Heat pump water heater

Abstract

The utility model relates to a heating and ventilation equipment technical field discloses a kind of heat pump water heater, including box, heat exchange subassembly and electric control component, at least one side plate of box is detachable to form maintenance opening, installation plate is provided in maintenance opening opposite in accommodating cavity, heat exchange subassembly and electric control component are located in accommodating cavity and located the side of installation plate towards maintenance opening, heat exchange subassembly includes first heat exchanger and the water inlet pipe connected with it, water inlet of water inlet pipe is located on a side plate, filter component is equipped on water inlet pipe, filter component includes filter valve body and the handle connected with it, the interval of filter valve body and water inlet is greater than the length of handle. The utility model is by being located the side of installation plate towards maintenance opening to heat exchange subassembly and electric control component, it is convenient to dismount and repair to both, while, handle avoidance space is set for the convenience of maintenance of filter component, overall improve heat exchange subassembly, electric control component and the maintenance convenience and efficiency of filter component, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning equipment technology, and in particular to a heat pump water heater. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] The electrical control components and heat exchange components of existing heat pump water heaters are all surrounded by the casing. Due to the small operating space inside the casing and the mutual obstruction between the electrical control components and the heat exchange components, disassembly and maintenance become inconvenient. Utility Model Content

[0004] The purpose of this invention is to at least solve the problem of inconvenience in disassembling and maintaining the electronic control components and heat exchange components. This purpose is achieved through the following technical solution: The first aspect of this utility model discloses a heat pump water heater, comprising: The housing includes multiple side panels connected end to end, which surround a receiving cavity. At least one of the side panels is detachable to form a maintenance port. The receiving cavity is provided with a mounting plate opposite to the maintenance port. A heat exchange assembly is disposed within the receiving cavity and located on the side of the mounting plate facing the maintenance port. The heat exchange assembly includes a first heat exchanger and a water inlet pipe connected to the first heat exchanger. The water inlet of the water inlet pipe is located on a side plate adjacent to the maintenance port. A filter assembly is provided on the water inlet pipe. The filter assembly includes a filter valve body and a handle connected to the filter valve body. The distance between the filter valve body and the water inlet is greater than the length of the handle. An electrical control component is disposed within the receiving cavity and positioned above the heat exchange component along a first direction, with the electrical control component located on the side of the mounting plate facing the maintenance port, the first direction being the direction of gravity.

[0005] This utility model's heat pump water heater features a detachable side panel forming a maintenance port facing the mounting plate. The heat exchange components and electrical control components are centrally mounted on the side of the mounting plate facing the maintenance port, arranged in a layered layout. This compact layout reduces obstruction between the components. During maintenance, the side panel can be directly removed, exposing the heat exchange and electrical control components through the maintenance port. The components closest to the maintenance port can be directly disassembled and repaired. Furthermore, by setting the distance between the filter valve body 41 and the water inlet 24 to be greater than the length of the handle 42, the handle 42 is ensured to rotate or move without obstruction from the water inlet 24, providing ample swing space. This allows maintenance personnel to easily grip the handle 42 for operation, facilitating convenient maintenance of the filter component 4 without additional disassembly of other parts. This improves the operational flexibility and maintenance efficiency of the filter component 4, and overall enhances the ease and efficiency of maintenance for the heat exchange component 2, electrical control component 3, and filter component 4, reducing operational difficulty and increasing work efficiency.

[0006] In addition, the heat pump water heater according to this utility model may also have the following additional technical features: In some embodiments of this utility model, the heat exchange assembly further includes a water outlet pipe connected to the first heat exchanger. The water inlet pipe and the water outlet pipe are respectively disposed below the electrical control assembly along the first direction. The water outlet of the water outlet pipe is disposed on a side plate adjacent to the maintenance port. The water inlet and the water outlet are respectively configured to be connected to an external pipeline.

[0007] In some embodiments of this utility model, the filter valve body includes: The outer casing is provided with a limiting part; A filter assembly is connected inside the housing, and the filter assembly is provided with a limiting engagement part that cooperates with the limiting part; A connector is inserted into the limiting part and the limiting mating part to connect the housing and the filter assembly.

[0008] In some embodiments of this utility model, the bottom of the outer shell is provided with an installation port, the filter assembly includes a base and a filter screen disposed on the base, the base is inserted into the outer shell through the installation port, the outer shell is provided with a limiting hole, the base is provided with a slot, and the connector is inserted into the limiting hole and the slot.

[0009] In some embodiments of this utility model, a water pressure detection device is provided on the water inlet pipe, which is used to detect the water pressure in the water inlet pipe.

[0010] In some embodiments of this utility model, the water outlet pipe is provided with a water flow detection device, which is used to detect the water flow rate in the water outlet pipe.

[0011] In some embodiments of this utility model, a safety valve is provided on the water outlet pipe, which is used to automatically release pressure when the pressure in the water outlet pipe exceeds a set value.

[0012] In some embodiments of this utility model, both the inlet pipe and the outlet pipe are straight pipes; and / or, The inlet pipe and the outlet pipe are spaced apart along the first direction; and / or, The inlet pipe and the outlet pipe extend along a second direction, which is perpendicular to the first direction.

[0013] In some embodiments of this utility model, the heat pump water heater further includes a heat exchange auxiliary circuit and a second heat exchanger, one end of which is connected to the first heat exchanger and the other end of which is connected to the second heat exchanger.

[0014] In some embodiments of this utility model, the heat exchange auxiliary circuit includes a first pipe segment, a second pipe segment, and a third pipe segment located below the electronic control component along the first direction and connected end to end. The first pipe segment is connected to the first heat exchanger. Along the first direction, the third pipe segment is located above the first pipe segment. The first pipe segment is closer to the first heat exchanger than the filter component. The height of the third pipe segment along the first direction is higher than the height of the filter component. The first pipe segment and the third pipe segment are parallel to the water inlet pipe. The second pipe segment is perpendicular to the first pipe segment and the third pipe segment. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of a heat pump water heater according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of a heat pump water heater (with the first side panel hidden) according to an embodiment of the present invention is shown. Figure 3 A schematic diagram of a heat pump water heater (with the first and second side plates hidden) according to an embodiment of the present invention is shown. Figure 4 An exploded view of the filter valve of a heat pump water heater according to an embodiment of the present invention is shown schematically. Figure 5 A side view of the filter valve of a heat pump water heater according to an embodiment of the present invention is shown schematically. Figure 6 for Figure 5 Sectional view at point AA.

[0016] The attached figures are labeled as follows: 100. Heat pump water heater; 1. Enclosure; 11. First side panel; 12. Maintenance port; 13. Second side panel; 14. Mounting plate; 2. Heat exchange assembly; 21. First heat exchanger; 22. Inlet pipe; 23. Outlet pipe; 24. Inlet; 25. Outlet; 26. Auxiliary heat exchange circuit; 261. First pipe section; 262. Second pipe section; 263. Third pipe section; 27. Second heat exchanger; 3. Electrical control components; 31. Electrical control box; 32. Electrical control devices; 4. Filter assembly; 41. Filter valve body; 411. Housing; 4111. Limiting hole; 412. Base; 4121. Slot; 413. Filter screen; 414. Connector; 42. Handle; 43. Seal; 5. Chassis; 6. Water pressure testing equipment; 7. Water flow detection components; 8. Safety valve; X, first direction; Y, the second direction. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0021] like Figures 1 to 6 As shown, according to an embodiment of the present invention, a heat pump water heater 100 is proposed, including a housing 1, a heat exchange component 2, and an electrical control component 3.

[0022] The housing 1 includes multiple side panels connected end-to-end, forming a receiving cavity. At least one side panel is detachable, defined as the first side panel 11. The first side panel 11 is connected to adjacent side panels via snap-fit ​​connections, screw connections, or sliding structure connections. After disassembly, the first side panel 11 forms a maintenance port 12, allowing maintenance personnel to access the internal components of the housing 1, effectively increasing the operating space and facilitating subsequent disassembly, assembly, and maintenance. A sealing structure can be provided at the maintenance port 12 to improve the airtightness of the housing 1, preventing external dust and moisture from entering and affecting the normal operation of the heat pump water heater 100. The sealing structure can be a sealing strip, etc. An installation plate 14 is provided inside the receiving cavity, opposite to the maintenance port 12. The installation plate 14 provides a stable support base for the heat exchange components and electrical control components, and enables quick assembly and disassembly of the components through preset mounting holes or guide rail structures.

[0023] The heat exchange assembly 2 is located within the receiving cavity, positioned on the side of the mounting plate 14 facing the maintenance port 12. This proximity allows maintenance personnel to easily disassemble, inspect, or repair the heat exchange assembly 2. The heat exchange assembly 2 includes a first heat exchanger 21 and an inlet pipe 22 connected to the first heat exchanger 21. The side plate adjacent to the maintenance port 12 is defined as the second side plate 13. The inlet 24 of the inlet pipe 23 is located on the second side plate 13. A filter assembly 4 is mounted on the inlet pipe 22. The filter assembly 4 includes a filter valve body 41 and a handle 42 connected to the filter valve body 41. The filter valve body 41 has an internal flow channel for water flow. One end of the flow channel is connected to the inlet 24, and the other end is connected to the outlet 25. The medium enters the flow channel from the inlet 24, is filtered, and then flows out from the outlet 25. The handle 42 is connected to the filter valve body 41 and is used to control the opening and closing of the filter assembly 4. The distance between the filter valve body 41 and the inlet 24 is greater than the length of the handle 42, ensuring that the handle 42 is not obstructed by the inlet 24 when rotating or moving. The handle 42 has sufficient swing space, allowing maintenance personnel to easily grip it and complete operations, thus improving the convenience of maintenance. For example, when maintenance personnel need to shut down the filter assembly 4 for inspection, the handle 42 can be smoothly rotated to the closed position without being jammed due to being too close to the inlet 24.

[0024] The electrical control assembly 3 is located within the receiving cavity, positioned above the cavity along the first direction X, and on the side of the mounting plate 14 facing the maintenance port 12. The electrical control assembly 3 includes an electrical control box 31 and electrical control devices 32 disposed within the box 31. The box 31 includes a body and a cover connected to the body, the cover being openable and closable. Positioning the electrical control assembly 3 above and near the maintenance port 12 allows maintenance personnel to easily and quickly access the assembly 3 while operating through the maintenance port 12, enabling them to disassemble, test, or repair the electrical control devices 32 within the box 31. Furthermore, the electrical control assembly 3 and the heat exchange assembly 2 are arranged in layers vertically, preventing mutual obstruction and further improving maintenance convenience.

[0025] The heat pump water heater 100 of this utility model forms a maintenance port 12 facing the mounting plate through a detachable side plate. The heat exchange component 2 and the electrical control component 3 are centrally installed on the side of the mounting plate 14 facing the maintenance port 12 and arranged in a vertical layer. The layout is compact and reduces obstruction between the two. During maintenance, the side plate can be directly removed to expose the heat exchange component 2 and the electrical control component 3 through the maintenance port 12. The heat exchange component 2 and the electrical control component 3 near the maintenance port 12 can be directly disassembled and repaired. It can be quickly and independently disassembled or repaired without complicated disassembly. At the same time, by setting the distance between the filter valve body 41 and the water inlet 24 to be greater than the length of the handle 42, it is ensured that the handle 42 is not obstructed by the water inlet 24 when rotating or moving, providing it with sufficient swing space. This allows maintenance personnel to easily hold the handle 42 for operation. The filter component 4 can be conveniently maintained without additional disassembly of other parts, improving the flexibility of operation and maintenance efficiency of the filter component 4. Overall, it improves the convenience and efficiency of maintenance of the heat exchange component 2, the electrical control component 3 and the filter component 4, reduces the difficulty of operation and improves work efficiency.

[0026] In some embodiments of this utility model, the heat exchange assembly 2 further includes an outlet pipe 23 connected to the first heat exchanger 21, the inlet pipe 22 and the outlet pipe 23 are respectively located below the electrical control assembly 3, the outlet 25 of the outlet pipe 23 is located on the side plate adjacent to the maintenance port 12, and the inlet 24 and the outlet 25 are respectively configured to be connected to the external pipeline.

[0027] like Figures 1 to 3 As shown, the first heat exchanger 21 is a plate heat exchanger. Plate heat exchangers have advantages such as high-efficiency heat exchange, compact structure, and high flexibility, which improves the heat exchange efficiency and working performance of the heat pump water heater 100, while reducing the equipment volume and improving space utilization. The inlet 24 of the inlet pipe 22 is located on the second side plate 13 and extends along the second direction Y. The second direction Y is perpendicular to the first direction, i.e., the second direction Y is a horizontal direction perpendicular to the first direction. The inlet 24 is the inlet for external cold water, used to introduce cold water from the external pipeline into the first heat exchanger 21. The outlet 25 of the outlet pipe 23 is located on the second side plate 13 and extends along the second direction Y. The outlet 25 is the outlet for the hot water after heat exchange, used to transport the hot water heated in the first heat exchanger 21 to the external water user. By concentrating the inlet 24 and outlet 25 on the second side plate 13 adjacent to the maintenance port 12, maintenance personnel can quickly connect or disconnect external pipelines without disassembling other internal components of the housing 1, thus shortening maintenance time.

[0028] In some embodiments of this utility model, the filter valve body 41 includes a housing 411, a filter assembly, and a connector 414. The housing 411 has a limiting part, the filter assembly is connected inside the housing 411, and the filter assembly has a limiting mating part that cooperates with the limiting part. The connector 414 is inserted into the limiting part and the limiting mating part to connect the housing 411 and the filter assembly. By setting the limiting part and the limiting mating part, the filter assembly can be accurately aligned with the preset position inside the housing 411 during installation, avoiding problems such as decreased filtration efficiency or media leakage caused by filter assembly misalignment. The tight cooperation between the limiting part and the limiting mating part, combined with the fixing effect of the connector 414, can effectively prevent media leakage from the gap between the housing 411 and the filter assembly. The connector 414 firmly connects the housing 411 and the filter assembly, preventing the filter assembly from loosening, falling off, or shifting during high-speed media flow or operation, and ensuring the overall structural stability of the filter assembly 4. When the filter assembly needs to be cleaned or replaced, simply disassemble the connector 414 to remove the filter assembly from the housing 411, which shortens maintenance time and reduces maintenance difficulty.

[0029] In some embodiments of this utility model, the bottom of the outer shell 411 is provided with an installation port, the filter assembly includes a base 412 and a filter screen 413 disposed on the base 412, the base 412 is inserted into the outer shell 411 through the installation port, the outer shell 411 is provided with a limiting hole 4111, the base 412 is provided with a slot 4121, and the connector 414 is sequentially inserted into the limiting hole 4111 and the slot 4121.

[0030] like Figures 4 to 6 As shown, the bottom of the housing 411 has a mounting port, which facilitates the installation and removal of the filter assembly 4 from the bottom by maintenance personnel. The base 412 is the supporting structure for the filter screen 413, and is usually made of metal (such as stainless steel) or high-strength plastic. Its bottom has a contour (such as round or square) that matches the mounting port of the housing 411, ensuring precise alignment with the mounting port at the bottom of the housing 411 during installation. The end of the base 412 facing the housing 411 has a mounting boss. The filter screen 413 is cylindrical and is fixed on the mounting boss. The mounting boss has a slot 4121. The connector 414 is a U-shaped pin, one end of which passes through the limiting hole 4111 of the housing 411, and the other end is inserted into the slot 4121 of the base 412. The U-shaped pin is clearance-fitted with the limiting hole 4111 and the slot 4121, so that no force is required during the pulling process, thus avoiding damage to the filter valve body 41 or the base 412. The vertical movement of the base 412 is restricted by the limiting hole 4111, and the horizontal movement of the base 412 is prevented by the slot 4121, thus ensuring that the filter assembly will not loosen or shift during use.

[0031] When the filter needs cleaning, insert a screwdriver into the open end of the U-shaped pin and gently pull it outwards. After the U-shaped pin is released from the limiting structure, the base 412 loses its fixed constraint, and the base 412 can be removed downwards. At this time, the filter 413 is removed along with the base 412 and can be cleaned. After cleaning, align the base 412 with the mounting port at the bottom of the housing 411 and insert it upwards into the filter valve body 41, so that the slot 4121 is aligned with the limiting hole 4111. Then insert the U-shaped pin into the limiting hole 4111 and the slot 4121 and push it inwards until the U-shaped pin is fully inserted, thus completing the installation.

[0032] This embodiment also includes a sealing element 43, which includes a sealing ring. The sealing ring is installed on the base and is used to seal the gap between the base 412 and the outer shell 411 to prevent external dust, moisture, impurities, etc. from entering the filter valve body 41 and to prevent internal media leakage, thus ensuring the normal operation and service life of the equipment.

[0033] In this embodiment, a chassis 5 is also included, and the distance between the filter assembly 4 and the chassis 5 is greater than the filter assembly's disassembly / removal stroke. The filter assembly / removal stroke is the minimum vertical movement distance required for the filter assembly to move from being fully inserted into the filter valve body 41 to being fully removed. If the vertical distance between the ball valve and the chassis 5 is less than the filter assembly / removal stroke, the filter screen cannot be completely removed from the ball valve, making effective cleaning or replacement impossible. The vertical distance between the filter assembly 4 and the chassis 5 is greater than the filter assembly / removal stroke, satisfying the space requirements for filter maintenance, avoiding maintenance difficulties caused by insufficient space, and ensuring the long-term operation of the filter assembly 4.

[0034] In some embodiments of this utility model, a water pressure detection element 6 is provided on the water inlet pipe 22, which is used to detect the water pressure in the water inlet pipe 22.

[0035] like Figure 2 As shown, the water pressure detection component 6 is a water pressure sensor, which is installed between the filter assembly 4 and the first heat exchanger 21. Since the water after the filter assembly 4 has undergone preliminary purification and has a low impurity content, it avoids local high-pressure interference caused by impurities before filtration. The flow state of the medium after the filter assembly 4 is more stable and the pressure distribution is more uniform. The water pressure sensor monitors this point, improving the accuracy of the detection. The water pressure sensor transmits the monitored pressure signal to the control system, such as a PLC or frequency converter. The control system adjusts the water pressure according to the detected pressure signal. When the inlet pressure drops, the system automatically starts the water pump to increase the pressure or adjusts the water pump speed to ensure that the inlet pressure of the first heat exchanger 21 is stable within the rated range, ensuring heat exchange efficiency. When the inlet pressure is too high, the system stops the water pump or opens the pressure relief valve to prevent the pressure from continuing to rise. By setting up a water pressure sensor, the system operating efficiency can be improved, while reducing the energy consumption of the water pump operating under overload for a long time.

[0036] In some embodiments of this utility model, a water flow detection element 7 is provided on the water outlet pipe 23, which is used to detect the water flow rate in the water outlet pipe 23.

[0037] like Figure 2 As shown, the water flow detection component 7 is a water flow sensor, which is installed on the outlet pipe 23. The water flow sensor monitors the flow rate changes in the outlet pipe 23 in real time and transmits the signal to the control system. The control system adjusts the compressor speed according to the flow rate to achieve precise flow regulation, ensuring that the heating power matches the water flow demand and guaranteeing a stable outlet water temperature. In addition, by monitoring for abnormal flow rates, such as when a flow interruption or flow rate below a safe threshold is detected, a signal is immediately sent to the control system to forcibly stop the operation of components such as the compressor and water pump, cut off the heat source, and prevent safety accidents.

[0038] In some embodiments of this utility model, a safety valve 8 is provided on the water outlet pipe 23. The safety valve 8 is used to automatically release pressure when the pressure in the water outlet pipe 23 exceeds a set value.

[0039] like Figure 2 As shown, safety valve 8 is installed between the water flow sensor and the first heat exchanger 21. Since the water flow sensor detects the water flow status in the outlet pipe 23, its downstream pipes, including the first heat exchanger 21 and terminal water-using equipment, need to maintain stable pressure. If overpressure occurs in the first heat exchanger 21 or downstream pipes, the water flow sensor may be damaged due to excessive pressure, leading to abnormal water flow signals and affecting the judgment of the heat pump control system. Therefore, placing safety valve 8 upstream of the water flow sensor allows for timely pressure relief when pressure abnormally rises, thus isolating the overpressure from affecting the downstream pipes of the water flow sensor and ensuring the safe operation of the water flow sensor and downstream equipment. When the pressure in the outlet pipe 23 exceeds a preset safety value, safety valve 8 automatically opens to relieve pressure, reducing the pressure to a safe range. When the pressure returns to normal, safety valve 8 automatically closes, stopping pressure relief, thereby ensuring the safe operation of the outlet pipe 23 and connected equipment, and improving system stability and reliability.

[0040] In some embodiments of this utility model, the inlet pipe 22 and the outlet pipe 23 are both straight pipes; and / or, the inlet pipe 22 and the outlet pipe 23 are spaced apart along the first direction X; and / or, the inlet pipe 22 and the outlet pipe 23 extend along the second direction Y, the second direction Y being perpendicular to the first direction X.

[0041] It should be noted that "and / or" represents three different scenarios: Scenario 1: Both inlet pipe 22 and outlet pipe 23 are straight pipes; Scenario 2: Inlet pipe 22 and outlet pipe 23 are spaced apart along the first direction X; Scenario 3: Inlet pipe 22 and outlet pipe 23 extend along the second direction Y, which is perpendicular to the first direction X. These three scenarios can exist individually, or any two or all three can exist simultaneously. In this embodiment, all three scenarios exist simultaneously: both inlet pipe 22 and outlet pipe 23 are straight pipes, both are spaced apart along the first direction X, and both extend along the second direction Y, which is perpendicular to the first direction X.

[0042] Specifically, such as Figure 2 and Figure 3 As shown, both the inlet pipe 22 and the outlet pipe 23 are designed as straight pipes, meaning the pipe body has no bends or angles and is perfectly straight. This ensures that the water flows in a straight line within the pipe, reducing the water flow resistance caused by pipe bends. On one hand, this reduces energy loss from water flow within the pipe, allowing power equipment such as water pumps to work more efficiently, reducing energy waste and improving the overall energy efficiency of the heat pump water heater 100. On the other hand, the straight pipe structure is relatively simple, facilitating maintenance and inspection.

[0043] The first direction X is defined as the first direction, and the inlet pipe 22 and outlet pipe 23 are set along this direction with a certain distance between them. That is, in the vertical direction, the inlet pipe 22 and outlet pipe 23 will not be close to or overlap each other, but rather have a certain spatial separation. This spacing avoids mutual interference between the inlet pipe 22 and outlet pipe 23, effectively reducing heat exchange between different pipes, ensuring relatively stable inlet and outlet water temperatures, and thus improving the heat exchange efficiency of the heat pump water heater 100. Furthermore, the spacing also provides maintenance personnel with more operating space. When maintenance is required on the inlet pipe 22 or outlet pipe 23, the close proximity of the two pipes will not increase the difficulty of operation, reducing the complexity of maintenance.

[0044] The second direction Y is perpendicular to the first direction X, meaning the second direction Y is horizontal. The inlet pipe 22 and outlet pipe 23 extend horizontally, which better adapts to the internal space layout of the housing 1, making the internal structure of the entire heat pump water heater 100 more compact and rational, and improving space utilization. At the same time, the horizontal pipe layout also helps reduce the impact of gravity on water flow, ensuring the uniformity and stability of the water flow.

[0045] In some embodiments of this utility model, the heat pump water heater 100 further includes a heat exchange auxiliary path 26 and a second heat exchanger 27. One end of the heat exchange auxiliary path 26 is connected to the first heat exchanger 21, and the other end of the heat exchange auxiliary path 26 is connected to the second heat exchanger 27.

[0046] like Figure 3 As shown, the second heat exchanger 27 is located within the housing cavity, making full use of the space within the cavity and avoiding extensive external piping. This makes the overall structure of the heat pump water heater 100 more compact, reduces the equipment's footprint, and improves space utilization. One end of the heat exchange auxiliary circuit 26 is connected to the first heat exchanger 21, and the other end is connected to the second heat exchanger 27. Through this connection, the medium in the first heat exchanger 21 can be transported to the second heat exchanger 27 via the heat exchange auxiliary circuit 26, achieving further heat transfer and utilization.

[0047] In some embodiments of this utility model, the heat exchange auxiliary path 26 includes a first pipe section 261, a second pipe section 262, and a third pipe section 263 located below the electronic control component 3 along the first direction X and connected end to end. The first pipe section 261 is connected to the first heat exchanger 21. Along the first direction X, the third pipe section 263 is located above the first pipe section 261. The first pipe section 261 is closer to the first heat exchanger 21 than the filter component 4. The height of the third pipe section 263 along the first direction X is higher than the height of the filter component 4. The first pipe section 261 and the third pipe section 263 are parallel to the water inlet pipe 22. The second pipe section 262 is perpendicular to the first pipe section 261 and the third pipe section 263.

[0048] like Figure 2 and Figure 3 As shown, the first pipe section 261 is located below the electrical control component 3 and is directly connected to the first heat exchanger 21. It is parallel to the water inlet pipe 22, that is, it is set horizontally close to the chassis 5 to avoid occupying the upper space. The second pipe section 262 is perpendicular to the first pipe section 261 and the third pipe section 263. The second pipe section 262 is used to connect the first pipe section 261 and the third pipe section 263. By setting the vertical bend of the second pipe section 262, and because the first pipe section 261 is closer to the first heat exchanger 21 relative to the filter assembly 4, and the height of the third pipe section 263 along the first direction X is higher than the height of the filter assembly 4, a clearance space is formed for the operation of the filter assembly 4, avoiding the pipes from obstructing or interfering with the filter assembly 4. This allows for a reasonable layout of the pipes within a limited space, thereby improving the operating space and flexibility of the filter assembly 4 during disassembly, assembly, and maintenance. In addition, the connection between the filter assembly 4 and the inlet pipe 22 is usually made by using a union nut. The right-angle bend structure formed by the second pipe section 262 provides the wrench with sufficient operating radius when installing and removing the union nut, facilitating the disassembly and assembly of the filter assembly 4 and improving the maintenance convenience and space rationality of the heat pump water heater 100. The third pipe section 263 is located above the first pipe section 261 along the first direction X, and the third pipe section 263 is parallel to the first pipe section 261, making the pipeline layout more orderly, improving the utilization rate of the internal space of the box 1, and facilitating installation and maintenance.

[0049] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A heat pump water heater, characterized in that, include: The housing includes multiple side panels connected end to end, which surround a receiving cavity. At least one of the side panels is detachable to form a maintenance port. The receiving cavity is provided with a mounting plate opposite to the maintenance port. A heat exchange assembly is disposed within the receiving cavity and located on the side of the mounting plate facing the maintenance port. The heat exchange assembly includes a first heat exchanger and a water inlet pipe connected to the first heat exchanger. The water inlet of the water inlet pipe is located on a side plate adjacent to the maintenance port. A filter assembly is provided on the water inlet pipe. The filter assembly includes a filter valve body and a handle connected to the filter valve body. The distance between the filter valve body and the water inlet is greater than the length of the handle. An electrical control component is disposed within the receiving cavity and positioned above the heat exchange component along a first direction, with the electrical control component located on the side of the mounting plate facing the maintenance port, the first direction being the direction of gravity.

2. The heat pump water heater according to claim 1, characterized in that, The heat exchange assembly also includes a water outlet pipe connected to the first heat exchanger. The water inlet pipe and the water outlet pipe are respectively located below the electrical control assembly along the first direction. The water outlet of the water outlet pipe is located on a side plate adjacent to the maintenance port. The water inlet and the water outlet are respectively configured to be connected to external pipelines.

3. The heat pump water heater according to claim 1, characterized in that, The filter valve body includes: The outer casing is provided with a limiting part; A filter assembly is connected inside the housing, and the filter assembly is provided with a limiting engagement part that cooperates with the limiting part; A connector is inserted into the limiting part and the limiting mating part to connect the housing and the filter assembly.

4. The heat pump water heater according to claim 3, characterized in that, The bottom of the housing is provided with an installation port. The filter assembly includes a base and a filter screen disposed on the base. The base is inserted into the housing through the installation port. The housing is provided with a limiting hole. The base is provided with a slot. The connector is inserted into the limiting hole and the slot.

5. The heat pump water heater according to claim 1, characterized in that, The water inlet pipe is equipped with a water pressure detection device, which is used to detect the water pressure in the water inlet pipe.

6. The heat pump water heater according to claim 2, characterized in that, The water outlet pipe is equipped with a water flow detection device, which is used to detect the water flow rate in the water outlet pipe.

7. The heat pump water heater according to claim 2, characterized in that, The water outlet pipe is equipped with a safety valve, which is used to automatically release pressure when the pressure in the water outlet pipe exceeds a set value.

8. The heat pump water heater according to claim 2, characterized in that, Both the inlet pipe and the outlet pipe are straight pipes; and / or, The inlet pipe and the outlet pipe are spaced apart along the first direction; and / or, The inlet pipe and the outlet pipe extend along a second direction, which is perpendicular to the first direction.

9. The heat pump water heater according to any one of claims 1 to 8, characterized in that, The heat pump water heater also includes a heat exchange auxiliary circuit and a second heat exchanger. One end of the heat exchange auxiliary circuit is connected to the first heat exchanger, and the other end of the heat exchange auxiliary circuit is connected to the second heat exchanger.

10. The heat pump water heater according to claim 9, characterized in that, The heat exchange auxiliary circuit includes a first pipe section, a second pipe section, and a third pipe section located below the electronic control component along the first direction and connected end to end. The first pipe section is connected to the first heat exchanger. Along the first direction, the third pipe section is located above the first pipe section. The first pipe section is closer to the first heat exchanger than the filter component. The height of the third pipe section along the first direction is higher than the height of the filter component. The first pipe section and the third pipe section are parallel to the water inlet pipe. The second pipe section is perpendicular to the first pipe section and the third pipe section.

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