Air conditioning heat pump system

Abstract

The utility model discloses a kind of air conditioner heat pump systems. Among them, air conditioner heat pump system includes refrigerant circulation main circuit, throttling mechanism and control component. Among them, refrigerant circulation main circuit includes compressor, heat exchange device, outdoor heat exchanger and indoor heat exchanger;Throttling mechanism is set on refrigerant circulation main circuit, throttling mechanism is throttled to refrigerant;Control component is used to control air conditioner heat pump system is in defrosting mode, forms to utilize the heat released by heat exchange device and defrosts outdoor heat exchanger.This application's air conditioner heat pump system can not be switched to refrigeration mode when defrosting indoor, can improve the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioning heat pump system. Background Technology

[0002] During winter heating, due to the low outdoor temperature, frost often forms on the surface of the outdoor heat exchanger (i.e., the finned heat exchanger) of the heat pump system, affecting heat exchange efficiency and the unit's heating capacity. When the frost accumulates to a certain level, it can even trigger the unit to alarm and shut down. Therefore, when the frost on the unit reaches a certain amount, defrosting is necessary.

[0003] In existing technologies, the outdoor unit switches from heating mode to cooling mode during defrosting in winter. At this time, the indoor terminal equipment will briefly switch to cooling mode, which affects the user experience. Utility Model Content

[0004] The main purpose of this utility model is to provide an air conditioning heat pump system that can prevent the indoor unit from switching to cooling mode during defrosting, thereby improving the user experience.

[0005] According to one aspect of the present invention, an air conditioning heat pump system is provided, comprising:

[0006] The refrigerant circulation main circuit includes a compressor, a heat exchange device, an outdoor heat exchanger, and an indoor heat exchanger. The compressor includes an exhaust port and a return port. The heat exchange device includes a first port and a second port. The outdoor heat exchanger includes a third port and a fourth port. The indoor heat exchanger includes a fifth port and a sixth port. The exhaust port is connected to the third port, the fourth port is connected to the fifth port, and the sixth port is connected to the return port via a pipe. The first port is connected to the pipe between the fourth port and the fifth port via a pipe. The second port is connected to the return port via a pipe.

[0007] The air conditioning heat pump system also includes a throttling mechanism, which is installed on the refrigerant circulation main circuit and is used to throttle the refrigerant.

[0008] The air conditioning heat pump system also includes a control component, which is used to form a circulation path for defrosting the outdoor heat exchanger by utilizing the heat released by the heat exchange device when the air conditioning heat pump system is in defrosting mode.

[0009] Furthermore, the air conditioning heat pump system also includes a first commutation mechanism.

[0010] The exhaust port is connected to the third port and / or the sixth port through the first reversing mechanism;

[0011] The return air port is connected to the third port and / or the sixth port through the first reversing mechanism;

[0012] The air conditioning heat pump system further includes a cooling mode, a heating mode, and a defrosting mode. By controlling the control component and the first reversing mechanism, the air conditioning heat pump system can switch between at least two of the cooling mode, the heating mode, and the defrosting mode.

[0013] Furthermore, the heat pump system also includes a second commutation mechanism;

[0014] The exhaust port is connected to the second port via a pipe through the second reversing mechanism;

[0015] The second reversing mechanism is connected to the first reversing mechanism via a pipeline;

[0016] The exhaust port is connected to the third port sequentially via the second reversing mechanism and the first reversing mechanism; and / or

[0017] The exhaust port is connected to the sixth port in sequence through the second reversing mechanism and the first reversing mechanism;

[0018] The air conditioning heat pump system further includes a cooling + total heat recovery mode and a domestic hot water production mode. By controlling the control component, the first reversing mechanism and the second reversing mechanism, the air conditioning heat pump system can switch between at least two of the cooling mode, the heating mode, the defrosting mode, the cooling + total heat recovery mode and the domestic hot water production mode.

[0019] Furthermore, the air conditioning heat pump system also includes a first control valve;

[0020] The first control valve includes a first connection port and a second connection port, wherein the first connection port is connected to the first port via a pipe;

[0021] The second connection port is connected to the pipe between the second reversing mechanism and the first reversing mechanism via a pipe;

[0022] The air conditioning heat pump system also includes a cooling + partial heat recovery mode and a heating + domestic hot water mode. By controlling the control component, the first reversing mechanism and the second reversing mechanism, the air conditioning heat pump system can switch between at least two of the following modes: cooling mode, heating mode, defrosting mode, cooling + total heat recovery mode, domestic hot water mode, cooling + partial heat recovery mode and heating + domestic hot water mode.

[0023] Furthermore, the control components include a second control valve and a third control valve;

[0024] The second control valve includes a first valve port and a second valve port;

[0025] The third control valve includes a third valve port and a fourth valve port;

[0026] The first valve port is connected to the fourth port and / or the fifth port through the throttling mechanism;

[0027] The second valve port is connected to the pipe between the first port and the first connection port via a pipe;

[0028] The fourth valve port is connected to the return air port via a pipe;

[0029] The third valve port is connected to the pipe between the second reversing mechanism and the second port via a pipe.

[0030] Furthermore, the throttling structure includes a first throttling device and a second throttling device;

[0031] The first throttling device includes a seventh port and an eighth port;

[0032] The second throttling device includes a ninth port and a tenth port;

[0033] The seventh port and the fourth port, the eighth port and the ninth port, and the tenth port and the fifth port are all connected by pipes;

[0034] The first valve port is connected to the pipe between the eighth port and the ninth port via a pipe.

[0035] Furthermore, the first reversing mechanism includes a four-way valve;

[0036] The four-way valve includes a fifth valve port, a sixth valve port, a seventh valve port, and an eighth valve port; the fifth valve port is connected to the exhaust port, the sixth valve port is connected to the third port, the seventh valve port is connected to the sixth port, and the eighth valve port is connected to the return port via pipes;

[0037] When the air conditioning heat pump system switches to the defrost mode, the fifth valve port and the sixth valve port are connected; or,

[0038] When the air conditioning heat pump system switches to the cooling mode or the cooling + partial heat recovery mode, the fifth valve port is connected to the sixth valve port, and the eighth valve port is connected to the seventh valve port; or,

[0039] When the air conditioning heat pump system switches to the heating mode or the heating + domestic hot water mode, the fifth valve port is connected to the seventh valve port, and the eighth valve port is connected to the sixth valve port; or,

[0040] When the air conditioning heat pump system switches to the domestic hot water production mode, the sixth valve port and the eighth valve port are connected; or,

[0041] When the air conditioning heat pump system switches to the cooling + total heat recovery mode, the seventh valve port and the eighth valve port are connected.

[0042] Furthermore, a one-way valve is provided on the pipeline between the eighth valve port and the return air port, and the one-way valve is open in the direction from the eighth valve port to the return air port.

[0043] Furthermore, the compressor also includes an air inlet;

[0044] The air conditioning heat pump system also includes an economizer and a third throttling device;

[0045] The economizer includes port 11, port 12, port 13, and port 14;

[0046] The third throttling device includes a fifteenth port and a sixteenth port;

[0047] The eleventh port is connected to the eighth port, the thirteenth port to the air supply port, and the fourteenth port to the ninth port via pipes; the fifteenth port is connected to the pipe between the eighth and eleventh ports via a pipe; and the sixteenth port is connected to the twelfth port via a pipe; and / or,

[0048] The air conditioning heat pump system also includes a liquid storage device, which includes a seventeenth port and an eighteenth port. The seventeenth port is connected to the tenth port, and the eighteenth port is connected to the fifth port through pipes.

[0049] Furthermore, the air conditioning heat pump system also includes a hot water tank, which has an inlet and an outlet, and the heat exchange device has an inlet and an outlet. The outlet and the inlet, as well as the outlet and the inlet, are connected by pipes.

[0050] In this invention, since a throttling mechanism and control components are installed on the refrigerant circulation main circuit of the air conditioning heat pump system, in actual use, by controlling the control components on the refrigerant circulation main circuit, the indoor unit of the air conditioning heat pump system will not switch to cooling mode during defrosting in winter, which can improve the user experience. Attached Figure Description

[0051] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0052] Figure 1 This is a schematic diagram of the overall structure of the air conditioning heat pump system disclosed in the embodiments of this application;

[0053] Figure 2 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system in defrost mode as disclosed in the embodiments of this application;

[0054] Figure 3 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system in cooling mode as disclosed in the embodiments of this application;

[0055] Figure 4 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system in heating mode as disclosed in the embodiments of this application;

[0056] Figure 5 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system disclosed in this application when it is in the domestic hot water production mode;

[0057] Figure 6 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system disclosed in the embodiment of this application in the cooling + total heat recovery mode;

[0058] Figure 7 This is a schematic diagram of the refrigerant flow in the air conditioning heat pump system disclosed in the embodiments of this application when it is in the cooling + partial heat recovery mode;

[0059] Figure 8 This is a schematic diagram of the refrigerant flow direction of the air conditioning heat pump system disclosed in this application in the heating + domestic hot water mode;

[0060] Figure 9 This is a schematic diagram of the refrigerant flow direction in the pressure relief branch of the air conditioning heat pump system disclosed in the embodiments of this application.

[0061] The above figures include the following reference numerals:

[0062] 10. Compressor; 11. Exhaust port; 12. Return port; 13. Make-up port; 20. Heat exchanger; 21. First port; 22. Second port; 23. Water inlet; 24. Water outlet; 30. Outdoor heat exchanger; 31. Third port; 32. Fourth port; 40. Indoor heat exchanger; 41. Fifth port; 42. Sixth port; 51. Second reversing mechanism; 52. First throttling device; 521. Seventh port; 522. Eighth port; 53. Second throttling device; 531. Ninth port; 532. Tenth port; 54. Second control valve; 541. First valve port; 542. Second valve port; 55. Third control valve; 551. Third valve port; 552. Fourth valve port; 60. Economizer; 61. Eleventh port; 62. Twelfth port; 63. Thirteenth port; 64. Fourteenth port; 70. Third throttling device; 71, Fifteenth port; 72, Sixteenth port; 80, Liquid storage device; 81, Seventeenth port; 82, Eighteenth port; 90, First reversing mechanism; 91, Fifth valve port; 92, Sixth valve port; 93, Seventh valve port; 94, Eighth valve port; 100, First control valve; 101, First connection port; 102, Second connection port; 110, Gas separation device; 111, Nineteenth port; 112, Twentieth port; 120, Fourth control valve; 121, Ninth valve port; 122, Tenth valve port; 130, Fourth throttling device; 131, Twenty-first port; 132, Twenty-second port; 140, Hot water tank; 141, Liquid inlet; 142, Liquid outlet; 150, Pump body; 160, Temperature sensor; 170, First filter; 171, Second filter; 180, Check valve. Detailed Implementation

[0063] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0066] As described in the background section, during winter heating, due to the low outdoor ambient temperature, frost often forms on the surface of the outdoor heat exchanger (i.e., the finned heat exchanger) of the heat pump system, affecting heat exchange efficiency and the unit's heating capacity. When the frost accumulates to a certain level, it can also cause the unit to alarm and shut down. Therefore, when the frost on the unit reaches a certain amount, defrosting is required. However, in existing technologies, during defrosting in winter, the main unit switches from heating mode to cooling mode first, causing the indoor temperature to briefly adjust to cooling, thus affecting the user experience. To address this, this application provides a novel heat pump air conditioning system that prevents the indoor temperature from switching to cooling mode during defrosting, thereby improving the user experience. The following will provide a detailed description of the air conditioning heat pump system of this application with reference to the accompanying drawings.

[0067] See Figure 1 As shown, according to an embodiment of this application, an air conditioning heat pump system is provided. The air conditioning heat pump system includes a refrigerant circulation main loop, a throttling mechanism, and control components.

[0068] like Figure 1 As shown, the refrigerant circulation main circuit includes a compressor 10, a heat exchange device 20, an outdoor heat exchanger 30, and an indoor heat exchanger 40. The compressor 10 includes an exhaust port 11 and a return port 12. The heat exchange device 20 includes a first port 21 and a second port 22. The outdoor heat exchanger 30 includes a third port 31 and a fourth port 32. The indoor heat exchanger 40 includes a fifth port 41 and a sixth port 42. The exhaust port 11 is connected to the third port 31, the fourth port 32 is connected to the fifth port 41, and the sixth port 42 is connected to the return port 12 via pipes. The first port 21 is connected to the pipe between the fourth port 32 and the fifth port 41 via a pipe, and the second port 22 is connected to the return port 12 via a pipe.

[0069] The throttling mechanism is located on the main refrigerant circulation loop and is used to throttle the refrigerant; the control component is used to form a circulation path for defrosting the outdoor heat exchanger 30 by utilizing the heat released by the heat exchange device 20 when the air conditioning heat pump system is in defrosting mode.

[0070] Specifically, in the refrigerant circulation main loop, the flow rate and direction of the refrigerant are controlled by the throttling mechanism and control components. This ensures that the high-temperature refrigerant flows from the compressor 10 to the outdoor heat exchanger 30, then through the heat exchange device 20, and back to the compressor 10. The heat exchange device 20 is installed in the refrigerant circulation main loop. After the refrigerant flows from the compressor 10 to the outdoor heat exchanger 30 for defrosting, it exchanges heat with hot water in the heat exchange device 20, acquiring a certain amount of heat. This heat can be effectively utilized when defrosting the outdoor heat exchanger 30 is required. In this embodiment, the high-temperature refrigerant flowing through the outdoor heat exchanger 30 increases its temperature, causing the frost layer to melt rapidly, ensuring the heat exchange efficiency of the outdoor heat exchanger 30, and preventing severe frost buildup from affecting the performance of the entire system. Furthermore, defrosting the outdoor heat exchanger 30 does not affect the operation of the indoor heat exchanger 40, providing users with a comfortable indoor environment. At the same time, it reduces system downtime or performance fluctuations caused by defrosting and other issues, thus improving the user experience.

[0071] like Figure 1 As shown, the air conditioning heat pump system also includes a first reversing mechanism 90. The exhaust port 11 is connected to either the third port 31 or the sixth port 42 via the first reversing mechanism 90; the return port 12 is also connected to either the third port 31 or the sixth port 42 via the first reversing mechanism 90. Exemplarily, in this application, the first reversing mechanism 90 is a four-way valve. The air conditioning heat pump system can realize cooling mode, heating mode, and defrosting mode. By controlling the control components and the first reversing mechanism 90, the air conditioning heat pump system can switch between at least two of these modes. Through the synergistic effect of the first reversing mechanism 90 and the control components, this application enables the air conditioning heat pump system to efficiently switch between cooling mode, heating mode, and defrosting mode, improving functional flexibility and ensuring operational stability while also considering energy saving and economy.

[0072] Combination Figure 1As shown, the air conditioning heat pump system also includes a second reversing mechanism 51. The exhaust port 11 is connected to the second port 22 via a pipe through the second reversing mechanism 51, and the first reversing mechanism 90 is connected to the second reversing mechanism 51 via a pipe. The exhaust port 11 is connected to the third port 31 sequentially through the second reversing mechanism 51 and the first reversing mechanism 90; the exhaust port 11 can also be connected to the sixth port 42 sequentially through the second reversing mechanism 51 and the first reversing mechanism 90. Optionally, the second reversing mechanism 51 can be a three-way valve, a four-way valve, etc. In this embodiment, only two directions of reversal are required; preferably, the second reversing mechanism 51 is a three-way valve.

[0073] Furthermore, the air conditioning heat pump system can also realize a cooling + total heat recovery mode and a domestic hot water production mode. By controlling the control components, the first commutation mechanism 90 and the second commutation mechanism 51, the air conditioning heat pump system can switch between at least two modes: cooling mode, heating mode, defrosting mode, cooling + total heat recovery mode and domestic hot water production mode.

[0074] This application, by setting a second reversing mechanism 51, can flexibly control the refrigerant flow. When defrosting the outdoor heat exchanger 30 is required, the exhaust port 11 is connected to the third port 31 through the second reversing mechanism 51 and the first reversing mechanism 90, allowing the high-temperature, high-pressure refrigerant to exchange heat at the outdoor heat exchanger 30 to achieve defrosting. When the air conditioning heat pump system needs to switch to cooling mode + total heat recovery mode, cooling + partial heat recovery mode, heating + domestic hot water mode, or pure domestic hot water mode, the exhaust port 11 is connected to the second port 22 through the second reversing mechanism 51, allowing the high-temperature, high-pressure refrigerant to first enter the heat exchange device 20. After absorbing heat in the heat exchange device 20, the refrigerant flows to the outdoor heat exchanger 30 or the indoor heat exchanger 40 through the first reversing mechanism 90 or the control component, thereby achieving switching between the above modes. In this application, setting a second reversing mechanism 51 improves the heat recovery efficiency of the air conditioning heat pump system, further improving the system's energy utilization rate. In addition, the second reversing mechanism 51 enhances the adaptability and versatility of the air conditioning heat pump system. For example, by adjusting the state of the second reversing mechanism 51, the refrigerant circulation path can be optimized, allowing the air conditioning heat pump system to flexibly switch between modes such as cooling, heating, heat recovery, and defrosting.

[0075] Combination Figure 1 As shown, the air conditioning heat pump system also includes a first control valve 100. The first control valve 100 includes a first connection port 101 and a second connection port 102. The first connection port 101 is connected to the first port 21 via a pipe; the second connection port 102 is connected to the second reversing mechanism 51 and the pipe between the second and first reversing mechanisms 90 via pipes. In this application, the first control valve 100 is a solenoid valve. By controlling the opening / closing of the first control valve 100, the refrigerant flow direction is controlled, enabling switching between different modes.

[0076] Specifically, the air conditioning heat pump system can also realize a cooling + partial heat recovery mode and a heating + domestic hot water mode. By controlling the control components, the first commutation mechanism 90 and the second commutation mechanism 51, the air conditioning heat pump system can switch between at least two modes: cooling mode, heating mode, defrosting mode, cooling + full heat recovery mode, domestic hot water mode, cooling + partial heat recovery mode and heating + domestic hot water mode.

[0077] Furthermore, the control components include a second control valve 54 and a third control valve 55. The second control valve 54 includes a first valve port 541 and a second valve port 542; the third control valve 55 includes a third valve port 551 and a fourth valve port 552. The first valve port 541 is connected to the fourth port 32 and / or the fifth port 41 via a throttling mechanism; the second valve port 542 is connected to the pipe between the first port 21 and the first connection port 101 via a pipe; the fourth valve port 552 is connected to the return air port 12 via a pipe; and the third valve port 551 is connected to the pipe between the second reversing mechanism 51 and the second port 22 via a pipe. Exemplarily, both the second control valve 54 and the third control valve 55 can be solenoid valves. Solenoid valves respond quickly and precisely control the flow of refrigerant via electrical signals, and are also easy to automate, improving the stability and reliability of the system operation.

[0078] Furthermore, the throttling mechanism includes a first throttling device 52 and a second throttling device 53. The first throttling device 52 includes a seventh port 521 and an eighth port 522, and the second throttling device 53 includes a ninth port 531 and a tenth port 532. The seventh port 521 and the fourth port 32, the eighth port 522 and the ninth port 531, and the tenth port 532 and the fifth port 41 are all connected by pipes. Additionally, in this embodiment, the first valve port 541 is connected to the pipe between the eighth port 522 and the ninth port 531 via a pipe.

[0079] Combination Figure 1 As shown, the first reversing mechanism 90 includes a four-way valve. The four-way valve includes a fifth valve port 91, a sixth valve port 92, a seventh valve port 93, and an eighth valve port 94. The fifth valve port 91 is connected to the exhaust port 11, the sixth valve port 92 is connected to the third port 31, the seventh valve port 93 is connected to the sixth port 42, and the eighth valve port 94 is connected to the return port 12 via pipes. The main function of the first reversing mechanism 90 is to switch the air conditioning heat pump system between cooling and heating modes by changing the direction of refrigerant flow. Furthermore, by rationally utilizing the first reversing mechanism 90 to control the refrigerant flow under different operating modes, it is possible to ensure that the outdoor heat exchanger 30 and the indoor heat exchanger 40 operate under their respective suitable conditions, thereby improving heat exchange efficiency.

[0080] Specifically, when the air conditioning heat pump system switches to defrost mode, the fifth valve port 91 and the sixth valve port 92 are connected; or, when the air conditioning heat pump system switches to cooling mode or cooling + partial heat recovery mode, the fifth valve port 91 and the sixth valve port 92 are connected, and the eighth valve port 94 and the seventh valve port 93 are connected; or, when the air conditioning heat pump system switches to heating mode or heating + domestic hot water mode, the fifth valve port 91 and the seventh valve port 93 are connected, and the eighth valve port 94 and the sixth valve port 92 are connected; or, when the air conditioning heat pump system switches to domestic hot water mode, the sixth valve port 92 and the eighth valve port 94 are connected; or, when the air conditioning heat pump system switches to cooling + total heat recovery mode, the seventh valve port 93 and the eighth valve port 94 are connected.

[0081] Combination Figure 1 As shown, the compressor 10 also includes an air inlet 13, and the air conditioning heat pump system also includes an economizer 60 and a third throttling device 70. The economizer 60 and the third throttling device 70 enable the system to increase enthalpy according to different operating conditions and demands, thereby improving the heat pump's operating efficiency and heating effect in cold environments. Specifically, the economizer 60 includes an eleventh port 61, a twelfth port 62, a thirteenth port 63, and a fourteenth port 64; the third throttling device 70 includes a fifteenth port 71 and a sixteenth port 72. The eleventh port 61 is connected to the eighth port 522, the thirteenth port 63 is connected to the air inlet 13, and the fourteenth port 64 is connected to the ninth port 531 via pipes. The fifteenth port 71 is connected to the pipe between the eighth port 522 and the eleventh port 61 via a pipe, and the sixteenth port 72 is connected to the twelfth port 62 via a pipe.

[0082] Specifically, the economizer 60 enhances cooling and heating capacity and improves the energy efficiency ratio. The economizer 60 works by allowing a portion of the refrigerant to undergo secondary throttling and evaporation, producing low-temperature, low-pressure refrigerant vapor. This vapor enters the intermediate chamber of the compressor 10 through the gas injection port 13, increasing the compressor 10's discharge volume and thus improving the system's cooling and heating capacity. In cold winters, the gas injection allows the compressor 10 to output more heat to meet indoor heating needs; in hot summers, it also increases cooling capacity, allowing the room to reach the set temperature more quickly. Through the gas injection cycle of the economizer 60, the compressor 10 can operate under more optimal conditions, reducing its compression ratio and power consumption. The gas injection port 13 on the compressor 10 lowers its discharge temperature, preventing overheating and extending its lifespan. Furthermore, a stable discharge temperature helps maintain the physical properties of the refrigerant within the system, ensuring stable system operation.

[0083] Furthermore, the air conditioning heat pump system also includes a liquid receiver 80. Exemplarily, the liquid receiver 80 can be a liquid receiver, which can be either a high-pressure liquid receiver or a low-pressure liquid receiver. The specific type depends on the location of the liquid receiver in the air conditioning heat pump system, and this application does not impose specific limitations. The working principle of the liquid receiver is based on the circulation characteristics of the refrigerant in the system. When the refrigerant flow rate or operating conditions in the system change, the liquid receiver can temporarily store excess refrigerant liquid, or replenish the system with refrigerant when needed, to maintain normal refrigerant circulation and pressure stability in the system.

[0084] Specifically, such as Figure 1 As shown, the liquid storage device 80 includes a seventeenth port 81 and an eighteenth port 82. The seventeenth port 81 is connected to the tenth port 532, and the eighteenth port 82 is connected to the fifth port 41 via pipes. In the air conditioning heat pump system, the liquid storage device 80 stabilizes the refrigerant flow, preventing large fluctuations in refrigerant flow, ensuring the system can quickly and stably enter operating conditions, and guaranteeing the reliability of system operation. Furthermore, the liquid storage device 80 helps optimize the system's heat transfer process. A stable refrigerant flow allows for a more uniform refrigerant distribution within the indoor heat exchanger 40 and the outdoor heat exchanger 30, improving heat transfer efficiency and thus enhancing the system's cooling or heating performance.

[0085] Furthermore, a first filter 170 is provided before the first throttling device 52, and a second filter 171 is provided after the second throttling device 53. The first filter 170 and the second filter 171 are used to protect the first throttling device 52 and the second throttling device 53, respectively, to prevent blockage of the throttling devices or the refrigerant flow passage, avoid affecting the throttling effect, and thus improve the operational stability of the system.

[0086] Combination Figure 1 As shown in this application, a one-way valve 180 is also provided on the pipe between the eighth valve port 94 and the return gas port 12. The one-way valve 180 is open in the direction from the eighth valve port 94 to the return gas port 12. This one-way valve 180 can prevent refrigerant from flowing back into the eighth valve port of the first reversing mechanism 90 in defrosting mode, thereby ensuring the normal and stable operation of the system and improving the cooling or heating effect.

[0087] Combination Figure 9As shown, the air conditioning heat pump system also includes a gas separator 110, which includes a nineteenth port 111 and a twentieth port 112. The nineteenth port 111 is connected to the eighth valve port 94, and the twentieth port 112 is connected to the return gas port 12 via pipes. During operation of the air conditioning heat pump system, the refrigerant absorbs heat and evaporates from the outdoor heat exchanger 30 or the indoor heat exchanger 40, typically flowing out in a gas-liquid mixture. The gas separator 110 effectively separates the gaseous and liquid refrigerant, preventing liquid refrigerant from entering the compressor 10, avoiding liquid slugging, protecting the safe operation of the compressor 10, and extending its service life. The separated liquid refrigerant, at a lower temperature, can be further cooled in the gas separator 110 before entering the indoor heat exchanger 40 or the outdoor heat exchanger 30, enhancing the cooling or heating effect of the indoor heat exchanger 40 or the outdoor heat exchanger 30. Gaseous refrigerant can enter the compressor 10 more purely, making the compression process of the compressor 10 closer to the ideal state, improving compression efficiency, thereby enhancing the cooling or heating capacity of the entire system and optimizing the system's energy efficiency ratio.

[0088] Furthermore, in this application, the air conditioning heat pump system also includes a pressure relief branch, which includes a fourth control valve 120 and a fourth throttling device 130. The fourth control valve 120 includes a ninth valve port 121 and a tenth valve port 122. The fourth throttling device 130 includes a twenty-first port 131 and a twenty-second port 132. The ninth valve port 121 is connected to the pipe between the eighth valve port 94 and the nineteenth port 111 via a pipe. The tenth valve port 122 is connected to the twenty-first port 131, and the twenty-second port 132 is connected to the exhaust port 11 via pipes. Optionally, the fourth control valve 120 is a bypass valve. The bypass valve can optimize system performance, maintain stable pressure, and improve energy efficiency. It can also enhance system stability and flexibility, adapt to changes in operating conditions, and reduce downtime due to failures. The fourth throttling device 130 can be a throttling element such as a capillary tube. The capillary tube can reduce the refrigerant pressure drawn from the high-pressure end to a level suitable for return to the low-pressure end, avoiding the impact on the system caused by excessive pressure difference during the pressure relief process. This capillary tube can also control the flow rate, ensuring the stable operation of the system.

[0089] Specifically, setting up a pressure relief branch in an air conditioning heat pump system can prevent excessive pressure and avoid damage to critical components such as the compressor 10, outdoor heat exchanger 30, and indoor heat exchanger 40. The presence of the pressure relief branch allows some refrigerant to flow back to the compressor 10's return port 12 through the fourth throttling device 130 when the system pressure exceeds the safe range, thereby reducing system pressure and protecting system components from high-pressure damage. In some air conditioning heat pump systems, excessive system pressure can cause the compressor 10 to shut down and then restart after a period of time. Frequent start-stop cycles can affect the performance and lifespan of the compressor 10, as well as the stability of the air conditioning heat pump system. The pressure relief branch can release some pressure, thus preventing the compressor 10 from frequently starting and stopping, improving the stability of the air conditioning heat pump system. Figure 1 As shown, the air conditioning heat pump system also includes a hot water tank 140, which includes an inlet 141 and an outlet 142. The heat exchange device 20 includes an inlet 23 and an outlet 24. The outlet 142 and inlet 23, and the outlet 24 and inlet 141 are connected by pipes. A pump body 150 and a temperature sensor 160 are installed on the pipe between the outlet 142 and inlet 23. By controlling the opening and closing of the pump body 150, the water in the hot water tank 140 can be controlled to circulate within the pipes, exchanging heat with the refrigerant through the heat exchange device 20. The temperature sensor 160 is used to monitor the temperature of the water in the pipes. The air conditioning heat pump system outputs control commands based on the temperature signal from the temperature sensor 160, ensuring that the heat transfer process between the hot water tank 140 and the heat exchange device 20 is always in a dynamic equilibrium state. This satisfies the user's real-time temperature requirements while ensuring the efficient and safe operation of the air conditioning heat pump system. In this embodiment, the hot water in the hot water tank 140 provides a heat source for the heat exchange device 20. In this application, by setting up the hot water tank 140 and transferring the heat of the refrigerant to the water in the hot water tank 140 through the heat exchange device 20, heat recovery and utilization can be achieved, improving energy utilization efficiency and energy saving. It also helps reduce the heat dissipation burden of the air conditioning system itself, making the operation of the air conditioning heat pump system more stable. In this embodiment, the heat exchange device 20 can be, but is not limited to, at least one of a coaxial heat exchanger and a plate heat exchanger. In this case, the defrosting mode of the air conditioning heat pump system in this embodiment is a hot water defrosting mode.

[0090] The air conditioning heat pump system in this embodiment includes defrosting mode, cooling mode, heating mode, domestic hot water production mode, cooling + total heat recovery mode, cooling + partial heat recovery mode, and heating + domestic hot water mode. By controlling the first reversing mechanism 90, the second reversing mechanism 51, and the control components, the air conditioning heat pump system can switch between at least two of the following modes: defrosting mode, cooling mode, heating mode, domestic hot water production mode, cooling + total heat recovery mode, cooling + partial heat recovery mode, and heating + domestic hot water mode.

[0091] Specifically, such as Figure 1 and Figure 2 As shown, when the air conditioning heat pump system is in defrost mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the outdoor heat exchanger 30, the throttling mechanism, the heat exchange device 20, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the defrost mode cycle.

[0092] like Figure 1 and Figure 3 As shown, when the air conditioning heat pump system is in cooling mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the outdoor heat exchanger 30, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the cooling mode cycle.

[0093] like Figure 1 and Figure 4 As shown, when the air conditioning heat pump system is in heating mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the indoor heat exchanger 40, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the cycle of heating mode.

[0094] like Figure 1 and Figure 5 As shown, when the air conditioning heat pump system is in the domestic hot water production mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the domestic hot water production mode cycle.

[0095] like Figure 1 and Figure 6 As shown, when the air conditioning heat pump system is in the cooling + total heat recovery mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the cooling + total heat recovery mode cycle.

[0096] like Figure 1 and Figure 7 As shown, when the air conditioning heat pump system is in the cooling + partial heat recovery mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the outdoor heat exchanger 30, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the cooling + partial heat recovery mode cycle.

[0097] like Figure 1 and Figure 8As shown, when the air conditioning heat pump system is in heating + domestic hot water mode, the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the indoor heat exchanger 40, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10, and the entire air conditioning heat pump system completes the cycle of heating + domestic hot water mode.

[0098] On the other hand, see Figures 1 to 9 As shown, this application also provides a control method for an air conditioning heat pump system, which is used to control the aforementioned air conditioning heat pump system.

[0099] Specifically, the air conditioning heat pump system in this embodiment has defrosting mode, cooling mode, heating mode, domestic hot water production mode, cooling + total heat recovery mode, cooling + partial heat recovery mode, and heating + domestic hot water mode.

[0100] In actual use, by controlling the control components, the first reversing mechanism 90 and the second reversing mechanism 51, the air conditioning heat pump system can be switched between at least two of the following modes: defrosting mode, cooling mode, heating mode, domestic hot water mode, cooling + total heat recovery mode, cooling + partial heat recovery mode, and heating + domestic hot water mode.

[0101] See Figure 2 As shown, when the air conditioning heat pump system needs to switch to defrost mode, it is only necessary to control the connection between the second reversing mechanism 51 and the fifth valve port 91 of the first reversing mechanism 90, and to make the fifth valve port 91 and the sixth valve port 92 of the first reversing mechanism 90 open, opening the first throttling device 52, the second control valve 54, and the third control valve 55, 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 sequentially through the exhaust port 11 of the compressor 10, the outdoor heat exchanger 30, the throttling mechanism, the heat exchange device 20, and the return port 12 of the compressor 10. Figure 2 As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 condenses and releases heat in the outdoor heat exchanger 30 to defrost. After being throttled and expanded by the first throttling device 52, it flows through the second control valve 54 and enters the heat exchange device 20. The refrigerant absorbs heat and evaporates in the heat exchange device 20, and then flows further through the third control valve 55 and the gas separator 110 before returning to the compressor 10 from the return port 12 to begin a new cycle. In this mode, the pump 150 of the hot water tank 140 is activated, allowing the hot water in the hot water tank 140 to enter the heat exchange device 20 to transfer heat to the refrigerant.

[0102] See Figure 3As shown, when the air conditioning heat pump system needs to switch to cooling mode, it is only necessary to control the fifth valve port 91 of the second reversing mechanism 51 and the first reversing mechanism 90 to be open, and to make the fifth valve port 91 and the sixth valve port 92 of the first reversing mechanism 90 open, opening the first throttling device 52 and the second throttling device 53, so that the other valves in the air conditioning heat pump system are closed, allowing the refrigerant in the air conditioning heat pump system to flow along the second circulation loop. The refrigerant flow path in the second circulation loop is that the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the outdoor heat exchanger 30, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10. Figure 3 As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 condenses and releases heat in the outdoor heat exchanger 30. It then flows sequentially through the first throttling device 52, the economizer 60, and the second throttling device 53, before passing through the liquid storage device 80 and entering the indoor heat exchanger 40. In the indoor heat exchanger 40, the refrigerant absorbs heat and evaporates to achieve cooling (at this time, the water pump at the corresponding end of the indoor heat exchanger 40 starts circulating, pumping the air conditioning water from the end into the indoor heat exchanger 40, where the refrigerant exchanges heat with the air conditioning water at the end of the indoor heat exchanger 40, cooling the water and achieving terminal cooling). It then flows sequentially through the first reversing mechanism 90 and the gas separator 110, returning to the compressor 10 from the return port 12 for a new cycle. The high-temperature refrigerant condenses and releases heat at the outdoor heat exchanger 30, then evaporates at the indoor heat exchanger 40, absorbing indoor heat to achieve a cooling effect.

[0103] See Figure 4 As shown, when the air conditioning heat pump system needs to switch to heating mode, it is only necessary to control the second reversing mechanism 51 to be connected to the second port 22 of the heat exchange device 20, and to make the fifth valve port 91 and the seventh valve port 93 of the first reversing mechanism 90 connected, opening the first throttling device 52, the second throttling device 53 and the third throttling device 70, and controlling the other valves in the air conditioning heat pump system to close, 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 sequentially through the exhaust port 11 of the compressor 10, the indoor heat exchanger 40, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10. Figure 4As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 enters the indoor heat exchanger 40 through the first reversing mechanism 90 for condensation and heat release to generate heat (at this time, the water pump at the corresponding end of the indoor heat exchanger 40 starts circulation, pumping the air conditioning water in the end into the indoor heat exchanger 40, where the refrigerant exchanges heat with the air conditioning water in the end, and the air conditioning water in the end becomes hot, achieving end-point heating). After flowing through the liquid storage device 80, it undergoes throttling and expansion through the second throttling device 53, and the refrigerant further enters the outdoor heat exchanger 30. The refrigerant absorbs heat and evaporates in the outdoor heat exchanger 30, and then flows through the first reversing mechanism 90 and the gas separation device 110 before flowing back into the compressor 10 from the return port 12 of the compressor 10 for a new cycle. The high-temperature refrigerant releases heat at the indoor heat exchanger 40 to achieve the indoor heating effect.

[0104] See Figure 5 As shown, when the air conditioning heat pump system needs to switch to domestic hot water production mode, it is only necessary to control the second reversing mechanism 51 to be connected to the second port 22 of the heat exchange device 20, the sixth valve port 92 and the eighth valve port 94 of the first reversing mechanism 90 to be connected, and the eleventh port 61 and the fourteenth port 64 of the economizer 60 to be connected, opening the second control valve 54 and the first throttling device 52, closing other valves in the air conditioning heat pump system, and allowing the refrigerant in the air conditioning heat pump system to flow along the fourth circulation loop. The refrigerant flow path in the fourth circulation loop is that the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10. Figure 5 As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 enters the heat exchange device 20 through the second reversing mechanism 51 for condensation and heat release to produce domestic hot water (at this time, the pump 150 at the hot water tank 140 is turned on to realize water circulation, the refrigerant exchanges heat with the water in the hot water tank 140, and the water in the hot water tank 140 becomes hot, thus producing domestic hot water). Afterwards, it flows through the second control valve 54, the economizer 60, and the first throttling device 52 before entering the outdoor heat exchanger 30. The refrigerant absorbs heat and evaporates in the outdoor heat exchanger 30. Afterwards, it flows through the first reversing mechanism 90 and the gas separation device 110 before flowing back into the compressor 10 from the return port 12 of the compressor 10 to start a new cycle. All the heat of the high-temperature refrigerant is exchanged at the heat exchange device 20 to produce hot water, and then evaporates at the outdoor heat exchanger 30 to absorb heat from the outdoor air.

[0105] See Figure 6As shown, when the air conditioning heat pump system needs to switch to cooling + total heat recovery mode, it is only necessary to control the second reversing mechanism 51 to be connected to the second port 22 of the heat exchange device 20, and to make the seventh valve port 93 and the eighth valve port 94 of the first reversing mechanism 90 connected, opening the second control valve 54 and the second throttling device 53, and closing other valves in the air conditioning heat pump system, so that the refrigerant in the air conditioning heat pump system flows along the fifth circulation loop. The refrigerant flow path in the fifth circulation loop is that the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10. Figure 6 As shown, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 enters the heat exchange device 20 through the second reversing mechanism 51 for condensation and heat release so that the heat is fully recovered by the water (at this time, the pump body 150 on the hot water tank 140 is turned on, realizing the water circulation in the heat exchange device 20, the refrigerant exchanges heat with the water in the hot water tank 140, and the water in the hot water tank 140 becomes hot). After that, it flows through the second control valve 54, the second throttling device 53 and the liquid storage device 80 and then enters the indoor heat exchanger 40. The refrigerant absorbs heat and evaporates in the indoor heat exchanger 40 to cool (at this time, the water pump at the end of the indoor heat exchanger 40 is turned on to circulate and pump the air conditioning water in the end into the indoor heat exchanger 40, the refrigerant exchanges heat with the air conditioning water, and the water becomes cold). It then flows through the first reversing mechanism 90 and the gas separation device 110 in sequence and flows back to the compressor 10 from the return port 12 of the compressor 10 to start a new cycle. In this mode, all the heat from the high-temperature refrigerant is exchanged at the heat exchanger 20, so that during summer cooling, all the heat originally used for heat exchange and control can be used to produce hot water, and the outdoor heat exchanger 30 does not need to be activated for heat dissipation. Specifically, total heat recovery means that the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 10 undergoes a phase change in the heat exchanger 20, releasing latent heat of phase change, and all the heat from the refrigerant is recovered in the heat exchanger 20.

[0106] See Figure 7 As shown, when the air conditioning heat pump system needs to switch to cooling + partial heat recovery mode, it is only necessary to control the second reversing mechanism 51 to be connected to the second port 22 of the heat exchange device 20, and to make the fifth valve port 91 of the first reversing mechanism 90 connected to the sixth valve port 92, and the seventh valve port 93 connected to the eighth valve port 94. This opens the first control valve 100, the first throttling device 52, the second throttling device 53, and the third throttling device 70, while closing other valves in the air conditioning heat pump system, allowing the refrigerant in the air conditioning heat pump system to flow along the sixth circulation loop. The refrigerant flow path in the sixth circulation loop is as follows: the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the outdoor heat exchanger 30, the throttling mechanism, the indoor heat exchanger 40, and the return port 12 of the compressor 10. Figure 7As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 enters the heat exchange device 20 through the second reversing mechanism 51 for condensation and heat release, so that the heat is partially recovered by the hot water (at this time, the pump body 150 on the hot water tank 140 is turned on, so that the water in the hot water tank 140 circulates in the heat exchange device 20, and the refrigerant exchanges heat with the water in the hot water tank 140, and the water in the hot water tank 140 becomes hot). After that, it flows through the first control valve 100 and the first reversing mechanism 90 and enters the outdoor heat exchanger 30. After being throttled and expanded by the first throttling device 52, the economizer 60, the second throttling device 53 and the third throttling device 70, it flows through the liquid storage tank. After being placed at 80, the refrigerant enters the indoor heat exchanger 40. In the indoor heat exchanger 40, the refrigerant absorbs heat and evaporates to achieve cooling (at this time, the water pump at the corresponding end of the indoor heat exchanger 40 starts to circulate, pumping the air conditioning water in the end into the indoor heat exchanger 40, where the refrigerant exchanges heat with the air conditioning water in the end, and the air conditioning water in the end becomes cold). It then flows sequentially through the first reversing mechanism 90 and the gas distribution device 110 and returns to the compressor 10 from the return port 12. This is equivalent to the refrigerant releasing sensible heat at the heat exchange device 20, then condensing and releasing latent heat in the outdoor heat exchanger 30, and then evaporating at the indoor heat exchanger 40 to absorb indoor heat to achieve a cooling effect.

[0107] Partial heat recovery refers to the fact that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 10 does not undergo a phase change in the heat exchange device 20 and does not release the latent heat of phase change.

[0108] See Figure 8 As shown, when the air conditioning heat pump system needs to switch to heating + domestic hot water mode, it is only necessary to control the second reversing mechanism 51 to be connected to the second port 22 of the heat exchange device 20, and to make the fifth valve port 91 of the first reversing mechanism 90 connected to the seventh valve port 93, and the sixth valve port 92 connected to the eighth valve port 94. This opens the first throttling device 52, the second throttling device 53, the third throttling device 70, and the first control valve 100, while closing other valves in the air conditioning heat pump system, allowing the refrigerant in the air conditioning heat pump system to flow along the seventh circulation loop. The refrigerant flow path in the seventh circulation loop is as follows: the refrigerant flows sequentially through the exhaust port 11 of the compressor 10, the heat exchange device 20, the indoor heat exchanger 40, the throttling mechanism, the outdoor heat exchanger 30, and the return port 12 of the compressor 10. Figure 8As shown, the high-temperature, high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 10 enters the heat exchange device 20 through the second reversing mechanism 51 for condensation and heat release, thus heating the water circulating in the hot water tank 140 within the heat exchange device 20. Afterward, it passes through the first reversing mechanism 90 into the indoor heat exchanger 40. Following the liquid storage device 80, it undergoes throttling and expansion via the second throttling device 53, the economizer 60, and the first throttling device 52. Then, it enters the outdoor heat exchanger 30 to absorb heat and evaporate. It then flows sequentially through the first reversing mechanism 90 and the gas separation device 110, returning to the compressor 10 through the return port 12 for a new cycle. Part of the heat from the high-temperature refrigerant is exchanged at the heat exchange device 20, and the other part is released through the indoor heat exchanger 40 to achieve indoor heating. Furthermore, in this mode, the refrigerant evaporates at the outdoor heat exchanger 30, absorbing heat from the outdoor air.

[0109] Based on the above embodiments, it can be seen that the air conditioning heat pump system of this application has at least the following technical effects:

[0110] (1) The heat exchange device, the first control valve and the second control valve of this application enable the air conditioning heat pump system to defrost without changing the indoor state during operation, thereby improving the user experience. The system design is relatively simple, and while realizing the hot water defrosting mode, it can also realize the summer cooling full heat recovery mode.

[0111] (2) The air conditioning heat pump system of this application can freely switch between 7 modes, making the system more flexible.

[0112] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0113] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0114] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air conditioning heat pump system, characterized in that, include: The refrigerant circulation main circuit includes a compressor (10), a heat exchange device (20), an outdoor heat exchanger (30), and an indoor heat exchanger (40). The compressor (10) includes an exhaust port (11) and a return port (12). The heat exchange device (20) includes a first port (21) and a second port (22). The outdoor heat exchanger (30) includes a third port (31) and a fourth port (32). The indoor heat exchanger (40) includes a fifth port (41) and a sixth port (42). The exhaust port (11) is connected to the third port (31), the fourth port (32) is connected to the fifth port (41), and the sixth port (42) is connected to the return port (12) through a pipe. The first port (21) is connected to the pipe between the fourth port (32) and the fifth port (41) through a pipe. The second port (22) is connected to the return port (12) through a pipe. The air conditioning heat pump system also includes a throttling mechanism, which is installed on the refrigerant circulation main circuit and is used to throttle the refrigerant. The air conditioning heat pump system also includes a control component for forming a circulation path to defrost the outdoor heat exchanger (30) using the heat released by the heat exchange device (20) when the air conditioning heat pump system is in defrosting mode.

2. The air conditioning heat pump system according to claim 1, characterized in that, The air conditioning heat pump system also includes a first reversing mechanism (90); The exhaust port (11) is connected to the third port (31) and / or the sixth port (42) through the first reversing mechanism (90); The return air port (12) is connected to the third port (31) and / or the sixth port (42) through the first reversing mechanism (90); The air conditioning heat pump system further includes a cooling mode, a heating mode, and a defrosting mode. By controlling the control component and the first reversing mechanism (90), the air conditioning heat pump system can switch between at least two of the cooling mode, the heating mode, and the defrosting mode.

3. The air conditioning heat pump system according to claim 2, characterized in that, The air conditioning heat pump system also includes a second reversing mechanism (51); The exhaust port (11) is connected to the second port (22) via a pipe through the second reversing mechanism (51); The second reversing mechanism (51) is connected to the first reversing mechanism (90) via a pipe; The exhaust port (11) is connected to the third port (31) in sequence through the second reversing mechanism (51) and the first reversing mechanism (90); and / or, the exhaust port (11) is connected to the sixth port (42) in sequence through the second reversing mechanism (51) and the first reversing mechanism (90); The air conditioning heat pump system also includes a cooling + total heat recovery mode and a domestic hot water production mode. By controlling the control component, the first reversing mechanism (90) and the second reversing mechanism (51), the air conditioning heat pump system can switch between at least two of the cooling mode, the heating mode, the defrosting mode, the cooling + total heat recovery mode and the domestic hot water production mode.

4. The air conditioning heat pump system according to claim 3, characterized in that, The air conditioning heat pump system also includes a first control valve (100); The first control valve (100) includes a first connection port (101) and a second connection port (102), and the first connection port (101) is connected to the first port (21) through a pipe; The second connection port (102) is connected to the pipe between the second reversing mechanism (51) and the first reversing mechanism (90) through a pipe; The air conditioning heat pump system also includes a cooling + partial heat recovery mode and a heating + domestic hot water mode. By controlling the control component, the first reversing mechanism (90) and the second reversing mechanism (51), the air conditioning heat pump system can switch between at least two of the following modes: cooling mode, heating mode, defrosting mode, cooling + full heat recovery mode, domestic hot water mode, cooling + partial heat recovery mode and heating + domestic hot water mode.

5. The air conditioning heat pump system according to claim 4, characterized in that, The control assembly includes a second control valve (54) and a third control valve (55); The second control valve (54) includes a first valve port (541) and a second valve port (542); The third control valve (55) includes a third valve port (551) and a fourth valve port (552); The first valve port (541) is connected to the fourth port (32) and / or the fifth port (41) through the throttling mechanism; The second valve port (542) is connected to the pipe between the first port (21) and the first connection port (101) via a pipe; The fourth valve port (552) is connected to the return air port (12) via a pipeline; The third valve port (551) is connected to the pipe between the second reversing mechanism (51) and the second port (22) via a pipe.

6. The air conditioning heat pump system according to claim 5, characterized in that, The throttling mechanism includes a first throttling device (52) and a second throttling device (53); The first throttling device (52) includes a seventh port (521) and an eighth port (522); The second throttling device (53) includes a ninth port (531) and a tenth port (532); The seventh port (521) and the fourth port (32), the eighth port (522) and the ninth port (531), and the tenth port (532) and the fifth port (41) are all connected by pipes; The first valve port (541) is connected to the pipe between the eighth port (522) and the ninth port (531) via a pipe.

7. The air conditioning heat pump system according to claim 4, characterized in that, The first reversing mechanism (90) includes a four-way valve; The four-way valve includes a fifth valve port (91), a sixth valve port (92), a seventh valve port (93), and an eighth valve port (94); the fifth valve port (91) is connected to the exhaust port (11), the sixth valve port (92) is connected to the third port (31), the seventh valve port (93) is connected to the sixth port (42), and the eighth valve port (94) is connected to the return air port (12) through pipes; When the air conditioning heat pump system switches to the defrosting mode, the fifth valve port (91) and the sixth valve port (92) are connected; or, When the air conditioning heat pump system switches to the cooling mode or the cooling + partial heat recovery mode, the fifth valve port (91) is connected to the sixth valve port (92), and the eighth valve port (94) is connected to the seventh valve port (93); or, When the air conditioning heat pump system switches to the heating mode or the heating + domestic hot water mode, the fifth valve port (91) is connected to the seventh valve port (93), and the eighth valve port (94) is connected to the sixth valve port (92); or, When the air conditioning heat pump system switches to the domestic hot water production mode, the sixth valve port (92) and the eighth valve port (94) are connected; or, When the air conditioning heat pump system switches to the refrigeration + total heat recovery mode, the seventh valve port (93) and the eighth valve port (94) are connected.

8. The air conditioning heat pump system according to claim 7, characterized in that, A one-way valve (180) is provided on the pipeline between the eighth valve port (94) and the return air port (12), and the one-way valve (180) is open in the direction from the eighth valve port (94) to the return air port (12).

9. The air conditioning heat pump system according to claim 6, characterized in that, The compressor (10) also includes an air inlet (13); The air conditioning heat pump system also includes an economizer (60) and a third throttling device (70); The economizer (60) includes an eleventh port (61), a twelfth port (62), a thirteenth port (63), and a fourteenth port (64); The third throttling device (70) includes a fifteenth port (71) and a sixteenth port (72); The eleventh port (61) is connected to the eighth port (522), the thirteenth port (63) is connected to the air supply port (13), and the fourteenth port (64) is connected to the ninth port (531) via pipes. The fifteenth port (71) is connected to the pipe between the eighth port (522) and the eleventh port (61) via a pipe. The sixteenth port (72) is connected to the twelfth port (62) via a pipe. And / or, The air conditioning heat pump system also includes a liquid storage device (80), which includes a seventeenth port (81) and an eighteenth port (82). The seventeenth port (81) is connected to the tenth port (532), and the eighteenth port (82) is connected to the fifth port (41) through pipes.

10. The air conditioning heat pump system according to any one of claims 1 to 9, characterized in that, The air conditioning heat pump system also includes a hot water tank (140), which includes an inlet (141) and an outlet (142). The heat exchange device (20) includes an inlet (23) and an outlet (24). The outlet (142) and the inlet (23) are connected by pipes, and the outlet (24) and the inlet (141) are connected by pipes.

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