Dishwasher heat pump device

Abstract

The embodiment of the present application provides a kind of dishwasher heat pump device, dishwasher heat pump device includes three-way pipe, first check valve and second check valve.Three-way pipe includes first pipe body, second pipe body and third pipe body, second pipe body and third pipe body are connected with first pipe body, first refrigerant circulation loop includes second pipe body and first pipe body, second refrigerant circulation loop includes third pipe body and first pipe body.First check valve is communicated with the pipeline of second pipe body and the pipeline of first pipe body in one direction.Second check valve is communicated with the pipeline of third pipe body and the pipeline of first pipe body in one direction.The inner wall of second pipe body is provided with first limit part, first check valve is provided with second limit part, and first limit part and second limit part are concave-convex cooperation;The inner wall of third pipe body is provided with third limit part, second check valve is provided with fourth limit part, and third limit part and fourth limit part are concave-convex cooperation.Such dishwasher heat pump device reduces the risk of mutual influence of multiple refrigerant circulation loops.

Description

Technical Field

[0001] This application relates to the field of dishwasher technology, and more specifically, to a dishwasher heat pump device. Background Technology

[0002] The dishwasher heat pump unit can be set up with multiple refrigerant circulation loops to provide heat for the dishwasher's washing and drying modes.

[0003] In related technologies, dishwasher heat pump devices include a first refrigerant circulation loop for a washing mode and a second refrigerant circulation loop for a drying mode. The first and second refrigerant circulation loops can be connected to the same pipeline via a T-connector, and a compressor is installed on this pipeline. However, multiple refrigerant circulation loops connected via a T-connector experience pressure fluctuations and flow rate differences during operation, increasing the risk of mutual interference between the multiple refrigerant circulation loops. Utility Model Content

[0004] This application provides a dishwasher heat pump device that can reduce the risk of multiple refrigerant circulation loops interfering with each other.

[0005] This application provides a dishwasher heat pump device, which has a first refrigerant circulation loop and a second refrigerant circulation loop. The dishwasher heat pump device includes a three-way pipe, a first one-way valve, and a second one-way valve. The three-way pipe includes a first pipe body, a second pipe body, and a third pipe body, both of which are connected to the first pipe body. The first refrigerant circulation loop includes the second pipe body and the first pipe body, and the second refrigerant circulation loop includes the third pipe body and the first pipe body. The first one-way valve is at least partially located in the second pipe body and connects the pipes of the second pipe body and the first pipe body in one direction. The second one-way valve is at least partially located in the third pipe body and connects the pipes of the third pipe body and the first pipe body in one direction. The inner wall of the second pipe body is provided with a first limiting part, and the first one-way valve is provided with a second limiting part, with the first limiting part and the second limiting part engaging in a concave-convex fit. The inner wall of the third pipe body is provided with a third limiting part, and the second one-way valve is provided with a fourth limiting part, with the third limiting part and the fourth limiting part engaging in a concave-convex fit.

[0006] In this embodiment of the application, by setting a three-way pipe and installing a first one-way valve in the second pipe body and a second one-way valve in the third pipe body, the risk of refrigerant backflow in the second and third pipe bodies can be reduced, thereby reducing the risk of mutual interference between the first and second refrigerant circulation loops. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the structure of a dishwasher heat pump device provided in some embodiments of this application; Figure 2 This is a partial structural schematic diagram of a dishwasher heat pump device provided in some embodiments of this application; Figure 3 This is an assembly diagram of a three-way pipe, a first check valve, and a second check valve provided in some embodiments of this application; Figure 4 for Figure 3 A magnified view of a portion of region A in the middle; Figure 5 This application provides an assembly diagram of the second check valve and the third pipe body for some embodiments; Figure 6 A partial structural schematic diagram of a heat pump device provided for some embodiments of this application; Figure 7 This is a schematic diagram of the structure of a tee pipe provided in some embodiments of this application; Figure 8 for Figure 7 BB cross-sectional view; Figure 9 A schematic diagram of the assembly of the liquid reservoir and filter provided for some embodiments of this application; Figure 10 This is a schematic diagram of the structure of a dishwasher heat pump device provided in some embodiments of this application.

[0009] icon: a-First main path; b-First branch path; c-Second branch path; d-Third branch path; e-Fourth branch path; f-Second main path; 1-T-connector; 11-First pipe body; 111-Inlet end; 112-Outlet end; 12-Second pipe body; 121-First limiting part; 1211-First protrusion; 122-Third recess; 13-Third pipe body; 131-Third limiting part; 1311-Second protrusion; 132-Fourth recess; 2-First check valve; 21-Second limiting part; 211-First recess; 22-First valve seat; 2 3-First retaining ring; 3-Second one-way valve; 31-Fourth limiting part; 311-Second recess; 32-Second valve seat; 33-Second retaining ring; 4-Filter; 5-Liquid reservoir; 51-Inner chamber; 511-Inlet chamber; 512-Outlet chamber; 6-Throttling device; 61-Inlet branch; 62-First outlet branch; 63-Second outlet branch; 7-First condenser; 8-Second condenser; 9-First evaporator; 101-Second evaporator; 102-Compressor; 10-Dishwasher heat pump device; X-First direction. Detailed Implementation

[0010] To make this application clearer, specific embodiments are described below with reference to the accompanying drawings: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of a dishwasher heat pump device 10 provided in some embodiments of this application; Figure 2 A partial structural schematic diagram of a dishwasher heat pump device 10 provided in some embodiments of this application; Figure 3 An assembly diagram of the three-way pipe 1, the first check valve 2, and the second check valve 3 provided for some embodiments of this application; Figure 4 for Figure 3A partial enlarged view of region A. This application provides a dishwasher heat pump device 10, which has a first refrigerant circulation loop and a second refrigerant circulation loop. The dishwasher heat pump device 10 includes a three-way pipe 1, a first one-way valve 2, and a second one-way valve 3. The three-way pipe 1 includes a first pipe body 11, a second pipe body 12, and a third pipe body 13. Both the second pipe body 12 and the third pipe body 13 are connected to the first pipe body 11. The first refrigerant circulation loop includes the second pipe body 12 and the first pipe body 11, and the second refrigerant circulation loop includes the third pipe body 13 and the first pipe body 11. The first one-way valve 2 is at least partially located inside the second pipe body 12, and the first one-way valve 2 is connected in one direction to the pipe of the second pipe body 12 and the pipe of the first pipe body 11; the second one-way valve 3 is at least partially located inside the third pipe body 13, and the second one-way valve 3 is connected in one direction to the pipe of the third pipe body 13 and the pipe of the first pipe body 11; wherein, the inner wall of the second pipe body 12 is provided with a first limiting part 121, the first one-way valve 2 is provided with a second limiting part 21, and the first limiting part 121 and the second limiting part 21 are in a concave-convex fit; the inner wall of the third pipe body 13 is provided with a third limiting part 131, the second one-way valve 3 is provided with a fourth limiting part 31, and the third limiting part 131 and the fourth limiting part 31 are in a concave-convex fit.

[0011] The first and second refrigerant circulation loops are respectively circulated with refrigerant to heat or cool the heat exchange stations of the dishwasher. These heat exchange stations can be high-temperature washing stations, high-temperature drying stations, etc. For example, the first refrigerant circulation loop is used to heat the washing water in the high-temperature washing station to wash the dishes; the second refrigerant circulation loop is used to heat the airflow flowing towards the dishes in the high-temperature drying station to dry the dishes.

[0012] The first one-way valve 2 can be entirely located inside the second pipe body 12; or it can be partially located inside the second pipe body 12 and partially located outside the second pipe body 12. The first one-way valve 2 can unidirectionally connect the pipes of the second pipe body 12 and the pipes of the first pipe body 11. The first pipe body 11 can be a liquid outlet pipe, and the first one-way valve 2 can allow the refrigerant flowing into the second pipe body 12 to flow into the first pipe body 11, and inhibit the refrigerant in the first pipe body 11 from flowing into the second pipe body 12; the first pipe body 11 can also be a liquid inlet pipe, and the first one-way valve 2 can allow the refrigerant flowing into the first pipe body 11 to flow into the second pipe body 12, and inhibit the refrigerant in the second pipe body 12 from flowing into the first pipe body 11. The second one-way valve 3 can be entirely located inside the third pipe body 13; or it can be partially located inside the third pipe body 13 and partially located outside the third pipe body 13. The second one-way valve 3 can unidirectionally connect the pipes of the third pipe body 13 and the pipes of the first pipe body 11. The first pipe body 11 can be a liquid outlet pipe, and the second one-way valve 3 can allow the refrigerant flowing into the third pipe body 13 to flow to the first pipe body 11 and inhibit the refrigerant in the first pipe body 11 from flowing to the third pipe body 13; the first pipe body 11 can be a liquid inlet pipe, and the second one-way valve 3 can allow the refrigerant flowing into the first pipe body 11 to flow to the third pipe body 13 and inhibit the refrigerant in the third pipe body 13 from flowing to the first pipe body 11.

[0013] A first limiting part 121 is disposed on the inner wall of the second pipe body 12, and a second limiting part 21 is disposed on the first one-way valve 2. The first limiting part 121 can be a convex part, and the second limiting part 21 a concave part, with at least a portion of the first limiting part 121 embedded within it, to achieve a concave-convex fit between the first limiting part 121 and the second limiting part 21; alternatively, the first limiting part 121 can be a concave part, and the second limiting part 21 a convex part, with at least a portion of the second limiting part 21 embedded within it, to achieve a concave-convex fit between the first limiting part 121 and the second limiting part 21. This concave-convex fit between the first limiting part 121 and the second limiting part 21 limits their axial movement along the second pipe body 12, thereby limiting the axial movement of the second pipe body 12 and the first one-way valve 2.

[0014] The third limiting part 131 is disposed on the inner wall of the third pipe body 13, and the fourth limiting part 31 is disposed on the second one-way valve 3. The third limiting part 131 may be a convex part, and the fourth limiting part 31 may be a concave part, with at least a portion of the third limiting part 131 embedded within the fourth limiting part 31 to achieve a concave-convex fit between the third limiting part 131 and the fourth limiting part 31; alternatively, the third limiting part 131 may be a concave part, and the fourth limiting part 31 may be a convex part, with at least a portion of the fourth limiting part 31 embedded within the third limiting part 131 to achieve a concave-convex fit between the third limiting part 131 and the fourth limiting part 31. This concave-convex fit between the third limiting part 131 and the fourth limiting part 31 limits their axial movement along the third pipe body 13, thereby axially limiting the third pipe body 13 and the second one-way valve 3.

[0015] In this embodiment, the convex-concave fit of the first limiting part 121 and the second limiting part 21 enables axial positioning of the second pipe body 12 and the first one-way valve 2, improving the positional stability of the first one-way valve 2 within the second pipe body 12. Similarly, the convex-concave fit of the third limiting part 131 and the fourth limiting part 31 enables axial positioning of the third pipe body 13 and the second one-way valve 3, improving the positional stability of the second one-way valve 3 and the third pipe body 13. This structure reduces the risk of the first one-way valve 2 and the second one-way valve 3 detaching from their installation positions, thereby reducing the risk of refrigerant backflow and mutual interference between the first and second refrigerant circulation loops due to pressure fluctuations or flow differences, and improving the performance of the dishwasher heat pump device 10.

[0016] In related technologies, a dishwasher heat pump device includes a three-way pipe and a one-way valve component. The one-way valve component includes a one-way valve pipe and a one-way valve, with the one-way valve disposed within the one-way valve pipe and connected to it. The one-way valve pipe is welded to the three-way pipe. This application places the first one-way valve 2 and the second one-way valve 3 within the three-way pipe 1, reducing the overall size of the dishwasher heat pump device 10, increasing its integration, reducing the number of weld points, lowering the risk of refrigerant leakage, and improving its sealing performance.

[0017] In some embodiments, the first tube 11 is an outlet tube, and the second tube 12 and the third tube 13 are inlet tubes. At least two of the first tube 11, the second tube 12 and the third tube 13 are integral pieces.

[0018] The first one-way valve 2 unidirectionally connects the second pipe body 12 and the first pipe body 11 to guide the refrigerant in the second pipe body 12 to the first pipe body 11. The second one-way valve 3 unidirectionally connects the third pipe body 13 and the first pipe body 11 to guide the refrigerant in the third pipe body 13 to the first pipe body 11.

[0019] The first tube 11 and the second tube 12 can be a single piece. Alternatively, the first tube 11 and the third tube 13 can be a single piece. Alternatively, the second tube 12 and the third tube 13 can be a single piece. Alternatively, the first tube 11, the second tube 12, and the third tube 13 can be a single piece.

[0020] In this embodiment, when the first refrigerant circulation loop is operating, the second one-way valve 3 can reduce the risk of refrigerant flowing back to the third pipe 13 through the first pipe 11. When the second refrigerant circulation loop is operating, the first one-way valve 2 can reduce the risk of refrigerant flowing back to the second pipe 12 through the first pipe 11. The arrangement of the first one-way valve 2 and the second one-way valve 3 can reduce the risk of mutual interference between the first and second refrigerant circulation loops, improving the performance of the dishwasher heat pump device 10. The fact that at least two of the first pipe 11, the second pipe 12, and the third pipe 13 are integral components can reduce the number of weld points in the dishwasher heat pump device 10, thereby reducing the risk of refrigerant leakage in the dishwasher heat pump device 10.

[0021] In some embodiments, the first one-way valve 2 may include a first valve seat 22 and a first retaining ring 23. The first valve seat 22 has an opening extending through the second pipe body 12 along its axial direction. The first retaining ring 23 is movable along the axial direction of the second pipe body 12 to block or open the opening of the first valve seat 22, thereby enabling the first one-way valve 2 to conduct unidirectionally between the second pipe body 12 and the first pipe body 11. The first valve seat 22 is provided with a retaining ring sleeve, which restricts the position of the first retaining ring 23 to reduce the risk of the first retaining ring 23 detaching from the first valve seat 22. A second limiting portion 21 may be provided on the outer peripheral wall of the first valve seat 22.

[0022] In some embodiments, the second one-way valve 3 may include a second valve seat 32 and a second retaining ring 33. The second valve seat 32 has an opening extending through the third pipe body 13 along its axial direction. The second retaining ring 33 is movable along the axial direction of the third pipe body 13 to block or open the opening of the second valve seat 32, thereby enabling the second one-way valve 3 to conduct unidirectionally between the third pipe body 13 and the first pipe body 11. The second valve seat 32 is provided with a retaining ring sleeve, which restricts the position of the second retaining ring 33 to reduce the risk of the second retaining ring 33 detaching from the second valve seat 32. A fourth limiting part 31 may be provided on the outer peripheral wall of the second valve seat 32.

[0023] In some embodiments, please continue to refer to Figure 1The dishwasher heat pump unit 10 may further include a first branch b, a second branch c, a first main branch a, a throttling device 6, a compressor 102, a first condenser 7, a second condenser 8, and a first evaporator 9. The first branch b and the second branch c are both connected to the first main branch a. The first branch b is connected to the pipe of the second pipe body 12, the second branch c is connected to the pipe of the third pipe body 13, and the pipe of the first pipe body 11 is connected to the first main branch a. The throttling device 6 is located in the first main branch a to control the flow rate of refrigerant in the first main branch a. The first evaporator 9 is located in the first main branch a to regulate the temperature of the refrigerant. The compressor 102 is located in the first main branch a to supply refrigerant to the first branch b and the second branch c. The first condenser 7 is located in the first branch b, and the second condenser 8 is located in the second branch c to heat the refrigerant in the first branch b and the second branch c, respectively. The first condenser 7 can be used to heat the washing water, and the second condenser 8 can be used to heat the airflow flowing towards the dishes. The first refrigerant circulation loop includes a first main circuit a and a first branch circuit b. The second refrigerant circulation loop includes a second main circuit f and a second branch circuit c.

[0024] In some embodiments, the first main channel a may also be equipped with a filter 4 and a reservoir 5.

[0025] In some embodiments, please continue to refer to Figure 3 and Figure 4 The first limiting part 121 includes a first protrusion 1211 disposed on the inner wall of the second tube body 12, and the second limiting part 21 includes a first recess 211 disposed on the first one-way valve 2, wherein the first protrusion 1211 is at least partially embedded in the first recess 211.

[0026] The number of first protrusions 1211 can be one or more. In an embodiment where there is one first protrusion 1211, the first protrusion 1211 may be located on one side of the first one-way valve 2 along the radial direction of the second pipe body 12; or the first protrusion 1211 may be arranged around the first one-way valve 2. In an embodiment where there are multiple first protrusions 1211, the multiple first protrusions 1211 may be arranged circumferentially spaced around the axial direction of the second pipe body 12. The first protrusion 1211 may be integrally formed with the pipe wall of the second pipe body 12; or the first protrusion 1211 and the pipe wall of the second pipe body 12 may be separately arranged and connected, for example, the first protrusion 1211 and the second pipe body 12 may be welded together.

[0027] The first recess 211 is provided correspondingly to the first protrusion 1211. In embodiments where there are multiple first protrusions 1211, each first protrusion 1211 may be provided with a corresponding first recess 211; alternatively, the first recess 211 may be provided around the first one-way valve 2, so that at least a portion of the multiple first protrusions 1211 can be embedded in the first recess 211.

[0028] The first protrusion 1211 may be completely embedded in the first recess 211; or only a portion of the first protrusion 1211 may be embedded in the first recess 211, while the other portion may be located outside the first recess 211.

[0029] In some embodiments, the third limiting portion 131 includes a second protrusion 1311 disposed on the inner wall of the third tube 13, and the fourth limiting portion 31 includes a second recess 311 disposed on the second one-way valve 3, with at least a portion of the second protrusion 1311 embedded in the second recess 311.

[0030] The number of second protrusions 1311 can be one or more. In an embodiment where there is one second protrusion 1311, the second protrusion 1311 may be located on one side of the second one-way valve 3 along the radial direction of the third pipe body 13; or the second protrusion 1311 may be arranged around the second one-way valve 3. In an embodiment where there are multiple second protrusions 1311, the multiple second protrusions 1311 may be arranged circumferentially spaced around the axial direction of the third pipe body 13. The second protrusion 1311 may be integrally formed with the pipe wall of the third pipe body 13; or the second protrusion 1311 may be separately arranged and connected with the pipe wall of the third pipe body 13, for example, the second protrusion 1311 may be welded to the third pipe body 13.

[0031] The second recess 311 is provided correspondingly to the second protrusion 1311. In embodiments where there are multiple second protrusions 1311, each second protrusion 1311 may be provided with a corresponding second recess 311; alternatively, the second recess 311 may be provided around the second one-way valve 3, so that at least a portion of the multiple second protrusions 1311 can be embedded in the second recess 311.

[0032] The second protrusion 1311 may be completely embedded in the second recess 311; or only a portion of the second protrusion 1311 may be embedded in the second recess 311, while the other portion may be located outside the second recess 311.

[0033] In this embodiment, by providing a first protrusion 1211 on the inner wall of the second pipe body 12 and a first recess 211 on the first one-way valve 2, the installation difficulty and cost of the first one-way valve 2 are reduced; on the other hand, the structural stability of the first one-way valve 2 and the second pipe body 12 is improved, reducing the risk of the first one-way valve 2 detaching from its installation position. Similarly, by providing a second protrusion 1311 on the inner wall of the third pipe body 13 and a second recess 311 on the second one-way valve 3, the installation difficulty and cost of the second one-way valve 3 are reduced; furthermore, the structural stability of the second one-way valve 3 and the third pipe body 13 is improved, reducing the risk of the second one-way valve 3 detaching from its installation position.

[0034] In some embodiments, please continue to refer to Figure 4 A third recess 122 is provided on the outer wall of the second tube 12 at a position corresponding to the first protrusion 1211.

[0035] Along the thickness direction of the wall of the second tube 12, the first protrusion 1211 and the third recess 122 are arranged opposite to each other. The first protrusion 1211 can be pressed out at the location where the first one-way valve 2 is installed on the second tube 12, and the third recess 122 can be formed on the outer wall of the second tube 12 at a position corresponding to the first protrusion 1211. Alternatively, the third recess 122 can be formed on the outer wall of the second tube 12 at a position corresponding to the first protrusion 1211. Each first protrusion 1211 can have one corresponding third recess 122; or multiple first protrusions 1211 can have one corresponding third recess 122.

[0036] In this embodiment, by providing the third recess 122, on the one hand, the difficulty of setting the first protrusion 1211 can be reduced, and the assembly cost of the first check valve 2 can be reduced; on the other hand, it is beneficial to confirm the installation position of the first check valve 2, which facilitates the maintenance and assembly of the first check valve 2.

[0037] In some embodiments, please refer to Figure 5 , Figure 5 This is a schematic diagram of the assembly of the second one-way valve 3 and the third pipe body 13 provided in some embodiments of this application. A fourth recess 132 is provided on the outer wall of the third pipe body 13 at a position corresponding to the second protrusion 1311.

[0038] Along the thickness direction of the wall of the third tube 13, the second protrusion 1311 and the fourth recess 132 are arranged opposite to each other. The second protrusion 1311 can be pressed out at the location where the second one-way valve 3 is installed on the third tube 13, and the fourth recess 132 can be formed on the outer wall of the third tube 13 at a position corresponding to the second protrusion 1311. Alternatively, the fourth recess 132 can be formed on the outer wall of the third tube 13 at a position corresponding to the second protrusion 1311. Each second protrusion 1311 can have one fourth recess 132 corresponding to it; or multiple second protrusions 1311 can have one fourth recess 132 corresponding to them.

[0039] In this embodiment, by providing the fourth recess 132, on the one hand, the difficulty of setting the second protrusion 1311 can be reduced, and the assembly cost of the second check valve 3 can be reduced; on the other hand, it is beneficial to confirm the installation position of the second check valve 3, which facilitates the maintenance and assembly of the second check valve 3.

[0040] In some embodiments, both the first protrusion 1211 and the first recess 211 are arranged around the first one-way valve 2.

[0041] The first protrusion 1211 is an annular structure and is disposed around the outer periphery of the first one-way valve 2. The first recess 211 is an annular structure and is disposed around the outer periphery of the first one-way valve 2.

[0042] In this embodiment, the first protrusion 1211 and the first recess 211 are both arranged around the first one-way valve 2, making the assembly of the first one-way valve 2 and the second pipe body 12 more stable.

[0043] In some embodiments, the first protrusion 1211 and the first recess 211 are interference-fitted. This improves the sealing performance of the first check valve 2 and the second pipe body 12.

[0044] In some embodiments, the second protrusion 1311 and the second recess 311 are both disposed around the second one-way valve 3.

[0045] The second protrusion 1311 is an annular structure and is disposed around the outer periphery of the second one-way valve 3. The second recess 311 is an annular structure and is disposed around the outer periphery of the second one-way valve 3.

[0046] In this embodiment, the second protrusion 1311 and the second recess 311 are both arranged around the second one-way valve 3, making the assembly of the second one-way valve 3 and the third tube 13 more stable.

[0047] In some embodiments, the second protrusion 1311 and the second recess 311 are interference-fitted, which can improve the sealing performance of the second check valve 3 and the third pipe body 13.

[0048] In some embodiments, please refer to Figure 6 , Figure 7 and Figure 8 , Figure 6 A partial structural schematic diagram of a heat pump device provided for some embodiments of this application; Figure 7 This is a schematic diagram of the structure of the tee pipe 1 provided in some embodiments of this application; Figure 8 for Figure 7 BB cross-sectional view. The second tube 12, the third tube 13 and the first tube 11 all extend along the first direction X, and the second tube 12 and the third tube 13 are connected to the same end of the first tube 11 along the first direction X.

[0049] Please refer to Figure 6 and Figure 7 The first tube 11 has an inlet end 111 and an outlet end 112, which are arranged opposite to each other along the first direction X. The second tube 12 and the third tube 13 are both connected to the inlet end 111 of the first tube 11.

[0050] The extension directions of the second tube 12 and the third tube 13 are parallel to the extension direction of the first tube 11. The refrigerant in the second tube 12 and the third tube 13 can flow into the first tube 11 along the first direction X.

[0051] In this embodiment, by setting the second pipe 12 and the first pipe 11 to extend along the first direction X, and the second pipe 12 to be connected to one end of the first pipe 11 along the first direction X, when the refrigerant in the second pipe 12 flows into the first pipe 11, the refrigerant can flow along the first direction X, reducing the flow resistance of the refrigerant in the three-way pipe 1 and improving the refrigerant transfer efficiency. By setting the third pipe 13 and the first pipe 11 to extend along the first direction X, and the third pipe 13 to be connected to one end of the first pipe 11 along the first direction X, when the refrigerant in the third pipe 13 flows into the first pipe 11, the refrigerant can flow along the first direction X, reducing the kinetic energy loss of the refrigerant caused by the deflection of the refrigerant flow direction and improving the refrigerant transfer efficiency. The fact that the second pipe 12 and the third pipe 13 are connected to the same end of the first pipe 11 along the first direction X can reduce the risk of increased load on the second one-way valve 3 and the first one-way valve 2 due to refrigerant convection in the second pipe 12 and the third pipe 13, thereby reducing the risk of damage to the heat pump device.

[0052] In some embodiments, in a projection plane perpendicular to the first direction X, at least a portion of the orthographic projection of the wall corresponding to the pipe of the second pipe 12 and at least a portion of the orthographic projection of the wall corresponding to the pipe of the third pipe 13 are located within the orthographic projection of the wall corresponding to the pipe of the first pipe 11.

[0053] It is possible that the entire orthographic projection of the wall corresponding to the pipe of the second pipe body 12 is located within the orthographic projection of the wall corresponding to the pipe of the first pipe body 11; or it is possible that only a portion of the orthographic projection of the wall corresponding to the pipe of the second pipe body 12 is located within the orthographic projection of the wall corresponding to the pipe of the first pipe body 11, and the other portion is located outside the orthographic projection of the wall corresponding to the pipe of the first pipe body 11.

[0054] It is possible that the entire orthographic projection of the wall corresponding to the pipe of the third pipe body 13 is located within the orthographic projection of the wall corresponding to the pipe of the first pipe body 11; or it is possible that only a portion of the orthographic projection of the wall corresponding to the pipe of the third pipe body 13 is located within the orthographic projection of the wall corresponding to the pipe of the first pipe body 11, and the other portion is located outside the orthographic projection of the wall corresponding to the pipe of the first pipe body 11.

[0055] In this embodiment, in the projection plane perpendicular to the first direction X, by setting at least a portion of the orthographic projection of the wall corresponding to the pipe of the second pipe 12 and at least a portion of the orthographic projection of the wall corresponding to the pipe of the third pipe 13 to be located within the orthographic projection of the wall corresponding to the pipe of the first pipe 11, on the one hand, the second pipe 12 and the third pipe 13 can guide the refrigerant to the first pipe 11 along the first direction X, thereby improving the refrigerant transmission efficiency; on the other hand, the structure of the three-way pipe 1 is made more compact, saving the space occupied by the three-way pipe 1.

[0056] In some embodiments, please continue to refer to Figure 8 The dishwasher heat pump device 10 also includes a filter 4, which is disposed inside the first tube 11 and welded to the first tube 11.

[0057] Filter 4 can filter the refrigerant flowing into the first pipe 11 from the second pipe 12 and the third pipe 13. Filter 4 is welded to the wall of the first pipe 11.

[0058] In this embodiment, the filter 4 can filter impurities in the refrigerant flowing through the first pipe 11, reducing the risk of blockage in the first and second refrigerant circulation loops. The welded connection between the filter 4 and the first pipe 11 enhances the connection strength between them, reducing the risk of the filter 4 detaching from its installation position.

[0059] In some embodiments, please refer to Figure 9 , Figure 9 This is a schematic diagram of the assembly of the reservoir 5 and filter 4 provided in some embodiments of this application. The dishwasher heat pump device 10 also includes a reservoir 5 and a filter 4. The inner chamber 51 of the reservoir 5 is connected to the pipe of the first pipe body 11, and the filter 4 is disposed in the inner chamber 51 of the reservoir 5.

[0060] The receiver 5 is used to receive and store refrigerant supplied by the first refrigerant circulation loop and the second refrigerant circulation loop; it is also used to supply refrigerant to the first refrigerant circulation loop and the second refrigerant circulation loop.

[0061] The filter 4 divides the inner chamber 51 of the reservoir 5 into an inlet chamber 511 and an outlet chamber 512, and the pipe of the first tube 11 is connected to the inlet chamber 511. The filter 4 can be welded to the reservoir 5, snap-fitted, etc.

[0062] In this embodiment, by providing a filter 4 in the inner chamber 51 of the liquid receiver 5, the filter 4 can filter the refrigerant flowing into the liquid receiver 5, so that the liquid receiver 5 can provide cleaner refrigerant for the first refrigerant circulation loop and the second refrigerant circulation loop, reducing the risk of the first refrigerant circulation loop and the second refrigerant circulation loop being blocked.

[0063] In some embodiments, please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of a dishwasher heat pump device 10 provided in some embodiments of this application. The dishwasher heat pump device 10 includes a first main line a and a throttling device 6. The throttling device 6 has a liquid inlet branch 61, a first liquid outlet branch 62, and a second liquid outlet branch 63. The first main line a connects the liquid inlet branch 61 and the first pipe body 11. The first refrigerant circulation loop includes the second pipe body 12, the first pipe body 11, the first main line a, the liquid inlet branch 61, and the first liquid outlet branch 62. The second refrigerant circulation loop includes the third pipe body 13, the first pipe body 11, the first main line a, the liquid inlet branch 61, and the second liquid outlet branch 63. The dishwasher heat pump device 10 has a washing mode and a drying mode. In the washing mode, the liquid inlet branch 61 is connected to the first liquid outlet branch 62. In the drying mode, the liquid inlet branch 61 is connected to the second liquid outlet branch 63.

[0064] In the cleaning mode, the refrigerant flowing out of the first liquid outlet branch 62 can be used to provide heat for the high-temperature cleaning station of the dishwasher. After heat exchange in the high-temperature cleaning station of the dishwasher, the refrigerant can flow into the pipe of the second pipe body 12.

[0065] In drying mode, the refrigerant flowing out of the second liquid outlet branch 63 can be used to provide heat for the high-temperature drying station of the dishwasher. After heat exchange in the high-temperature cleaning station of the dishwasher, the refrigerant can flow into the pipe of the third pipe body 13.

[0066] The first refrigerant circulation loop and the second refrigerant circulation loop share the first pipe body 11, the first main line a, and the liquid inlet branch line 61.

[0067] In some embodiments, the receiver 5 may be located on the first main line a. The pipe of the first pipe body 11 of the tee pipe 1 is connected to the first main line a, and the refrigerant flowing through the first pipe body 11 flows to the receiver 5. The inlet branch 61 of the throttling device 6 is connected to the first main line a to receive the refrigerant flowing out of the receiver 5.

[0068] In this embodiment, the throttling device 6 can control the flow rate of refrigerant flowing out of the first liquid outlet branch 62 and the second liquid outlet branch 63, thereby improving the temperature regulation effect of the dishwasher heat pump device 10. The washing mode and the drying mode share the first pipe body 11, the first main line a, the liquid inlet branch 61 and the liquid receiver 5, which can reduce the number of parts used in the dishwasher heat pump device 10, thus saving material costs and space, and optimizing the internal structural layout of the dishwasher.

[0069] In some embodiments, the dishwasher heat pump device 10 includes a first branch b, a second branch c, a third branch d, and a fourth branch e. ​​The first branch b is connected to the second pipe body 12, the second branch c is connected to the third pipe body 13, the third branch d is connected to the first liquid outlet branch 62, and the fourth branch e is connected to the second liquid outlet branch 63. The first refrigerant circulation loop includes the first branch b, the second pipe body 12, the first pipe body 11, the first main line a, the liquid inlet branch 61, the first liquid outlet branch 62, and the third branch d. The second refrigerant circulation loop includes the second branch c, the third pipe body 13, the first pipe body 11, the first main line a, the liquid inlet branch 61, the second liquid outlet branch 63, and the fourth branch e.

[0070] The dishwasher heat pump device 10 includes a first condenser 7, a second condenser 8, a first evaporator 9, and a second evaporator 101. The first condenser 7 is located in the first branch b, the second condenser 8 is located in the second branch c, the first evaporator 9 is located in the third branch d, and the second evaporator 101 is located in the fourth branch e.

[0071] In cleaning mode, the refrigerant flowing out of the first main line a can flow to the third branch d through the liquid inlet branch 61 and the first liquid outlet branch 62. The first evaporator 9 located in the third branch d can cool the refrigerant. The cooled refrigerant can flow to the first branch b. The first condenser 7 of the first branch b can heat the refrigerant, thereby exchanging heat with the washing water in the high-temperature cleaning station to heat the washing water. The refrigerant flowing out of the first condenser 7 can flow to the second pipe 12 and return to the first main line a through the first pipe 11.

[0072] In drying mode, the refrigerant flowing out of the first main path a can flow to the fourth branch e through the liquid inlet branch 61 and the second liquid outlet branch 63. The second evaporator 101 located in the fourth branch e can cool the refrigerant. The cooled refrigerant can flow to the second branch c. The second condenser 8 in the second branch c can heat the airflow that dries the tableware, thereby exchanging heat with the airflow. The airflow passes through the tableware, achieving the drying of the tableware. The refrigerant flowing out of the second condenser 8 can flow to the third pipe 13 and return to the first main path a through the first pipe 11.

[0073] In some embodiments, the second evaporator 101 is disposed in the airflow channel of the drying tableware, which can condense the moisture in the airflow, thereby collecting the washing water in the tableware and improving the drying effect.

[0074] In some embodiments, the dishwasher heat pump device 10 further includes a compressor 102 and a second main circuit f, wherein a third branch circuit d, a fourth branch circuit e, a first branch circuit b, and a second branch circuit c are all connected to the second main circuit f. The compressor 102 is disposed on the second main circuit f.

[0075] In cleaning mode, compressor 102 can pump the refrigerant supplied by the first branch b into the third branch d. In drying mode, compressor 102 can pump the refrigerant supplied by the second branch c into the fourth branch e.

[0076] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0077] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dishwasher heat pump device (10) having a first refrigerant circulation loop and a second refrigerant circulation loop, characterized in that, The dishwasher heat pump unit (10) includes: The three-way pipe (1) includes a first pipe body (11), a second pipe body (12) and a third pipe body (13). The second pipe body (12) and the third pipe body (13) are both connected to the first pipe body (11). The first refrigerant circulation loop includes the second pipe body (12) and the first pipe body (11). The second refrigerant circulation loop includes the third pipe body (13) and the first pipe body (11). The first one-way valve (2) is located at least partially inside the second pipe body (12), and the first one-way valve (2) is connected in one direction to the pipe of the second pipe body (12) and the pipe of the first pipe body (11); The second one-way valve (3) is located at least partially inside the third pipe body (13), and the second one-way valve (3) is connected in one direction to the pipe of the third pipe body (13) and the pipe of the first pipe body (11); The inner wall of the second tube (12) is provided with a first limiting part (121), and the first one-way valve (2) is provided with a second limiting part (21). The first limiting part (121) and the second limiting part (21) are in concave-convex cooperation. The inner wall of the third tube (13) is provided with a third limiting part (131), and the second one-way valve (3) is provided with a fourth limiting part (31). The third limiting part (131) and the fourth limiting part (31) are in concave-convex cooperation.

2. The dishwasher heat pump device (10) as described in claim 1, characterized in that, The first limiting part (121) includes a first protrusion (1211) disposed on the inner wall of the second tube body (12), and the second limiting part (21) includes a first recess (211) disposed on the first one-way valve (2), and the first protrusion (1211) is at least partially embedded in the first recess (211).

3. The dishwasher heat pump device (10) as described in claim 2, characterized in that, The outer wall of the second tube (12) is provided with a third recess (122) at a position corresponding to the first protrusion (1211).

4. The dishwasher heat pump device (10) as described in claim 2 or 3, characterized in that, Both the first protrusion (1211) and the first recess (211) are arranged around the first one-way valve (2).

5. The dishwasher heat pump device (10) as described in any one of claims 1-3, characterized in that, The first tube (11) is an outlet tube, and the second tube (12) and the third tube (13) are both inlet tubes; At least two of the first tube (11), the second tube (12) and the third tube (13) are integral parts.

6. The dishwasher heat pump device (10) as described in any one of claims 1-3, characterized in that, The second tube (12), the third tube (13) and the first tube (11) all extend along the first direction (X), and the second tube (12) and the third tube (13) are connected to the same end of the first tube (11) along the first direction (X).

7. The dishwasher heat pump device (10) as described in any one of claims 1-3, characterized in that, The dishwasher heat pump device (10) also includes a filter (4), which is disposed inside the first tube (11) and is welded to the first tube (11).

8. The dishwasher heat pump device (10) as described in any one of claims 1-3, characterized in that, The dishwasher heat pump device (10) also includes a reservoir (5) and a filter (4). The inner chamber (51) of the reservoir (5) is connected to the pipe of the first pipe body (11), and the filter (4) is disposed in the inner chamber (51) of the reservoir (5).

9. The dishwasher heat pump device (10) as described in any one of claims 1-3, characterized in that, The dishwasher heat pump device (10) includes a first main line (a) and a throttling device (6). The throttling device (6) has a liquid inlet branch (61), a first liquid outlet branch (62), and a second liquid outlet branch (63). The first main line (a) is a pipe connecting the liquid inlet branch (61) and the first pipe body (11). The first refrigerant circulation loop includes the second pipe body (12), the first pipe body (11), the first main line (a), the liquid inlet branch (61), and the first liquid outlet branch (62). The second refrigerant circulation loop includes the third pipe body (13), the first pipe body (11), the first main line (a), the liquid inlet branch (61), and the second liquid outlet branch (63). The dishwasher heat pump device (10) has a cleaning mode and a drying mode. In the cleaning mode, the liquid inlet branch (61) is connected to the first liquid outlet branch (62); in the drying mode, the liquid inlet branch (61) is connected to the second liquid outlet branch (63).

10. The dishwasher heat pump device (10) as claimed in claim 9, characterized in that, The dishwasher heat pump device (10) includes a first branch (b), a second branch (c), a third branch (d), and a fourth branch (e). The first branch (b) is connected to the second pipe (12), the second branch (c) is connected to the third pipe (13), the third branch (d) is connected to the first liquid outlet branch (62), and the fourth branch (e) is connected to the second liquid outlet branch (63). The first refrigerant circulation loop includes the first branch (b), the second pipe (12), the first pipe (11), the first main line (a), the liquid inlet branch (61), the first liquid outlet branch (62), and the third branch (d). The second refrigerant circulation loop includes the second branch (c), the third pipe (13), the first pipe (11), the first main line (a), the liquid inlet branch (61), the second liquid outlet branch (63), and the fourth branch (e). The dishwasher heat pump device (10) includes a first condenser (7), a second condenser (8), a first evaporator (9), and a second evaporator (101). The first condenser (7) is located in the first branch (b), the second condenser (8) is located in the second branch (c), the first evaporator (9) is located in the third branch (d), and the second evaporator (101) is located in the fourth branch (e).

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