PUMP CAVITY STRUCTURE, ELECTRIC CONTROL ASSEMBLY, CIRCULATING PUMP, AND AIR CONDITIONER

Abstract

 The present application discloses a pump cavity structure, an electric control assembly, a circulating pump, and an air conditioner. The pump cavity structure (100) comprises a pump head (110), an impeller (120), a shielding cover (130), a rotor (140), and a stator (150). The pump head (110) is provided with a first cavity (111); the first cavity (111) is provided with an open end (112); the impeller (120) is rotatably mounted in the first cavity (111); the shielding cover (130) covers the open end (112); the rotor (140) is rotatably mounted in the shielding cover (130) and is connected to the impeller (120); the stator (150) is provided outside the shielding cover (130) and is provided around the outer side of the rotor (140); a sealing member (160) provided around the periphery of the open end (112) is mounted on the pump head (110); the shielding cover (130) is provided with an outer edge portion (131); and the stator (150) is connected to the pump head (110) and abuts against the outer edge portion (131), so that the outer edge portion (131) presses the sealing member (160).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the priority to Chinese Patent Application No. 202211405606.4, filed on November 10, 2022 and entitled "Pump Cavity Structure, Circulating pump, and Air Conditioner," and Chinese Patent Application No. 202211405627.6, filed on November 10, 2022 and entitled "Electric Control Assembly, Circulating pump, and Air Conditioner," the contents of both of which are incorporated herein by reference in entirety.

FIELD

[0002] The present disclosure relates to the field of circulating pumps, and in particular, to a pump cavity structure, an electric control assembly, a circulating pump, and an air conditioner.

BACKGROUND

[0003] In the related art, a Heating, Ventilation and Air Conditioning (HVAC) device is usually equipped with a circulating pump, which can circulate water in the air conditioning system, overcoming the resistance loss of the circulation loop, so as to meet the heating needs of customers. The circulating pump comprises a pump cavity structure composed of a pump head, a sealing ring, a shielding cover, a front cover, a stator assembly, etc. Traditional pump cavity structures have complex sealing structures, resulting in many assembly seams and low assembly efficiency.

SUMMARY

[0004] The present disclosure aims at solving at least one of the problems existing in the related art. To this end, the present disclosure proposes a pump cavity structure.

[0005] The present disclosure further provides a circulating pump with the pump cavity structure, and an air conditioner.

[0006] In accordance with an aspect of the present disclosure, an embodiment provides a pump cavity structure, comprises:

a pump head, having a first cavity, where the first cavity is provided with an open end;

an impeller, rotatably installed in the first cavity;

a shielding cover, covering the open end;

a rotor, rotatably installed in the shielding cover and connected to the impeller; and

a stator, arranged outside the shielding cover and wound around an outer side of the rotor;

where the pump head comprises a sealing member arranged around an outer periphery of the open end, the shielding cover has an outer edge portion corresponding to the sealing member, and the stator is connected to the pump head and abuts against the outer edge portion, such that the outer edge portion presses against the sealing member.

[0007] According to some embodiments of the present disclosure, the outer periphery of the open end is provided with a first step, and the sealing member is installed on the first step.

[0008] According to some embodiments of the present disclosure, an outer periphery of the first step is provided with a second step, and the stator has a protrusion used for abutting against the second step.

[0009] According to some embodiments of the present disclosure, the shielding cover is connected to a front cover, a second cavity is surrounded and formed by the front cover and the shielding cover, the rotor comprises a rotating shaft and a magnetic ring fixed on the rotating shaft, the magnetic ring is located in the second cavity, and the rotating shaft extends out of the second cavity and is connected to the impeller.

[0010] According to some embodiments of the present disclosure, a first bearing and a second bearing for supporting the rotating shaft are respectively arranged at two ends of the second cavity in an axial direction, the first bearing is provided with a first through hole penetrating axially therethrough, the second bearing is provided with a second through hole penetrating axially therethrough, the rotating shaft is provided with an axial perforation, and the front cover is provided with an opening communicated with the first cavity.

[0011] According to some embodiments of the present disclosure, the first bearing is mounted on the shielding cover, and the second bearing is mounted on the front cover.

[0012] According to some embodiments of the present disclosure, an end of the rotating shaft is provided with a flat section, and the impeller is provided with a flat hole to be inserted by the flat section.

[0013] According to some embodiments of the present disclosure, an outer wall of the flat section is provided with a limiting groove, and an inner wall of the flat hole is provided with a limiting rib matching the positioning groove.

[0014] According to some embodiments of the present disclosure, the magnetic ring and the rotating shaft are integrally molded by an injection molding.

[0015] According to some embodiments of the present disclosure, the stator is a plastic over-molded stator.

[0016] In accordance with another aspect of the present disclosure, an embodiment provides a circulating pump, comprising the pump cavity structure of the above embodiments of the present disclosure.

[0017] In accordance with another aspect of the present disclosure, an embodiment provides an electric control assembly, comprising:

a box body;

a box cover, mounted at an end of the box body, where a mounting cavity being surrounded and formed by the box cover and the box body; and

an electric control board, arranged in the mounting cavity;

where the box body is provided with a first conductive insert, a second conductive insert and a third conductive insert, which are integrally formed with the box body, the first conductive insert is configured to connect the electric control board with an external power line, the second conductive insert is configured to connect the electric control board with a motor, and the third conductive insert is configured to connect the electric control board with an external electric control signal line.

[0018] According to some embodiments of the present disclosure, the first conductive insert and the third conductive insert are fixed to a side wall of the box body.

[0019] According to some embodiments of the present disclosure, the second conductive insert is fixed to a bottom wall of the box body.

[0020] According to some embodiments of the present disclosure, an outer wall of the box body is provided with a buckle, the box cover is provided with a catch hole, and the buckle is capable of being clamped in the catch hole to connect the box cover to the box body.

[0021] According to some embodiments of the present disclosure, a plurality of buckles are provided, and the plurality of buckles are circumferentially distributed at an interval on a peripheral wall of the box body.

[0022] According to some embodiments of the present disclosure, the box cover is provided with a connecting hole, the box body is provided with a matching hole, and the box cover is connected to the box body by a connecting member passing through the connecting hole and the matching hole.

[0023] According to some embodiments of the present disclosure, the box body is provided with a hollow column, the hollow column is provided with an avoidance channel corresponding to the rotating shaft of the motor, and the box cover is provided with an avoidance hole corresponding to the avoidance channel.

[0024] According to some embodiments of the present disclosure, a plurality of matching holes are provided around an outer periphery of the hollow column.

[0025] According to some embodiments of the present disclosure, the electric control assembly further comprises a heat sink connected to the box cover.

[0026] According to some embodiments of the present disclosure, the heat sink and the box cover are integrally formed.

[0027] According to some embodiments of the present disclosure, an upper end of the side wall of the mounting cavity is provided with a step, and an outer edge of the electric control board overlaps the step.

[0028] In accordance with another aspect of the present disclosure, an embodiment provides a circulating pump, comprising a motor, a pump head and an electric control assembly of the above embodiments of the present disclosure, where the pump head and the electric control assembly are respectively connected to two ends of the motor in the axial direction.

[0029] According to some embodiments of the present disclosure, the outer wall of the box body is provided with a positioning column, and an outer wall of the motor is provided with a positioning groove matching the positioning column.

[0030] An air conditioner according to an embodiment of the present disclosure comprises the circulating pump of the above embodiments of the present disclosure.

[0031] Additional aspects and advantages of the present disclosure will be set forth in the description which follows, or be obvious from the description which follows, or can be learned by practice of the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

[0032] 

FIG. 1 is a schematic sectional view of a pump cavity structure according to some embodiments of the present disclosure;

FIG. 2 is an enlarged view of part A in FIG. 1;

FIG. 3 is an enlarged view of part B in FIG. 1;

FIG. 4 is a schematic diagram of a communication loop of the pump cavity structure according to some embodiments of the present disclosure;

FIG. 5 is a schematic sectional view of a pump head according to some embodiments of the present disclosure;

FIG. 6 is a schematic sectional view of an impeller according to some embodiments of the present disclosure;

FIG. 7 is a schematic sectional view of a rotor according to some embodiments of the present disclosure;

FIG. 8 is a schematic perspective view of a circulating pump according to some embodiments of the present disclosure;

FIG. 9 is a schematic perspective view of an electric control assembly according to some embodiments of the present disclosure;

FIG. 10 is a schematic sectional view of the electric control assembly according to some embodiments of the present disclosure;

FIG. 11 is a schematic structural diagram of a box body according to some embodiments of the present disclosure;

FIG. 12 is a schematic structural diagram of a box cover according to some embodiments of the present disclosure; and

FIG. 13 is a schematic sectional view of a circulating pump according to some embodiments of the present disclosure.

[0033] Reference numerals as followings:

pump cavity structure 100; pump head 110; first cavity 111; open end 112; first step 113; second step 114; water inlet 115; water outlet 116; impeller 120; flat hole 121; limiting rib 122; shielding cover 130; outer edge portion 131; sealing bolt 132; rotor 140; rotating shaft 141; magnetic ring 142; flat section 143; limiting groove 144; perforation 145; stator 150; protrusion 151; connecting member 152; sealing member 160; front cover 170; second cavity 171; first bearing 180; first through hole 181; second bearing 190; second through hole 191;

electric control assembly 200; box cover 210; catch hole 211; connecting hole 212; avoidance hole 213; heat sink 214; box body 220; first conductive insert 221; second conductive insert 222; buckle 223; matching hole 224; avoidance channel 225; positioning column 226; step 227; third conductive insert 228; electric control board 230; wire harness 240; connecting member 250;

motor 300; rotating shaft 310; sealing bolt 320; positioning groove 330; and

pump body 400.

DETAILED DESCRIPTION OF EMBODIMENTS

[0034] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings in which the same or like reference numerals refer to the same or like elements or elements having the same or like functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are intended for illustrating only and are not to be construed as limiting the present disclosure.

[0035] In the description of the present disclosure, it should be understood that for the description of orientations, the orientation or positional relationships indicated by the terms such as "on," "below," "front," "rear," "left," or "right," etc., are based on orientation or positional relationships shown in the accompanying drawings, and are used only for ease and brevity of illustration and description, rather than indicating or implying that the mentioned apparatus or element must have a particular orientation or must be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limiting of the present disclosure.

[0036] In the description of the present disclosure, the term "at least one" means one or more, the term "a plurality of" means at least two, the term such as "greater than," "less than," "exceed" or variants thereof prior to a number or series of numbers is understood to exclude the number. The term "at least" prior to a number or series of numbers is understood to comprise the number. If the terms such as "first," or "second," etc., are used, it is understood that they are for distinguishing features, and are not intended to indicate or imply relative importance, or implicitly point out the number of the indicated features, or implicitly point out the order of the indicated features.

[0037] In the description of the present disclosure, unless otherwise explicitly defined, the terms such as "configure," "install/mount," "connect," "assemble," or "match," etc., should be understood in a broad sense, and those having ordinary skills in the art can reasonably determine the specific meanings of the above terms in the present disclosure based on the specific contents of the technical scheme.

[0038] In the related art, an HVAC device is usually equipped with a circulating pump, which can circulate water in the air conditioning system, overcoming the resistance loss of the circulation loop, so as to meet the heating needs of customers. The circulating pump comprises a pump cavity structure composed of a pump head, a sealing ring, a shielding cover, a front cover, a stator assembly, etc. Traditional pump cavity structures have complex sealing structures, resulting in many assembly joints and low assembly efficiency.

[0039] In order to solve at least one of the problems mentioned above, the present disclosure proposes a pump cavity structure, which has a simple sealing structure and higher assembly efficiency.

[0040] Referring to FIGs. 1 to 2, a pump cavity structure 100 provided by an embodiment of the present disclosure comprises a pump head 110, an impeller 120, a shielding cover 130, a rotor 140, and a stator 150. A first cavity 111 is formed inside the pump head 110, and the first cavity 111 is provided with an open end 112. An outer wall of the pump head 110 is further provided with a water inlet 115 and a water outlet 116. The water inlet 115 is communicated with the first cavity 111 at one end in an axial direction, and the water outlet 116 is communicated with the first cavity 111 at one end in a radial direction. The impeller 120 is mounted in the first cavity 111 and can rotate in the first cavity 111. When the impeller 120 rotates, it can drive water or other liquid to be transported into the first cavity 111 through the water inlet 115, and then discharge it out of the first cavity 111 from the water outlet 116. The shielding cover 130 covers an outer side of the open end 112. The rotor 140 is rotatably mounted inside the shielding cover 130, and is connected to the impeller 120, so that the impeller 120 can be driven to rotate when the rotor 140 rotates. The stator 150 is fixedly arranged outside the shielding cover 130, and is around an outer side of the rotor 140. The pump head 110 is provided with a sealing member 160 arranged around an outer periphery of the open end 112, and the sealing member 160 is of a ring shape. An outer edge portion 131 extending radially outward is disposed at one end of the shielding cover 130 facing the pump head 110, and a position of the outer edge portion 131 corresponds to the sealing member 160. During installation, the stator 150 is connected to the pump head 110 through a connecting member 152 such as a bolt, and in this case, the end of the stator 150 abuts against an end of the outer edge portion 131 facing away from the sealing member 160, so that the outer edge portion 131 can be pressed against the sealing member 160, and a sealed connection between the pump head 110 and the stator 150 is achieved. Specifically, the sealing member 160 may be made of an elastic material such as silica gel or rubber, and can deform when being pressed, so as to fit tightly between the outer edge portion 131 and the pump head 110, thereby preventing liquid entering the stator 150 from the open end 112. A plurality of connecting members 152 may be provided, and the plurality of connecting members 152 are distributed at intervals along a circumferential direction of the stator 150, such that the sealing member 160 is uniformly stressed, which is beneficial to improving the sealing effect of the sealing member 160.

[0041] Referring to FIG. 2, in the pump cavity structure 100, a sealing member 160 is mounted around an outer periphery of the open end 112, and the stator 150 abuts against the outer edge portion 131 of the shielding cover 130 when connected to the pump head 110, such that the outer edge portion 131 can be pressed against the sealing member 160, to achieve a sealed connection between the pump head 110 and the stator 150. In this way, the liquid in the first cavity 111 can be prevented from entering the stator 150 and causing damage to the stator 150. The pump cavity structure 100 can achieve the sealing between the pump head 110 and the stator 150 with only one sealing member 160, so that the sealing structure is simple, which is conducive to reducing the risk of sealing failure. In addition, the total number of parts is less, which is conducive to reducing the difficulty of assembly and improving the assembly efficiency. At the same time, the cost of production can be reduced to improve the competitiveness of the pump product.

[0042] Referring to FIGs. 2 and 5, it should be noted that in order to enable the sealing member 160 to be stably mounted on the pump head 110, in some embodiments of the present disclosure, the outer periphery of the open end 112 is provided with a first step 113, so that the sealing member 160 can be mounted on the first step 113. Specifically, the first step 113 sinks relative to an end face of the pump head 110, and when the sealing member 160 is mounted on the first step 113, it can be limited by a side wall of the first step 113, thereby preventing the sealing member 160 from shaking on the pump head 110 and improving the installation stability of the sealing member 160. In addition, when the sealing member 160 is installed on the first step 113, the outer edge portion 131 of the shielding cover 130 is pressed against the sealing member 160 at an end away from the pump head 110, such that the sealing member 160 is pressed and deformed to attach the side wall of the first step 113 under pressure, thereby increasing the contact area between the sealing member 160 and the pump head 110, which is beneficial to improving the sealing effect between the pump head 110 and the stator 150.

[0043] Referring to FIGs. 2 and 5, it can be understood that in order to prevent the stator 150 from shaking when installed on the pump head 110, in some embodiments of the present disclosure, an outer periphery of the first step 113 is further provided with a second step 114, and the stator 150 is provided with a protrusion 151 abutting against the second step 114. Specifically, the second step 114 sinks relative to the end face of the pump head 110 and has a height difference with the first step 113. During installation, the protrusion 151 abuts against the second step 114, and a side wall of the second step 114 can limit the protrusion 151, thus preventing the stator 150 from shaking. Moreover, during installation, an outer side wall of the sealing member 160 can abut against an outer side wall of the protrusion 151, so that a contact area between the sealing member 160 and the stator 150 can be further increased, which is beneficial to improving the sealing effect of the sealing member 160.

[0044] Referring to FIGs. 1 and 4, it should be noted that in order to facilitate the installation of the stator 150, in some embodiments of the present disclosure, the shielding cover 130 is connected to a front cover 170, and a second cavity 171 is surrounded and formed by the front cover 170 and the shielding cover 130. The rotor 140 comprises a rotating shaft 141 and a magnetic ring 142 fixed to the rotating shaft 141. The magnetic ring 142 is located in the second cavity 171, and the rotating shaft 141 extends out of the second cavity 171 and is connected to the impeller 120. There is a gap between an outer wall of the magnetic ring 142 and an inner wall of the second cavity 171, so the magnetic ring 142 can rotate smoothly in the second cavity 171, thereby driving the rotating shaft 141 to rotate.

[0045] Referring to FIG. 4, it should be noted that in order to enable the rotating shaft 141 obtain a rotational support when it rotates, in some embodiments of the present disclosure, a first bearing 180 and a second bearing 190 are respectively arranged at two ends of the second cavity 171 in an axial direction. The first bearing 180 and the second bearing 190 are respectively sleeved at two ends of the rotating shaft 141, and are located at two sides of the magnetic ring 142 in the axial direction. The rotating shaft 141 can stably rotate through the first bearing 180 and the second bearing 190.

[0046] Referring to FIG. 4, in order to reduce the friction between the rotating shaft 141, the first bearing 180 and the second bearing 190, in some embodiments of the present disclosure, the first bearing 180 is provided with a first through hole 181 extending axially therethrough, the second bearing 190 is provided with a second through hole 191 extending axially therethrough, and the rotating shaft 141 is provided with an axial perforation 145. The front cover 170 is provided with an opening communicating with the first cavity 111, so that a liquid communication loop is formed between the first cavity 111 and the second cavity 171. When the rotating shaft 141 drives the impeller 120 to rotate, part of the liquid in the first cavity 111 enters one end of the second cavity 171 through the perforation 145 of the rotating shaft 141, then enters the other end of the second cavity 171 through the first through hole 181 and the second through hole 191, and finally flows back to the first cavity 111 through the opening of the front cover 170. When the liquid circulates in the communication loop, it is conducive to forming a water film between the contact surfaces of the rotating shaft 141 and the first bearing 180, and/or the contact surfaces between the contact surfaces of the rotating shaft 141 and the second bearing 190, thereby reducing the friction between the rotating shaft 141 and the first bearing 180 and/or between the rotating shaft 141 and the second bearing 190.Threrefore, the friction loss can be reduced. At the same time, when the liquid flows, it can take away heat, thereby reducing the temperature rise caused by friction and improving the service life of the pump cavity structure 100.

[0047] In an embodiment, a plurality of first through holes 181 may be provided, and the plurality of first through holes 181 are distributed at intervals along a circumferential direction of the first bearing 180, which is conducive to improving the smoothness of liquid circulation between the first cavity 111 and the second cavity 171. In another embodiment, a plurality of second through holes 191 may also be provided, and the plurality of second through holes 191 are distributed at intervals along a circumferential direction of the second bearing 190, which facilitates the flow of liquid between the first cavity 111 and the second cavity 171.

[0048] Referring to FIG. 4, it can be understood that in order to stably mount the first bearing 180 and the second bearing 190, in some embodiments of the present disclosure, the first bearing 180 is mounted on the shielding cover 130 and the second bearing 190 is mounted on the front cover 170. As such, the second through hole 191 can be communicated with the first cavity 111 through the opening of the front cover 170. Specifically, one end of the shielding cover 130 away from the pump head 110 is concave to form a first installation position, and the first bearing 180 is fixed at the first installation. A second installation is concavely formed at one end of the front cover 170 near the pump head 110, and the second bearing 190 is fixed at the second installation, such that both the first bearing 180 and the second bearing 190 can be stably mounted.

[0049] Referring to FIG. 4, it should be noted that in order to facilitate maintenance the rotor 140, a through hole may be formed in the shielding cover 130 facing the end of the rotating shaft 141. A sealing bolt 132 is mounted in the through hole, such that liquid can be prevented from flowing out of the through hole. When the rotor 140 is stuck and needs maintenance, the sealing bolt 132 can be removed, and then a tool can access the second cavity 171 from the through hole, to drive the rotating shaft 141 to rotate, thus solving the problem of the rotor 140 being stuck. With the above arrangements, it is possible to avoid disassembling other components, thus improving the convenience of maintenance.

[0050] Referring to FIGs. 3, 6 and 7, it can be understood that in order to facilitate the installation of the impeller 120 on the rotating shaft 141, in some embodiments of the present disclosure, one end of the rotating shaft 141 is provided with a flat section 143, which has a radial thickness smaller than a thickness of a main body of the rotating shaft 141, and the impeller 120 is provided with a flat hole 121 for inserting the flat section 143. During installation, the flat hole 121 of the impeller 120 is aligned with the flat section 143 of the rotating shaft 141, and then the impeller 120 is sleeved on the rotating shaft 141, such that the flat section 143 is inserted into the flat hole 121. The flat section 143 can circumferentially limit the impeller 120, so that the impeller 120 is stably mounted on the rotating shaft 141.

[0051] Referring to FIG. 3, it should be noted that in order to further limit the impeller 120 and prevent the impeller 120 from moving along the axial direction, in some embodiments of the present disclosure, an outer wall of the flat section 143 is further provided with a limiting groove 144, an inner wall of the flat hole 121 is provided with a limiting rib 122 matching the positioning groove, and the limiting rib 122 is elastic. When the flat section 143 of the rotating shaft 141 is inserted into the flat hole 121 of the impeller 120, the limiting rib 122 is engaged and clamped in the limiting groove 144, thereby preventing the impeller 120 from moving along the axial direction and improving the stability of the impeller 120 mounted on the rotating shaft 141. Specifically, the limiting groove 144 is of a ring shape, and the limiting rib 122 may also be ring-shaped, such that the limiting effect can be improved.

[0052] Referring to FIG. 7, it should be noted that in some embodiments of the present disclosure, in order to further reduce the number of parts and reduce the assembly complexity, when manufacturing the rotor 140, the rotating shaft 141 and the magnetic ring 142 are integrally injection molded through a plastic coating process, such that the structure of the rotor 140 is simple and the assembly efficiency is high.

[0053] In the related art, a stator assembly of the traditional pump cavity structure is assembled in a housing, a shielding cover is provided in a middle part of the stator assembly, a rotor is mounted in an inner cavity of the shielding cover, and a water drainage groove is arranged between the housing and the shielding cover, such that condensed water or water vapor is prevented from entering and accumulating in a conductive part of the stator. To this end, in some embodiments of the present disclosure, the stator 150 is a plastic over-molded stator which has better waterproof performance, such that the risk of a conductive part of the stator 150 being immersed in water is reduced, and there is no need to configure a water drainage structure, thus reducing the manufacturing cost, further reducing the number of parts and improving the assembly efficiency.

[0054] As the circulating pump adopts the pump cavity structure 100 described above, by mounting the sealing member 160 around the outer periphery of the open end 112, the stator 150 can abut against the outer edge portion 131 of the shielding cover 130 when the stator 150 is connected to the pump head 110, such that the outer edge portion 131 can tightly press against the sealing member 160, to achieve a sealed connection between the pump head 110 and the stator 150, thus preventing liquid in the first cavity 111 from entering the stator 150 and causing damage to the stator 150. The pump cavity structure 100 can seal the pump head 110 and the stator 150 with only one sealing member 160, and the sealing structure is simple, which is conducive to reducing the risk of sealing failure, and the number of parts is less, which is conducive to reducing the assembly difficulty and improving the assembly efficiency. At the same time, it is beneficial to reducing the cost of production and improving the competitiveness of products.

[0055] An air conditioner according to an embodiment of the present disclosure comprises the above-mentioned circulating pump. The air conditioner may be an HVAC device or other types of air conditioners capable of achieving HVAC functionality. The circulating pump can circulate water or other liquids in the air conditioning system, overcoming the resistance loss of the circulation loop, so as to meet the heating needs of customers.

[0056] As the air conditioner adopts the circulating pump, the pump cavity structure 100 of the circulating pump is provided with the sealing member 160 around the outer periphery of the open end 112, and the stator 150 can abut against the outer edge portion 131 of the shielding cover 130 when connected to the pump head 110, such that the outer edge portion 131 can tightly press against the sealing member 160, to achieve a sealed connection between the pump head 110 and the stator 150, preventing the liquid in the first cavity 111 from entering the stator 150 and causing damage to the stator 150. The pump cavity structure 100 can seal the pump head 110 and the stator 150 with only one sealing member 160, and the sealing structure is simple, which is conducive to reducing the risk of sealing failure, and the number of parts is less, which is conducive to reducing the difficulty and improving the assembly efficiency, reducing the cost of production and improving the competitiveness of products.

[0057] Referring to FIGs. 9 to 11, an embodiment of the present disclosure provides an electric control assembly 100, which is applied to a circulating pump. The electric control assembly 100 comprises a box body 120, a box cover 110, and an electric control board 130. The box cover 110 is mounted at one end of the box body 120 and a mounting cavity is formed and surrounded by the box cover and the box body 120. The electric control board 130 is arranged in the mounting cavity. The box body 120 is provided with a first conductive insert 121, a second conductive insert 122 and a third conductive insert 128. The first conductive insert 121, the second conductive insert 122, the third conductive insert 128 are integrally formed with the box body 120. The first conductive insert 121 is configured to connect the electric control board 130 to an external power line, the second conductive insert 122 is configured to connect the electric control board 130 to the motor 200, and the third conductive insert 128 is configured to connect the electric control board 130 to an external electric control signal line. In an embodiment, the box body 120 is made of plastic, and a conductive part of the first conductive insert 121 is a metal sheet. During processing, the metal sheet can be fixed by a mold, and then plastic is injected on the outer periphery of the metal sheet, so that the first conductive insert 121 and the box body 120 can be integrally formed. Similarly, conductive parts of the second conductive insert 122 and the third conductive insert 128 are also metal sheets. During processing, the metal sheets can also be fixed by a mold, and then plastic is injected on the outer periphery of the metal sheets, so that the second conductive insert 122, the third conductive insert 128 and the box body 120 can be integrally formed. Since a current flowing through the third conductive insert 128 is much smaller than a current flowing through the first conductive insert 121, the third conductive insert 128 can be made to have a smaller cross-sectional area than the first conductive insert 121, thereby reducing the material cost. It should be noted that when the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 are fixed by the mold, since the mold has a higher positioning accuracy, the positioning accuracy of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 can be higher, which is beneficial to improving the wiring efficiency.

[0058] Referring to FIG. 11, by integrally forming the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 with the box 120, the number of parts of the electric control assembly 100, the assembly process, the assembly difficulty and the manufacturing cost can be reduced, and the assembly efficiency can be improved. Moreover, since the first conductive insert 121, the second conductive insert 122, the third conductive insert 128 are integrally formed with the box body 120, the connection among the first conductive insert 121, the second conductive insert 122, the third conductive insert 128 and the box body 120 is more reliable, which is beneficial to improving the reliability of the conductive connection of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128. At the same time, waterproof and dustproof properties of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 can be improved, and the reliability of the electric control assembly 100 can be further improved.

[0059] Referring to FIGs. 11 and 13, it can be understood that the electric control assembly 100 is usually provided with a wire harness 140 for connecting to the external power line. The wire harness 140 is arranged on an outer wall of the box body 120 and is connected to the first conductive insert 121, and the motor 200 is usually mounted on one side of the box body 120 in the axial direction. The external electric control signal line is adjacent to a side wall of the box body. Therefore, in order to facilitate the connection of the first conductive insert 121 to the wire harness 140, the connection of the second conductive insert 122 to the motor 200 and the connection of the third conductive insert 128 to the external electric control signal line, in some embodiments of the application, the first conductive insert 121 and the third conductive insert 128 are fixedly arranged on the side wall of the box body 120, and the second conductive insert 122 is fixedly arranged on a bottom wall of the box body 120, such that a distance between the first conductive insert 121 and the wire harness 140 is shorter and the connection is more convenient, and a distance between the second conductive insert 122 and the motor 200 is shorter and the connection is more convenient. Specifically, the first conductive insert 121 and the wire harness 140 may be connected in a plug-in manner. The second conductive insert 122 and the third conductive insert 128 may also be connected to corresponding components in a plug-in manner, which is convenient for connection operation.

[0060] Referring to FIG. 9, it can be understood that in order to quickly install the box cover 110 on the box body 120, in some embodiments of the present disclosure, the outer wall of the box body 120 is provided with an elastic buckle 123, and the box cover 110 is correspondingly provided with a catch hole 111. During installation, the buckle 123 is clamped and engaged in the catch hole 111, to connect the box cover 110 to the box body 120, so that the mounting is quick and convenient.

[0061] Referring to FIGs. 11 and 12, it should be noted that in the above embodiments, a plurality of buckles 123 may be provided, and correspondingly a plurality of catch holes 111 are provided. The plurality of buckles 123 are circumferentially distributed at intervals on a peripheral wall of the box body 120, so that the connecting force distribution between the box cover 110 and the box body 120 is more uniform, and the connection is more stable and reliable. Specifically, the box cover 110 has a substantially square structure, and each side of the box cover 110 is provided with a catch hole 111. Correspondingly, the box body 120 has four buckles 123. During mounting, each buckle 123 is clamped and engaged in the corresponding catch hole 111, to firmly connect the box cover 110 to the box body 120.

[0062] Referring to FIGs. 9 to 11, it can be understood that in order to further improve the connection reliability between the box cover 110 and the box body 120, in some embodiments of the present disclosure, the box cover 110 may also be provided with a connecting hole 112, and the box body 120 is provided with a matching hole 124. The box cover 110 can be connected to the box body 120 by a connecting member 150 such as a bolt passing through the connecting hole 112 and the matching hole 124, so that the reliability of the connection between the box body 120 and the box cover 110 can be further improved. Specifically, the connecting hole 112 may be a countersunk hole, so that the bolt can be prevented from protruding out of the box cover 110, and foreign objects can be prevented from accessing the bolt to affect the reliability of the connection.

[0063] Referring to FIGs. 10 and 13, it should be noted that in some embodiments of the present disclosure, the box body 120 is connected to the end of the motor 200. In order to enable rapid maintenance of rotating shaft 210 of the motor 200 when the rotating shaft 210 is stuck, the box body 120 of the present disclosure is provided with an avoidance channel 125 corresponding to the rotating shaft 210 of the motor 200, and the box cover 110 is provided with an avoidance hole 113 corresponding to the avoidance channel 125. When the rotor needs to be maintained, the sealing bolt 220 in the motor 200 housing corresponding to the rotating shaft 210 can be removed, so that maintenance personnel can place a tool into the housing of the motor 200 through the avoidance hole 113 and the avoidance channel 125 to perform maintenance on the motor 200. For example, the rotating shaft 210 can be rotated by a screwdriver to solve the problem of the rotating shaft 210 being stuck, or the sealing bolt 220 can be removed by a screwdriver to achieve water drainage or gas exhaust in the motor 200. Through the above arrangements, when the motor 200 needs to be maintained, the electric control box does not need to be removed from the motor 200, thus improving the convenience and rapidity of maintenance.

[0064] Referring to FIG. 12, in the above embodiments, a plurality of connecting holes 112 may be provided, and the plurality of connecting holes 112 are arranged at intervals around an outer periphery of the avoidance hole 113, and a plurality of matching holes 124 may be correspondingly provided, to further improve the reliability of connection between the box body 120 and the box cover 110.

[0065] Referring to FIG. 12, it can be understood that the electric control assembly 100 will generate more heat during operation. In order to improve the heat dissipation effect of the electric control assembly 100, in some embodiments of the present disclosure, the electric control assembly 100 further comprises a heat sink 114 made of metal sheets, such as aluminum sheets or copper sheets, which has desirable heat conduction performance and large surface area. Therefore, the heat absorbed from an electric component can be dissipated by heat exchange with air, which is beneficial to improving the heat dissipation effect of the electric components, reducing the temperature of the electronic components, and prolonging the service life of the electronic component. Specifically, the heat sink 114 is connected to an inner wall of the box cover 110, such that a distance between the heat sink 114 and the electric control board 130 is shorter, and the heat of electric components on the electric control board 130 can be better absorbed.

[0066] Referring to FIG. 12, it can be understood that in order to stably mount the heat sink 114 on the box cover 110, in some embodiments of the present disclosure, the heat sink 114 and the box cover 110 are integrally formed. Specifically, the box cover 110 is made of plastic. During manufacturing, the heat sink 114 is fixed by a mold, and then plastic is injected into an outer periphery of the heat sink 114, so that the heat sink 114 and the box cover 110 can be integrally formed.

[0067] Referring to FIG. 8, it should be noted that in some embodiments of the present disclosure, the motor 200 is mounted at one end of the box body 120. In order to facilitate the installation, the outer wall of the box body 120 is provided with a positioning column 126 for positioning the motor 200. Specifically, an outer wall of the motor 200 is provided with a positioning groove 230 matching the positioning column 126. When assembling the electric control assembly 100 and the motor 200, the positioning column 126 can extend into the positioning groove 230, achieving assembly guidance and misalignment prevention, which is beneficial to improving the convenience of mounting.

[0068] Referring to FIGs. 10 and 11, it can be understood that in order to stably mount the electric control board 130 in the mounting cavity, in some embodiments of the present disclosure, an upper end of the side wall of the box body 120 is provided with a step 127, which sinks relative to an outer edge of the side wall of the box body 120. When installing the electric control board 130, a lower end of an outer edge of the electric control board 130 overlaps the step 127, such that the step 127 can support the electric control board 130. The step 127 may be arranged along a circumferential direction of the box body 120, such that the step 127 may have a longer length, which can better support the electric control board 130 and further improve the mounting stability of the electric control board 130. When the box cover 110 is mounted to the box body 120, a lower edge of the box cover 110 can abut against an upper end of the outer edge of the electric control board 130, such that the box cover 110 can further limit the electric control board 130, prevent the electric control board 130 from shaking, and further improve the mounting stability of the electric control board 130.

[0069] Referring to FIGs. 10 and 11, it should be noted that the box body 120 is provided with a hollow column, an avoidance channel 125 is formed inside the hollow column, and a plurality of matching holes 124 are formed around an outer periphery of the hollow column. A central part of the electric control board 130 is a through hole, and the hollow column passes through the central part of the electric control board 130. The hollow column can limit the movement of the electric control board 130 in a radial direction of the hollow column, which is beneficial to further improving the mounting stability of the electric control board 130 and preventing the electric control board 130 from shaking in the mounting cavity.

[0070] Referring to FIGs. 8 and 13, a circulating pump according to an embodiment of the present disclosure comprises a pump body300 , a motor 200 and an electric control assembly 100 according to the embodiment of the first aspect of the present disclosure. The pump body 300 and the electric control assembly 100 are respectively mounted at two ends of the motor 200 in the axial direction, which is conducive to reducing the radial size of the circulating pump. The electric control assembly 100 can control the rotation of the motor 200, and the rotation of the motor 200 can drive the impeller of the pump body 300 to rotate, thus driving the liquid to continuously circulate in the circulation system.

[0071] As the circulating pump adopts the above-mentioned electric control assembly 100, in which the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 are integrally formed with the box body 120, the number of parts of the electric control assembly 100 can be reduced, the assembly difficulty can be reduced, the assembly efficiency can be improved, and the manufacturing cost can be reduced. Moreover, the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 being integrally formed with the box body 120 is beneficial to improving the reliability of the conductive connections of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128. At the same time, the waterproof and dustproof properties of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 can be improved, and the reliability of the electric control assembly 100 can be further improved.

[0072] An air conditioner according to an embodiment of the present disclosure comprises the above-mentioned circulating pump, which may be an HVAC device or other types of air conditioners capable of achieving HVAC functionality. The circulating pump can circulate water or other liquids in the air conditioning system, overcoming the resistance loss of the circulation loop, so as to meet the heating needs of customers.

[0073] The circulating pump adopts the above-mentioned electric control assembly 100, in which the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 are integrally formed with the box body 120, so that the number of parts of the electric control assembly 100 can be reduced, the assembly difficulty can be reduced, the assembly efficiency can be improved, and the manufacturing cost can be reduced. Moreover, the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128 being integrally formed with the box body 120is beneficial to improving the reliability of the conductive connection of the first conductive insert 121, the second conductive insert 122 and the third conductive insert 128.

[0074] The embodiments of the present disclosure have been described in detail in conjunction with the accompanying drawings. However, the present disclosure is not limited to the above embodiments, and those having ordinary skills in the art can make various modifications with the knowledge in the relevant technical field without departing from the scope of the present disclosure.

Claims

1. A pump cavity structure comprising:

a pump head, having a first cavity with an open end;

an impeller, rotatably mounted in the first cavity;

a shielding cover, covering the open end;

a rotor, rotatably mounted in the shielding cover and connected to the impeller; and

a stator, arranged outside the shielding cover and wound around an outer side of the rotor;

wherein:
the pump head comprises a sealing member arranged around an outer periphery of the open end, the shielding cover has an outer edge portion corresponding to the sealing member, and the stator is connected to the pump head and abuts against the outer edge portion, such that the outer edge portion is pressed against the sealing member.

2. The pump cavity structure of claim 1, wherein:
the outer periphery of the open end is provided with a first step, and the sealing member is mounted on the first step.

3. The pump cavity structure of claim 2, wherein an outer periphery of the first step is provided with a second step, and the stator is provided with a protrusion for abutting against the second step.

4. The pump cavity structure of any one of claims 1 to 3, wherein:
the shielding cover is connected to a front cover, a second cavity is surrounded and formed by the front cover and the shielding cover, the rotor comprises a rotating shaft and a magnetic ring fixed on the rotating shaft, the magnetic ring is located in the second cavity, and the rotating shaft extends out of the second cavity and is connected to the impeller.

5. The pump cavity structure of claim 4, wherein:a first bearing and a second bearing for supporting the rotating shaft are respectively arranged at two ends of the second cavity in an axial direction, a first through hole penetrates along an axial direction of the first bearing, a second through hole penetrates along an axial direction of the second bearing, the rotating shaft has an axial perforation, and the front cover has an opening communicating with the first cavity.

6. The pump cavity structure of claim 5, wherein the first bearing is mounted on the shielding cover, and the second bearing is mounted on the front cover.

7. The pump cavity structure of any one of claims 4 to 6, wherein:an end of the rotating shaft is provided with a flat section, and the impeller is provided with a flat hole to be inserted by the flat section.

8. The pump cavity structure of claim 7, wherein an outer wall of the flat section is provided with a limiting groove, and an inner wall of the flat hole is provided with a limiting rib matching the positioning groove.

9. The pump cavity structure of any one of claims 4 to 8, wherein the magnetic ring and the rotating shaft are integrally molded by an injection molding process.

10. The pump cavity structure of any one of claims 1 to 9, wherein the stator is a plastic over-molded stator.

11. A circulating pump, comprising a pump cavity structure of any one of claims 1 to 10.

12. An electric control assembly, comprising:

a box body;

a box cover, connected at an end of the box body and a mounting cavity being surrounded and formed by the box cover and the box body; and

an electric control board, arranged in the mounting cavity;

wherein:
the box body is provided with a first conductive insert, a second conductive insert and a third conductive insert, which are integrally formed with the box body, the first conductive insert is configured to connect the electric control board with an external power line, the second conductive insert is configured to connect the electric control board with a motor, and the third conductive insert is configured to connect the electric control board with an external electric control signal line.

13. The electric control assembly of claim 12, wherein:the first conductive insert and the third conductive insert are fixed to a side wall of the box body.

14. The electric control assembly of claim 12 or 13, wherein the second conductive insert is fixed to a bottom wall of the box body.

15. The electric control assembly of any one of claims 12 to 14, wherein:
an outer wall of the box body is provided with a buckle, the box cover is provided with a catch hole, and the buckle is clamped and engaged in the catch hole to connect the box cover to the box body.

16. The electric control assembly of claim 15, wherein the box body is provided with a plurality of buckles circumferentially distributed at an interval on a peripheral wall of the box body (220).

17. The electric control assembly of claim 15 or 16, wherein:the box cover is provided with a connecting hole, the box body is provided with a matching hole, and the box cover is capable of being connected to the box body by a connecting member passing through the connecting hole and the matching hole.

18. The electric control assembly of claim 17, wherein:
the box body is provided with a hollow column, the hollow column is provided with an avoidance channel corresponding to a rotating shaft of the motor, and the box cover is provided with an avoidance hole corresponding to the avoidance channel.

19. The electric control assembly of claim 18, wherein a plurality of matching holes are provided around an outer periphery of the hollow column.

20. The electric control assembly of any one of claims 12 to 19, further comprising a heat sink connected to the box cover.

21. The electric control assembly of claim 20, wherein the heat sink and the box cover are integrally formed.

22. The electric control assembly of any one of claims 12 to 21, wherein an upper end of a side wall of the mounting cavity is provided with a step, and an outer edge of the electric control board overlaps the step.

23. A circulating pump, comprising a motor, a pump head and an electric control assembly of any one of claims 12 to 22, wherein the pump head and the electric control assembly are respectively connected to two ends of the motor in an axial direction.

24. The circulating pump of claim 23, wherein an outer wall of a box body is provided with a positioning column, and an outer wall of the motor is provided with a positioning groove matching the positioning column.

25. An air conditioner, comprising a circulating pump of claim 11, 23 or 24.

Drawing