Air conditioner heat pump system

Abstract

The utility model discloses a heat pump system of an air conditioner. The air conditioner heat pump system comprises a refrigerant circulation main loop, a first bypass branch and a control assembly. The refrigerant circulation main loop comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger. The first bypass branch comprises a heat storage device and a second throttling device; the control assembly comprises a first control valve, a second control valve, a first three-way valve and a third control valve. The air conditioner heat pump system comprises a heating mode, a refrigerating mode, a defrosting mode and a heating and defrosting mode, and the four-way valve, the second throttling device and the control assembly are controlled so that the air conditioner heat pump system can be switched between at least two of the heating mode, the refrigerating mode, the defrosting mode and the heating and defrosting mode. According to the air conditioner heat pump system, continuous heating can be achieved during defrosting, and the user experience can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, specifically, relate to a kind of air conditioning heat pump system. BACKGROUND

[0002] The existing air conditioning heat pump system is switched from heating mode to refrigeration mode when defrosting in winter, so that the indoor refrigeration mode affects the user experience in the room. SUMMARY

[0003] The main purpose of the utility model is to provide an air conditioning heat pump system, which can continuously heat during defrosting and improve user experience.

[0004] According to one aspect of the utility model, an air conditioning heat pump system is provided, comprising:

[0005] A refrigerant circulation main circuit includes a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device, and an indoor heat exchanger. The compressor includes an outlet and an inlet. The outdoor heat exchanger includes a first port and a second port. The first throttling device includes a third port and a fourth port. The indoor heat exchanger includes a fifth port and a sixth port. The four-way valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The outlet and the first valve port, the second valve port and the first port, the third valve port and the inlet, the fourth valve port and the sixth port, the second port and the third port, and the fourth port and the fifth port are connected by pipes.

[0006] It also includes a first bypass branch, which includes a heat storage device and a second throttling device. The heat storage device includes a seventh port and an eighth port. The seventh port and the sixth port, and the eighth port and the fourth valve port are connected by pipes. The second throttling device is connected to the pipe between the seventh port and the sixth port.

[0007] The control assembly comprises a first control valve, a second control valve, a first three-way valve and a third control valve, the first control valve is arranged on a pipeline between the fourth valve port and the sixth port, the second control valve is arranged on a pipeline between the second throttling device and the sixth port, the first three-way valve comprises a fifth valve port, a sixth valve port and a seventh valve port, the first three-way valve is arranged on a pipeline between the second port and the third port, and the fifth valve port is in communication with the second port, the sixth valve port is in communication with the third port, and the seventh valve port is connected on a pipeline between the second control valve and the second throttling device through a pipeline, the third control valve comprises an eighth valve port and a ninth valve port, the eighth valve port is connected on a pipeline between the outlet and the first valve port through a pipeline, and the ninth valve port is connected on a pipeline between the fourth port and the fifth port through a pipeline.

[0008] The air conditioner heat pump system comprises a heating mode, a cooling mode, a defrosting mode and a heating+defrosting mode, and the air conditioner heat pump system is switched between at least any two modes of the heating mode, the cooling mode, the defrosting mode and the heating+defrosting mode by controlling the four-way valve, the second throttling device and the control assembly.

[0009] Further, the second control valve is a three-way valve, the second control valve comprises a tenth valve port, an eleventh valve port and a twelfth valve port, the tenth valve port and the second throttling device are in communication through a pipeline, the eleventh valve port and the sixth port are in communication through a pipeline, and the twelfth valve port is connected on a pipeline between the fourth port and the fifth port through a pipeline.

[0010] And / or, the control assembly further comprises a fourth control valve, the fourth control valve comprises a thirteenth valve port and a fourteenth valve port, the thirteenth valve port is connected on a pipeline between the second throttling device and the heat storage device through a pipeline, and the fourteenth valve port is connected on a pipeline between the tenth valve port and the second throttling device through a pipeline.

[0011] The air conditioner heat pump system comprises a heating mode, a cooling mode, a defrosting mode and a heating+defrosting mode, and the air conditioner heat pump system is switched between at least any two modes of the heating mode, the cooling mode, the defrosting mode and the heating+defrosting mode by controlling the four-way valve, the second throttling device and the control assembly.

[0012] Further, the fourth control valve comprises a two-way valve or a one-way valve, when the fourth control valve is a one-way valve, the one-way valve is conducted in a direction from the heat storage device to the second control valve.

[0013] Further, the air conditioning heat pump system further comprises a hot water heat exchanger, the hot water heat exchanger comprises a ninth port and a tenth port;

[0014] The third control valve is a three-way valve, the third control valve further comprises a fifteenth valve port, the fifteenth valve port and the ninth port are communicated through a pipeline;

[0015] The control assembly further comprises a second three-way valve, the second three-way valve comprises a sixteenth valve port, a seventeenth valve port and an eighteenth valve port, the second three-way valve is arranged on the pipeline between the outlet and the first valve port, and the sixteenth valve port and the outlet, the seventeenth valve port and the first valve port, and the eighteenth valve port and the tenth port are communicated through pipelines;

[0016] The air conditioning heat pump system further comprises a refrigeration + partial heat recovery mode for producing domestic hot water mode, a heating + domestic hot water mode, a heat storage + domestic hot water mode, and a heating + domestic hot water + heat storage mode, by controlling the four-way valve, the second throttling device and the control assembly, the air conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating + defrosting mode, the heating + heat storage mode, the refrigeration + partial heat recovery mode for producing domestic hot water mode, the heating + domestic hot water mode, the heat storage + domestic hot water mode, and the heating + domestic hot water + heat storage mode.

[0017] Further, the control assembly further comprises a third three-way valve, the third three-way valve comprises a nineteenth valve port, a twentieth valve port and a twenty-first valve port, the third three-way valve is arranged on the pipeline between the twentieth valve port and the tenth port, and the twenty-first valve port and the tenth port, the nineteenth valve port and the eighteenth valve port, and the twentieth valve port and the third port are communicated through pipelines;

[0018] The air conditioning heat pump system further comprises a refrigeration + all heat recovery mode for producing domestic hot water mode, by controlling the four-way valve, the second throttling device and the control assembly, the air conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating + defrosting mode, the refrigeration + partial heat recovery mode for producing domestic hot water mode, the heating + domestic hot water mode, the heat storage + domestic hot water mode, the heating + domestic hot water + heat storage mode, and the refrigeration + all heat recovery mode for producing domestic hot water mode.

[0019] Further, the air conditioning heat pump system further comprises a third throttling device, the third throttling device comprises an eleventh port and a twelfth port, the eleventh port is connected on the pipeline in communication between the fifth valve port and the second port through the pipeline, the twelfth port is connected on the pipeline between the twentieth valve port and the third port through the pipeline;

[0020] The air conditioning heat pump system further comprises a hot water production mode, by controlling the four-way valve, the second throttling device and the control assembly, so that the air conditioning heat pump system switches between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating+defrosting mode, the heating+heat storage mode, the refrigeration+partial heat recovery hot water production mode, the heating+hot water production mode, the heat storage+hot water production mode, the heating+hot water production+heat storage mode, the refrigeration+all heat recovery hot water production mode and the hot water production mode.

[0021] In the utility model, since the first bypass branch, the second throttling device and the control assembly are arranged in the air conditioning heat pump system, when actually in use, by controlling the four-way valve, the second throttling device and the control assembly on the refrigerant circulation main loop, the air conditioning heat pump system can realize uninterrupted heating when defrosting, the comfort in the use process of the air conditioning heat pump system is improved, and the user experience is better. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.In the drawings,

[0023] Figure 1 Part of the connection relationship diagram of the air conditioning heat pump system disclosed in the embodiment of the application is shown in the drawings;

[0024] Figure 2 Another part of the connection relationship diagram of the structure of the air conditioning heat pump system disclosed in the embodiment of the application is shown in the drawings;

[0025] Figure 3 The third part of the connection relationship diagram of the structure of the air conditioning heat pump system disclosed in the embodiment of the application is shown in the drawings;

[0026] Figure 4 The fourth part of the connection relationship diagram of the structure of the air conditioning heat pump system disclosed in the embodiment of the application is shown in the drawings;

[0027] Figure 5 The connection relationship diagram of the overall structure of the air conditioning heat pump system disclosed in the embodiment of the application is shown in the drawings;

[0028] Figure 6Connection relationship diagram of the overall structure of another alternative of the air-conditioning heat pump system disclosed by the embodiments of the present application;

[0029] Figure 7 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating mode;

[0030] Figure 8 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating mode;

[0031] Figure 9 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating + defrosting mode;

[0032] Figure 10 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the defrosting mode;

[0033] Figure 11 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating + heat storage mode;

[0034] Figure 12 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the refrigeration + partial heat recovery for domestic hot water mode;

[0035] Figure 13 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating + domestic hot water mode;

[0036] Figure 14 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heat storage + domestic hot water mode;

[0037] Figure 15 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the heating + heat storage + domestic hot water mode;

[0038] Figure 16 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the refrigeration + all heat recovery for domestic hot water mode;

[0039] Figure 17 Flow direction diagram of the refrigerant when the air-conditioning heat pump system disclosed by the embodiments of the present application is in the domestic hot water mode.

[0040] Among them, the above-mentioned drawings include the following drawing marks:

[0041] 10 compressor; 11 inlet; 12 outlet; 20 four-way valve; 21 first valve port; 22 second valve port; 23 third valve port; 24 fourth valve port; 30 outdoor heat exchanger; 31 first port; 32 second port; 40 first throttling device; 41 third port; 42 fourth port; 50 indoor heat exchanger; 51 fifth port; 52 sixth port; 60 heat storage device; 61 seventh port; 62 eighth port; 70 second throttling device; 80 first control valve; 90 second control valve; 91 tenth valve port; 92 eleventh valve port; 93 twelfth valve port; 100 first three-way valve; 101 fifth valve port; 102 sixth valve port; 103 seventh valve port; 110 third control valve; 111 eighth valve port; 112 ninth valve port; 113 fifteenth valve port; 120 fourth control valve; 121 thirteenth valve port; 122 fourteenth valve port; 130 hot water heat exchanger; 131 ninth port; 132 tenth port; 140 second three-way valve; 141 sixteenth valve port; 142 seventeenth valve port; 143 eighteenth valve port; 150 third three-way valve; 153 nineteenth valve port; 151 twentieth valve port; 152 twenty-first valve port; 160 third throttling device; 161 eleventh port; 162 twelfth port. DETAILED DESCRIPTION

[0042] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples herein are not meant to limit the scope of the present application unless otherwise specifically stated. Also, it is to be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for ease of illustration. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail but should be considered part of the specification as appropriate. In all examples shown and discussed herein, any specific values are to be interpreted as merely exemplary and not limiting. Thus, other examples of exemplary embodiments can have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings, and that the use of or insertion of a reference number in one drawing does not preclude its use in another drawing.

[0045] As described in the background, the existing air conditioning heat pump system usually switches from heating mode to cooling mode when defrosting in winter, at this time, the indoor is in cooling mode, which will affect the user's experience in the room. Therefore, the present application provides a new type of heat pump air conditioning system, which can continue heating when defrosting, and can improve the use comfort of the air conditioning system. The air conditioning heat pump system of the present application will be described in detail below with reference to the accompanying drawings.

[0046] Referring to Figure 1 and Figure 6 According to an embodiment of the present application, an air conditioning heat pump system is provided. The air conditioning heat pump system includes a refrigerant circulation main circuit, a first bypass branch, and a control assembly.

[0047] As shown in Figure 1 , the refrigerant circulation main circuit includes a compressor 10, a four-way valve 20, an outdoor heat exchanger 30, a first throttling device 40, and an indoor heat exchanger 50. The compressor 10 includes an outlet 12 and an inlet 11. The outdoor heat exchanger 30 includes a first port 31 and a second port 32. The first throttling device 40 includes a third port 41 and a fourth port 42. The indoor heat exchanger 50 includes a fifth port 51 and a sixth port 52. The four-way valve 20 includes a first valve port 21, a second valve port 22, a third valve port 23, and a fourth valve port 24. The outlet 12 and the first valve port 21, the second valve port 22 and the first port 31, the third valve port 23 and the inlet 11, the fourth valve port 24 and the sixth port 52, the second port 32 and the third port 41, and the fourth port 42 and the fifth port 51 are all connected by pipes. The first throttling device 40 includes a throttling element such as a throttling expansion valve or a capillary tube.

[0048] The first bypass branch includes a heat storage device 60 and a second throttling device 70. The heat storage device 60 includes a seventh port 61 and an eighth port 62. The seventh port 61 is in communication with the sixth port 52 through a pipeline, and the eighth port 62 is in communication with the fourth valve port 24 through a pipeline. The second throttling device 70 is connected to the pipeline between the seventh port 61 and the sixth port 52. The second throttling device 70 includes a throttling element such as a throttling expansion valve or a capillary tube. The heat storage device 60 can be a phase change heat storage plate or a phase change heat storage capsule. The phase change heat storage plate is made by encapsulating a phase change material in a plate-shaped container. During heating of the air conditioning and heat pump system, the phase change material absorbs heat and changes phase (e.g., from solid to liquid) to store heat. When heat is needed, the phase change material changes from liquid to solid to release heat. The phase change latent heat can be effectively used for heat storage and heat release, and a large amount of heat can be stored in a small volume. The phase change heat storage capsule is a structure in which a phase change material is wrapped in a small capsule, and then the capsule is filled in a specific container or pipeline for use. The phase change heat storage capsule can be flexibly arranged in the air conditioning system as needed, which can improve the heat storage density and stability of the system, and is suitable for some air conditioning and heat pump systems that have high space requirements and need to accurately control the temperature.

[0049] The control assembly includes a first control valve 80, a second control valve 90, a first three-way valve 100, and a third control valve 110. The first control valve 80 is arranged on the pipeline between the fourth valve port 24 and the sixth port 52. The second control valve 90 is arranged on the pipeline between the second throttling device 70 and the sixth port 52. The first three-way valve 100 includes a fifth valve port 101, a sixth valve port 102, and a seventh valve port 103. The first three-way valve 100 is arranged on the pipeline between the second port 32 and the third port 41. The fifth valve port 101 is in communication with the second port 32. The sixth valve port 102 is in communication with the third port 41. The seventh valve port 103 is connected to the pipeline between the second control valve 90 and the second throttling device 70 through a pipeline. The third control valve 110 includes an eighth valve port 111 and a ninth valve port 112. The eighth valve port 111 is connected to the pipeline between the outlet 12 and the first valve port 21 through a pipeline. The ninth valve port 112 is connected to the pipeline between the fourth port 42 and the fifth port 51 through a pipeline. The first control valve 80 is used to control the opening and closing of the pipeline between the fourth valve port 24 and the sixth port 52. The second control valve 90 is used to control the opening and closing of the pipeline between the second throttling device 70 and the sixth port 52. The first three-way valve 100 is used to control the opening and closing of the pipeline between the second port 32 and the third port 41, and the pipeline between the second port 32 and the second control valve 90 and the second throttling device 70.

[0050] The air-conditioning heat pump system in the embodiment includes a heating mode, a cooling mode, a defrosting mode, and a heating+defrosting mode. The air-conditioning heat pump system is switched between at least any two modes of the heating mode, the cooling mode, the defrosting mode, and the heating+defrosting mode by controlling the four-way valve 20, the second throttling device 70, and the control assembly.

[0051] Specifically, as shown in Figure 1 When it is needed to switch the air-conditioning heat pump system to the cooling mode, only the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be conducted, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be conducted, the third valve port 23 and the fourth valve port 24 are controlled to be conducted, and the other valves in the air-conditioning heat pump system are controlled to be all closed. As shown in Figure 7 The high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 is condensed and released heat in the outdoor heat exchanger 30 to become liquid refrigerant at medium temperature and medium pressure. The liquid refrigerant is throttled and expanded by the first throttling device 40 to become liquid refrigerant or gas-liquid mixed state at low temperature and low pressure. Then, the liquid refrigerant enters the indoor heat exchanger 50. The refrigerant absorbs heat and evaporates in the indoor heat exchanger 50 to become gaseous refrigerant at low temperature and low pressure. The gaseous refrigerant further flows through the first control valve 80 and then returns to the compressor 10 from the inlet 11 of the compressor 10. The air-conditioning heat pump system completes the cycle of the cooling mode.

[0052] Specifically, as shown in Figure 1 When it is needed to switch the air-conditioning heat pump system to the heating mode, only the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be conducted, the first valve port 21 and the fourth valve port 24 of the four-way valve 20 are controlled to be conducted, the second valve port 22 and the third valve port 23 are controlled to be conducted, and the other valves in the air-conditioning heat pump system are controlled to be all closed. As shown in Figure 8 The high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the indoor heat exchanger 50 from the first control valve 80 to be condensed and released heat to become liquid refrigerant at medium temperature and medium pressure. The liquid refrigerant is throttled and expanded by the first throttling device 40 to become liquid refrigerant or gas-liquid mixed state at low temperature and low pressure. The refrigerant further enters the outdoor heat exchanger 30. The refrigerant absorbs heat and evaporates in the outdoor heat exchanger 30 to become gaseous refrigerant at low temperature and low pressure. Then, the gaseous refrigerant returns to the compressor 10 from the inlet 11 of the compressor 10. The air-conditioning heat pump system completes the cycle of the heating mode.

[0053] Specifically, as shown in Figure 1As shown, when it is needed to switch the air-conditioning heat pump system to the heating + defrosting mode, only the first control valve 80 needs to be controlled to be closed, the fifth valve port 101 and the seventh valve port 103 of the first three-way valve 100 are controlled to be open, the second control valve 90 and the third control valve 110 are controlled to be open, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, and the other valves in the air-conditioning heat pump system are controlled to be closed. Referring to Figure 9 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 is divided into two paths and flows through the third control valve 110 and the four-way valve 20 respectively. Among them, the refrigerant flowing into the third control valve 110 enters the indoor heat exchanger 50 to condense and release heat to heat, and then the refrigerant flows into the second throttling device 70 to throttle and expand to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat to become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10; the refrigerant flowing into the four-way valve 20 enters the outdoor heat exchanger 30 to condense and release heat to defrost, and most of the refrigerant flowing through the outdoor heat exchanger 30 becomes medium-temperature and medium-pressure liquid refrigerant, and then enters the second throttling device 70 to throttle and expand to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat to become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10. At this time, the entire air-conditioning heat pump system completes the heating + defrosting mode cycle.

[0054] In combination with Figure 1 As shown, when it is needed to switch the air-conditioning heat pump system to the heating + defrosting mode, only the first control valve 80 needs to be controlled to be closed, the fifth valve port 101 and the seventh valve port 103 of the first three-way valve 100 are controlled to be open, the second control valve 90 and the third control valve 110 are controlled to be open, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, and the other valves in the air-conditioning heat pump system are controlled to be closed. Referring to Figure 10 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 is divided into two paths and flows through the third control valve 110 and the four-way valve 20 respectively. Among them, the refrigerant flowing into the third control valve 110 enters the indoor heat exchanger 50 to condense and release heat to heat, and then the refrigerant flows into the second throttling device 70 to throttle and expand to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat to become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10; the refrigerant flowing into the four-way valve 20 enters the outdoor heat exchanger 30 to condense and release heat to defrost, and most of the refrigerant flowing through the outdoor heat exchanger 30 becomes medium-temperature and medium-pressure liquid refrigerant, and then enters the second throttling device 70 to throttle and expand to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat to become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10. At this time, the entire air-conditioning heat pump system completes the heating + defrosting mode cycle.

[0055] It can be seen that, due to the first bypass branch, the second throttling device 70 and the control assembly in the air-conditioning heat pump system in the embodiment, in actual use, by controlling the four-way valve 20, the second throttling device 70 and the control assembly on the refrigerant circulation main loop, the air-conditioning heat pump system can realize uninterrupted heating during defrosting, can improve the comfort during use of the air-conditioning heat pump system, and can be arbitrarily switched between multiple working modes, and the user experience is better.

[0056] Further, the first control valve 80 in the embodiment is a two-way valve or other form of on-off valve. The second control valve 90 is a three-way valve, which includes a tenth valve port 91, an eleventh valve port 92 and a twelfth valve port 93. The tenth valve port 91 and the second throttling device 70 are connected by a pipeline, and the eleventh valve port 92 and the sixth port 52 are connected by a pipeline. The twelfth valve port 93 is connected by a pipeline between the fourth port 42 and the fifth port 51.

[0057] Optionally, the control assembly in the embodiment further includes a fourth control valve 120, which includes a thirteenth valve port 121 and a fourteenth valve port 122. The thirteenth valve port 121 is connected by a pipeline between the second throttling device 70 and the heat storage device 60. The fourteenth valve port 122 is connected by a pipeline between the tenth valve port 91 and the second throttling device 70.

[0058] The air-conditioning heat pump system in the embodiment includes a heating + heat storage mode. In actual use, by controlling the four-way valve 20, the second throttling device 70 and the control assembly, the air-conditioning heat pump system can be switched between at least any two modes of the heating mode, the cooling mode, the defrosting mode, the heating + defrosting mode and the heating + heat storage mode. It should be noted that the second throttling device 70 in the embodiment can be a throttling device with adjustable flow opening. When the air-conditioning heat pump system is in the heating + heat storage mode, the second throttling device 70 can be in the full opening mode. At this time, the second throttling device 70 does not have a throttling effect. Of course, the fourth control valve 120 can be controlled, and the opening and closing state of the second throttling device 70 does not need to be controlled so that the air-conditioning heat pump system can circulate in the heating + heat storage mode. The second throttling device 70 can also be a throttling device with an unadjustable flow opening. In the heating + heat storage mode, the second throttling device 70 is closed and does not have a throttling effect. The refrigerant passes through the fourth control valve 120.

[0059] Specifically, in combination with Figure 2As shown, when it is required to switch the air-conditioning heat pump system to the heating + heat storage mode, only need to control the first control valve 80 to open, control the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 to be in conduction, control the tenth valve port 91 and the twelfth valve port 93 of the second control valve 90 to be in conduction, control the fourth control valve 120 to open and / or control the second throttling device 70 to be fully open, so that the first valve port 21 and the fourth valve port 24 of the four-way valve 20 are in conduction, the second valve port 22 and the third valve port 23 are in conduction, and control all other valves in the air-conditioning heat pump system to be closed. In combination Figure 11 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the indoor heat exchanger 50 and the heat storage device 60 in two paths respectively. Among them, the gaseous refrigerant entering the indoor heat exchanger 50 releases heat to heat, becomes medium-temperature and medium-pressure liquid refrigerant, and then flows into the first throttling device 40 to expand and become low-temperature and low-pressure liquid or gas-liquid mixed refrigerant, and then enters the outdoor heat exchanger 30 to absorb heat to become low-temperature and low-pressure gaseous refrigerant and then flows back to the compressor 10; The refrigerant entering the heat storage device 60 releases heat in the heat storage device 60 and is stored in the heat storage device 60, and then becomes medium-temperature and medium-pressure liquid refrigerant, further flows into the first throttling device 40 to expand and become low-temperature and low-pressure liquid or gas-liquid mixed refrigerant, and then enters the outdoor heat exchanger 30 to absorb heat to become low-temperature and low-pressure gaseous refrigerant and then flows back to the compressor 10. At this time, the entire air-conditioning heat pump system completes the heating + heat storage mode cycle.

[0060] In combination Figure 2 And Figure 6 As shown, the fourth control valve 120 in the embodiment can be provided as a two-way valve or a one-way valve. Among them, when the fourth control valve 120 is provided as a one-way valve, the one-way valve is in conduction in the direction from the heat storage device 60 to the second control valve 90. In the present application, by providing the fourth control valve 120 as a one-way valve, the production manufacturing cost of the air-conditioning heat pump system can be reduced. Compared with the structure of providing the fourth control valve 120 as a two-way valve, the way of providing the fourth control valve 120 as a one-way valve can simplify the control logic of the air-conditioning heat pump system when designing the control logic of the air-conditioning heat pump system. In some control modes of the air-conditioning heat pump system (for example, the heating + heat storage mode), there is no need to consider the opening and closing timing of the fourth control valve 120.

[0061] Referring to Figure 3 As shown, the air-conditioning heat pump system in the embodiment further includes a hot water heat exchanger 130, and the hot water heat exchanger 130 includes a ninth port 131 and a tenth port 132. The third control valve 110 is a three-way valve, and the third control valve 110 further includes a fifteenth valve port 113. Among them, the fifteenth valve port 113 and the ninth port 131 are in communication through a pipeline.

[0062] Further, the control assembly further comprises a second three-way valve 140, which comprises a sixteenth valve port 141, a seventeenth valve port 142 and an eighteenth valve port 143. The second three-way valve 140 is arranged on the pipeline between the outlet 12 and the first valve port 21, and the sixteenth valve port 141 is in communication with the outlet 12, the seventeenth valve port 142 is in communication with the first valve port 21, and the eighteenth valve port 143 is in communication with the tenth port 132 through the pipeline.

[0063] In the embodiment, the air-conditioning heat pump system further comprises a refrigeration + partial heat recovery mode for producing domestic hot water mode, a heating + domestic hot water mode, a heat storage + domestic hot water mode, and a heating + domestic hot water + heat storage mode. When in use, the air-conditioning heat pump system can be switched between at least any two of the heating mode, the refrigeration mode, the defrosting mode, the heating + defrosting mode, the heating + heat storage mode, the refrigeration + partial heat recovery mode for producing domestic hot water mode, the heating + domestic hot water mode, the heat storage + domestic hot water mode, and the heating + domestic hot water + heat storage mode by controlling the four-way valve 20, the second throttling device 70 and the control assembly.

[0064] Referring to Figure 3 As shown in FIG. 6, when it is required to switch the air-conditioning heat pump system to the refrigeration + partial heat recovery mode for producing domestic hot water mode, the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be in conduction, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 are controlled to be in conduction, the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 are controlled to be in conduction, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be in conduction, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be in conduction, and the other valves of the air-conditioning heat pump system are controlled to be closed. Figure 12 As shown in FIG. 6, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, and then enters the outdoor heat exchanger 30 through the four-way valve 20 to become medium-temperature and medium-pressure liquid refrigerant, and then the medium-temperature and medium-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gaseous-liquid mixed state through the first throttling device 40, and then enters the indoor heat exchanger 50 to absorb heat and evaporate to refrigerate, and then becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20. At this time, the entire air-conditioning heat pump system completes the refrigeration + partial heat recovery mode for producing domestic hot water mode cycle. Wherein, the partial heat recovery here refers to that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 does not change phase in the hot water heat exchanger 130, and does not release latent heat of phase change.

[0065] Referring to Figure 3As shown, when it is needed to switch the air conditioning heat pump system to the heating + domestic hot water mode, only need to control the first control valve 80 to open, control the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 to be communicated, control the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 to be communicated, control the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 to be communicated, control the first valve port 21 and the fourth valve port 24 of the four-way valve 20 to be communicated, the second valve port 22 and the third valve port 23 to be communicated, at the same time, control all the other valves of the air conditioning heat pump system to be closed. As shown in Figure 13 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, then enters the indoor heat exchanger 50 through the four-way valve 20 to become medium-temperature and medium-pressure liquid refrigerant, the medium-temperature and medium-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, then enters the outdoor heat exchanger 30, then becomes low-temperature and low-pressure gaseous refrigerant, finally flows into the compressor 10 through the four-way valve 20, completing the cycle of the heating + domestic hot water mode of the air conditioning heat pump system.

[0066] As shown in Figure 3 As shown, when it is needed to switch the air conditioning heat pump system to the heating + domestic hot water mode, only need to control the first control valve 80 to open, control the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 to be communicated, control the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 to be communicated, control the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 to be communicated, control the tenth valve port 91 and the twelfth valve port 93 of the second control valve 90 to be communicated, control the fourth control valve 120 to open and / or control the second throttling device 70 to be fully open, control the first valve port 21 and the fourth valve port 24 of the four-way valve 20 to be communicated, the second valve port 22 and the third valve port 23 to be communicated, at the same time, control all the other valves of the air conditioning heat pump system to be closed. As shown in Figure 14 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, then enters the indoor heat exchanger 50 through the four-way valve 20 to become medium-temperature and medium-pressure liquid refrigerant, the medium-temperature and medium-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, then enters the outdoor heat exchanger 30, then becomes low-temperature and low-pressure gaseous refrigerant, finally flows into the compressor 10 through the four-way valve 20, completing the cycle of the heating + domestic hot water mode of the air conditioning heat pump system.

[0067] Referring to Figure 3 As shown, when it is required to switch the air conditioning heat pump system to the heating + domestic hot water production + heat storage mode, only the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be communicated, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 are controlled to be communicated, the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 are controlled to be communicated, the tenth valve port 91 and the twelfth valve port 93 of the second control valve 90 are controlled to be communicated, the fourth control valve 120 is controlled to be communicated, the second throttling device 70 is controlled to be fully opened, the first valve port 21 and the fourth valve port 24 of the four-way valve 20 are controlled to be communicated, the second valve port 22 and the third valve port 23 of the four-way valve 20 are controlled to be communicated, and other valves of the air conditioning heat pump system are controlled to be closed at the same time. As shown in Figure 15 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, and then is divided into two paths through the four-way valve 20 to enter the heat storage device 60 and the indoor heat exchanger 50. Among them, the refrigerant entering the heat storage device 60 releases heat and stores the heat in the heat storage device 60, and the refrigerant becomes low-temperature and low-pressure liquid refrigerant after passing through the heat storage device 60, and the low-temperature and low-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, and then enters the outdoor heat exchanger 30, and then becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20; the refrigerant entering the indoor heat exchanger 50 is condensed and releases heat to heat, and then becomes medium-temperature and medium-pressure liquid refrigerant, and the liquid refrigerant further enters the first throttling device 40 to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and becomes low-temperature and low-pressure gaseous refrigerant through the outdoor heat exchanger 30 to return to the compressor 10, completing the cycle of the heating + domestic hot water production + heat storage mode of the air conditioning heat pump system.

[0068] Referring to Figure 4 As shown, the control assembly in the embodiment further includes a third three-way valve 150, the third three-way valve 150 includes a nineteenth valve port 153, a twentieth valve port 151, and a twenty-first valve port 152, the third three-way valve 150 is arranged on the pipeline between the twentieth valve port 151 and the tenth port 132, and the twentieth valve port 151 and the tenth port 132, the nineteenth valve port 153 and the eighteenth valve port 143, and the twentieth valve port 151 and the third port 41 are all communicated through the pipeline.

[0069] The air conditioning heat pump system in this embodiment also includes a cooling + full heat recovery for domestic hot water production mode. In use, the air conditioning heat pump system can be switched between at least two modes, including heating mode, cooling mode, defrosting mode, heating + defrosting mode, cooling + partial heat recovery for domestic hot water production mode, heating + domestic hot water production mode, heat storage + domestic hot water production mode, heating + domestic hot water production + heat storage mode, and cooling + full heat recovery for domestic hot water production mode, by controlling the four-way valve 20, the second throttling device 70, and the control components.

[0070] See Figure 4 As shown, when it is necessary to switch the air conditioning heat pump system to a cooling + total heat recovery domestic hot water mode, it is only necessary to control the first control valve 80 to open, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 to conduct, the twenty-first valve port 152 and the twentieth valve port 151 of the third three-way valve 150 to conduct, and the third valve port 23 and the fourth valve port 24 of the four-way valve 20 to conduct, while simultaneously controlling all other valves of the air conditioning heat pump system to close. Figure 16 As shown, the high-temperature, high-pressure gaseous refrigerant discharged from outlet 12 of compressor 10 enters the hot water heat exchanger 130 through the third control valve 110. The high-temperature, high-pressure gaseous refrigerant condenses and releases heat, heating the water in the hot water heat exchanger 130 into a medium-temperature, medium-pressure liquid refrigerant. Then, it expands through the first throttling device 40 into a low-temperature, low-pressure liquid refrigerant or a gas-liquid mixture. It then enters the indoor heat exchanger 50 to absorb heat and evaporate for cooling, becoming a low-temperature, low-pressure gaseous refrigerant. Finally, it flows back into compressor 10 through four-way valve 20, completing the cycle of the air conditioning heat pump system's cooling + total heat recovery for domestic hot water production mode. In this embodiment, total heat recovery means that the high-temperature, high-pressure gaseous refrigerant discharged from compressor 10 undergoes a phase change in the hot water heat exchanger 130, releasing latent heat of phase change, and all the heat of the refrigerant is recovered in the hot water heat exchanger 130.

[0071] See Figure 5 As shown, the air conditioning heat pump system in this embodiment also includes a third throttling device 160, which includes an eleventh port 161 and a twelfth port 162. The eleventh port 161 is connected to the pipe between the fifth valve port 101 and the second port 32 via a pipe, and the twelfth port 162 is connected to the pipe between the twentieth valve port 151 and the third port 41 via a pipe.

[0072] The air conditioner heat pump system in the embodiment further comprises a hot water production mode. When in use, the air conditioner heat pump system can be switched between at least any two of the heating mode, the cooling mode, the defrosting mode, the heating + defrosting mode, the heating + heat storage mode, the cooling + partial heat recovery hot water production mode, the heating + hot water production mode, the heat storage + hot water production mode, the heating + hot water production + heat storage mode, the cooling + full heat recovery hot water production mode and the hot water production mode by controlling the four-way valve 20, the second throttling device 70 and the control assembly.

[0073] Referring to Figure 5 When it is required to switch the air conditioner heat pump system to the hot water production mode, the eighth valve port 111 of the third control valve 110 is controlled to be communicated with the fifteenth valve port 113, the twenty-first valve port 152 of the third four-way valve 150 is controlled to be communicated with the twentieth valve port 151, the third valve port 23 of the four-way valve 20 is controlled to be communicated with the second valve port 22, and the other valves of the air conditioner heat pump system are controlled to be closed, as shown in FIG. 13. Figure 17 As shown in FIG. 13, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure liquid refrigerant, and then is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gaseous-liquid mixed state through the third throttling device 160, and then is heated and evaporated into low-temperature and low-pressure gaseous refrigerant in the outdoor heat exchanger 30, and finally flows into the compressor 10 through the four-way valve 20, and finally completes the cycle of the hot water production mode of the air conditioner heat pump system.

[0074] On the other hand, referring to Figures 1 to 17 The application further provides a control method of the air conditioner heat pump system, which is used for controlling the air conditioner heat pump system.

[0075] Specifically, the air conditioner heat pump system in the embodiment has the cooling mode, the heating mode, the heating + defrosting mode, the defrosting mode, the heating + heat storage mode, the cooling + partial heat recovery hot water production mode, the heating + hot water production mode, the heat storage + hot water production mode, the heating + hot water production + heat storage mode, the cooling + full heat recovery hot water production mode and the hot water production mode.

[0076] In actual use, the air conditioner heat pump system can be switched between at least any two of the cooling mode, the heating mode, the heating + defrosting mode, the defrosting mode, the heating + heat storage mode, the cooling + partial heat recovery hot water production mode, the heating + hot water production mode, the heat storage + hot water production mode, the heating + hot water production + heat storage mode, the cooling + full heat recovery hot water production mode and the hot water production mode by controlling the four-way valve 20, the second throttling device 70 and the control assembly.

[0077] Referring to Figure 7 As shown in FIG. 6, when it is required to switch the air-conditioning heat pump system to the cooling mode, only the sixteenth valve port 141 and the seventeenth valve port 142 of the second three-way valve 140 are controlled to be open, the first control valve 80 is controlled to be open, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be open, and the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 are controlled to be open, and the other valves in the air-conditioning heat pump system are controlled to be closed, so that the refrigerant in the air-conditioning heat pump system flows along the first circulation loop. The refrigerant flow path in the first circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the outdoor heat exchanger 30, the first throttling device 40, the indoor heat exchanger 50, and the inlet 11 of the compressor 10 in sequence. Figure 7 As shown in FIG. 7, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 is condensed and released heat in the outdoor heat exchanger 30 to become medium-temperature and medium-pressure liquid refrigerant, which is throttled and expanded by the first throttling device 40 to become low-temperature and low-pressure liquid refrigerant or gaseous-liquid mixed state. Then, the refrigerant enters the indoor heat exchanger 50, absorbs heat and evaporates in the indoor heat exchanger 50 to become low-temperature and low-pressure gaseous refrigerant, which further flows through the first control valve 80 and then returns to the compressor 10 from the inlet 11 of the compressor 10. The whole air-conditioning heat pump system completes the circulation in the cooling mode.

[0078] Referring to Figure 8 As shown in FIG. 8, when it is required to switch the air-conditioning heat pump system to the heating mode, only the sixteenth valve port 141 and the seventeenth valve port 142 of the second three-way valve 140 are controlled to be open, the first control valve 80 is controlled to be open, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be open, the first valve port 21 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, the second valve port 22 and the third valve port 23 are controlled to be open, and the other valves in the air-conditioning heat pump system are controlled to be closed, so that the refrigerant in the air-conditioning heat pump system flows along the second circulation loop. The refrigerant flow path in the second circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the indoor heat exchanger 50, the first throttling device 40, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10 in sequence. Figure 8 As shown in FIG. 9, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the indoor heat exchanger 50 from the first control valve 80 to be condensed and released heat to become medium-temperature and medium-pressure liquid refrigerant, which is throttled and expanded by the first throttling device 40 to become low-temperature and low-pressure liquid refrigerant or gaseous-liquid mixed state. Then, the refrigerant further enters the outdoor heat exchanger 30, absorbs heat and evaporates in the outdoor heat exchanger 30 to become low-temperature and low-pressure gaseous refrigerant, which then returns to the compressor 10 from the inlet 11 of the compressor 10. The whole air-conditioning heat pump system completes the circulation in the heating mode.

[0079] Referring to Figure 9As shown, when it is needed to switch the air conditioning heat pump system to the heating + defrosting mode, only the sixteenth valve port 141 and the seventeenth valve port 142 of the second three-way valve 140 are controlled to be open, the eighth valve port 111 and the ninth valve port 112 of the third control valve 110 are controlled to be open, the fifth valve port 101 and the seventh valve port 103 of the first three-way valve 100 are controlled to be open, the tenth valve port 91 and the eleventh valve port 92 of the second control valve 90 are controlled to be open, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, and the other valves in the air conditioning heat pump system are all controlled to be closed, so that the refrigerant in the air conditioning heat pump system flows along the third circulation loop and the fourth circulation loop at the same time. The refrigerant flow path in the third circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the outdoor heat exchanger 30, the second throttling device 70, the heat storage device 60, and the inlet 11 of the compressor 10 in sequence, and the refrigerant flow path in the fourth circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the indoor heat exchanger 50, the second throttling device 70, the heat storage device 60, and the inlet 11 of the compressor 10 in sequence. Figure 9 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 is divided into two paths and flows through the third control valve 110 and the four-way valve 20 respectively. The refrigerant flowing into the third control valve 110 enters the indoor heat exchanger 50 to condense and release heat to heat, and then the refrigerant flows into the second throttling device 70 to expand and become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat, and becomes low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10; the refrigerant flowing into the four-way valve 20 enters the outdoor heat exchanger 30 to condense and release heat to defrost, and most of the refrigerant flowing through the outdoor heat exchanger 30 becomes medium-temperature and medium-pressure liquid refrigerant, and then enters the second throttling device 70 to expand and become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to evaporate and absorb heat, and becomes low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10. At this time, the whole air conditioning heat pump system completes the circulation of the heating + defrosting mode.

[0080] Referring to Figure 10As shown, when it is needed to switch the air conditioning heat pump system to the defrosting mode, only the sixteenth valve port 141 and the seventeenth valve port 142 of the second three-way valve 140 are controlled to be open, the fifth valve port 101 and the seventh valve port 103 of the first three-way valve 100 are controlled to be open, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, and the other valves in the air conditioning heat pump system are controlled to be closed, so that the refrigerant in the air conditioning heat pump system flows along the third circulation loop. The refrigerant flow path in the third circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the outdoor heat exchanger 30, the second throttling device 70, the heat storage device 60, and the inlet 11 of the compressor 10 in sequence. As shown in Figure 10 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the outdoor heat exchanger 30 from the four-way valve 20, is condensed and releases heat to defrost, and is mostly changed into medium-temperature and medium-pressure liquid refrigerant after flowing through the outdoor heat exchanger 30, and then enters the second throttling device 70 to be throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and further enters the heat storage device 60 to be evaporated and absorb heat, and is changed into low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10 from the inlet 11 of the compressor 10. At this time, the whole air conditioning heat pump system completes the circulation in the defrosting mode.

[0081] As shown in Figure 11 As shown, when it is needed to switch the air conditioning heat pump system to the defrosting mode, only the sixteenth valve port 141 and the seventeenth valve port 142 of the second three-way valve 140 are controlled to be open, the fifth valve port 101 and the seventh valve port 103 of the first three-way valve 100 are controlled to be open, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be open, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be open, and the other valves in the air conditioning heat pump system are controlled to be closed, so that the refrigerant in the air conditioning heat pump system flows along the third circulation loop. The refrigerant flow path in the third circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the outdoor heat exchanger 30, the second throttling device 70, the heat storage device 60, and the inlet 11 of the compressor 10 in sequence. As shown in Figure 11As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the indoor heat exchanger 50 and the heat storage device 60 in two paths. The gaseous refrigerant entering the indoor heat exchanger 50 releases heat to generate heat, and becomes medium-temperature and medium-pressure liquid refrigerant, and then flows into the first throttling device 40 to be throttled and expanded into low-temperature and low-pressure liquid or gaseous refrigerant, and then enters the outdoor heat exchanger 30 to absorb heat and become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10. The refrigerant entering the heat storage device 60 releases heat in the heat storage device 60 and is stored in the heat storage device 60, and then becomes medium-temperature and medium-pressure liquid refrigerant, and further flows into the first throttling device 40 to be throttled and expanded into low-temperature and low-pressure liquid or gaseous refrigerant, and then enters the outdoor heat exchanger 30 to absorb heat and become low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 10. At this time, the entire air-conditioning heat pump system completes the cycle of the heating + heat storage mode.

[0082] Referring to Figure 12 As shown, when it is necessary to switch the air-conditioning heat pump system to the refrigeration + partial heat recovery heating domestic water mode, only the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be communicated, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 are controlled to be communicated, the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 are controlled to be communicated, the twenty-first valve port 152 and the nineteenth valve port 153 of the third three-way valve 150 are controlled to be communicated, the first valve port 21 and the second valve port 22 of the four-way valve 20 are controlled to be communicated, the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are controlled to be communicated, and the other valves of the air-conditioning heat pump system are controlled to be closed, so that the refrigerant of the air-conditioning heat pump system flows along the seventh circulation loop. The flow path of the refrigerant in the seventh circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the outdoor heat exchanger 30, the first throttling device 40, the indoor heat exchanger 50, and the inlet 11 of the compressor 10 in sequence. As shown in the figure, Figure 12 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, and then enters the outdoor heat exchanger 30 through the four-way valve 20 to become medium-temperature and medium-pressure liquid refrigerant, and then the medium-temperature and medium-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gaseous refrigerant through the first throttling device 40, and then enters the indoor heat exchanger 50 to absorb heat and evaporate to generate refrigeration, and then becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20. At this time, the entire air-conditioning heat pump system completes the cycle of the refrigeration + partial heat recovery heating domestic water mode.

[0083] Referring to Figure 13As shown, when it is needed to switch the air conditioning heat pump system to the heating + domestic hot water mode, only need to control the first control valve 80 to open, control the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 to be communicated, control the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 to be communicated, control the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 to be communicated, control the nineteenth valve port 153 and the twenty-first valve port 152 of the third three-way valve 150 to be communicated, control the first valve port 21 and the fourth valve port 24 of the four-way valve 20 to be communicated, the second valve port 22 and the third valve port 23 to be communicated, and control all other valves of the air conditioning heat pump system to be closed, so that the refrigerant of the air conditioning heat pump system flows along the sixth circulation loop. Among them, the flow path of the refrigerant in the sixth circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the indoor heat exchanger 50, the first throttling device 40, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10 in sequence. As shown in the figure, Figure 13 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant. After that, it enters the indoor heat exchanger 50 through the four-way valve 20 to become medium-temperature and medium-pressure liquid refrigerant, and the medium-temperature and medium-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40. After that, it enters the outdoor heat exchanger 30 to absorb heat and evaporate, and then becomes low-temperature and low-pressure gaseous refrigerant. Finally, it flows into the compressor 10 through the four-way valve 20, completing the circulation of the heating + domestic hot water mode of the air conditioning heat pump system.

[0084] As shown in the figure, Figure 14 As shown, when it is needed to switch the air conditioning heat pump system to the heating + domestic hot water mode, only need to control the first control valve 80 to open, control the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 to be communicated, control the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 to be communicated, control the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 to be communicated, control the nineteenth valve port 153 and the twenty-first valve port 152 of the third three-way valve 150 to be communicated, control the tenth valve port 91 and the twelfth valve port 93 of the second control valve 90 to be communicated, control the fourth control valve 120 to be communicated and / or control the second throttling device 70 to be fully opened, control the first valve port 21 and the fourth valve port 24 of the four-way valve 20 to be communicated, the second valve port 22 and the third valve port 23 to be communicated, so that the refrigerant of the air conditioning heat pump system flows along the eighth circulation loop. Among them, the flow path of the refrigerant in the eighth circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the heat storage device 60, the first throttling device 40, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10 in sequence. As shown in the figure, Figure 14As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, and then passes through the four-way valve 20 to enter the heat storage device 60 to release heat and store the heat in the heat storage device 60, the refrigerant becomes low-temperature and low-pressure liquid refrigerant after passing through the heat storage device 60, the low-temperature and low-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, and then enters the outdoor heat exchanger 30, and then becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20, completing the cycle of the heat storage + domestic hot water production mode of the air conditioning heat pump system.

[0085] Referring to Figure 15 As shown, when it is needed to switch the air conditioning heat pump system to the heating + domestic hot water production + heat storage mode, only the first control valve 80 is controlled to be opened, the fifth valve port 101 and the sixth valve port 102 of the first three-way valve 100 are controlled to be communicated, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 are controlled to be communicated, the seventeenth valve port 142 and the eighteenth valve port 143 of the second three-way valve 140 are controlled to be communicated, the nineteenth valve port 153 and the twenty-first valve port 152 of the third three-way valve 150 are controlled to be communicated, the tenth valve port 91 and the twelfth valve port 93 of the second control valve 90 are controlled to be communicated, the fourth control valve 120 is controlled to be communicated and / or the second throttling device 70 is controlled to be fully opened, the first valve port 21 and the fourth valve port 24 of the four-way valve 20 are controlled to be communicated, the second valve port 22 and the third valve port 23 of the four-way valve 20 are controlled to be communicated, and at the same time, the other valves of the air conditioning heat pump system are all controlled to be closed, so that the refrigerant of the air conditioning heat pump system flows in the eighth circulation loop and the ninth circulation loop at the same time. The flow path of the refrigerant in the eighth circulation loop is that the refrigerant sequentially flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the heat storage device 60, the first throttling device 40, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10, and the flow path of the refrigerant in the ninth circulation loop is that the refrigerant sequentially flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the indoor heat exchanger 50, the first throttling device 40, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10. As shown in Figure 15As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure gaseous refrigerant, and then is divided into two paths through the four-way valve 20 to enter the heat storage device 60 and the indoor heat exchanger 50. Among them, the refrigerant entering the heat storage device 60 releases heat and stores the heat in the heat storage device 60, and the refrigerant becomes low-temperature and low-pressure liquid refrigerant after passing through the heat storage device 60, and the low-temperature and low-pressure liquid refrigerant is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, and then enters the outdoor heat exchanger 30, and then becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20; the refrigerant entering the indoor heat exchanger 50 is condensed and releases heat to heat, and then becomes medium-temperature and medium-pressure liquid refrigerant, and the liquid refrigerant further enters the first throttling device 40 to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state, and becomes low-temperature and low-pressure gaseous refrigerant through the outdoor heat exchanger 30 to flow back to the compressor 10, completing the circulation of the heating + domestic hot water + heat storage mode of the air conditioning heat pump system.

[0086] Referring to Figure 16 As shown, when it is needed to switch the air conditioning heat pump system to the refrigeration + all heat recovery domestic hot water mode, only the first control valve 80 is controlled to be opened, the eighth valve port 111 and the fifteenth valve port 113 of the third control valve 110 are communicated, the twenty-first valve port 152 and the twentieth valve port 151 of the third three-way valve 150 are communicated, and the third valve port 23 and the fourth valve port 24 of the four-way valve 20 are communicated, so that the refrigerant of the air conditioning heat pump system flows along the tenth circulation loop, wherein the flow path of the refrigerant in the tenth circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the first throttling device 40, the indoor heat exchanger 50, and the inlet 11 of the compressor 10 in sequence. As shown, Figure 16 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure liquid refrigerant, and then is throttled and expanded into low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the first throttling device 40, and then enters the indoor heat exchanger 50 to absorb heat and evaporate to refrigerate, becomes low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20, completing the circulation of the refrigeration + all heat recovery domestic hot water mode of the air conditioning heat pump system.

[0087] Referring to Figure 17As shown, when it is needed to switch the air-conditioning heat pump system to the hot water production mode, only the eighth valve port 111 of the third control valve 110 and the fifteenth valve port 113 are controlled to be communicated, the twentieth valve port 151 and the twenty-first valve port 152 of the third three-way valve 150 are controlled to be communicated, the second valve port 22 and the third valve port 23 of the four-way valve 20 are controlled to be communicated, and the other valves of the air-conditioning heat pump system are controlled to be closed, so that the refrigerant of the air-conditioning heat pump system flows along the eleventh circulation loop, wherein the flow path of the refrigerant in the eleventh circulation loop is that the refrigerant flows through the outlet 12 of the compressor 10, the hot water heat exchanger 130, the third throttling device 160, the outdoor heat exchanger 30, and the inlet 11 of the compressor 10 in sequence. Figure 17 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the outlet 12 of the compressor 10 enters the hot water heat exchanger 130 through the third control valve 110, and the high-temperature and high-pressure gaseous refrigerant is condensed and releases heat to heat the water in the hot water heat exchanger 130 to become medium-temperature and medium-pressure liquid refrigerant, and then expands to become low-temperature and low-pressure liquid refrigerant or gas-liquid mixed state through the third throttling device 160, and then enters the outdoor heat exchanger 30 to absorb heat and evaporate to become low-temperature and low-pressure gaseous refrigerant, and finally flows into the compressor 10 through the four-way valve 20, and finally flows into the compressor 10 through the four-way valve 20, to complete the circulation of the hot water production mode of the air-conditioning heat pump system.

[0088] According to the above-mentioned embodiments, the air-conditioning heat pump system of the present application has at least the following technical effects:

[0089] (1) The provision of the heat storage device in the present application enables the heat storage device to store heat while heating (or producing hot water), and enables the refrigerant to be heated by the heat storage device when the system is defrosting, so as to defrost and simultaneously realize indoor heating, realizing uninterrupted heating during defrosting, thereby improving the user experience.

[0090] (2) The air-conditioning heat pump system of the present application can realize free switching of 11 modes, and the system is more flexible.

[0091] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms used herein are for ease of description only and do not limit the protective scope of the present application.

[0092] In addition, it should be noted that the use of "first", "second", and the like words to qualify parts, only for the convenience of the corresponding parts are distinguished, such as no other declaration, the above words have no special meaning, therefore can not be understood as the limitation of the protective scope of the present application.

[0093] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protective scope of the present application.

Claims

1. An air-conditioning and heat pump system comprising: a refrigerant circulation main circuit including a compressor (10) having an outlet (12) and an inlet (11), an outdoor heat exchanger (30) having a first port (31) and a second port (32), a first throttling device (40) having a third port (41) and a fourth port (42), and an indoor heat exchanger (50) having a fifth port (51) and a sixth port (52), and a four-way valve (20) having a first valve port (21), a second valve port (22), a third valve port (23), and a fourth valve port (24), the outlet (12) and the first valve port (21), the second valve port (22) and the first port (31), the third valve port (23) and the inlet (11), the fourth valve port (24) and the sixth port (52), the second port (32) and the third port (41), and the fourth port (42) and the fifth port (51) being communicated by pipes; characterized by further comprising: a first bypass branch including a heat storage device (60) having a seventh port (61) and an eighth port (62), the seventh port (61) and the sixth port (52), and the eighth port (62) and the fourth valve port (24) being communicated by pipes, and a second throttling device (70) connected to the pipe between the seventh port (61) and the sixth port (52). The control assembly comprises a first control valve (80), a second control valve (90), a first three-way valve (100) and a third control valve (110), the first control valve (80) is arranged on a pipeline between the fourth valve port (24) and the sixth port (52), the second control valve (90) is arranged on a pipeline between the second throttling device (70) and the sixth port (52), the first three-way valve (100) comprises a fifth valve port (101), a sixth valve port (102) and a seventh valve port (103), the first three-way valve (100) is arranged on a pipeline between the second port (32) and the third port (41), the fifth valve port (101) is communicated with the second port (32), the sixth valve port (102) is communicated with the third port (41), the seventh valve port (103) is connected by a pipeline on a pipeline between the second control valve (90) and the second throttling device (70), the third control valve (110) comprises an eighth valve port (111) and a ninth valve port (112), the eighth valve port (111) is connected by a pipeline on a pipeline between the outlet (12) and the first valve port (21), the ninth valve port (112) is connected by a pipeline on a pipeline between the fourth port (42) and the fifth port (51); The air conditioning heat pump system comprises a heating mode, a cooling mode, a defrosting mode and a heating+defrosting mode, and the air conditioning heat pump system is switched between at least any two modes of the heating mode, the cooling mode, the defrosting mode and the heating+defrosting mode by controlling the four-way valve (20), the second throttling device (70) and the control assembly.

2. The air conditioning and heat pump system of claim 1, wherein, The second control valve (90) is a three-way valve, the second control valve (90) comprises a tenth valve port (91), an eleventh valve port (92) and a twelfth valve port (93), the tenth valve port (91) and the second throttling device (70) are communicated by a pipeline, the eleventh valve port (92) and the sixth port (52) are communicated by a pipeline, and the twelfth valve port (93) is connected by a pipeline on a pipeline between the fourth port (42) and the fifth port (51); And / or, the control assembly further comprises a fourth control valve (120), the fourth control valve (120) comprises a thirteenth valve port (121) and a fourteenth valve port (122), the thirteenth valve port (121) is connected by a pipeline on a pipeline between the second throttling device (70) and the heat storage device (60), and the fourteenth valve port (122) is connected by a pipeline on a pipeline between the tenth valve port (91) and the second throttling device (70). The air-conditioning heat pump system comprises a heating+heat storage mode, and the air-conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating+defrosting mode and the heating+heat storage mode by controlling the four-way valve (20), the second throttling device (70) and the control assembly.

3. The air conditioning and heat pump system of claim 2, wherein, The fourth control valve (120) comprises a two-way valve or a one-way valve, and when the fourth control valve (120) is a one-way valve, the one-way valve is conducted in the direction from the heat storage device (60) to the second control valve (90).

4. The air conditioning and heat pump system according to any one of claims 1 to 3, characterized in that, The air-conditioning heat pump system further comprises a hot water heat exchanger (130), and the hot water heat exchanger (130) comprises a ninth port (131) and a tenth port (132); The third control valve (110) is a three-way valve, and the third control valve (110) further comprises a fifteenth valve port (113) which is communicated with the ninth port (131) through a pipeline; The control assembly further comprises a second three-way valve (140), and the second three-way valve (140) comprises a sixteenth valve port (141), a seventeenth valve port (142) and an eighteenth valve port (143). The second three-way valve (140) is arranged on a pipeline between the outlet (12) and the first valve port (21), and the sixteenth valve port (141), the seventeenth valve port (142) and the eighteenth valve port (143) are communicated with the outlet (12), the first valve port (21) and the tenth port (132) through pipelines, respectively. The air-conditioning heat pump system further comprises a refrigeration+partial heat recovery mode for producing domestic hot water, a heating+domestic hot water mode, a heat storage+domestic hot water mode and a heating+domestic hot water+heat storage mode, and the air-conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating+defrosting mode, the heating+heat storage mode, the refrigeration+partial heat recovery mode for producing domestic hot water, the heating+domestic hot water mode, the heat storage+domestic hot water mode and the heating+domestic hot water+heat storage mode by controlling the four-way valve (20), the second throttling device (70) and the control assembly.

5. The air conditioning and heat pump system of claim 4, wherein, The control assembly further comprises a third three-way valve (150), and the third three-way valve (150) comprises a nineteenth valve port (153), a twentieth valve port (151) and a twenty-first valve port (152). The third three-way valve (150) is arranged on a pipeline between the twentieth valve port (151) and the tenth port (132), and the twentieth valve port (151), the nineteenth valve port (153) and the twenty-first valve port (152) are communicated with the tenth port (132), the eighteenth valve port (143) and the third port (41) through pipelines, respectively. The air conditioning heat pump system further comprises a refrigeration + all-heat recovery domestic hot water mode, and the air conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating + defrosting mode, the refrigeration + partial-heat recovery domestic hot water mode, the heating + domestic hot water mode, the heat storage + domestic hot water mode, the heating + domestic hot water + heat storage mode, the refrigeration + all-heat recovery domestic hot water mode and the domestic hot water mode by controlling the four-way valve (20), the second throttling device (70) and the control assembly.

6. The air conditioning and heat pump system of claim 5, wherein, The air conditioning heat pump system further comprises a third throttling device (160), the third throttling device (160) comprises an eleventh port (161) and a twelfth port (162), the eleventh port (161) is communicated by a pipeline between the fifth valve port (101) and the second port (32), and the twelfth port (162) is connected by a pipeline between the twentieth valve port (151) and the third port (41); The air conditioning heat pump system further comprises a domestic hot water mode, and the air conditioning heat pump system is switched between at least any two modes of the heating mode, the refrigeration mode, the defrosting mode, the heating + defrosting mode, the heating + heat storage mode, the refrigeration + partial-heat recovery domestic hot water mode, the heating + domestic hot water mode, the heat storage + domestic hot water mode, the heating + domestic hot water + heat storage mode, the refrigeration + all-heat recovery domestic hot water mode and the domestic hot water mode by controlling the four-way valve (20), the second throttling device (70) and the control assembly.

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