Integrated heat pump water heater unit

Abstract

The application relates to the technical field of heat pumps, and discloses an integrated heat pump hot water unit, which comprises a base for supporting and installing the whole heat pump hot water unit; a whole machine main body is installed on one side of the top of the base; the whole machine main body comprises a machine box which is fixedly connected to the top of the base; a water supply pump is fixedly connected to one side of the inner bottom wall of the machine box; a water outlet pipe is fixedly connected to the output end of the water supply pump; a circulating water pump is fixedly connected to the other side of the inner bottom wall of the machine box; a double-pipe heat exchanger is fixedly connected to the middle side of the inside of the machine box; one end of the double-pipe heat exchanger is connected in communication with the output end of the circulating water pump through a pipeline and a water flow switch. The whole machine main body, the water tank assembly, the base and the pipe valve assembly are integrated into a heat pump integrated unit, which is assembled and debugged in a factory and can be used by being connected to a water pipe network at the user side, so that the user investment cost is reduced, the reliability is improved, and the user experience is enhanced.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, specifically to an integrated heat pump water heater unit. Background Technology

[0002] A heat pump water heater is a device that uses heat pump technology to provide hot water. The working principle of a heat pump water heater is based on the heat pump cycle process, which absorbs heat from the environment, then sublimates it and releases it into the medium used to heat the water.

[0003] The current installation model for commercial air source heat pump units involves heat pump manufacturers selling the main unit, while local distributors or contractors purchase water tanks, water pumps, valves, control boxes, water pipes, etc., and assemble them on-site. This model suffers from various problems such as unreasonable selection, non-standard installation, unreliable connections, inadequate insulation, and defective electrical control, resulting in high user costs, poor user experience, and a high complaint rate.

[0004] To address the aforementioned problems, this invention proposes an integrated heat pump water heater unit. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated heat pump water heater unit, which solves the problems of high user investment costs, poor user experience, and high complaint rates associated with existing heat pump water heater units.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated heat pump water heater unit, comprising:

[0007] The base is used to support and install the entire heat pump water heater unit;

[0008] The main body of the unit, mounted on one side of the top of the base, is used to heat water. The main body includes a casing fixedly connected to the top of the base. A water supply pump is fixedly connected to one side of the bottom wall of the casing, and an outlet pipe is fixedly connected to the output end of the water supply pump. A circulating water pump is fixedly connected to the other side of the bottom wall of the casing. A shell-and-tube heat exchanger is fixedly connected to the middle of the casing. One end of the shell-and-tube heat exchanger is connected to the output end of the circulating water pump via a pipe and a flow switch. A finned heat exchanger is fixedly connected to one side of the inner wall of the casing, and a fan is fixedly connected to the other side of the inner wall of the casing. The finned heat exchanger and the shell-and-tube heat exchanger... The heat exchangers are connected by connecting pipes. Filters are installed on both sides of the connecting pipes. A one-way valve is installed on one side of the middle of the connecting pipe, and an electronic expansion valve is installed on the other side of the middle of the connecting pipe. A four-way valve is fixedly connected inside the casing. One end of the four-way valve is connected to the finned heat exchanger through a pipe and a needle valve. The other end of the four-way valve is connected to the top of the shell-and-tube heat exchanger through a pipe and a needle valve. A compressor is fixedly connected to the middle of the inner wall of the casing. One end of the compressor is connected to the bottom of the four-way valve through a pipe and a high-pressure switch. The other end of the compressor is connected to the top middle of the four-way valve through a pipe and a low-pressure switch.

[0009] A water tank assembly, mounted on the other side of the top of the base, is used to store heated water;

[0010] A valve assembly is installed between the main body of the machine and the water tank assembly to connect the main body of the machine and the water tank assembly. Water in the water tank assembly enters the main body of the machine for heating through the valve assembly.

[0011] Preferably, the water tank assembly includes an insulated water tank, which is fixedly connected to the top of the base. A water level switch is installed inside the insulated water tank, and a drain pipe is installed at the bottom of the insulated water tank. A drain ball valve is installed on the outer periphery of the drain pipe.

[0012] Preferably, the valve assembly includes an inlet pipe, a circulating inlet pipe, a circulating outlet pipe, and a supply pipe. One end of the inlet pipe is connected to the interior of the insulated water tank, and the other end of the inlet pipe is fixedly connected to a supply solenoid valve. The end of the supply solenoid valve away from the inlet pipe is fixedly connected to a tap water pipe. A user return water pipe is connected in the middle of the inlet pipe, and a return water solenoid valve is fixedly connected in the middle of the user return water pipe. One end of the circulating inlet pipe is connected to the interior of the insulated water tank, and the other end of the circulating inlet pipe is connected to the top of the shell-and-tube heat exchanger. One end of the circulating outlet pipe is connected to the interior of the insulated water tank, and the other end of the circulating outlet pipe is connected to the input end of the circulating water pump. One end of the supply pipe is connected to the interior of the insulated water tank, and the other end of the supply pipe is connected to the input end of the supply water pump.

[0013] Preferably, a water pump pressure controller is installed on the top of the water supply pump, and the water pump pressure controller and the water supply pump are electrically connected.

[0014] Preferably, both the water supply solenoid valve and the water return solenoid valve are fixedly connected to the top wall inside the casing.

[0015] Preferably, a refrigerant circuit control box is fixedly connected to one side of the inner top wall of the chassis, a water circuit control box is fixedly connected to the other side of the inner top wall of the chassis, and an electrically controlled door is installed on the outside of the chassis.

[0016] Preferably, a temperature sensor is installed inside the insulated water tank, a temperature sensor is installed on the outer periphery of the circulating water inlet pipe, a temperature sensor is installed at the bottom of the shell-and-tube heat exchanger, a temperature sensor is installed on the outer side of the finned heat exchanger, a temperature sensor is installed inside the chassis, and temperature sensors are installed at both ends of the compressor.

[0017] Preferably, a manual ball valve and a Y-type filter are sequentially installed on the outer periphery of the water supply pipe, and a manual ball valve and a Y-type filter are sequentially installed on the outer periphery of the circulating water outlet pipe.

[0018] Preferably, the inner wall of the insulated water tank is equipped with an electric auxiliary heater, and an overflow outlet is provided on one side of the top of the insulated water tank.

[0019] Working Principle: During the transportation and installation of the heat pump water heater unit, only the interfaces on the pipes and the water tank assembly within the valve assembly need to be separated from the main unit. The unit is then transported separately to the installation site. During installation, simply connect the inlet pipe to the interface on the insulated water tank, and then connect the other two ends to the supply and return solenoid valves inside the unit. Connect the tap water pipe and the user's return water pipe to the other ports of the supply and return solenoid valves, respectively. Next, connect the circulating inlet pipe to the interface on the insulated water tank, and connect the other end of the circulating inlet pipe to the interface at the top of the shell-and-tube heat exchanger. Then connect the circulating outlet pipe to the interface on the insulated water tank, and connect the other end of the circulating outlet pipe to the input end of the circulating water pump. Finally, install the supply water pipe between the insulated water tank and the input end of the supply water pump, thus completing the assembly of the heat pump water heater unit. It is then assembled, tested, and shipped from the factory. It can be used immediately after being connected to the user's water supply network, reducing user investment costs, improving reliability, and enhancing the user experience. During operation, when the water temperature inside the insulated water tank drops, the circulating water pump operates to extract water from the tank, allowing it to flow from the circulating outlet pipe into the shell-and-tube heat exchanger. Simultaneously, the fan starts, continuously collecting heat from the outside air. This heat is then collected by the finned heat exchanger, and the drawn-in, heated air enters the four-way valve, which then directs it to the low-pressure switch. There, it absorbs low-temperature heat from the outdoor air, converting the liquid refrigerant into a vapor state. This vapor then enters the compressor and is compressed, increasing its temperature and pressure, transforming the refrigerant into a high-temperature, high-pressure gas. The high-temperature, high-pressure gas then passes through the high-pressure switch and enters the four-way valve. It then flows through the four-way valve into the left-side pipe and finally enters the shell-and-tube heat exchanger through the interface at the top. At this point, the water flowing inside the shell of the heat exchanger quickly absorbs the heat from the high-temperature gas inside the outer shell, heating the water. The heated water then enters the insulated water tank through the circulating water inlet pipe. Simultaneously, the high-temperature steam, after releasing heat, decreases in temperature and exits from the outer shell of the heat exchanger through the connecting pipe. The cooled steam then passes through the electronic expansion valve, further reducing its temperature and pressure, preparing to return to the compressor for the next cycle.

[0020] This invention provides an integrated heat pump water heater unit. It has the following advantages:

[0021] 1. This invention adds key components such as a water supply pump, a circulation pump, a water pump pressure controller, a return water solenoid valve, a water supply solenoid valve, and a water circuit electrical control box to a traditional heat pump unit. Then, the main body of the unit is integrated with the water tank assembly, base, and pipe valve assembly to form an integrated heat pump unit. It is assembled and debugged in the factory and can be used by connecting to the water supply network on the user side. This reduces the user's investment cost, improves reliability, and enhances the user experience.

[0022] 2. For installation sites that are relatively far from the manufacturer, the integrated unit can be disassembled into the main body, pipe and valve components, base, and water tank components for transportation and local assembly and debugging; or only the main unit and pipe accessories can be sold, while the water tank and base can be produced and purchased locally based on the drawings provided by the manufacturer, thus saving transportation costs. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of the compressor structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the finned heat exchanger structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the fan structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the circulating water inlet pipe structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the four-way valve structure of the present invention.

[0029] The components include: 1. Base; 2. Chassis; 3. Water supply pump; 4. Pump pressure controller; 5. Circulating water pump; 6. Shell-and-tube heat exchanger; 7. Flow switch; 8. Finned heat exchanger; 9. Fan; 10. Connecting pipe; 11. Check valve; 12. Electronic expansion valve; 13. Filter; 14. Four-way valve; 15. Needle valve; 16. Compressor; 17. High-pressure switch; 18. Low-pressure switch; 19. Insulated water tank; 20. Water level switch. 21. Electric auxiliary heating; 22. Overflow outlet; 23. Water inlet pipe; 24. Water supply solenoid valve; 25. Tap water pipe; 26. User return water pipe; 27. Return water solenoid valve; 28. Circulating water inlet pipe; 29. ​​Circulating water outlet pipe; 30. Manual ball valve; 31. Y-type filter; 32. Water supply pipe; 33. Sewage pipe; 34. Sewage ball valve; 35. Electric control door; 36. Temperature sensor; 37. Refrigerant circuit control box; 38. Water circuit control box. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example:

[0032] Please see the appendix Figure 1 -Appendix Figure 6 This invention provides an integrated heat pump water heater unit, comprising:

[0033] Base 1 is used to support and install the entire heat pump water heater unit.

[0034] The main body of the unit is mounted on one side of the top of the base 1. The main body includes a casing 2, which is fixedly connected to the top of the base 1. The casing 2 serves as the external protective structure for the main body and also as the mounting structure for the internal components. A water supply pump 3 is fixedly connected to one side of the bottom wall of the casing 2. A water outlet pipe is fixedly connected to the output end of the water supply pump 3. When the water supply pump 3 is started, it discharges the hot water from the insulated water tank 19 for residential use. A circulating water pump 5 is fixedly connected to the other side of the bottom wall of the casing 2. When the circulating water pump 5 is started, it draws water from the insulated water tank 19, heats it through the main body, and returns it to the insulated water tank 19. A shell-and-tube heat exchanger 6 is fixedly connected to the middle of the casing 2. Through the shell-and-tube heat exchanger 6, the heat from the steam generated by the main body is transferred to the water flowing through it. One end of the shell-and-tube heat exchanger 6 is connected to the output end of the circulating water pump 5 through a pipe and a water flow switch 7. The circulating water pump 5 draws out the water stored in the insulated water tank 19 and discharges it into the shell-and-tube heat exchanger 6 for heating.

[0035] A finned heat exchanger 8 is fixedly connected to one side of the inner wall of the casing 2. The finned heat exchanger 8 cools the refrigerant vapor that has released heat from the main body of the unit, allowing it to exchange heat with the outside via a fan 9, or reheating the refrigerant flowing through the finned heat exchanger 8 using external heat, thus maintaining its vapor state. A fan 9 is fixedly connected to the other side of the inner wall of the casing 2. The finned heat exchanger 8 and the shell-and-tube heat exchanger 6 are connected by a connecting pipe 10. Filters 13 are installed on both sides of the connecting pipe 10. A one-way valve 11 is installed on one side of the middle of the connecting pipe 10, and an electronic expansion valve 12 is installed on the other side. When refrigerant vapor is discharged from the shell-and-tube heat exchanger 6, it is discharged through the connecting pipe 10, and its temperature and pressure are reduced by the electronic expansion valve 12 on the connecting pipe 10. After passing through the electronic expansion valve 12, it can enter the finned heat exchanger 8, absorb heat from the outside air to maintain its vapor state, and then enter the compressor 16.

[0036] A four-way valve 14 is fixedly connected inside the casing 2. One end of the four-way valve 14 is connected to the finned heat exchanger 8 via a pipe and a needle valve 15. After heat exchange, the refrigerant enters the four-way valve 14 in a vapor state. The other end of the four-way valve 14 is connected to the top of the shell-and-tube heat exchanger 6 via a pipe and a needle valve 15. A compressor 16 is fixedly connected to the middle of the inner wall of the casing 2. One end of the compressor 16 is connected to the bottom of the four-way valve 14 via a pipe and a high-pressure switch 17. The compressor 16 compresses the refrigerant into a high-temperature, high-pressure gas. The gas then passes through the pipe where the high-pressure switch 17 is located and enters the four-way valve 14. It then enters the shell-and-tube heat exchanger 6 through the pipe on the left side of the top of the four-way valve 14, heating the water flowing through the shell-and-tube heat exchanger 6. The other end of the compressor 16 is connected to the top middle side of the four-way valve 14 through a pipe and a low-pressure switch 18. The refrigerant after passing through the finned heat exchanger 8 will exchange heat and become a vapor state. Then it enters the four-way valve 14 and passes through the pipe in the middle of the top of the four-way valve 14 through the low-pressure switch 18 to enter the compressor 16 for compression. This makes the refrigerant become a high-temperature and high-pressure gas inside the compressor 16. Then it passes through the pipe on the high-pressure switch 17 and enters the pipe on the left side of the top of the four-way valve 14, and finally enters the shell-and-tube heat exchanger 6 for heating.

[0037] The water tank assembly, installed on the other side of the top of the base 1, includes an insulated water tank 19. The outside of the insulated water tank 19 is wrapped with insulation material, which can reduce the rate of heat loss inside the insulated water tank 19. The insulated water tank 19 is fixedly connected to the top of the base 1. A water level switch 20 is installed inside the insulated water tank 19 to measure the water level inside the insulated water tank 19 in real time, so as to avoid the inability to supply residents in time when the insulated water tank 19 is short of water.

[0038] The valve assembly, installed between the main body of the unit and the water tank assembly, includes an inlet pipe 23, a circulating inlet pipe 28, a circulating outlet pipe 29, and a supply pipe 32. One end of the inlet pipe 23 is connected to the inside of the insulated water tank 19, and the other end of the inlet pipe 23 is fixedly connected to a supply solenoid valve 24. The end of the supply solenoid valve 24 away from the inlet pipe 23 is fixedly connected to a tap water pipe 25. When the water level inside the insulated water tank 19 gradually decreases, the supply solenoid valve 24 will open, and water from the tap water pipe 25 will pass through the supply solenoid valve 24 and enter the insulated water tank 19 to replenish the used water inside the insulated water tank 19. The middle of the inlet pipe 23 is connected to a user return water pipe 26, and the middle of the user return water pipe 26 is fixedly connected to a return water solenoid valve 27. Unused water from the user flows back to the insulated water tank 19 through the user return water pipe 26. One end of the circulating water inlet pipe 28 is connected to the inside of the insulated water tank 19, and the other end is connected to the top of the shell-and-tube heat exchanger 6. The hot water heated by the shell-and-tube heat exchanger 6 enters the insulated water tank 19 through the circulating water inlet pipe 28 for storage. One end of the circulating water outlet pipe 29 is connected to the inside of the insulated water tank 19, and the other end is connected to the input end of the circulating water pump 5. The low-temperature water inside the insulated water tank 19 is drawn out by the circulating water pump 5, heated inside the shell-and-tube heat exchanger 6, and then circulated back into the insulated water tank 19. One end of the water supply pipe 32 is connected to the inside of the insulated water tank 19, and the other end is connected to the input end of the water supply pump 3. The hot water inside the insulated water tank 19 is discharged through the water supply pipe 32 and then transported to the residents' water pipes.

[0039] A water pump pressure controller 4 is installed on the top of the water supply pump 3. The water pump pressure controller 4 is electrically connected to the water supply pump 3. The water pump pressure controller 4 can adjust the working pressure of the water supply pump 3, thereby controlling the drainage volume of the water supply pump 3. The water supply solenoid valve 24 and the return water solenoid valve 27 are both fixedly connected to the top wall inside the casing 2, so that the external tap water pipe 25 and the user return water pipe 26 can be connected to the pipe valve assembly to continuously supply water to the water tank assembly. A refrigerant circuit control box 37 is fixedly connected to one side of the top wall inside the casing 2. The high-pressure switch 17 can control the delivery of Freon refrigerant into the pipes inside the main body of the unit as a medium for heating water. A water circuit control box 38 is fixedly connected to the other side of the top wall inside the casing 2. The water circuit control box 38 can control the opening and closing of the pipe valve assembly and various solenoid valves inside the main body of the unit. An electric control door 35 is installed on the outside of the chassis 2. Opening the electric control door 35 allows adjustment of the opening and closing of the refrigerant circuit control box 37 and the water circuit control box 38.

[0040] A drain pipe 33 is installed at the bottom of the insulated water tank 19, and a drain ball valve 34 is installed on the outer periphery of the drain pipe 33. The drain ball valve 34 can discharge the dirt at the bottom of the insulated water tank 19 along the drain pipe 33. Temperature sensors 36 are installed inside the insulated water tank 19, on the outer periphery of the circulating water inlet pipe 28, at the bottom of the shell-and-tube heat exchanger 6, on the outer side of the finned heat exchanger 8, inside the casing 2, and at both ends of the compressor 16. Through the installation of multiple temperature sensors 36, the water temperature and temperature changes in various parts of the unit can be effectively detected, allowing users to understand the real-time water temperature in the unit and control the operation of the unit by detecting the water temperature.

[0041] A manual ball valve 30 and a Y-type filter 31 are sequentially installed around the water supply pipe 32. When the manual ball valve 30 is opened, the Y-type filter 31 filters the hot water drawn from the water supply pipe 32, removing impurities. Similarly, a manual ball valve 30 and a Y-type filter 31 are sequentially installed around the circulating water outlet pipe 29. The Y-type filter 31 filters the tap water flowing through the circulating water outlet pipe 29, preventing impurities from adhering to the pipes inside the unit and thus avoiding blockages. An electric auxiliary heater 21 is installed on the inner wall of the insulated water tank 19. An overflow port 22 is located on one side of the top of the insulated water tank 19. When the water level inside the insulated water tank 19 is too high, excess water is discharged through the overflow port 22. Simultaneously, the electric auxiliary heater 21 ensures that the hot water stored inside the insulated water tank 19 does not lose temperature too quickly in cold weather.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated heat pump water heater unit, characterized in that, include: Base (1) is used to support and install the entire heat pump water heater unit; The main body of the unit is installed on one side of the top of the base (1) for heating water. The main body includes a casing (2), which is fixedly connected to the top of the base (1). A water supply pump (3) is fixedly connected to one side of the bottom wall of the casing (2). A water outlet pipe is fixedly connected to the output end of the water supply pump (3). A circulating water pump (5) is fixedly connected to the other side of the bottom wall of the casing (2). A shell-and-tube heat exchanger (6) is fixedly connected to the middle side of the casing (2). One end of the shell-and-tube heat exchanger (6) is connected to the output end of the circulating water pump (5) through a pipe and a flow switch (7). A finned heat exchanger (8) is fixedly connected to one side of the inner wall of the casing (2). A fan (9) is fixedly connected to the other side of the inner wall of the casing (2). The finned heat exchanger (8) and the shell-and-tube heat exchanger (6) are connected by a connecting pipe (10). The connecting pipe (10) is connected to the filter (13) on both sides. A one-way valve (11) is installed on one side of the middle of the connecting pipe (10), and an electronic expansion valve (12) is installed on the other side of the middle of the connecting pipe (10). A four-way valve (14) is fixedly connected inside the casing (2). One end of the top of the four-way valve (14) is connected to the finned heat exchanger (8) through a pipe and a needle valve (15). The other end of the top of the four-way valve (14) is connected to the top of the shell-and-tube heat exchanger (6) through a pipe and a needle valve (15). A compressor (16) is fixedly connected to the middle of the inner wall of the casing (2). One end of the compressor (16) is connected to the bottom of the four-way valve (14) through a pipe and a high-pressure switch (17). The other end of the compressor (16) is connected to the top middle side of the four-way valve (14) through a pipe and a low-pressure switch (18). A water tank assembly is installed on the other side of the top of the base (1) for storing heated water; the water tank assembly includes an insulated water tank (19), the insulated water tank (19) is fixedly connected to the top of the base (1), a water level switch (20) is installed inside the insulated water tank (19), a drain pipe (33) is installed at the bottom of the insulated water tank (19), and a drain ball valve (34) is installed on the outer periphery of the drain pipe (33); A valve assembly is installed between the main body of the machine and the water tank assembly to connect the main body of the machine and the water tank assembly. Water in the water tank assembly enters the main body of the machine for heating through the valve assembly. The valve assembly includes an inlet pipe (23), a circulating inlet pipe (28), a circulating outlet pipe (29), and a supply pipe (32). One end of the inlet pipe (23) is connected to the interior of the insulated water tank (19), and the other end of the inlet pipe (23) is fixedly connected to a supply solenoid valve (24). The end of the supply solenoid valve (24) away from the inlet pipe (23) is fixedly connected to a tap water pipe (25). The middle of the inlet pipe (23) is connected to a user return water pipe (26), and the middle of the user return water pipe (26) is fixedly connected to a return water solenoid valve. (27) One end of the circulating water inlet pipe (28) is connected to the inside of the insulated water tank (19), and the other end of the circulating water inlet pipe (28) is connected to the top of the shell-and-tube heat exchanger (6). One end of the circulating water outlet pipe (29) is connected to the inside of the insulated water tank (19), and the other end of the circulating water outlet pipe (29) is connected to the input end of the circulating water pump (5). One end of the water supply pipe (32) is connected to the inside of the insulated water tank (19), and the other end of the water supply pipe (32) is connected to the input end of the water supply pump (3). The water supply solenoid valve (24) and the water return solenoid valve (27) are both fixedly connected to the top wall inside the casing (2); A fluorine circuit control box (37) is fixedly connected to one side of the inner top wall of the chassis (2), a water circuit control box (38) is fixedly connected to the other side of the inner top wall of the chassis (2), and an electric control door (35) is installed on the outside of the chassis (2).

2. The integrated heat pump water heater unit according to claim 1, characterized in that, The water supply pump (3) is equipped with a water pump pressure controller (4) on top, and the water pump pressure controller (4) and the water supply pump (3) are electrically connected.

3. The integrated heat pump water heater unit according to claim 1, characterized in that, A temperature sensor (36) is installed inside the insulated water tank (19), a temperature sensor (36) is installed on the outer periphery of the circulating water inlet pipe (28), a temperature sensor (36) is installed at the bottom of the shell-and-tube heat exchanger (6), a temperature sensor (36) is installed on the outer side of the finned heat exchanger (8), a temperature sensor (36) is installed inside the casing (2), and a temperature sensor (36) is installed at both ends of the compressor (16).

4. The integrated heat pump water heater unit according to claim 1, characterized in that, The water supply pipe (32) is equipped with a manual ball valve (30) and a Y-type filter (31) in sequence on its outer periphery, and the circulating water outlet pipe (29) is equipped with a manual ball valve (30) and a Y-type filter (31) in sequence on its outer periphery.

5. The integrated heat pump water heater unit according to claim 1, characterized in that, An electric auxiliary heater (21) is installed on the inner wall of the insulated water tank (19), and an overflow outlet (22) is provided on one side of the top of the insulated water tank (19).

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