An air source heat pump water heater with a built-in economizer in a water-side heat exchanger

Abstract

The present invention discloses an air source heat pump water heater with a built-in economizer in a water-side heat exchanger, relates to the technical field of air source heat pump water heaters, and solves the problem that frost will form on the surface of the evaporator of the air source heat pump water heater after long-term use. If it cannot be handled in time, the thickness of the ice will be further increased, thereby causing the entire device to not operate normally. Secondly, the heat exchanger cannot be disassembled and cleaned very quickly. Through the provided evaporator assembly, the provided delivery hole is used to deliver high-temperature and high-pressure refrigerant to the surface of the inner casing to perform heat and cold exchange on the frosted part of the surface of the inner casing, thereby melting the frost condensed on the surface of the inner casing, avoiding the frost thickness being too thick that causes the overall device to not operate normally. Secondly, the provided air inlet slot is used to discharge the melted water, avoiding the accumulation of frost and ice inside the outer casing again to affect subsequent work.

Description

Technical Field

[0001] The invention relates to the technical field of air source heat pump water heaters, and in particular to an air source heat pump water heater with a built-in economizer in a water-side heat exchanger. Background Art

[0002] Air source heat pump water heater is a new type of high-efficiency and energy-saving water heater. It can absorb low-temperature heat in the air and convert it into high-temperature heat energy after compression by the compressor to heat the water. The cost of air source heat pump water heater to produce the same amount of hot water is only 1 / 4 of that of electric water heater and 1 / 3 of that of gas water heater, and its utilization rate is higher than that of electric-assisted solar water heater.

[0003] According to the patent application number CN201510047199.8, the patent includes a box, a columnar water tank disposed in the box, a fan, an evaporator and a compressor disposed in the box. The compressor, fan and evaporator are disposed between the inner wall of the box and the water tank along the radial direction of the water tank, and are arranged in sequence along the circumferential direction of the water tank. The above patent arranges the compressor, fan and evaporator between the inner wall of the box and the water tank along the radial direction of the water tank, and are arranged in sequence along the circumferential direction of the water tank. The space between the box and the water tank is fully utilized, and there is no need to specially set up a cavity to accommodate the compressor, fan, evaporator, etc., which reduces the overall volume of the air source heat pump water heater and facilitates user placement. The air source heat pump water heater in the present invention provides a new arrangement mode of the air source heat pump water heater, which makes the internal structure arrangement of the air source heat pump water heater more reasonable and more compatible with the home environment. Although the air source heat pump water heater of the above patent reduces the overall volume during use and installation, it is suitable for installation in a smaller area. However, when the air source heat pump water heater of the above patent is used for a long time, the evaporator will continuously absorb the heat of the air to reduce the air temperature when the air source heat pump water heater is used in the cold winter in the north, and the moisture in the air will condense on the fins of the evaporator to form water droplets. The water droplets condensed on the evaporator are easy to frost. Therefore, continuing to use the air source heat pump water heater under frosting conditions will further increase the thickness of the ice, and eventually cause the system to fail to operate normally. Therefore, it is necessary to clean the frost on the surface of the evaporator. The above patent does not set up a corresponding structure to deal with the frosting situation. Secondly, after a long period of use, the heat exchange tubes inside the heat exchanger will accumulate a layer of scale, and the heat exchanger needs to be disassembled and cleaned. If the heat exchanger is not cleaned regularly, the plate heat exchanger will burst, and the inner tube of the shell and tube heat exchanger will rupture, causing the entire heat pump water heater to lose its function. Summary of the invention

[0004] The purpose of the present invention is to provide an air source heat pump water heater with a built-in economizer in a water-side heat exchanger, so as to solve the following technical problems:

[0005] When the air source heat pump water heater is used for a long time, frost will form on the surface of the evaporator. If it is not handled in time, the thickness of the ice will increase further, causing the entire device to not operate normally. Secondly, the heat exchanger cannot be disassembled and cleaned quickly.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An air source heat pump water heater with a built-in economizer in a water-side heat exchanger comprises a mounting base, wherein the mounting base is used to provide a supporting surface to facilitate the installation of the air source heat pump water heater body, the top of the mounting base is fixedly connected to the air source heat pump water heater body, an evaporator assembly is arranged inside the air source heat pump water heater body, and the refrigerant is cooled by the evaporator assembly to facilitate the subsequent recycling of the refrigerant, the evaporator assembly comprises an evaporator body fixedly connected to the air source heat pump water heater body, an evaporator tube assembly is fixedly connected inside the evaporator body, and the evaporator tube assembly is arranged in a U-shape, and the U-shape increases the heat exchange contact area between the refrigerant and the ice. , to achieve a better deicing effect, one side of the evaporator tube assembly is fixedly connected to a connecting plate through a delivery pipe, and the connecting plate and the inner sleeve are interconnected, and the used refrigerant is collected and processed by using the connecting plate and the delivery pipe, thereby realizing the circulation of the refrigerant to avoid waste, the top of the evaporator tube assembly is fixedly connected to an input pipe, and one side of the input pipe is fixedly connected to an electromagnetic valve, and the electromagnetic valve is used to control the discharge of the refrigerant, and further to defrost the evaporator tube assembly, one side of the evaporator body is provided with a plurality of air inlets, and the bottom of the evaporator body is fixedly connected to a drain pipe, and the melted water is centrally discharged and collected through the provided drain pipe;

[0008] The evaporator tube assembly includes an outer sleeve fixedly connected to the evaporator body, an inner sleeve fixedly connected to the inside of the outer sleeve, and a gap is provided between the outer sleeve and the inner sleeve, a plurality of conveying holes are provided on the inner wall of the outer sleeve, and the plurality of conveying holes are used to transport the introduced refrigerant to further melt the frost on the surface of the inner sleeve, and a plurality of air inlet slots are provided inside the outer sleeve, and on the one hand, the air inlet slots are used to drain the outside air to absorb the heat in the outside air, and on the other hand, the air inlet slots are used to discharge the melted water.

[0009] As a further solution of the present invention: the bottom of the air source heat pump water heater body is fixedly connected with a fixed seat, and the top of the fixed seat is slidably connected with a heat exchange component through a sliding groove. The heat exchange component can be slid and disassembled through the fixed seat and the sliding groove, which is convenient for subsequent inspection and cleaning of the heat exchange component after long-term use, and the operation is simple and quick.

[0010] As a further solution of the present invention: the heat exchange component includes a heat exchanger body slidably connected to the sliding groove, and a heat exchange tube is fixedly connected inside the heat exchanger body, and the heat exchange tube is also U-shaped. Such a setting can increase the contact area between cold water and high-temperature and high-pressure refrigerant, thereby improving the heat exchange efficiency. Both ends of the heat exchange tube are fixedly connected with connecting components, and the connecting components are used to disassemble the parts connected to the heat exchange component. The structure is simple and easy to operate. The top of the heat exchanger body is fixedly connected with a connecting sleeve, and the bottom of the heat exchanger body is fixedly connected with a sliding block. One side of the heat exchanger body is fixedly connected with an inspection plate through a limit bolt, and the inspection plate is used to inspect the heat exchange tube inside the heat exchanger body to avoid aging of the heat exchange tube due to the passage of time, and further prevent the aging of the heat exchange tube from affecting the overall work.

[0011] As a further solution of the present invention: the connection assembly includes a first flange fixedly connected to the heat exchange tube, and one side of the first flange is fixedly connected to a second flange by fixing bolts.

[0012] As a further solution of the present invention: a liquid storage tank is fixedly connected to the interior of the air source heat pump water heater body, and an expansion valve is fixedly connected to one side of the liquid storage tank. The refrigerant after heat exchange is stored through the liquid storage tank, and the liquid refrigerant is processed and transported to the evaporator assembly through the expansion valve for the next circulation operation.

[0013] As a further solution of the present invention: the air source heat pump water heater body is internally connected to a rotating shaft, and the rotating shaft is connected to an axial flow fan through a bevel gear set. Multiple bevel gear sets are used to drive the rotation of multiple axial flow fans to inhale outside air and use the outside air to perform heat exchange treatment on the refrigerant, thereby achieving the purpose of energy saving. The air source heat pump water heater body is fixedly connected to the inside with a partition.

[0014] As a further solution of the present invention: a motor is fixedly connected to the partition, and the output end of the motor is transmission-connected to the rotating shaft through a bevel gear set, a compressor is fixedly connected to the top of the partition, a compressor connecting pipe is fixedly connected to the bottom of the compressor, and the inner sleeve and the compressor connecting pipe are interconnected, so as to facilitate the use of high-temperature and high-pressure refrigerant to melt the frost on the surface of the inner sleeve, and the compressor connecting pipe is interconnected with the heat exchanger body, and the high-temperature and high-pressure refrigerant is transported to the inside of the heat exchanger body through the compressor connecting pipe for heat exchange with the water inside the heat exchange tube.

[0015] As a further solution of the present invention: a water tank is fixedly connected to the interior of the air source heat pump water heater body, and the upper and lower ends of the heat exchange tube are interconnected with the water tank, and one side of the water tank is fixedly connected with a water inlet and a water outlet in sequence from top to bottom, and the water inlet and the water outlet both pass through the inner wall of the air source heat pump water heater body.

[0016] As a further solution of the present invention: a heat dissipation port is fixedly connected to the top of the air source heat pump water heater body, an air intake port is fixedly connected to one side of the air source heat pump water heater body, and an inspection door is fixedly connected to one side of the air source heat pump water heater body via a limit bolt. The inspection door is used to replace and repair parts inside the air source heat pump water heater body.

[0017] Beneficial effects of the present invention:

[0018] 1. The evaporator assembly is provided, and the U-shaped evaporation tube assembly is used to increase the speed of the refrigerant gas-liquid conversion. At the same time, the high-temperature and high-pressure refrigerant is transported to the surface of the inner sleeve by the provided delivery hole to perform heat and cold exchange on the frosted part of the inner sleeve surface, thereby melting the frost condensed on the surface of the inner sleeve to avoid the frost thickness being too thick and causing the overall device to not operate normally. Secondly, the air inlet slot is used to discharge the melted water to avoid frost and ice accumulation inside the outer sleeve again to affect subsequent work. Finally, the melted water can be separated by the outer sleeve and the inner sleeve, so as to facilitate the recovery and circulation of the refrigerant.

[0019] 2. By setting up the heat exchange assembly, the heat exchange assembly can be quickly disassembled and installed by utilizing the cooperation of the fixed seat, the sliding groove and the heat exchange assembly, so as to facilitate the cleaning of the heat exchange tube inside the heat exchange assembly, and avoid the damage of the heat exchange tube caused by the accumulation of internal scale for a long time, which further causes the loss of function of the entire heat pump water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 is a schematic cross-sectional structural diagram of an evaporator assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the evaporation tube assembly of the present invention;

[0025] Figure 5 The present invention Figure 3The enlarged structural diagram at A in the middle;

[0026] Figure 6 It is a schematic diagram of the structure of the heat exchange component of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the connection assembly of the present invention.

[0028] In the figure: 1, mounting base; 2, air source heat pump water heater body; 3, evaporator assembly; 31, evaporator body; 32, evaporator tube assembly; 321, outer sleeve; 322, inner sleeve; 323, delivery hole; 324, air inlet notch; 33, connecting plate; 34, delivery pipe; 35, input pipe; 36, air inlet; 37, drain pipe; 4, fixing seat; 5, sliding groove; 6, heat exchange assembly; 61, heat exchange body; 62, heat exchange tube; 63, connection assembly; 6 31. First flange; 632. Fixing bolt; 633. Second flange; 64. Connecting sleeve; 65. Sliding block; 66. Inspection panel; 7. Liquid storage tank; 8. Expansion valve; 9. Rotating shaft; 10. Bevel gear set; 11. Axial fan; 12. Partition; 13. Motor; 14. Compressor; 15. Compressor connecting pipe; 16. Solenoid valve; 17. Water storage tank; 18. Water inlet; 19. Water outlet; 20. Heat dissipation outlet; 21. Air intake; 22. Inspection door. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] See also Figures 1 to 5As shown, the present invention is an air source heat pump water heater with a built-in economizer on the water side heat exchanger, including a mounting base 1, which is used to provide a supporting surface to facilitate the installation of the air source heat pump water heater body 2, the bottom of the air source heat pump water heater body 2 is fixedly connected with a fixing seat 4, and the top of the fixing seat 4 is slidably connected with a heat exchange component 6 through a sliding groove 5. The heat exchange component 6 is slidably disassembled through the fixing seat 4 and the sliding groove 5, which is convenient for subsequent inspection and cleaning of the heat exchange component 6 after long-term use, and the operation is simple and fast. The top of the mounting base 1 is fixedly connected with the air source heat pump water heater body 2, the top of the air source heat pump water heater body 2 is fixedly connected with a heat dissipation port 20, and one side of the air source heat pump water heater body 2 is fixedly connected with an air intake port 21. Port 21, one side of the air source heat pump water heater body 2 is fixedly connected with an inspection door 22 through a limit bolt, and the inspection door 22 is used to replace and inspect the parts inside the air source heat pump water heater body 2. The air source heat pump water heater body 2 is fixedly connected with a water storage tank 17, and the upper and lower ends of the heat exchange tube 62 are interconnected with the water storage tank 17. One side of the water storage tank 17 is fixedly connected with a water inlet 18 and a water outlet 19 from top to bottom, and the water inlet 18 and the water outlet 19 both penetrate the inner wall of the air source heat pump water heater body 2. The air source heat pump water heater body 2 is internally rotatably connected with a rotating shaft 9, and the rotating shaft 9 is connected to an axial flow fan 11 through a bevel gear set 10, and multiple bevel gear sets 10 are used to drive multiple axial flow fans 11 rotates to inhale the outside air and use the outside air to perform heat exchange treatment on the refrigerant, thereby achieving the purpose of energy saving. The interior of the air source heat pump water heater body 2 is fixedly connected with a partition 12, and a motor 13 is fixedly connected to the partition 12, and the output end of the motor 13 is transmission connected to the rotating shaft 9 through a bevel gear set 10. The top of the partition 12 is fixedly connected with a compressor 14, and the bottom of the compressor 14 is fixedly connected with a compressor connecting pipe 15, and the inner sleeve 322 and the compressor connecting pipe 15 are interconnected, so that the frost on the surface of the inner sleeve 322 can be melted by using high-temperature and high-pressure refrigerant, and the compressor connecting pipe 15 is interconnected with the heat exchanger body 61, and the high-temperature and high-pressure refrigerant is transported to the heat exchanger through the compressor connecting pipe 15. The water inside the heat exchange tube 62 is heat-exchanged with the water inside the heat exchange tube 61. The air source heat pump water heater body 2 is fixedly connected to a liquid storage tank 7. An expansion valve 8 is fixedly connected to one side of the liquid storage tank 7. The refrigerant after heat exchange is stored by the liquid storage tank 7. The liquid refrigerant is processed and transported to the evaporator assembly 3 through the expansion valve 8 for the next circulation operation. The air source heat pump water heater body 2 is provided with an evaporator assembly 3. The refrigerant is cooled by the evaporator assembly 3 to facilitate the subsequent circulation of the refrigerant. The evaporator assembly 3 includes an evaporator body 31 fixedly connected to the air source heat pump water heater body 2. The evaporator body 31 is fixedly connected to an evaporator tube assembly 32. The evaporator tube assembly 32 is U-shaped.The U-shaped setting increases the heat exchange contact area between the refrigerant and the ice, achieving a better deicing effect. One side of the evaporator tube assembly 32 is fixedly connected to a connecting plate 33 through a delivery pipe 34, and the connecting plate 33 and the inner sleeve 322 are interconnected. The connecting plate 33 and the delivery pipe 34 are used to centrally collect and process the used refrigerant, thereby realizing the circulation of the refrigerant to avoid waste. The top of the evaporator tube assembly 32 is fixedly connected to an input pipe 35, and one side of the input pipe 35 is fixedly connected to an electromagnetic valve 16. The electromagnetic valve 16 is used to control the discharge of the refrigerant, and further defrost the evaporator tube assembly 32. A plurality of air inlets 36 are opened on one side of the evaporator body 31, and a drain pipe 37 is fixedly connected to the bottom of the evaporator body 31. The melted water is centrally discharged and collected through the provided drain pipe 37;

[0032] The evaporation tube assembly 32 includes an outer sleeve 321 fixedly connected to the evaporator body 31, and the inner sleeve 322 is fixedly connected to the inner sleeve 321, and there is a gap between the outer sleeve 321 and the inner sleeve 322. The inner wall of the outer sleeve 321 is provided with a plurality of conveying holes 323, and the plurality of conveying holes 323 are used to transport the introduced refrigerant to further melt the frost on the surface of the inner sleeve 322. The inner part of the outer sleeve 321 is provided with a plurality of air inlet slots 324. On the one hand, the air inlet slots 324 are used to drain the outside air to absorb the heat in the outside air, and on the other hand, the air inlet slots 324 are used to discharge the melted water. 3. The U-shaped evaporator tube assembly 32 is used to increase the speed of the refrigerant gas-liquid conversion. At the same time, the delivery hole 323 is used to deliver the high-temperature and high-pressure refrigerant to the surface of the inner sleeve 322 to perform heat exchange on the frosted part of the surface of the inner sleeve 322, thereby melting the frost condensed on the surface of the inner sleeve 322 to avoid the frost thickness being too thick and causing the overall device to not operate normally. Secondly, the air inlet slot 324 is used to discharge the melted water to avoid frost and ice accumulation inside the outer sleeve 321 again to affect subsequent work. Finally, the melted water can be separated by the outer sleeve 321 and the inner sleeve 322, so as to facilitate the recovery and circulation of the refrigerant.

[0033] Embodiment 2

[0034] See also Figure 6 to Figure 7As shown, this embodiment includes all the structures in the first embodiment. The present invention is an air source heat pump water heater with a built-in economizer in a water-side heat exchanger. The heat exchange component 6 includes a heat exchanger body 61 slidably connected to the sliding groove 5. The interior of the heat exchanger body 61 is fixedly connected with a heat exchange tube 62, and the heat exchange tube 62 is also U-shaped. Such a setting can increase the contact area between cold water and high-temperature and high-pressure refrigerant, thereby improving the heat exchange efficiency. Both ends of the heat exchange tube 62 are fixedly connected with a connecting component 63, and the connecting component 63 includes a first flange 631 fixedly connected to the heat exchange tube 62. One side of the first flange 631 is connected by The fixing bolt 632 is fixedly connected to the second flange 633, and the connecting assembly 63 is used to disassemble the parts connected to the heat exchange assembly 6. The structure is simple and easy to operate. The top of the heat exchanger body 61 is fixedly connected to the connecting sleeve 64, and the bottom of the heat exchanger body 61 is fixedly connected to the sliding block 65. One side of the heat exchanger body 61 is fixedly connected to the inspection plate 66 through a limit bolt. The inspection plate 66 is used to inspect the heat exchange tube 62 inside the heat exchanger body 61 to avoid aging of the heat exchange tube 62 due to the passage of time, and further prevent the aging of the heat exchange tube 62 from affecting the overall work.

[0035] The working principle of the present invention is as follows: first, the water to be heated is discharged into the water storage tank 17 through the water inlet 18, and then the compressor 14 and the partition 12 are started. The compressor 14 compresses the refrigerant to form a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged into the heat exchanger body 61 through the compressor connecting pipe 15, and the cold water in the heat exchange tube 62 is heat-exchanged, so that the cold water is heated and circulated to the water storage tank 17 for storage again. The refrigerant cooled down after the heat exchange treatment continues to become liquid under the action of pressure, and is further stored in the liquid storage tank 7. The liquid refrigerant enters the evaporator assembly 3 through the action of the expansion valve 8. Due to the sudden drop in pressure in the evaporator assembly 3, the liquid refrigerant evaporates rapidly again and becomes gaseous. Under the action of the motor 13, the action of the bevel gear set 10 is used to drive the work of the multiple rotating shafts 9, so that the outside air is transported to the evaporator assembly 3. The air input from the outside is absorbed by the refrigerant in the evaporator assembly 3 and performs the next cycle under the action of the compressor 14.

[0036] After long-term operation, a certain amount of frost will form on the surface of the inner sleeve 322 under the action of the refrigerant. After multiple cycles, the frost formed by the refrigerant will become thicker and thus form ice. At this time, the solenoid valve 16 is opened to use the input pipe 35 to transport the high-temperature and high-pressure refrigerant generated by the compressor 14 to the delivery hole 323 to melt the frost formed on the surface of the inner sleeve 322. The melted water will drip through the air inlet notch 324 to the bottom of the evaporator body 31 and be discharged through the drain pipe 37. The exchanged refrigerant flows into the inner sleeve 322 through the connection plate 33 and the delivery pipe 34 for recycling.

[0037] After a long period of work, the heat exchange component 6 inside the air source heat pump water heater body 2 needs to be inspected and cleaned. At this time, the first flange 631 and the fixing bolts 632 are separated by the fixing bolts 632, so that the heat exchange component 6 as a whole can be taken out by using the sliding block 65 and the sliding groove 5, and then the limit bolts on the inspection plate 66 are removed to clean the heat exchange tubes 62 inside the heat exchanger body 61. After cleaning, the heat exchange component 6 can be reinstalled using the first flange 631 and the fixing bolts 632.

[0038] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An air source heat pump water heater with a built-in economizer in a water side heat exchanger, comprising a mounting base, the top of which is fixedly connected to a main body of the air source heat pump water heater, characterized in that: An evaporator assembly is arranged inside the main body of the air source heat pump water heater, and the evaporator assembly includes an evaporator main body fixedly connected to the main body of the air source heat pump water heater, an evaporator tube assembly is fixedly connected inside the evaporator main body, one side of the evaporator tube assembly is fixedly connected to a connection plate through a delivery pipe, an input pipe is fixedly connected to the top of the evaporator tube assembly, one side of the input pipe is fixedly connected to a solenoid valve, a plurality of air inlets are opened on one side of the evaporator main body, and a drain pipe is fixedly connected to the bottom of the evaporator main body; The evaporation tube assembly comprises an outer sleeve fixedly connected to the evaporator body, an inner sleeve fixedly connected to the inside of the outer sleeve, the inner sleeve and the compressor connecting pipe are communicated with each other, a plurality of conveying holes are opened on the inner wall of the outer sleeve, and a gap is formed between the outer sleeve and the inner sleeve; The outer sleeve is provided with a plurality of air inlet slots for draining the outside air to absorb the heat in the outside air and for discharging the melted water. The U-shaped evaporator tube assembly is used to increase the speed of the refrigerant gas-liquid conversion, and the delivery hole is used to deliver the high-temperature and high-pressure refrigerant to the surface of the inner sleeve to exchange heat with the frosted part of the inner sleeve surface. One side of the evaporator tube assembly is fixedly connected to a connecting plate through a delivery pipe, and the connecting plate and the inner sleeve are interconnected. The solenoid valve uses an input pipe to deliver the high-temperature and high-pressure refrigerant generated by the compressor to the delivery hole to melt the frost formed on the surface of the inner sleeve. The melted water will drip through the air inlet slot to the bottom of the evaporator body and be discharged through the drain pipe. The refrigerant after heat exchange flows into the inner sleeve through the connecting plate and the delivery pipe for circulation and recycling.

2. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 1, characterized in that: The bottom of the air source heat pump water heater body is fixedly connected with a fixing seat, and the top of the fixing seat is slidably connected with a heat exchange component through a sliding groove.

3. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 2, characterized in that: The heat exchange assembly includes a heat exchanger body slidably connected to the sliding groove, a heat exchange tube is fixedly connected inside the heat exchanger body, both ends of the heat exchange tube are fixedly connected to the connecting assembly, the top of the heat exchanger body is fixedly connected to the connecting sleeve, the bottom of the heat exchanger body is fixedly connected to the sliding block, and one side of the heat exchanger body is fixedly connected to the inspection plate through a limit bolt.

4. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 3, characterized in that: The connection assembly comprises a first flange fixedly connected to the heat exchange tube, and one side of the first flange is fixedly connected to a second flange via fixing bolts.

5. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 2, characterized in that: A liquid storage tank is fixedly connected to the interior of the air source heat pump water heater body, and an expansion valve is fixedly connected to one side of the liquid storage tank.

6. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 5, characterized in that: The air source heat pump water heater body is rotatably connected to a rotating shaft inside, and an axial flow fan is transmission-connected to the rotating shaft via a bevel gear set. A partition is fixedly connected to the inside of the air source heat pump water heater body.

7. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 6, characterized in that: A motor is fixedly connected to the partition, and the output end of the motor is transmission-connected to the rotating shaft through a bevel gear set. A compressor is fixedly connected to the top of the partition, and a compressor connecting pipe is fixedly connected to the bottom of the compressor.

8. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 6, characterized in that: A water storage tank is fixedly connected to the interior of the air source heat pump water heater body, and a water inlet and a water outlet are fixedly connected to one side of the water storage tank in sequence from top to bottom.

9. The air source heat pump water heater with a water-side heat exchanger and a built-in economizer according to claim 8, characterized in that: A heat dissipation port is fixedly connected to the top of the air source heat pump water heater body, an air intake port is fixedly connected to one side of the air source heat pump water heater body, and an inspection door is fixedly connected to one side of the air source heat pump water heater body via a limit bolt.

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