[Technical Field]
[0001] Embodiments of the present disclosure relate to a refrigerator that is capable of
making carbonated ice.
[Background Art]
[0002] In general, a refrigerator is a home appliance that keeps food fresh by including
a storage compartment for storing food and a cold air supplying device for supplying
cold air to the storage compartment. An ice bucket for making ice and a dispenser
that dispenses water or ice from the outside without opening a door are also provided
in the refrigerator according to a user's need.
[0003] Furthermore, a carbonated water-making device for making carbonated water is also
provided in the refrigerator. The carbonated water-making device includes a carbon
dioxide (CO
2) gas cylinder in which a high-pressure CO
2 gas is stored, and a mixing tank in which CO
2 gas and general water are mixed with each other so that carbonated water can be made,
as known for example from
US 2013/0309361 A.
[0004] Carbonated water made in the mixing tank is connected to an external water intake
space through the dispenser and can be taken by a user from the outside without opening
the door.
[0005] An ice-making machine for making ice using internal cold air is also provided in
the refrigerator. An automatic ice-making machine according to the related art makes
general ice by using general water supplied from an external water supply source or
a general water tank and cooling the general water.
[Technical Solution]
[0006] It is an aspect of the present disclosure to provide a refrigerator that is capable
of making carbonated water and carbonated ice, and dispensing the carbonated water
and carbonated ice through a dispenser.
[0007] It is another aspect of the present disclosure to provide a refrigerator that minimizes
problems related to unstable ice separation and caught ice when carbonated ice is
made, and improves the reliability of the supply of carbonated ice and high-concentration
carbonated ice.
[0008] A refrigerator according to the present invention is disclosed in independent claim
1.
[0009] The dispensing general water flow path may not pass through the mixing tank.
[0010] The ice-making general water flow path may pass through the general water tank or
not.
[0011] The dispensing general water flow path may pass through the general water tank.
[0012] The carbonated water-making general water flow path may pass through the general
water tank.
[0013] The dispenser and the mixing tank may be disposed on the door, and the general water
tank and the ice-making machine may be disposed in the main body.
[0014] One end of a door hose that extends from the door and one end of a main body hose
that extends from the main body may be coupled to each other at an outside of the
main body using a fitting member.
[0015] The refrigerator may further include a hinge member that supports the door rotatably
and a cover member that is coupled to an upper side of the hinge member to cover the
hinge member, wherein the fitting member may be disposed in the cover member.
[0016] The refrigerator may further include: an ice bucket in which general ice or carbonated
ice made by the ice-making machine is stored; an auger that transports general ice
or carbonated ice stored in the ice bucket; and a chute that connects the ice bucket
and the dispenser, wherein the dispenser may provide general ice or carbonated ice
made by the ice-making machine to the outside of the refrigerator.
[0017] The ice-making general water flow path and the ice-making carbonated water flow path
may join at one join point and may form a common flow path.
[0018] A flow sensor may be disposed in each of the ice-making general water flow path and
the ice-making carbonated water flow path so that a predetermined amount of general
water or carbonated water is able to be supplied to the ice-making machine.
[0019] A flow sensor may be disposed on a common path of the ice-making general water flow
path and the ice-making carbonated water flow path so that a predetermined amount
of general water or carbonated water is able to be supplied to the ice-making machine.
[0020] The ice-making general water flow path may be diverged from the dispensing general
water flow path and the carbonated water-making general water flow path at a first
divergence point, and a first three-way valve may be disposed at the first divergence
point and may open/close the ice-making general water flow path, the dispensing general
water flow path, and the carbonated water-making general water flow path.
[0021] The dispensing general water flow path and the carbonated water-making general water
flow path may be diverged at a second divergence point, and a second three-way valve
may be disposed at the second divergence point and may open/close the dispensing general
water flow path and the carbonated water-making general water flow path.
[0022] The ice-making carbonated water flow path and the dispensing carbonated water flow
path are diverged at a third divergence point, and a third three-way valve may be
disposed at the third divergence point and may open/close the ice-making carbonated
water flow path and the dispensing carbonated water flow path.
[0023] The ice-making general water flow path, the dispensing general water flow path, and
the carbonated water-making general water flow path may be diverged at a first divergence
point, and a four-way valve may be disposed at the first divergence point and may
open/close the ice-making general water flow path, the dispensing general water flow
path, and the carbonated water-making general water flow path.
[0024] The ice-making carbonated water flow path and the dispensing carbonated water flow
path may be diverged at a second divergence point, and a three-way valve may be disposed
at the second divergence point and may open/close the ice-making carbonated water
flow path and the dispensing carbonated water flow path.
[0025] A first two-way valve may be disposed on a common flow path of the ice-making general
water flow path, the dispensing general water flow path and the carbonated water-making
general water flow path and may open/close the ice-making general water flow path,
the dispensing general water flow path, and the carbonated water-making general water
flow path.
[0026] The ice-making general water flow path and the carbonated water-making general water
flow path may be diverged at a first divergence point, and a three-way valve may be
disposed at the first divergence point and may open/close the ice-making general water
flow path and the carbonated water-making general water flow path.
[0027] The dispensing general water flow path and the dispensing carbonated water flow path
may join at one join point and may form a common flow path, and a second two-way valve
may be disposed on the common flow path and may open/close the common flow path.
[0028] In accordance with still another aspect of the present disclosure, a refrigerator
further includes:an ice-making tray disposed in the ice-making compartment anda cooling
device that supplies cooling energy to the ice-making tray, wherein the refrigerator
may have a general ice-making mode in which general ice is made by supplying general
water to the ice-making tray, and a carbonated ice-making mode in which carbonated
ice is made by supplying carbonated water to the ice-making tray, and each of the
general ice-making mode and the carbonated ice-making mode may include a water-supplying
operation of supplying water to the ice-making tray, an ice-making operation of making
ice by cooling the ice-making tray, and an ice-separating operation of separating
ice in the ice-making tray from the ice-making tray, and in the water-supplying operation
of the general ice-making mode, a first water-supply amount of general water may be
supplied to the ice-making tray, and in the water-supplying operation of the carbonated
ice-making mode, a second water-supply amount of carbonated water that is smaller
than the first water-supply amount may be supplied to the ice-making tray.
[0029] The amount of water-supply per unit time in the water-supplying operation of the
general ice-making mode and the amount of water-supply per unit time the water-supplying
operation of the carbonated ice-making mode may be controlled to be different from
each other.
[0030] A time for performing the water-supplying operation of the general ice-making mode
and a time for performing the water-supplying operation of the carbonated ice-making
mode may be controlled to be different from each other.
[0031] In accordance with yet still another aspect of the present disclosure, a refrigerator
further includes: an ice-making tray disposed in the ice-making compartment and a
cooling device that supplies cooling energy to the ice-making tray, wherein the refrigerator
may have a general ice-making mode in which general ice is made by supplying general
water to the ice-making tray, and a carbonated ice-making mode in which carbonated
ice is made by supplying carbonated water to the ice-making tray, and each of the
general ice-making mode and the carbonated ice-making mode may include an ice-making
compartment cooling operation of cooling the ice-making compartment, a water-supplying
operation of supplying water to the ice-making tray, an ice-making operation of making
ice by cooling the ice-making tray, and an ice-separating operation of separating
ice in the ice-making tray from the ice-making tray, and at an initial stage of the
ice-making operation of the general ice-making mode, the ice-making compartment may
have a first ice-making compartment temperature, and at an initial stage of the ice-making
operation of the carbonated ice-making mode, the ice-making compartment may have a
second ice-making compartment temperature that is lower than the first ice-making
compartment temperature.
[0032] The ice-making compartment cooling operation of the general ice-making mode may have
a first performance time, and the ice-making compartment cooling operation of the
carbonated ice-making mode may have a second performance time that is longer than
the first performance time.
[0033] In accordance with yet still another aspect of the present disclosure, a refrigerator
further includes: an ice-making tray disposed in the ice-making compartment and a
cooling device that supplies cooling energy to the ice-making tray, wherein the refrigerator
may have a general ice-making mode in which general ice is made by supplying general
water to the ice-making tray, and a carbonated ice-making mode in which carbonated
ice is made by supplying carbonated water to the ice-making tray, and each of the
general ice-making mode and the carbonated ice-making mode may include a water-supplying
operation of supplying water to the ice-making tray, an ice-making operation of making
ice by cooling the ice-making tray, and an ice-separating operation of separating
ice in the ice-making tray from the ice-making tray, and the ice-making operation
of the general ice-making mode may have a first ice-making speed, and the ice-making
operation of the carbonated ice-making mode may have a second ice-making speed that
is faster than the first ice-making speed.
[0034] The cooling device may include a compressor that constitutes a freezing cycle device,
and rotation speed of the compressor in the ice-making operation of the general ice-making
mode and rotation speed of the compressor in the ice-making operation of the carbonated
ice-making mode may be controlled to be different from each other.
[0035] The cooling device may include a blower fan that allows air to flow in the ice-making
compartment, and rotation speed of the blower fan in the ice-making operation of the
general ice-making mode and rotation speed of the blower fan in the ice-making operation
of the carbonated ice-making mode may be controlled to be different from each other.
[0036] In accordance with yet still another aspect of the present disclosure, a refrigerator
further includes: a carbonated water mode in which carbonated water is supplied to
the dispenser, and a carbonated ice mode in which carbonated water is provided to
the ice-making machine, and in a carbon dioxide (CO
2) injecting operation of the carbonated water mode, a first injection amount of CO
2 may be injected into the mixing tank, and in a CO
2 injecting operation of the carbonated ice mode, a second injection amount of CO
2 that is larger than the first injection amount may be injected into the mixing tank.
[0037] The number of times of injecting CO
2 in the CO
2 injecting operation of the carbonated water mode and the number of times of injecting
CO
2 in the CO
2 injecting operation of the carbonated ice mode may be controlled to be different
from each other.
[0038] An interval for injecting CO
2 in the CO
2 injecting operation of the carbonated water mode and an interval for injecting CO
2 in the CO
2 injecting operation of the carbonated ice mode may be controlled to be different
from each other.
Advantageous Effects of Invention
[0039] A refrigerator according to the present invention can also make carbonated ice. The
refrigerator can supply the made carbonated ice to a user through a dispenser.
[0040] Additionally, the refrigerator is capable of making general ice or carbonated ice
and supplies the general ice or carbonated ice to the user through the dispenser.
A phenomenon in which carbonated ice is large when the carbonated ice is made so that
ice separation is not smoothly performed or ice is caught on a component can be prevented
and thus reliability of the supply of carbonated ice can be improved. A higher-concentration
carbonated ice can be made.
Brief Description of Drawings
[0041] These and/or other aspects will become apparent and more readily appreciated from
the following description of embodiments, taken in conjunction with the accompanying
drawings in which:
FIG. 1 is a perspective view of an exterior of a refrigerator according to a first
embodiment of the present disclosure;
FIG. 2 is a perspective view of an interior of the refrigerator illustrated in FIG.
1;
FIG. 3 is an exploded perspective view of a mixing tank mounted on a door of the refrigerator
of FIG. 1;
FIG. 4 is a conceptual view of a main configuration of the refrigerator of FIG. 1;
FIG. 5 is a conceptual view of an ice-making general water flow path of the refrigerator
of FIG. 1;
FIG. 6 is a conceptual view of a dispensing general water flow path of the refrigerator
of FIG. 1;
FIG. 7 is a conceptual view of a carbonated water-making general water flow path of
the refrigerator of FIG. 1;
FIG. 8 is a conceptual view of an ice-making carbonated water flow path of the refrigerator
of FIG. 1;
FIG. 9 is a conceptual view of a dispensing carbonated water flow path of the refrigerator
of FIG. 1;
FIG. 10 is a schematic side cross-sectional view of the refrigerator of FIG. 1;
FIG. 11 is a conceptual view of a modified embodiment of the refrigerator of FIG.
1;
FIG. 12 is a conceptual view of another modified embodiment of the refrigerator of
FIG. 1;
FIG. 13 is a side cross-sectional view of still another modified embodiment of the
refrigerator of FIG. 1;
FIG. 14 is a conceptual view of a main configuration of a refrigerator according to
a second embodiment of the present disclosure;
FIG. 15 is a conceptual view of an ice-making general water flow path of the refrigerator
of FIG. 14;
FIG. 16 is a conceptual view of a dispensing general water flow path of the refrigerator
of FIG. 14;
FIG. 17 is a conceptual view of a carbonated water-making general water flow path
of the refrigerator of FIG. 14;
FIG. 18 is a conceptual view of an ice-making carbonated water flow path of the refrigerator
of FIG. 14;
FIG. 19 is a conceptual view of a dispensing carbonated water flow path of the refrigerator
of FIG. 14;
FIG. 20 is a schematic side cross-sectional view of the refrigerator of FIG. 14;
FIG. 21 is a conceptual view of a modified embodiment of the refrigerator of FIG.
14;
FIG. 22 is a conceptual view of another modified embodiment of the refrigerator of
FIG. 14;
FIG. 23 is a conceptual view of a main configuration of a refrigerator according to
a first example not part of the present invention;
FIG. 24 is a conceptual view of an ice-making general water flow path of the refrigerator
of FIG. 23;
FIG. 25 is a conceptual view of a dispensing general water flow path of the refrigerator
of FIG. 23;
FIG. 26 is a conceptual view of a carbonated water-making general water flow path
of the refrigerator of FIG. 23;
FIG. 27 is a conceptual view of an ice-making carbonated water flow path of the refrigerator
of FIG. 23;
FIG. 28 is a conceptual view of a dispensing carbonated water flow path of the refrigerator
of FIG. 23;
FIG. 29 is a schematic side cross-sectional view of the refrigerator of FIG. 23;
FIG. 30 is a view for describing a structure in which a fitting member and a flow
sensor are disposed in a cover member that covers a hinge member, in the refrigerator
of FIG. 23;
FIG. 31 is a conceptual view of a main configuration of a refrigerator according to
a third embodiment of the present disclosure;
FIG. 32 is a conceptual view of a main configuration of a refrigerator according to
a second example not part of the present invention;
FIG. 33 is a conceptual view of an ice-making general water flow path of the refrigerator
of FIG. 32;
FIG. 34 is a conceptual view of a dispensing general water flow path of the refrigerator
of FIG. 32;
FIG. 35 is a conceptual view of a carbonated water-making general water flow path
of the refrigerator of FIG. 32;
FIG. 36 is a conceptual view of an ice-making carbonated water flow path of the refrigerator
of FIG. 32;
FIG. 37 is a conceptual view of a dispensing carbonated water flow path of the refrigerator
of FIG. 32;
FIG. 38 is a view of a structure of an ice-making compartment and an ice-making machine
according to an embodiment of the present disclosure;
FIGS. 39 and 40 are views for comparing the amount of water supplied to an ice-making
tray in a general ice-making mode and a carbonated ice-making mode of a refrigerator
according to an embodiment of the present disclosure;
FIGS. 41 and 42 are views for comparing the temperature of an ice-making compartment
at an initial stage of an ice-making operation in the general ice-making mode and
the carbonated ice-making mode of the refrigerator according to an embodiment of the
present disclosure; and
FIGS. 43 and 44 are views for comparing ice-making speed of the ice-making operation
in the general ice-making mode and the carbonated ice-making mode of the refrigerator
according to an embodiment of the present disclosure.
Mode for the Invention
[0042] Reference will now be made in detail to the embodiments of the present disclosure,
examples of which are illustrated in the accompanying drawings, wherein like reference
numerals refer to like elements throughout.
[0043] Hereinafter, exemplary embodiments of the present disclosure will be described in
detail.
[0044] FIG. 1 is a perspective view of an exterior of a refrigerator 1 according to a first
embodiment of the present disclosure. FIG. 2 is a perspective view of an interior
of the refrigerator illustrated in FIG. 1. FIG. 3 is an exploded perspective view
of a mixing tank 110 mounted on a door of the refrigerator 1 of FIG. 1. FIG. 4 is
a conceptual view of a main configuration of the refrigerator 1 of FIG. 1.
[0045] Referring to FIGS. 1 through 4, a refrigerator 1 includes a main body 10, storage
compartments 20 and 30 formed in the main body 10, and a cooling device (not shown)
that supplies cold air into the storage compartments 20 and 30.
[0046] The main body 10 may include an inner case that forms the storage compartments 20
and 30, an outer case that is coupled to an outside of the inner case and forms an
exterior of the refrigerator 1, and an insulating material (not shown) that is disposed
between the inner case and the outer case and insulates the storage compartments 20
and 30.
[0047] The storage compartments 20 and 30 may be partitioned off into an upper refrigerator
compartment 20 and a lower freezer compartment 30 by an intermediate partition wall
11. The refrigerator compartment 20 may be maintained at a temperature of about 3°C
so that food can be kept under refrigeration, and the freezer compartment 30 may be
maintained at a temperature of about -18.5°C so that food can be kept in a freezer.
A shelf 23 on which food can be put, and at least one accommodation box 27 in which
food can be kept in a sealed state, may be provided at the refrigerator compartment
20.
[0048] In addition, an ice-making compartment 81 in which ice can be made, may be formed
in a corner of an upper portion of the refrigerator compartment 20 to be partitioned
off from the refrigerator compartment 20 by an ice-making compartment wall 82. An
ice-making machine 80 that makes general ice or carbonated ice, an ice bucket 83 in
which general ice or carbonated ice made by the ice-making machine 80 is stored, and
an auger (see 84 of FIG. 10) that transfers general ice or carbonated ice stored in
the ice bucket 83 to a chute 94 may be provided in the ice-making compartment 81.
[0049] Here, general ice refers to ice formed by cooling general water that does not include
carbonic acid, and carbonated ice refers to ice formed by cooling carbonated water
including carbonic acid. Hereinafter, when general water and carbonated water do not
necessarily need to be distinguished from each other, both general water and carbonated
water may be referred to as water, simply, and when general ice and carbonated ice
do not necessarily need to be distinguished from each other, both general ice and
carbonated ice may be referred to as ice, simply.
[0050] A general water tank 70 in which general water is stored, is provided in the refrigerator
compartment 20. The general water tank 70 may be disposed between a plurality of accommodation
boxes 27, as illustrated in FIG. 2. However, the present disclosure is not limited
thereto, and the general water tank 70 may be provided anywhere in the refrigerator
compartment 20 so that general water in the general water tank 70 may be cooled due
to cold air in the refrigerator compartment 20.
[0051] The general water tank 70 is connected to an external water supply source 40, such
as a water pipe, and may store general water purified by a water-purifying filter
50. A first three-way valve 261 may be disposed in a water supply hose that connects
the external water supply source 40 and the general water tank 70.
[0052] The refrigerator compartment 20 and the freezer compartment 30 may have an open front
side through which food may be put into/taken out of the refrigerator compartment
20 and the freezer compartment 30. The open front side of the refrigerator compartment
20 may be open/closed by a pair of rotating doors 21 and 22 hinge-coupled to the main
body 10, and the open front side of the freezer compartment 30 may be open/closed
by a sliding door 31 that may slide with respect to the main body 10. A door guard
24 in which food may be stored, may be provided at rear sides of the refrigerator
compartment doors 21 and 22.
[0053] Meanwhile, a gasket 28, which regulates cold air in the refrigerator compartment
20 by sealing a space between the refrigerator compartment doors 21 and 22 and the
main body 10 when the refrigerator compartment doors 21 and 22 are closed, may be
provided at an edge of each of the rear sides of the refrigerator compartment doors
21 and 22. In addition, a rotation bar 26, which regulates cold air in the refrigerator
compartment 20 by sealing a space between the refrigerator compartment door 21 and
the refrigerator compartment door 22 when the refrigerator compartment doors 21 and
22 are closed, may be provided at one refrigerator compartment door 21 of the refrigerator
compartment doors 21 and 22.
[0054] A dispenser 90 that allows for the user to take water or ice from the outside without
opening the refrigerator compartment door 21, is provided at one refrigerator compartment
door 21 of the refrigerator compartment doors 21 and 22.
[0055] The dispenser 90 may include a water intake space 91 in which water or ice may be
taken by inserting a container, such as a cup, a control panel 92 on which an input
button for manipulating various settings of the dispenser 90 and a display for displaying
various pieces of information of the dispenser 90 are disposed, and an operation lever
93 that may operate the dispenser 90 so that water or ice may be discharged.
[0056] The dispenser 90 may include the chute 94 that connects the ice-making machine 80
and the water intake space 91 so that ice made by the ice-making machine 80 may be
discharged into the water intake space 91.
[0057] A carbonated water-making module 100 that makes carbonated water may be mounted on
a rear side of the refrigerator compartment door 21 on which the dispenser 90 is provided.
[0058] The carbonated water-making module 100 is provided to make carbonated water in the
refrigerator 1. The carbonated water-making module 100 includes a carbon dioxide (CO
2) gas cylinder 120 in which a high-pressure CO
2 gas is stored, a mixing tank 110 in which general water and CO
2 gas are mixed with each other so that carbonated water may be made, a module case
140 having accommodation spaces 151, 152, and 153 in which the CO
2 gas cylinder 120 and the mixing tank 110 are accommodated, formed in the module case
140, and the module case 140 being coupled to the rear side of the refrigerator compartment
door 21, and a valve assembly 130.
[0059] A high-pressure CO
2 gas of about 45 to 60 bar may be stored in the CO
2 gas cylinder 120. The CO
2 gas cylinder 120 may be mounted on a cylinder connector 157 of the module case 140
and may be accommodated in a lower accommodation space 153 of the module case 140.
[0060] The CO
2 gas in the CO
2 gas cylinder 120 is supplied to the mixing tank 110 through a CO
2 gas supply flow path 200 that connects the CO
2 gas cylinder 120 and the mixing tank 110.
[0061] A CO
2 gas regulator 201 that regulates pressure of the CO
2 gas, a CO
2 gas supply valve 202 that opens/closes the CO
2 gas supply flow path 200, and a CO
2 gas backflow prevention valve 203 that prevents backflow of the CO
2 gas may be provided on the CO
2 gas supply flow path 200.
[0062] The CO
2 gas regulator 201 may adjust pressure of the CO
2 gas discharged from the CO
2 gas cylinder 120 and may supply the CO
2 gas to the mixing tank 110. The CO
2 gas regulator 201 may reduce pressure of the CO
2 gas to be equal to or less than about 10 bar.
[0063] In the mixing tank 110, the CO
2 gas supplied from the CO
2 gas cylinder 120 and general water supplied from the general water tank 70 are mixed
to make carbonated water, and the carbonated water is stored in the mixing tank 110.
[0064] An exhaust flow path 205 on which the CO
2 gas that remains in the mixing tank 110 is discharged so that general water may be
smoothly supplied to the mixing tank 110, may be provided in the mixing tank 110.
An exhaust valve 204 that opens/closes the exhaust flow path 205 may be provided on
the exhaust flow path 205.
[0065] A water level sensor 111 that measures the amount of general water supplied to the
mixing tank 110 or the amount of carbonated water made in the mixing tank 110, and
a temperature sensor 112 that measures the temperature of general water supplied to
the mixing tank 110 or the temperature of carbonated water made in the mixing tank
110 may be provided in the mixing tank 110.
[0066] A safety valve 114 that may discharge high-pressure CO
2 gas when the high-pressure CO
2 gas that exceeds a predetermined pressure is supplied to the mixing tank 110 due
to malfunction of the CO
2 gas regulator 201, may be provided in the mixing tank 110.
[0067] The mixing tank 110 may be formed to have a predetermined size and to accommodate
general water or carbonated water of about 1ℓ. The mixing tank 110 may be formed of
a stainless material having pressure-resistant and corrosion-resistant characteristics.
The mixing tank 110 may be accommodated in a first upper accommodation space 151 of
the module case 140. The mixing tank 110 may be supported by a bottom support portion
155 and a guide portion 156 of the module case 140.
[0068] The valve assembly 130 may include a second three-way valve 271 and a third three-way
valve 281 that will be described later. The valve assembly 130 may be accommodated
in a second upper accommodation space 152 of the module case 140.
[0069] The module case 140 may include a back case 150, one side of which is open, and a
cover 160 coupled to the open side of the back case 150.
[0070] At least one insertion groove 154 may be formed in the module case 140 in a position
corresponding to at least one insertion protrusion 25 formed on the rear side of the
door 21. Thus, the at least one insertion protrusion 25 is inserted into the at least
one insertion groove 154 so that the module case 140 may be easily mounted on the
rear side of the door 21. However, this coupling structure is just an example, and
the module case 140 may be separably mounted on the rear side of the door 21 using
various coupling structures including a screw-coupling structure or a hook-coupling
structure in addition to this insertion structure.
[0071] An insertion groove 158 and an insertion protrusion 162 are formed in positions corresponding
to the back case 150 and the cover 160, respectively, so that the cover 160 may be
coupled to the back case 150. However, this coupling structure is also just an example,
and the back case 150 and the cover 160 may also be separably coupled to each other
using various coupling structures.
[0072] In a state in which the cover 160 is coupled to the back case 150, the CO
2 gas cylinder 120, the mixing tank 110, and a valve assembly 130, which are disposed
in the module case 140, may not be exposed to the outside of the refrigerator 1. Thus,
an esthetic appealing effect of the door 21 may not be lowered.
[0073] A ventilation port 161 through which an inside and an outside of the module case
140 are in communication with each other, is formed in the cover 160 so that, even
when the cover 160 is coupled to the back case 150, cold air in the storage compartment
may be supplied to the mixing tank 110 in the module case 140 and carbonated water
stored in the mixing tank 110 may be cooled at an appropriate temperature.
[0074] From another viewpoint, the carbonated water-making module 100 of the refrigerator
1 according to an embodiment of the present disclosure may include a first module
having the first accommodation space 151 in which the mixing tank 110 is accommodated,
and the second accommodation space 153 in which the CO
2 gas cylinder 120 is accommodated.
[0075] In this case, the second module may be disposed at a lower side of the first module.
Also, the second module may be disposed in a lateral direction of the chute 94 that
guides ice in the ice bucket 83 into the water intake space 91.
[0076] FIG. 5 is a conceptual view of an ice-making general water flow path of the refrigerator
1 of FIG. 1. FIG. 6 is a conceptual view of a dispensing general water flow path of
the refrigerator 1 of FIG. 1. FIG. 7 is a conceptual view of a carbonated water-making
general water flow path of the refrigerator 1 of FIG. 1. FIG. 8 is a conceptual view
of an ice-making carbonated water flow path of the refrigerator 1 of FIG. 1. FIG.
9 is a conceptual view of a dispensing carbonated water flow path of the refrigerator
1 of FIG. 1. FIG. 10 is a schematic side cross-sectional view of the refrigerator
1 of FIG. 1.
[0077] As illustrated in FIG. 5, the refrigerator 1 includes an ice-making general water
flow path 210 that connects the external water supply source 40 and the ice-making
machine 80 so that general water may be supplied to the ice-making machine 80. General
water from the external water supply source 40 may be supplied to the ice-making machine
80 through a water pressure of the external water supply source 40 and valve control.
[0078] The ice-making general water flow path 210 may be provided to pass through the water-purifying
filter 50. Thus, general water from the external water supply source 40 may be purified
by the water-purifying filter 50 and may be supplied to the ice-making machine 80.
[0079] The ice-making general water flow path 210 is provided not to pass through the mixing
tank 110. This is to supply only general water, without carbonated water, to the ice-making
machine 80 regardless of whether carbonated water is stored in the mixing tank 110.
That is, if the ice-making general water flow path 210 would be disposed to pass through
the mixing tank 110, when carbonated water is stored in the mixing tank 110, carbonated
water in the mixing tank 110 would be supplied to the ice-making machine 80.
[0080] Since general water supplied to the ice-making machine 80 is cooled not in the general
water tank 70 but in the ice-making machine 80, the ice-making general water flow
path 210 does not pass through the general water tank 70. However, unlike in the current
embodiment, the ice-making general water flow path 210 may also be provided to pass
through the general water tank 70.
[0081] As illustrated in FIG. 6, the refrigerator 1 includes a dispensing general water
flow path 220 that connects the external water supply source 40 and the dispenser
90 so that general water may be supplied to the dispenser 90. General water from the
external water supply source 40 may be supplied to the dispenser 90 through a water
pressure of the external water supply source 40 and valve control.
[0082] The dispensing general water flow path 220 may be disposed to pass through the water-purifying
filter 50. Thus, general water from the external water supply source 40 may be purified
by the water-purifying filter 50 and may be supplied to the dispenser 90.
[0083] The dispensing general water flow path 220 is disposed not to pass through the mixing
tank 110. This is to supply only general water, without carbonated water regardless
of whether carbonated water is stored in the mixing tank 110, to the dispenser 90.
That is, if the dispensing general water flow path 220 would be disposed to pass through
the mixing tank 110, when carbonated water is stored in the mixing tank 110, carbonated
water would be supplied to the dispenser 90.
[0084] The dispensing general water flow path 220 may be provided to pass through the general
water tank 70. Thus, general water from the external water supply source 40 may be
cooled in the general water tank 70 and then may be supplied to the outside of the
refrigerator 1 through the dispenser 90.
[0085] As illustrated in FIG. 7, the refrigerator 1 may include a carbonated water-making
general water flow path 230 that connects the external water supply source 40 and
the mixing tank 110 so that general water may be supplied to the mixing tank 110.
General water from the external water supply source 40 may be supplied to the mixing
tank 110 through a water pressure of the external water supply source 40 and valve
control.
[0086] The carbonated water-making general water flow path 230 may be provided to pass through
the water-purifying filter 50. Thus, general water from the external water supply
source 40 may be purified by the water-purifying filter 50 and may be supplied to
the mixing tank 110.
[0087] The carbonated water-making general water flow path 230 may be provided to pass through
the general water tank 70. Thus, general water from the external water supply source
40 may be cooled in the general water tank 70 and then may be supplied to the mixing
tank 110.
[0088] As illustrated in FIG. 8, the refrigerator 1 may include an ice-making carbonated
water flow path 240 that connects the mixing tank 110 and the ice-making machine 80
so that carbonated water may be supplied to the ice-making machine 80. Carbonated
water in the mixing tank 110 may be supplied to the ice-making machine 80 through
a water pressure of the mixing tank 110 and valve control.
[0089] As illustrated in FIG. 9, the refrigerator 1 may include a dispensing carbonated
water flow path 250 that connects the mixing tank 110 and the dispenser 90 so that
carbonated water may be supplied to the dispenser 90. Carbonated water in the mixing
tank 110 may be supplied to the dispenser 90 through a water pressure of the mixing
tank 110 and valve control.
[0090] In this way, the refrigerator 1 may have three general water flow paths 210, 220,
and 230 which transfer general water, and two carbonated water flow paths 240 and
250 which transfer carbonated water.
[0091] Meanwhile, the three general water flow paths 210, 220, and 230, i.e., the ice-making
general water flow path 210, the dispensing general water flow path 220, and the carbonated
water-making general water flow path 230 may extend as a common flow path from the
external water supply source 40 to a first divergence point 260.
[0092] At the first divergence point 260, the ice-making general water flow path 210 may
be diverged from the dispensing general water flow path 220 and the carbonated water-making
general water flow path 230. To this end, the first three-way valve 261 may be provided
at the first divergence point 260. The first three-way valve 261 may have an inlet
port 262, a first outlet port 263, and a second outlet port 264.
[0093] The first outlet port 263 of the first three-way valve 261 may open/close the ice-making
general water flow path 210. That is, when the first outlet port 263 of the first
three-way valve 261 is open/closed, the ice-making general water flow path 210 may
be open/closed.
[0094] The second outlet port 264 of the first three-way valve 261 may open/close the dispensing
general water flow path 220 and the carbonated water-making general water flow path
230.
[0095] That is, when the second outlet port 264 of the first three-way valve 261 is open/
closed, the dispensing general water flow path 220 and the carbonated water-making
general water flow path 230 may be open/closed.
[0096] The first outlet port 263 and the second outlet port 264 may be open/closed independently.
That is, only the first outlet port 263 may be open, or only the second outlet port
264 may be open, or both the first outlet port 263 and the second outlet port 264
may be open, or both may be closed.
[0097] The dispensing general water flow path 220 and the carbonated water-making general
water flow path 230 may extend as a common flow path from the first divergence point
260 to a second divergence point 270 and may be diverged at the second divergence
point 270. To this end, the second three-way valve 271 may be provided at the second
divergence point 270. The second three-way valve 271 may have an inlet port 272, a
first outlet port 273, and a second outlet port 274.
[0098] The first outlet port 273 of the second three-way valve 271 may open/close the dispensing
general water flow path 220. That is, when the first outlet port 273 of the second
three-way valve 271 is open/closed, the dispensing general water flow path 220 may
be open/closed.
[0099] The second outlet port 274 of the second three-way valve 271 may open/close the carbonated
water-making general water flow path 230. That is, when the second outlet port 274
of the second three-way valve 271 is open/closed, the carbonated water-making general
water flow path 230 may be open/closed.
[0100] The first outlet port 273 and the second outlet port 274 may be open/closed independently.
That is, only the first outlet port 273 may be open, or only the second outlet port
274 may be open, or both the first outlet port 273 and the second outlet port 274
may be open, or both may be closed.
[0101] Meanwhile, the two carbonated water flow paths 240 and 250, i.e., the ice-making
carbonated water flow path 240 and the dispensing carbonated water flow path 250 extend
as a common flow path from the mixing tank 110 to a third divergence point 280 and
are diverged at the third divergence point 280. To this end, a third three-way valve
281 is provided at the third divergence point 280. The third three-way valve 281 has
an inlet port 282, a first outlet port 283, and a second outlet port 284.
[0102] The first outlet port 283 of the third three-way valve 281 may open/close the ice-making
carbonated water flow path 240. That is, when the first outlet port 283 of the third
three-way valve 281 is open/closed, the ice-making carbonated water flow path 240
may be open/closed.
[0103] The second outlet port 284 of the third three-way valve 281 may open/close the dispensing
carbonated water flow path 250. That is, when the second outlet port 284 of the third
three-way valve 281 is open/closed, the dispensing carbonated water flow path 250
may be open/closed.
[0104] The first outlet port 283 and the second outlet port 284 may be open/closed independently.
That is, only the first outlet port 283 may be open, or only the second outlet port
284 may be open, or both the first outlet port 283 and the second outlet port 284
may be open, or both may be closed.
[0105] A carbonated water regulator 206 that controls pressure of carbonated water discharged
from the mixing tank 110 may be disposed on a common path of the ice-making carbonated
water flow path 240 and the dispensing carbonated water flow path 250. Meanwhile,
the ice-making general water flow path 210 and the ice-making carbonated water flow
path 240 may join at one join point 242 and may extend as a common flow path 244 up
to the ice-making machine 80. The ice-making general water flow path 210 and the ice-making
carbonated water flow path 240 may be connected to each other using a Y fitting member
243.
[0106] The Y fitting member 243 may have a first inlet port 243a, a second inlet port 243b,
and an outlet port 243c. The Y fitting member 243 may prevent water introduced from
one of the first and second inlet ports 243a and 243b from flowing to the other one
of the first and second inlet ports 243a and 243b and may allow water to flow only
to the outlet port 243c.
[0107] The Y fitting member 243 may be disposed in various positions. For example, as illustrated
in FIG. 10, the Y fitting member 243 may be disposed at an outside of the rear of
the main body 10. That is, the ice-making general water flow path 210 and the ice-making
carbonated water flow path 240 may be coupled to each other at the outside of the
rear of the main body 10.
[0108] Alternatively, as illustrated in FIG. 13, a Y fitting member 247 may be disposed
in the main body 10. That is, the ice-making general water flow path 210 and the ice-making
carbonated water flow path 240 may be coupled to each other in the main body 10. Reference
numeral 246 represents a join point of the ice-making general water flow path 210
and the ice-making carbonated water flow path 240, and reference numerals 247a, 247b,
and 247c represent a first inlet port, a second inlet port, and an outlet port of
the Y fitting member 247, respectively.
[0109] As illustrated in FIG. 11, a flow sensor 211 may be disposed on the ice-making general
water flow path 210 so that a predetermined amount of general water may be supplied
to the ice-making machine 80. In addition, a flow sensor 241 may be disposed on the
ice-making carbonated water flow path 240 so that a predetermined amount of carbonated
water may be supplied to the ice-making machine 80.
[0110] Unlike the embodiment shown in FIG. 11, a flow sensor 245, as illustrated in FIG.
12, may be disposed on the common flow path 244 of the ice-making general water flow
path 210 and the ice-making carbonated water flow path 240 and may measure the amount
of general water or carbonated water supplied to the ice-making machine 80.
[0111] Meanwhile, the dispensing general water flow path 220 and the dispensing carbonated
water flow path 250 may join at one join point 251 and may extend as a common flow
path 254 up to the dispenser 90. A three way valve 252 may be provided at the joint
point 251. The dispensing general water flow path 220 and the dispensing carbonated
water flow path 250 may be connected to each other using the Y fitting member 247.
[0112] A remnant water prevention valve 207 that prevents remnant water may be disposed
on the common flow path 254 of the dispensing general water flow path 220 and the
dispensing carbonated water flow path 250. The remnant water prevention valve 207
may be disposed close to an end of the common flow path 254 of the dispensing general
water flow path 220 and the dispensing carbonated water flow path 250.
[0113] The above-described various flow paths 210, 220, 230, 240, and 250 may be formed
using a hose. In particular, in the current embodiment, the dispenser 90 and the mixing
tank 110 are provided at the door 21 and the general water tank 70 and the ice-making
machine 80 are provided in the main body 10. Thus, the flow paths 210, 220, 230, 240,
and 250 may be formed by coupling a door hose 295, as shown in FIGS. 10 and 13, that
extends from the door 21 and a main body hose 297 that extends from the main body
10.
[0114] Returning to the embodiment illustrated in FIG. 10, the door hose 295 and the main
body hose 297 may be coupled to each other at an upper portion of an outside of the
main body 10. The door hose 295 and the main body hose 297 may be coupled to each
other using a straight fitting member 299.
[0115] The refrigerator 1 may include a hinge member (see 290 of FIG. 30) that supports
the door 21 rotatably and a cover member 292 coupled to an upper side of the hinge
member 290 to cover the hinge member 290 and having an internal space 293 formed in
the cover member 292. The hinge member 290 may include a hinge shaft (see 294 of FIG.
30) inserted into a shaft insertion hole (see 21a of FIG. 30) of the door 21 and having
a hollow portion (see 291 of FIG. 30).
[0116] The door hose 295 may extend from an inside of the door 21 to an outside of the door
21 through the hollow portion 291 of the hinge shaft 294. The main body hose 297 may
penetrate an upper wall 10a of the main body 10 and may extend from an inside of the
main body 10 to an outside of the main body 10.
[0117] The straight fitting member 299 that couples the door hose 295 and the main body
hose 297 may be disposed in the internal space 293 of the cover member 292 and may
not be exposed to the outside of the refrigerator 1.
[0118] FIG. 14 is a conceptual view of a main configuration of a refrigerator 1 according
to a second embodiment of the present disclosure. FIG. 15 is a conceptual view of
an ice-making general water flow path of the refrigerator 1 of FIG. 14. FIG. 16 is
a conceptual view of a dispensing general water flow path of the refrigerator 1 of
FIG. 14. FIG. 17 is a conceptual view of a carbonated water-making general water flow
path of the refrigerator 1 of FIG. 14. FIG. 18 is a conceptual view of an ice-making
carbonated water flow path of the refrigerator 1 of FIG. 14. FIG. 19 is a conceptual
view of a dispensing carbonated water flow path of the refrigerator 1 of FIG. 14.
FIG. 20 is a schematic side cross-sectional view of the refrigerator 1 of FIG. 14.
[0119] FIG. 21 is a conceptual view of a modified embodiment of the refrigerator 1 of FIG.
14. FIG. 22 is a conceptual view of another modified embodiment of the refrigerator
1 of FIG. 14.
[0120] A refrigerator according to a second embodiment of the present disclosure will be
described with reference to FIGS. 14 through 22. Like reference numerals are used
for the same configuration as the first embodiment, and a description thereof will
be omitted.
[0121] As illustrated in FIG. 15, the refrigerator 1 includes an ice-making general water
flow path 310 that connects an external water supply source 40 and an ice-making machine
80 so that general water may be supplied to the ice-making machine 80.
[0122] The ice-making general water flow path 310 may be disposed to pass through a water-purifying
filter 50. The ice-making general water flow path 310 may be disposed not to pass
through a mixing tank 110. The ice-making general water flow path 310 may be disposed
to pass through a general water tank 70.
[0123] As illustrated in FIG. 16, the refrigerator 1 may include a dispensing general water
flow path 320 that connects the external water supply source 40 and a dispenser 90
so that general water may be supplied to the dispenser 90.
[0124] The dispensing general water flow path 320 may be disposed to pass through the water-purifying
filter 50. The dispensing general water flow path 320 may be disposed not to pass
through the mixing tank 110. The dispensing general water flow path 320 may be disposed
to pass through the general water tank 70.
[0125] As illustrated in FIG. 17, the refrigerator 1 includes a carbonated water-making
general water flow path 330 that connects the external water supply source 40 and
the mixing tank 110 so that general water may be supplied to the mixing tank 110.
[0126] The carbonated water-making general water flow path 330 may be disposed to pass through
the water-purifying filter 50. The carbonated water-making general water flow path
330 may be disposed to pass through the general water tank 70.
[0127] As illustrated in FIG. 18, the refrigerator 1 includes an ice-making carbonated water
flow path 340 that connects the mixing tank 110 and the ice-making machine 80 so that
carbonated water may be supplied to the ice-making machine 80.
[0128] As illustrated in FIG. 19, the refrigerator 1 includes a dispensing carbonated water
flow path 350 that connects the mixing tank 110 and the dispenser 90 so that carbonated
water may be supplied to the dispenser 90.
[0129] The ice-making general water flow path 310, the dispensing general water flow path
320, and the carbonated water-making general water flow path 330 may be diverged at
a first divergence point 360, and a four-way valve 361 may be disposed at the first
divergence point 360.
[0130] The four-way valve 361 may have an inlet port 362, a first outlet port 363 that opens/
closes the ice-making general water flow path 310, a second outlet port 364 that opens/
closes the dispensing general water flow path 320, and a third outlet port 365 that
opens/closes the carbonated water-making general water flow path 330. The first outlet
port 363, the second outlet port 364, and the third outlet port 365 may be open/closed
independently.
[0131] The ice-making carbonated water flow path 340 and the dispensing carbonated water
flow path 350 are diverged at a second divergence point 370, and a three-way valve
371 may be disposed at the second divergence point 370.
[0132] The three-way valve 371 has an inlet port 372, a first outlet port 373 that opens/closes
the ice-making carbonated water flow path 340, and a second outlet port 374 that opens/closes
the dispensing carbonated water flow path 350. The first outlet port 373 and the second
outlet port 374 may be open/closed independently.
[0133] The ice-making general water flow path 310 and the ice-making carbonated water flow
path 340 may join at one join point 342 and may extend as a common flow path 344 up
to the ice-making machine 80. The ice-making general water flow path 310 and the ice-making
carbonated water flow path 340 may be connected to each other using a Y fitting member
343.
[0134] The Y fitting member 343 may have a first inlet port 343a, a second inlet port 343b,
and an outlet port 343c. The Y fitting member 343 may prevent water introduced from
one of the first and second inlet ports 343a and 343b from flowing to the other one
of the first and second inlet ports 343a and 343b and may allow water to flow only
to the outlet port 343c.
[0135] As illustrated in FIG. 20, a door hose 395 and a main body hose 397 may be coupled
to each other at an upper side of an outside of a main body 10. The door hose 395
and the main body hose 397 may be coupled to each other using a straight fitting member
299.
[0136] As illustrated in FIG. 21, a flow sensor 311 may be disposed on the ice-making general
water flow path 310 so that a predetermined amount of general water may be supplied
to the ice-making machine 80. In addition, a flow sensor 341 may be disposed on the
ice-making carbonated water flow path 340 so that a predetermined amount of carbonated
water may be supplied to the ice-making machine 80.
[0137] As illustrated in FIG. 22, one flow sensor 345 may be disposed on the common flow
path 344 of the ice-making general water flow path 310 and the ice-making carbonated
water flow path 340, and may measure the amount of general water or carbonated water
supplied to the ice-making machine 80.
[0138] FIG. 23 is a conceptual view of a main configuration of a refrigerator according
to an example not part of the present invention. FIG. 24 is a conceptual view of an
ice-making general water flow path of the refrigerator 1 of FIG. 23. FIG. 25 is a
conceptual view of a dispensing general water flow path of the refrigerator1 1 of
FIG. 23. FIG. 26 is a conceptual view of a carbonated water-making general water flow
path of the refrigerator of FIG. 23. FIG. 27 is a conceptual view of an ice-making
carbonated water flow path of the refrigerator 1 of FIG. 23. FIG. 28 is a conceptual
view of a dispensing carbonated water flow path of the refrigerator 1 of FIG. 23.
FIG. 29 is a schematic side cross-sectional view of the refrigerator 1 of FIG. 23.
[0139] A refrigerator 1 according to an example not part of the present invention will be
described with reference to FIGS. 23 through 29. Like reference numerals are used
for the same configuration as the above-described embodiments, and a description thereof
will be omitted.
[0140] As illustrated in FIG. 24, the refrigerator 1 includes an ice-making general water
flow path 410 that connects an external water supply source 40 and an ice-making machine
80 so that general water may be supplied to the ice-making machine 80.
[0141] The ice-making general water flow path 410 may be disposed to pass through a water-purifying
filter 50. The ice-making general water flow path 410 is disposed not to pass a mixing
tank 110. The ice-making general water flow path 410 may be disposed to pass through
a general water tank 70.
[0142] As illustrated in FIG. 25, the refrigerator 1 includes a dispensing general water
flow path 420 that connects the external water supply source 40 and a dispenser 90
so that general water may be supplied to the dispenser 90.
[0143] The dispensing general water flow path 420 may be disposed to pass through the water-purifying
filter 50. The dispensing general water flow path 420 is disposed not to pass through
the mixing tank 110. The dispensing general water flow path 420 may be disposed to
pass through the general water tank 70.
[0144] As illustrated in FIG. 26, the refrigerator 1 may include a carbonated water-making
general water flow path 430 that connects the external water supply source 40 and
the mixing tank 110 so that general water may be supplied to the mixing tank 110.
[0145] The carbonated water-making general water flow path 430 may be disposed to pass through
the water-purifying filter 50. The carbonated water-making general water flow path
430 may be disposed to pass through the general water tank 70.
[0146] As illustrated in FIG. 27, the refrigerator 1 includes an ice-making carbonated water
flow path 440 that connects the mixing tank 110 and the ice-making machine 80 so that
carbonated water may be supplied to the ice-making machine 80.
[0147] As illustrated in FIG. 28, the refrigerator 1 includes a dispensing carbonated water
flow path 450 that connects the mixing tank 110 and the dispenser 90 so that carbonated
water may be supplied to the dispenser 90.
[0148] A first two-way valve 461 may be disposed on a common flow path of the ice-making
general water flow path 410, the dispensing general water flow path 420, and the carbonated
water-making general water flow path 430 and may open/close the ice-making general
water flow path 410, the dispensing general water flow path 420, and the carbonated
water-making general water flow path 430.
[0149] The ice-making general water flow path 410 and the carbonated water-making general
water flow path 430 may be diverged at a first divergence point 470, and a three-way
valve 471 may be disposed at the first divergence point 470 and may open/ close the
ice-making general water flow path 410 and the carbonated water-making general water
flow path 430.
[0150] The three-way valve 471 may have an inlet port 472, a first outlet port 473 that
opens/closes the ice-making general water flow path 410, and a second outlet port
474 that opens/closes the carbonated water-making general water flow path 430. The
first outlet port 473 and the second outlet port 474 may be open/closed independently.
[0151] The dispensing general water flow path 420 and the dispensing carbonated water flow
path 450 may join at one join point 454 and may form a common flow path 454, and a
second two-way valve 207 may be disposed on the common flow path of the dispensing
general water flow path 420 and the dispensing carbonated water flow path 450. Here,
the second two-way valve 207 may be the remnant water prevention valve 207 in the
above-described embodiment.
[0152] A third two-way valve 481 may be disposed on the ice-making carbonated water flow
path 440 and may open/close the ice-making carbonated water flow path 440.
[0153] A fourth two-way valve 491 may be disposed on the dispensing carbonated water flow
path 450 and may open/close the dispensing carbonated water flow path 450.
[0154] As illustrated in the first example not part of the present invention of FIG. 24,
the ice-making general water flow path 410 and the ice-making carbonated water flow
path 440 may join at one join point 442 and may extend as a common flow path 444 up
to the ice-making machine 80. The ice-making general water flow path 410 and the ice-making
carbonated water flow path 440 may be connected to each other using a Y fitting member
443.
[0155] The Y fitting member 443 may have a first inlet port 443a, a second inlet port 443b,
and an outlet port 443c. The Y fitting member 443 may prevent water introduced from
one of the first and second inlet ports 443a and 443b from flowing to the other one
of the first and second inlet ports 443a and 443b and may allow water to flow only
to the outlet port 443c.
[0156] One flow sensor 445 may be disposed on the common flow path 444 of the ice-making
general water flow path 410 and the ice-making carbonated water flow path 440 and
may measure the amount of general water or carbonated water supplied to the ice-making
machine 80.
[0157] As illustrated in FIGS. 29 and 30, a door hose 495 and a main body hose 497 may be
coupled to each other at an upper side of an outside of a main body 10. The door hose
495 and the main body hose 497 may be coupled to each other using a straight fitting
member 299. The fitting member 299 and the flow sensor 445 may be disposed in an internal
space 293 of a cover member 292 and may not be exposed to the outside of the refrigerator
1.
[0158] FIG. 31 is a conceptual view of a main configuration of the refrigerator 1 according
to a third embodiment of the present disclosure. The refrigerator according to the
third embodiment of the present disclosure will be described with reference to FIG.
31. Like reference numerals are used for the same configuration as the first embodiment.
[0159] The refrigerator according to the first and second embodiments and to the first example
not according to the present invention uses a CO
2 spray technique when making carbonated water. That is, a mixing tank 110 is filled
with general water, and high-pressure CO
2 is sprayed into the mixing tank 110, and general water and CO
2 are mixed with each other in the mixing tank 110. The mixing tank 110 has pressure-resisting
characteristics in which the mixing tank 110 withstands a high pressure of CO
2.
[0160] In the CO
2 spray technique, as CO
2 is sprayed at a higher pressure, carbonated water may be rapidly made. A manual CO
2 spray technique is a technique for making carbonated water more conveniently. In
an automatic CO
2 spray technique, the number of times of spraying CO
2 is controlled so that the concentration of carbonated water may be controlled. That
is, the amount of general water and the amount of injecting CO
2 may be controlled so that the concentration of carbonated water may be controlled.
[0161] The refrigerator according to the third embodiment of the present disclosure uses
not the CO
2 spray technique but a water spray technique. That is, in the water spray technique,
general water is sprayed into the mixing tank 110 in which CO
2 is present. To this end, the refrigerator 1 has a water pump 400 that sprays general
water at a higher pressure than pressure of CO
2. The technique for spraying general water using the water pump 400 has the advantage
of rapidly making high-concentration carbonated water compared to the technique for
spraying CO
2.
[0162] FIG. 32 is a conceptual view of a main configuration of a refrigerator according
to a second example not part of the present invention. FIG. 33 is a conceptual view
of an ice-making general water flow path of the refrigerator 1 of FIG. 32. FIG. 34
is a conceptual view of a dispensing general water flow path of the refrigerator 1
of FIG. 32. FIG. 35 is a conceptual view of a carbonated water-making general water
flow path of the refrigerator 1 of FIG. 32. FIG. 36 is a conceptual view of an ice-making
carbonated water flow path of the refrigerator 1 of FIG. 32. FIG. 37 is a conceptual
view of a dispensing carbonated water flow path of the refrigerator 1 of FIG. 32.
[0163] A refrigerator 1 according to a second example not part of the present invention
will be described with reference to FIGS. 32 through 37. Like reference numerals are
used for the same configuration as the above-described embodiments.
[0164] In the first and second embodiments, as well as the first example not part of the
present invention, a CO
2 spray technique is used as a technique for making carbonated water, and in the third
embodiment, a general water spray technique is used. However, in the second example
not part of the present invention, a continuous making technique is used.
[0165] The continuous making technique is a technique in which general water and CO
2 are simultaneously mixed with each other at the same pressure. Since the pressure
of general water is generally low, general water and CO
2 are mixed with each other at a low pressure. Thus, it may take long to stabilize
the mixture. However, the continuous making technique may have a simple structure.
[0166] As illustrated in FIG. 32, the refrigerator 1 includes a water-purifying filter 50
that purifies general water, a general water tank 70 in which general water supplied
from an external water supply source 40 is stored, a CO
2 gas cylinder 120 in which a CO
2 gas is stored, a pressure operation valve 501 that sprays the CO
2 gas and general water at the same pressure, a mixing valve 502 that mixes the CO
2 gas and general water sprayed by the pressure operation valve 501 at the same pressure
to make carbonated water, a carbonated water tank 504 in which carbonated water is
stored, a dispenser 90 that provides general water or carbonated water to the outside
of the refrigerator 1, and an ice-making machine 80 that makes general ice or carbonated
ice.
[0167] The refrigerator 1 may include an ice-making general water flow path (see 510 of
FIG. 33) that provides general water to the ice-making machine 80, a dispensing general
water flow path (see 520 of FIG. 34) that provides general water to the dispenser
90, a carbonated water-making general water flow path (see 530 of FIG. 35) that provides
general water to the pressure operation valve 501, an ice-making carbonated water
flow path 540 that provides carbonated water to the ice-making machine 80, and a dispensing
carbonated water flow path 550 that provides carbonated water to the dispenser 90.
[0168] The ice-making general water flow path (see 510 of FIG. 33) does not pass through
the mixing valve 502 and the carbonated water tank 504. Thus, only general water except
for carbonated water regardless of whether carbonated water is stored in the carbonated
water tank 504, may be supplied to the ice-making machine 80.
[0169] The dispensing general water flow path (see 520 of FIG. 34) does not pass through
the mixing valve 502 and the carbonated water tank 504. Thus, only general water,
without except for carbonated water regardless of whether carbonated water is stored
in the carbonated water tank 504, may be supplied to the ice-making machine 80.
[0170] Reference numeral 503 is a safety valve, and reference numerals 551, 555, and 556
are three-way valves for switching a flow path, and reference numerals 552 and 553
are two-way valves.
[0171] FIG. 38 is a view of a structure of an ice-making compartment 81 and an ice-making
machine 80 according to an embodiment of the present disclosure. FIGS. 39 and 40 are
views for comparing the amount of water supplied to an ice-making tray 80a in a general
ice-making mode and a carbonated ice-making mode of a refrigerator 1 according to
an embodiment of the present disclosure.
[0172] An ice-making machine 80 may be disposed in an ice-making compartment 81. The ice-making
compartment 81 may be formed to be partitioned by a separate ice-making compartment
wall 82 (see FIG. 2) inside a refrigerator compartment 20, as in the current embodiment.
However, unlike this embodiment, the ice-making compartment 81 may also be formed
in a freezer compartment.
[0173] The ice-making machine 80 may include an ice-making tray 80a to which general water
or carbonated water is supplied, and an ejector 80b that separates general ice or
carbonated ice generated in the ice-making tray 80a from the ice-making tray 80a and
drops the general ice or carbonated ice into an ice bucket 83.
[0174] A refrigerant pipe 99 that allows a refrigerant to flow and supplies cooling energy
into the ice-making tray 80a and the ice-making compartment 81, may contact the ice-making
tray 80a. That is, the ice-making machine 80 according to an embodiment of the present
disclosure may be cooled through a direct cooling technique. However, unlike in the
current embodiment, an indirect cooling technique, whereby cold air generated in a
separate cooling compartment is supplied into the ice-making compartment 81 via a
duct, may also be used.
[0175] An ice-separating heater (not shown) may be disposed in the ice-making tray 80a to
heat the ice-making tray 80a during ice separation so that ice separation may be smoothly
performed. A blower fan 97 that circulates air inside the ice-making compartment 81
may be disposed in the ice-making compartment 81.
[0176] A cooling device that supplies cooling energy into the ice-making compartment 81
and the ice-making tray 80a may include a freezing cycle device including a compressor,
a condenser, an expansion valve, an evaporator, and a refrigerant pipe 99, and the
blower fan 97 that allows air to flow.
[0177] The refrigerator 1 according to the present invention has a general ice-making mode
in which general ice is made, and a carbonated ice-making mode in which carbonated
ice is made. In the general ice-making mode, general water is supplied into the ice-making
tray 80a, and in the carbonated ice-making mode, carbonated water is supplied into
the ice-making tray 80a.
[0178] The general ice-making mode and the carbonated ice-making mode commonly include an
ice-making compartment cooling operation of cooling the ice-making compartment 81,
a water-supplying operation of supplying water into the ice-making tray 80a, an ice-making
operation of making ice by cooling the ice-making tray 80a, and an ice-separating
operation of separating ice in the ice-making tray 80a from the ice-making tray 80a.
[0179] After the ice-separating operation, the general ice-making mode and the carbonated
ice-making mode may further include a full ice detecting operation of determining
whether the ice bucket 83 is fully filled with ice. If it is determined that the ice
bucket 83 is not fully filled with ice, a series of operations may be repeatedly performed
again.
[0180] In the current embodiment, the ice-making operation includes a water-supplying operation.
That is, at an initial stage of the ice-making operation, water supply may be performed.
[0181] In this way, the general ice-making mode and the carbonated ice-making mode commonly
include an ice-making compartment cooling operation, a water-supplying operation,
an ice-making operation and an ice-separating operation. Since characteristics of
general ice and carbonated ice are different from each other, a controlling method
in each of the operations may be changed.
[0182] According to an embodiment of the present disclosure, the amount of water supplied
into the ice-making tray 80a in the water-supplying operation of the general ice-making
mode and the amount of water supplied into the ice-making tray 80a in the water-supplying
operation of the carbonated ice-making mode may be different from each other.
[0183] As illustrated in FIGS. 39 and 40, when the amount of water supply of general water
supplied into the ice-making tray 80a in the water-supplying operation of the general
ice-making mode is S
∗ W1, the amount of water supply of carbonated water supplied into the ice-making tray
80a in the water-supplying operation of the carbonated ice-making mode may be S
∗ W2 (W1 > W2). That is, the amount of water supply of carbonated water supplied into
the ice-making tray 80a in the water-supplying operation of the carbonated ice-making
mode may be smaller than the amount of water supply of general water supplied into
the ice-making tray 80a in the water-supplying operation of the general ice-making
mode. This is because, when the same amount of water is cooled, the volume of carbonated
ice is increased due to a CO
2 gas contained in carbonated water compared to the volume of general ice.
[0184] In this way, as a method of adjusting the amount of water supply, as illustrated
in FIGS. 39 and 40, a time S for performing the water-supplying operation may be set
to be the same, while the amount of water supply per unit time may be changed. However,
unlike this embodiment, the amount of water supply per time may be set to be the same,
while the time S for performing the water-supplying operation may be set to be different.
[0185] FIGS. 41 and 42 are views for comparing the temperature of an ice-making compartment
at an initial stage of an ice-making operation in the general ice-making mode and
the carbonated ice-making mode of the refrigerator 1 according to an embodiment of
the present disclosure, and FIGS. 43 and 44 are views for comparing ice-making speed
of the ice-making operation in the general ice-making mode and the carbonated ice-making
mode of the refrigerator 1 according to an embodiment of the present disclosure.
[0186] A method of making high-concentration carbonated ice in a carbonated ice-making mode
according to an embodiment of the present disclosure will be described with reference
to FIGS. 41 through 44. The method of making high-concentration carbonated ice includes
a method of lowering temperature of an ice-making compartment 81 at an initial stage
of an ice-making operation. This is to increase solubility of CO
2 according to the Henry's law.
[0187] As illustrated in FIGS. 41 and 42, when the temperature of the ice-making compartment
81 at the initial stage of the ice-making operation of the general ice-making mode
is T1, the temperature of the ice-making compartment 81 at the initial stage of the
ice-making operation of the carbonated ice-making mode may be T2 (T1 > T2).
[0188] This may be achieved when a time for performing an ice-making compartment cooling
operation is increased in the carbonated ice-making mode than in the general ice-making
mode. That is, when the time for performing the ice-making compartment cooling operation
in the general ice-making mode is X1 and the time for performing the ice-making compartment
cooling operation in the carbonated ice-making mode is Y1, the relationship X1 < Y1
is established.
[0189] Here, when the entire cooling time (the sum of the time for performing the ice-making
compartment cooling operation and the time for performing the ice-making operation)
in the general ice-making mode and the entire cooling time in the carbonated ice-making
mode are the same, an ice-making time X2 in the general ice-making mode and an ice-making
time Y2 in the carbonated ice-making mode may satisfy the relationship X2 > Y2 in
reverse. Another method of making high-concentration carbonated ice includes a method
of increasing an ice-making speed in an ice-making operation. This is because, as
the ice-making speed is increased, a loss of CO
2 may be prevented as much as the ice-making speed.
[0190] As illustrated in FIGS. 43 and 44, when the ice-making speed in the ice-making operation
in the general ice-making mode is V1 and the ice-making speed in the ice-making operation
in the carbonated ice-making mode is V2, the relationship V1 < V2 may be established.
In this way, in an inverter compressor that is capable of adjusting rotation speed
to increase the ice-making speed in the carbonated ice-making mode, the rotation speed
of the compressor may be increased. In one example, when revolutions per minute (RPM)
of the compressor in the general ice-making mode is 2450 RPM of the compressor in
the carbonated ice-making mode may be increased to 2950 RPM. In order to increase
the ice-making speed, the rotation speed of the blower fan 97 of the ice-making compartment
81 may also be properly adjusted.
[0191] Still another method of making high-concentration carbonated ice may include a method
of increasing concentration of carbonated water substantially. That is, when a mode
in which only carbonated water is made for the purpose of supplying carbonated water
to the dispenser 90, is referred to as a carbonated water mode and a mode in which
carbonated ice is made, is referred to as a carbonated ice mode, a larger amount of
CO
2 in the carbonated ice mode than in the carbonated water mode may be injected into
the mixing tank 110.
[0192] Since CO
2 is injected into the mixing tank 110 at regular intervals with a predetermined number
of times, an injection interval may be reduced, or the number of times of injection
may be increased so that the amount of injection may be increased.