray and the first tray case. The first tray may include a wall forming a first part of the cell. The first tray case may include a wall connected to the first tray, coupled to the first tray, supported by the first tray, or surrounding at least a part of the first tray. The first tray case may include at least one of a first tray cover or a first tray supporter. The second tray assembly may include a second tray, a second tray case, or both the second tray and the second tray case. The second tray may include a wall forming a second part of the cell. The second tray case may include a wall connected to the second tray, coupled to the second tray, supported by the second tray, or surrounding at least a part of the second tray. The second tray case may include at least one of a second tray cover or a second tray supporter. The ice maker may include a bracket. The bracket may cover at least a part of the tray assembly or accommodate at least a part of the tray assembly.

[0068] The ice maker and/or the refrigerator may include a pusher. The pusher may be provided to press the ice and/or the tray assembly so that the ice is separated from the tray assembly. The pusher may include a first edge on which a surface for pressing the ice and/or the tray assembly is formed. The pusher may include a bar extending from the first edge. The pusher may include a second edge located at an end of the bar.

[0069] A pressing part that the pusher presses may be formed on the tray assembly, and the pusher may be configured to apply pressure to one surface of the tray assembly. The pusher may be defined as a non-penetrating pusher.

[0070] The first edge of the pusher may move along a surface of a tray defining at least a part of the cell from a first point outside the cell. The pusher may be defined as a movable pusher. The pusher may be connected to a driving part, a rotation shaft of the driving part, or a tray assembly movable by being connected to the drive part.

[0071] The pusher may additionally press the pressing part after contacting the pressing part at the first point outside the cell. The pusher may be coupled to a fixed end. The pusher may be defined as a fixed pusher.

[0072] The ice maker and/or the refrigerator may include a heater. The heater (for example, a wire heater, a cord heater, a radiant heater, etc.) may supply heat to the cell and/or the storage space. The heater may contact the tray assembly and/or the cell to directly supply heat. The heater may supply heat indirectly (for example, hot or warm air) in a state where the heater is not connected to the tray assembly and/or the cell.

[0073] The ice maker and/or the refrigerator may include a cooler (for example, an evaporator, a refrigerant pipe, a refrigerant valve, a fan, a damper, a thermoelectric module, etc.). The cooler may contact the tray assembly and/or the cell to directly supply cold. The cooler may supply heat (for example, cold or cold air) indirectly in a state where the cooler is not connected to the tray assembly and/or the cell.

[0074] The ice maker and/or the refrigerator may include a temperature sensor. The temperature sensor may be provided to detect a temperature of an item (for example, water) or ice in the cell.

[0075] The ice maker and/or the refrigerator may include a driving device. The driving device may be connected to the tray assembly and/or the pusher.

[0076] The refrigerator of the present invention may include a tray assembly forming a part of a cell which is a space where water undergoes a phase change into ice, a cooler for supplying cold to the cell, a water supply part for supplying water to the cell, and a controller. The refrigerator may further include a driving part capable of moving the tray assembly. The refrigerator may further include a storage space in which food is stored in addition to the cell. The refrigerator may further include a cooler for supplying cold to the storage space. The refrigerator may further include a temperature sensor for sensing a temperature in the storage space. The controller may control at least one of the water supply part or the cooler. The controller may control at least one of the heater or the driving part.

[0077] After moving the tray assembly to an ice-making position, the controller may control the cooler to supply cold to the cell. After the generation of ice in the cell is completed, the controller may control the tray assembly to move in a forward direction to an ice-releasing position to take out the ice from the cell. After ice-releasing is completed, the controller may control the tray assembly to move in a reverse direction to a water supply position and then start water supply, and after the water supply is completed, the controller may control the tray assembly to move to the ice-making position.

[0078] In the present invention, the cell is located inside the storage space and may be defined as a space where water undergoes a phase change into ice. A circumference of the cell is independent of a shape of the cell and means an outer surface of the cell. In another aspect, an outer peripheral surface of the cell may mean an inner surface of a wall forming the cell. The center of the cell refers to the center of gravity or the volumetric center of the cell. The center may pass through the line of symmetry of the cell.

[0079] In the present invention, a tray may be defined as a wall partitioning the cell and the inside of the storage space. The tray may be defined as a wall forming at least a portion of the cell. The tray may be configured to surround the cell entirely or only partially.

[0080] In the present invention, a tray case may be located between the tray and the storage space. That is, the tray case may be disposed such that at least a portion of the tray case surrounds the tray. A plurality of tray cases may exist. The plurality of tray cases may contact each other. The tray case may contact the tray to support at least a portion of the tray.

[0081] In the present invention, the refrigerator may include at least one tray assembly configured to be movable by being connected to a driving part. The driving part is configured to move the tray assembly in at least one axial direction among X, Y, or Z axis, or to perform a movement motion centered on at least one of the X, Y, or Z axis. The present invention may include a refrigerator having the remaining configurations except for the driving part and the power transmission member connecting the driving part and the tray assembly from the contents described in the detailed description. In the present invention, the tray assembly may be moved in a first direction.

[0082] In the present invention, the refrigerator may include at least one tray assembly in which the heater is disposed. The heater may be disposed near the tray assembly to heat a cell formed by the tray assembly. The heater may include a heater (hereinafter referred to as a "transparent ice heater") controlled to be turned on during at least a part of a period while the cooler supplies cold so that bubbles dissolved in water inside the cell move from a portion where ice is generated toward water in a liquid state to generate transparent ice. The heater may include a heater (hereinafter referred to as an "ice-releasing heater") controlled to be turned on during at least a part of a period after ice making is completed so that ice may be easily separated from the tray assembly. The refrigerator may include a plurality of transparent ice heaters. The refrigerator may include a plurality of ice-releasing heaters. The refrigerator may include both a transparent ice heater and an ice-releasing heater. In this case, the controller may control the heating amount of the ice-releasing heater to be greater than the heating amount of the transparent ice heater.

[0083] The present invention may include a pusher having a first edge formed with a surface that presses at least one surface of the tray assembly so that ice is easily separated from the tray assembly. The pusher may include a bar extending from the first edge and a second edge located at an end of the bar. The controller may control at least one of the pusher or the tray assembly to move so that the position of the pusher is changed.

[0084] In the present invention, the cell may be cooled by the cooler that cools the storage space. For example, the storage space where the cell is located is a freezing space that may be controlled at a temperature lower than 0 degrees, and the cell may be cooled by a cooler that cools the freezing space.

[0085] In the present invention, the cell may be cooled by a cooler other than the cooler that cools the storage space. For example, the storage space where the cell is located is a refrigerating space that may be controlled at a temperature higher than 0 degrees, and the cell may be cooled by a cooler other than the cooler that cools the refrigerating space. That is, the refrigerator includes a refrigerating space and a freezing space, and the cell may be located inside the refrigerating space and cooled by a cooler that cools the freezing space.

[0086] The cell may be located in a door that opens and closes the storage space.

[0087] In the present invention, the cell may be cooled by a cooler without being located inside the storage space. For example, the entire storage space formed inside the outer case may be the cell.

[0088] In the present invention, degree of deformation resistance represents the degree to which an object resists deformation caused by an external force applied to the object, and is defined as a value determined by the shape including the thickness of the object, the material of the object, and the like.

[0089] Meanwhile, from the perspective of the material of the object, a high degree of deformation resistance of the object may mean that the rigidity of the object is high. The thermal conductivity may be an inherent material property of the object. Even when the material of the object is the same, the degree of deformation resistance may vary depending on the shape of the object or the like.

[0090] In the present invention, degree of restoration represents the degree to which an object deformed by an external force is restored to the shape of the object before the external force was applied after the external force is removed, and is defined as a value determined by the shape including the thickness of the object, the material of the object, and the like.

[0091] In the present invention, coupling force represents the degree of coupling between a plurality of trays, and is defined as a value determined by the shape including the thickness of the tray, the material of the tray, the magnitude of the force coupling the trays, and the like.

[0092] In the present invention, adhesion refers to a degree to which ice and a container adhere during a process in which water contained in the container becomes ice, and is defined as a value determined by a shape including a thickness of the container, a material of the container, an elapsed time after becoming ice in the container, and the like.

[0093] The degree of deformation resistance of the tray against an external force may be configured to be less than the degree of deformation resistance of the tray case against the external force, or the rigidity of the tray may be less than the rigidity of the tray case. The tray assembly may be configured such that while the tray is allowed to be deformed by the external force, the deformation of the tray case surrounding the tray is reduced.

[0094] Hereinafter, specific embodiments of the refrigerator of the present invention will be described with reference to the drawings.

[0095] FIG. 1 is a view showing a refrigerator according to an embodiment of the present invention.

[0096] Referring to FIG. 1, a refrigerator according to an embodiment of the present invention may include a cabinet 14 including a storage space and a door for opening and closing the storage space.

[0097] The storage space may include a refrigerating space 18 and a freezing space 32. The refrigerating space 18 is disposed at an upper side, and the freezing space 32 is disposed at a lower side, so that each storage space may be individually opened and closed by each door. As another example, it is also possible that the freezing space is disposed at the upper side and the refrigerating space is disposed at the lower side. Alternatively, it is also possible that the freezing space is disposed on one of the left and right sides and the refrigerating space is disposed on the other side.

[0098] The freezing space 32 may be divided into first and second spaces (for example, a lower space and an upper space), and a drawer 40 that may be moved in and out of the first space may be provided in the first space.

[0099] The door may include a plurality of doors 10, 20 and 30 for opening and closing the refrigerating space 18 and the freezing space 32. The plurality of doors 10, 20 and 30 may include some or all of doors 10 and 20 that open and close the storage space and a door 30 that opens and closes the storage space in a sliding manner. The freezing space 32 may be provided to be separated into two spaces even if the freezing space 32 may be opened and closed by one door 30.

[0100] In this embodiment, the freezing space 32 may be referred to as a first storage space, and the refrigerating space 18 may be referred to as a second storage space. An ice maker 200 capable of manufacturing ice may be provided in the freezing space 32. The ice maker 200 may be located, for example, in a partial space (for example, an upper space) of the freezing space 32.

[0101] An ice bin 60 in which ice produced in the ice maker 200 drops and is stored may be disposed on one side (for example, a lower side) of the ice maker 200. A user may take the ice bin 60 out of the freezing space 32 and use the ice stored in the ice bin 60. The ice bin 60 may be coupled to one side (for example, an upper side) of a wall partitioning the first space (for example, an upper space) and the second space (for example, a lower space) of the freezing space 32.

[0102] Although not shown, the cabinet 14 is provided with a duct for supplying cold to the ice maker 200 (not shown). The duct guides cold heat-exchanged with refrigerant flowing through an evaporator toward the ice maker 200. For example, the duct is disposed at one side (for example, a rear side) of the cabinet 14 and may discharge cold toward the other side (for example, a front side) of the cabinet 14. The ice maker 200 may be located at one side (for example, a front side) of the duct. Without being limited, an outlet of the duct may be provided on one or more of a first side wall (for example, a rear side wall) and a second side wall (for example, an upper side wall) of the freezing space 32.

[0103] Although it has been described above that the ice maker 200 is provided in the freezing space 32, a space where the ice maker 200 may be located is not limited to the freezing space 32, and the ice maker 200 may be located in various spaces as long as cold may be supplied. Therefore, hereinafter, it will be described that the ice maker 200 is located in the storage space.

[0104] FIG. 2 is a perspective view showing an ice maker according to an embodiment of the present invention, FIG. 3 is a front view of the ice maker of FIG. 2, and FIG. 4 is an exploded perspective view of an ice maker according to an embodiment of the present invention.

[0105] Referring to FIGS. 2 to 4, the ice maker 200 according to an embodiment of the present invention may include a bracket 220 for supporting a tray assembly. Each component of the ice maker 200 is provided inside or outside the bracket 220, so that the ice maker 200 may constitute a single assembly.

[0106] The bracket 220 may be coupled to at least one surface of the storage space. The bracket 220 may include a first wall 221 in which a through-hole 226 is formed. At least a portion of the first wall 221 extends in a first direction (for example, a horizontal direction) and may be coupled to one surface of the storage space.

[0107] A fastening hole 228 through which a fastening member passes may be formed on a corner side of the first wall 221. The bracket 220 may be coupled to the storage space through the fastening member coupled to the fastening hole 228.

[0108] The first wall 221 may include a guide protrusion 228a for guiding an electric wire connected to the ice maker. A plurality of guide protrusions 228a are provided and may be provided in various shapes according to an extension direction of the electric wire.

[0109] The bracket 220 may include two second walls 222 extending in one direction (for example, downward) from both sides of the first wall 221. A space between the two second walls 222 may form a space where the tray assembly is disposed.

[0110] One of the two second walls 222 may cover the driving part 510. The other of the two second walls 222 functions as a prevention plate for preventing ice dropping into the ice bin 60 or ice stored in the ice bin 60 from falling, and may form a wall through-hole 222a through which at least a part of the other of the two second walls 222 passes to prevent frost formation.

[0111] The bracket 220 may include a third wall 223 protruding from the first wall 221. The third wall 223 may protrude from the first wall 221 in a direction toward the storage space. The third wall 223 may include a first part 223a extending in a direction corresponding to one direction (for example, a front-rear direction) of the storage space and a second part 223b extending in another direction (for example, a left-right direction) from one end (for example, a front end) of the first part 223a.

[0112] The third wall 223 may include a hook 223c coupled to one surface (for example, an upper surface) of the storage space. For example, the hook 223c may be provided on the second part 223b.

[0113] A water supply part 240 may be coupled to the second part 223b. The water supply part 240 includes a hook 248, and the hook 248 may be caught at one end (for example, an upper end) of the second part 223b.

[0114] The bracket 220 may be formed with a suction hole 224a through which cold of the storage space is introduced toward the tray assembly. The suction hole 224a may be formed in a side wall of the bracket 220. For example, the suction hole 224a may be formed in a space between the second wall 222 and the third wall 223. From another aspect, the suction hole 224a may be formed by penetrating at least a part of the second wall 222.

[0115] Cold may be sucked from a side of the bracket 220 toward the tray assembly through the suction hole 224a to act as cold for ice making.

[0116] The through-hole 226 of the first wall 221 may function as an outlet through which cold that has passed through the tray assembly is discharged. A plurality of through-holes 226 may be provided and formed in the first direction (for example, a horizontal direction) of the first wall 221.

[0117] At least a portion of a water supply part 240 may be disposed in a first through-hole among the plurality of through-holes 226. The water supply part 240 may extend toward the tray assembly by passing through the first through-hole while being supported by the third wall 223.

[0118] The plurality of through-holes 226 may include a second through-hole and a third through-hole formed on both sides of the first through-hole. Through the second through-hole and the third through-hole, one end (for example, an upper end) of the tray assembly may be exposed to one side (for example, an upper side) of the bracket 220.

[0119] The bracket 220 may include a guide wall 225 that guides the cold sucked through the suction hole 224a toward the tray assembly. The guide wall 225 may extend from the third wall 223 toward a center of the bracket 220.

[0120] As an example, the guide wall 225 may include a portion extending roundly from the third wall 223 toward the cell 360. The cell 360 may be disposed closer to the other end (for example, a front end) than to one end (for example, a rear end).

[0121] The bracket 220 may include a blocking plate 227a that prevents the cold sucked through the suction hole 224a from being discharged from the bracket 220 without heading toward the tray assembly. As an example, the blocking plate 227a may extend in one direction (for example, upward) from the first wall 221. The blocking plate 227a is spaced apart in one direction (for example, laterally) from the suction hole 224a, and a plurality of cells 360 may be disposed between the suction hole 224a and the blocking plate 227a.

[0122] That is, the blocking plate 227a is disposed further away from the suction hole 224a than the cell 360 that is furthest from the suction hole 224a, thereby preventing a phenomenon in which cold bypasses the plurality of cells 360 and is discharged from the bracket 220.

[0123] The bracket 220 may include a stopper 250 that contacts the second tray assembly. The stopper 250 extends in another direction (for example, downward) from the first wall 221 and may be disposed to contact at least a portion of the second tray assembly. The stopper 250 may have a bar shape.

[0124] A stopper coupler 227 to which the stopper 250 is coupled may be included at one end (for example, a lower end) of the first wall 221. The stopper 250 extends in one direction (for example, downward) from the stopper coupler 227 and may contact the second tray assembly.

[0125] When the second tray 400 moves in a forward direction and is in an ice-making position, a peripheral portion of the second tray assembly may contact the stopper 250. With this configuration, additional movement of the second tray 400 may be limited by the stopper 250.

[0126] To allow the stopper 250 and the second tray assembly to be in close contact, a first part of the stopper 250 and a second part of the second tray assembly may be made of different materials. The first part of the stopper 250 and the second part of the second tray assembly may contact each other. The second part of the second tray assembly may include a protrusion accommodating part 486 of the second tray cover 480.

[0127] For example, the first part of the stopper 250 may be made of a metal or plastic material, and the second part of the second tray assembly may be made of a flexible material that is softer than the stopper 250. As another example, the first part of the stopper 250 may be made of a flexible material, and the second part of the second tray assembly may be made of a metal or plastic material that has higher rigidity than the stopper 250.

[0128] A plurality of stoppers 250 may be provided. The plurality of stoppers 250 may be disposed along the rim of one surface (for example, a bottom surface) of the first wall 221. For example, six stoppers 250 may be provided (250a to 250f, refer to FIG. 5). However, the number of stoppers 250 may not be limited thereto.

[0129] In this way, due to the configuration of the second tray assembly and the stoppers, the second tray 400 may be moved slightly further by the driving part 510 than the point where the second tray 400 started contacting the stoppers 250, and in this process, the degree of close contact between the first tray 300 and the second tray 400 may be improved. Consequently, the complete formation of the cell 360 may be achieved.

[0130] The bracket 220 may include a fourth wall 224 to which the pusher 540 is coupled. The fourth wall 224 extends in one direction (for example, downward) from one end (for example, a rear end) of the first wall 221 and may form a wall of one surface (for example, a rear surface) of the bracket 220.

[0131] The ice maker 200 may include a first tray assembly and a second tray assembly.

[0132] The first tray assembly may include a first tray 300, include a first tray case, or include both the first tray 300 and the first tray case. The second tray assembly may include a second tray 400, include a second tray case, or include both the second tray 400 and the second tray case.

[0133] The bracket 220 may define at least a part of a space accommodating the first tray assembly and the second tray assembly.

[0134] The bracket 220 may be disposed, for example, on one side wall (for example, an upper side wall) of the freezing space 32. A water supply part 240 may be disposed on the bracket 220. The water supply part 240 may guide water supplied from one side (for example, an upper side) to the other side (for example, a lower side) of the water supply part 240. A water supply pipe (not shown) through which water is supplied may be disposed at one side (for example, an upper side) of the water supply part 240.

[0135] Since the water supply part 240 is disposed below the water supply pipe, water is guided in one direction (for example, downward) without splashing to the water supply part 240, and even if the water moves in the one direction (for example, downward) due to the lowered height, the amount of splashing water may be reduced.

[0136] The water supply part 240 may be supported by the bracket 220. The water supply part 240 may include a hook 248 coupled to the bracket 220. As an example, the hook 248 may be caught on the second part 223b of the bracket 220.

[0137] The ice maker 200 may include a cell 360 (refer to FIG. 14) which is a space where water undergoes a phase change into ice by the cold.

[0138] The first tray 300 may form at least a portion of the cell 360. The second tray 400 may form another portion of the cell 360. The cell 360 may include a first cell formed by the first tray 300 and a second cell formed by the second tray 400.

[0139] The first tray 300 may be coupled to the bracket 220. The second tray 400 may be disposed to be relatively movable with respect to the first tray 300. The second tray 400 may perform linear motion or rotational motion.

[0140] During the ice-making process, the second tray 400 moves with respect to the first tray 300, so that the first tray 300 and the second tray 400 may contact each other. When the first tray 300 and the second tray 400 contact each other, the cell 360 may be defined.

[0141] During the ice-releasing process after completion of ice making, the second tray 400 moves with respect to the first tray 300, so that the second tray 400 may be spaced apart from the first tray 300.

[0142] In this embodiment, the first tray 300 and the second tray 400 may be arranged in one direction (for example, a vertical direction) in a state where the cell 360 is formed. The first tray 300 may be referred to as an upper tray, and the second tray 400 may be referred to a lower tray.

[0143] A plurality of cells 360 may be defined by the first tray 300 and the second tray 400. As an example, the plurality of cells 360 may include three cells 360.

[0144] When water is cooled by the cold while water is supplied to the cell 360, ice of the same or similar shape as the cell 360 may be generated. As an example, the cell 360 may be formed in a spherical shape or a shape similar to a sphere. Of course, it is also possible that the cell 360 is formed in a rectangular parallelepiped shape or a polygonal shape.

[0145] The first tray 300 may include a plurality of tray parts 300a, 300b and 300c. The number of the plurality of tray parts 300a, 300b and 300c may correspond to the number of the plurality of cells 360.

[0146] Each of the plurality of tray parts 300a, 300b and 300c may form at least a portion of one cell. Based on a total surface area of one cell 360, a surface area of a portion of the cell formed by each tray part may be smaller than a surface area of another portion of the cell formed by the second tray 400.

[0147] The second tray case may include, for example, a second tray cover 480 and a second tray supporter 450. The second tray cover 480 and the second tray supporter 450 may be integrally formed, or may be manufactured as separate components and then coupled. For example, the second tray 400, the second tray supporter 450, and the second tray cover 480 may be coupled by a fastening member.

[0148] At least a portion of the second tray cover 480 may be located at one side (for example, an upper side) of the second tray 400. The second tray cover 480 may include a cover wall 481 forming an opening 482.

[0149] The opening 482 may be formed by passing through at least a portion of the second tray cover 480 so that at least a portion of the second tray 400 passes through the opening 482. The opening 482 may be formed to have a predetermined curvature corresponding to a shape of an outer peripheral surface of the cell 360. The opening 482 may be configured to have an area greater than or equal to a cross-sectional area of the plurality of second cells so that the plurality of second cells of the second tray 400 may pass through the opening 482.

[0150] The cover wall 481 may be placed on one side (for example, an upper side) of the first extension wall 420 of the second tray 400. The first extension wall 420 may include a tray protrusion 429 that contacts the second tray cover 480.

[0151] The tray protrusion 429 may extend in one direction (for example, upward) from the first extension wall 420. A plurality of tray protrusions 429 may be provided on the corner side of the first extension wall 420.

[0152] The second tray cover 480 may include a protrusion accommodating part 486 that protrudes in one direction (for example, upward) from the cover wall 481 to receive the tray protrusion 429. The tray protrusion 429 may pass through the cover wall 481 and be inserted into the protrusion accommodating part 486.

[0153] A protrusion 566 of the lift 560 may contact the bottom surface of the first extension wall 420. When the lift 560 moves additionally, the protrusion 566 presses the first extension wall 420 in one direction (for example, upward), and in this process, the tray protrusion 429 or the first extension wall 420 may be deformed. For example, the protrusion 566 may be pushed into the inside of the tray protrusion 429 while deforming a portion of the tray protrusion 429 or the first extension wall 420.

[0154] The lift 560 may be understood as a contact mechanism that moves (for example, rotates) with respect to the center of the shaft 520 so that the second tray assembly may be in close contact with the first tray 300.

[0155] The first extension wall 420 may be provided with tray protruding parts 427a provided on both sides of the tray wall of the second tray 400. The tray protruding part 427a may protrude in one direction (for example, upward) from the first extension wall 420.

[0156] The second tray cover 480 includes a guide hole 481b that is formed through the cover wall 481, and in which the tray protruding part 427a is accommodated. The assembly of the second tray 400 and the second tray cover 480 may be guided through the guide hole 481b.

[0157] The second tray cover 480 may include a cover fastening part 485 protruding in one direction (for example, downward) from the cover wall 481. A plurality of cover fastening parts 485 are provided along the perimeter of one surface (for example, a bottom surface) of the cover wall 481, and may be coupled to at least one of a fastening part 425 of the second tray 400 or a supporter fastening part 456 of the second tray supporter 450.

[0158] In a state where the cover fastening part 485 is coupled to the fastening part 425 and the supporter fastening part 456, a fastening member may be fastened from one side (for example, a lower side) of the second tray supporter 450.

[0159] The second tray cover 480 is provided on the cover wall 481 and may include an ice-releasing guide 487 that helps release ice. A plurality of ice-releasing guides 487 may be provided corresponding to the number of cells 360.

[0160] The ice-releasing guide 487 may be provided on a part (for example, a rear part) of the cover wall 481. For example, the ice-releasing guide 487 may be disposed at a position adjacent to the axis of the shaft 520. The ice-releasing guide 487 may have a groove part 487a surrounding at least a portion of the shaft 520.

[0161] During the movement of the second tray cover 480, the distance traveled by the ice-releasing guide 487 may be shorter than the distance traveled by a part (for example, a front part) of the second tray cover 480.

[0162] During the ice-releasing process, if ice is attached to the first tray 300, the ice-releasing guide 487 may press the ice to separate it from the first tray 300. During the ice-releasing process, the ice-releasing guide 487 may function to remove residual ice attached to the first tray 300 or residual ice present in the contact area between the first tray 300 and the second tray 400.

[0163] At least a portion of the second tray supporter 450 may be located at one side (for example, a lower side) of the second tray 400. The second tray supporter 450 may support the second tray 400 from a lower side of the second tray 400. As an example, at least a portion of a wall forming the second cell of the second tray 400 may be supported by the second tray supporter 450.

[0164] The ice maker 200 may include a pusher 540. The pusher 540 may be coupled to the bracket 220, for example. The pusher 540 may be provided in the same number as the cells 360, but is not limited thereto.

[0165] The pusher 540 may push out the ice located in the cell 360. For example, the pusher 540 may pass through the second tray supporter 450 to contact the second tray 400 forming the cell 360 and may press the contacted second tray 400.

[0166] The ice maker 200 may include heaters 490 and 495.

[0167] The heaters 490 and 495 may include a transparent ice heater 490 disposed in a recessed accommodating space 453a of the second tray supporter 450 to apply heat to the second tray 400 during an ice-making process. The transparent ice heater 490 may be disposed adjacent to or in contact with one side (for example, a lower side) of the second tray 400 to supply heat to a portion (for example, a lower portion) of the second tray 400. The transparent ice heater 490 may be a wire-type heater, for example.

[0168] The heaters 490 and 495 may include an ice-releasing heater 495 controlled to be turned on in at least a partial section after ice making is completed so that ice may be easily separated from the tray assembly. The ice-releasing heater 495 may be disposed at a position adjacent to the first tray 300. The ice-releasing heater 495 may be a wire-type heater, for example.

[0169] For example, the ice-releasing heater 495 may be disposed to contact the first tray 300 or at a position spaced apart from the first tray 300 by a predetermined distance. In either case, the ice-releasing heater 495 may supply heat to the first tray 300, and the heat supplied to the first tray 300 may be transferred to the cell 360.

[0170] The ice-releasing heater 495 may be covered by the bracket 220. Accordingly, fluid discharged through the first tray 300 may be prevented from contacting the ice-releasing heater 495.

[0171] The ice maker 200 may include a lift 560 as a contact mechanism for increasing the degree of close contact between the first tray assembly and the second tray assembly.

[0172] The lift 560 may be coupled to the shaft 520 or holders 531 and 532. The lift 560 may move together with the shaft 520 and the holders 531 and 532. Hereinafter, a structure in which the lift 560 is coupled to the holders 531 and 532 will be described. However, it may also be applicable to a structure in which the lift 560 is coupled to the shaft 520.

[0173] The lift 560 may be provided on at least one side of the shaft 520. For example, a plurality of lifts 560 may be provided on both sides of the shaft 520. The plurality of lifts 560 may be located outside both side walls of the second tray supporter 450.

[0174] A length w2 (refer to FIG. 7) of the second tray 400 in one direction (for example, a left-right direction) may be formed longer than a length w1 (refer to FIG. 7) of the second tray supporter 450 in one direction (for example, a left-right direction). The plurality of lifts 560 are disposed outside both side walls of the second tray supporter 450 and may support one surface (for example, a bottom surface) of the second tray 400.

[0175] The lift 560 may include a support bar 561 supporting a portion (for example, a lower portion) of the second tray 400. The support bar 561 may be disposed outside the side wall of the second tray supporter 450.

[0176] The lift 560 may include an extension part 563 coupled to the holders 531 and 532. The extension part 563 may form a through-hole 564 into which the holders 531 and 532 are inserted.

[0177] The lift 560 may include a protrusion 566 protruding from the support bar 561 in a direction toward the second tray 400. The protrusion 566 may press one surface (for example, a bottom surface) of the tray protrusion 429 of the second tray 400 to bring the second tray 400 into close contact with the first tray 300 side.

[0178] At the ice-making position of the tray assembly, the lift 560 may further move in one direction (for example, upward) with respect to the axis of the shaft 520 so that the second tray 400 is in close contact with the first tray 300. In this process, the protrusion 566 provides a force toward the first tray 300 to the second tray 400 through the tray protrusion 429, and the second tray 400 may transmit a force that brings it into close contact with the second tray cover 480 in one direction (for example, upward).

[0179] The second tray cover 480 may include a protrusion accommodating part 486 into which the tray protrusion 429 is inserted. One surface (for example, an upper surface) of the protrusion accommodating part 486 may be supported by the stopper 250. Accordingly, when the second tray 400 transmits a force that brings it into close contact with the second tray cover 480 in one direction (for example, upward), one surface (for example, an upper surface) of the protrusion accommodating part 486 may act as a coupling support surface by the stopper 250. Through the coupling support surface, the second tray 400 may be brought into close contact with the first tray 300.

[0180] That is, the tray protrusion 429 and the stopper 250 may be provided on opposite sides with respect to the surface of the protrusion accommodating part 486 so that the stopper 250 provides a reaction force when the tray protrusion 429 presses the protrusion accommodating part 486.

[0181] The ice maker 200 may include a driving part 510 providing a driving force. The second tray 400 may move relative to the first tray 300 by receiving the driving force of the driving part 510. The driving part 510 may include a driving motor.

[0182] The second tray supporter 450 may include two extension parts 455 in which a through-hole 455a is formed. The two extension parts 455 may be provided on both left and right side portions of the second tray supporter 450.

[0183] The ice maker 200 may include a shaft 520 passing through the through-hole 455a. The shaft 520 extends between the two extension parts 455 and may be moved (rotated) by receiving power from the driving part 510.

[0184] The driving part 510 may include a motor and a plurality of gears.

[0185] A full-ice detection lever 550 may be connected to the driving part 510. The full-ice detection lever 550 is moved by the power provided from the driving part 510 and may detect ice stored in the ice bin 600 during the movement process.

[0186] The driving part 510 may include a cam that is moved or rotated by receiving the power of the motor. The ice maker 200 may include a sensor for detecting the movement or rotation of the cam. For example, a magnet is provided on the cam, and the sensor may be a Hall sensor for detecting the magnetism of the magnet during the movement process of the cam.

[0187] For example, a water supply position, an ice-making position, and an ice-releasing position may be distinguished and determined based on a signal output from the sensor.

[0188] The second tray 400 may be formed of a non-metallic material. For example, the second tray 400 may be formed of a flexible or ductile material whose shape may be deformed when pressed by the pusher 540. Although not limited, the second tray 400 may be formed of a silicone material, for example.

[0189] As the second tray 400 is deformed while being pressed by the pusher 540, the pressing force of the pusher 540 may be transmitted to the ice. The ice and the second tray 400 may be separated by the pressing force of the pusher 540.

[0190] If the second tray 400 is formed of a non-metallic material and a flexible or ductile material, the coupling force or adhesive force between the ice and the second tray 400 may be reduced, so that the ice may be easily separated from the second tray 400.

[0191] If the second tray 400 is formed of a non-metallic and flexible material, after the shape of the second tray 400 is deformed by the pusher 540, the second tray 400 may be restored to its original shape once the pressing force of the pusher 540 is removed.

[0192] For example, the first tray 300 may be formed of a metal or plastic material. In this case, the coupling force or adhesive force per unit area between the first tray 300 and the ice may be relatively strong. However, since the first cell formed inside the first tray 300 has a small surface area, the ice may be easily released.

[0193] As another example, the first tray 300 may be formed of a non-metallic material. In this case, the coupling force or adhesion force per unit area between the first tray 300 and the ice may be relatively weak. Therefore, the ice releasing may be easily performed. Although not limited, the first tray 300 may be formed of, for example, a silicone material.

[0194] The first tray 300 and the second tray 400 may be formed of the same material. In this case, a hardness of the first tray 300 and a hardness of the second tray 400 may be different so that sealing performance is maintained at a contact portion between the first tray 300 and the second tray 400.

[0195] In the case of this embodiment, since the second tray 400 is pressed by the pusher 540 to undergo shape deformation, the hardness of the second tray 400 may be lower than the hardness of the first tray 300 so that the shape deformation of the second tray 400 is easy.

[0196] FIG. 5 is a plan view showing the configuration of the first and second tray assemblies and the power transmission device according to an embodiment of the present invention, FIG. 6 is a plan view showing the configuration of the second tray assembly and the power transmission device according to an embodiment of the present invention, and FIG. 7 is an exploded perspective view showing the configuration of the second tray assembly and the power transmission device according to an embodiment of the present invention.

[0197] Referring to FIGS. 5 to 7, the first tray 300 according to an embodiment of the present invention may include a plurality of tray parts 300a, 300b and 300c. The number of the plurality of tray parts 300a, 300b and 300c may correspond to the number of the plurality of cells 360.

[0198] The first tray 300 may form an upper tray.

[0199] An ice-releasing heater 495 may be disposed on the first tray 300. The ice-releasing heater 495 may be disposed in contact with or adjacent to the surface of the first tray 300.

[0200] A second tray 400 is disposed on one side (for example, a lower side) of the first tray 300. The second tray 400 and the first tray 300 may together form a cell 360. The second tray 400 may define a second cell 410b, which is a part of the cell 360.

[0201] The second tray 400 may include a plurality of tray parts 401a, 401b and 401c corresponding to the plurality of tray parts 300a, 300b and 300c of the first tray 300. Each tray part of the first tray 300 and each tray part of the second tray 400 may contact each other to form the cell 360.

[0202] The second tray 400 may include a third extension wall 1433 that guides fluid supplied from the water supply part 240 to the cell 360. The third extension wall 1433 may include a first wall part 1434 extending in a direction in which the plurality of tray parts 401a, 401b and 401c are arranged.

[0203] The third extension wall 1433 may include a second wall part 1435 extending from both ends of the first wall part 1434 and connected to the second extension wall 431 of the second tray 400.

[0204] At least a portion of the water supply part 240 may be disposed in an inner space of the third extension wall 1433.

[0205] A second tray cover 480 may be provided on one side (for example, an upper side) of the first extension wall 420 of the second tray 400. The second tray cover 480 may cover at least a portion of the first extension wall 420.

[0206] The tray protruding part 427a of the second tray 400 may pass through the guide hole 481b of the second tray cover 480 and protrude in one direction (for example, upward) of the first extension wall 420.

[0207] The second tray cover 480 may include a protrusion accommodating part 486 protruding in one direction (for example, upward) from the cover wall 481. The tray protrusion 429 of the second tray 400 may be inserted into the protrusion accommodating part 486. A plurality of protrusion accommodating parts 486 may be disposed along the perimeter of the cover wall 481.

[0208] A plurality of stoppers 250a to 250f may be disposed on one surface (for example, an upper surface) of the plurality of protrusion accommodating parts 486 so as to be contactable. The plurality of stoppers 250a to 250f may be coupled to the bracket 200. For example, the plurality of stoppers 250a to 250f may have a bar shape.

[0209] The plurality of stoppers 250a to 250f may include four stoppers 250a to 250d disposed at corners of the cover wall 481. The four stoppers 250a to 250d may include first and second stoppers 250a and 250b disposed on the protrusion accommodating part 486 pressed by the first lift 560a.

[0210] The first and second stoppers 250a and 250b may include a first stopper 250a adjacent to the first holder 531 and a second stopper 250b relatively far from the first holder 531.

[0211] The four stoppers 250a to 250d may include third and fourth stoppers 250c and 250d disposed on the protrusion accommodating part 486 pressed by the second lift 560b. The third and fourth stoppers 250c and 250d may include a third stopper 250c adjacent to the second holder 532 and a fourth stopper 250d relatively far from the second holder 532.

[0212] The plurality of stoppers 250a to 250f may include fifth and sixth stoppers 250e and 250f disposed at one end (for example, a rear end) of the cover wall 481. The fifth and sixth stoppers 250e and 250f may be disposed between the first stopper 250a and the third stopper 250c.

[0213] The fifth and sixth stoppers 250e and 250f may be disposed to contact the remaining protrusion accommodating parts 486 that are not pressed by the lift 560. However, the number of stoppers may not be limited to the spirit of the present invention.

[0214] A power transmission device may be disposed at a rear side of at least one of the second tray 400 and the second tray cover 480.

[0215] The power transmission device may include a shaft 520 that rotates by being connected to the driving part 510. The shaft 520 may extend in a direction in which the plurality of tray parts 300a, 300b and 300c of the first tray 300 are arranged or in a direction in which the plurality of tray parts 401a, 401b and 401c of the second tray 400 are arranged.

[0216] The power transmission device may include a holder 530 provided at an end of the shaft 520 to transmit power from the driving part 510 to the shaft 520. The holder 530 may include a first holder 531 as a driving holder that is shaft-coupled to the driving part 510.

[0217] The first holder 531 may be coupled to a first end of the shaft 520. An insertion hole 521 into which the first holder 531 is inserted may be formed at the first end of the shaft 520. An insertion hole 521 into which a second holder 532 is inserted may also be formed at a second end of the shaft 520, that is, an end opposite to the first end.

[0218] The first holder 531 is coupled to a motor shaft of the driving part 510, extends in a direction toward the shaft 520, and may be coupled to the insertion hole 521 of the shaft 520 by passing through a first through-hole 564 of the first lift 560a and a second through-hole 455a of the second tray supporter 450.

[0219] The first holder 531 may include an insertion bar 531a coupled to the insertion hole 521 of the first end of the shaft 520. The cross-sectional area of the insertion bar 531a may be formed slightly smaller than the inner area of the insertion hole 521 so that the insertion bar 531a may be inserted into the insertion hole 521.

[0220] The first holder 531 may include a protruding part 531b protruding from the outer circumferential surface of the insertion bar 531a. An end of the protruding part 531b may be supported by the end of the shaft 520. That is, the insertion bar 531a is inserted into the insertion hole 521 of the shaft 520, and the protruding part 531b is not inserted into the insertion hole 521 but may be caught by the end of the shaft 520.

[0221] A plurality of protruding parts 531b may be provided to protrude from both sides of the outer circumferential surface of the insertion bar 531a.

[0222] The first holder 531 may include a housing 531c having a shaft insertion hole 531d to which the motor shaft of the driving part 510 is coupled.

[0223] The front end of the housing 531c may support the extension part 563 of the first lift 560a. The housing 531c and the extension part 455 of the second tray supporter 450 may be located at the extension part 563. For convenience of description, the extension part 563 of the lift 560 may be named a "first extension part," and the extension part 455 of the second tray supporter 450 may be named a "second extension part." That is, the first extension part 563 is disposed outside the second extension part 455 and may be supported by one end (for example, a front end) of the housing 531c.

[0224] The insertion bar 531a extends from the housing 531c toward the shaft 520, and the protruding part 531b may be connected to the housing 531c. That is, the protruding part 531b is spaced apart from the end of the insertion bar 531a and may be connected to the housing 531c.

[0225] At least a portion of the insertion bar 531a and the protruding part 531b may be inserted into the first through-hole 564 of the first lift 560a. The sum of the cross-sectional areas of the insertion bar 531a and the protruding part 531b may be formed slightly smaller than the inner area of the first through-hole 564, substantially in a corresponding size, so that the insertion bar 531a and the protruding part 531b may be fitted and coupled with the first through-hole 564.

[0226] Another portion of the insertion bar 531a and the protruding part 531b may be inserted into the second through-hole 455a of the second tray supporter 450. The inner area of the second through-hole 455a may be formed larger than the sum of the cross-sectional areas of the insertion bar 531a and the protruding part 531b to an extent that the insertion bar 531a and the protruding part 531b may move while being inserted into the second through-hole 455a.

[0227] A reinforcement rib 531e for reinforcement of strength may be provided on the outer surface of the housing 531c.

[0228] The holder 530 may include a second holder 532 as a driven holder coupled to the second end of the shaft 520. The second holder 532 may be coupled to the insertion hole 521 formed at the second end of the shaft 520.

[0229] The second holder 532 differs from the first holder 531 only in that the motor shaft of the driving part 510 is not coupled to the second holder 532; however, the structure in which the second holder 532 passes through the first through-hole 564 of the lift 560 and the second through-hole 455a of the second tray supporter 450 to be coupled to the insertion hole 521 of the shaft 520 is the same as that of the first holder 531.

[0230] That is, the second holder 532 may include an insertion bar 532a coupled to the insertion hole 521 at the second end of the shaft 520. The second holder 532 may include a protruding part 532b protruding from the outer circumferential surface of the insertion bar 532a. The second holder 532 may include a housing 532c connected to the insertion bar 532a.

[0231] The description regarding the insertion bar 532a, the protruding part 532b, and the housing 532c of the second holder 532 refers to the descriptions regarding the insertion bar 531a, the protruding part 531b, and the housing 531c of the first holder 531 described above.

[0232] FIG. 8 is a perspective view showing the configuration of the second tray according to an embodiment of the present invention, FIG. 9 is a perspective view showing the configuration of the second tray supporter according to an embodiment of the present invention, and FIG. 10 is a perspective view showing the configuration of the second tray cover according to an embodiment of the present invention.

[0233] Referring to FIG. 6 and FIGS. 8 to 10 together, the second tray 400 according to an embodiment of the present invention may define a plurality of second cells 410b. The plurality of second cells 410b may be arranged in a line, for example. Based on FIG. 8, the plurality of second cells 410b may be arranged in one direction (for example, the X-axis direction).

[0234] To define the plurality of second cells 410b, a plurality of second tray walls 410 are provided, and each of the plurality of second tray walls 410 may be arranged in one direction (for example, the X-axis direction).

[0235] The second tray 400 may include a second opening 413. The second opening 413 forms one end (for example, an upper end) of the second tray 400 and may contact the first tray 300.

[0236] The second tray 400 may include a first extension wall 420 extending in a first direction (for example, a horizontal direction) toward an outside of the second tray wall 410. The first extension wall 420 may be seated on the third wall 453 of the second tray supporter 450.

[0237] A plurality of second tray walls 410 defining the plurality of second cells 410b are provided, and the first extension wall 420 may extend to the outside of the plurality of second tray walls 410. For example, the first extension wall 420 may include a rectangular planar wall.

[0238] The first extension wall 420 may be formed at a position through which an extension line in the first direction (for example, a horizontal direction) bisecting a height in a second direction (for example, a vertical direction) of the cell 360 passes. When defining the center C1 of the cell 360, the extension line in the first direction (for example, a horizontal direction) passing through the center C1 may pass through the first extension wall 420.

[0239] A fastening part 425 to which the cover fastening part 485 of the second tray cover 480 is coupled may be formed at the edge of the first extension wall 420. A plurality of fastening parts 425 may be formed. The plurality of fastening parts 425 may include a plurality of first fastening parts 425a recessed at one end (for example, a front end) of the first extension wall 420 and a plurality of second fastening parts 425b formed through a portion (for example, a rear part) of the first extension wall 420.

[0240] The second tray wall 410 may include a first part 411 located on one side (for example, a lower side) of the first extension wall 420 with respect to the first extension wall 420. The first part 411 may form one region (for example, a lower region) of the cell 360. The first part 411 may be accommodated in the accommodating space 453a of the second tray supporter 450 and be supported by the second tray supporter 450.

[0241] The second tray wall 410 may include a second part 412 located on one side (for example, an upper side) of the first extension wall 420 with respect to the first extension wall 420. The second part 412 may form a portion of another region (for example, an upper region) of the cell 360.

[0242] An end (for example, an upper end) of the second part 412 may form a second opening 413. The second part 412 may be understood as a portion that is not accommodated in the accommodating space 453a.

[0243] The first part 411 and the second part 412 may be integrally formed. As another example, the first part 411 and the second part 412 may be manufactured separately and then assembled.

[0244] A reinforcement rib 436 for reinforcing strength may be provided on the second part 412. The reinforcement rib 436 extends in one direction (for example, the Z-axis direction), and a plurality of reinforcement ribs may be arranged in one direction (for example, a circumferential direction) of the second part 412.

[0245] The second tray 400 may include a peripheral wall 430 extending along a circumference of one end (for example, an upper end) of the second tray wall 410. For example, the peripheral wall 430 is formed integrally with the second tray wall 410 and may extend in one direction (for example, upward) from one end (for example, an upper end) of the second tray wall 410.

[0246] The peripheral wall 430 may include a second extension wall 431 extending in one direction (for example, upward) from the second part 412.

[0247] The second tray 400 may include a third extension wall 1433 forming a flow path for fluid supplied to the cell 360. The third extension wall 1433 may include a first wall part 1434 and a second wall part 1435.

[0248] The second tray 400 may include a partition wall 432 provided between the plurality of second extension walls 431. The partition wall 432 may connect the ends of the plurality of second extension walls 431. By the partition wall 432, the plurality of second extension walls 431 may be spaced apart from each other.

[0249] A plurality of partition walls 432 may be provided. For example, the partition wall 432 may include a first partition wall 432a provided between the second extension wall 431 of the first tray part 401a and the second extension wall 431 of the second tray part 401b. The partition wall 432 may include a second partition wall 432b provided between the first extension wall 431 of the second tray part 401b and the second extension wall 431 of the third tray part 401c.

[0250] The ice maker may include a second tray supporter 450 supporting the second tray 400. The second tray supporter 450 may include two first walls 451 forming both side surfaces. The two extension parts 455 may be respectively provided at one end (for example, a rear end) of the first wall 451.

[0251] The second tray supporter 450 may include a second wall 452 connecting the other ends (for example, front ends) of the two first walls 451. The second wall 452 may form one surface part (for example, a front part) of the second tray supporter 450.

[0252] The second tray supporter 450 may include a third wall 453 forming another surface part (for example, an upper surface part) of the second tray supporter 450. The first extension wall 420 of the second tray 400 may be seated on the third wall 453.

[0253] On the third wall 453, a first coupling part 459a to which a first edge 422a (refer to FIG. 14) of the second tray 400 is coupled may be formed. On the third wall 453, a second coupling part 459b to which a protrusion 422c (refer to FIG. 14) of the second tray 400 is coupled may be formed. On the third wall 453, an insertion part 458a to which a second edge 422b (refer to FIG. 14) of the second tray 400 is coupled may be formed. The insertion part 458a may include a groove recessed from the third wall 453 so that the second edge 422b is inserted.

[0254] The second tray supporter 450 may include at least one of a fourth wall 454 or a fifth wall 458 extending in one direction (for example, downward) from the third wall 453. The fourth wall 454 is one wall (for example, a rear wall) of the second tray supporter 450, and the fifth wall 458 may be understood as another wall (for example, an inner wall) spaced forward from the fourth wall 454. The insertion part 458a may be a space formed between the fourth wall 454 and the fifth wall 458.

[0255] Through the first and second edges 422a, 422b and the protrusion 422c, the second tray 400 is coupled to the second tray supporter 450, and the second tray cover 480 covers the first extension wall 420 of the second tray 400, whereby the surface of the second tray 400 may be shielded from the outside. According to this configuration, an icing phenomenon between the tray 400 and the second tray cover 480 due to oversupplied water may be reduced.

[0256] The extension part 455 of the second tray supporter 450 may include two extension parts 455 forming a through-hole 455a into which the holders 531 and 532 are inserted.

[0257] The through-hole 455a may include a first area 455a1 forming an area into which insertion bars 531a and 532a of the holders 531 and 532 are inserted. The first area 455a1 may include a rounded inner circumferential surface corresponding to the curvature of the outer circumferential surface of the insertion bars 531a and 532a.

[0258] The through-hole 455a may include a second area 455a2 further recessed from the first area 455a1 in a first direction. The second area 455a2 may form an area into which one of the two protruding parts 531b and 532b provided in each holder 531, 532 is inserted.

[0259] The size of the second area 455a2 is formed larger than the cross-sectional area of the protruding parts 531b and 532b, so that the protruding parts 531b and 532b may move within the second area 455a2.

[0260] The through-hole 455a may include a third area 455a3 further recessed from the first area 455a1 in a second direction. The third area 455a3 may form an area into which the other one of the two protruding parts 531b and 532b is inserted. The first direction and the second direction may form directions opposite to each other.

[0261] The size of the third area 455a3 is formed larger than the cross-sectional area of the protruding parts 531b and 532b so that the protruding parts 531b and 532b may move within the third area 455a3.

[0262] The second tray cover 480 may include a cover wall 481 provided with a plurality of protrusion accommodating parts 486. The number of the plurality of protrusion accommodating parts 486 may correspond to the number of tray protrusions 429 of the second tray 400.

[0263] At one end (for example, a rear end) of the cover wall 481, a plurality of ice-releasing guides 487 may be provided. The plurality of ice-releasing guides 487 may be arranged in one direction (for example, the X-axis direction) in which the plurality of tray parts 401a, 401b and 401c are arranged. The plurality of ice-releasing guides 487 may be connected to each other by a guide connection part 488.

[0264] The ice-releasing guide 487 may be disposed at a position adjacent to the axis of the shaft 520. The ice-releasing guide 487 may have a groove part 487a surrounding at least a portion of the shaft 520.

[0265] FIG. 11 is a perspective view showing the configuration of a driving part and a power transmission device according to an embodiment of the present invention, FIG. 12 is a perspective view of a lift according to an embodiment of the present invention, and FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 12.

[0266] Referring to FIGS. 11 to 13, an ice maker according to an embodiment of the present invention may include a driving part 510 and a power transmission device operated by the driving force of the driving part 510.

[0267] The power transmission device may include a shaft 520 rotatably provided by the driving part 510. The shaft 520 may extend in a direction in which a plurality of cells are arranged, i.e., one direction (for example, the X-axis direction).

[0268] The power transmission device may include holders 531 and 532 coupled to the shaft 520. The holders 531 and 532 may include a first holder 531 coupled to a first end of the shaft 520 and coupling the shaft 520 to the driving part 510.

[0269] The first holder 531 may be coupled to the driving part 510. The first holder 531 may be disposed between the driving part 510 and the shaft 520.

[0270] The first holder 531 may include a housing 531c coupled to the driving part 510. An extension part 563 of a first lift 560a may be supported at one end (for example, a front end) of the housing 531c.

[0271] The first holder 531 may include an insertion bar 531a extending from the housing 531c and coupled to an insertion hole 521 at the first end of the shaft 520.

[0272] The first holder 531 may include a plurality of protruding parts 531b protruding from the outer circumferential surface of the insertion bar 531a. At least a portion of the insertion part 531a and the plurality of protruding parts 531b may be inserted into a first through-hole 564 of the first lift 560a.

[0273] The first lift 560a may be tightly coupled to the first holder 531 through the insertion part 531a and the plurality of protruding parts 531b. When the first holder 531 moves (for example, rotates), the first lift 560a may move (for example, rotate) together with the first holder 531 without slipping.

[0274] The holders 531 and 532 may include a second holder 532 coupled to a second end of the shaft 520. By the rotation of the shaft 520, the second holder 532 may move.

[0275] The second holder 532 may include a housing 532c coupled to the driving part 510. The extension part 563 of a second lift 560b may be supported at one end (for example, a front end) of the housing 532c.

[0276] The second holder 532 may include an insertion bar 532a extending from the housing 532c and coupled to an insertion hole 521 at the second end of the shaft 520.

[0277] The second holder 532 may include a plurality of protruding parts 532b protruding from the outer circumferential surface of the insertion bar 532a. At least a portion of the insertion part 532a and the plurality of protruding parts 532b may be inserted into the first through-hole 564 of the second lift 560b.

[0278] The second lift 560b may be tightly coupled to the second holder 532 through the insertion part 532a and the plurality of protruding parts 532b. Therefore, when the second holder 532 moves, the second lift 560b may move together with the second holder 532 without slipping.

[0279] The first lift 560a and the second lift 560b may have the same configuration.

[0280] The lift 560 may include a support bar 561 supporting the lower portion of the second tray 400. The support bar 561 may be disposed outside the side wall of the second tray supporter 450.

[0281] The support bar 561 may extend in the Y-axis direction, which is a direction intersecting the extension direction of the shaft 520, for example, a vertical direction. The Y-axis direction is named the "length direction" of the second tray 400, and the X-axis direction may be named the "width direction" of the second tray 400.

[0282] The lift 560 may include an extension part 563 coupled to the holders 531 and 532. The extension part 563 may form a first through-hole 564 into which the holders 531 and 532 are inserted.

[0283] The extension part 563 forms a part (for example, a rear part) of the lift 560, and the support bar 561 may extend in one direction (for example, forward) from the extension part 563. The support bar 561 may move (for example, rotate) in another direction (for example, an up-down direction) with respect to the center of the extension part 563.

[0284] The lift 560 may include a pressing device 565 provided on the support bar 561. For example, the pressing device 565 may be fastened to the support bar 561 by a fastening member 567. A first fastening hole 565a into which the fastening member 567 is inserted may be formed in the pressing device 565.

[0285] The fastening member 567 may pass through the first fastening hole 565a and be inserted into a second fastening hole 561c of the support bar 561 to be fastened to the support bar 561.

[0286] The pressing device 565 may include a first part 565a supported on a first surface 561a of the support bar 561 and a second part 565b supported on a second surface (for example, a side surface) of the support bar 561 and in which the first fastening hole 565a is formed. The second part 565b of the pressing device 565 may extend by being bent from the first part 565a.

[0287] The pressing device 565 may include a protrusion 566 that contacts the second tray 400. The protrusion 566 may protrude from the first surface 561a of the support bar 561 in a direction toward the second tray 400. For example, the protrusion 566 is provided on the first part of the pressing device 565 and may protrude in one direction (for example, upward) from the first part. The protrusion 566 may press one surface (for example, a bottom surface) of the tray protrusion 429 of the second tray 400 to bring the second tray 400 into close contact with the first tray 300.

[0288] The lift 560 may include a groove 568 recessed in one direction (for example, downward) from the first surface 561a. The second part 565b may be seated in the groove 568.

[0289] The lift 560 may include a third surface 561b. A space may be formed between the first surface 561a and the third surface 561b.

[0290] A plurality of pressing devices 565 may be provided. The plurality of pressing devices 565 may include a first pressing device disposed at a position adjacent to the extension part 563 and a second pressing device disposed at a position relatively distant from the extension part 563.

[0291] The first pressing device may be located between the extension part 563 and the second pressing device.

[0292] At least a portion of the insertion part 531a and the plurality of protruding parts 531b of the holders 531 and 532 may be inserted into the first through-hole 564 of the lift 560. The first through-hole 564 may include a first area 564a1 into which the insertion part 531a is inserted.

[0293] The first through-hole 564 may include a second area 564a2 and a third area 564a3 into which the plurality of protruding parts 531b are inserted.

[0294] The second area 564a2 may be formed to be further recessed in a first direction from the first area 564a1. The third area 564a3 may be formed to be further recessed in a second direction from the first area 564a1. The first direction and the second direction may form directions opposite to each other.

[0295] The insertion part 531a and the plurality of protruding parts 531b of the holders 531, 532 may be tightly fitted into the first to third areas 564a1, 564a2 and 564a3.

[0296] FIG. 14 is a cross-sectional view of the ice maker taken along line 14-14 of FIG. 2,

[0297] FIG. 15 is a partial side view of the ice maker showing a holder coupled to a lift and a second tray supporter according to an embodiment of the present invention, FIG. 16 is a view showing the holder and lift further moved from the state of FIG. 15, FIG. 17 is a left cross-sectional view of the ice maker showing the further movement of the lift according to an embodiment of the present invention, and FIG. 18 is a right cross-sectional view of the ice maker showing the further movement of the lift according to an embodiment of the present invention.

[0298] Referring to FIG. 14, a first tray 300 according to an embodiment of the present invention forms at least a portion of a cell 360, and a second tray 400 may form another portion of the cell 360.

[0299] The inner circumferential surface of the cell 360 may include a first cell surface 310a formed by the first tray 300 and a second cell surface 410a formed by the second tray 400. The first cell surface 310a and the second cell surface 410a may extend in one direction (for example, a circumferential direction) to form the cell 360.

[0300] With respect to the center C1 of the cell 360, the diameter D1 of the cell 360 may be formed greater than the diameter D2 of the portion where the first cell surface 310a and the second cell surface 410a contact. The portion where the first cell surface 310a and the second cell surface 410a contact may be understood as a boundary between the first tray 300 and the second tray 400.

[0301] The diameter D2 may form the diameter of the first opening of the first tray 300. The first opening of the first tray 300 may form an end (for example, a lower end) of the first tray 300. The diameter D2 may form the diameter of the second opening 413 of the second tray 400. The second opening 413 of the second tray 400 may form an end (for example, an upper end) of the second tray 400.

[0302] With respect to the center C1 of the cell 360, the circumferential length of the first cell surface 310a may be less than the circumferential length of the second cell surface 410a. With respect to the center C1 of the cell 360, the central angle formed by the first cell surface 310a may be less than the central angle formed by the second cell surface 410a.

[0303] FIG. 14 shows the tray assembly in the ice-making position, and FIG. 15 shows the state of the second tray supporter 450 and the first holder 531 at the position of FIG. 14.

[0304] Referring to FIG. 15, the first holder 531 may be inserted into the second through-hole 455a of the second tray supporter 450 while being coupled to the lift 560.

[0305] The area of the insertion bar 531a and the plurality of protruding parts 531b of the first holder 531 may be smaller than the internal area of the second through-hole 455a. For example, any one of the plurality of protruding parts 531b may be spaced apart from one end of the second area 455a2 of the second through-hole 455a.

[0306] The other one of the plurality of protruding parts 531b may be spaced apart from one end of the third area 455a3 of the second through-hole 455a. According to this configuration, the first holder 531 may be in a position where it may further move (for example, rotate) within the second through-hole 455a-that is, a position where it may idle.

[0307] FIG. 16 shows the driving part 510 further driving from the position of FIG. 15, causing the first holder 531 to move further (counterclockwise based on FIG. 15).

[0308] When the first holder 531 moves, the lift 560 coupled to the first holder 531 may move (for example, rotate) in the direction of movement of the first holder 531 (additional movement of the lift).

[0309] The lift 560 may move until the protruding part 531b of the first holder 531 interferes with the end of the second through-hole 455a of the second tray supporter 450. At this time, the second tray supporter 450 may not move. That is, the first holder 531 and the lift 560 may idle inside the second through-hole 455a.

[0310] Referring to FIGS. 17 and 18, the lift 560 may further move in one direction (for example, upward) with respect to the axis of the shaft 520 during the process of additional movement.

[0311] The protrusion 566 moves in one direction (for example, upward) based on the center of the extension part 563 or holders 531, 532 and may press one surface (for example, a bottom surface) of the second tray 400. During this pressing process, either the protrusion 566 or the second tray 400 may be deformed. For example, FIG. 18 shows the protrusion 566 in close contact with the second tray 400, at which point the second tray 400 is deformed.

[0312] A plurality of protrusions 566 may be provided. Among the plurality of protrusions 566, the movement distance of the first protrusion 566a located closer to the holders 531 and 532 is relatively small, and the first protrusion 566a may press the first tray protrusion 429a.

[0313] On the other hand, the movement distance of the second protrusion 566b located further from the holders 531 and 532 is relatively large, and the second protrusion 566b may press the second tray protrusion 429b.

[0314] The protrusion 566 presses one surface (for example, a bottom surface) of the tray protrusion 429 and may provide a force directed toward the first tray 300 to the second tray 400 through the tray protrusion 429. Accordingly, the second tray 400 transmits a force that brings it into close contact with the second tray cover 480 in one direction (for example, upward), and the second tray 400 may be brought into close contact toward the first tray 300.

[0315] The tray protrusion 429 is located inside the protrusion accommodating part 486 of the second tray cover 480, and the tray protrusion 429 may contact the protrusion accommodating part 486 during the deformation process of the second tray 400.

[0316] Since one surface (for example, an upper surface) of the protrusion accommodating part 486 is supported by the stopper 250, when the second tray 400 transmits the force to closely contact the second tray cover 480 upward, a surface of the protrusion accommodating part 486 may act as a coupling support surface by the stopper 250. That is, the second tray 400 may be brought into close contact with the first tray 300 through the coupling support surface.

[0317] FIG. 19 is a cross-sectional view of the ice maker showing the second tray starting to move to the ice-releasing position according to an embodiment of the present invention, and FIG. 20 is a cross-sectional view of the ice maker showing ice being released from the second tray at the ice-releasing position according to an embodiment of the present invention.

[0318] Referring to FIG. 14 and FIGS. 19 and 20 together, the ice maker may be in ice-making, ice-releasing, and water-supply positions. FIG. 14 shows the ice maker in the ice-making position, and FIGS. 19 and 20 show the ice maker moving from the ice-making position to the ice-releasing position.

[0319] When ice making is completed at the ice-making position of the first and second tray assemblies in FIG. 14, ice (I) is generated, and the second tray assembly may be moved to the ice-releasing position as shown in FIG. 19.

[0320] The direction in which the second tray assembly moves from the ice-making position of FIG. 14 to the ice-releasing position of FIG. 19 may be referred to as forward movement (or forward rotation). Conversely, the direction moving from the ice-releasing position of FIG. 19 to the ice-making position of FIG. 14 may be referred to as reverse movement (or reverse rotation).

[0321] Referring to FIG. 19, if the driving part 510 is driven forward by a predetermined angle, the contact between the ice and the first tray 300 is separated, and the ice (I) may move while positioned in the second tray 400. At this time, when ice-releasing begins from the position of FIG. 16, the holders 531 and 532 and the lift 560 move first; if the holders 531 and 532 and the end of the second through-hole 455a of the second tray supporter 450 interfere during the movement, the movement of the second tray supporter 450 may begin.

[0322] Meanwhile, in order to facilitate ice-releasing at the position of FIG. 14, the transparent ice heater 490 may be operated and wait for a predetermined time.

[0323] FIG. 20 shows the ice being released as the second tray assembly moves further forward from FIG. 19. At the position of FIG. 20, the second tray 400 may be pressed by the pusher 540. By the pusher 540 pressing an end (for example, a lower end) of the second tray 400, the ice may begin to separate from the second tray 400.

[0324] In the process of the ice separating from the second tray 400, the second tray 400 may be deformed in a direction in which the diameter of the opening 413 expands. For this purpose, the second tray 400 may be made of, for example, a flexible or ductile material.

[0325] When the ice-releasing operation is completed, the second tray assembly moves in the reverse direction to return to the ice-making position as shown in FIG. 14. Although not shown in the drawings, when a water-supply operation starts at the position of FIG. 14, the second tray assembly may move forward by a predetermined angle, for example, about 10 to 20 degrees, toward a water-supply position. At the water-supply position, fluid is supplied through the water supply part 240 and may be supplied to the plurality of cells 360.

[0326] When the water supply is completed, the second tray assembly may wait for a predetermined time so that the water spreads and is supplied from one cell (center cell) to other cells (both side cells). After the predetermined time has elapsed, the second tray assembly moves in the reverse direction to the ice-making position as shown in FIG. 14 and performs the ice-making operation. During the ice-making process, cold is supplied to the ice maker and the transparent ice heater 490 operates to produce transparent ice.

Industrial Applicability

[0327] The present specification relates to an ice maker and/or a refrigerator equipped with an ice maker. Since the sealing of the tray forming the cells may be improved by the lift, it has significant industrial applicability.

Claims

1. A refrigerator comprising:

a storage space in which food is stored;

a door for opening and closing the storage space;

an ice-making space provided in the door or the storage space;

a cooler for supplying cold to the storage space;

a cell provided in the ice-making space, being a space where a substance undergoes a phase change from a liquid state to a solid state;

a first tray providing a first wall forming at least a portion of the cell;

a second tray providing a second wall forming another portion of the cell;

a driving part for providing driving force to move the second tray; and

a lift provided to be contactable with the second tray, the lift bringing the second tray into close contact with the first tray based on an additional driving of the driving part.

2. The refrigerator according to claim 1, wherein a first part of the lift contacting the second tray and a second part of the second tray contacting the lift are formed of different materials so that any one of the lift and the second tray is deformed.

3. The refrigerator according to claim 2, wherein any one of the first part and the second part is consisted of a material having greater rigidity or elasticity than the other.

4. The refrigerator according to claim 2, wherein one of the first part and the second part is formed of a plastic material, and the other is formed of a rubber or silicone material.

5. The refrigerator according to claim 1, wherein the lift is configured to press the second tray at a plurality of points.

6. The refrigerator according to claim 1, wherein the lift includes a support bar extending in a longitudinal direction of the second tray and a protrusion protruding from the support bar to contact the second tray.

7. The refrigerator according to claim 1, comprising:

a shaft rotated by the driving part and to which the lift is coupled; and

a holder connecting the shaft and the driving part and coupled to a first through-hole of the lift.

8. The refrigerator according to claim 7, comprising a second tray supporter supporting the second tray and forming a second through-hole into which the holder is inserted.

9. The refrigerator according to claim 8, wherein a cross-sectional area of the holder is smaller than the size of the second through-hole so that the holder idles within the second through-hole during the additional driving of the driving part.

10. The refrigerator according to claim 8, wherein the second through-hole is formed larger than the first through-hole so that the lift idles during the additional driving of the driving part.

11. The refrigerator according to claim 7, wherein the holder includes an insertion bar inserted into the shaft and a protruding part protruding from an outer circumferential surface of the insertion bar to be inserted into the first through-hole.

12. The refrigerator according to claim 7, wherein the lift includes a support bar supporting the second tray and an extension part provided at an end of the support bar to form the first through-hole, wherein the lift is provided to be movable with respect to the center of the extension part.

13. The refrigerator according to claim 1, wherein the lift includes a first pressing device pressing a first part of the second tray and a second pressing device spaced apart from the first pressing device in a width direction of the second tray, the second pressing device being configured to press a second part of the second tray.

14. The refrigerator according to claim 1, comprising a holder connecting the lift and the driving part so that the lift further moves while the second tray does not move during the additional driving of the driving part.

15. The refrigerator according to claim 1, comprising a second tray cover covering at least a portion of the second tray, wherein the second tray cover includes a protrusion accommodating part for receiving a tray protrusion provided on the second tray.

16. The refrigerator according to claim 15, wherein the lift contacts the second tray so as to press the tray protrusion toward the protrusion accommodating part.

17. The refrigerator according to claim 15, comprising a bracket coupled to the refrigerator or the door and a stopper coupled to the bracket, wherein the stopper contacts the protrusion accommodating part.

18. The refrigerator according to claim 17, wherein the tray protrusion and the stopper are provided on opposite sides with respect to a surface of the protrusion accommodating part so that the stopper provides a reaction force when the tray protrusion presses the protrusion accommodating part.

19. A refrigerator comprising:

a storage space in which food is stored;

a door for opening and closing the storage space;

an ice-making space provided in the door or the storage space;

a cooler for supplying cold to the storage space;

a cell provided in the ice-making space, being a space where a substance undergoes a phase change from a liquid state to a solid state;

a first tray providing a first wall forming at least a portion of the cell;

a second tray providing a second wall forming another portion of the cell;

a driving part for providing driving force to move the second tray;

a lift provided to be contactable with the second tray and forming a through-hole; and

a holder inserted into the through-hole to connect the driving part and the lift.

20. The refrigerator according to claim 19, comprising a second tray supporter supporting the second tray and forming an additional through-hole into which the holder is inserted, wherein a cross-sectional area of the holder is smaller than the size of the additional through-hole so that the holder idles within the additional through-hole during driving of the driving part.

Drawing