Integrated air source heat pump heating water unit

Abstract

The invention relates to the technical field of air conditioners, in particular to an integrated air source heat pump hot water supply unit which comprises a shell, a partition plate is arranged in the shell and divides the shell into a first cavity and a second cavity, two impeller sets in an up-and-down relation are installed in the first cavity, an air cooling heat exchanger is arranged on the outer side wall of the shell, and an air outlet is formed in the outer side wall of the air cooling heat exchanger. A supporting unit is arranged in the second cavity and divides the second cavity into an upper area and a lower area, a heat storage water tank is installed in the upper area, and a compressor, an economizer, a filter, a liquid storage tank, an expansion valve and a four-way valve are arranged in the lower area and connected through a pipeline to form a refrigerant circulation loop. An expansion tank is arranged on the side of the supporting unit, a circulating pump is further arranged in the lower area, a water heat exchanger is connected to the heat storage water tank, and the water heat exchanger, the circulating pump and the expansion tank are connected through a pipeline to form a warm water circulation loop.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and more particularly to an integrated air source heat pump water heating unit. Background Art

[0002] Compared with traditional heating equipment, air source heat pump units must be installed outdoors in a well-ventilated area, so sometimes the installation distance is far, the water circuit is relatively complex, the technical and on-site installation requirements are relatively strict, and the construction process of the circulating water system is large and complex. For example: design and installation of hot water storage tanks; design and installation of circulating pumps; design and installation of expansion tanks; exhaust valves; related valves, pipes, insulation; circulating pump control circuits, etc.

[0003] One of the internal (water circuit) structures of traditional air source heat pumps (the penetration rate is about 80%):

[0004] At present, the internal water circuit of the domestic air source heat pump water machine brand only includes water / fluorine heat exchanger and water flow switch, which makes the on-site installation and construction outside the unit very cumbersome. For example, it is necessary to connect an expansion tank and valve to the outlet pipe of the unit, and connect a circulating pump, filter, heat storage tank and valve to the return pipe of the unit.

[0005] Based on the above problems, there is currently a design in which the circulating pump is designed inside the heat pump unit. For example, this design is the air source heat pump air conditioner disclosed in announcement number CN115789945A. Although the circulating pump is integrated into the unit, most other equipment still needs to be designed and installed on site, such as the expansion tank and related valves, filters and their related valves, and heat storage tanks, which still take a long time to install. Summary of the invention

[0006] To this end, the purpose of the present invention is to provide an integrated air source heat pump water heating unit, so that the system integration is high. The unit not only includes a circulating pump and a heat exchanger, but also a hot water storage tank. All necessary equipment on site is fully included, reducing a large amount of on-site construction.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An integrated air source heat pump water heating unit, comprising:

[0009] A shell is provided with a partition plate in the shell, the partition plate divides the shell into a first chamber and a second chamber, two impeller groups in a vertical relationship are installed in the first chamber, and an air-cooled heat exchanger is provided on the outer side wall of the shell,

[0010] A support unit is provided in the second chamber, and the support unit divides the second chamber into two areas in an upper and lower relationship, and a hot water storage tank is installed in the upper area.

[0011] The compressor, economizer, filter, liquid storage tank, expansion valve and four-way valve are placed in the lower area and connected by pipes to form a refrigerant circulation loop.

[0012] An expansion tank is provided on the side of the support unit, and a circulation pump is also provided in the lower area. The hot water storage tank is connected to a water heat exchanger.

[0013] The water heat exchanger, the circulation pump and the expansion tank are connected through pipelines to form a warm water circulation loop.

[0014] The present invention is further configured as follows: the support unit comprises a frame for accommodating the hot water storage tank and a support rod for supporting the frame, so as to form an upper area and a lower area based on the upper and lower end surfaces of the frame, the two ends of the support rod are respectively fixed to the frame and the bottom surface of the shell, and one end of the frame is fixed to the partition.

[0015] A lifting ring is arranged on the outer wall of the hot water storage tank, a through hole is opened on the lifting ring, a connecting hole corresponding to the through hole is opened on the frame, and the through hole and the connecting hole are connected via a fastener.

[0016] The present invention is further configured as follows: the shell includes a bottom plate, a top plate, a side plate and a sealing plate, the side plate is arranged between the bottom plate and the top plate, and the two ends of the partition are respectively connected to the bottom plate and the top plate.

[0017] A first chamber is formed between one end surface of the partition and one of the side plates, and a second chamber is formed between the other end surface of the partition and the other side plate. The side plate is provided with a station hole for connecting the water inlet pipe and the water outlet pipe.

[0018] The present invention is further configured as follows: the compressor and the circulation pump are connected to the bottom plate, and the economizer and the liquid storage tank are connected to the partition plate.

[0019] The present invention is further configured as follows: the low-pressure suction end and the high-pressure exhaust end of the compressor are connected to two ports of the four-way valve through pipes, the other two ports of the four-way valve are respectively connected to the water heat exchanger and the air-cooled heat exchanger through pipes, and the four-way valve is supported by the pipe and suspended in the lower area.

[0020] The present invention is further configured as follows: the four ports of the economizer are connected to the compressor, the liquid storage tank, the first expansion valve and the second expansion valve respectively through pipelines.

[0021] The pipe connecting the economizer and the liquid storage tank is also connected with a first filter.

[0022] The first expansion valve is also connected to a second filter, the second filter is connected to the air-cooled heat exchanger, and the second expansion valve is connected in parallel to the pipelines of the two ports of the economizer.

[0023] The first expansion valve, the second expansion valve, the first filter and the second filter are all suspended in the lower area by pipe support.

[0024] The present invention is further configured as follows: the expansion tank is a flat expansion tank, the expansion tank is placed against the side of the support unit, and a connecting portion connected to the frame of the support unit and the support foot is provided on the expansion tank.

[0025] The present invention is further configured as follows: a water outlet for connecting a water outlet pipe is provided at the bottom of the hot water storage tank, a water inlet for connecting a water inlet pipe is provided at the top of the hot water storage tank, a water flow switch is installed on the water inlet pipe, and a circulating pump is connected to the water outlet pipe.

[0026] A safety valve and an automatic exhaust valve are also provided on the top of the hot water storage tank.

[0027] The present invention is further configured as follows: the compressor and the circulating pump are arranged side by side on the bottom plate in the lower area.

[0028] The economizer and the liquid storage tank are arranged side by side on the partition in the lower area.

[0029] The air injection port of the compressor and the port connected to the economizer are on the same plane, and the pipeline connecting the air injection port of the compressor and the port connected to the economizer is curved, and the curved shape includes a plurality of curved sections alternating up and down in sequence.

[0030] The present invention is further configured as follows: the water heat exchanger is a coil placed in a hot water storage tank, the coil is conically coiled in the hot water storage tank, one end of the coil is connected to a four-way valve, and the other end is connected to a liquid storage tank.

[0031] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are:

[0032] The hot water storage tank, circulating pump, expansion tank and automatic exhaust valve are integrated into one, eliminating the need to install the hot water storage tank on site.

[0033] In particular, since the air source heat pump unit and the circulating water system are completely modular in design, the installation locations of the hot water storage tank, circulating pump, connecting pipes, pipe fittings, and brackets are eliminated, thus saving a lot of equipment space.

[0034] In particular, since traditional air source heat pump units involve a large amount of on-site design and installation work, there are many installers. After integration, the number of construction personnel is effectively reduced, saving personnel costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a waterway in Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of the first direction structure of the first embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure in the second direction of the first embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure in the third direction of the first embodiment of the present invention;

[0039] Figure 5 Schematic diagram of the waterway of the second embodiment of the present invention.

[0040] Shell 1, first chamber 101, second chamber 102, top plate 11, bottom plate 12, side plate 13, partition 14, impeller assembly 15, sealing plate 16, support unit 2, frame 21, support rod 22, air-cooled heat exchanger 31, water heat exchanger 32, hot water storage tank 4, water inlet pipe 41, water outlet pipe 42, water flow switch 421, circulating pump 5, compressor 6, economizer 7, first filter 81, second filter 82, first expansion valve 91, second expansion valve 92, expansion tank 93, liquid storage tank 10, four-way valve 100, hot water storage tank 400, coil 401. DETAILED DESCRIPTION

[0041] Reference Figures 1 to 4 To further illustrate the first embodiment of the present invention, the heating water unit includes a shell 1 and various core components of the air source heat pump integrated in the shell 1, and the core components specifically include an air-cooled heat exchanger 31, a water heat exchanger 32, a hot water storage tank 4, a circulating pump 5, a compressor 6, an economizer 7, a filter, a liquid storage tank 10, an expansion valve, a four-way valve 100, an expansion tank 93 and a controller, wherein there are two filters and two expansion valves.

[0042] The controller is responsible for monitoring and adjusting the operating status of each component to ensure that the system operates efficiently and stably under different working conditions. The sensor collects temperature, pressure and flow data in real time, automatically adjusts the fan speed, expansion valve opening and four-way valve 100 status, and realizes intelligent control.

[0043] Shell 1 structure: Shell 1 consists of a bottom plate 12, a top plate 11, side plates 13 and a sealing plate 16. The side plates 13 and the sealing plate 16 are vertically connected between the bottom plate 12 and the top plate 11 to form a closed cavity, with the side plates 13 serving as the side walls on the left and right sides, and the sealing plate 16 serving as the side walls on the front and back sides. The two ends of the partition 14 are respectively connected to the bottom plate 12 and the top plate 11, and the top plate 11 and the bottom plate 12 are reinforced to support heavy-loaded components such as the compressor 6. Therefore, vibration reduction and sound insulation treatments are usually performed under the bottom plate 12 and at the structural rib position to reduce operating noise and vibration.

[0044] The partition 14 divides the interior of the housing 1 into two chambers that do not interfere with each other:

[0045] The first chamber 101 is formed between one end surface of the partition plate 14 and the left side plate 13 and is mainly used for air passage and heat exchange cycle.

[0046] The second chamber 102 is formed between the other end surface of the partition 14 and the right side plate 13, and mainly contains the refrigerant circuit and the heat storage system. The right side plate 13 is provided with a workstation hole for connecting the water inlet pipe 41 and the water outlet pipe 42, and a flange is reserved or a sealing joint is installed to facilitate rapid water connection on site to prevent leakage.

[0047] This division ensures the relative isolation of the air circulation area and the core component area of ​​the unit, which helps to dissipate heat and reduce noise.

[0048] Two impeller groups 15 are installed in the first chamber 101 in an upper and lower relationship. These two impeller groups 15 may correspond to one or two axial flow fans / centrifugal fans. They are distributed up and down, which can more effectively utilize the air inlet and outlet space. The up and down arrangement of the fans can achieve gradient distribution of air volume, reduce return air resistance, and can synergistically increase pressure when the unit is running at a large volume. If a variable frequency fan is used, the speed can be automatically adjusted according to the ambient temperature and heat exchange requirements to improve energy efficiency.

[0049] The finned air-cooled heat exchanger 31 is installed on the outer wall of the housing 1 and is used as an evaporator or condenser for heat exchange between gas and liquid. In heating mode, the air-cooled heat exchanger 31 absorbs heat from the air; in cooling mode, it releases heat to the air.

[0050] A support unit 2 is installed in the second chamber 102. The support unit 2 divides the second chamber 102 into two areas in an upper and lower relationship. A hot water storage tank 4 is installed in the upper area.

[0051] The second chamber 102 is provided with a support unit 2, which is divided into two upper and lower areas:

[0052] Upper area: Install the hot water storage tank 4. The hot water storage tank 4 is made of stainless steel or enameled steel plate with a capacity of 50L, which is selected according to the application requirements. The hot water storage tank 4 is provided with a water outlet at the bottom and a water inlet at the top. A water flow switch is installed on the water outlet pipe 42 to ensure normal circulating water flow. A safety valve and an automatic exhaust valve are also equipped on the top to ensure safe operation of the system. Install the automatic exhaust valve and safety valve on the hot water storage tank.

[0053] Lower area: The compressor 6, economizer 7, filter, liquid storage tank, expansion valve and four-way valve 100 are installed and connected through pipelines to form a refrigerant circulation loop.

[0054] The support unit 2 includes a frame 21 and a support rod 22:

[0055] Frame 21: It is composed of three square steel pipes welded together, of which one end of two steel pipes arranged parallel to the bottom plate 12 is welded and fixed to the partition 14, and the other end of the two parallel steel pipes is welded and fixed to form a whole. The upper and lower end surfaces of the frame 21 as a whole are flat, which serves as the installation reference surface of the water tank and also leaves space for the subsequent installation of various pipelines. The upper and lower end surfaces of the frame 21 are used as references to form an upper area and a lower area. The two ends of the remaining two support rods 22 are fixed to the frame 21 and the bottom plate 12 respectively.

[0056] A lifting ring is provided on the outer wall of the bottom of the hot water storage tank 4, a through hole is provided on the lifting ring, a connecting hole corresponding to the through hole is provided on the frame 21, and the through hole and the connecting hole are connected by bolts serving as fasteners.

[0057] In the lower area, the compressor 6 and the circulating pump 5 are arranged side by side on the bottom plate 12 and fixed by screws. The economizer 7, the liquid storage tank and the water heat exchanger 32 are installed on the partition 14, and the installation holes are reserved and connected by screws.

[0058] Compressor 6: adopts scroll type or reciprocating type, has the characteristics of high energy efficiency ratio and low noise. Its low-pressure suction end and high-pressure exhaust end are respectively connected to two ports of the four-way valve 100.

[0059] Economizer 7: Located near the compressor 6, it is convenient to connect the intermediate gas injection pipeline, improve the heating amount and efficiency of the system, and realize the secondary heat exchange between gas and liquid. Its four ports are respectively connected to the compressor 6, the liquid storage tank, the first expansion valve 91 and the second expansion valve 92. The first filter 81 is provided on the pipeline connecting the economizer 7 and the liquid storage tank, the first expansion valve 91 is connected to the second filter 82, and the second filter 82 is connected to the air-cooled heat exchanger 31. The second expansion valve 92 is connected in parallel to the two port pipelines of the economizer 7.

[0060] Filters: The first filter 81 is installed between the economizer 7 and the liquid storage tank, and the second filter 82 is installed between the first expansion valve 91 and the air-cooled heat exchanger 31, respectively arranged in different branches to effectively remove moisture, acidic substances and metal debris in the system.

[0061] Liquid storage tank: stores refrigerant, balances system operating conditions, and avoids liquid hammer. Its two ends are connected to the economizer 7 and the water heat exchanger 32 through pipelines.

[0062] Expansion valve: includes a first expansion valve 91 and a second expansion valve 92 arranged in parallel, which are diverted or switched according to the working conditions to ensure the best throttling effect under different loads and ambient temperatures, and provide redundancy when one expansion valve fails.

[0063] Four-way valve 100: It is suspended and installed in the lower area, connected to the compressor 6, economizer 7, liquid storage tank and air-cooled heat exchanger 31 through pipelines, and is responsible for switching the flow direction of the refrigerant to achieve the conversion of cooling or heating working conditions.

[0064] Circulation pump 5: usually a warm water circulation pump 5, used to circulate water in the system continuously to improve heat exchange efficiency. The circulation pump 5 is connected to the hot water storage tank 4 and the water heat exchanger 32 through a pipeline.

[0065] Water heat exchanger 32: In heating mode, high temperature and high pressure refrigerant transfers heat to water in water heat exchanger 32, heats the water and delivers it to the heating system. In cooling mode, low temperature and low pressure refrigerant absorbs heat from water, cools the water and delivers it to the cooling system. The four connection ports of water heat exchanger 32 are respectively connected to circulation pump 5, water outlet pipe 42, liquid storage tank and four-way valve 100.

[0066] An expansion tank 93 is installed on the outer side wall of the support unit 2 , a connection structure such as a connection sheet is fixed on the outer wall of the expansion tank 93 , and then the expansion tank 93 is connected to the frame 21 and the support rod 22 by bolts.

[0067] A circulation pump 5 is installed on the bottom plate 12 in the lower area, and a water heat exchanger 32 is connected to the hot water storage tank 4. The water heat exchanger 32, the circulation pump 5 and the expansion tank 93 are connected by pipes to form a warm water circulation loop. With the help of the power of the circulation pump 5, hot water is supplied from the unit to the terminal (such as floor heating coil, radiator, etc.).

[0068] The expansion tank 93 is used to balance the system pressure, absorb or release the volume change of the system water, and prevent the pipes and water tanks from generating excessive pressure due to thermal expansion and contraction.

[0069] The compressor 6 and the circulating pump 5 are connected to the bottom plate 12, and the economizer 7, the liquid storage tank 10 and the water heat exchanger 32 are connected to the partition 14. There are holes on the partition 14 for installing the three (economizer 7, liquid storage tank and water heat exchanger 32), and the three are connected to the partition 14 through the connection parts added on the three bodies by screws.

[0070] The placement orientation of the three along the direction from the front sealing plate 16 to the rear edge sealing plate is: economizer 7 - water heat exchanger 32 - liquid storage tank, wherein the water heat exchanger 32 is placed above the economizer 7 and the liquid storage tank 10.

[0071] The economizer 7 is located close to the compressor 6 and is easily connected to the intermediate gas injection pipeline to ensure that the effects of secondary throttling and enthalpy increase are fully exerted.

[0072] The low-pressure suction end and the high-pressure exhaust end of the compressor 6 are connected to two ports of the four-way valve 100 through pipes, and the other two ports of the four-way valve 100 are respectively connected to the water heat exchanger 32 and the air-cooled heat exchanger 31 through pipes. The four-way valve 100 is supported by the pipes and suspended in the lower area. The four-way valve 100 is a key component for the heat pump unit to achieve the switching of cooling / heating working conditions. The advantage of the suspended installation is that the vibration is absorbed by the bending of the pipe itself, making the four-way valve 100 more stable in a vibration environment and reducing metal fatigue.

[0073] The first expansion valve 91, the second expansion valve 92, the first filter 81 and the second filter 82 are all supported by pipes and suspended in the lower area. The suspended design utilizes the mechanical strength and rigidity of the pipes themselves to suspend and fix the valve components and filters, which helps to reduce the impact of vibration on the components.

[0074] The expansion tank 93 is a flat expansion tank. The flat structure occupies relatively little space when arranged inside the unit, and is easy to fit the support unit 2. Its shape is more conducive to dispersing the internal water pressure.

[0075] The bottom of the hot water storage tank 4 is provided with a water outlet for connecting to the water outlet pipe 42, and the top of the hot water storage tank 4 is provided with a water inlet for connecting to the water inlet pipe 41. A water flow switch is installed on the water outlet pipe 42, and a circulation pump is connected to the water outlet pipe 42.

[0076] Hot water entering from the top can maintain thermal stratification, achieve better stratification of hot and cold water, and improve heat exchange efficiency; water outlet from the bottom can ensure that high-temperature water is available at any time during heating, and can also avoid blockage of water outlet by scaling deposits in the water tank.

[0077] The water flow switch 421 is used to detect whether the flow of circulating water in the system is normal. Once insufficient or stagnant water flow occurs, an alarm will be issued or the machine will be shut down in time to protect the unit.

[0078] The circulation pump 5 draws water from the water outlet of the hot water storage tank 4, sends it to the end or the water heat exchanger 32 through the pipeline, and then returns to the water tank, forming a closed cycle.

[0079] A safety valve and an automatic exhaust valve are also provided on the top of the hot water storage tank 4. The safety valve is responsible for automatically releasing pressure when the water tank or system pressure is too high to prevent the water tank or pipeline from bursting; the automatic exhaust valve removes the gas dissolved in the water or the bubbles generated by temperature changes to avoid adverse effects of air blockage on the circulation pump.

[0080] The compressor 6 and the circulating pump 5 are arranged side by side on the bottom plate 12 in the lower area. The bottoms of the compressor 6 and the circulating pump 5 are provided with connection parts connected to the bottom plate 12, which are fixed by screws.

[0081] The air injection port of the compressor 6 and the port connected to the economizer 7 are on the same plane. The pipe connecting the air injection port of the compressor 6 and the port connected to the economizer 7 is curved. The curved shape includes several curved sections that alternate up and down, and the whole is a serpentine pipe. The copper pipe of the refrigerant circuit adopts the pipe bending process to adapt to the space limitation and shock absorption requirements. The specific number of curved sections should consider the minimum bending radius and flow resistance.

[0082] In order to achieve efficient and flexible connection between each core component and the pipeline, key components (such as compressor 6, economizer 7, filter, liquid storage tank 10, expansion valve, four-way valve 100, etc.) are all designed with standardized flange interfaces. In this way, each module can be connected through a unified flange to ensure the tightness and reliability of the connection, which is convenient for rapid assembly and disassembly. Between non-high-pressure key components, quick connectors and high-efficiency seals are used to achieve rapid connection and disconnection of pipelines, reduce installation time and complexity, and reduce the risk of leakage.

[0083] The pipes of the refrigerant circuit and the water circulation circuit are prefabricated in the factory according to standard length and bending radius. According to the functional areas of the system (such as the air duct area and the refrigerant circuit area), a modular pipeline layout is designed. Each pipeline corresponds to a specific module to avoid complex pipeline crossings and improve the neatness and maintenance convenience of the system.

[0084] The compressor 6, circulating pump 5, economizer 7, filter and other core components are designed as independent modules, and each module integrates necessary pipeline connection points and interfaces. The modules are connected through standard interfaces for easy replacement and upgrading.

[0085] Auxiliary components such as the expansion tank 93 and the heat storage tank 4 are also designed as independent modules with reserved standard interfaces to seamlessly connect with the core functional modules.

[0086] As an independent module, the controller is connected to each core component through a standardized data bus to manage the system operation in a unified manner. In this way, the replacement or upgrade of the control module does not affect other components, improving the intelligence level of the system.

[0087] Temperature, pressure, flow sensors, etc. are designed as independent modules and connected to the controller through standard interfaces for easy monitoring and data collection.

[0088] Embodiment 2, as Figure 5 As shown: the water heat exchanger is a coil 401 placed in the hot water storage tank 400. The coil 401 is conical and coiled in the hot water storage tank 400. One end of the coil 401 is connected to the four-way valve 100. After switching, it can play the role of "condenser" or "evaporator" (depending on whether the unit is heating or cooling). The other end is connected to the liquid storage tank 10, which can adjust the refrigerant level and replenish / recover the refrigerant under different working conditions. A water flow switch 402 is placed on the water inlet pipe 41 connected to the hot water storage tank 400.

[0089] Compared with traditional concentric coils, conical coils have a larger heat exchange area and are more conducive to efficient heat exchange. The conical structure can also cause water to form a certain flow disturbance in the water tank, reduce local heat retention, and improve heat exchange efficiency.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated air source heat pump water heating unit, characterized in that: include: A shell is provided with a partition plate in the shell, the partition plate divides the shell into a first chamber and a second chamber, two impeller groups in a vertical relationship are installed in the first chamber, and an air-cooled heat exchanger is provided on the outer side wall of the shell, A support unit is provided in the second chamber, and the support unit divides the second chamber into two areas in an upper and lower relationship, and a hot water storage tank is installed in the upper area. The compressor, economizer, filter, liquid storage tank, expansion valve and four-way valve are placed in the lower area and connected by pipes to form a refrigerant circulation loop. An expansion tank is provided on the side of the support unit, and a circulation pump is also provided in the lower area. The hot water storage tank is connected to a water heat exchanger. The water heat exchanger, the circulation pump and the expansion tank are connected through pipelines to form a warm water circulation loop.

2. The integrated air source heat pump water heating unit according to claim 1, characterized in that: The support unit includes a frame for accommodating the hot water storage tank and a support rod for supporting the frame, so as to form an upper area and a lower area respectively based on the upper and lower end surfaces of the frame, the two ends of the support rod are respectively fixed to the frame and the bottom surface of the shell, and one end of the frame is fixed to the partition. A lifting ring is arranged on the outer wall of the hot water storage tank, a through hole is opened on the lifting ring, a connecting hole corresponding to the through hole is opened on the frame, and the through hole and the connecting hole are connected via a fastener.

3. The integrated air source heat pump water heating unit according to claim 2, characterized in that: The shell includes a bottom plate, a top plate, a side plate and a sealing plate. The side plate is arranged between the bottom plate and the top plate. Both ends of the partition are connected to the bottom plate and the top plate respectively. A first chamber is formed between one end surface of the partition and one of the side plates, and a second chamber is formed between the other end surface of the partition and the other side plate. The side plate is provided with a station hole for connecting the water inlet pipe and the water outlet pipe.

4. The integrated air source heat pump water heating unit according to claim 3, characterized in that: The compressor and the circulating pump are connected to the bottom plate, and the economizer and the liquid storage tank are connected to the partition plate.

5. The integrated air source heat pump water heating unit according to claim 4, characterized in that: The low-pressure suction end and the high-pressure exhaust end of the compressor are connected to two ports of the four-way valve through pipelines, and the other two ports of the four-way valve are respectively connected to the water heat exchanger and the air-cooled heat exchanger through pipelines. The four-way valve is supported by the pipeline and suspended in the lower area.

6. The integrated air source heat pump water heating unit according to claim 5, characterized in that: The four ports of the economizer are connected to the compressor, the liquid storage tank, the first expansion valve and the second expansion valve respectively through pipelines. The pipe connecting the economizer and the liquid storage tank is also connected with a first filter. The first expansion valve is also connected to a second filter, the second filter is connected to an air-cooled heat exchanger, and the second expansion valve is connected in parallel to the pipelines at the two ports of the economizer. The first expansion valve, the second expansion valve, the first filter and the second filter are all suspended in the lower area by pipe support.

7. The integrated air source heat pump water heating unit according to claim 2, characterized in that: The expansion tank is a flat expansion tank, which is placed against the side of the support unit. A connecting portion connected to the frame and support legs of the support unit is provided on the expansion tank.

8. The integrated air source heat pump water heating unit according to claim 2, characterized in that: The bottom of the hot water storage tank is provided with a water outlet for connecting to a water outlet pipe, the top of the hot water storage tank is provided with a water inlet for connecting to a water inlet pipe, the water outlet pipe is connected to a circulating pump, and the top of the hot water storage tank is also provided with a safety valve and an automatic exhaust valve.

9. The integrated air source heat pump water heating unit according to claim 5, characterized in that: The compressor and the circulating pump are arranged side by side on the bottom plate in the lower area. The economizer and the liquid storage tank are arranged side by side on the partition in the lower area. The air injection port of the compressor and the port connected to the economizer are on the same plane, and the pipeline connecting the air injection port of the compressor and the port connected to the economizer is curved, and the curved shape includes a plurality of curved sections alternating up and down in sequence.

10. The integrated air source heat pump water heating unit according to claim 5, characterized in that: The water heat exchanger is a coil placed in the hot water storage tank. The coil is conical and coiled in the hot water storage tank. One end of the coil is connected to a four-way valve, and the other end is connected to a liquid storage tank.

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