Pipe orifice limiting device of heat pump system and heat pump system

Abstract

The utility model provides a heat pump system's pipe orifice limit device is used for the cooperation installation with the casing of heat pump system, including side plate main part, water pan, pipe orifice limit piece and pipe orifice compression piece, the water pan is provided the inside of side plate main part, the side plate main part is provided with the first through-hole that the pipe orifice of heat pump system passes through, the pipe orifice compression piece is provided with the first through-hole, the pipe orifice limit piece is provided with the first through-hole, and the pipe orifice compression piece is provided with the second through-hole. The side plate body is provided with a first through hole, the water pan is provided with a second through hole matched with the first through hole, the pipe opening limiting piece is arranged in the second through hole, a pipe opening limiting hole used for limiting a pipe opening of the heat pump system is defined by the pipe opening limiting piece and the second through hole, and the pipe opening pressing piece is arranged on the outer side of the side plate body. The pipe opening pressing piece is provided with a pressing groove used for pressing a pipe opening of the heat pump system. The pipe orifice limiting device of the heat pump system is simple in structure and convenient to assemble, the assembling efficiency of the heat pump system can be improved, and due to the fact that double limiting is conducted on the pipe orifice of the heat pump system, the fixing effect of the pipe orifice limiting device is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a pipe orifice limiting device of a heat pump system and a heat pump system. Background Art

[0002] A heat pump system is a highly efficient thermal system that utilizes external heat sources (such as geothermal, hydrothermal, air-heated, or solar) to convert low-temperature heat into high-temperature heat to meet heating and hot water needs. The refrigerant and water inlet and outlet ports of a heat pump system are typically located on the side panels of the heat pump housing, facilitating connections to external refrigerant and water supply equipment.

[0003] At present, the pipe orifice through-holes on the existing shell side panels generally match the pipe orifices of the refrigerant pipes and the inlet and outlet water pipes, which is convenient for limiting and fixing the pipe orifices. However, when assembling the heat pump system, due to the narrow diameter of the pipe orifice through-holes, the pipe orifices need to be fixed on the shell side panels so that the pipe orifices are vertically passed through the shell side panels. The installation requires high precision, which is inconvenient for installation and has low assembly efficiency. Utility Model Content

[0004] The purpose of this application is to solve the above problems and provide a pipe mouth limiting device for a heat pump system to solve the technical problem that the pipe mouth of the heat pump system is limited on the side panel of the shell and is inconvenient to assemble.

[0005] To achieve the above-mentioned purpose, the present application provides a pipe orifice limiting device of a heat pump system, which is used for being installed in cooperation with the shell of the heat pump system, and is characterized in that: it includes a side panel body, a water receiving pan, a pipe orifice limiting member and a pipe orifice pressing member, the water receiving pan is arranged on the inner side of the side panel body, the side panel body is provided with a first through hole for the pipe orifice of the heat pump system to pass through, the water receiving pan is provided with a second through hole matching the first through hole, the pipe orifice limiting member is arranged in the second through hole, and together with the second through hole, forms a pipe orifice limiting hole for limiting the pipe orifice of the heat pump system, the pipe orifice pressing member is arranged on the outer side of the side panel body, and the pipe orifice pressing member is provided with a pressing groove for pressing the pipe orifice of the heat pump system.

[0006] Compared with the prior art, the pipe orifice limiting device of the heat pump system of the present invention has a simple structure and is easy to assemble, which can improve the assembly efficiency of the heat pump system. Since the pipe orifice of the heat pump system is double-limited, its fixing effect is excellent.

[0007] In one embodiment, the nozzle clamp is in the shape of an elongated strip. The pressure groove is provided at one end of the nozzle clamp near the base plate of the heat pump system, with its opening facing the base plate of the heat pump system. The nozzle clamp is also provided at one end of the nozzle clamp near the base plate of the heat pump system with a snap-fit ​​opening in the same direction as the opening of the pressure groove. The outer side of the side panel body is provided with a hook that cooperates with the snap-fit ​​opening, and the snap-fit ​​is snapped onto the hook. When assembling the heat pump system, the nozzle clamp can be snapped onto the hook of the side panel body through the snap-fit ​​opening under the action of gravity, facilitating installation.

[0008] In one embodiment, the outer side of the nozzle clamp is further provided with an elongated lifting portion, which is located at the end of the nozzle clamp away from the bottom plate of the heat pump system. An operator can grasp the lifting portion to lift or press down the nozzle clamp, facilitating assembly.

[0009] In one embodiment, the inner sides of the side plate body are provided with protruding limiting portions, which are connected to each other to form a receiving cavity, and the water receiving tray is disposed in the receiving cavity. The limiting portions limit the position of the water receiving tray, further improving assembly efficiency.

[0010] In one embodiment, the side panel body further includes a drain port for passing a drain pipe from the heat pump system, and the water receiving tray includes a drain pipe hole that matches the drain port. The drain pipe from the heat pump system can sequentially pass through the drain pipe hole and the drain port to discharge wastewater to the outside.

[0011] In one embodiment, a water receiving trough is further provided on the inner side of the water receiving tray, and the drain pipe hole is provided in the water receiving trough. Water droplets formed by components in the heat pump system due to weather or temperature conditions can drip into the water receiving trough and be discharged to the outside through the drain pipe hole, thereby preventing water accumulation in the heat pump system from affecting normal operation.

[0012] In one embodiment, the nozzle stopper has a first curved portion opening toward the bottom plate of the heat pump system, and the edge of the second through-hole of the water receiving tray has a second curved portion opening toward the first curved portion. The first and second curved portions together form the nozzle stopper hole. The nozzle stopper hole formed by the first and second curved portions matches the outer circumference of the nozzle of the heat pump system, thereby improving the stability of the stopper hole.

[0013] In one embodiment, the side panel body further includes a first circuit through-hole for routing wiring of the heat pump system, and the water tray includes a second circuit through-hole that matches the first circuit through-hole. Wiring of the heat pump system can be routed through the first and second circuit through-holes to connect to external circuits, facilitating power supply.

[0014] In one embodiment, the water receiving tray and the nozzle stopper have an interference fit, and the nozzle clamping member covers the outside of the nozzle stopper. When the heat pump system is hung on a wall, the nozzle clamping member can prevent the nozzle stopper from detaching from the water receiving tray due to gravity, thereby improving the stability of the stopper.

[0015] In one embodiment, the present application also provides a heat pump system, including a shell, a heat exchange device, an electric heater, a water pump, an expansion water tank, a water inlet pipe, a water outlet pipe, a refrigerant inlet pipe, a refrigerant outlet pipe and a drain pipe, and the above-mentioned pipe mouth limiting device, the heat exchange device, the electric heater, the water pump, the expansion water tank, the water inlet pipe, the water outlet pipe, the refrigerant inlet pipe, the refrigerant outlet pipe and the drain pipe are accommodated in the shell, the pipe mouth of the refrigerant inlet pipe, the pipe mouth of the refrigerant outlet pipe, the pipe mouth of the water inlet pipe and the pipe mouth of the water outlet pipe are all arranged in the pipe mouth limiting hole of the pipe mouth limiting device, and the drain pipe is passed through the pipe mouth limiting device.

[0016] For better understanding and implementation, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a pipe orifice limiting device of a heat pump system in one embodiment of the present application;

[0018] Figure 2 This is a structural schematic diagram of a pipe orifice limiting device of a heat pump system in one embodiment of the present application from another perspective;

[0019] Figure 3 This is a schematic diagram of the exploded structure of a pipe orifice limiting device of a heat pump system in one embodiment of the present application;

[0020] Figure 4 This is a structural schematic diagram of a side plate main body of a pipe orifice limiting device of a heat pump system in one embodiment of the present application;

[0021] Figure 5 This is a structural schematic diagram of a water receiving tray of a pipe orifice limiting device of a heat pump system in one embodiment of the present application;

[0022] Figure 6 This is a structural schematic diagram of a pipe orifice pressing member of a pipe orifice limiting device of a heat pump system in one embodiment of the present application;

[0023] Figure 7 This is a schematic structural diagram of a heat pump system in one embodiment of the present application.

[0024] Numbers in the figure:

[0025] 1-side panel body, 2-water receiving tray, 3-pipe mouth limiting member, 4-pipe mouth pressing member, 5-pipe mouth limiting hole, 11-first through hole, 12-limiting part, 13-drain outlet, 14-first line through hole, 15-hook, 21-second through hole, 22-drain pipe through hole, 23-water receiving trough, 24-second line through hole, 25-second arc-shaped part, 31-first arc-shaped part, 41-pressing groove, 42-bayonet, 43-lifting part, 100-pipe mouth limiting device, 200-shell, 300-heat exchange device, 400-electric heater, 500-water pump, 600-expansion tank, A-refrigerant inlet pipe, B-refrigerant outlet pipe, C-water inlet pipe, D-water outlet pipe, E-drain pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. It is understood that the drawings are only provided for reference and illustration purposes and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field of this application. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. The terms used in this document in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0028] It should also be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Please also refer to Figures 1 to 3 , this embodiment provides a pipe orifice limiting device 100 of a heat pump system, which is used to be installed in conjunction with a shell 200 of the heat pump system, and includes a side panel body 1, a water receiving tray 2, a pipe orifice limiting member 3 and a pipe orifice pressing member 4. The water receiving tray 2 is arranged on the inner side of the side panel body 1, and the side panel body 1 is provided with a first through hole 11 for the pipe orifice of the heat pump system to pass through, and the water receiving tray 2 is provided with a second through hole 21 matching the first through hole 11, and the pipe orifice limiting member 3 is arranged in the second through hole 21, and together with the second through hole 21, forms a pipe orifice limiting hole 5 for limiting the pipe orifice of the heat pump system, and the pipe orifice pressing member 4 is arranged on the outer side of the side panel body 1, and the pipe orifice pressing member 4 is provided with a pressing groove 41 for pressing the pipe orifice of the heat pump system.

[0030] The side panel body 1 has a square structure, which has good stability. When assembled with other side panels of the heat pump system housing 200, it can withstand forces from all directions without easily deforming. In other embodiments, the side panel body 1 can also have a circular structure or a structure of other shapes. The side panel body 1 is stamped with a plurality of reinforcing ribs to strengthen the structure of the side panel body 1. In other embodiments, the side panel body 1 can also be reinforced by common methods such as welding reinforcing ribs to strengthen the overall structure.

[0031] The inner side of the side panel body 1 is provided with a limiting portion 12 protruding around it, and the limiting portions 12 are connected to each other to enclose a receiving cavity, and the water receiving tray 2 is provided in the receiving cavity. The limiting portion 12 limits the water receiving tray 2 to further improve the assembly efficiency. The water receiving tray 2 is made of foam material, specifically polyurethane foam, which has good thermal insulation, waterproof and processing properties. It can not only effectively prevent the penetration of condensed water, but also provide a certain thermal insulation effect, reduce heat loss, and can also be processed into the required shape. In another embodiment, the water receiving tray 2 can also be made of polystyrene foam or foam of other materials. In another embodiment, the water receiving tray 2 can also be made of plastic material. The water receiving tray 2 is fixed in the limiting cavity by liquid glue, which is convenient for assembly and fixation. In another embodiment, the water receiving tray 2 can also be fixed in the limiting cavity by fixing glue or interference fit.

[0032] The water receiving tray 2 is interference fit with the pipe mouth limiter 3, and the pipe mouth pressing member 4 covers the outside of the pipe mouth limiter 3. When the heat pump system is hung on the wall, the pipe mouth pressing member 4 can prevent the pipe mouth limiter 3 from detaching from the water receiving tray 2 under the action of gravity, thereby improving the limiting stability, and can also enhance the sealing of the shell 200 of the heat pump system, playing a protective role. The pipe mouth limiter 3 is made of foam material, and is not easy to scratch the pipe mouth when it cooperates with the water receiving tray 2 to limit the pipe mouth of the heat pump system, and the interference fit makes the fit more compact and the structural stability higher. In another embodiment, the pipe mouth limiter 3 can also be made of plastic material or other materials.

[0033] Please also refer to Figure 4 The side panel body 1 is also provided with a drain port 13 for the drain pipe of the heat pump system to pass through, and the water receiving tray 2 is provided with a drain pipe hole 22 that matches the drain port 13. The drain pipe of the heat pump system can pass through the drain pipe hole 22 and the drain port 13 in sequence to discharge waste water to the outside. Specifically, the diameter of the drain pipe hole 22 and the diameter of the drain port 13 are both larger than the outer diameter of the drain pipe of the heat pump system. After the drain pipe of the heat pump system passes through the drain pipe hole 22 and the drain port 13, a certain gap can be left so that water droplets in the heat pump system can flow out of the outside through the drain pipe hole 22 and the drain port 13 to prevent water droplets from accumulating. In another embodiment, the diameter of the drain pipe hole 22 and the diameter of the drain port 13 are both equal to the outer diameter of the drain pipe of the heat pump system, and the water receiving tray 2 and the side panel body 1 are also provided with a second drain hole specifically for discharging water received by the water receiving tray 2.

[0034] Please also refer to Figure 5, a water receiving trough 23 is further provided on the inner side of the water receiving tray 2, and the drain pipe through hole 22 is provided in the water receiving trough 23. Water droplets formed by the components in the heat pump system due to weather or temperature reasons can drip into the water receiving trough 23 and be discharged to the outside through the drain pipe through hole 22, thereby preventing water accumulation in the heat pump system from affecting normal operation. Specifically, the drain pipe through hole 22 is provided with a chamfer to facilitate the smooth flow of water droplets into the drain pipe through hole 22. In another embodiment, the bottom surface of the water receiving trough 23 is set at a certain inclination angle, and the drain hole through hole is located at the lowest point of the bottom surface of the water receiving trough 23.

[0035] The side panel body 1 also has a first circuit hole 14 for passing the heat pump system's wiring through it, and the water tray 2 has a second circuit hole 24 that matches the first circuit hole 14. The heat pump system's wiring can pass through the first and second circuit holes 14 to connect to external circuits, facilitating power supply. Specifically, a rubber sleeve is provided over the first circuit hole 14, which not only prevents the heat pump system's wiring from moving within the first circuit hole 14 but also provides protection, insulation, and waterproofing, thereby extending the service life of the wiring and the heat pump system.

[0036] Please also refer to Figure 6 The pipe nozzle clamping member 4 is in the shape of an elongated strip. The pressure groove 41 is provided at one end of the pipe nozzle clamping member 4 close to the bottom plate of the heat pump system, with its opening facing the bottom plate of the heat pump system. The pipe nozzle clamping member 4 is also provided at one end of the bottom plate of the heat pump system close to the bottom plate of the heat pump system with a bayonet 42 in the same direction as the opening of the pressure groove 41. The outer side of the side panel body 1 is provided with a hook 15 that cooperates with the bayonet 42, and the bayonet 42 is engaged with the hook 15. When assembling the heat pump system, the pipe nozzle clamping member 4 can be engaged with the hook 15 of the side panel body 1 through the bayonet 42 under the action of gravity, which is convenient for installation. In addition, the bayonet 42 cooperates with the hook 15 to play a positioning role, which facilitates the fixing of the pipe nozzle clamping member 4 to the side panel body 1. Preferably, the number of the bayonet 42 and the hook 15 is two pairs, the bayonet 42 is symmetrically arranged at both ends of the pipe mouth clamping member 4, and the hook 15 is symmetrically arranged at both ends of the side panel body 1. In other embodiments, the number of the bayonet 42 and the hook 15 can also be 3 pairs, 4 pairs or other numbers. The side panel body 1 and the pipe mouth clamping member 4 are fixed by screw connection. In other embodiments, the side panel body 1 and the pipe mouth clamping member 4 can also be fixed by block slots or other common connection methods.

[0037] The outer side of the nozzle clamping member 4 is also provided with a long strip-shaped lifting portion 43, and the lifting portion 43 is provided at one end of the nozzle clamping member 4 away from the bottom plate of the heat pump system. The operator can grasp the lifting portion 43 with his hands to lift or press down the nozzle clamping member 4 to facilitate assembly. Specifically, the lifting portion 43 is parallel to the length direction of the nozzle clamping member 4, which is more ergonomic, allowing the operator to maintain a natural and comfortable posture during operation, making it easier to apply force. In another embodiment, the lifting portion 43 can also be a block structure, symmetrically arranged at the left and right ends of the nozzle clamping member 4.

[0038] The nozzle stopper 3 has a first curved portion 31 opening toward the bottom plate of the heat pump system. The edge of the second through hole 21 of the water receiving tray 2 has a second curved portion 25 opening toward the first curved portion 31. The first curved portion 31 and the second curved portion 25 together form the nozzle stopper hole 5. The nozzle stopper hole 5 formed by the first curved portion 31 and the second curved portion 25 matches the outer periphery of the nozzle of the heat pump system, improving the stability of the stopper hole.

[0039] The assembly process of the pipe mouth limiting device 100 of the present application is as follows: the water receiving tray 2 is pre-pasted and fixed to the inner side of the side panel body 1, and then the first through hole 11 of the side panel body 1 is aligned with the pipe mouth of the heat pump system, and after being inserted therein, the side panel body 1 is fixed to the bottom plate of the heat pump system, and the pipe mouth limiting member 3 is pushed into the second through hole 21 of the water receiving tray 2 from the outside of the side panel body 1, and interference fits with the second through hole 21, and finally the pipe mouth pressing member 4 is vertically clamped into the hook 15 of the side panel body 1 through the bayonet 42 from the top of the side panel body 1, and then fixed to the outside of the side panel body 1 by screw connection.

[0040] See also Figure 7The present application also provides a heat pump system, including a shell 200, a heat exchange device 300, an electric heater 400, a water pump 500, an expansion water tank 600, a refrigerant inlet pipe A, a refrigerant outlet pipe B, a water inlet pipe C, a water outlet pipe D and a drain pipe E, and the above-mentioned pipe mouth limiting device 100, the heat exchange device 300, the electric heater 400, the water pump 500, the expansion water tank 600, the refrigerant inlet pipe A, the refrigerant outlet pipe B, the water inlet pipe C, the water outlet pipe D and the drain pipe E are accommodated in the shell 200, the pipe mouth of the refrigerant inlet pipe A, the pipe mouth of the refrigerant outlet pipe B, the pipe mouth of the water inlet pipe C and the pipe mouth of the water outlet pipe D are all arranged in the pipe mouth limiting hole 5 of the pipe mouth limiting device 100, and the drain pipe E is passed through the pipe mouth limiting device 100. Specifically, the heat exchange device 300 and the water pump 500 are arranged on one side of the water inlet pipe C, and are arranged in sequence along the length direction of the water inlet pipe C toward its pipe mouth. The electric heater 400 and the expansion water tank 600 are arranged on the other side of the water inlet pipe C, and are arranged in sequence along the length direction of the water inlet pipe C toward its pipe mouth. The electric heater 400 is arranged above the expansion water tank 600; the water outlet pipe D is located on the same side as the water pump 500, the refrigerant inlet pipe A and the refrigerant outlet pipe B are located on the same side as the electric heater 400, and the water outlet pipe D is connected to the water outlet of the water pump 500; the water flows through the water inlet pipe C, the heat exchange device 300, the electric heater 400, the water pump 500 and the water outlet pipe D in sequence, and the expansion water tank 600 is connected to the heat exchange device 300 and the electric heater 400. The openings of the refrigerant inlet pipe A, the refrigerant outlet pipe B, the water inlet pipe C, and the water outlet pipe D are sequentially arranged along the length of the side panel body 1, and the drain pipe E is passed through the drain pipe through-hole 22 and the drain port 13. By optimizing the layout of the heat exchange device 300, electric heater 400, water pump 500, expansion tank 600, water inlet pipe C, water outlet pipe D, refrigerant inlet pipe A, and refrigerant outlet pipe B within the housing 200, the entire structure is made more compact, the housing 200 is smaller, and the number of consumable pipes used to connect the various components is reduced, thereby reducing costs and increasing efficiency.

[0041] The specific examples described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe orifice limiting device for a heat pump system, used for installation in conjunction with a housing of the heat pump system, characterized by: It includes a side panel body, a water receiving pan, a pipe mouth limiting piece and a pipe mouth pressing piece. The water receiving pan is arranged on the inner side of the side panel body. The side panel body is provided with a first through hole for the pipe mouth of the heat pump system to pass through. The water receiving pan is provided with a second through hole matching the first through hole. The pipe mouth limiting piece is arranged in the second through hole and enclosed with the second through hole to form a pipe mouth limiting hole for limiting the pipe mouth of the heat pump system. The pipe mouth pressing piece is arranged on the outer side of the side panel body. The pipe mouth pressing piece is provided with a pressing groove for pressing the pipe mouth of the heat pump system.

2. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: The pipe mouth clamping piece is in the shape of a long strip, and the pressing groove is arranged at one end of the pipe mouth clamping piece close to the base plate of the heat pump system, and its opening faces the base plate of the heat pump system. The pipe mouth clamping piece is also provided with a bayonet in the same direction as the opening of the pressing groove at one end close to the base plate of the heat pump system, and a hook is provided on the outer side of the side panel body to cooperate with the bayonet, and the bayonet is clamped to the hook.

3. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: An elongated lifting portion is further provided on the outer side of the pipe mouth pressing member, and the lifting portion is provided at one end of the pipe mouth pressing member away from the bottom plate of the heat pump system.

4. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: Limiting parts are protruded from the inner sides of the side plate body, and the limiting parts are connected to each other to form a receiving cavity, and the water receiving tray is arranged in the receiving cavity.

5. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: The side plate body is also provided with a drainage port for the drainage pipe of the heat pump system to pass through, and the water receiving tray is provided with a drainage pipe through hole matching the drainage port.

6. The pipe orifice limiting device of the heat pump system according to claim 5, characterized in that: A water receiving trough is further provided on the inner side of the water receiving tray, and the drain pipe through hole is provided in the water receiving trough.

7. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: The pipe mouth limiting member is provided with a first arc-shaped portion opening toward the bottom plate of the heat pump system, and the edge of the second through hole of the water receiving tray is provided with a second arc-shaped portion opening toward the first arc-shaped portion, and the first arc-shaped portion and the second arc-shaped portion together form the pipe mouth limiting hole.

8. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: The side plate body is further provided with a first circuit through-hole for passing a circuit of a heat pump system, and the water receiving tray is provided with a second circuit through-hole matching the first circuit through-hole.

9. The pipe orifice limiting device of the heat pump system according to claim 1, characterized in that: The water receiving tray is interference-fitted with the pipe mouth limiting piece, and the pipe mouth pressing piece covers the outer side of the pipe mouth limiting piece.

10. A heat pump system, characterized in that: It includes a shell, a heat exchange device, an electric heater, a water pump, an expansion water tank, a water inlet pipe, a water outlet pipe, a refrigerant inlet pipe, a refrigerant outlet pipe and a drain pipe, and a pipe mouth limiting device as described in any one of claims 1 to 9, the heat exchange device, the electric heater, the water pump, the expansion water tank, the water inlet pipe, the water outlet pipe, the refrigerant inlet pipe, the refrigerant outlet pipe and the drain pipe are accommodated in the shell, the pipe mouth of the refrigerant inlet pipe, the pipe mouth of the refrigerant outlet pipe, the pipe mouth of the water inlet pipe and the pipe mouth of the water outlet pipe are all arranged in the pipe mouth limiting hole of the pipe mouth limiting device, and the drain pipe is passed through the pipe mouth limiting device.

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