Air source heat pump water heater

Abstract

The present invention provides an air source heat pump water heater, comprising a shell, a water module, and a fixed module, wherein the fixed module is detachably arranged in the shell, at least part of the outer wall structure of the fixed module abuts against the inner wall of the shell, a trough structure is arranged inside the fixed module, and at least part of the components of the water module are arranged inside the fixed module and snap-connected with the trough structure; the present invention can firmly fix the water module by setting the fixed module, eliminating the conventional fixed structure in the conventional air source heat pump water heater, which is conducive to simplifying the structural layout of the relevant components inside the heat pump water heater, and at the same time can greatly improve the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater, and reduce the difficulty of operation of the heat pump water heater during production assembly and subsequent maintenance and disassembly; at the same time, the wrapping of the water module by the fixed module can provide buffering protection, vibration reduction and noise reduction for the relevant components of the water module.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to an air source heat pump water heater. Background Art

[0002] As people's living standards continue to improve, water heaters have gradually become an indispensable electrical appliance in their daily lives, with a variety of structural forms. With the continuous improvement of industrial design levels and the application of new processes, new materials, and new designs in water heaters, not only have a variety of water heaters been developed, such as gas water heaters, electric water heaters, heat pump water heaters, etc., but also corresponding structural optimizations have been carried out.

[0003] Taking heat pump water heaters as an example, they often provide hot water to users through heat exchange between refrigerant and water under the action of a heat pump, which can not only meet the heating needs of the room, but also meet the daily hot water needs of the family. In existing heat pump water heaters, water pipes, refrigerant pipes, water pumps, expansion tanks, heat exchangers, electric heaters, water flow switches, safety valves and other related components are often arranged. When arranging and assembling the related pipes and components, the internal structure of existing heat pump water heaters is often relatively messy. At the same time, each component needs to be fixed and assembled one by one inside the heat pump water heater, and even an additional fixing frame structure needs to be set inside to fix the corresponding components. This makes the existing heat pump water heaters less convenient to disassemble and assemble, which not only increases the difficulty of production and assembly of heat pump water heaters, but also makes it inconvenient to produce, assemble and maintain them later. It is also not conducive to simplifying the structural layout of the relevant components inside the heat pump water heater. Summary of the Invention

[0004] In view of this, the present invention aims to propose an air source heat pump water heater to solve the problems in the prior art of the relatively messy layout of internal components of the heat pump water heater and the poor convenience of disassembly and assembly.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An air source heat pump water heater includes a shell, a water module, and a fixed module. The fixed module is arranged in the shell in a detachable manner. At least part of the outer wall structure of the fixed module abuts the inner wall of the shell. A trough structure is arranged inside the fixed module. At least part of the components of the water module are arranged inside the fixed module and are snap-fitted with the trough structure to achieve fixed assembly of the water module. Therefore, the present invention can be based on the premise of not needing to modify the water module and the shell, by setting a detachable fixed module, while the fixed module wraps and clamps the water module, the fixed module abuts against the shell, and it can be regarded as filling the space between the water module and the shell by the fixed module, which makes it possible to firmly fix the water module only by the fixed module under the limited effect of the limited space inside the shell, eliminating the conventional fixing structure in the conventional air source heat pump water heater, such as fasteners, fixed frames (beams), pipe clamps, pipeline supports and other structures, which is conducive to simplifying the structural layout of the relevant components inside the heat pump water heater, and at the same time greatly improving the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater, and reducing the difficulty of operation during the production assembly and subsequent maintenance and disassembly of the heat pump water heater. At the same time, the wrapping effect of the fixed module on the water module can also buffer the vibration that may occur in the water module during operation, which not only plays a buffering and protective role for the relevant components of the water module, but also plays a role in vibration reduction and noise reduction, and to a certain extent isolates the water module from the noise that may be generated during operation.

[0007] Furthermore, the fixed module includes a lining module and a pressing module. The lining module is abutted against the bottom plate of the shell, the lining module is provided with a first trough body, and the pressing module is provided with a second trough body. At least part of the components of the water module are clamped with the first trough body, and the second trough body is clamped with at least part of the components of the water module, and the water module can be pressed into the first trough body; thus, under the joint action of the first trough body and the second trough body, the fixed module can not only be assembled simply and conveniently, but also can firmly fix the water module, eliminating the conventional fixing structure in the conventional air source heat pump water heater, which is beneficial to improving the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater.

[0008] Furthermore, the pressing module includes at least two submodules, and any two adjacent submodules are connected in a detachable manner. Specifically, the pressing module includes a first module and a second module, the first module has a first splicing surface, the second module has a second splicing surface, and the first splicing surface and the second splicing surface are connected in a detachable manner. Therefore, by dividing the pressing module into at least two submodules, a complete pressing module can be formed after the submodules are spliced ​​together, which not only ensures the overall assembly performance of the pressing module to the water module, but also for a single submodule, the clamping force points are relatively reduced, so that people can apply a smaller force to each submodule to disassemble the pressing module, thereby realizing convenient disassembly between the fixed module and the water module.

[0009] Furthermore, the water module includes a refrigerant pipeline, a water inlet pipeline, a heat exchanger, a water flow pipeline, an electric heater, a water outlet pipeline, an exhaust valve, and an expansion tank. A water pump is provided in the water inlet pipeline, and a flow switch is provided in the water flow pipeline. On the one hand, this ensures the normal operation of the water module, and on the other hand, it ensures that the water module can use the refrigerant to exchange heat with water to meet people's demand for hot water.

[0010] Furthermore, the base lining module is provided with an expansion tank fixing groove, and the expansion tank fixing groove is clamped with the expansion tank; the base lining module is provided with a heat exchanger fixing groove, and the pressing module is provided with a heat exchanger pressing groove, and the heat exchanger is clamped with the heat exchanger fixing groove and the heat exchanger pressing groove respectively; the pressing module is provided with an electric heater fixing groove, and the electric heater fixing groove is clamped with the electric heater, so that by respectively providing the groove body structure on the base lining module and the pressing module, the various components in the water module can be assembled and fixed simply and conveniently.

[0011] Furthermore, the base lining module is provided with a refrigerant pipe fixing groove, and the refrigerant pipe fixing groove is clamped with the pipe body structure of at least part of the length of the refrigerant pipeline; the pressing module is provided with a water inlet pipe fixing groove, and the water inlet pipe fixing groove is clamped with the pipe body structure of at least part of the length of the water inlet pipeline; the base lining module is provided with a water outlet pipe fixing groove, and the pressing module is provided with a water outlet pipe pressing groove, and the water outlet pipeline is clamped with the water outlet pipe fixing groove and the water outlet pipe pressing groove respectively; the pressing module is provided with a water pipe fixing groove, and the water pipe fixing groove is clamped with the water pipe, so that by respectively providing the groove body structures on the base lining module and the pressing module, the various pipelines in the water module can be assembled and fixed simply and conveniently.

[0012] Furthermore, the pressing module is provided with a flow switch fixing groove and an exhaust valve fixing groove. The flow switch fixing groove is clamped with the flow switch, and the exhaust valve fixing groove is clamped with the exhaust valve, which can simply and conveniently realize the fixation of components such as the flow switch and the exhaust valve.

[0013] Furthermore, the heat exchanger fixing groove is connected to the refrigerant pipe fixing groove; one end of the water pipe fixing groove is connected to the heat exchanger pressing groove, and the other end is connected to the electric heater fixing groove; the water inlet pipe fixing groove is connected to the heat exchanger pressing groove, which can effectively avoid spatial interference during the wiring and connection process of related pipelines in the water module.

[0014] The water module includes a pipeline integrated disk, and the water inlet pipe, water outlet pipe, and refrigerant pipe all pass through the pipeline integrated disk and are all connected to the pipeline integrated disk, so that the pipeline structure in the water module is uniformly gathered by the pipeline integrated disk. To a certain extent, it can avoid the occurrence of messy internal pipeline layout of the heat pump water heater, improve the overall modularity of the water module, and facilitate the overall assembly of the water module.

[0015] Compared with the prior art, the air source heat pump water heater described in the present invention has the following advantages:

[0016] The air source heat pump water heater described in the present invention, by providing a detachable fixed module, can wrap and clamp the water module with the fixed module without making any changes to the water module and the shell. At the same time, the fixed module abuts against the shell, and it can be regarded as that the space between the water module and the shell is filled by the fixed module. This makes it possible to firmly fix the water module only by the fixed module under the limiting effect of the limited space inside the shell, eliminating the conventional fixing structures in conventional air source heat pump water heaters, such as fasteners, fixed frames (beams), pipe clamps, pipeline supports and other structures, which is conducive to simplifying the structural layout of related components inside the heat pump water heater, and at the same time can greatly improve the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater, and reduce the operational difficulty of the heat pump water heater during production assembly and subsequent maintenance and disassembly.

[0017] At the same time, the wrapping effect of the fixed module on the water module can also cushion the vibration that may occur in the operation of the water module. It can not only provide buffering protection for the relevant components of the water module, but also reduce vibration and noise, and to a certain extent isolate the water module from the noise that may be generated during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural diagram of an air source heat pump water heater (after removing the top cover and the electrical control box) according to an embodiment of the present invention;

[0020] Figure 2This is an exploded view of an air source heat pump water heater according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a water module in an air source heat pump water heater according to an embodiment of the present invention;

[0022] Figure 4 This is a structural schematic diagram of a bottom lining module in an air source heat pump water heater according to an embodiment of the present invention;

[0023] Figure 5 This is a structural schematic diagram of a press-fit module in an air source heat pump water heater according to an embodiment of the present invention;

[0024] Figure 6 This is a structural schematic diagram of the second module in an air source heat pump water heater according to an embodiment of the present invention;

[0025] Figure 7 This is a structural schematic diagram of the first module in an air source heat pump water heater according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Top cover; 2. Electric control box; 3. Fixing module; 31. Bottom lining module; 311. Expansion tank fixing slot; 312. Heat exchanger fixing slot; 313. Refrigerant pipe fixing slot; 314. Outlet pipe fixing slot; 315. Inlet pipe avoidance slot; 32. Pressing module; 321. Heat exchanger pressing slot; 322. Electric heater fixing slot; 323. Inlet pipe fixing slot; 324. Outlet pipe pressing slot; 325. Water pipe fixing slot; 326. Flow switch fixing slot; 327. Exhaust valve Fixed groove; 33. First module; 331. First joint surface; 34. Second module; 341. Second joint surface; 4. Water module; 41. Water pump; 42. Heat exchanger; 43. Flow switch; 44. Exhaust valve; 45. Electric heater; 46. Expansion tank; 47. Pressure gauge; 48. Safety valve; 49. Pipeline integrated disk; 5. Shell; 51. Assembly edge; 52. Bottom plate; 6. Water inlet pipe; 7. Water outlet pipe; 8. Refrigerant pipe; 9. Drain pipe; 10. Water pipe. DETAILED DESCRIPTION

[0028] The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] In the prior art, the internal structure of the heat pump water heater is often relatively messy, and each component needs to be fixed and assembled one by one inside the heat pump water heater, and even an additional fixed frame structure needs to be set inside to fix the corresponding components. This makes the existing heat pump water heater less convenient for disassembly and assembly, which not only increases the difficulty of production and assembly of the heat pump water heater, but also is not convenient for production assembly and subsequent maintenance and disassembly, and is not conducive to simplifying the structural layout of related components inside the heat pump water heater.

[0032] In order to solve the problem that the internal structure of the heat pump water heater in the prior art is relatively messy and its disassembly and assembly is relatively poor, this embodiment proposes an air source heat pump water heater, as shown in the attached Figure 1-7 As shown, the air source heat pump water heater includes a shell 5, a water module 4, and a fixed module 3. The fixed module 3 is arranged in the shell 5 in a detachable manner. At least part of the outer wall structure of the fixed module 3 abuts against the inner wall of the shell 5. A trough structure is arranged inside the fixed module 3. At least part of the components of the water module 4 are arranged inside the fixed module 3 and are snap-connected with the trough structure to achieve fixed assembly of the water module 4. In conventional air source heat pump water heaters, the water module 4 is often arranged in the shell 5. The present application can be carried out without making any changes to the water module 4 and the shell 5 by setting a detachable fixed module 3. While the fixed module 3 wraps and clamps the water module 4, the fixed module 3 abuts against the shell 5. It can be regarded as that the space between the water module 4 and the shell 5 is filled by the fixed module 3. This makes it possible to firmly fix the water module 4 only by the fixed module 3 under the limited effect of the limited space inside the shell 5, eliminating the conventional fixing structures in conventional air source heat pump water heaters, such as fasteners, fixed frames (beams), pipe clamps, pipeline supports and other structures, which is conducive to simplifying the structural layout of related components inside the heat pump water heater, and at the same time can greatly improve the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater, and reduce the operational difficulty of the heat pump water heater during production assembly and subsequent maintenance and disassembly. At the same time, the wrapping effect of the fixed module 3 on the water module 4 can also cushion the vibration that may occur in the operation of the water module 4, which not only plays a buffering and protective role for the relevant components of the water module 4, but also plays a role in reducing vibration and noise, and to a certain extent isolates the water module 4 from the noise that may be generated during operation.

[0033] The coordination between the fixed module 3 and the water module 4 is similar to the coordination between a mold and a molded object in daily life. For ease of introduction, the structure of the water module 4 will be described first.

[0034] The water module 4 can directly adopt the relevant structural components of the air source heat pump water heater in the prior art. In addition to the refrigerant pipeline 8, it also includes a water inlet pipeline 6, a heat exchanger 42, a water flow pipeline 10, an electric heater 45, and a water outlet pipeline 7, which are connected in sequence. The water inlet pipeline 6 is provided with a water pump 41, which provides the main power for the water flow. The heat exchanger 42 is also connected to the refrigerant pipeline 8 and is preferably a plate heat exchanger. The refrigerant and water are heat exchanged in the heat exchanger 42 to obtain hot water, which is then delivered to the user through the electric heater 45. The electric heater 45 can be activated in special circumstances such as when the external environment is relatively harsh, the heat pump fails, or the user has a high heating demand. The water flow pipeline 10 is provided with a flow switch 43 to ensure that the unit is shut down in a timely manner when the water volume in the pipeline is low, preventing damage to the water pump 41 due to idling due to flow interruption. The water outlet pipeline 7 is provided with a pressure gauge 47 to monitor the water pressure in the system at any time, making it convenient for users to replenish the water supply system. In addition, an exhaust valve 44 and an expansion tank 46 can be provided in the water pipe of the entire water module 4; the exhaust valve 44 is preferably installed at the highest point of the water module 4, and automatically exhausts when there is air in the water circulating thereto, to prevent the air in the water system from affecting the overall heating effect, and at the same time prevent the water system from making wheezing sounds due to the air; the expansion tank 46 has pre-charge pressure, which can be used to balance the water system pressure when the water pressure in the water module 4 is relatively high, to prevent damage to other components caused by excessive pressure; a safety valve 48 is also provided in the water outlet pipe 7, which can automatically drain water in time when the water pressure is higher, to reduce the water pressure in the system, and to ensure the safe and stable operation of the water module 4.

[0035] In order to optimize the overall structural layout of the water module 4, the present application further includes a pipe integration tray 49 on the basis of the above-mentioned water module 4. The water inlet pipe 6, the water outlet pipe 7, and the refrigerant pipe 8 all pass through the pipe integration tray 49, so that the pipe structure in the water module 4 is uniformly collected by the pipe integration tray 49. To a certain extent, it can avoid the situation where the internal pipelines of the heat pump water heater are arranged in a disorderly manner, improve the overall modularity of the water module 4, and facilitate the overall assembly of the water module 4. In addition, the pipe integration tray 49 is provided with a drain pipe 9, which is connected to the outside world through a pipe structure and is used to discharge the water collected on the pipe integration tray 49 inside the air source heat pump water heater to the outside world.

[0036] As for the fixed module 3, it includes a lining module 31 and a pressing module 32. The lining module 31 is in contact with the bottom plate 52 of the shell 5. The lining module 31 is provided with a first trough body, and the pressing module 32 is provided with a second trough body. At least part of the components of the water module 4 are clamped with the first trough body, and the second trough body is clamped with at least part of the components of the water module 4, and can firmly press the water module 4 into the first trough body. Therefore, under the joint action of the first trough body and the second trough body, the fixed module 3 can not only be assembled simply and conveniently, but also can firmly fix the water module 4, eliminating the conventional fixing structure in the conventional air source heat pump water heater, which is beneficial to improving the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater.

[0037] The backing module 31 and the pressing module 32 are independent components that can be spliced ​​together. They are preferably integrally injection-molded, which not only facilitates processing and manufacturing but also helps ensure mechanical strength. The backing module 31 and the pressing module 32 are made of plastic, preferably PP, which is not only lightweight and low-cost, but also has excellent vibration and noise reduction properties.

[0038] Regarding the assembly between the corresponding tank structure and the relevant parts of the water module 4, specifically regarding the arrangement of the first tank structure and the second tank structure, as shown in the attached Figure 4-5As shown, for the expansion tank 46, the base lining module 31 is provided with an expansion tank fixing groove 311, and the expansion tank fixing groove 311 is clamped with the expansion tank 46 for fixing the expansion tank 46; for the heat exchanger 42, the base lining module 31 is provided with a heat exchanger fixing groove 312, and the pressing module 32 is provided with a heat exchanger pressing groove 321, and the heat exchanger 42 is clamped with the heat exchanger fixing groove 312 and the heat exchanger pressing groove 321 respectively to fix the heat exchanger 42; for the refrigerant pipeline 8, the base lining module 31 is provided with a refrigerant pipe fixing groove 313, and the refrigerant pipe fixing groove 313 is clamped with the pipe body structure of at least part of the length of the refrigerant pipeline 8 for fixing the refrigerant pipeline 8. For the outlet pipe 7, the bottom lining module 31 is provided with a water outlet pipe fixing groove 314, and the pressing module 32 is provided with a water outlet pipe pressing groove 324. The outlet pipe 7 is respectively connected with the water outlet pipe fixing groove 314 and the water outlet pipe pressing groove 324 to fix the water outlet pipe 7; for the water inlet pipe 6, the pressing module 32 is provided with a water inlet pipe fixing groove 323, and the water inlet pipe fixing groove 323 is connected with the pipe body structure of at least part of the length of the water inlet pipe 6 to fix the water inlet pipe 6. At the same time, due to spatial interference, the bottom lining module 31 is provided with a water inlet pipe avoidance groove 315, which avoids the water inlet pipe 6 in space while also being connected with the water inlet pipe 6. , further improving the assembly reliability of the water inlet pipe 6; for components such as the electric heater 45, the water flow pipe 10, the flow switch 43, and the exhaust valve 44, the pressing module 32 is provided with an electric heater fixing groove 322, a water flow pipe fixing groove 325, a flow switch fixing groove 326, and an exhaust valve fixing groove 327. The electric heater fixing groove 322 is clamped with the electric heater 45, the water flow pipe fixing groove 325 is clamped with the water flow pipe 10, the flow switch fixing groove 326 is clamped with the flow switch 43, and the exhaust valve fixing groove 327 is clamped with the exhaust valve 44, so as to achieve the fixation of components such as the electric heater 45, the water flow pipe 10, the flow switch 43, and the exhaust valve 44.

[0039] In addition, based on the relevant trough structure, the corresponding trough structure can also be connected according to the actual pipeline direction and connectivity; for example: in the lining module 31, the heat exchanger fixing groove 312 is connected to the refrigerant pipe fixing groove 313 to avoid spatial interference with the connection between the refrigerant pipeline 8 and the heat exchanger 42; in the pressing module 32, one end of the water pipe fixing groove 325 is connected to the heat exchanger pressing groove 321, and the other end is connected to the electric heater fixing groove 322 to avoid spatial interference with the direction and connectivity of the water pipe 10, and the water inlet pipe fixing groove 323 is connected to the heat exchanger pressing groove 321 to avoid spatial interference with the connection between the water inlet pipeline 6 and the heat exchanger 42.

[0040] Based on the above structure of the present application, during assembly, the lining module 31 can be first installed into the shell 5, and then the pre-installed water module 4 can be assembled with the lining module 31 as a whole, and the corresponding components can be assembled with the first groove body of the lining module 31. After that, the second groove body of the pressing module 32 is aligned with the corresponding components of the water module 4, and force is applied to the pressing module 32 so that the pressing module 32 and the lining module 31 can jointly complete the clamping and fixing of the corresponding components of the water module 4 to realize the assembly of the water module 4; this assembly process does not require the setting of additional conventional fixing structures, which can greatly improve the convenience and efficiency of disassembly and assembly of the internal components of the heat pump water heater.

[0041] The pressing module 32 can be a whole plate structure, but considering that there may be many points of engagement between the whole plate and the water module 4 during the disassembly process, it is not easy to disassemble. For this reason, the present application sets the pressing module 32 as a split structure while maintaining the overall structure of the pressing module 32 unchanged, including at least two submodules, and any two adjacent submodules are connected in a detachable manner. Thus, by dividing the pressing module 32 into at least two submodules, a complete pressing module 32 can be formed after the submodules are spliced. This not only ensures the overall assembly performance of the pressing module 32 on the water module 4, but also reduces the number of points of engagement for each submodule, so that people can apply a smaller force to each submodule to disassemble the pressing module 32, thereby realizing convenient disassembly between the fixed module 3 and the water module 4. At the same time, during assembly, each submodule can be assembled with the water module 4 one by one, or each submodule can be spliced ​​into a complete pressing module 32 and then assembled with the water module 4.

[0042] In this application, as attached Figure 6-7 As shown, the pressing module 32 includes a first module 33 and a second module 34. The first module 33 has a first splicing surface 331, and the second module 34 has a second splicing surface 341. The first splicing surface 331 and the second splicing surface 341 are connected in a detachable manner; preferably, the first splicing surface 331 and the second splicing surface 341 are snap-fitted, and after the first module 33 and the second module 34 are spliced ​​together, the complete structure of the pressing module 32 can be obtained.

[0043] For the air source heat pump water heater, the shell 5 includes a top cover 1, and an electric control box 2 is arranged between the top cover 1 and the pressing module 32. The shell 5 is provided with an assembly edge 51, and the electric control box 2 is connected to the assembly edge 51, for example: the electric control box 2 is fixedly connected to the assembly edge 51 through a hinge structure; one side of the electric control box 2 abuts against the pressing module 32, and the other side abuts against the top cover 1, so that on the basis of realizing the assembly of the electric control box 2, the assembly reliability of the fixed module 3 to the water module 4 can be ensured; of course, for the assembly of the electric control box 2, the existing technology can also be used to assemble the electric control box 2 at the top, bottom, or even other conventional assembly positions of the air source heat pump water heater. In view of the fact that it is the existing technology, it will not be elaborated here.

[0044] In the present invention, for any heat pump water heater, the air source heat pump water heater described in this embodiment can be adopted, and based on the relevant structure and assembly relationship provided in this embodiment, the air source heat pump water heater also includes conventional components of heat pump water heaters including structures such as the heat pump system; since they are all existing technologies, they will not be described in detail here.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air source heat pump water heater, characterized in that: The air source heat pump water heater comprises a shell (5), a water module (4), and a fixed module (3); the fixed module (3) is arranged in the shell (5) in a detachable manner; at least part of the outer wall structure of the fixed module (3) abuts against the inner wall of the shell (5); a trough structure is arranged inside the fixed module (3); at least part of the components of the water module (4) are arranged inside the fixed module (3) and snap-fitted with the trough structure to achieve fixed assembly of the water module (4); the space between the water module (4) and the shell (5) is filled by the fixed module (3), so that under the limited space inside the shell (5), the water module (4) can be securely fixed only by the fixed module (3).

2. The air source heat pump water heater according to claim 1, characterized in that: The fixed module (3) comprises a lining module (31) and a pressing module (32); the lining module (31) is in contact with the bottom plate (52) of the housing (5); the lining module (31) is provided with a first trough body; the pressing module (32) is provided with a second trough body; at least part of the components of the water module (4) are snap-fitted with the first trough body; the second trough body is snap-fitted with at least part of the components of the water module (4), and the water module (4) can be press-fitted into the first trough body.

3. The air source heat pump water heater according to claim 2, characterized in that: The pressing module (32) comprises at least two submodules, and any two adjacent submodules are connected in a detachable manner.

4. The air source heat pump water heater according to claim 3, characterized in that: The pressing module (32) comprises a first module (33) and a second module (34); the first module (33) has a first splicing surface (331); the second module (34) has a second splicing surface (341); the first splicing surface (331) and the second splicing surface (341) are connected in a detachable manner.

5. The air source heat pump water heater according to claim 2, characterized in that: The water module (4) comprises a refrigerant pipeline (8), a water inlet pipeline (6), a heat exchanger (42), a water flow pipeline (10), an electric heater (45), a water outlet pipeline (7), an exhaust valve (44), and an expansion tank (46). A water pump (41) is provided in the water inlet pipeline (6), and a flow switch (43) is provided in the water flow pipeline (10).

6. The air source heat pump water heater according to claim 5, characterized in that: The base lining module (31) is provided with an expansion tank fixing groove (311), and the expansion tank fixing groove (311) is clamped with the expansion tank (46); the base lining module (31) is provided with a heat exchanger fixing groove (312), and the pressing module (32) is provided with a heat exchanger pressing groove (321), and the heat exchanger (42) is clamped with the heat exchanger fixing groove (312) and the heat exchanger pressing groove (321) respectively; the pressing module (32) is provided with an electric heater fixing groove (322), and the electric heater fixing groove (322) is clamped with the electric heater (45).

7. The air source heat pump water heater according to claim 6, characterized in that: The bottom lining module (31) is provided with a refrigerant pipe fixing groove (313), and the refrigerant pipe fixing groove (313) is clamped with the pipe body structure of at least a part of the length of the refrigerant pipeline (8); the pressing module (32) is provided with a water inlet pipe fixing groove (323), and the water inlet pipe fixing groove (323) is clamped with the pipe body structure of at least a part of the length of the water inlet pipeline (6); the bottom lining module (31) is provided with a water outlet pipe fixing groove (314), and the pressing module (32) is provided with a water outlet pipe pressing groove (324), and the water outlet pipeline (7) is clamped with the water outlet pipe fixing groove (314) and the water outlet pipe pressing groove (324) respectively; the pressing module (32) is provided with a water flow pipe fixing groove (325), and the water flow pipe fixing groove (325) is clamped with the water flow pipeline (10).

8. The air source heat pump water heater according to claim 7, characterized in that: The heat exchanger fixing groove (312) is in communication with the refrigerant pipe fixing groove (313); one end of the water pipe fixing groove (325) is in communication with the heat exchanger pressing groove (321), and the other end is in communication with the electric heater fixing groove (322); the water inlet pipe fixing groove (323) is in communication with the heat exchanger pressing groove (321).

9. The air source heat pump water heater according to claim 6, characterized in that: The pressing module (32) is provided with a flow switch fixing groove (326) and an exhaust valve fixing groove (327); the flow switch fixing groove (326) is engaged with the flow switch (43); and the exhaust valve fixing groove (327) is engaged with the exhaust valve (44).

10. The air source heat pump water heater according to claim 5, characterized in that: The water module (4) includes a pipeline integrated disk (49), and the water inlet pipeline (6), the water outlet pipeline (7), and the refrigerant pipeline (8) all pass through the pipeline integrated disk (49) and are all connected to the pipeline integrated disk (49).

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