Air source heat pump system

Abstract

The utility model discloses an air source heat pump system which comprises a compressor, a heat recovery heat exchanger, a first reversing valve, a liquid storage container and an air conditioner side heat exchanger. The heat recovery heat exchanger comprises a refrigerant inlet and a refrigerant outlet communicated with the refrigerant inlet. The refrigerant flows out of the compressor and then passes through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the liquid storage container and the air conditioner side heat exchanger to form a refrigerant loop for refrigeration, and meanwhile all heat of the refrigerant is subjected to heat exchange in the heat recovery heat exchanger. According to the system, hot water is prepared in a total heat recovery mode while refrigeration is achieved, the heat exchange efficiency is improved, the hot water is rapidly prepared, liquid refrigerants obtained after total heat recovery enter the air conditioner side heat exchanger through the first reversing valve and the liquid storage container, and the situation that the liquid refrigerants directly flow in a pipeline, and consequently the system is abnormal can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to an air source heat pump system. Background Art

[0002] With the continuous progress of technology, people's requirements for the living environment are getting higher and higher. Air source heat pumps are favored by more and more manufacturers and users because they can solve the energy crisis to a certain extent. Existing air source heat pump systems can produce hot water while refrigerating, but the efficiency of producing hot water is low, and the flexibility of the system for different scenarios is poor. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an air source heat pump system for at least one defect existing in the related technologies mentioned in the above background art.

[0004] The technical solution adopted by the utility model to solve its technical problem is to construct an air source heat pump system, including:

[0005] A compressor for compressing the refrigerant;

[0006] A heat recovery heat exchanger, the heat recovery heat exchanger includes a refrigerant inlet and a refrigerant outlet communicated with the refrigerant inlet;

[0007] A first reversing valve, a liquid storage container and an air-conditioning side heat exchanger;

[0008] Wherein, after coming out of the compressor, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the liquid storage container and the air-conditioning side heat exchanger, and at the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

[0009] In one embodiment, the air source heat pump system further includes an outdoor side heat exchanger;

[0010] Wherein, after coming out of the compressor, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the outdoor side heat exchanger and the air-conditioning side heat exchanger, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0011] After coming out of the compressor, the refrigerant forms a heating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the air-conditioning side heat exchanger and the outdoor side heat exchanger, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0012] After the refrigerant comes out of the compressor, it forms a refrigerant circuit for pure hot water through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the liquid storage container, and the outdoor heat exchanger. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

[0013] In one embodiment, the first reversing valve includes a first valve port, a second valve port, and a third valve port;

[0014] The first valve port is connected to the refrigerant outlet, the second valve port is connected to the input end of the liquid storage container, the output end of the liquid storage container is connected to the air-conditioning side heat exchanger or the outdoor heat exchanger through a pipeline, the third valve port is connected to the outdoor heat exchanger or the air-conditioning side heat exchanger through a pipeline, and the first valve port is communicated with the second valve port or the first valve port is communicated with the third valve port;

[0015] Wherein, when the first valve port is communicated with the second valve port and the output end of the liquid storage container is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first valve port, the second valve port, the liquid storage container, and the air-conditioning side heat exchanger after coming out of the compressor. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0016] When the first valve port is communicated with the third valve port and the third valve port is connected to the outdoor heat exchanger through a pipeline, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first valve port, the third valve port, the outdoor heat exchanger, and the air-conditioning side heat exchanger after coming out of the compressor. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0017] When the first valve port is communicated with the third valve port and the third valve port is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant forms a heating refrigerant circuit through the refrigerant inlet, the refrigerant outlet, the first valve port, the third valve port, the air-conditioning side heat exchanger, and the outdoor heat exchanger after coming out of the compressor. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0018] When the first valve port is communicated with the second valve port and the output end of the liquid storage container is connected to the outdoor heat exchanger through a pipeline, the refrigerant forms a refrigerant circuit for pure hot water through the refrigerant inlet, the refrigerant outlet, the first valve port, the second valve port, the liquid storage container, and the outdoor heat exchanger after coming out of the compressor. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

[0019] In one embodiment, the heat recovery heat exchanger further includes a water inlet and a water outlet communicating with the water inlet;

[0020] The air source heat pump system further includes:

[0021] A domestic water tank, the domestic water tank is respectively connected to the water inlet and the water outlet.

[0022] In one embodiment, the input end of the liquid storage container is further connected to the outlet end of the air-conditioning side heat exchanger;

[0023] The air source heat pump system further includes:

[0024] A first check valve, the first check valve is arranged in the refrigerant pipeline connecting the input end of the liquid storage container and the outlet end of the air-conditioning side heat exchanger, and its conduction direction is towards the input end of the liquid storage container;

[0025] The second valve port is connected to the output end of the first check valve.

[0026] In one embodiment, the air source heat pump system further includes:

[0027] A second reversing valve, the second reversing valve includes a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected to the outlet of the compressor, the fifth valve port is connected to the refrigerant inlet, and the sixth valve port is connected to the outdoor side heat exchanger or the air-conditioning side heat exchanger through a pipeline.

[0028] In one embodiment, the air source heat pump system further includes:

[0029] A third reversing valve, the third reversing valve includes a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port, the seventh valve port is respectively connected to the outlet of the compressor and the third valve port, the eighth valve port is connected to the outdoor side heat exchanger, the ninth valve port is connected to the air-conditioning side heat exchanger, and the tenth valve port is connected to the inlet of the compressor.

[0030] In one embodiment, the first reversing valve and the second reversing valve are three-way valves, and the third reversing valve is a four-way valve.

[0031] In one embodiment, the air source heat pump system further includes:

[0032] An enthalpy-increasing module, the first end of the enthalpy-increasing module is connected to the outdoor side heat exchanger, the air-conditioning side heat exchanger or the liquid storage container, and the second end of the enthalpy-increasing module is connected to the air-conditioning side heat exchanger or the outdoor side heat exchanger.

[0033] In one embodiment, the enthalpy-increasing module includes a heat exchanger, an auxiliary throttling device, and a main throttling device. The heat exchanger includes a main refrigerant inlet, an auxiliary refrigerant inlet, a main refrigerant outlet, and an auxiliary refrigerant outlet.

[0034] Wherein, the first end of the enthalpy-increasing module is divided into two paths. One path is sequentially connected to the air-conditioning side heat exchanger or the outdoor side heat exchanger after passing through the main refrigerant inlet, the main refrigerant outlet, and the main throttling device. The other path is sequentially connected to the enthalpy-increasing port of the compressor after passing through the auxiliary throttling device, the auxiliary refrigerant inlet, and the auxiliary refrigerant outlet.

[0035] By implementing the present utility model, the following beneficial effects are achieved:

[0036] By providing the heat recovery heat exchanger, the first reversing valve, and the liquid storage container at the outlet of the compressor in the present utility model, the high-temperature and high-pressure refrigerant output from the compressor flows into the heat recovery heat exchanger, enabling the preparation of hot water through the total heat recovery mode while realizing refrigeration, improving the heat exchange efficiency, quickly preparing hot water, and enabling the liquid refrigerant after total heat recovery to enter the air-conditioning side heat exchanger through the first reversing valve via the liquid storage container, which can prevent the liquid refrigerant from directly flowing in the main pipeline and causing system abnormalities. And it can be switched to the waste heat recovery mode under corresponding circumstances. Additionally, it can also realize the preparation of hot water while heating and the pure preparation of hot water, thereby achieving the full utilization of heat and improving the flexibility, energy efficiency, and stability of the system in different modes. Description of the Drawings

[0037] The present utility model will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0038] Figure 1 is a schematic diagram of the air source heat pump system of the present utility model;

[0039] Figure 2 is a schematic diagram of the refrigerant flow direction for the air source heat pump system of the present utility model to prepare hot water through the total heat recovery mode while refrigerating;

[0040] Figure 3 is a schematic diagram of the first refrigerant flow direction for the air source heat pump system of the present utility model to prepare hot water through the waste heat recovery mode while refrigerating;

[0041] Figure 4 is a schematic diagram of the second refrigerant flow direction for the air source heat pump system of the present utility model to prepare hot water through the waste heat recovery mode while refrigerating;

[0042] Figure 5 is a schematic diagram of the first refrigerant flow direction for the air source heat pump system of the present utility model to prepare hot water while heating;

[0043] Figure 6It is a schematic diagram of the second refrigerant flow direction for the air source heat pump system of the present utility model to prepare hot water while heating;

[0044] Figure 7 It is a schematic diagram of the refrigerant flow direction for the air source heat pump system of the present utility model when only preparing hot water;

[0045] Figure 8 It is a schematic diagram of the refrigerant flow direction for the air source heat pump system of the present utility model in the refrigeration mode;

[0046] Figure 9 It is a schematic diagram of the refrigerant flow direction for the air source heat pump system of the present utility model in the heating mode. Detailed implementation manners

[0047] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings.

[0048] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0050] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "provided with", "located at" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a chemical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0051] Such as Figure 1As shown in the figure, an embodiment of the present utility model discloses an air source heat pump system, which includes a compressor 11, a heat recovery heat exchanger 12, a first reversing valve 13, an air-conditioning side heat exchanger 14 and a liquid storage container 17, specifically as follows:

[0052] The compressor 11 is used to compress the refrigerant. The heat recovery heat exchanger 12 includes a refrigerant inlet 121 and a refrigerant outlet 122 communicating with the refrigerant inlet 121. The air-conditioning side heat exchanger 14 is used to realize the heat exchange between the refrigerant and the water in the terminal 27. The liquid storage container 17 is used to store and supply the liquid refrigerant. For example, the heat recovery heat exchanger 12 is a double-pipe heat exchanger, and the air-conditioning side heat exchanger 14 is a plate heat exchanger. The double-pipe heat exchanger and the plate heat exchanger here are only examples and do not limit the present application.

[0053] Among them, after coming out of the compressor 11, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet 121, the refrigerant outlet 122, the first reversing valve 13, the liquid storage container 17 and the air-conditioning side heat exchanger 14. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12, that is, the refrigerating and full heat recovery mode for producing domestic hot water.

[0054] In some embodiments, the air source heat pump system further includes an outdoor side heat exchanger 15, which is used to realize the heat exchange between the refrigerant and the outside air. For example, the outdoor side heat exchanger 15 is a finned heat exchanger. The finned heat exchanger here is only an example and does not limit the present application.

[0055] Among them, after coming out of the compressor 11, the refrigerant forms a refrigerating refrigerant circuit through the refrigerant inlet 121, the refrigerant outlet 122, the first reversing valve 13, the outdoor side heat exchanger 15 and the air-conditioning side heat exchanger 14. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12, that is, the refrigerating and waste heat recovery (also called partial heat recovery) mode for producing domestic hot water.

[0056] After coming out of the compressor 11, the refrigerant forms a heating refrigerant circuit through the refrigerant inlet 121, the refrigerant outlet 122, the first reversing valve 13, the air-conditioning side heat exchanger 14 and the outdoor side heat exchanger 15. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12, that is, the heating plus domestic hot water mode.

[0057] After coming out of the compressor 11, the refrigerant forms a pure hot water refrigerant circuit through the refrigerant inlet 121, the refrigerant outlet 122, the first reversing valve 13, the liquid storage container 17 and the outdoor side heat exchanger 15. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12, that is, the pure hot water mode.

[0058] In some embodiments, the first reversing valve 13 includes a first valve port 131, a second valve port 132, and a third valve port 133. The first valve port 131 is connected to the refrigerant outlet 122. The second valve port 132 is connected to the input end of the liquid storage container 17. The output end of the liquid storage container 17 is connected to the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15 through a pipeline. The third valve port 133 is connected to the outdoor side heat exchanger 15 or the air-conditioning side heat exchanger 14 through a pipeline. The first valve port 131 communicates with the second valve port 132 or the first valve port 131 communicates with the third valve port 133. For example, the first reversing valve 13 is a three-way valve. The three-way valve here is only an example and does not limit the present application.

[0059] Wherein, when the first valve port 131 communicates with the second valve port 132 and the output end of the liquid storage container 17 is connected to the air-conditioning side heat exchanger 14 through a pipeline, that is, in the refrigeration and full heat recovery for domestic hot water modes, the refrigerant comes out of the compressor 11 and then passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the second valve port 132, the liquid storage container 17, and the air-conditioning side heat exchanger 14 to form a refrigeration refrigerant circuit. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0060] When the first valve port 131 communicates with the third valve port 133 and the third valve port 133 is connected to the outdoor side heat exchanger 15 through a pipeline, that is, in the refrigeration and waste heat recovery for domestic hot water modes, the refrigerant comes out of the compressor 11 and then passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the third valve port 133, the outdoor side heat exchanger 15, and the air-conditioning side heat exchanger 14 to form a refrigeration refrigerant circuit. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0061] When the first valve port 131 communicates with the third valve port 133 and the third valve port 133 is connected to the air-conditioning side heat exchanger 14 through a pipeline, that is, in the heating plus domestic hot water mode, the refrigerant comes out of the compressor 11 and then passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the third valve port 133, the air-conditioning side heat exchanger 14, and the outdoor side heat exchanger 15 to form a heating refrigerant circuit. At the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0062] When the first valve port 131 communicates with the second valve port 132 and the output end of the liquid storage container 17 is connected to the outdoor heat exchanger 15 through a pipeline, that is, in the pure hot water mode, the refrigerant comes out of the compressor 11 and then passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the second valve port 132, the liquid storage container 17 and the outdoor heat exchanger 15 to form a refrigerant circuit for pure hot water. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0063] In some embodiments, the heat recovery heat exchanger 12 further includes a water inlet 123 and a water outlet 124 communicating with the water inlet 123. The air source heat pump system further includes a domestic water tank 16. The domestic water tank 16 is respectively connected to the water inlet 123 and the water outlet 124. All or at least part of the heat of the refrigerant output by the compressor 11 is exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water.

[0064] Specifically, when preparing hot water while cooling in summer, if the initial water temperature is 30°C and the target is to heat it to 60°C, the waste heat recovery mode can be adopted, but the hot water production speed is slow. Therefore, in order to solve the problem of slow hot water production speed in the cooling and waste heat recovery modes, and the problem that the liquid refrigerant may exist after heat exchange and the direct flow of the liquid refrigerant in the main pipeline will affect the commutation of the third reversing valve 22, resulting in system abnormalities, a full heat recovery mode is provided. All the heat of the refrigerant output by the compressor 11 is exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12, which can improve the hot water production speed and quickly prepare hot water. The refrigerant becomes a liquid refrigerant after coming out of the refrigerant outlet 122, and then enters the input end of the liquid storage container 17 through the first valve port 131 and the second valve port 132 and a bypass pipeline. The output end of the liquid storage container 17 outputs the liquid refrigerant into the air-conditioning side heat exchanger 14. When the water temperature reaches a preset value (for example, 50°C), at this time, due to the small temperature difference between the refrigerant and the water, the waste heat recovery mode can be switched. If the initial water temperature is 50°C and the target is to heat it to 60°C, the waste heat recovery mode can be directly adopted. It should be noted that the above-listed temperature data are only for illustrative purposes and do not limit the present invention.

[0065] In some embodiments, the input end of the liquid storage container 17 is further connected to the output end of the air-conditioning side heat exchanger 14. The air source heat pump system further includes a first check valve 18. The first check valve 18 is arranged in the refrigerant pipeline connecting the input end of the liquid storage container 17 and the output end of the air-conditioning side heat exchanger 14, and its conduction direction is towards the input end of the liquid storage container 17, and the second valve port 132 is connected to the output end of the first check valve 18.

[0066] When in the heating plus domestic hot water mode, after the refrigerant comes out of the compressor 11, it forms a heating refrigerant circuit through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the third valve port 133, the air-conditioning side heat exchanger 14, the liquid storage container 17, and the outdoor side heat exchanger 15.

[0067] In some embodiments, a second one-way valve 19 is provided on the bypass pipeline of the input end of the second valve port 132 and the liquid storage container 17, and its conduction direction is towards the input end of the liquid storage container 17, that is, the input end of the second one-way valve 19 is connected to the second valve port 132, and the output end of the second one-way valve 19 is connected to the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15 through a pipeline.

[0068] In some embodiments, the air source heat pump system further includes a second reversing valve 21. The second reversing valve 21 includes a fourth valve port 211, a fifth valve port 212, and a sixth valve port 213. The fourth valve port 211 is connected to the outlet of the compressor 11, the fifth valve port 212 is connected to the refrigerant inlet 121, and the sixth valve port 213 is connected to the outdoor side heat exchanger 15 or the air-conditioning side heat exchanger 14 through a pipeline. For example, the second reversing valve 21 is a three-way valve. The three-way valve here is only an example and does not limit the present application.

[0069] In some embodiments, the air source heat pump system further includes a third reversing valve 22. The third reversing valve 22 includes a seventh valve port 221, an eighth valve port 222, a ninth valve port 223, and a tenth valve port 224. The seventh valve port 221 is respectively connected to the outlet of the compressor 11 and the third valve port 133, the eighth valve port 222 is connected to the outdoor side heat exchanger 15, the ninth valve port 223 is connected to the air-conditioning side heat exchanger 14, and the tenth valve port 224 is connected to the inlet of the compressor 11. Specifically, the tenth valve port 224 is connected to the inlet of the compressor 11 through a gas-liquid separator 23. In some embodiments, the third reversing valve 22 is a four-way valve. The four-way valve here is only an example and does not limit the present application.

[0070] In some embodiments, the air source heat pump system further includes an enthalpy-increasing module. The first end of the enthalpy-increasing module is connected to the outdoor side heat exchanger 15, the air-conditioning side heat exchanger 14, or the liquid storage container 17 (i.e., the second valve port 132), and the second end of the enthalpy-increasing module is connected to the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15. Among them, the enthalpy-increasing module includes a main refrigerant path and an enthalpy-increasing auxiliary path, and the first end and the second end of the enthalpy-increasing module are the first end and the second end of the main refrigerant path.

[0071] Specifically, the enthalpy-increasing module includes a heat exchanger 24, an auxiliary throttling device 25, and a main throttling device 26. The heat exchanger 24 includes a main refrigerant inlet 241, an auxiliary refrigerant inlet 242, a main refrigerant outlet 243, and an auxiliary refrigerant outlet 244. For example, the auxiliary throttling device 25 and the main throttling device 26 are electronic expansion valves or thermostatic expansion valves. The electronic expansion valve and the thermostatic expansion valve here are only examples and do not limit the present application.

[0072] Wherein, the first end of the enthalpy-increasing module is divided into two paths. One path is connected to the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15 after passing through the main refrigerant inlet 241, the main refrigerant outlet 243, and the main throttling device 26 in sequence (i.e., after passing through the main refrigerant path), and the other path is connected to the enthalpy-increasing port 111 of the compressor 11 after passing through the auxiliary throttling device 25, the auxiliary refrigerant inlet 242, and the auxiliary refrigerant outlet 244 in sequence (i.e., after passing through the enthalpy-increasing auxiliary path).

[0073] By adding the heat exchanger 24 and the auxiliary throttling device 25 at the outlet of the second valve port 132, the outdoor side heat exchanger 15, and the air-conditioning side heat exchanger 14, the refrigerant coming out of the outdoor side heat exchanger 15, the air-conditioning side heat exchanger 14, or the liquid storage container 17 (i.e., the second valve port 132) respectively passes through the main refrigerant path and the enthalpy-increasing auxiliary path. The refrigerant in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25, and then can more efficiently absorb the heat of the refrigerant from the main refrigerant path in the heat exchanger 24. After the refrigerant absorbs heat and vaporizes, it enters the enthalpy-increasing port 111 of the compressor 11, thereby further reducing the temperature of the refrigerant in the main refrigerant path. In this way, the refrigeration effect of the terminal 27 can be improved in the refrigeration mode, and the heating capacity of the refrigerant at low temperature can be improved in the heating mode.

[0074] It can be understood that in some embodiments, if the length and complexity of the pipeline do not need to be considered, the compressor 11 may not be provided with the enthalpy-increasing port 111, but directly introduce the refrigerant in the enthalpy-increasing auxiliary path into the gas-liquid separator 23 and then into the compressor 11.

[0075] Specifically, after the temperature of the refrigerant in the main refrigerant path is reduced by heat exchange, it is further reduced in temperature by the main throttling device 26 and then enters the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15, thereby improving the heat absorption performance of the refrigerant, that is, improving the refrigeration effect of the system.

[0076] To avoid excessive pipeline pressure, the air source heat pump system further includes a pressure relief module. The pressure relief module includes a third one-way valve 20. The inlet end of the third one-way valve 20 is connected to the main throttling device 26, and the outlet end of the third one-way valve 20 is connected to the seventh valve port 221. In some embodiments, the inlet end of the third one-way valve 20 is further connected to the outlet end of the outdoor heat exchanger 15.

[0077] Specifically, the air source heat pump system further includes the terminal 27. The terminal 27 may include a fan coil and / or floor heating installed indoors. Further, it may also include a hydraulic module connected between the air-conditioning side heat exchanger 14 and the fan coil and / or floor heating, which is not limited herein.

[0078] In different situations, different valve ports will be connected accordingly, specifically as follows:

[0079] Such as Figure 2As shown, in the refrigeration and total heat recovery for domestic hot water modes, the fourth valve port 211 communicates with the fifth valve port 212, the first valve port 131 communicates with the second valve port 132, and the ninth valve port 223 communicates with the tenth valve port 224. That is, when it is necessary to quickly prepare hot water in the refrigeration mode, the high-temperature gas output from the outlet of the compressor 11 first passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12, and becomes medium-temperature liquid after preparing hot water. The medium-temperature liquid output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the second valve port 132 of the first reversing valve 13 and then enters the input end of the liquid storage container 17. The medium-temperature liquid output from the output end of the liquid storage container 17 respectively passes through the refrigerant main path and the enthalpy-increasing auxiliary path. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and then becomes relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become lower-temperature low-temperature liquid, and then enters the first refrigerant port 141 of the air-conditioning side heat exchanger 14. The low-temperature liquid exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14, and the low-temperature liquid absorbs the heat of the circulating water and evaporates to become low-temperature gas. The low-temperature gas output from the second refrigerant port 142 of the air-conditioning side heat exchanger 14 passes through the ninth valve port 223 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11, and circulates reciprocally. The heat recovery heat exchanger 12 communicates with the domestic water tank 16, so that all the condensation heat originally used for heat exchange with air by the outdoor side heat exchanger 15 during summer refrigeration is recovered and utilized, avoiding waste of all the heat in the heat exchange between the outdoor side heat exchanger 15 and air. The recovered heat completes heat exchange with the water in the domestic water tank 16 in the heat recovery heat exchanger 12, quickly prepares hot water, improves energy utilization efficiency, and improves heat exchange efficiency.

[0080] As Figure 3As shown, in the refrigeration and waste heat recovery for domestic hot water mode, the fourth valve port 211 communicates with the fifth valve port 212, the first valve port 131 communicates with the third valve port 133, the seventh valve port 221 communicates with the eighth valve port 222, and the ninth valve port 223 communicates with the tenth valve port 224. That is, when hot water needs to be prepared in the refrigeration mode, the high-temperature gas output from the outlet of the compressor 11 first passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water and then becomes medium-temperature gas. The medium-temperature gas output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the second valve port 132 of the first reversing valve 13 and the seventh valve port 221 and the eighth valve port 222 of the third reversing valve 22 and then enters the third refrigerant port 151 of the outdoor heat exchanger 15. The medium-temperature gas condenses and releases heat in the outdoor heat exchanger 15 and then becomes medium-temperature liquid. The medium-temperature liquid output from the fourth refrigerant port 152 of the outdoor heat exchanger 15 respectively passes through the refrigerant main path and the enthalpy-increasing auxiliary path. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and then becomes relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become lower-temperature liquid, and then enters the first refrigerant port 141 of the air-conditioning side heat exchanger 14. The low-temperature liquid exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14, and the low-temperature liquid absorbs the heat of the circulating water and then evaporates to become low-temperature gas. The low-temperature gas output from the second refrigerant port 142 of the air-conditioning side heat exchanger 14 passes through the ninth valve port 223 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11 for reciprocating circulation. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 15 is recovered and utilized during summer refrigeration, avoiding waste of all heat in the heat exchange between the outdoor heat exchanger 15 and air. The recovered heat exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water, improving the energy utilization rate.

[0081] Specifically, Figure 3 and Figure 2 the difference from the embodiment shown is that Figure 3 in order to recover and utilize at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 15, and Figure 2To recover and utilize all the condensation heat originally used by the outdoor heat exchanger 15 for heat exchange with air.

[0082] Such as Figure 4As shown, in the refrigeration mode and the waste heat recovery mode for producing domestic hot water, the fourth valve port 211 communicates with the fifth valve port 212 and the sixth valve port 213 respectively, the first valve port 131 communicates with the third valve port 133, the seventh valve port 221 communicates with the eighth valve port 222, and the ninth valve port 223 communicates with the tenth valve port 224. That is, when hot water needs to be prepared in the refrigeration mode, the high-temperature gas output from the outlet of the compressor 11 passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. Another path passes through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21 and the seventh valve port 221 and the eighth valve port 222 of the third reversing valve 22 and then enters the third refrigerant port 151 of the outdoor heat exchanger 15. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 and becomes medium-temperature gas after preparing hot water. The medium-temperature gas output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the third valve port 133 of the first reversing valve 13 and the seventh valve port 221 and the eighth valve port 222 of the third reversing valve 22 and then enters the third refrigerant port 151 of the outdoor heat exchanger 15. The medium-temperature gas condenses and releases heat in the outdoor heat exchanger 15 and becomes medium-temperature liquid. The medium-temperature liquid output from the fourth refrigerant port 152 of the outdoor heat exchanger 15 passes through the refrigerant main path and the enthalpy-increasing auxiliary path respectively. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and becomes relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become lower-temperature liquid, and then enters the first refrigerant port 141 of the air-conditioning side heat exchanger 14. The low-temperature liquid exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14, and the low-temperature liquid absorbs the heat of the circulating water and evaporates to become low-temperature gas. The low-temperature gas output from the second refrigerant port 142 of the air-conditioning side heat exchanger 14 passes through the ninth valve port 223 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11 for reciprocating cycle. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 15 is recovered and utilized during summer refrigeration, avoiding waste of all heat in the heat exchange between the outdoor heat exchanger 15 and air. The recovered heat exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water, improving the energy utilization rate.

[0083] Specifically,Figure 4 and Figure 3 The difference from the embodiment shown in Figure 4 In the embodiment shown, one more refrigerant circuit passes through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21 and the seventh valve port 221 and the eighth valve port 222 of the third reversing valve 22 and then enters the outdoor heat exchanger 15, which can better regulate the amount of refrigerant entering the heat recovery heat exchanger 12, and the refrigerant circuit directly reaching the third reversing valve 22 from the compressor 11 can ensure that the refrigerant is in a gaseous state, while the refrigerant in the circuit passing through the heat recovery heat exchanger 12 may be in a liquid state after heat exchange. The pure gaseous refrigerant can more ensure that the third reversing valve 22 has sufficient pressure difference for commutation, so the pressure loss of the refrigerant pipeline is small, and the second reversing valve 21 is not easily affected by impurities, enabling the system to operate stably.

[0084] Such as Figure 5As shown, in the heating plus domestic hot water mode, the fourth valve port 211 communicates with the fifth valve port 212, the first valve port 131 communicates with the third valve port 133, the seventh valve port 221 communicates with the ninth valve port 223, and the eighth valve port 222 communicates with the tenth valve port 224. That is, when hot water needs to be prepared in the heating mode, the high-temperature gas output from the outlet of the compressor 11 first passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water and then becomes medium-temperature gas. The medium-temperature gas output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the third valve port 133 of the first reversing valve 13 and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22 and then enters the second refrigerant port 142 of the air-conditioning side heat exchanger 14. The medium-temperature gas exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14 and then becomes medium-temperature liquid. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 enters the input end of the liquid storage container 17. The medium-temperature liquid output from the output end of the liquid storage container 17 passes through the refrigerant main path and the enthalpy-increasing auxiliary path respectively. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and then becomes relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become lower-temperature low-temperature liquid, and then enters the fourth refrigerant port 152 of the outdoor side heat exchanger 15. The low-temperature liquid evaporates and absorbs heat in the outdoor side heat exchanger 15 and then becomes low-temperature gas. The low-temperature gas output from the third refrigerant port 151 of the outdoor side heat exchanger 15 passes through the eighth valve port 222 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11, and circulates reciprocally. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that hot water can be prepared while heating in winter, improving the energy utilization rate.

[0085] As Figure 6As shown, in the heating plus domestic hot water mode, the fourth valve port 211 communicates with the fifth valve port 212 and the sixth valve port 213 respectively, the first valve port 131 communicates with the third valve port 133, the seventh valve port 221 communicates with the ninth valve port 223, and the eighth valve port 222 communicates with the tenth valve port 224. That is, when hot water needs to be prepared in the heating mode, the high-temperature gas output from the outlet of the compressor 11 passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. Another path passes through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21 and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22 and then enters the second refrigerant port 142 of the air-conditioning side heat exchanger 14. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 and becomes medium-temperature gas after preparing hot water. The medium-temperature gas output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the third valve port 133 of the first reversing valve 13 and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22 and then enters the second refrigerant port 142 of the air-conditioning side heat exchanger 14. The medium-temperature gas exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14 and becomes medium-temperature liquid. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 enters the input end of the liquid storage container 17. The medium-temperature liquid output from the output end of the liquid storage container 17 passes through the refrigerant main path and the enthalpy-increasing auxiliary path respectively. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and becomes relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become lower-temperature liquid, and then enters the fourth refrigerant port 152 of the outdoor side heat exchanger 15. The low-temperature liquid evaporates and absorbs heat in the outdoor side heat exchanger 15 and becomes low-temperature gas. The low-temperature gas output from the third refrigerant port 151 of the outdoor side heat exchanger 15 passes through the eighth valve port 222 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11 for reciprocating cycle. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that hot water can be prepared while heating in winter, improving energy utilization efficiency.

[0086] Specifically, Figure 6 and Figure 5 The difference from the embodiment shown is that Figure 6In the illustrated embodiment, an additional path passes through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21, and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22 and then enters the air-conditioning side heat exchanger 14, which can better regulate the amount of refrigerant entering the heat recovery heat exchanger 12. Moreover, the path where the refrigerant directly reaches the third reversing valve 22 from the compressor 11 can ensure that the refrigerant is in a gaseous state. However, the refrigerant in the path passing through the heat recovery heat exchanger 12 may be in a liquid state after heat exchange. The pure gaseous refrigerant can more effectively ensure that there is sufficient pressure difference for the third reversing valve 22 to reverse. Therefore, the pressure loss of the refrigerant pipeline is small, and the second reversing valve 21 is not easily affected by impurities, enabling the system to operate stably.

[0087] As Figure 7As shown, in the pure hot water mode, the fourth valve port 211 communicates with the fifth valve port 212, the first valve port 131 communicates with the second valve port 132, and the eighth valve port 222 communicates with the tenth valve port 224. That is, when only hot water needs to be prepared, the high-temperature gas output from the outlet of the compressor 11 first passes through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 and then enters the refrigerant inlet 121 of the heat recovery heat exchanger 12. The high-temperature gas exchanges heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water. After the hot water is prepared, it becomes a medium-temperature liquid. The medium-temperature liquid output from the refrigerant outlet 122 of the heat recovery heat exchanger 12 passes through the first valve port 131 and the second valve port 132 of the first reversing valve 13 and then enters the input end of the liquid storage container 17. The medium-temperature liquid output from the output end of the liquid storage container 17 passes through the refrigerant main path and the enthalpy-increasing auxiliary path respectively. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become a low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and then becomes a relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become a low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become a lower-temperature low-temperature liquid, and then enters the fourth refrigerant port 152 of the outdoor heat exchanger 15. The low-temperature liquid evaporates and absorbs heat in the outdoor heat exchanger 15 and then becomes a low-temperature gas. The low-temperature gas output from the third refrigerant port 151 of the outdoor heat exchanger 15 passes through the eighth valve port 222 and the tenth valve port 224 of the third reversing valve 22 and then returns to the inlet of the compressor 11 for reciprocating circulation. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that all the heat from the compressor 11 can be used alone to exchange heat with the water in the domestic water tank 16 in the heat recovery heat exchanger 12, targeting the use of energy. When making hot water, the refrigerant circuit is shortened and does not need to pass through the air-conditioning side heat exchanger 14, and the heat exchange efficiency is higher.

[0088] As Figure 8As shown, in the refrigeration mode, the fourth valve port 211 communicates with the sixth valve port 213, the seventh valve port 221 communicates with the eighth valve port 222, and the ninth valve port 223 communicates with the tenth valve port 224. That is, when refrigerating alone in summer, the high-temperature gas output from the outlet of the compressor 11 enters the third refrigerant port 151 of the outdoor heat exchanger 15 after passing through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21 and the seventh valve port 221 and the eighth valve port 222 of the third reversing valve 22. The high-temperature gas condenses and releases heat in the outdoor heat exchanger 15 and becomes a medium-temperature liquid. The medium-temperature liquid output from the fourth refrigerant port 152 of the outdoor heat exchanger 15 passes through the refrigerant main path and the enthalpy-increasing auxiliary path respectively. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become a low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and then becomes a relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the refrigerant main path is cooled by heat exchange to become a low-temperature liquid, and then is further throttled and cooled by the main throttling device 26 to become a lower-temperature low-temperature liquid, and then enters the first refrigerant port 141 of the air-conditioning side heat exchanger 14. The low-temperature liquid exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14, and the low-temperature liquid absorbs the heat of the circulating water and evaporates to become a low-temperature gas. The low-temperature gas output from the second refrigerant port 142 of the air-conditioning side heat exchanger 14 returns to the inlet of the compressor 11 after passing through the ninth valve port 223 and the tenth valve port 224 of the third reversing valve 22, and circulates reciprocally.

[0089] As Figure 9As shown, in the heating mode, the fourth valve port 211 communicates with the sixth valve port 213, the seventh valve port 221 communicates with the ninth valve port 223, and the eighth valve port 222 communicates with the tenth valve port 224. That is, when heating alone in winter, the high-temperature gas output from the outlet of the compressor 11 enters the second refrigerant port 142 of the air-conditioning side heat exchanger 14 after passing through the fourth valve port 211 and the sixth valve port 213 of the second reversing valve 21 and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22. The high-temperature gas exchanges heat with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14 and then becomes a medium-temperature liquid. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 enters the input end of the liquid storage container 17. The medium-temperature liquid output from the output end of the liquid storage container 17 respectively passes through the main refrigerant path and the enthalpy-increasing auxiliary path. The medium-temperature liquid in the enthalpy-increasing auxiliary path is throttled and cooled by the auxiliary throttling device 25 to become a low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the main refrigerant path in the heat exchanger 24 and then becomes a relatively low-temperature gas, and finally enters the enthalpy-increasing port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant path is cooled by heat exchange to become a low-temperature liquid, and then further throttled and cooled by the main throttling device 26 to become a lower-temperature low-temperature liquid, and then enters the fourth refrigerant port 152 of the outdoor side heat exchanger 15. The low-temperature liquid evaporates and absorbs heat in the outdoor side heat exchanger 15 and then becomes a low-temperature gas. The low-temperature gas output from the third refrigerant port 151 of the outdoor side heat exchanger 15 returns to the inlet of the compressor 11 after passing through the eighth valve port 222 and the tenth valve port 224 of the third reversing valve 22, and circulates reciprocally.

[0090] It should be noted here that the above high, medium, and low temperatures are only relative expressions, and the gas can also refer to the gas-liquid two-phase state or the gaseous state, which is not limited here.

[0091] By implementing the present utility model, the following beneficial effects are achieved:

[0092] By arranging the heat recovery heat exchanger 12, the first reversing valve 13, and the liquid storage container 17 at the outlet of the compressor 11 in the present utility model, the high-temperature and high-pressure refrigerant output from the compressor 11 flows into the heat recovery heat exchanger 12, realizing the preparation of hot water through the total heat recovery mode while refrigerating, improving the heat exchange efficiency, quickly preparing hot water, and enabling the liquid refrigerant after total heat recovery to enter the air-conditioning side heat exchanger 14 through the first reversing valve 13 and the liquid storage container 17, which can prevent the liquid refrigerant from directly flowing in the main pipeline and causing system abnormalities. And it can be switched to the waste heat recovery mode under corresponding circumstances. In addition, it can also realize the preparation of hot water while heating and the pure preparation of hot water, thereby realizing the full utilization of heat and improving the flexibility, energy efficiency, and stability of the system in different modes.

[0093] It can be understood that the above embodiments only represent some implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present utility model, that is, the embodiments described in "in some embodiments" can be freely combined with any of the above and below embodiments. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present utility model shall fall within the scope covered by the claims of the present utility model.

Claims

1. An air source heat pump system, characterized in that: include: A compressor, used to compress the refrigerant; A heat recovery heat exchanger, the heat recovery heat exchanger comprising a refrigerant inlet and a refrigerant outlet connected to the refrigerant inlet; A first reversing valve, a liquid storage container, an air-conditioning side heat exchanger and an outdoor side heat exchanger; After the refrigerant comes out of the compressor, it passes through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the liquid storage container and the air-conditioning side heat exchanger to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the heat recovery heat exchanger; Alternatively, after coming out of the compressor, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the outdoor heat exchanger and the air-conditioning side heat exchanger to form a refrigeration refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger; Alternatively, after coming out of the compressor, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the air-conditioning side heat exchanger and the outdoor side heat exchanger to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger; Alternatively, after coming out of the compressor, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first reversing valve, the liquid storage container and the outdoor heat exchanger to form a refrigerant circuit of pure hot water, and all the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

2. The air source heat pump system according to claim 1, characterized in that: The first reversing valve comprises a first valve port, a second valve port and a third valve port; The first valve port is connected to the refrigerant outlet, the second valve port is connected to the input end of the liquid storage container, the output end of the liquid storage container is connected to the air-conditioning side heat exchanger or the outdoor side heat exchanger through a pipeline, the third valve port is connected to the outdoor side heat exchanger or the air-conditioning side heat exchanger through a pipeline, the first valve port is connected to the second valve port or the first valve port is connected to the third valve port; Wherein, when the first valve port is communicated with the second valve port, and the output end of the liquid storage container is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first valve port, the second valve port, the liquid storage container and the air-conditioning side heat exchanger after coming out of the compressor to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the heat recovery heat exchanger; When the first valve port is communicated with the third valve port, and the third valve port is connected to the outdoor heat exchanger through a pipeline, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first valve port, the third valve port, the outdoor heat exchanger and the air-conditioning side heat exchanger after coming out of the compressor to form a refrigeration refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger; When the first valve port is communicated with the third valve port, and the third valve port is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant passes through the refrigerant inlet, the refrigerant outlet, the first valve port, the third valve port, the air-conditioning side heat exchanger and the outdoor side heat exchanger after coming out of the compressor to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger; When the first valve port is connected to the second valve port and the output end of the liquid storage container is connected to the outdoor heat exchanger through a pipeline, the refrigerant comes out of the compressor and passes through the refrigerant inlet, the refrigerant outlet, the first valve port, the second valve port, the liquid storage container and the outdoor heat exchanger to form a refrigerant circuit of pure hot water. At the same time, all the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

3. The air source heat pump system according to claim 1, characterized in that: The heat recovery heat exchanger further comprises a water inlet and a water outlet communicating with the water inlet; The air source heat pump system further comprises: A domestic water tank is connected to the water inlet and the water outlet respectively.

4. The air source heat pump system according to claim 2, characterized in that: The input end of the liquid storage container is also connected to the outlet end of the air-conditioning side heat exchanger; The air source heat pump system further comprises: A first one-way valve, which is disposed in a refrigerant pipeline connecting the input end of the liquid storage container and the outlet end of the air-conditioning side heat exchanger, and whose conducting direction is toward the input end of the liquid storage container; The second valve port is connected to the output end of the first one-way valve.

5. The air source heat pump system according to claim 2, characterized in that: The air source heat pump system further comprises: The second reversing valve includes a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected to the outlet of the compressor, the fifth valve port is connected to the refrigerant inlet, and the sixth valve port is connected to the outdoor heat exchanger or the air-conditioning side heat exchanger through a pipeline.

6. The air source heat pump system according to claim 5, characterized in that: The air source heat pump system further comprises: The third reversing valve includes a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port, the seventh valve port is connected to the outlet of the compressor and the third valve port respectively, the eighth valve port is connected to the outdoor heat exchanger, the ninth valve port is connected to the air-conditioning side heat exchanger, and the tenth valve port is connected to the inlet of the compressor.

7. The air source heat pump system according to claim 6, characterized in that: The first reversing valve and the second reversing valve are three-way valves, and the third reversing valve is a four-way valve.

8. The air source heat pump system according to claim 1, characterized in that: The air source heat pump system further comprises: An enthalpy increasing module, wherein a first end of the enthalpy increasing module is connected to the outdoor heat exchanger, the air conditioning side heat exchanger or the liquid storage container, and a second end of the enthalpy increasing module is connected to the air conditioning side heat exchanger or the outdoor heat exchanger.

9. The air source heat pump system according to claim 8, characterized in that: The enthalpy increase module includes a heat exchanger, an auxiliary throttling device and a main throttling device, and the heat exchanger includes a refrigerant main inlet, a refrigerant auxiliary inlet, a refrigerant main outlet and a refrigerant auxiliary outlet; Among them, the first end of the enthalpy increase module is divided into two paths, one path is connected to the air-conditioning side heat exchanger or the outdoor side heat exchanger after passing through the refrigerant main inlet, the refrigerant main outlet and the main throttling device in sequence, and the other path is connected to the enthalpy increase port of the compressor after passing through the auxiliary throttling device, the refrigerant auxiliary inlet and the refrigerant auxiliary outlet in sequence.

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