Air-source heat pump system

Abstract

Provided is an air-source heat pump system, comprising a compressor (11), a heat recovery heat exchanger (12), an outdoor-side heat exchanger (15), an air-conditioning-side heat exchanger (14), and a first reversing valve (13). The heat recovery heat exchanger (12) comprises a refrigerant inlet (121) connected to an outlet of the compressor (11), and a refrigerant outlet (122). The first reversing valve (13) comprises a first valve port (131) connected to the refrigerant outlet (122), a second valve port (132) connected to the air-conditioning-side heat exchanger (14) or the outdoor-side heat exchanger (15), and a third valve port (133) connected to the outdoor-side heat exchanger (15) or the air-conditioning-side heat exchanger (14). When the first valve port (131) is in communication with the second valve port (132), and the second valve port (132) is connected to the air-conditioning-side heat exchanger (14), a refrigerant circuit for cooling is formed, and all the heat of a refrigerant is also exchanged in the heat recovery heat exchanger (12). When the first valve port (131) is in communication with the third valve port (133), and the third valve port (133) is connected to the outdoor-side heat exchanger (15), a refrigerant circuit for cooling is formed, and at least some of the heat of a refrigerant is also exchanged in the heat recovery heat exchanger (12). The system can quickly prepare hot water by means of a full heat recovery mode while performing cooling, and can also switch to a waste heat recovery mode, thereby improving the flexibility of the system when same is in different modes.

Description

Air source heat pump system Technical Field

[0001] The present application relates to the field of heat pump technology, and in particular to an air source heat pump system. Background Art

[0002] With the continuous advancement of technology, people's requirements for living environments are becoming increasingly higher. Air-source heat pumps, which can partially solve the energy crisis, are becoming more and more popular among manufacturers and users. Existing air-source heat pump systems can produce hot water while cooling, but the efficiency of hot water production is low and the system lacks flexibility for different scenarios. Summary of the Invention

[0003] The technical problem to be solved by the present application is to provide an air source heat pump system in response to at least one defect of the related technology mentioned in the above background technology.

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

[0005] Compressor, used to compress refrigerant;

[0006] a heat recovery heat exchanger, the heat recovery heat exchanger comprising a refrigerant inlet and a refrigerant outlet communicating with the refrigerant inlet, the refrigerant inlet being connected to the outlet of the compressor;

[0007] Outdoor side heat exchanger and air conditioning side heat exchanger;

[0008] a first reversing valve, the first reversing valve including a first valve port, a second valve port, and a third valve port, the first valve port being connected to the refrigerant outlet, the second valve port being connected to the air-conditioning side heat exchanger or the outdoor side heat exchanger via a pipeline, the third valve port being connected to the outdoor side heat exchanger or the air-conditioning side heat exchanger via a pipeline, the first valve port being in communication with the second valve port or the first valve port being in communication with the third valve port;

[0009] Wherein, when the first valve port is in communication with the second valve port, and the second valve port is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant, after coming out of the compressor, passes through the refrigerant inlet, the refrigerant outlet, the first valve port, the second valve port 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;

[0010] When the first valve port is connected to the third valve port, and the third valve port 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 third valve port, the outdoor heat exchanger and the air-conditioning side heat exchanger to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

[0011] In one embodiment, when the first valve port is in communication with the third valve port, and the third valve port is connected to the air-conditioning side heat exchanger through a pipeline, the refrigerant, after coming out of the compressor, 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 to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger;

[0012] When the first valve port is connected to the second valve port, and the second valve port 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 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.

[0013] In one embodiment, the heat recovery heat exchanger further comprises a water inlet and a water outlet communicating with the water inlet;

[0014] The air source heat pump system further includes:

[0015] A domestic water tank is connected to the water inlet and the water outlet respectively.

[0016] In one embodiment, the air source heat pump system further comprises:

[0017] A liquid storage container, wherein the input end of the liquid storage container is connected to the second valve port, and 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.

[0018] In one embodiment, the input end of the liquid storage container is also connected to the outlet end of the air-conditioning side heat exchanger;

[0019] The air source heat pump system further includes:

[0020] a first one-way valve, which is provided in a refrigerant pipeline connecting the input end of the liquid storage container and the outlet end of the air-conditioning side heat exchanger, with its conducting direction toward the input end of the liquid storage container;

[0021] The second valve port is connected to the output end of the first one-way valve.

[0022] In one embodiment, the air source heat pump system further comprises:

[0023] 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.

[0024] In one embodiment, the air source heat pump system further comprises:

[0025] a third reversing valve, the third reversing valve comprising a seventh valve port, an eighth valve port, a ninth valve port, and a tenth valve port, the seventh valve port being connected to the outlet of the compressor and the third valve port, respectively; and

[0026] 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.

[0027] 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.

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

[0029] An enthalpy increasing module, wherein the first end of the enthalpy increasing module is connected to the outdoor heat exchanger, the air conditioning side heat exchanger or the second valve port, and the second end of the enthalpy increasing module is connected to the air conditioning side heat exchanger or the outdoor heat exchanger.

[0030] In one embodiment, 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;

[0031] 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.

[0032] By implementing this application, the following beneficial effects are achieved:

[0033] The present application arranges the heat recovery heat exchanger and the first reversing valve at the outlet of the compressor, so that the high-temperature and high-pressure refrigerant output from the compressor flows into the heat recovery heat exchanger, thereby achieving cooling and preparing hot water through the full heat recovery mode at the same time, improving heat exchange efficiency, and quickly preparing hot water. It can also switch to the waste heat recovery mode under corresponding circumstances. In addition, it can also prepare hot water while heating and purely prepare hot water, thereby fully utilizing heat and improving the flexibility, energy efficiency and stability of the system in different modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0035] FIG1 is a schematic diagram of an air source heat pump system of the present application;

[0036] FIG2 is a schematic diagram of the refrigerant flow of the air source heat pump system of the present application in which hot water is prepared through a full heat recovery mode while cooling;

[0037] FIG3 is a schematic diagram of the flow direction of the first refrigerant in the air source heat pump system of the present application for preparing hot water through waste heat recovery mode while cooling;

[0038] FIG4 is a schematic diagram of the flow direction of the second refrigerant in the air source heat pump system of the present application for preparing hot water through waste heat recovery mode while cooling;

[0039] FIG5 is a schematic diagram of the flow direction of the first refrigerant in the air source heat pump system of the present application for preparing hot water while heating;

[0040] FIG6 is a schematic diagram of the flow direction of the second refrigerant in the air source heat pump system of the present application for preparing hot water while heating;

[0041] FIG7 is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the present application when preparing hot water only;

[0042] FIG8 is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the present application in cooling mode;

[0043] FIG9 is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the present application in the heating mode. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of this application, the specific implementation methods of this application are now described in detail with reference to the accompanying drawings.

[0045] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0046] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. 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 indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "located at," and "located at" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or chemical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0048] As shown in FIG1 , an embodiment of the present application discloses an air source heat pump system, including a compressor 11, a heat recovery heat exchanger 12, a first reversing valve 13, an air conditioning side heat exchanger 14, and an outdoor side heat exchanger 15, as follows:

[0049] The compressor 11 is used to compress refrigerant. The heat recovery heat exchanger 12 includes a refrigerant inlet 121 and a refrigerant outlet 122 connected to the refrigerant inlet 121. The refrigerant inlet 121 is connected to the outlet of the compressor 11. 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 air conditioning side heat exchanger 14 or the outdoor side heat exchanger 15 via a pipeline. The third valve port 133 is connected to the outdoor side heat exchanger 15 or the air conditioning side heat exchanger 14 via a pipeline. The first valve port 131 is connected to the second valve port 132, or the first valve port 131 is connected to the third valve port 133.

[0050] In some embodiments, the first reversing valve 13 is a three-way valve, and a second one-way valve 19 is provided on the refrigerant pipeline connecting the second valve port 132 to the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15, and its conduction direction is toward the air-conditioning side heat exchanger 14 or the outdoor side heat exchanger 15, 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.

[0051] Among them, when the first valve port 131 is connected to the second valve port 132, and the second valve port 132 is connected to the air-conditioning side heat exchanger 14 through a pipeline, that is, in the cooling and full heat recovery domestic hot water mode, the refrigerant comes out of the compressor 11 and passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the second valve port 132 and the air-conditioning side heat exchanger 14 to form a cooling refrigerant circuit, and at the same time all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0052] When the first valve port 131 is connected to the third valve port 133, and the third valve port 133 is connected to the outdoor heat exchanger 15 through a pipeline, that is, in the refrigeration and waste heat recovery (also called partial heat recovery) domestic hot water production mode, the refrigerant comes out of the compressor 11 and passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the third valve port 133, the outdoor heat exchanger 15 and the air-conditioning side heat exchanger 14 to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0053] When the first valve port 131 is connected to 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 and domestic hot water mode, the refrigerant comes out of the compressor 11 and 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, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0054] When the first valve port 131 is connected to the second valve port 132, and the second valve port 132 is connected to the outdoor heat exchanger 15 through a pipeline, that is, in pure hot water mode, the refrigerant comes out of the compressor 11 and passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 131, the second valve port 132 and the outdoor heat exchanger 15 to form a pure hot water refrigerant circuit, and at the same time all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0055] In this embodiment, the heat recovery heat exchanger 12 further includes a water inlet 123 and a water outlet 124 connected to the water inlet 123. The air source heat pump system further includes a domestic water tank 16, which is connected to the water inlet 123 and the water outlet 124, respectively. All or at least part of the heat of the refrigerant output by the compressor 11 is heat-exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water.

[0056] Specifically, when preparing hot water while cooling in the summer, if the water is initially at 30°C and the target temperature is 60°C, waste heat recovery mode can be used, but the heat exchange efficiency is low. Therefore, to address the issues of low heat exchange efficiency in both cooling and waste heat recovery modes and the impact on the switching of the third reversing valve 22, a full heat recovery mode is provided. The entire 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, improving heat exchange efficiency and rapidly preparing hot water. The refrigerant then becomes liquid refrigerant after exiting the refrigerant outlet 122 and enters the air conditioning-side heat exchanger 14 through the second valve port 132. When the water temperature reaches a preset value (e.g., 50°C), the temperature difference between the refrigerant and water is small, so the system can switch to waste heat recovery mode. If the water is initially at 50°C and the target temperature is 60°C, waste heat recovery mode can be used directly. It should be noted that the temperature data listed above are for illustrative purposes only and do not constitute a limitation of this application.

[0057] In this embodiment, the air-source heat pump system further includes a liquid storage container 17, the input end of which is connected to the second valve port 132, and the output end of which is connected to the air-conditioning-side heat exchanger 14 or the outdoor-side heat exchanger 15 via a pipeline. In cooling and full heat recovery domestic hot water modes, the refrigerant from the compressor 11 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 cooling refrigerant circuit, while all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12. In pure hot water mode, the refrigerant from the compressor 11 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-side heat exchanger 15 to form a pure hot water refrigerant circuit, while all the heat of the refrigerant is exchanged in the heat recovery heat exchanger 12.

[0058] In addition, the input end of the liquid storage container 17 is also connected to the outlet end of the air-conditioning-side heat exchanger 14. The air-source heat pump system also includes a first one-way valve 18, which is arranged in the refrigerant pipeline connecting the input end of the liquid storage container 17 and the outlet end of the air-conditioning-side heat exchanger 14. The first one-way valve 18 is directed toward the input end of the liquid storage container 17, and the second valve port 132 is connected to the output end of the first one-way valve 18. When in the heating and domestic hot water mode, the refrigerant flows from the compressor 11 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 heat exchanger 15 to form a heating refrigerant circuit.

[0059] In this embodiment, the air source heat pump system further includes a second reversing valve 21, which 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 heat exchanger 15 or the air conditioner-side heat exchanger 14 via a pipeline. In some embodiments, the second reversing valve 21 is a three-way valve.

[0060] The air source heat pump system further includes a third reversing valve 22, which 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 connected to the outlet of the compressor 11 and the third valve port 133, respectively. The eighth valve port 222 is connected to the outdoor heat exchanger 15. The ninth valve port 223 is connected to the air conditioner-side heat exchanger 14. The tenth valve port 224 is connected to the inlet of the compressor 11. In some embodiments, the third reversing valve 22 is a four-way valve, and the tenth valve port 224 is connected to the inlet of the compressor 11 via the gas-liquid separator 23.

[0061] In this embodiment, the air-source heat pump system further includes an enthalpy increase module, wherein a first end of the enthalpy increase module is connected to the outdoor heat exchanger 15, the air-conditioning-side heat exchanger 14, or the second valve port 132, and a second end of the enthalpy increase module is connected to the air-conditioning-side heat exchanger 14 or the outdoor heat exchanger 15. The enthalpy increase module includes a main refrigerant circuit and an auxiliary enthalpy increase circuit, and the first and second ends of the enthalpy increase module are the first and second ends of the main refrigerant circuit.

[0062] Specifically, the enthalpy increase module includes a heat exchanger 24 , an auxiliary throttling device 25 and a main throttling device 26 . The heat exchanger 24 includes a refrigerant main inlet 241 , a refrigerant auxiliary inlet 242 , a refrigerant main outlet 243 and a refrigerant auxiliary outlet 244 .

[0063] 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 14 or the outdoor side heat exchanger 15 after passing through the refrigerant main inlet 241, the refrigerant main outlet 243 and the main throttling device 26 in sequence (that is, after passing through the refrigerant main path), and the other path is connected to the enthalpy increase port 111 of the compressor 11 after passing through the auxiliary throttling device 25, the refrigerant auxiliary inlet 242 and the refrigerant auxiliary outlet 244 in sequence (that is, after passing through the enthalpy increase auxiliary path).

[0064] By adding the heat exchanger 24 and the auxiliary throttling device 25 at the outlet of the second valve port 132, the outdoor heat exchanger 15 and the air-conditioning side heat exchanger 14, the refrigerant coming out of the outdoor heat exchanger 15, the air-conditioning side heat exchanger 14 or the second valve port 132 passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. After the refrigerant in the enthalpy increase auxiliary path is throttled and cooled by the auxiliary throttling device 25, it can more efficiently absorb the refrigerant heat from the refrigerant main path in the heat exchanger 24. After absorbing heat, the refrigerant vaporizes and enters the enthalpy increase port 111 of the compressor 11, thereby further reducing the temperature of the refrigerant in the refrigerant main path. In this way, the cooling effect of the terminal 27 can be improved in the cooling mode, and the heating ability of the refrigerant under low temperature conditions can be improved in the heating mode.

[0065] It is understandable 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 increase port 111, but the refrigerant in the enthalpy increase auxiliary circuit can be directly introduced into the gas-liquid separator 23 and enter the compressor 11.

[0066] Specifically, after the temperature of the refrigerant in the main refrigerant circuit is reduced through heat exchange, the temperature is further reduced through the main throttling device 26 before entering 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 cooling effect of the system.

[0067] To prevent excessive pipeline pressure, the air-source heat pump system further includes a pressure relief module, which includes a third one-way valve 20. The inlet of the third one-way valve 20 is connected to the main throttling device 26, and the outlet of the third one-way valve 20 is connected to the seventh valve port 221. In some embodiments, the inlet of the third one-way valve 20 is also connected to the outlet of the outdoor heat exchanger 15.

[0068] In different situations, different valve ports will be connected, as follows:

[0069] As shown in Figure 2, in the cooling and full heat recovery domestic hot water mode, the fourth valve port 211 is connected to the fifth valve port 212, the first valve port 131 is connected to the second valve port 132, and the ninth valve port 223 is connected to the tenth valve port 224. That is, when hot water needs to be prepared quickly in the cooling 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 a 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 liquid storage container 17. The medium-temperature liquid output from the liquid storage container 17 passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is turned into a low-temperature liquid after its temperature is reduced by heat exchange, and is further throttled and cooled by the main throttling device 26 to become a low-temperature liquid with a lower temperature, 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 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 back and forth. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, so that all the condensation heat originally used for heat exchange with the air in the outdoor heat exchanger 15 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 15 and the air. The recovered heat is exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to quickly prepare hot water, improve energy utilization, and improve heat exchange efficiency.

[0070] As shown in FIG3 , in the cooling and waste heat recovery domestic hot water production mode, the fourth valve port 211 is connected to the fifth valve port 212, the first valve port 131 is connected to the third valve port 133, the seventh valve port 221 is connected to the eighth valve port 222, and the ninth valve port 223 is connected to the tenth valve port 224. That is, when hot water needs to be produced in the cooling 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 before entering the refrigerant inlet 121 of the heat recovery heat exchanger 12. In the heat recovery heat exchanger 12, the high-temperature gas exchanges heat with the water in the domestic water tank 16, and after producing hot water, it 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, as well as the seventh valve port of the third reversing valve 22. 221 and the eighth valve port 222, 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 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 increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is turned into a low-temperature liquid after its temperature is reduced by heat exchange, and is further throttled and cooled by the main throttling device 26 to become a low-temperature liquid with a lower temperature, 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 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 back and forth. 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 the air in the outdoor heat exchanger 15 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 15 and the air. The recovered heat is exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0071] Specifically, the difference between the embodiments shown in Figure 3 and Figure 2 is that Figure 3 recovers at least part of the condensation heat originally used by the outdoor heat exchanger 15 for heat exchange with the air, while Figure 2 recovers all of the condensation heat originally used by the outdoor heat exchanger 15 for heat exchange with the air.

[0072] As shown in Figure 4, in the cooling mode and the waste heat recovery domestic hot water mode, the fourth valve port 211 is connected to the fifth valve port 212 and the sixth valve port 213 respectively, the first valve port 131 is connected to the third valve port 133, the seventh valve port 221 is connected to the eighth valve port 222, and the ninth valve port 223 is connected to the tenth valve port 224. That is, when hot water needs to be prepared in the cooling 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. The other way 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 enter the third refrigerant port 151 of the outdoor heat exchanger 15, and the medium-temperature gas condenses and releases heat in the outdoor heat exchanger 15 to become 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 increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 to become a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is turned into a low-temperature liquid after its temperature is reduced by heat exchange, and is further throttled and cooled by the main throttling device 26 to become a low-temperature liquid with a lower temperature, 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 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 back and forth. 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 the air in the outdoor heat exchanger 15 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 15 and the air. The recovered heat is exchanged with the water in the domestic water tank 16 in the heat recovery heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0073] Specifically, the difference between the embodiments shown in Figure 4 and Figure 3 is that, in the embodiment shown in Figure 4, an additional refrigerant 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 enters the outdoor heat exchanger 15, which can better regulate the amount of refrigerant entering the heat recovery heat exchanger 12, and the refrigerant coming out of the compressor 11 directly reaching the third reversing valve 22 can be guaranteed to be the gaseous refrigerant, while the refrigerant passing through the heat recovery heat exchanger 12 may contain liquid refrigerant after heat exchange. The pure gaseous refrigerant can better ensure that the third reversing valve 22 has sufficient pressure difference for reversing, so the pressure loss of the refrigerant pipeline is small, and the second reversing valve 21 is not easily affected by impurities, so that the system operates stably.

[0074] As shown in FIG5 , in the heating plus domestic hot water mode, the fourth valve port 211 is connected to the fifth valve port 212, the first valve port 131 is connected to the third valve port 133, the seventh valve port 221 is connected to the ninth valve port 223, and the eighth valve port 222 is connected to 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 before entering 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 after preparing hot water, it 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. The medium-temperature gas enters the second refrigerant port 142 of the air-conditioning side heat exchanger 14, and is converted into a medium-temperature liquid after heat exchange with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 passes through the liquid storage container 17 and then passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 is converted into a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is cooled by heat exchange and becomes a low-temperature liquid. It is then throttled and cooled by the main throttling device 26 to become an even lower-temperature liquid. The liquid 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, becoming 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, repeating the cycle. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, allowing for simultaneous heating in winter and hot water production, thereby improving energy efficiency.

[0075] As shown in Figure 6, in the heating and domestic hot water mode, the fourth valve port 211 is connected to the fifth valve port 212 and the sixth valve port 213 respectively, the first valve port 131 is connected to the third valve port 133, the seventh valve port 221 is connected to the ninth valve port 223, and the eighth valve port 222 is connected to 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 enters the refrigerant inlet 121 of the heat recovery heat exchanger 12 after passing through the fourth valve port 211 and the fifth valve port 212 of the second reversing valve 21 on one path, and 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 on the other path. 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 211 of the first reversing valve 13 and the ninth valve port 223 on the other path. The valve port 131 and the third valve port 133 and the seventh valve port 221 and the ninth valve port 223 of the third reversing valve 22 enter the second refrigerant port 142 of the air-conditioning side heat exchanger 14, and the medium-temperature gas is heat-exchanged with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14 to become a medium-temperature liquid. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 passes through the liquid storage container 17 and then passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is cooled by heat exchange and becomes a low-temperature liquid. It is then throttled and cooled by the main throttling device 26 to become an even lower-temperature liquid. The liquid 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, becoming 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, repeating the cycle. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, allowing for simultaneous heating in winter and hot water production, thereby improving energy efficiency.

[0076] Specifically, the difference between the embodiments shown in Figure 6 and Figure 5 is that, in the embodiment shown in Figure 6, the refrigerant 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, and the refrigerant coming out of the compressor 11 directly reaching the third reversing valve 22 can be guaranteed to be the gaseous refrigerant, while the refrigerant passing through the heat recovery heat exchanger 12 may contain liquid refrigerant after heat exchange. The pure gaseous refrigerant can better ensure that the third reversing valve 22 has sufficient pressure difference for reversing, so the pressure loss of the refrigerant pipeline is small, and the second reversing valve 21 is not easily affected by impurities, so that the system operates stably.

[0077] As shown in FIG. 7 , in pure hot water mode, the fourth valve port 211 is connected to the fifth valve port 212 , the first valve port 131 is connected to the second valve port 132 , and the eighth valve port 222 is connected to 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 liquid storage container 17. The medium-temperature liquid output from the liquid storage container 17 passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase 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 becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is cooled by heat exchange and becomes a low-temperature liquid. It is then throttled and cooled by the main throttling device 26 to become an even lower-temperature liquid. The liquid 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, becoming 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, repeating the cycle. The heat recovery heat exchanger 12 is connected to the domestic water tank 16, allowing all the heat from the compressor 11 to be used solely in the heat recovery heat exchanger 12 for heat exchange with the water in the domestic water tank 16. This allows for targeted energy utilization, shortens the refrigerant circuit when producing hot water, and eliminates the need to pass through the air conditioning side heat exchanger 14, resulting in higher heat exchange efficiency.

[0078] As shown in FIG. 8 , in the cooling mode, the fourth valve port 211 is in communication with the sixth valve port 213 , the seventh valve port 221 is in communication with the eighth valve port 222 , and the ninth valve port 223 is in communication with the tenth valve port 224 . That is, when cooling alone is performed in summer, the high-temperature gas output from the outlet of the compressor 11 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 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 circuit and the enthalpy increase auxiliary circuit respectively. The medium-temperature liquid in the enthalpy increase auxiliary circuit 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 circuit in the heat exchanger 24 and becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is turned into a low-temperature liquid after its temperature is reduced by heat exchange, and is further throttled and cooled by the main throttling device 26 to become a low-temperature liquid with a lower temperature, 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 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 back and forth.

[0079] As shown in FIG. 9 , in the heating mode, the fourth valve port 211 is communicated with the sixth valve port 213 , the seventh valve port 221 is communicated with the ninth valve port 223 , and the eighth valve port 222 is communicated with the tenth valve port 224 . That is, when heating alone is used in winter, the high-temperature gas output from the outlet of the compressor 11 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 is heat-exchanged with the circulating water in the terminal 27 in the air-conditioning side heat exchanger 14 and becomes a medium-temperature liquid. The medium-temperature liquid output from the first refrigerant port 141 of the air-conditioning side heat exchanger 14 passes through the liquid storage container 17 and then passes through the refrigerant main path and the enthalpy increase auxiliary path respectively. The medium-temperature liquid in the enthalpy increase auxiliary path is throttled and cooled by the auxiliary throttling device 25 and becomes a low-temperature liquid. The low-temperature liquid absorbs the refrigerant heat from the refrigerant main path in the heat exchanger 24 and becomes a relatively low-temperature gas, and finally enters the enthalpy increase port 111 of the compressor 11. The medium-temperature liquid in the main refrigerant circuit is turned into a low-temperature liquid after its temperature is reduced by heat exchange, and is further throttled and cooled by the main throttling device 26 to become a low-temperature liquid with a lower temperature, 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 to become 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 returns to the inlet of the compressor 11, and the cycle repeats.

[0080] It should be noted here that the above-mentioned high, medium and low temperatures are only relative expressions, and gas can also refer to a gas-liquid two-phase state or a gaseous state, which is not limited here.

[0081] In some specific embodiments, the outdoor side heat exchanger 15 is a fin type heat exchanger, the air conditioning side heat exchanger 14 is a plate type heat exchanger, the heat recovery heat exchanger 12 is a shell and tube type heat exchanger, the auxiliary throttling device 25 and the main throttling device 26 are electronic expansion valves or thermal expansion valves, and the terminal 27 may include an air disk and / or floor heating installed indoors, and may further include a hydraulic module connected between the air conditioning side heat exchanger 14 and the air disk and / or floor heating, which is not limited here.

[0082] By implementing this application, the following beneficial effects are achieved:

[0083] The present application arranges the heat recovery heat exchanger and the first reversing valve at the outlet of the compressor, so that the high-temperature and high-pressure refrigerant output from the compressor flows into the heat recovery heat exchanger, thereby achieving cooling and preparing hot water through the full heat recovery mode at the same time, improving heat exchange efficiency, and quickly preparing hot water. It can also switch to the waste heat recovery mode under corresponding circumstances. In addition, it can also prepare hot water while heating and purely prepare hot water, thereby fully utilizing heat and improving the flexibility, energy efficiency and stability of the system in different modes.

[0084] It can be understood that the above embodiments only express some implementation methods of the present application, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all fall within the scope of protection of the present application, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the present application should fall within the scope of coverage of the claims of the present application.

Claims

1. An air source heat pump system, It is 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 communicating with the refrigerant inlet, the refrigerant inlet being connected to the outlet of the compressor; Outdoor side heat exchanger and air conditioning side heat exchanger; A first reversing valve, wherein the first reversing valve comprises a first valve port, a second valve port and a third valve port, wherein the first valve port is connected to the refrigerant outlet, the second valve port 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, and the first valve port is communicated with the second valve port or the first valve port is communicated with the third valve port; Wherein, when the first valve port is communicated with the second valve port, and the second 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 second valve port 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 connected to the third valve port, and the third valve port 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 third valve port, the outdoor heat exchanger and the air-conditioning side heat exchanger to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the heat recovery heat exchanger.

2. The air source heat pump system according to claim 1, It is characterized in that 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 second valve port 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 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.

3. The air source heat pump system according to claim 1 or 2, It is 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 1, It is characterized in that The air source heat pump system further comprises: A liquid storage container, wherein the input end of the liquid storage container is connected to the second valve port, and 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.

5. The air source heat pump system according to claim 4, It is 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.

6. The air source heat pump system according to claim 1, It is 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.

7. The air source heat pump system according to claim 6, It is characterized in that The air source heat pump system further comprises: a third reversing valve, the third reversing valve comprising a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port, the seventh valve port being connected to the outlet of the compressor and the third valve port respectively, and; 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.

8. The air source heat pump system according to claim 7, It is 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.

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

10. The air source heat pump system according to claim 9, It is 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.

Images