Air source heat pump system

Abstract

The utility model discloses an air source heat pump system. A domestic hot water heat exchanger comprises a refrigerant outlet and a refrigerant inlet. The outdoor heat exchanger comprises a first refrigerant connector and a second refrigerant connector. The air conditioner side heat exchanger comprises a third refrigerant connector and a fourth refrigerant connector. One path of the first throttling module is provided with a first refrigerant flow adjusting device, and the other path is provided with a first one-way valve. One path of the second throttling module is provided with a second refrigerant flow adjusting device, and the other path is provided with a second one-way valve. The refrigerant inlet is connected with an outlet of the compressor. The refrigerant outlet is connected with the inlet end of the bypass pipeline through the first reversing valve and connected with the first refrigerant connector and / or the third refrigerant connector. And the second refrigerant interface is connected with the fourth refrigerant interface through the first throttling module and the second throttling module. And the outlet end of the bypass pipeline is connected between the first throttling module and the second throttling module. The first refrigerant connector and / or the third refrigerant connector are / is connected with an inlet of the compressor. Automatic switching between total heat recovery and partial heat recovery during refrigeration can be achieved, and flexibility in different modes is improved.

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 advancement of science and technology, people have higher and higher requirements for living environment. Air source heat pumps are favored by more and more manufacturers and users because they can solve the energy crisis to a certain extent. The traditional trigeneration air source heat pump system can prepare hot water while cooling, but the speed of preparing hot water is slow and the system has poor flexibility for different scenarios. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an air source heat pump system in view of the defects existing in the related technologies mentioned in the above background technology.

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

[0005] A compressor, the compressor being used to compress the refrigerant;

[0006] A domestic hot water heat exchanger, the domestic hot water heat exchanger comprising a refrigerant inlet and a refrigerant outlet connected to the refrigerant inlet;

[0007] An outdoor heat exchanger, the outdoor heat exchanger comprising a first refrigerant interface and a second refrigerant interface connected to the first refrigerant interface;

[0008] An air-conditioning side heat exchanger, the air-conditioning side heat exchanger comprising a third refrigerant interface and a fourth refrigerant interface connected to the third refrigerant interface;

[0009] a first reversing valve, the first reversing valve being used to switch all or at least part of the heat of the refrigerant to be exchanged in the domestic hot water heat exchanger;

[0010] A first throttling module, wherein the first throttling module comprises two paths, one path is provided with a first refrigerant flow regulating device, and the other path is provided with a first one-way valve;

[0011] A second throttling module, wherein the second throttling module comprises two paths, one path is provided with a second refrigerant flow regulating device, and the other path is provided with a second one-way valve; and

[0012] Bypass piping;

[0013] Wherein, the refrigerant inlet is connected to the outlet of the compressor through a pipeline;

[0014] The refrigerant outlet is connected to the inlet end of the bypass pipeline after passing through the first reversing valve, and the refrigerant outlet is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline after passing through the first reversing valve;

[0015] The second refrigerant interface is connected to the first end of the first throttling module, the second end of the first throttling module is connected to the first end of the second throttling module through a pipeline, and the second end of the second throttling module is connected to the fourth refrigerant interface, wherein the conducting direction of the first one-way valve is toward the first end of the second throttling module, and the conducting direction of the second one-way valve is toward the second end of the first throttling module;

[0016] The outlet end of the bypass pipeline is connected to the pipeline between the second end of the first throttling module and the first end of the second throttling module;

[0017] The first refrigerant interface and / or the third refrigerant interface are connected to the inlet of the compressor through a pipeline.

[0018] In one embodiment, the first reversing valve includes a first valve port, a second valve port and a third valve port;

[0019] The first valve port is connected to the refrigerant outlet, the second valve port is connected to the inlet end of the bypass pipeline, and the third valve port is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline.

[0020] In one embodiment, when the first valve port is connected to the second valve port, and the second valve port is connected to the second refrigerant flow regulating device through the bypass 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 bypass pipeline, the second refrigerant flow regulating device, the fourth refrigerant interface and the third refrigerant interface to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger;

[0021] The first valve port is connected with the third valve port, and when the third valve port is connected with the first refrigerant interface 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 first refrigerant interface, the second refrigerant interface, the first one-way valve, the second refrigerant flow regulating device, the fourth refrigerant interface and the third refrigerant interface to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger.

[0022] In one embodiment, when the first valve port is connected to the third valve port, and the third valve port is connected to the third refrigerant interface 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 third refrigerant interface, the fourth refrigerant interface, the second one-way valve, the first refrigerant flow regulating device, the second refrigerant interface and the first refrigerant interface to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger;

[0023] When the first valve port is connected with the second valve port, and the second valve port is connected with the first refrigerant flow regulating device through the bypass 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 bypass pipeline, the first refrigerant flow regulating device, the second refrigerant interface and the first refrigerant interface to form a refrigerant circuit of pure hot water, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger.

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

[0025] A liquid storage container, the outlet end of the bypass pipeline, the second end of the first throttling module and the first end of the second throttling module are connected to the liquid storage container.

[0026] In one embodiment, the liquid storage container includes a liquid inlet pipe, a first two-way pipe and a second two-way pipe;

[0027] The outlet end of the bypass pipeline is connected to the liquid inlet pipe, the first two-way pipe is connected to the second end of the first throttling module, and the second two-way pipe is connected to the first end of the second throttling module.

[0028] In one embodiment, the liquid inlet pipe leads to the upper part of the liquid storage container, and the first two-way pipe and the second two-way pipe lead to the bottom of the liquid storage container.

[0029] In one embodiment, the air source heat pump system further comprises:

[0030] a second reversing valve, the second reversing valve comprising a fourth valve port, a fifth valve port and a sixth valve port;

[0031] The fourth valve port is connected to the outlet of the compressor; the fifth valve port is connected to the refrigerant inlet; the sixth valve port is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline;

[0032] Wherein, when the fourth valve port is connected to the fifth valve port, the outlet of the compressor is connected to the refrigerant inlet;

[0033] When the fourth valve port is connected to the sixth valve port, the outlet of the compressor is connected to the first refrigerant interface or the third refrigerant interface through a pipeline.

[0034] In one embodiment, the air source heat pump system further comprises:

[0035] 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;

[0036] The seventh valve port is connected to the first reversing valve; the eighth valve port is connected to the first refrigerant interface; the ninth valve port is connected to the inlet of the compressor; the tenth valve port is connected to the third refrigerant interface;

[0037] Wherein, when the seventh valve port is connected to the eighth valve port, the first refrigerant interface is connected to the first reversing valve;

[0038] When the seventh valve port is connected to the tenth valve port, the third refrigerant interface is connected to the first reversing valve;

[0039] When the eighth valve port is connected to the ninth valve port, the first refrigerant interface is connected to the inlet of the compressor;

[0040] When the tenth valve port is connected to the ninth valve port, the third refrigerant interface is connected to the inlet of the compressor.

[0041] In one of the embodiments, the domestic hot water heat exchanger further comprises a first water inlet and a first water outlet communicating with the first water inlet;

[0042] The air source heat pump system further comprises:

[0043] A domestic water tank is connected to the first water inlet and the first water outlet respectively.

[0044] By implementing the utility model, the following beneficial effects are achieved:

[0045] The utility model arranges the first reversing valve at the refrigerant outlet end of the domestic hot water heat exchanger, thereby realizing automatic switching between full heat recovery and partial heat recovery during refrigeration, improving the flexibility in different modes, thus ensuring both the heat recovery capacity and the temperature of the hot water for heat recovery.

[0046] Furthermore, the two sets of parallel refrigerant flow regulating devices and one-way valves can make the circuit in any mode pass through the refrigerant flow regulating device only once, thereby reducing resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0048] Figure 1 It is a schematic diagram of the air source heat pump system of the utility model;

[0049] Figure 2 It is a schematic diagram of the refrigerant flow direction of the utility model air source heat pump system in which hot water is prepared through a full heat recovery mode while cooling;

[0050] Figure 3 This is a schematic diagram of the flow direction of the first refrigerant in the utility model air source heat pump system for preparing hot water through the waste heat recovery mode while cooling;

[0051] Figure 4 It is a schematic diagram of the flow direction of the second refrigerant in the utility model air source heat pump system for preparing hot water through the waste heat recovery mode while cooling;

[0052] Figure 5 This is a schematic diagram of the flow direction of the first refrigerant in the air source heat pump system of the utility model for preparing hot water while heating;

[0053] Figure 6 This is a schematic diagram of the flow direction of the second refrigerant in the air source heat pump system of the utility model for preparing hot water while heating;

[0054] Figure 7 This is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the utility model when purely preparing hot water;

[0055] Figure 8 It is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the utility model in the cooling mode;

[0056] Fig. 9 It is a schematic diagram of the refrigerant flow direction of the air source heat pump system of the utility model in the heating mode. DETAILED DESCRIPTION

[0057] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0058] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0059] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 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 cannot be understood as a limitation on the 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 indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0060] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "located at", and "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 or a chemical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0061] like Figure 1 As shown, one embodiment of the utility model discloses an air source heat pump system, including a compressor 11, a domestic hot water heat exchanger 12, an outdoor side heat exchanger 13, an air conditioning side heat exchanger 14, a first reversing valve 15, a first throttling module, a second throttling module and a bypass pipeline, as follows:

[0062] The compressor 11 is used to compress the refrigerant, and the compressor 11 includes an inlet 111 and an outlet 112. The domestic hot water heat exchanger 12 is used to achieve heat exchange between the refrigerant and the water in the domestic water tank 20, and the domestic hot water heat exchanger 12 includes a refrigerant inlet 121 and a refrigerant outlet 122 connected to the refrigerant inlet 121. The outdoor heat exchanger 13 is used to achieve heat exchange between the refrigerant and the outside air, and the outdoor heat exchanger 13 includes a first refrigerant interface 131 and a second refrigerant interface 132 connected to the first refrigerant interface 131. The air conditioning side heat exchanger 14 is used to achieve heat exchange between the refrigerant and the water in the terminal device 25, and the air conditioning side heat exchanger 14 includes a third refrigerant interface 141 and a fourth refrigerant interface 142 connected to the third refrigerant interface 141. The first reversing valve 15 is used to switch all or at least part of the heat of the refrigerant to be exchanged in the domestic hot water heat exchanger 12. The first throttling module includes two paths, one of which is provided with a first refrigerant flow regulating device 16, and the other is provided with a first one-way valve 17. The second throttling module includes two paths, one of which is provided with a second refrigerant flow regulating device 18, and the other is provided with a second one-way valve 19.

[0063] The refrigerant inlet 121 is connected to the outlet 112 of the compressor 11 through a pipeline.

[0064] The refrigerant outlet 122 is connected to the inlet end of the bypass pipeline after passing through the first reversing valve 15, and the refrigerant outlet 122 is connected to the first refrigerant interface 131 and / or the third refrigerant interface 141 through a pipeline after passing through the first reversing valve 15.

[0065] The second refrigerant interface 132 is connected to the first end of the first throttling module, the second end of the first throttling module is connected to the first end of the second throttling module through a pipeline, and the second end of the second throttling module is connected to the fourth refrigerant interface 142, wherein the conducting direction of the first one-way valve 17 is toward the first end of the second throttling module, and the conducting direction of the second one-way valve 19 is toward the second end of the first throttling module. It should be noted that the direction mentioned here refers to the flow direction of the refrigerant, not the direction of the spatial position.

[0066] The outlet end of the bypass pipeline is connected to the pipeline between the second end of the first throttling module and the first end of the second throttling module.

[0067] The first refrigerant interface 131 and / or the third refrigerant interface 141 are connected to the inlet 111 of the compressor 11 through a pipeline.

[0068] For example, the domestic hot water heat exchanger 12 is a shell and tube heat exchanger, the outdoor side heat exchanger 13 is a fin type heat exchanger, the air conditioning side heat exchanger 14 is a plate type heat exchanger, the first refrigerant flow regulating device 16 and the second refrigerant flow regulating device 18 are electronic expansion valves or thermal expansion valves. The shell and tube heat exchanger, the fin type heat exchanger, the plate type heat exchanger, the electronic expansion valve and the thermal expansion valve here are only examples and are not intended to limit the present application.

[0069] In this embodiment, the first reversing valve 15 is arranged at the refrigerant outlet 122 end of the domestic hot water heat exchanger 12, thereby realizing automatic switching between full heat recovery and partial heat recovery during cooling, thereby improving the flexibility in different modes, thus ensuring both the heat recovery capacity and the temperature of the hot water after heat recovery.

[0070] Furthermore, the two sets of parallel refrigerant flow regulating devices and one-way valves can make the circuit in any mode pass through the refrigerant flow regulating device only once, thereby reducing resistance.

[0071] In some embodiments, the first reversing valve 15 includes a first valve port 151, a second valve port 152, and a third valve port 153. The first valve port 151 is connected to the refrigerant outlet 122. The second valve port 152 is connected to the inlet end of the bypass pipeline. The third valve port 153 is connected to the first refrigerant interface 131 and / or the third refrigerant interface 141 through a pipeline. For example, the first reversing valve 15 is a three-way valve, and the three-way valve here is only an example and is not intended to limit the present application.

[0072] Among them, when the first valve port 151 is connected with the second valve port 152, and the second valve port 152 is connected with the second refrigerant flow regulating device 18 through the bypass pipeline, that is, in the cooling and full heat recovery domestic hot water mode, the first refrigerant flow regulating device 16 is closed and the second refrigerant flow regulating device 18 is opened. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the second valve port 152, the bypass pipeline, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a cooling refrigerant circuit, and all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0073] When the first valve port 151 is connected with the third valve port 153, and the third valve port 153 is connected with the first refrigerant interface 131 through a pipeline, that is, in the refrigeration and waste heat recovery (also called partial heat recovery) domestic hot water mode, the first refrigerant flow regulating device 16 is closed and the second refrigerant flow regulating device 18 is opened. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the third valve port 153, the first refrigerant interface 131, the second refrigerant interface 132, the first one-way valve 17, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0074] The first valve port 151 is connected with the third valve port 153. When the third valve port 153 is connected with the third refrigerant interface 141 through a pipeline, that is, in the heating plus domestic hot water mode, the second refrigerant flow regulating device 18 is closed and the first refrigerant flow regulating device 16 is opened. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the third valve port 153, the third refrigerant interface 141, the fourth refrigerant interface 142, the second one-way valve 19, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0075] When the first valve port 151 is connected with the second valve port 152, and the second valve port 152 is connected with the first refrigerant flow regulating device 16 through the bypass pipeline, that is, in the pure hot water mode, the first refrigerant flow regulating device 16 is turned on and the second refrigerant flow regulating device 18 is turned off. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the second valve port 152, the bypass pipeline, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a pure hot water refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0076] In some embodiments, the domestic hot water heat exchanger 12 further includes a first water inlet 123 and a first water outlet 124 connected to the first water inlet 123. The air source heat pump system further includes a domestic water tank 20, which is used to store domestic water. The domestic water tank 20 is connected to the first water inlet 123 and the first 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 20 in the domestic hot water heat exchanger 12 to prepare hot water. Specifically, the domestic water tank 20 includes a cold water inlet 201, a water outlet 202, a return water outlet 203 and a hot water outlet 204. The water outlet 202 is connected to the first water inlet 123, and the first water outlet 124 is connected to the return water outlet 203.

[0077] In some embodiments, the air source heat pump system also includes a hot water pump 21, which is arranged in the water inlet pipe (the pipe connecting the water outlet 202 and the first water inlet 123) or the water outlet pipe (the pipe connecting the first water outlet 124 and the return water port 203) of the domestic hot water heat exchanger 12, and the hot water pump 21 is used to provide power for the water circulation between the domestic hot water heat exchanger 12 and the domestic water tank 20.

[0078] Specifically, in summer, when preparing hot water while cooling, if the water is initially 30°C and the target is to be heated to 60°C, the waste heat recovery mode can be used, but the hot water production speed is slow. Therefore, in order to solve the problem of slow hot water production speed and affecting the reversing of the third reversing valve 24 in the cooling and waste heat recovery modes, a full heat recovery mode is provided. All the heat of the refrigerant output by the compressor 11 is heat exchanged with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12, which can increase the hot water production speed and quickly prepare hot water. The refrigerant becomes liquid refrigerant after coming out of the refrigerant outlet 122, and then passes through the second valve port 152 and the bypass pipeline, and then enters the air conditioning side heat exchanger 14 after throttling and cooling by the second refrigerant flow regulating device 18. When the water temperature reaches the preset value (for example, 50°C), at this time, due to the small temperature difference between the refrigerant and the water, it can be switched to the waste heat recovery mode. If the water is initially 50°C and the target is to be heated to 60°C, the waste heat recovery mode can be directly used. It should be noted that the temperature data listed above are only for illustration and are not intended to limit the present application.

[0079] In some embodiments, the air source heat pump system also includes a liquid storage container 22, which is used to store liquid refrigerant. The outlet end of the bypass pipeline, the second end of the first throttling module (i.e., the outlet end of the first one-way valve 17 or the inlet end of the first refrigerant flow regulating device 16) and the first end of the second throttling module (i.e., the inlet end of the second refrigerant flow regulating device 18 or the outlet end of the second one-way valve 19) are connected to the liquid storage container 22.

[0080] In some embodiments, the liquid storage container 22 includes a liquid inlet pipe 221, a first two-way pipe 222, and a second two-way pipe 223. The two-way pipes can take in and out liquid. For example, during cooling, the first two-way pipe 222 can take in liquid, and the second two-way pipe 223 can take out liquid. During heating, the second two-way pipe 223 can take in liquid, and the first two-way pipe 222 can take out liquid. The outlet end of the bypass pipeline is connected to the liquid inlet pipe 221, the first two-way pipe 222 is connected to the second end of the first throttling module (i.e., the outlet end of the first one-way valve 17 or the inlet end of the first refrigerant flow regulating device 16), and the second two-way pipe 223 is connected to the first end of the second throttling module (i.e., the inlet end of the second refrigerant flow regulating device 18 or the outlet end of the second one-way valve 19).

[0081] In this embodiment, three tubes (the liquid inlet tube 221, the first two-way tube 222 and the second two-way tube 223) are arranged in the liquid storage container 22. The refrigerant outlet 122 of the domestic hot water heat exchanger 12 can be directly connected to the liquid inlet tube 221 through the bypass pipeline, thereby reducing the complexity of the system circuit and eliminating the need to additionally arrange valve switches such as one-way valves and stop valves.

[0082] Furthermore, the first two-way pipe 222 and the second two-way pipe 223 of the liquid storage container 22 are respectively connected to the outdoor side heat exchanger 13 and the air conditioning side heat exchanger 14, so as to realize two-way flow, thereby realizing multiple modes of operation of the system.

[0083] Among them, in the above-mentioned refrigeration 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 151, the second valve port 152, the bypass pipeline, the liquid inlet pipe 221, the second two-way pipe 223, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0084] In the above-mentioned refrigeration and waste 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 151, the third valve port 153, the first refrigerant interface 131, the second refrigerant interface 132, the first one-way valve 17, the first two-way pipe 222, the second two-way pipe 223, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0085] In the above-mentioned heating plus 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 151, the third valve port 153, the third refrigerant interface 141, the fourth refrigerant interface 142, the second one-way valve 19, the second two-way pipe 223, the first two-way pipe 222, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12;

[0086] In the above-mentioned 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 151, the second valve port 152, the bypass pipeline, the liquid inlet pipe 221, the first two-way pipe 222, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a pure hot water refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0087] In some embodiments, the liquid inlet pipe 221 leads to the upper portion of the liquid storage container 22 , and the first two-way pipe 222 and the second two-way pipe 223 lead to the bottom portion of the liquid storage container 22 .

[0088] In some embodiments, the air source heat pump system further includes a second reversing valve 23, the second reversing valve 23 is used to regulate the amount of refrigerant entering the domestic hot water heat exchanger 12, and the second reversing valve 23 includes a fourth valve port 231, a fifth valve port 232, and a sixth valve port 233. The fourth valve port 231 is connected to the outlet 112 of the compressor 11. The fifth valve port 232 is connected to the refrigerant inlet 121. The sixth valve port 233 is connected to the first refrigerant interface 131 and / or the third refrigerant interface 141 through a pipeline. For example, the second reversing valve 23 is a three-way valve, and the three-way valve here is only an example and is not intended to limit the present application.

[0089] When the fourth valve port 231 is connected to the fifth valve port 232, the outlet 112 of the compressor 11 is connected to the refrigerant inlet 121. When the fourth valve port 231 is connected to the sixth valve port 233, the outlet 112 of the compressor 11 is connected to the first refrigerant interface 131 or the third refrigerant interface 141 through a pipeline.

[0090] In some embodiments, the air source heat pump system further includes a third reversing valve 24, the third reversing valve 24 is used to switch between the cooling mode and the heating mode, and the third reversing valve 24 includes a seventh valve port 241, an eighth valve port 242, a ninth valve port 243 and a tenth valve port 244. The seventh valve port 241 is connected to the first reversing valve 15 (specifically, the third valve port 153 of the first reversing valve 15), and / or the seventh valve port 241 is connected to the outlet 112 of the compressor 11 (specifically, the sixth valve port 233 of the second reversing valve 23) through a pipeline. The eighth valve port 242 is connected to the first refrigerant interface 131. The ninth valve port 243 is connected to the inlet 111 of the compressor 11. The tenth valve port 244 is connected to the third refrigerant interface 141. For example, the third reversing valve 24 is a three-way valve, and the three-way valve here is only an example and is not intended to limit the present application.

[0091] Among them, when the seventh valve port 241 is connected with the eighth valve port 242, the first refrigerant interface 131 is connected with the first reversing valve 15 (specifically, the third valve port 153 of the first reversing valve 15), and / or the first refrigerant interface 131 is connected with the outlet 112 of the compressor 11 (specifically, the sixth valve port 233 of the second reversing valve 23) through a pipeline.

[0092] When the seventh valve port 241 is connected with the tenth valve port 244, the third refrigerant interface 141 is connected with the first reversing valve 15 (specifically, the third valve port 153 of the first reversing valve 15), and / or the third refrigerant interface 141 is connected with the outlet 112 of the compressor 11 (specifically, the sixth valve port 233 of the second reversing valve 23) through a pipeline.

[0093] When the eighth valve port 242 is connected to the ninth valve port 243 , the first refrigerant interface 131 is connected to the inlet 111 of the compressor 11 .

[0094] When the tenth valve port 244 is connected to the ninth valve port 243 , the third refrigerant interface 141 is connected to the inlet 111 of the compressor 11 .

[0095] In some embodiments, the air source heat pump system also includes the terminal device 25, and the air-conditioning side heat exchanger 14 is used to realize heat exchange between the refrigerant and the water in the terminal device 25. Therefore, the air-conditioning side heat exchanger 14 also includes a second water inlet 143 and a second water outlet 144 connected to the second water inlet 143. The outlet of the terminal device 25 is connected to the second water inlet 143 of the air-conditioning side heat exchanger 14, and the second water outlet 144 of the air-conditioning side heat exchanger 14 is connected to the inlet of the terminal device 25.

[0096] The terminal device 25 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. The air disk, floor heating and hydraulic module mentioned here are only examples and are not intended to limit the present invention.

[0097] In some embodiments, the air source heat pump system also includes an air-conditioning side water pump 26, which is arranged in the water inlet pipe of the air-conditioning side heat exchanger 14 (the pipe connecting the outlet of the terminal device 25 with the second water inlet 143 of the air-conditioning side heat exchanger 14) or the water outlet pipe (the pipe connecting the second water outlet 144 of the air-conditioning side heat exchanger 14 with the inlet of the terminal device 25), and the air-conditioning side water pump 26 is used to provide power for the water circulation between the air-conditioning side heat exchanger 14 and the terminal device 25.

[0098] In some embodiments, the air source heat pump system further includes a gas-liquid separator 27 , and the gas-liquid separator 27 is used to separate the gaseous refrigerant and the liquid refrigerant. The gas-liquid separator 27 is disposed at the inlet end of the compressor 11 .

[0099] In some embodiments, in order to facilitate the release of pressure in the refrigerant pipeline during system maintenance, the air source heat pump system also includes a pressure relief module, and the pressure relief module includes a third one-way valve 28, the inlet end of the third one-way valve 28 is connected to the pipeline between the first refrigerant flow regulating device 16 and the second refrigerant flow regulating device 18 (specifically, the first two-way pipe 222 or the second two-way pipe 223 of the liquid storage container 22), and the outlet end of the third one-way valve 28 is connected to the pipeline between the compressor 11 and the third reversing valve 24 (specifically, the seventh valve port 241 of the third reversing valve 24), and the conduction direction of the third one-way valve 28 is toward the pipeline between the compressor 11 and the third reversing valve 24, wherein the direction refers to the flow direction of the refrigerant, not the direction of the spatial position.

[0100] Completely, as Figure 1As shown, the connection relationship between the above-mentioned components is as follows: the outlet 112 of the compressor 11 is connected to the fourth valve port 231 of the second reversing valve 23, the fifth valve port 232 of the second reversing valve 23 is connected to the refrigerant inlet 121 of the domestic hot water heat exchanger 12, and the sixth valve port 233 of the second reversing valve 23 is connected to the seventh valve port 241 of the third reversing valve 24; the refrigerant outlet 122 of the domestic hot water heat exchanger 12 is connected to the first valve port 151 of the first reversing valve 15, and the second valve port 152 of the first reversing valve 15 is connected to the liquid inlet pipe 221 of the liquid storage container 22 The third valve port 153 of the first reversing valve 15 is connected to the seventh valve port 241 of the third reversing valve 24; the water outlet 202 of the domestic water tank 20 is connected to the first water inlet 123 of the domestic hot water heat exchanger 12 via the hot water pump 21, and the first water outlet 124 of the domestic hot water heat exchanger 12 is connected to the return water port 203 of the domestic water tank 20; the eighth valve port 242 of the third reversing valve 24 is connected to the first refrigerant interface 131 of the outdoor heat exchanger 13; the second refrigerant interface 132 of the outdoor heat exchanger 13 is connected to the first refrigerant interface 131 of the outdoor heat exchanger 13 via the first one-way valve 17. The first two-way pipe 222 of the liquid storage container 22 is connected, the conduction direction of the first one-way valve 17 is toward the first two-way pipe 222, the second refrigerant interface 132 of the outdoor heat exchanger 13 is connected to the first two-way pipe 222 of the liquid storage container 22 through the first refrigerant flow regulating device 16; the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 is connected to the second two-way pipe 223 of the liquid storage container 22 through the second refrigerant flow regulating device 18, and the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 is connected to the liquid storage container 22 through the second one-way valve 19. The second two-way pipe 223 of the air conditioner side heat exchanger 14 is connected, and the conduction direction of the second one-way valve 19 is toward the second two-way pipe 223; the third refrigerant interface 141 of the air conditioner side heat exchanger 14 is connected to the tenth valve port 244 of the third reversing valve 24, and the ninth valve port 243 of the third reversing valve 24 is connected to the inlet 111 of the compressor 11 through the gas-liquid separator 27; the outlet of the terminal device 25 is connected to the second water inlet 143 of the air conditioner side heat exchanger 14 through the air conditioner side water pump 26, and the second water outlet 144 of the air conditioner side heat exchanger 14 is connected to the inlet of the terminal device 25. It should be noted here that the connection between the above interfaces, between the interface and the components, or between the components is only a physical structural connection, and does not uniquely define the connectivity relationship and refrigerant flow relationship therein.

[0101] In different situations, the air source heat pump system will correspond to different valve ports, as follows:

[0102] like Figure 2As shown, in the cooling and full heat recovery domestic hot water mode, the fourth valve port 231 of the second reversing valve 23 is connected with the fifth valve port 232, the first valve port 151 of the first reversing valve 15 is connected with the second valve port 152, the tenth valve port 244 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is closed, and the second refrigerant flow regulating device 18 is opened. That is, when hot water needs to be prepared quickly in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 first passes through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23 and then enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12, and the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12, and becomes a medium-temperature liquid refrigerant after preparing hot water, and the medium-temperature liquid refrigerant output from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the second valve port 152 of the first reversing valve 15 and then enters the liquid inlet pipe 221 of the liquid storage container 22, and the second valve port 152 of the liquid storage container 22 The medium-temperature liquid refrigerant output by the two-way pipe 223 is throttled and cooled by the second refrigerant flow regulating device 18 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the third refrigerant interface 141 of the air-conditioning side heat exchanger 14 passes through the tenth valve port 244 and the ninth valve port 243 of the third reversing valve 24, and then passes through the gas-liquid separator 27 and returns to the inlet 111 of the compressor 11, and circulates back and forth. The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that all the condensation heat originally used for heat exchange with the air by the outdoor heat exchanger 13 can be recovered and utilized during summer cooling, avoiding the waste of all heat in the heat exchange between the outdoor heat exchanger 13 and the air. The recovered heat is exchanged with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 to quickly prepare hot water, improve energy utilization, and increase the speed of hot water production.

[0103] like Figure 3As shown, in the refrigeration and waste heat recovery domestic hot water mode, the fourth valve port 231 of the second reversing valve 23 is connected with the fifth valve port 232, the first valve port 151 of the first reversing valve 15 is connected with the third valve port 153, the seventh valve port 241 of the third reversing valve 24 is connected with the eighth valve port 242, the tenth valve port 244 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is closed, and the second refrigerant flow regulating device 18 is opened. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 first passes through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23 and then enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the third valve port 153 of the first reversing valve 15 and the seventh valve port 241 and the eighth valve port 242 of the third reversing valve 24 and then enters the first refrigerant interface 131 of the outdoor heat exchanger 13. The medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 13 and becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant interface 132 of 3 enters the first two-way pipe 222 of the liquid storage container 22 after passing through the first one-way valve 17, and the medium-temperature liquid refrigerant output from the second two-way pipe 223 of the liquid storage container 22 becomes a low-temperature liquid refrigerant with a lower temperature after throttling and cooling through the second refrigerant flow regulating device 18, and then enters the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14, and the low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant, and the low-temperature gaseous refrigerant output from the third refrigerant interface 141 of the air-conditioning side heat exchanger 14 passes through the tenth valve port 244 and the ninth valve port 243 of the third reversing valve 24 and then returns to the inlet 111 of the compressor 11 through the gas-liquid separator 27, and circulates back and forth. The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that at least part of the condensation heat originally used for heat exchange with the air in the outdoor heat exchanger 13 can be recovered and utilized during summer cooling, thereby avoiding that all heat is wasted in heat exchange between the outdoor heat exchanger 13 and the air. The recovered heat is exchanged with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0104] Specifically, Figure 3 and Figure 2 The difference between the shown embodiments is that Figure 3In order to recycle at least part of the condensation heat originally used for heat exchange with air by the outdoor heat exchanger 13, Figure 2 This is to recover and utilize all the condensation heat originally used by the outdoor heat exchanger 13 for heat exchange with the air.

[0105] like Figure 4As shown, in the cooling mode and the waste heat recovery domestic hot water mode, the fourth valve port 231 of the second reversing valve 23 is respectively connected with the fifth valve port 232 and the sixth valve port 233, the first valve port 151 of the first reversing valve 15 is connected with the third valve port 153, the seventh valve port 241 of the third reversing valve 24 is connected with the eighth valve port 242, the tenth valve port 244 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is closed, and the second refrigerant flow regulating device 18 is opened. That is, when hot water needs to be prepared in the cooling mode, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12 after passing through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23, and the other way passes through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the eighth valve port 242 of the third reversing valve 24 and enters the refrigerant inlet 121 of the outdoor heat exchanger 13. The first refrigerant interface 131, the high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the third valve port 153 of the first reversing valve 15 and the seventh valve port 241 and the eighth valve port 242 of the third reversing valve 24 and then enters the first refrigerant interface 13 of the outdoor heat exchanger 13. 1, the medium-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 13 to become a medium-temperature liquid refrigerant, the medium-temperature liquid refrigerant output by the second refrigerant interface 132 of the outdoor heat exchanger 13 passes through the first one-way valve 17 and enters the first two-way pipe 222 of the liquid storage container 22, the medium-temperature liquid refrigerant output by the second two-way pipe 223 of the liquid storage container 22 passes through the second refrigerant flow regulating device 18 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the air-conditioning side heat exchanger 1 The fourth refrigerant interface 142 of 4, the low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the third refrigerant interface 141 of the air-conditioning side heat exchanger 14 passes through the tenth valve port 244 and the ninth valve port 243 of the third reversing valve 24 and then passes through the gas-liquid separator 27 and returns to the inlet 111 of the compressor 11, and circulates back and forth.The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that at least part of the condensation heat originally used for heat exchange with the air in the outdoor heat exchanger 13 can be recovered and utilized during summer cooling, thereby avoiding that all heat is wasted in heat exchange between the outdoor heat exchanger 13 and the air. The recovered heat is exchanged with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 to prepare hot water, thereby improving energy utilization.

[0106] Specifically, Figure 4 and Figure 3 The difference between the shown embodiments is that Figure 4 In the embodiment shown, an additional refrigerant path enters the outdoor heat exchanger 13 after passing through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the eighth valve port 242 of the third reversing valve 24, so that the amount of refrigerant entering the domestic hot water heat exchanger 12 can be better regulated, and the refrigerant coming out of the compressor 11 directly reaching the third reversing valve 24 can be guaranteed to be the gaseous refrigerant, while the refrigerant passing through the domestic hot water heat exchanger 12 may contain liquid refrigerant after heat exchange. The pure gaseous refrigerant can better ensure that the third reversing valve 24 has sufficient pressure difference for reversing, so the pressure loss of the refrigerant pipeline is small, and the second reversing valve 23 is not easily affected by impurities, so that the system runs stably.

[0107] like Figure 5As shown, in the heating and domestic hot water mode, the fourth valve port 231 of the second reversing valve 23 is connected with the fifth valve port 232, the first valve port 151 of the first reversing valve 15 is connected with the third valve port 153, the seventh valve port 241 of the third reversing valve 24 is connected with the tenth valve port 244, the eighth valve port 242 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is opened, and the second refrigerant flow regulating device 18 is closed. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant outputted from the outlet 112 of the compressor 11 first passes through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23 and then enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant outputted from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the third valve port 153 of the first reversing valve 15 and the seventh valve port 241 and the tenth valve port 244 of the third reversing valve 24 and then enters the third refrigerant interface 141 of the air-conditioning side heat exchanger 14. The medium-temperature gaseous refrigerant exchanges heat with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14. After the water undergoes heat exchange, it becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output by the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 passes through the second one-way valve 19 and enters the second two-way pipe 223 of the liquid storage container 22. The medium-temperature liquid refrigerant output by the first two-way pipe 222 of the liquid storage container 22 passes through the first refrigerant flow regulating device 16 to become a low-temperature liquid refrigerant with a lower temperature after throttling and cooling, and then enters the second refrigerant interface 132 of the outdoor heat exchanger 13. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 13 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the first refrigerant interface 131 of the outdoor heat exchanger 13 passes through the eighth valve port 242 and the ninth valve port 243 of the third reversing valve 24 and then passes through the gas-liquid separator 27 and returns to the inlet 111 of the compressor 11, repeating the cycle. The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0108] like Figure 6As shown, in the heating and domestic hot water mode, the fourth valve port 231 of the second reversing valve 23 is respectively connected with the fifth valve port 232 and the sixth valve port 233, the first valve port 151 of the first reversing valve 15 is connected with the third valve port 153, the seventh valve port 241 of the third reversing valve 24 is connected with the tenth valve port 244, the eighth valve port 242 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is opened, and the second refrigerant flow regulating device 18 is closed. That is, when hot water needs to be prepared in the heating mode, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12 after passing through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23, and the other way passes through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the tenth valve port 244 of the third reversing valve 24, and then enters the air conditioning side refrigerant. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12, and becomes a medium-temperature gaseous refrigerant after preparing hot water. The medium-temperature gaseous refrigerant output from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the third valve port 153 of the first reversing valve 15 and the seventh valve port 241 and the tenth valve port 244 of the third reversing valve 24 and then enters the air conditioning side heat exchanger 1 The medium-temperature gaseous refrigerant is converted into medium-temperature liquid refrigerant after heat exchange with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14. The medium-temperature liquid refrigerant outputted from the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 passes through the second one-way valve 19 and enters the second two-way pipe 223 of the liquid storage container 22. The medium-temperature liquid refrigerant outputted from the first two-way pipe 222 of the liquid storage container 22 passes through the first refrigerant flow regulating device 16 for throttling and cooling. After that, it becomes a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant interface 132 of the outdoor heat exchanger 13. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 13 and becomes a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the first refrigerant interface 131 of the outdoor heat exchanger 13 passes through the eighth valve port 242 and the ninth valve port 243 of the third reversing valve 24 and then passes through the gas-liquid separator 27 and returns to the inlet 111 of the compressor 11, and the cycle repeats. The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that hot water can be prepared while heating in winter, thereby improving energy utilization.

[0109] Specifically, Figure 6 and Figure 5 The difference between the shown embodiments is that Figure 6In the embodiment shown, an additional path is provided to enter the air-conditioning side heat exchanger 14 after passing through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the tenth valve port 244 of the third reversing valve 24, so that the amount of refrigerant entering the domestic hot water heat exchanger 12 can be better regulated, and the path of refrigerant coming out of the compressor 11 directly reaching the third reversing valve 24 can be guaranteed to be the gaseous refrigerant, while the refrigerant passing through the domestic hot water heat exchanger 12 may contain liquid refrigerant after heat exchange. The pure gaseous refrigerant can better ensure that the third reversing valve 24 has sufficient pressure difference for reversing, so that the pressure loss of the refrigerant pipeline is small, and the second reversing valve 23 is not easily affected by impurities, so that the system runs stably.

[0110] like Figure 7 As shown, in the pure hot water mode, the fourth valve port 231 of the second reversing valve 23 is connected with the fifth valve port 232, the first valve port 151 of the first reversing valve 15 is connected with the second valve port 152, the eighth valve port 242 of the third reversing valve 24 is connected with the ninth valve port 243, the first refrigerant flow regulating device 16 is opened, and the second refrigerant flow regulating device 18 is closed. That is, when only hot water needs to be prepared, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 first passes through the fourth valve port 231 and the fifth valve port 232 of the second reversing valve 23 and then enters the refrigerant inlet 121 of the domestic hot water heat exchanger 12. The high-temperature gaseous refrigerant exchanges heat with the water in the domestic water tank 20 in the domestic hot water heat exchanger 12 to prepare hot water. After preparing hot water, it becomes a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the refrigerant outlet 122 of the domestic hot water heat exchanger 12 passes through the first valve port 151 and the second valve port 152 of the first reversing valve 15 and then enters the liquid inlet of the liquid storage container 22. The medium-temperature liquid refrigerant outputted from the first two-way pipe 222 of the liquid storage container 22 is throttled and cooled by the first refrigerant flow regulating device 16 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant interface 132 of the outdoor heat exchanger 13. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 13 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant outputted from the first refrigerant interface 131 of the outdoor heat exchanger 13 passes through the eighth valve port 242 and the ninth valve port 243 of the third reversing valve 24 and then passes through the gas-liquid separator 27 and returns to the inlet 111 of the compressor 11, and circulates back and forth. The domestic hot water heat exchanger 12 is connected to the domestic water tank 20, so that all the heat from the compressor 11 can be used alone in the domestic hot water heat exchanger 12 for heat exchange with the water in the domestic water tank 20, and energy is used in a targeted manner. When making hot water, the refrigerant loop is shortened, and it does not need to pass through the air-conditioning side heat exchanger 14, and the heat exchange efficiency is higher.

[0111] like Figure 8 As shown, in the cooling mode, the fourth valve port 231 of the second reversing valve 23 is connected to the sixth valve port 233, the seventh valve port 241 of the third reversing valve 24 is connected to the eighth valve port 242, the tenth valve port 244 of the third reversing valve 24 is connected to the ninth valve port 243, the first refrigerant flow regulating device 16 is closed, and the second refrigerant flow regulating device 18 is opened. That is, when cooling is performed alone in summer, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 passes through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the eighth valve port 242 of the third reversing valve 24 and then enters the first refrigerant interface 131 of the outdoor heat exchanger 13. The high-temperature gaseous refrigerant condenses and releases heat in the outdoor heat exchanger 13 to become a medium-temperature liquid refrigerant. The medium-temperature liquid refrigerant output from the second refrigerant interface 132 of the outdoor heat exchanger 13 passes through the first one-way valve 17 and then enters the first two-way pipe 222 of the liquid storage container 22. The second two-way pipe 223 of the liquid storage container 22 The output medium-temperature liquid refrigerant is throttled and cooled by the second refrigerant flow regulating device 18 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14. The low-temperature liquid refrigerant exchanges heat with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14, and the low-temperature liquid refrigerant absorbs the heat of the circulating water and evaporates to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the third refrigerant interface 141 of the air-conditioning side heat exchanger 14 passes through the tenth valve port 244 and the ninth valve port 243 of the third reversing valve 24, and then returns to the inlet 111 of the compressor 11 through the gas-liquid separator 27, and circulates back and forth.

[0112] like Fig. 9As shown, in the heating mode, the fourth valve port 231 of the second reversing valve 23 is connected to the sixth valve port 233, the seventh valve port 241 of the third reversing valve 24 is connected to the tenth valve port 244, the eighth valve port 242 of the third reversing valve 24 is connected to the ninth valve port 243, the first refrigerant flow regulating device 16 is opened, and the second refrigerant flow regulating device 18 is closed. That is, when heating alone is used in winter, the high-temperature gaseous refrigerant output from the outlet 112 of the compressor 11 passes through the fourth valve port 231 and the sixth valve port 233 of the second reversing valve 23 and the seventh valve port 241 and the tenth valve port 244 of the third reversing valve 24 and then enters the third refrigerant interface 141 of the air-conditioning side heat exchanger 14. The high-temperature gaseous refrigerant is converted into medium-temperature liquid refrigerant after heat exchange with the circulating water in the terminal device 25 in the air-conditioning side heat exchanger 14. The medium-temperature liquid refrigerant output from the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 passes through the second one-way valve 19 and then enters the second double-way valve 19 of the liquid storage container 22. Toward pipe 223, the medium-temperature liquid refrigerant output by the first two-way pipe 222 of the liquid storage container 22 is throttled and cooled by the first refrigerant flow regulating device 16 to become a low-temperature liquid refrigerant with a lower temperature, and then enters the second refrigerant interface 132 of the outdoor heat exchanger 13. The low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchanger 13 to become a low-temperature gaseous refrigerant. The low-temperature gaseous refrigerant output by the first refrigerant interface 131 of the outdoor heat exchanger 13 passes through the eighth valve port 242 and the ninth valve port 243 of the third reversing valve 24, and then returns to the inlet 111 of the compressor 11 through the gas-liquid separator 27, and repeats the cycle.

[0113] It should be noted here that the above-mentioned high, medium and low temperatures are only relative expressions, and the gaseous refrigerant can also refer to a gas-liquid two-phase state or a gaseous state, which is not limited here.

[0114] In some other embodiments, the first one-way valve 17 and the second one-way valve 19 can be replaced by the first switch valve and the second switch valve. The second refrigerant interface 132 of the outdoor heat exchanger 13 is connected to the first two-way pipe 222 of the liquid storage container 22 through the first switch valve, and the second refrigerant interface 132 of the outdoor heat exchanger 13 is connected to the first two-way pipe 222 of the liquid storage container 22 through the first refrigerant flow regulating device 16; the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 is connected to the second two-way pipe 223 of the liquid storage container 22 through the second refrigerant flow regulating device 18, and the fourth refrigerant interface 142 of the air-conditioning side heat exchanger 14 is connected to the second two-way pipe 223 of the liquid storage container 22 through the second switch valve. For example, the first switch valve and the second switch valve are solenoid valves, and the solenoid valves here are only examples and are not intended to limit the present application.

[0115] Wherein, the switching states of the first switch valve and the second switch valve in different modes are:

[0116] In the above-mentioned refrigeration and full heat recovery domestic hot water mode, the first switch valve and the second switch valve are closed, and the refrigerant comes out of the compressor 11 and passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the second valve port 152, the bypass pipeline, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0117] In the above-mentioned refrigeration and waste heat recovery domestic hot water mode, the first switch valve is opened and the second switch valve is closed. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the third valve port 153, the first refrigerant interface 131, the second refrigerant interface 132, the first switch valve, the second refrigerant flow regulating device 18, the fourth refrigerant interface 142 and the third refrigerant interface 141 to form a refrigeration refrigerant circuit. At the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0118] In the above-mentioned heating plus domestic hot water mode, the first switch valve is closed and the second switch valve is opened. After the refrigerant comes out of the compressor 11, it passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the third valve port 153, the third refrigerant interface 141, the fourth refrigerant interface 142, the second switch valve, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a heating refrigerant circuit. At the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0119] In the above-mentioned pure hot water mode, the first switch valve and the second switch valve are closed, and the refrigerant comes out of the compressor 11 and passes through the refrigerant inlet 121, the refrigerant outlet 122, the first valve port 151, the second valve port 152, the bypass pipeline, the first refrigerant flow regulating device 16, the second refrigerant interface 132 and the first refrigerant interface 131 to form a pure hot water refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger 12.

[0120] By implementing the utility model, the following beneficial effects are achieved:

[0121] The utility model sets the first reversing valve 15 at the refrigerant outlet 122 end of the domestic hot water heat exchanger 12, thereby realizing automatic switching between full heat recovery and partial heat recovery during refrigeration, which can ensure both the heat recovery capacity and the temperature of the hot water after heat recovery.

[0122] Furthermore, the two sets of parallel refrigerant flow regulating devices and one-way valves can make the circuit in any mode pass through the refrigerant flow regulating device only once, thereby reducing resistance.

[0123] It can be understood that the above embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the utility model; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model, 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 utility model should fall within the scope of the claims of the utility model.

Claims

1. An air source heat pump system, characterized in that: include: A compressor, the compressor being used to compress the refrigerant; A domestic hot water heat exchanger, the domestic hot water heat exchanger comprising a refrigerant inlet and a refrigerant outlet connected to the refrigerant inlet; An outdoor heat exchanger, the outdoor heat exchanger comprising a first refrigerant interface and a second refrigerant interface connected to the first refrigerant interface; An air-conditioning side heat exchanger, the air-conditioning side heat exchanger comprising a third refrigerant interface and a fourth refrigerant interface connected to the third refrigerant interface; a first reversing valve, the first reversing valve being used to switch all or at least part of the heat of the refrigerant to be exchanged in the domestic hot water heat exchanger; A first throttling module, wherein the first throttling module comprises two paths, one path is provided with a first refrigerant flow regulating device, and the other path is provided with a first one-way valve; A second throttling module, wherein the second throttling module comprises two paths, one path is provided with a second refrigerant flow regulating device, and the other path is provided with a second one-way valve; and Bypass piping; Wherein, the refrigerant inlet is connected to the outlet of the compressor through a pipeline; The refrigerant outlet is connected to the inlet end of the bypass pipeline after passing through the first reversing valve, and the refrigerant outlet is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline after passing through the first reversing valve; The second refrigerant interface is connected to the first end of the first throttling module, the second end of the first throttling module is connected to the first end of the second throttling module through a pipeline, and the second end of the second throttling module is connected to the fourth refrigerant interface, wherein the conducting direction of the first one-way valve is toward the first end of the second throttling module, and the conducting direction of the second one-way valve is toward the second end of the first throttling module; The outlet end of the bypass pipeline is connected to the pipeline between the second end of the first throttling module and the first end of the second throttling module; The first refrigerant interface and / or the third refrigerant interface are connected to the inlet of the compressor through a pipeline.

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 inlet end of the bypass pipeline, and the third valve port is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline.

3. The air source heat pump system according to claim 2, characterized in that: When the first valve port is connected to the second valve port, and the second valve port is connected to the second refrigerant flow regulating device through the bypass 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 bypass pipeline, the second refrigerant flow regulating device, the fourth refrigerant interface and the third refrigerant interface to form a refrigeration refrigerant circuit, and all the heat of the refrigerant is exchanged in the domestic hot water heat exchanger; The first valve port is connected with the third valve port, and when the third valve port is connected with the first refrigerant interface 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 first refrigerant interface, the second refrigerant interface, the first one-way valve, the second refrigerant flow regulating device, the fourth refrigerant interface and the third refrigerant interface to form a refrigeration refrigerant circuit, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger.

4. The air source heat pump system according to claim 2, characterized in that: When the first valve port is connected to the third valve port, and the third valve port is connected to the third refrigerant interface 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 third refrigerant interface, the fourth refrigerant interface, the second one-way valve, the first refrigerant flow regulating device, the second refrigerant interface and the first refrigerant interface to form a heating refrigerant circuit, and at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger; When the first valve port is connected with the second valve port, and the second valve port is connected with the first refrigerant flow regulating device through the bypass 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 bypass pipeline, the first refrigerant flow regulating device, the second refrigerant interface and the first refrigerant interface to form a refrigerant circuit of pure hot water, and at the same time, at least part of the heat of the refrigerant is exchanged in the domestic hot water heat exchanger.

5. The air source heat pump system according to claim 1, characterized in that: The air source heat pump system further comprises: A liquid storage container, the outlet end of the bypass pipeline, the second end of the first throttling module and the first end of the second throttling module are connected to the liquid storage container.

6. The air source heat pump system according to claim 5, characterized in that: The liquid storage container comprises a liquid inlet pipe, a first two-way pipe and a second two-way pipe; The outlet end of the bypass pipeline is connected to the liquid inlet pipe, the first two-way pipe is connected to the second end of the first throttling module, and the second two-way pipe is connected to the first end of the second throttling module.

7. The air source heat pump system according to claim 6, characterized in that: The liquid inlet pipe leads to the upper part of the liquid storage container, and the first two-way pipe and the second two-way pipe lead to the bottom of the liquid storage container.

8. The air source heat pump system according to claim 1, characterized in that: The air source heat pump system further comprises: a second reversing valve, the second reversing valve comprising 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; the sixth valve port is connected to the first refrigerant interface and / or the third refrigerant interface through a pipeline; Wherein, when the fourth valve port is connected to the fifth valve port, the outlet of the compressor is connected to the refrigerant inlet; When the fourth valve port is connected to the sixth valve port, the outlet of the compressor is connected to the first refrigerant interface or the third refrigerant interface through a pipeline.

9. The air source heat pump system according to claim 1, 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 is connected to the first reversing valve; the eighth valve port is connected to the first refrigerant interface; the ninth valve port is connected to the inlet of the compressor; the tenth valve port is connected to the third refrigerant interface; Wherein, when the seventh valve port is connected to the eighth valve port, the first refrigerant interface is connected to the first reversing valve; When the seventh valve port is connected to the tenth valve port, the third refrigerant interface is connected to the first reversing valve; When the eighth valve port is connected to the ninth valve port, the first refrigerant interface is connected to the inlet of the compressor; When the tenth valve port is connected to the ninth valve port, the third refrigerant interface is connected to the inlet of the compressor.

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

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