Air-conditioning system

Abstract

Provided is an air-conditioning system. The air-conditioning system comprises a compressor, a four-way valve, a gas-liquid separator, a water tank, a throttling device, a liquid storage device, a target heat exchanger, a first circuit, a valve assembly, and a controller. The controller is coupled to the valve assembly and the four-way valve, so as to control the connection or disconnection of the first circuit. The controller is configured to obtain a target operation mode of the air-conditioning system, wherein the target operation mode comprises a water heating mode. The state of the valve assembly and the connection state between different ports of the four-way valve are controlled according to the target operation mode, so as to adjust the water temperature in the water tank.

Description

Air conditioning system

[0001] This application claims priority to Chinese patent application No. 202311119252.1 filed on August 31, 2023; priority to Chinese patent application No. 202311119322.3 filed on August 31, 2023; priority to Chinese patent application No. 202311119288.X filed on August 31, 2023; priority to Chinese patent application No. 202311119275.2 filed on August 31, 2023; priority to Chinese patent application No. 202311119311.5 filed on August 31, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioning system. Background Art

[0003] Air conditioning systems are widely used to regulate indoor temperatures and consist of indoor and outdoor units. The indoor unit is located indoors and is used to exchange heat with the indoor air. The outdoor unit includes a compressor, which compresses low-temperature, low-pressure refrigerant into high-temperature, high-pressure refrigerant and outputs it to a heat exchanger for heat exchange between the refrigerant and the air.

[0004] Summary of the Invention

[0005] In one aspect, an air conditioning system is provided. The air conditioning system includes a compressor, a four-way valve, an air-liquid separator, a water tank, a throttling device, a liquid reservoir, a target heat exchanger, a first circuit, a valve assembly, and a controller. The four-way valve includes a first port, a second port, a third port, and a fourth port. The air-liquid separator is connected to the first end and the second port of the compressor. The water tank is connected to the second end and the fourth port of the compressor. The liquid reservoir is connected to the throttling device. The target heat exchanger is connected to the first port and the third port and is configured to exchange heat with air to absorb heat from the air. Refrigerant flows through the first circuit, and the first circuit includes a heat exchange path formed by connecting the compressor and the water tank and configured to exchange heat between the refrigerant in the heat exchange path and water in the water tank. The valve assembly is disposed in the first circuit and is configured to open or close the first circuit. The controller is coupled to the valve assembly and the four-way valve to control the opening or closing of the first circuit. The controller is configured to: obtain a target operating mode of the air conditioning system, wherein the target operating mode includes a hot water production mode; and control a state of the valve assembly and a conduction state between different ports of the four-way valve according to the target operating mode to adjust the water temperature in the water tank.

[0006] In another aspect, an air conditioning system is provided. The air conditioning system includes a compressor, a four-way valve, an air-liquid separator, a water tank, a throttling device, a liquid reservoir, a first heat exchanger, a second heat exchanger, a second circuit, a valve assembly, and a controller. The four-way valve includes a first port, a second port, a third port, and a fourth port. The air-liquid separator is connected to the first end and the second port of the compressor. The water tank is connected to the second end and the fourth port of the compressor. The liquid reservoir is connected to the throttling device. The first heat exchanger is configured to exchange heat with first indoor air, with the first end of the first heat exchanger connected to the second end of the liquid reservoir, and the second end of the first heat exchanger connected to the first port. The second heat exchanger is configured to exchange heat with second indoor air, with the first end of the second heat exchanger connected to the first end of the throttling device and the first end of the liquid reservoir, and the second end of the second heat exchanger connected to the second end of the first heat exchanger and the third port. Refrigerant in the second circuit flows through the second circuit, thereby exchanging heat with the first indoor air and the second indoor air, respectively. The valve assembly is provided in the second circuit and is configured to open or close the second circuit; the controller is connected to the valve assembly and the four-way valve, and is configured to: obtain the target operating mode of the air-conditioning system; the target operating mode includes a fourth coordinated mode; the fourth coordinated mode includes a heating mode and a cooling mode; determine that the target operating mode is the fourth coordinated mode; control the opening and closing of the valve assembly according to the fourth coordinated mode, and control the third port and the fourth port of the four-way valve to be connected, so as to adjust one of the first heat exchanger and the second heat exchanger to be a condenser and the other to be an evaporator.

[0007] In some embodiments, the valve assembly includes a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, and a seventh valve. The first valve port of the first valve is connected to the third port, and the second valve port of the first valve is connected to the second end of the second heat exchanger. The first valve port of the second valve is connected to the second end of the throttling device, and the second valve port of the second valve is connected to the second valve port of the first valve. The first valve port of the third valve is connected to the first end of the second heat exchanger, and the second valve port of the third valve is connected to the first end of the throttling device and the first end of the liquid reservoir. The first valve port of the fourth valve is connected to the first end of the first heat exchanger, and the second valve port of the fourth valve is connected to the second end of the liquid reservoir. The first valve port of the fifth valve is connected to the first port, and the second valve port of the fifth valve is connected to the second end of the first heat exchanger. The first valve port of the sixth valve is connected to the second end of the first heat exchanger. The first valve port of the seventh valve is connected to the second valve port of the sixth valve, and the second valve port of the seventh valve is connected to the second end of the second heat exchanger.

[0008] In some embodiments, the valve assembly further includes a ninth valve and an eleventh valve. The first valve port of the ninth valve is connected to the outlet of the compressor and the water tank, and the second valve port of the ninth valve is connected to the second valve port of the sixth valve and the first valve port of the seventh valve. The first valve port of the eleventh valve is connected to the first end of the second heat exchanger, and the second valve port of the eleventh valve is connected to the second end of the throttling device and the first valve port of the second valve.

[0009] In some embodiments, the controller is further configured to: control the first heat exchanger to start, the second heat exchanger to start, and control the valve assembly to be in a twelfth state. In the twelfth state, the fourth valve, the fifth valve, the seventh valve, the ninth valve, and the eleventh valve are respectively turned on, and the first valve, the second valve, the third valve, and the sixth valve are respectively turned off.

[0010] In some embodiments, the valve assembly further includes a tenth valve and a twelfth valve. The first valve port of the tenth valve is connected to the second end of the second heat exchanger, and the second valve port of the tenth valve is connected to the second valve port of the first valve. The first valve port of the twelfth valve is connected to the outlet of the compressor and the water tank, and the second valve port of the twelfth valve is connected to the second valve port of the tenth valve. The controller is further configured to control the first heat exchanger to start and the second heat exchanger to start. The valve assembly is controlled to be in a thirteenth state. In the thirteenth state, the fourth valve, the fifth valve, the seventh valve, the tenth valve, the eleventh valve, and the twelfth valve are respectively turned on, and the first valve, the second valve, the third valve, the sixth valve, and the ninth valve are respectively turned off.

[0011] In some embodiments, the valve assembly further includes a tenth valve. A first valve port of the tenth valve is connected to the second end of the second heat exchanger, and a second valve port of the tenth valve is connected to the second valve port of the first valve. The controller is further configured to control the first heat exchanger to start and the second heat exchanger to start. The valve assembly is controlled to be in a fourteenth state. In the fourteenth state, the first, fourth, sixth, ninth, tenth, and eleventh valves are respectively open, and the second, third, fifth, and seventh valves are respectively closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1A is a block diagram of an air conditioning system according to some embodiments;

[0013] FIG1B is a schematic diagram of a refrigerant cycle corresponding to a cooling mode according to some embodiments;

[0014] FIG2 is a block diagram of an air conditioning system according to some embodiments;

[0015] FIG3 is another schematic diagram of a refrigerant cycle corresponding to a cooling mode according to some embodiments;

[0016] FIG4 is another schematic diagram of a refrigerant cycle corresponding to a cooling mode according to some embodiments;

[0017] FIG5 is another schematic diagram of a refrigerant cycle corresponding to a cooling mode according to some embodiments;

[0018] FIG6 is a schematic diagram of a refrigerant cycle corresponding to a heating mode according to some embodiments;

[0019] FIG7 is another schematic diagram of a refrigerant cycle corresponding to a heating mode according to some embodiments;

[0020] FIG8A is a flow chart illustrating steps performed by a controller according to some embodiments;

[0021] FIG8B is a schematic diagram of a refrigerant circulation corresponding to a hot water production mode according to some embodiments;

[0022] FIG9 is another schematic diagram of a refrigerant cycle corresponding to a hot water production mode according to some embodiments;

[0023] FIG10A is another flow chart of steps performed by a controller according to some embodiments;

[0024] FIG10B is a schematic diagram of a refrigerant cycle corresponding to a first collaborative mode according to some embodiments;

[0025] FIG11 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0026] FIG12 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0027] FIG13 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0028] FIG14 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0029] FIG15 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0030] FIG16 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0031] FIG17 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0032] FIG18 is another schematic diagram of a refrigerant cycle corresponding to the first collaborative mode according to some embodiments;

[0033] FIG19A is another flow chart of steps performed by a controller according to some embodiments;

[0034] FIG19B is a schematic diagram of a refrigerant cycle corresponding to a second collaborative mode according to some embodiments;

[0035] FIG20 is another schematic diagram of a refrigerant cycle corresponding to the second collaborative mode according to some embodiments;

[0036] FIG21 is another schematic diagram of a refrigerant cycle corresponding to the second collaborative mode according to some embodiments;

[0037] FIG22A is another flow chart of steps performed by a controller according to some embodiments;

[0038] FIG22B is a schematic diagram of a refrigerant cycle corresponding to a third collaborative mode according to some embodiments;

[0039] FIG23 is another schematic diagram of a refrigerant cycle corresponding to a third coordinated mode according to some embodiments;

[0040] FIG24A is another flow chart of steps performed by a controller according to some embodiments;

[0041] FIG24B is a schematic diagram of a refrigerant cycle corresponding to a fourth collaborative mode according to some embodiments;

[0042] FIG25 is another schematic diagram of a refrigerant cycle corresponding to the fourth coordinated mode according to some embodiments;

[0043] FIG26 is another schematic diagram of a refrigerant cycle corresponding to the fourth coordinated mode according to some embodiments;

[0044] FIG. 27 is another schematic diagram of the refrigerant circulation corresponding to the fourth coordinated mode according to some embodiments. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe some embodiments of the present disclosure in conjunction with the accompanying drawings. However, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0046] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0048] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0049] “At least one of A, B and C” has the same meaning as “at least one of A, B or C” and both include the following combinations of A, B and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C.

[0050] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0051] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0052] Air conditioning systems typically generate excess heat during operation. For example, when heating or cooling a room, the refrigerant in the condenser exchanges heat with the air, but the air cannot absorb all the heat released by the refrigerant. This unabsorbed heat is directly discharged into the environment, increasing thermal pollution and wasting energy.

[0053] To address the above issues, some embodiments of the present disclosure provide an air conditioning system 1000. Air conditioning system 1000 can meet cooling, heating, and hot water requirements, and can fully utilize excess heat generated by indoor units during cooling or heating to prepare hot water, thereby reducing environmental thermal pollution, reducing energy waste, and saving electricity costs.

[0054] In some embodiments, as shown in Fig. 1A, an air conditioning system 1000 includes an indoor unit 100. The indoor unit 100 is installed indoors and performs heat exchange with indoor air.

[0055] In some embodiments, as shown in FIG1A , the air conditioning system 1000 further includes an outdoor unit 200. The indoor unit 100 and the outdoor unit 200 are connected by a pipeline to transmit refrigerant.

[0056] It should be noted that, since the indoor unit 100 in FIG. 1A is located indoors and the outdoor unit 200 is located outdoors, the outdoor unit 200 is indicated by a dotted line in FIG. 1A .

[0057] In some embodiments, as shown in FIG1B , the air conditioning system 1000 includes a compressor 2. The compressor 2 is configured to compress the refrigerant so that the low-temperature and low-pressure refrigerant is compressed into a high-temperature and high-pressure refrigerant.

[0058] As shown in FIG1B , the air conditioning system 1000 further includes a four-way valve 7. The four-way valve 7 is configured to switch the flow direction of the refrigerant between different components. The four-way valve 7 includes four ports, namely a first port E, a second port S, a third port C, and a fourth port D.

[0059] It should be noted that according to the operating principle of a four-way valve, when the fourth port D is connected to one of the first port E and the third port C, the other two ports are also connected. For example, when the fourth port D is connected to the first port E, the second port S is connected to the third port C; for another example, when the fourth port D is connected to the third port C, the second port S is connected to the first port E.

[0060] As shown in FIG1B , air conditioning system 1000 further includes a gas-liquid separator 1. Gas-liquid separator 1 is configured to separate gaseous refrigerant from liquid refrigerant, allowing the gaseous refrigerant to enter compressor 2. A first end of gas-liquid separator 1 is connected to a first end of compressor 2. A second end of gas-liquid separator 1 is connected to third port C.

[0061] 1B , the air conditioning system 1000 further includes a target heat exchanger 30. The target heat exchanger 30 is connected to the four-way valve 7 and is configured to perform heat exchange with outdoor air or indoor air to absorb heat from the outdoor air or the indoor air.

[0062] As shown in FIG1B , the target heat exchanger 30 includes a third heat exchanger 3 (a finned heat exchanger). The third heat exchanger 3 is configured to exchange heat between air and a refrigerant transported through the third heat exchanger 3. A first end of the third heat exchanger 3 is connected to the second port S. It should be noted that the third heat exchanger 3 may be provided in the outdoor unit 200.

[0063] As shown in FIG1B , air conditioning system 1000 further includes a throttling device 4. For example, throttling device 4 includes an expansion valve. A second end of throttling device 4 is connected to a second end of third heat exchanger 3. The opening of throttling device 4 is adjustable to control the flow rate and pressure of the refrigerant flowing through throttling device 4. For example, throttling device 4 expands the liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant.

[0064] As shown in FIG1B , air conditioning system 1000 further includes a liquid reservoir 5. Liquid reservoir 5 is configured to store liquid refrigerant. A first end of liquid reservoir 5 is connected to a first end of throttling device 4. Thus, the pressure of the refrigerant flowing through third heat exchanger 3 and liquid reservoir 5 can be adjusted by adjusting the opening of throttling device 4, thereby regulating the refrigerant flow rate between third heat exchanger 3 and liquid reservoir 5.

[0065] 1B , the target heat exchanger 30 further includes a heat exchanger group 6. It should be noted that the heat exchanger group 6 may be provided in the indoor unit 100.

[0066] As shown in FIG1B , the heat exchanger group 6 includes a first heat exchanger 61. A first end of the first heat exchanger 61 is connected to a second end of the liquid reservoir 5. A second end of the first heat exchanger 61 is connected to a first port E.

[0067] As shown in FIG1B , the heat exchanger group 6 further includes a second heat exchanger 62. The second heat exchanger 62 is arranged in parallel with the first heat exchanger 61. The heat exchanger group 6 corresponds to multiple refrigerant flow branches, and the first heat exchanger 61 and the second heat exchanger 62 are arranged in different refrigerant flow branches.

[0068] The first end of the second heat exchanger 62 is connected to the second end of the throttling device 4 and the first end of the liquid reservoir 5. In this way, the pressure of the refrigerant flowing through the third heat exchanger 3 and the second heat exchanger 62 can be adjusted by adjusting the opening of the throttling device 4, thereby adjusting the refrigerant flow rate between the third heat exchanger 3 and the second heat exchanger 62. The second end of the second heat exchanger 62 is connected to the first port E.

[0069] It is understood that the first end of the second heat exchanger 62 is the first end of the heat exchanger group 6. The first end of the first heat exchanger 61 is the second end of the heat exchanger group 6. The second end of the first heat exchanger 61 is the third end of the heat exchanger group 6. The second end of the second heat exchanger 62 is the fourth end of the heat exchanger group 6.

[0070] As shown in FIG1B , the air conditioning system 1000 further includes a water tank 8. The water tank 8 is configured to contain water. A first end of the water tank 8 is connected to the fourth port D of the compressor. A second end of the water tank 8 is connected to the second end of the compressor 2.

[0071] In some embodiments, the water tank 8 includes heat exchange tubes, which may be in the form of coils. The water tank 8 also includes an inner liner. The inner liner may be made of metal, and the heat exchange tubes may be wound around the outer side of the inner liner.

[0072] In some embodiments, the water tank 8 further includes a heat conducting member disposed between the heat exchange tube and the inner tank to enhance heat transfer. For example, the heat conducting member is silicone grease.

[0073] As shown in FIG1B , air conditioning system 1000 further includes a first circuit 11 (refrigerant circuit). First circuit 11 is formed by interconnecting at least compressor 2, water tank 8, target heat exchanger 30, four-way valve 7, and gas-liquid separator 1. For example, at least a portion of compressor 2, four-way valve 7, third heat exchanger 3, throttling device 4, liquid reservoir 5, heat exchanger assembly 6, four-way valve 7, gas-liquid separator 1, water tank 8, and compressor 2 is interconnected to form first circuit 11.

[0074] It should be noted that different target operation modes of the air-conditioning system 1000 correspond to different first circuits 11 .

[0075] As shown in Figure 1B, the first circuit 11 includes a heat exchange path 12. A first end of the heat exchange path 12 is connected to the second end of the compressor 2, and a second end of the heat exchange path 12 is connected to the fourth port D. The high-temperature, high-pressure refrigerant discharged from the compressor 2 exchanges heat with the domestic water in the water tank 8 through the heat exchange path 12, thereby heating the domestic water and providing hot water.

[0076] As shown in FIG1B and FIG2 , the air conditioning system 1000 further includes a valve assembly 9 (control valve group). The valve assembly 9 is provided in the first circuit 11 and is configured to open or close the first circuit 11.

[0077] In some embodiments, as shown in FIG1B , the valve assembly 9 includes a first valve 901 . A first valve port a of the first valve 901 is connected to the third port C, and a second valve port b of the first valve 901 is connected to the first end of the third heat exchanger 3 .

[0078] As shown in FIG1B , the valve assembly 9 further includes a second valve 902 . A first valve port a of the second valve 902 is connected to a first end of the throttling device 4 , and a second valve port b of the fifth valve 905 is connected to a second end of the third heat exchanger 3 .

[0079] As shown in FIG1B , the valve assembly 9 further includes a third valve 903 . A first valve port a of the third valve 903 is connected to the first end of the second heat exchanger assembly 62 , and a second valve port b of the third valve 903 is connected to the second end of the throttling device 4 and the first end of the liquid reservoir 5 .

[0080] As shown in FIG1B , the valve assembly 9 further includes a fourth valve 904 . A first valve port a of the fourth valve 904 is connected to a first end of the first heat exchanger 61 , and a second valve port b of the fourth valve 904 is connected to a second end of the liquid reservoir 5 .

[0081] As shown in FIG1B , the valve assembly 9 further includes a fifth valve 905 . A first valve port a of the fifth valve 905 is connected to the first port E, and a second valve port b of the fifth valve 905 is connected to the second end of the first heat exchanger 61 .

[0082] As shown in FIG1B , the valve assembly 9 further includes a sixth valve 906 . A first valve port a of the sixth valve 906 is connected to the second end of the first heat exchanger 61 .

[0083] As shown in FIG1B , the valve assembly 9 further includes a seventh valve 907 . A first valve port a of the seventh valve 907 is connected to a second valve port b of the sixth valve 906 , and a second valve port b of the seventh valve 907 is connected to a second end of the second heat exchanger group 62 .

[0084] 1B , the valve assembly 9 further includes an eighth valve 908 . A first valve port a of the eighth valve 908 is connected to the second end of the heat exchange path 12 , and a second valve port b of the eighth valve 908 is connected to the third end of the liquid reservoir 5 .

[0085] In some embodiments, as shown in FIG1B , the valve assembly 9 further includes a ninth valve 909 . A first valve port a of the ninth valve 909 is connected to the second end of the compressor 2 , and a second valve port b of the ninth valve 909 is connected to the second valve port b of the sixth valve 906 and the first valve port a of the seventh valve 907 .

[0086] 1B , the valve assembly 9 further comprises a twelfth valve 912 . A first valve port a of the twelfth valve 912 is connected to the second end of the compressor 2 , and a second valve port b of the twelfth valve 912 is connected to the first end of the third heat exchanger 3 .

[0087] The first valve 901 , the second valve 902 , the third valve 903 , the fourth valve 904 , the fifth valve 905 , the sixth valve 906 , the seventh valve 907 , the eighth valve 908 , the ninth valve 909 and the twelfth valve 912 may be multi-way valves, for example, three-way valves or four-way valves.

[0088] It should be noted that by adjusting the opening and closing of each valve in the valve assembly 9, the flow direction of the refrigerant in the air conditioning system 1000 can be changed. The valve assembly 9 corresponds to multiple states. The multiple states correspond to different conduction and cutoff states of the multiple valves in the valve assembly 9.

[0089] It should be noted that when connecting the compressor 2, water tank 8, four-way valve 7, and gas-liquid separator 1, the connections must be made in a specific direction. That is, the compressor 2, water tank 8, four-way valve 7, and gas-liquid separator 1 have directionality. When connecting the valve assembly 9, first heat exchanger 61, second heat exchanger 62, and third heat exchanger 3, the directionality of the connections does not need to be considered.

[0090] In some embodiments, as shown in FIG2 , the air conditioning system 1000 further includes a controller 10. The controller 10 is connected to the valve assembly 9 and the four-way valve 7. The controller 10 includes a processor. The processor may include a central processing unit (CPU), a microprocessor (MCU), or an application-specific integrated circuit (ASIC). The processor may be configured to perform the corresponding operations described in the controller 10 when executing a program stored in a non-transitory computer-readable medium coupled to the controller 10.

[0091] In some embodiments, the controller 10 is configured to: obtain the target operating mode of the air-conditioning system 1000, control the opening and closing of the valve assembly 9 and the conduction between different ports of the four-way valve 7 according to the target operating mode to adjust the indoor temperature or adjust the temperature of the water in the water tank 8.

[0092] It should be noted that the target operation mode includes a cooling mode, a heating mode, and a hot water mode. Different target operation modes correspond to different control instructions.

[0093] It should be noted that the user can send control instructions to the air-conditioning system 1000 through language, gestures and other operating methods via the remote control, the application in the mobile terminal or the control panel on the body of the air-conditioning system 1000. After receiving the corresponding instructions, the air-conditioning system 1000 runs the target operating mode corresponding to the instruction.

[0094] Different target operation modes will be described below based on the various states corresponding to the valve assembly 9 and the conduction or cutoff between the four ports of the four-way valve 7.

[0095] In some embodiments, the target operating mode is the cooling mode. As shown in FIG1B and FIG3 , the first circuit 11 includes a fourteenth sub-circuit 111. The controller 10 is configured to control the valve assembly 9 to the fifteenth state and connect the third port C to the fourth port D in accordance with the cooling mode, thereby conducting the fourteenth sub-circuit 111 and causing the indoor temperature to reach a fifth preset temperature. The fifth preset temperature can be set by the user.

[0096] When the valve assembly 9 is in the fifteenth state, the first valve port a of the first valve 901 is in communication with the second valve port b of the first valve 901, the first valve port a of the second valve 902 is in communication with the second valve port b of the second valve 902, the first valve port a of the third valve 903 is in communication with the second valve port b of the third valve 903, the first valve port a of the fourth valve 904 is in communication with the second valve port b of the fourth valve 904, the first valve port a of the fifth valve 905 is in communication with the second valve port b of the fifth valve 905, the first valve port a of the sixth valve 906 is in communication with the second valve port b of the sixth valve 906, and the first valve port a of the seventh valve 907 is in communication with the second valve port b of the seventh valve 907. The first valve port a of the eighth valve 908 is blocked from the second valve port b of the eighth valve 908, the first valve port a of the ninth valve 909 is blocked from the second valve port b of the ninth valve 909, and the first valve port a of the twelfth valve 912 is blocked from the second valve port b of the twelfth valve 912.

[0097] When the first control command is sent to the air conditioning system 1000, the air conditioning system 1000 operates in cooling mode. As shown in Figures 1B and 3, the refrigerant circulates within the fourteenth sub-circuit 111 in the direction indicated by the arrows in Figure 3. The bold black solid line in Figure 1B represents the fourteenth sub-circuit 111. Because the fourth port D and the third port C are connected, the high-temperature, high-pressure refrigerant discharged from the compressor 2 flows through the water tank 8 to the fourth port D. Because the first valve port a and the second valve port b of the first valve 901 are connected, the refrigerant can flow through the third port C of the four-way valve 7 into the first valve port a of the first valve 901 and then through the second valve port b of the first valve 901 into the third heat exchanger 3. The high-temperature, high-pressure refrigerant flows through the third heat exchanger 3, undergoing heat exchange with the outdoor air and converting into low-temperature refrigerant. The outdoor air absorbs the heat released by the high-temperature, high-pressure refrigerant. Because the first valve port a and the second valve port b of the second valve 902 are connected, the refrigerant, after releasing heat, can flow through the second valve 902 into the throttling device 4.

[0098] After the throttling device 4 adjusts the refrigerant flow rate, since the first valve port a and the second valve port b of the third valve 903 are connected, the first part of the refrigerant flows into the second heat exchanger 62 through the third valve 903, and the low-temperature refrigerant in the second heat exchanger 62 performs heat exchange with the indoor air to absorb the heat of the indoor air, thereby lowering the indoor temperature. The second part of the refrigerant flows into the liquid reservoir 5 and can be stored by the liquid reservoir 5. The refrigerant discharged from the liquid reservoir 5 flows into the first heat exchanger 61 from the fourth valve 904, and the low-temperature refrigerant in the first heat exchanger 61 performs heat exchange with the indoor air to absorb the heat of the indoor air, thereby lowering the indoor temperature. Thus, the refrigerant performs heat exchange with the indoor air through the first heat exchanger 61 and the second heat exchanger 62, so that the indoor temperature reaches the fifth preset temperature.

[0099] Because the first valve port a of the seventh valve 907 is connected to the second valve port b of the seventh valve 907, the first valve port a of the sixth valve 906 is connected to the second valve port b of the sixth valve 906, and the first valve port a of the fifth valve 905 is connected to the second valve port b of the fifth valve 905, the refrigerant flowing out of the second heat exchanger 62 flows sequentially through the seventh valve 907, the sixth valve 906, and the fifth valve 905 into the first port E. The refrigerant flowing out of the first heat exchanger 61 flows through the fifth valve 905 into the first port E. Because the first port E is connected to the second port S, the refrigerant flows into the gas-liquid separator 1 through the second port S. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2. Thus, by controlling the valve assembly 9 to the fifteenth state and controlling the third port C and fourth port D of the four-way valve 7 to communicate with each other, the fourteenth sub-circuit 111 is opened, causing the indoor temperature to reach the fifth preset temperature, thereby meeting the cooling demand.

[0100] In some embodiments, as shown in Figures 4 and 5 , the target operating mode is cooling mode, and the first circuit 11 includes a fifteenth sub-circuit 112. The controller 10 is further configured to control the valve assembly 9 to be in a sixteenth state according to the cooling mode, and to control the third port C and the fourth port D of the four-way valve 7 to conduct the fifteenth sub-circuit 112, so that the indoor temperature reaches a fifth preset temperature.

[0101] When the valve assembly 9 is in the sixteenth state, the first valve port a of the second valve 902 is connected to the second valve port b of the second valve 902, the first valve port a of the third valve 903 is connected to the second valve port b of the third valve 903, the first valve port a of the fourth valve 904 is connected to the second valve port b of the fourth valve 904, the first valve port a of the fifth valve 905 is connected to the second valve port b of the fifth valve 905, the first valve port a of the sixth valve 906 is connected to the second valve port b of the sixth valve 906, and the first valve port a of the seventh valve 907 is connected to the second valve port b of the seventh valve 907. The first valve port a of the twelfth valve 912 is connected to the second valve port b of the twelfth valve 912. The first valve port a of the first valve 901 is blocked from the second valve port b of the first valve 901, the first valve port a of the eighth valve 908 is blocked from the second valve port b of the eighth valve 908, and the first valve port a of the ninth valve 909 is blocked from the second valve port b of the ninth valve 909.

[0102] When the second control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 operates in cooling mode. As shown in Figures 4 and 5, the refrigerant circulates in the fifteenth sub-circuit 112 in the direction of the arrow shown in Figure 5. The bold black solid line in Figure 4 is the fifteenth sub-circuit 112. Since the first valve port a of the twelfth valve 912 and the second valve port b of the twelfth valve 912 are connected, the high-temperature and high-pressure refrigerant discharged from the compressor 2 can flow into the third heat exchanger 3 through the twelfth valve 912. The high-temperature and high-pressure refrigerant flows through the third heat exchanger 3 to exchange heat with the outdoor air and is converted into a low-temperature refrigerant. The outdoor air absorbs the heat released by the high-temperature and high-pressure refrigerant. Since the first valve port a and the second valve port b of the second valve 902 are connected, the refrigerant after releasing heat can flow into the throttling device 4 through the second valve 902.

[0103] After the throttling device 4 adjusts the refrigerant flow rate, since the first valve port a and the second valve port b of the third valve 903 are connected, the first part of the refrigerant flows into the second heat exchanger 62 through the third valve 903, and the low-temperature refrigerant in the second heat exchanger 62 performs heat exchange with the indoor air to absorb the heat of the indoor air, thereby lowering the indoor temperature. The second part of the refrigerant flows into the liquid reservoir 5 and can be stored by the liquid reservoir 5. The refrigerant discharged from the liquid reservoir 5 flows into the first heat exchanger 61 from the fourth valve 904, and the low-temperature refrigerant in the first heat exchanger 61 performs heat exchange with the indoor air to absorb the heat of the indoor air, thereby lowering the indoor temperature. Thus, the refrigerant performs heat exchange with the indoor air through the first heat exchanger 61 and the second heat exchanger 62, so that the indoor temperature reaches the fifth preset temperature.

[0104] Because the first valve port a of the seventh valve 907 is connected to the second valve port b of the seventh valve 907, the first valve port a of the sixth valve 906 is connected to the second valve port b of the sixth valve 906, and the first valve port a of the fifth valve 905 is connected to the second valve port b of the fifth valve 905, the refrigerant flowing out of the second heat exchanger 62 flows sequentially through the seventh valve 907, the sixth valve 906, and the fifth valve 905 into the first port E. The refrigerant flowing out of the first heat exchanger 61 flows through the fifth valve 905 into the first port E. Because the first port E is connected to the second port S, the refrigerant can flow into the gas-liquid separator 1 through the second port S. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2. Thus, by controlling the valve assembly 9 to the sixteenth state and controlling the third port C and fourth port D of the four-way valve 7 to open the fifteenth sub-circuit 112, the indoor temperature reaches the fifth preset temperature, thereby meeting the cooling demand.

[0105] It should be noted that although the third port C is connected to the fourth port D, the refrigerant cannot flow to the third heat exchanger 3 through the first valve 901 because the first valve port a and the second valve port b of the first valve 901 are blocked.

[0106] In some embodiments, the target operating mode is heating mode. As shown in Figures 6 and 7 , the first circuit 11 includes a sixteenth sub-circuit 113. The controller 10 is configured to, in accordance with the heating mode, control the valve assembly 9 to the seventeenth state and connect the first port E of the four-way valve 7 to the fourth port D, thereby conducting the sixteenth sub-circuit 113 and causing the indoor temperature to reach a fourth preset temperature. This fourth preset temperature can be set by the user.

[0107] When the valve assembly 9 is in the seventeenth state, the first valve port a of the first valve 901 is in communication with the second valve port b of the first valve 901, the first valve port a of the second valve 902 is in communication with the second valve port b of the second valve 902, the first valve port a of the third valve 903 is in communication with the second valve port b of the third valve 903, the first valve port a of the fourth valve 904 is in communication with the second valve port b of the fourth valve 904, the first valve port a of the sixth valve 906 is in communication with the second valve port b of the sixth valve 906, the first valve port a of the seventh valve 907 is in communication with the second valve port b of the seventh valve 907, the first valve port a of the ninth valve 909 is in communication with the second valve port b of the ninth valve 909. The first valve port a of the fifth valve 905 is blocked from the second valve port b of the fifth valve 905, the first valve port a of the eighth valve 908 is blocked from the second valve port b of the eighth valve 908, and the first valve port a of the twelfth valve 912 is blocked from the second valve port b of the twelfth valve 912.

[0108] It should be noted that although the third port E is connected to the fourth port D, the refrigerant cannot flow to the first heat exchanger 61 through the fifth valve 905 because the first valve port a and the second valve port b of the fifth valve 905 are blocked.

[0109] When the third control command is sent to the air conditioning system 1000, the air conditioning system 1000 operates in heating mode. As shown in Figures 6 and 7, the refrigerant circulates within the sixteenth sub-circuit 113 in the direction indicated by the arrow in Figure 7. The bold black solid line in Figure 6 represents the sixteenth sub-circuit 113. Because the first valve port a of the ninth valve 909 is connected to the second valve port b of the ninth valve 909, the first valve port a of the sixth valve 906 is connected to the second valve port b of the sixth valve 906, and the seventh valve 907 is connected, the high-temperature, high-pressure refrigerant discharged from the compressor 2 flows through the ninth valve 909. A first portion of the refrigerant flows through the seventh valve 907 into the second heat exchanger 62. The high-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor air, releasing heat to the indoor environment, thereby raising the indoor temperature. The low-temperature refrigerant flowing out of the second heat exchanger 62 after heat exchange passes through the third valve 903 and flows into the throttling device 4. The second part of the refrigerant flows into the first heat exchanger 61 through the sixth valve 906. The high-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor air to release heat to the indoor environment, thereby increasing the indoor temperature. The low-temperature refrigerant flowing out of the first heat exchanger 61 after heat exchange flows into the liquid reservoir 5 to be stored. The low-temperature refrigerant discharged from the liquid reservoir 5 flows into the throttling device 4. In this way, the refrigerant exchanges heat with the indoor air through the first heat exchanger 61 and the second heat exchanger 62, so that the indoor temperature reaches the fourth preset temperature.

[0110] Because the first valve port a of the second valve 902 is connected to the second valve port b of the second valve 902, the low-temperature refrigerant passing through the throttling device 4, after the refrigerant flow is regulated, can flow through the second valve 902 into the third heat exchanger 3. The low-temperature refrigerant in the third heat exchanger 3 exchanges heat with the outdoor air to absorb heat from the outdoor environment. Because the first valve port a of the first valve 901 is connected to the second valve port b of the first valve 901, the refrigerant, after absorbing heat, flows through the first valve 901 into the third port C. Because the third port C is connected to the second port S, the refrigerant can flow into the gas-liquid separator 1 through the second port S. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2. In this way, by controlling the valve assembly 9 to be in the seventeenth state and controlling the first port E of the four-way valve 7 to be connected to the fourth port D, the sixteenth sub-circuit 113 is opened, so that the indoor temperature reaches the fourth preset temperature, thereby meeting the heating demand.

[0111] In some embodiments, the target operating mode is a hot water production mode. As shown in FIG9 , the first circuit 11 includes a first sub-circuit 119. The first sub-circuit 119 is formed by sequentially connecting the compressor 2, the water tank 8, the liquid reservoir 5, the throttling device 4, the third heat exchanger 3, the four-way valve 7, the gas-liquid separator 1, and the compressor 2. The refrigerant flows along the first sub-circuit 119.

[0112] In some embodiments, as shown in FIG. 8A , the controller is further configured to perform step 121 and step 122 .

[0113] In step 121 , a target operating mode of the air conditioning system 1000 is obtained.

[0114] The target operation mode includes a hot water production mode.

[0115] In step 122 , the state of the valve assembly 9 and the conduction states between different ports of the four-way valve 7 are controlled according to the target operation mode to adjust the water temperature in the water tank 8 .

[0116] In some embodiments, the controller 10 is further configured to: determine that the target operating mode is the hot water making mode; control the third heat exchanger 3 to start; control the valve assembly 9 to be in the first state and control the first port E and the fourth port D of the four-way valve 7 to be connected.

[0117] When the valve assembly is in the first state, the first valve port a of the first valve 901 is in communication with the second valve port b of the first valve 901, the first valve port a of the second valve 902 is in communication with the second valve port b of the second valve 902, and the first valve port a of the eighth valve 908 is in communication with the second valve port b of the eighth valve 908. The first valve port a of the third valve 903 and the second valve port b of the third valve 903 are blocked, the first valve port a of the fourth valve 904 and the second valve port b of the fourth valve 904 are blocked, the first valve port a of the fifth valve 905 and the second valve port b of the fifth valve 905 are blocked, the first valve port a of the sixth valve 906 and the second valve port b of the sixth valve 906 are blocked, and the first valve port a of the seventh valve 907 and the second valve port b of the seventh valve 907 are blocked.

[0118] When the fourth control instruction is sent to the air conditioning system 1000, the air conditioning system 1000 operates in the hot water production mode. As shown in Figures 8B and 9, the refrigerant circulates within the first sub-circuit 119 in the direction of the arrow shown in Figure 9. The bold black solid line in Figure 8B represents the first sub-circuit 119. Due to the connection between the first valve port a of the eighth valve 908 and the second valve port b of the eighth valve 908, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows through the water tank 8 and then flows to the liquid reservoir 5 through the eighth valve 908. The refrigerant discharged from the liquid reservoir 5 flows through the throttling device 4 for refrigerant flow regulation. Due to the connection between the first valve port a of the second valve 902 and the second valve port b of the second valve 902, the refrigerant flows through the second valve 902 into the third heat exchanger 3. The low-temperature refrigerant in the third heat exchanger 3 exchanges heat with the outdoor environment, and the heat of the low-temperature refrigerant absorbs the heat of the outdoor air. Because the first valve port a of the first valve 901 is connected to the second valve port b of the first valve 901, the refrigerant that has absorbed heat flows through the first valve 901 into the second port S, and then into the gas-liquid separator 1 through the third port C. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2. In this way, by controlling the valve assembly 9 to be in the first state and controlling the first port E and the fourth port D of the four-way valve 7 to be connected, the first sub-circuit 119 is opened to meet the hot water production demand.

[0119] The above description uses the example that the target operating modes include cooling mode, heating mode and hot water making mode respectively. Of course, in some embodiments, the target operating mode also includes multiple collaborative modes, and various collaborative modes in the multiple collaborative modes include a combination of at least two modes among the cooling mode, heating mode and hot water making mode.

[0120] For example, the target operating mode also includes a first collaborative mode, which is a combination of a heating mode and a hot water making mode; the target operating mode also includes a second collaborative mode, which is a combination of a cooling mode and the hot water making mode; the target operating mode also includes a third collaborative mode, which is a combination of a cooling mode, a heating mode and a hot water making mode; the target operating mode includes a fourth collaborative mode; the fourth collaborative mode is a combination of a cooling mode and a heating mode.

[0121] When the target operation mode includes the first cooperative mode, as shown in FIG. 10A , the controller 10 is further configured to execute step 131 and step 132 .

[0122] In step 131 , the target operating mode is determined to be the first collaborative mode.

[0123] In step 132, the valve assembly 9 is opened and closed according to the first cooperative mode control, and the first port E and the fourth port D are controlled to be connected to adjust the indoor temperature and heat the water temperature in the water tank 8 to a first preset temperature.

[0124] In some embodiments, the controller 10 is further configured to: determine a first priority corresponding to the first collaborative mode; the first priority corresponds to the hot water making mode taking precedence over the heating mode; control the first heat exchanger and the second heat exchanger to be closed, and the third heat exchanger to be started; control the valve assembly to be in a first state; obtain the water temperature in the water tank; if it is determined that the water temperature in the water tank reaches the first preset temperature, control the first heat exchanger, the second heat exchanger to be started, and the third heat exchanger to be started; control the valve assembly to be in a second state.

[0125] In the second state, as shown in FIG12 , the first valve 901 , the second valve 902 , the third valve 903 , the fourth valve 904 , the sixth valve 906 , the seventh valve 907 , and the ninth valve 909 are respectively turned on, and the fifth valve 905 is turned off.

[0126] It should be noted that the valve is connected to the first valve port and the second valve port of the valve, and the valve is blocked to the first valve port and the second valve port of the valve.

[0127] When the fifth control instruction is sent to the air conditioning system 1000, the air conditioning system 1000 operates in the first collaborative mode. As shown in Figures 10B and 11, the refrigerant circulates within the first sub-circuit 119 in the direction of the arrow shown in Figure 11. The bold black solid line in Figure 10B represents the first sub-circuit 119. Due to the connection between the first valve port a of the eighth valve 908 and the second valve port b of the eighth valve 908, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows through the water tank 8 and then flows to the liquid reservoir 5 through the eighth valve 908. The refrigerant discharged from the liquid reservoir 5 flows through the throttling device 4 for refrigerant flow regulation. Due to the connection between the first valve port a of the second valve 902 and the second valve port b of the second valve 902, the refrigerant flows through the second valve 902 into the third heat exchanger 3. The low-temperature refrigerant in the third heat exchanger 3 exchanges heat with the outdoor environment, and the heat of the low-temperature refrigerant absorbs the heat of the outdoor air.

[0128] Since the first valve port a of the first valve 901 and the second valve port b of the first valve 901 are connected, the refrigerant after absorbing heat flows into the second port S through the first valve 901, and then flows into the gas-liquid separator 1 through the third port C. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant so that the gaseous refrigerant enters the compressor 2.

[0129] As shown in Figures 10B to 13, the first circuit 11 further includes a second sub-circuit 120 and a third sub-circuit 121. The second sub-circuit 120 is formed by sequentially connecting the compressor 2, the first heat exchanger 61, the liquid reservoir 5, the throttling device 4, the third heat exchanger 3, the four-way valve 7, the gas-liquid separator 1, and the compressor 2. The third sub-circuit 121 is formed by sequentially connecting the compressor 2, the second heat exchanger 62, the throttling device 4, the third heat exchanger 3, the four-way valve 7, the gas-liquid separator 1, and the compressor 2.

[0130] When the air conditioning system 1000 is in the hot water mode, the controller 10 is further configured to obtain the water temperature of the water tank 8 and determine whether the water temperature reaches a first preset temperature. If the water temperature reaches the first preset temperature, the air conditioning system 1000 is controlled to operate in the heating mode.

[0131] As shown in Figures 12 and 13, when air conditioning system 1000 is operating in heating mode, the refrigerant circulates within second sub-circuit 120 and third sub-circuit 121 in the directions indicated by the arrows in Figure 13. The bold black solid lines in Figure 12 represent second sub-circuit 120 and third sub-circuit 121. After the high-temperature, high-pressure refrigerant discharged from compressor 2 passes through ninth valve 909, a first portion of the refrigerant can flow through second sub-circuit 120, and a second portion of the refrigerant can flow through third sub-circuit 121.

[0132] It should be noted that the refrigerant first flows along the first sub-circuit 119 , and then flows along the third sub-circuit 121 and the second sub-circuit 120 respectively.

[0133] The foregoing mainly describes the first collaborative mode by taking the example that the hot water making mode takes precedence over the heating mode. Of course, in some embodiments, the heating mode may take precedence over the hot water making mode.

[0134] In some embodiments, the controller 10 is further configured to: determine a second priority corresponding to the first collaborative mode; the second priority corresponds to the heating mode taking precedence over the hot water mode; control the first heat exchanger 61, the second heat exchanger 62 to start and the third heat exchanger 3 to start; control the valve assembly 9 to be in the second state; obtain the indoor temperature; if it is determined that the indoor temperature reaches the second preset temperature, control the first heat exchanger 61 and the second heat exchanger 62 to be closed, and the third heat exchanger 3 to start; control the valve assembly 9 to be in the first state to adjust the water temperature in the water tank 8 to the first preset temperature.

[0135] When the sixth control command is sent to air conditioning system 1000, air conditioning system 1000 operates in the first cooperative mode. As shown in Figures 12 and 13, when air conditioning system 1000 operates in heating mode, the refrigerant circulates within second sub-circuit 120 and third sub-circuit 121 in the directions indicated by the arrows in Figure 13. The bold black solid lines in Figure 12 represent second sub-circuit 120 and third sub-circuit 121.

[0136] When the indoor temperature reaches the second set temperature, as shown in Figures 10B and 11, the refrigerant circulates within the first sub-circuit 119 in the direction of the arrow shown in Figure 11. The bold black solid line in Figure 10B represents the first sub-circuit 119. Due to the connection between the first valve port a of the eighth valve 908 and the second valve port b of the eighth valve 908, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows through the water tank 8 and then flows to the liquid reservoir 5 through the eighth valve 908. The refrigerant discharged from the liquid reservoir 5 flows through the throttling device 4 for refrigerant flow regulation. Due to the connection between the first valve port a of the second valve 902 and the second valve port b of the second valve 902, the refrigerant flows through the second valve 902 into the third heat exchanger 3. The low-temperature refrigerant in the third heat exchanger 3 exchanges heat with the outdoor environment, and the heat of the low-temperature refrigerant absorbs heat from the outdoor air.

[0137] After determining that the indoor temperature reaches the second preset temperature, after the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows through the ninth valve 909, the first part of the refrigerant can flow along the second sub-circuit 120, and the second part of the refrigerant can flow along the third sub-circuit 121.

[0138] It should be noted that the refrigerant first flows along the second sub-circuit 120 and the third sub-circuit 121 , and then flows along the first sub-circuit 119 .

[0139] The above description uses the example that the hot water making mode takes precedence over the heating mode and the heating mode takes precedence over the hot water making mode. Of course, in some embodiments, the hot water making mode and the heating mode may also be operated synchronously.

[0140] For example, as shown in FIG. 14 , when the hot water mode and the heating mode are operated synchronously, the refrigerant flows along the first sub-circuit 119 , the second sub-circuit 120 , and the third sub-circuit 121 , respectively.

[0141] In some embodiments, the controller 10 is further configured to: determine a third priority order corresponding to the first collaborative mode; the third priority order corresponds to the synchronous operation of the hot water mode and the heating mode.

[0142] In some embodiments, the controller 10 is further configured to: control the start-up of the first heat exchanger 61, the second heat exchanger 62 and the start-up of the third heat exchanger 3; control the valve assembly 9 to be in a third state; in the third state, the first valve 901, the second valve 902, the third valve 903, the fourth valve 904, the sixth valve 906, the seventh valve 907, the eighth valve 908 and the ninth valve 909 are respectively turned on, and the fifth valve 905 is turned off.

[0143] When the seventh control command is sent to air conditioning system 1000, air conditioning system 1000 operates in the first collaborative mode. As shown in FIG14 , the refrigerant circulates within first sub-circuit 119, second sub-circuit 120, and third sub-circuit 121 in the directions indicated by the arrows in FIG14 . The bold black solid lines in FIG14 represent first sub-circuit 119, second sub-circuit 120, and third sub-circuit 121.

[0144] It should be noted that the flow principle of the refrigerant here can be referred to the description in Figures 10B to 13 above, and will not be repeated here.

[0145] The foregoing mainly illustrates the case where the hot water making mode and the heating mode are respectively operated, and the refrigerant flows along the first sub-circuit 119, the second sub-circuit 120 and the third sub-circuit 121 as an example. Of course, in some embodiments, when the hot water making mode and the heating mode are operated synchronously, the refrigerant can also flow along other circuits.

[0146] For example, as shown in Figure 15, the first circuit 11 includes a third sub-circuit 121 and a fourth sub-circuit 122. The fourth sub-circuit 122 is formed by sequentially connecting the compressor 2, the water tank 8, the four-way valve 7, the first heat exchanger 61, the liquid reservoir 5, the throttling device 4, the third heat exchanger 3, the four-way valve 7, the gas-liquid separator 1, and the compressor 2.

[0147] In some embodiments, the controller 10 is also configured to: control the start-up of the first heat exchanger 61, the second heat exchanger 62 and the start-up of the third heat exchanger 3; control the valve assembly to be in a fourth state; in the fourth state, the first valve 901, the second valve 902, the third valve 903, the fourth valve 904, the fifth valve 905, the seventh valve 907 and the ninth valve 909 of the valve assembly 9 are respectively in the on state, and the sixth valve 906 and the eighth valve 908 of the valve assembly 9 are in the off state.

[0148] It should be noted that the refrigerant flows along the third sub-circuit 121 and the fourth sub-circuit 122 respectively.

[0149] When the eighth control command is sent to air conditioning system 1000, air conditioning system 1000 operates in the first coordinated mode. As shown in FIG15 , the refrigerant circulates within third sub-circuit 121 and fourth sub-circuit 122 in the directions indicated by the arrows in FIG15 . The bold black solid lines in FIG15 represent third sub-circuit 121 and fourth sub-circuit 122. A first portion of the high-temperature, high-pressure refrigerant discharged from compressor 2 flows along fourth sub-circuit 122. This first portion first exchanges heat with water in water tank 8 to produce hot water and form low-temperature refrigerant. This low-temperature refrigerant then passes through first heat exchanger 61, throttling device 4, third heat exchanger 3, four-way valve 7, and gas-liquid separator 1 before returning to compressor 2. A second portion of the high-temperature, high-pressure refrigerant discharged from compressor 2 flows along third sub-circuit 121. This allows for both the hot water production mode and the heating mode, effectively reducing energy waste and environmental thermal pollution during operation of air conditioning system 1000.

[0150] The above description uses the example of the refrigerant flowing along the third sub-circuit and the fourth sub-circuit respectively when the hot water making mode and the heating mode are respectively operated. Of course, in some embodiments, when the hot water making mode and the heating mode are synchronized, the refrigerant can also flow only along the fourth sub-circuit 122.

[0151] It should be noted that in Figure 14, the first heat exchanger 61 and the second heat exchanger 62 are activated to respectively implement the cooling mode and the hot water mode. Of course, in some embodiments, the hot water mode and the heating mode can also be implemented by activating one of the first heat exchanger 61 and the second heat exchanger 62 and deactivating the other.

[0152] For example, as shown in Figure 16, the first circuit 11 includes a fourth sub-circuit 122. The fourth sub-circuit 122 is formed by the compressor 2, the water tank 8, the four-way valve 7, the first heat exchanger 61, the liquid reservoir 5, the throttling device 4, the third heat exchanger 3, the four-way valve 7, the separator 1, and the compressor 2, which are connected in sequence. The refrigerant flows along the fourth sub-circuit 122.

[0153] In some embodiments, the controller 10 is also configured to control: the first heat exchanger 61 is started, the second heat exchanger 62 is closed, and the third heat exchanger 3 is started; the control valve assembly 9 is in a fifth state; in the fifth state, the first valve 901, the second valve 902, the fourth valve 904 and the fifth valve 905 of the valve assembly 9 are respectively in the on state, and the third valve 903, the sixth valve 906, the seventh valve 907, the eighth valve 908 and the ninth valve 909 of the valve assembly 9 are in the off state.

[0154] When the ninth control instruction is sent to the air conditioning system 1000, the air conditioning system 1000 operates in the first collaborative mode. As shown in FIG16 , the bold black solid line in FIG16 represents the fourth sub-circuit 122. After the high-temperature, high-pressure refrigerant discharged from the compressor 2 exchanges heat with the water in the water tank 8, although the temperature of the high-temperature refrigerant has decreased, it can still be considered to be relatively high. This high-temperature refrigerant passes through the fourth end D and the first end E of the four-way valve, and then through the first heat exchanger 61 to exchange heat with the indoor air, releasing heat to the indoor environment. Afterwards, the refrigerant passes through the throttling device 4 and the third heat exchanger 3, and exchanges heat with the outdoor air to absorb heat from the outdoor air. The refrigerant that has absorbed excess heat flows back to the compressor 2 through the four-way valve 7 and the gas-liquid separator 1. In this way, the hot water heating mode and the heating mode can also be achieved separately.

[0155] FIG16 takes the start-up of the first heat exchanger 61 as an example, and the refrigerant flowing along one sub-circuit (e.g., the fourth sub-circuit 122) as an example for explanation. Of course, in some embodiments, when the first heat exchanger 61 is started, the refrigerant can also flow along two sub-circuits.

[0156] For example, as shown in Figure 17, when the first circuit 11 includes a first sub-circuit 119 and a second sub-circuit 120, the controller 10 is further configured to control the first heat exchanger 61 to be activated, the second heat exchanger 62 to be deactivated, and the third heat exchanger 3 to be activated. The valve assembly 9 is controlled to be in a sixth state. In this sixth state, the first valve 901, the second valve 902, the fourth valve 904, the sixth valve 906, the eighth valve 908, and the ninth valve 909 of the valve assembly 9 are respectively in an open state, and the third valve 903, the fifth valve 905, and the seventh valve 907 of the valve assembly 9 are in an open state. It should be noted that the refrigerant flows along the first sub-circuit 119 and the second sub-circuit 120 respectively.

[0157] When the tenth control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 operates in the first cooperative mode. As shown in FIG17 , the bold black solid lines in FIG17 represent the first sub-circuit 119 and the second sub-circuit 120. The first portion of the high-temperature, high-pressure refrigerant discharged from the compressor 2 flows into the water tank 8. When the high-temperature, high-pressure refrigerant flows to the water tank 8, it exchanges heat with the water tank 8 to release heat to the water tank 8. The water tank 8 uses the refrigerant to heat the water in the water tank 8. The refrigerant after releasing heat is connected between the first valve port a and the second valve port b of the ninth valve 909, and then flows into the liquid reservoir 5 through the ninth valve 909 to be stored. The refrigerant discharged from the liquid reservoir 5 flows to the throttling device 4.

[0158] Since the first valve port a and the second valve port b of the sixth valve 906 and the eighth valve 908 are connected, the second part of the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the eighth valve 908, and then flows from the eighth valve 908 into the sixth valve 906, and flows into the first heat exchanger 61 through the sixth valve 906. The high-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant after heat exchange flows into the liquid reservoir 5 to be stored, and the refrigerant discharged from the liquid reservoir 5 flows into the throttling device 4, flows through the throttling device 4, and then flows into the throttling device 4. After the flow of the refrigerant in position 4 is adjusted and connected to the first valve port a and the second valve port b of the second valve 902, it flows into the third heat exchanger 3 through the second valve 902. The third heat exchanger 3 exchanges heat between the low-temperature refrigerant and the outdoor environment. The refrigerant after absorbing heat flows into the second port S of the four-way valve 7 under the conduction of the first valve port a and the second valve port b of the first valve 901, and then flows into the gas-liquid separator 1 through the third port C of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant so that the gaseous refrigerant enters the compressor 2.

[0159] The above description uses the example of the controller 10 controlling the first heat exchanger 61 to start and the second heat exchanger 62 to shut down. Of course, in some embodiments, the controller 10 can also control the first heat exchanger 61 to shut down and the second heat exchanger 62 to start.

[0160] It should be noted that either the first heat exchanger 61 or the second heat exchanger 62 can be located in the indoor unit 100, while the other can be located in the outdoor unit 200. Alternatively, the first heat exchanger 61 and the second heat exchanger 62 can be located in different indoor spaces. In this way, one indoor space can be selected for heating as needed.

[0161] For example, as shown in Figure 18, the first circuit 11 includes a first sub-circuit 119 and a third sub-circuit 121. The controller 10 is further configured to control the first heat exchanger 61 to be closed, the second heat exchanger 62 to be open, and the third heat exchanger 3 to be activated. The control valve assembly 9 is in a seventh state; in this seventh state, the first valve 901, the second valve 902, the third valve 903, the sixth valve 906, the seventh valve 907, the eighth valve 908, and the ninth valve 909 of the valve assembly 9 are respectively in an open state, and the fourth valve 904 and the fifth valve 905 of the valve assembly 9 are in an open state.

[0162] It should be noted that the refrigerant flows along the first sub-circuit 119 and the third sub-circuit 121 respectively.

[0163] When the eleventh control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 operates in the first cooperative mode. As shown in FIG18 , the bold black solid lines in FIG18 represent the first sub-circuit 119 and the third sub-circuit 121. The first portion of the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the water tank 8. When the high-temperature and high-pressure refrigerant flows to the water tank 8, it exchanges heat with the water tank 8 to release heat to the water tank 8. The water tank 8 uses the refrigerant to heat the water in the water tank 8. The refrigerant after releasing heat is connected to the first valve port a and the second valve port b of the ninth valve 909, and flows into the liquid reservoir 5 through the ninth valve 909 to be stored. The refrigerant discharged from the liquid reservoir 5 flows to the throttling device 4.

[0164] Since the ninth valve 909 and the seventh valve 907 are connected, the second portion of high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the ninth valve 909, then flows from the ninth valve 909 into the seventh valve 907, and flows into the second heat exchanger 62 through the seventh valve 907. The high-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. Since the third valve 903 and the second valve 902 are connected, the refrigerant after heat exchange flows through the third valve 903 to the throttling device 4. The refrigerant flowing through the throttling device 4 is flow-regulated and then flows into the third heat exchanger 3 through the second valve 902. The third heat exchanger 3 exchanges heat with the low-temperature refrigerant with the outdoor environment. The refrigerant after absorbing heat flows into the second port S of the four-way valve 7 under the connection between the first valve port a and the second valve port b of the first valve 901, and then flows into the gas-liquid separator 1 through the third port C of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2.

[0165] In some embodiments of the present disclosure, the first collaborative mode is achieved by controlling the valve assembly 9 to be in different states and controlling the first port E of the four-way valve 7 to be connected to the fourth port D, and the air-conditioning system 1000 produces hot water by operating in the heating mode, which can effectively reduce energy waste during the operation of the air-conditioning system 1000, reduce environmental thermal pollution, and save users a lot of electricity bills.

[0166] The above description is made by taking the case where the target operation mode includes the first collaborative mode as an example. Of course, the target operation mode may also include the second collaborative mode.

[0167] In some embodiments, as shown in FIG. 19A , the controller 10 is further configured to perform steps 141 and 142 .

[0168] In step 141 , the target operating mode is determined to be the second collaborative mode.

[0169] In step 142, the valve assembly 9 is opened and closed according to the second cooperative mode control, and the third port C and the fourth port D of the four-way valve 7 are connected to adjust the indoor temperature and the water temperature in the water tank 8 to a third preset temperature.

[0170] In some embodiments, the controller 10 is further configured to: control the first heat exchanger 61 to start, the second heat exchanger 62 to start, and the third heat exchanger to start; and control the valve assembly to be in a seventh state. In the seventh state, the first valve 901, the second valve 902, the third valve 903, the fourth valve 904, the fifth valve 905, the sixth valve 906, the seventh valve 907, and the eighth valve 908 are respectively open.

[0171] As shown in Figure 19B, the first circuit 11 includes a fifth sub-circuit 123, a sixth sub-circuit 124, and a seventh sub-circuit 125. The fifth sub-circuit 123 is formed by the compressor 2, the water tank 8, the liquid accumulator 5, the first heat exchanger 61, the four-way valve 7, the gas-liquid separator 1, and the compressor 2, which are connected in sequence. The sixth sub-circuit 124 is formed by the compressor 2, the water tank 8, the four-way valve 7, the third heat exchanger 3, the throttling device 4, the second heat exchanger 62, the four-way valve 7, the separator 1, and the compressor, which are connected in sequence. The seventh sub-circuit 125 is formed by the compressor 2, the water tank 8, the four-way valve 7, the third heat exchanger 3, the throttling device 4, the liquid accumulator 5, the first heat exchanger 61, the four-way valve 7, the gas-liquid separator 1, and the compressor 2, which are connected in sequence. The refrigerant flows through the fifth sub-circuit 123, the sixth sub-circuit 124, and the seventh sub-circuit 125, respectively.

[0172] When the twelfth control instruction is sent to the air conditioning system 1000, the air conditioning system 1000 operates in the second cooperative mode. As shown in FIG19B , the bold black solid lines in FIG19B represent the fifth sub-loop 123, the sixth sub-loop 124, and the seventh sub-loop 125. The high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the water tank 8 and then flows to the fourth port D of the four-way valve 7. Since the first valve port a and the second valve port b of the first valve 901 are connected, the refrigerant can flow into the first valve port a of the first valve 901 through the third port C of the four-way valve 7, and flow into the third heat exchanger 3 through the second valve port b of the first valve 901. The third heat exchanger 3 exchanges heat between the high-temperature and high-pressure refrigerant and the outdoor air. The outdoor air absorbs the heat of the high-temperature and high-pressure refrigerant to release heat to the outdoor environment. Since the first valve port a and the second valve port b of the second valve 902 are connected, the refrigerant after releasing the heat can flow into the throttling device 4 through the second valve 902 to adjust the refrigerant flow. Since the first valve port a and the second valve port b of the third valve 903 are connected, a part of the refrigerant flows into the second heat exchanger 62 through the third valve 903. The low-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature.

[0173] Because the first valve port a and the second valve port b of the seventh valve 907, the sixth valve 906, and the fifth valve 905 are connected, the refrigerant flowing out of the second heat exchanger 62 after heat exchange passes through the seventh valve 907, the sixth valve 906, and the fifth valve 905 in sequence and flows into the first port E of the four-way valve 7. Then, it flows through the second port S of the four-way valve 7 and flows into the gas-liquid separator 1. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2. Another portion of the refrigerant flows into the liquid accumulator 5 for storage. The refrigerant discharged from the liquid accumulator 5 flows through the fourth valve 904 into the first heat exchanger 61. The low-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to absorb indoor heat, thereby lowering the indoor temperature. The refrigerant flowing out of the first heat exchanger after heat exchange passes through the fifth valve 905 and flows into the first port of the four-way valve 7. Then, it flows through the second port S of the four-way valve 7 and flows into the gas-liquid separator 1. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, allowing the gaseous refrigerant to enter the compressor 2.

[0174] In this way, the cooling mode and the hot water making mode can be realized, and the air conditioning system 1000 produces hot water by running the cooling mode, which can effectively reduce the energy waste during the operation of the air conditioning system 1000, reduce environmental thermal pollution, and save users a lot of electricity bills.

[0175] The second coordinated mode is described above using the example of the controller 10 controlling the activation of the first heat exchanger 61 and the activation of the second heat exchanger 62. Of course, in some embodiments, the controller 10 may control only one of the first heat exchanger 61 and the second heat exchanger 62 to activate to achieve the second coordinated mode. For example, the controller 10 controls the first heat exchanger 61 to activate and the second heat exchanger 62 to deactivate.

[0176] As shown in Figure 20 , the first circuit 11 includes only the fifth sub-circuit 123 and the seventh sub-circuit 125. The controller 10 is further configured to activate the first heat exchanger 61, deactivate the second heat exchanger 62, and activate the third heat exchanger 3. The valve assembly is controlled to be in the eighth state. In the eighth state, the first valve 901, the second valve 902, the fourth valve 904, the fifth valve 905, and the eighth valve 908 are all open, while the third valve 903, the sixth valve 906, and the seventh valve 907 are all closed.

[0177] When the thirteenth control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 runs the second collaborative mode. As shown in FIG20, the bold black solid lines in FIG20 are the fifth sub-circuit 123 and the seventh sub-circuit 125. When the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the domestic water tank 8, it exchanges heat with the domestic water tank 8 to release heat to the domestic water tank 8. The water tank 8 uses the refrigerant to heat the water in the water tank 8. After releasing the heat, the first part of the refrigerant flows into the liquid reservoir 5 through the eighth valve 908 under the connection between the first valve port a and the second valve port b of the eighth valve 908 and is stored. The second part of the refrigerant discharged from the water tank 8 flows into the third heat exchanger 3 through the fourth port D, the third port C and the first valve 901 of the four-way valve 7. The third heat exchanger 3 exchanges heat between the high-temperature refrigerant and the outdoor environment. The high-temperature refrigerant releases heat to the outdoor environment. The refrigerant after releasing the heat passes through the fourth port D, the third port C and the first valve 901 of the four-way valve 7. The refrigerant flows into the throttling device 4 through the second valve 902 for refrigerant flow regulation and is then stored in the liquid reservoir 5. The low-temperature refrigerant discharged from the liquid reservoir 5 flows into the first heat exchanger 61 from the fourth valve 904. The low-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to absorb indoor heat, thereby lowering the indoor temperature. The refrigerant after heat exchange flowing out of the first heat exchanger 61 flows into the first port E of the four-way valve 7 through the first valve port a and the second valve port b of the fifth valve 905, and then flows into the gas-liquid separator 1 through the second port S of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant so that the gaseous refrigerant enters the compressor 2.

[0178] The second collaborative mode is described above by taking the example of the controller 10 controlling the first heat exchanger 61 to start and the second heat exchanger 62 to shut down. Of course, in some embodiments, the controller 10 can also control the first heat exchanger 61 to shut down and the second heat exchanger 62 to start.

[0179] For example, as shown in Figure 21, the first circuit 11 includes a sixth sub-circuit 124. The refrigerant flows along the sixth sub-circuit 124. The controller 10 is further configured to: control the first heat exchanger 61 to be off, the second heat exchanger 62 to be on, and the third heat exchanger 3 to be on; and control the valve assembly 9 to be in a ninth state; in the ninth state, the first valve 901, the second valve 902, the third valve 903, the fifth valve 905, the sixth valve 906, and the seventh valve 907 are all open, and the fourth valve 904 is closed.

[0180] When the thirteenth control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 operates in the first cooperative mode, and the refrigerant circulates in the sixth sub-circuit 124 in the direction of the arrow shown in FIG21. The bold black solid line in FIG21 represents the sixth sub-circuit 124. When the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the water tank 8, it exchanges heat with the water tank 8 to release heat to the water tank 8. The water tank 8 uses the refrigerant to heat the water in the water tank 8. The refrigerant after releasing heat flows into the third heat exchanger 3 through the fourth port D of the four-way valve 7, the third port C of the four-way valve 7, and the first valve 901. The third heat exchanger 3 exchanges heat between the high-temperature refrigerant and the outdoor environment, and the high-temperature refrigerant releases heat to the outdoor environment. The refrigerant after releasing heat flows into the throttling device 4 through the second valve 902. After the refrigerant flow is regulated by the throttling device 4, it flows into the third heat exchanger 3 through the third valve 903. Second heat exchanger 62, the low-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature. Due to the connection between the first valve port a and the second valve port b of the seventh valve 907, the sixth valve 906 and the fifth valve 905, the refrigerant after heat exchange flowing out of the second heat exchanger 62 passes through the seventh valve 907, the sixth valve 906 and the fifth valve 905 in sequence and flows into the first port E of the four-way valve 7, and then flows into the gas-liquid separator 1 through the second port S of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant so that the gaseous refrigerant enters the compressor 2.

[0181] In some embodiments of the present disclosure, the second collaborative mode is achieved by controlling the valve assembly 9 to be in different states and controlling the third port C and the fourth port D of the four-way valve 7 to be connected, and the air-conditioning system 1000 produces hot water by running the cooling mode, which can effectively reduce the energy waste during the operation of the air-conditioning system 1000, reduce environmental thermal pollution, and save a lot of electricity bills for users.

[0182] The above description is made by taking the case where the target operation mode includes the first collaborative mode or the second collaborative mode as an example. Of course, the target operation mode may also include the third collaborative mode.

[0183] In some embodiments, as shown in FIG. 22A , the controller 10 is further configured to perform steps 151 and 152 .

[0184] In step 151 , the target operating mode is determined to be the third collaborative mode.

[0185] In step 152 , the valve assembly 9 is opened and closed and the third port C and the fourth port D of the four-way valve 7 are connected according to the third cooperative mode to adjust the indoor temperature and the water temperature in the water tank 8 .

[0186] 22B , the valve assembly 9 further comprises a tenth valve 910 , wherein a first valve port a of the tenth valve 910 is connected to the second end of the second heat exchanger 62 , and a second valve port b of the tenth valve 910 is connected to a second valve port b of the first valve 901 .

[0187] 22B , the valve assembly 9 further includes an eleventh valve 911 . A first valve port a of the eleventh valve 911 is connected to the first end of the second heat exchanger 62 , and a second valve port b of the eleventh valve 911 is connected to the second end of the throttling device 4 .

[0188] In some embodiments, the target heat exchanger 30 includes a first heat exchanger 61 and a second heat exchanger 62. The controller 10 is further configured to: control the first heat exchanger 61 to start, the second heat exchanger 62 to start, and control the valve assembly 9 to be in a tenth state; in the tenth state, the first valve 901, the fourth valve 904, the fifth valve 905, the seventh valve 907, the ninth valve 909, the tenth valve 910, and the eleventh valve 911 are respectively opened, and the second valve 902, the third valve 903, and the sixth valve 906 are closed.

[0189] It should be noted that the second heat exchanger 62 is a condenser, and the first heat exchanger 61 is an evaporator.

[0190] In some embodiments, as shown in FIG22B , the first circuit 11 further includes an eighth sub-circuit 126. The eighth sub-circuit 126 is formed by sequentially connecting the compressor 2, the water tank 8, the four-way valve 7, the second heat exchanger 62, the throttling device 4, the liquid reservoir 5, the first heat exchanger 61, the four-way valve 7, the gas-liquid separator 1, and the compressor 2.

[0191] In some embodiments, as shown in FIG22B , the first circuit 11 further includes a ninth sub-circuit 127. The ninth sub-circuit 127 is formed by sequentially connecting the compressor 2, the second heat exchanger 62, the throttling device 4, the liquid reservoir 5, the first heat exchanger 61, the four-way valve 7, the gas-liquid separator 1, and the compressor 2.

[0192] It should be noted that the refrigerant flows along the eighth sub-circuit 126 and the ninth sub-circuit 127 respectively.

[0193] When the fourteenth control command is sent to air conditioning system 1000 and air conditioning system 1000 operates in the third coordinated mode, the refrigerant circulates within eighth and ninth sub-circuits 126 and 127 in the directions indicated by the arrows in FIG22B . The bold black solid lines in FIG22B represent eighth and ninth sub-circuits 126 and 127. The first portion of high-temperature, high-pressure refrigerant discharged from compressor 2 flows into water tank 8, undergoing heat exchange with the water tank 8 and releasing heat thereto. Water tank 8 uses the refrigerant to heat the water within. The refrigerant, having released heat, flows into fourth port D of four-way valve 7, then through third port C of four-way valve 7 into first valve 901. Through the connection between first port a and second port b of first valve 901, it flows into tenth valve 910. Through the connection between first port a and second port b of tenth valve 910, it flows into second heat exchanger 62.

[0194] Since the ninth valve 909 and the seventh valve 907 are connected respectively, the second part of the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the second heat exchanger 62 through the ninth valve 909 and the seventh valve 907. The high-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor air to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of the second heat exchanger 62 after heat exchange passes through the eleventh valve 911 in turn and flows into the throttling device 4 for refrigerant flow regulation before flowing into the liquid reservoir 5. The refrigerant discharged from the liquid reservoir 5 passes through the fourth valve 904 flows into the first heat exchanger 61, and the low-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature. The refrigerant after heat exchange flowing out of the first heat exchanger 61 is connected with the first valve port a and the second valve port b of the fifth valve 905, and flows into the first port E of the four-way valve 7 through the fifth valve 905, and then flows into the gas-liquid separator 1 through the second port S of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant to allow the gaseous refrigerant to enter the compressor 2.

[0195] FIG22B illustrates an example in which the second heat exchanger 62 is a condenser and the first heat exchanger 61 is an evaporator. Of course, in some embodiments, the second heat exchanger 62 may be an evaporator and the first heat exchanger 61 may be a condenser to achieve a third collaborative mode.

[0196] For example, as shown in Figure 23, the first circuit 11 includes a tenth sub-circuit 128. The tenth sub-circuit 128 is formed by the compressor 2, the water tank 8, the four-way valve 7, the first heat exchanger 61, the liquid reservoir 5, the throttling device 4, the second heat exchanger 62, the four-way valve 7, the gas-liquid separator 1, and the compressor 2, which are connected in sequence. The refrigerant flows along the tenth sub-circuit 128. The controller is further configured to: activate the first heat exchanger 61 and the second heat exchanger 62; and control the valve assembly 9 to an eleventh state. In this eleventh state, the first valve 901, the fourth valve 904, the fifth valve 905, the tenth valve 910, and the eleventh valve 911 are respectively open, while the second valve 902, the third valve 903, the sixth valve 906, the seventh valve 907, and the ninth valve 909 are closed.

[0197] When the fifteenth control command is sent to air conditioning system 1000 and air conditioning system 1000 operates in the third coordinated mode, the refrigerant circulates within the tenth sub-circuit in the direction of the arrows shown in FIG23 . The bold black solid line in FIG23 represents the tenth sub-circuit. The high-temperature, high-pressure refrigerant discharged from compressor 2 flows into water tank 8 , exchanging heat with the refrigerant to release heat to the water tank 8 . Water tank 8 uses the refrigerant to heat the water within the water tank 8 . The refrigerant, after releasing heat, then flows to fourth port D of four-way valve 7 , flows through first port E of four-way valve 7 , and flows into fifth valve 905 . Through first port a and second port b of fifth valve 905 , it flows into first heat exchanger 61 . Within first heat exchanger 61 , the high-temperature refrigerant exchanges heat with the indoor air, releasing heat to the indoor environment, thereby raising the indoor temperature. The refrigerant, after heat exchange, flows from first heat exchanger 61 and is stored in accumulator 5 . The refrigerant discharged from accumulator 5 flows into throttling device 4 .

[0198] After the refrigerant flow is regulated by the throttling device 4, the first valve port a and the second valve port b of the eleventh valve 911 are connected, and the refrigerant flows into the second heat exchanger 62 through the eleventh valve 911. The low-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor air to absorb indoor heat, thereby lowering the indoor temperature. Since the tenth valve 910 and the first valve port a and the second valve port b of the first valve 901 are connected, the refrigerant after heat exchange flowing out of the second heat exchanger 62 flows into the first valve 901 through the tenth valve 910, and then flows into the third port C of the four-way valve 7 through the first valve 901, and flows into the gas-liquid separator 1 through the second port S of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant so that the gaseous refrigerant enters the compressor 2.

[0199] In some embodiments of the present disclosure, by controlling the valve assembly 9 to be in different states and controlling the third port C and the fourth port D of the four-way valve 7 to be connected, a third collaborative mode is realized, and the simultaneous hot water production, heating and cooling functions are realized. The air-conditioning system 1000 produces hot water by running the cooling mode and the heating mode, which can effectively reduce the energy waste during the operation of the air-conditioning system 1000, reduce environmental thermal pollution, and save a lot of electricity bills for users.

[0200] The above description is made by taking the case where the target operation mode includes the first collaborative mode, the second collaborative mode or the third collaborative mode as an example. Of course, the target operation mode may also include the fourth collaborative mode.

[0201] In some embodiments, as shown in FIG. 24A , the controller 10 is further configured to execute steps 161 to 163 .

[0202] In step 161 , a target operating mode of the air-conditioning system is obtained.

[0203] The target operation mode includes a fourth coordinated mode; the fourth coordinated mode includes a heating mode and a cooling mode;

[0204] In step 162 , the target operating mode is determined to be the fourth collaborative mode.

[0205] In step 163, according to the opening and closing of the valve assembly 9 and the connection between the third port C and the fourth port D of the four-way valve 7, one of the first heat exchanger 61 and the second heat exchanger 62 is adjusted to be a condenser and the other to be an evaporator.

[0206] In some embodiments, the first heat exchanger 61 is configured to exchange heat with the first indoor air.

[0207] In some embodiments, the second heat exchanger 62 is configured to exchange heat with the second indoor air.

[0208] It should be noted that the first heat exchanger 61 and the second heat exchanger 62 are disposed in different spaces.

[0209] 24B , the air conditioning system 1000 further includes a second loop 118. The refrigerant flows through the second loop 118 so as to perform heat exchange with the first indoor air and the second indoor air, respectively.

[0210] In some embodiments, the valve assembly 9 is disposed in the second circuit 118 , and the valve assembly 9 is further configured to open or close the second circuit 118 .

[0211] In some embodiments, the controller 10 is further configured to: control the first heat exchanger 61 to start, the second heat exchanger 62 to start, and control the valve assembly 9 to be in a twelfth state. In the twelfth state, the fourth valve 904, the fifth valve 905, the seventh valve 907, the ninth valve 909, and the eleventh valve 911 are respectively opened, and the first valve 901, the second valve 902, the third valve 903, and the sixth valve 906 are respectively closed.

[0212] As shown in Figure 24B, second circuit 118 includes an eleventh sub-circuit 129. Eleventh sub-circuit 129 is formed by sequentially connecting compressor 2, second heat exchanger 62, throttling device 4, liquid reservoir 5, first heat exchanger 61, gas-liquid separator 1, and compressor 2. The compressor 2 and second heat exchanger 62 are connected via the ninth valve 909 and the seventh valve 907.

[0213] When the sixteenth control instruction is sent to the air-conditioning system 1000, when the air-conditioning system 1000 operates in the fourth cooperative mode, the refrigerant circulates in the eleventh sub-circuit in the direction of the arrow shown in Figure 24B. The bold black solid line in Figure 24B is the eleventh sub-circuit. Since the ninth valve 909 and the seventh valve 907 are connected respectively, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the second heat exchanger 62 through the ninth valve 909 and the seventh valve 907. The high-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of the second heat exchanger 62 after heat exchange passes through the eleventh valve 911 in sequence and flows into the throttling device 4. After the refrigerant flow is regulated by the throttling device 4, it flows into the liquid reservoir 5. The refrigerant discharged from the liquid reservoir 5 flows into the first heat exchanger 61 through the fourth valve 904. The low-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature. The refrigerant flowing out of the first heat exchanger 61 after heat exchange passes through the fifth valve 905 in sequence and flows into the first port E of the four-way valve 7, and then flows into the gas-liquid separator 1 through the second port S of the four-way valve 7. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant, so that the gaseous refrigerant enters the compressor 2. In this way, the air conditioning system 1000 can operate in cooling mode and heating mode respectively.

[0214] FIG24B illustrates the fourth cooperative mode by taking the second loop 118 including the eleventh sub-loop 129 as an example. Of course, in some embodiments, the second loop may further include other sub-loops.

[0215] In some embodiments, the air conditioning system 1000 further includes a twelfth valve 912 , a first valve port a of the twelfth valve 912 is connected to the outlet of the compressor 2 and the water tank, and a second valve port b of the twelfth valve 912 is connected to the second valve port b of the tenth valve 910 .

[0216] For example, as shown in Figure 25, the second circuit 118 includes a twelfth sub-circuit 130. Twelfth sub-circuit 130 is formed by the compressor 2, the second heat exchanger 62, the throttling device 4, the liquid reservoir 5, the first heat exchanger 61, the gas-liquid separator 1, and the compressor 2, which are connected in sequence. The compressor 2 and the second heat exchanger 62 are connected via the twelfth valve 912 and the tenth valve 910. Refrigerant flows along the twelfth sub-circuit 130. The controller 10 is further configured to: activate the first heat exchanger 61 and the second heat exchanger 62; and control the valve assembly 9 to a thirteenth state. In this thirteenth state, the fourth valve 904, the fifth valve 905, the seventh valve 907, the tenth valve 910, the eleventh valve 911, and the twelfth valve 912 are respectively opened, and the first valve 901, the second valve 902, the third valve 903, the sixth valve 906, and the ninth valve 909 are respectively closed.

[0217] When the seventeenth control instruction is sent to the air-conditioning system 1000, when the air-conditioning system 1000 operates in the fourth cooperative mode, the refrigerant circulates in the twelfth sub-circuit in the direction of the arrow shown in Figure 25. The bold black solid line in Figure 25 is the twelfth sub-circuit. The high-temperature, high-pressure refrigerant discharged from compressor 2 flows into second heat exchanger 62 through twelfth valve 912 and tenth valve 910. The high-temperature refrigerant in second heat exchanger 62 exchanges heat with the indoor environment, releasing heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of second heat exchanger 62 after heat exchange passes through eleventh valve 911, throttling device 4, and liquid reservoir 5 in sequence and flows into first heat exchanger 61. The low-temperature refrigerant in first heat exchanger 61 exchanges heat with the indoor environment, absorbing indoor heat, thereby reducing the indoor temperature. The refrigerant flowing out of first heat exchanger 61 after heat exchange passes through fifth valve 905 and flows into first port E of four-way valve 7. From there, it flows into second port S of four-way valve 7, and then into gas-liquid separator 1 through second port S of four-way valve 7. Gas-liquid separator 1 separates gaseous refrigerant from liquid refrigerant, allowing the gaseous refrigerant to enter compressor 2. In this way, air conditioning system 1000 can operate in cooling mode and heating mode separately.

[0218] Figures 24B and 25 illustrate the fourth collaborative mode by taking the first heat exchanger 61 as an evaporator and the second heat exchanger 62 as a condenser as an example. Of course, in some embodiments, the fourth collaborative mode can also be achieved by the first heat exchanger 61 as a condenser and the second heat exchanger 62 as an evaporator.

[0219] For example, as shown in Figures 26 and 27, second circuit 118 includes a thirteenth sub-circuit 131. This sub-circuit is formed by the compressor 2, first heat exchanger 61, liquid accumulator 5, throttling device 4, second heat exchanger 62, four-way valve 7, gas-liquid separator 1, and compressor 2, which are connected in sequence. Refrigerant flows along this thirteenth sub-circuit 131. The controller is further configured to: activate the first heat exchanger 61 and the second heat exchanger 62; control valve assembly 9 to a fourteenth state; in this fourteenth state, the first valve 901, fourth valve 904, sixth valve 906, ninth valve 909, tenth valve 910, and eleventh valve 911 are respectively open; and the second valve 902, third valve 903, fifth valve 905, and seventh valve 907 are respectively closed.

[0220] When the eighteenth control instruction is sent to the air-conditioning system 1000, the air-conditioning system 1000 runs the fourth collaborative mode. As shown in Figures 26 and 27, the refrigerant circulates in the thirteenth sub-circuit 131 in the direction of the arrow shown in Figure 27. The bold black solid line in Figure 27 is the thirteenth sub-circuit 131. Since the first valve port a and the second valve port b of the ninth valve 909 are connected, and the first valve port a and the second valve port b of the sixth valve 906 are connected, the high-temperature and high-pressure refrigerant discharged from the compressor 2 flows into the first heat exchanger 61 through the ninth valve 909 and the sixth valve 906. The high-temperature refrigerant in the first heat exchanger 61 exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of the first heat exchanger 61 after heat exchange is stored in turn through the liquid reservoir 5. Since the first valve port a and the second valve port b of the eleventh valve 911 are connected, the refrigerant discharged from the liquid reservoir 5 is regulated by the throttling device 4 for refrigerant flow, and then passes through the tenth A valve 911 flows into the second heat exchanger 62, and the low-temperature refrigerant in the second heat exchanger 62 exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature. Since the first valve port a and the second valve port b of the tenth valve 910 are connected, and the first valve port a and the second valve port b of the first valve 901 are connected, the refrigerant after heat exchange flowing out of the second heat exchanger 62 flows into the first valve 901 through the tenth valve 910, and then flows from the first valve 901 into the third port C of the four-way valve 7, and flows from the second port S of the four-way valve 7 into the gas-liquid separator 1. The gas-liquid separator 1 separates the gaseous refrigerant from the liquid refrigerant to allow the gaseous refrigerant to enter the compressor 2.

[0221] In some embodiments of the present disclosure, the fourth collaborative mode is achieved by controlling the valve assembly 9 to be in different states and controlling the third port C and the fourth port D of the four-way valve 7 to be connected, thereby meeting the cooling demand and the heating demand.

[0222] It should be noted that the sequence numbers of the steps in some embodiments of the present disclosure are only for the purpose of facilitating the description of some embodiments of the present disclosure and should not be construed as limiting the order of the steps. The order of execution of the steps can be determined based on actual needs and is not limited to the order of the steps in some embodiments of the present disclosure. Steps can also be deleted as needed.

[0223] It should be noted that any one of the technical solutions disclosed in the present disclosure can solve one or more of the above-mentioned technical problems and achieve certain purposes to a certain extent; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above-mentioned technical problems and achieve certain invention purposes; some of the technical disclosures can also be selected to be combined into an overall solution, while adopting related technologies and deteriorated solutions, but the deterioration trend can be compensated by the means disclosed in this technology, and one or more of the above-mentioned technical problems can be solved to a certain extent as a whole and achieve certain invention purposes; each technical disclosure combined into a complete technical solution constitutes an organic and inseparable overall solution, which solves technical problems as a whole and achieves certain invention purposes.

[0224] Any technical disclosure in this disclosure, as well as the recombination of multiple technical disclosures, can form a complete technical solution and can solve one or more of the above-mentioned technical problems and achieve the purpose of the invention. They all belong to the content of this disclosure and are the content that is directly and unambiguously determined based on the content of this disclosure.

[0225] Those skilled in the art will understand that the scope of the present disclosure is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. An air conditioning system, comprising: compressor; A four-way valve, the four-way valve comprising a first port, a second port, a third port and a fourth port; a gas-liquid separator connected to the first end and the second port of the compressor; a water tank connected to the second end of the compressor and the fourth port; Throttling device; A liquid reservoir connected to the throttling device; a target heat exchanger, the target heat exchanger being connected to the first port and the third port, the target heat exchanger being configured to perform heat exchange with air to absorb heat from the air; a first circuit, through which a refrigerant flows, the first circuit comprising a heat exchange flow path, the heat exchange flow path being formed by connecting the compressor and the water tank and being configured to perform heat exchange between the refrigerant in the heat exchange flow path and the water in the water tank; a valve assembly, disposed in the first circuit and configured to open or close the first circuit; and A controller is coupled to the valve assembly and the four-way valve to control the conduction or cutoff of the first circuit; the controller is configured as follows: Acquiring a target operating mode of the air conditioning system; the target operating mode includes a hot water making mode; and The state of the valve assembly and the conduction states between different ports of the four-way valve are controlled according to the target operation mode to adjust the water temperature in the water tank.

2. The air conditioning system according to claim 1, wherein: The target heat exchanger includes any two of the first heat exchanger, the second heat exchanger and the third heat exchanger; The first heat exchanger is configured to perform heat exchange with indoor air, a first end of the first heat exchanger is connected to a second end of the liquid reservoir, and a second end of the first heat exchanger is connected to the first port; The second heat exchanger is configured to perform heat exchange with indoor air, a first end of the second heat exchanger is connected to a first end of the throttling device and a first end of the liquid reservoir, and a second end of the second heat exchanger is connected to a second end of the first heat exchanger and the first port; The third heat exchanger is configured to perform heat exchange with outdoor air. The first end of the third heat exchanger is connected to the third port, and the second end of the third heat exchanger is connected to the second end of the throttling device.

3. The air conditioning system according to claim 2, wherein: The valve assembly comprises: a first valve, wherein a first valve port of the first valve is connected to the third port, and a second valve port of the first valve is connected to a first end of the third heat exchanger; a second valve, wherein a first valve port of the second valve is connected to a second end of the throttling device, and a second valve port of the second valve is connected to a second end of the third heat exchanger; a third valve, wherein a first valve port of the third valve is connected to a first end of the second heat exchanger, and a second valve port of the third valve is connected to a first end of the throttling device and a first end of the liquid reservoir; a fourth valve, wherein a first valve port of the fourth valve is connected to a first end of the first heat exchanger, and a second valve port of the fourth valve is connected to a second end of the liquid reservoir; a fifth valve, wherein a first valve port of the fifth valve is connected to the first port, and a second valve port of the fifth valve is connected to the second end of the first heat exchanger; a sixth valve, a first valve port of the sixth valve being connected to the second end of the first heat exchanger; and A seventh valve, wherein a first valve port of the seventh valve is connected to a second valve port of the sixth valve, and a second valve port of the seventh valve is connected to a second end of the second heat exchanger.

4. The air conditioning system according to claim 3, wherein: The target heat exchanger includes a third heat exchanger; the valve assembly also includes an eighth valve, a first valve port of the eighth valve is connected to the outlet of the water tank, and a second valve port of the eighth valve is connected to the third end of the liquid reservoir; Wherein, the controller is further configured as: Determining that the target operation mode is a hot water making mode; Controlling the third heat exchanger to start; Controlling the valve assembly to be in a first state, and controlling the first port and the fourth port of the four-way valve to be connected; Wherein, in the first state, the first valve, the second valve, and the eighth valve of the valve assembly are respectively in the on state, and the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve are respectively in the off state; The first circuit includes a circuit formed by sequentially connecting the compressor, the water tank, the liquid storage device, the throttling device, the third heat exchanger, the four-way valve and the separator.

5. The air conditioning system according to claim 3, wherein: The target operation mode further includes a first coordinated mode, wherein the first coordinated mode includes a heating mode and a hot water mode; and the controller is further configured to: Determining the target operation mode to be the first collaborative mode; According to the first cooperative mode, the opening and closing of the valve assembly are controlled, and the first port and the fourth port are controlled to be connected, so as to adjust the indoor temperature and heat the water temperature in the water tank to a first preset temperature.

6. The air conditioning system according to claim 5, wherein: The valve assembly also includes a ninth valve, a first valve port of the ninth valve is connected to the outlet of the compressor and the water tank, and a second valve port of the ninth valve is connected to the second valve port of the sixth valve and the first valve port of the seventh valve of the valve assembly.

7. The air conditioning system according to claim 6, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Determine a first priority order corresponding to the first collaborative mode; the first priority order corresponds to the hot water making mode taking precedence over the heating mode; Controlling the first heat exchanger and the second heat exchanger to be turned off, and the third heat exchanger to be turned on; Controlling the valve assembly to be in a first state; wherein, in the first state, the first valve, the second valve, and the eighth valve of the valve assembly are respectively in an on state, and the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve are respectively in an off state; Obtaining the water temperature in the water tank; If it is determined that the water temperature in the water tank reaches the first preset temperature, the first heat exchanger, the second heat exchanger and the third heat exchanger are controlled to start; the valve assembly is controlled to be in a second state; wherein, in the second state, the first valve, the second valve, the third valve, the fourth valve, the sixth valve, the seventh valve and the ninth valve of the valve assembly are respectively in a conducting state, and the fifth valve of the valve assembly is in a closed state.

8. The air conditioning system according to claim 6, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Determine a second priority order corresponding to the first collaborative mode; the second priority order corresponds to the heating mode taking precedence over the hot water mode; Controlling the first heat exchanger, the second heat exchanger to start, and the third heat exchanger to start; Controlling the valve assembly to be in a second state; wherein, in the second state, the first valve, the second valve, the third valve, the fourth valve, the sixth valve, the seventh valve and the ninth valve of the valve assembly are respectively in a conducting state, and the fifth valve of the valve assembly is in a cut-off state; Acquiring the indoor temperature; If it is determined that the indoor temperature reaches the second preset temperature, the first heat exchanger and the second heat exchanger are controlled to be closed, and the third heat exchanger is started; the valve assembly is controlled to be in a first state to adjust the water temperature in the water tank to the first preset temperature; wherein, in the first state, the first valve, the second valve, and the eighth valve of the valve assembly are respectively in a conducting state, and the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve are respectively in a cut-off state.

9. The air conditioning system according to claim 6, wherein: The valve assembly further comprises: an eighth valve, wherein a first valve port of the eighth valve is connected to the outlet of the water tank, and a second valve port of the eighth valve is connected to the third end of the liquid reservoir; The controller is further configured to: determine a third priority order corresponding to the first collaborative mode; the third priority order corresponds to synchronous operation of the hot water making mode and the heating mode.

10. The air conditioning system according to claim 9, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger, the second heat exchanger to start, and the third heat exchanger to start; Control the valve assembly to be in a third state; wherein, in the third state, the first valve, the second valve, the third valve, the fourth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve of the valve assembly are respectively in a conducting state, and the fifth valve of the valve assembly is in a shut-off state.

11. The air conditioning system according to claim 9, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger, the second heat exchanger to start, and the third heat exchanger to start; Control the valve assembly to be in a fourth state; wherein, in the fourth state, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the seventh valve and the ninth valve of the valve assembly are respectively in a conducting state, and the sixth valve and the eighth valve of the valve assembly are in a shut-off state.

12. The air conditioning system according to claim 9, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger to start, the second heat exchanger to shut down, and the third heat exchanger to start; Control the valve assembly to be in a fifth state; wherein, in the fifth state, the first valve, the second valve, the fourth valve and the fifth valve of the valve assembly are respectively in a conducting state, and the third valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve of the valve assembly are in a cut-off state.

13. The air conditioning system according to claim 9, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger to start, the second heat exchanger to shut down, and the third heat exchanger to start; Control the valve assembly to be in a sixth state; wherein, in the sixth state, the first valve, the second valve, the fourth valve, the sixth valve, the eighth valve and the ninth valve of the valve assembly are respectively in a conducting state, and the third valve, the fifth valve and the seventh valve of the valve assembly are in a shut-off state.

14. The air conditioning system according to claim 9, wherein: The controller is also configured to: Controlling the first heat exchanger of the target heat exchanger to be turned off, the second heat exchanger to be turned on, and the third heat exchanger to be started; Control the valve assembly to be in a seventh state; wherein, in the seventh state, the first valve, the second valve, the third valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve of the valve assembly are respectively in a conducting state, and the fourth valve and the fifth valve of the valve assembly are in a shut-off state.

15. The air conditioning system according to claim 3, wherein: The target operation mode further includes a second coordinated mode, and the second coordinated mode includes a cooling mode and the hot water making mode; the controller is further configured to: Determining the target operation mode to be the second collaborative mode; According to the second cooperative mode, the opening and closing of the valve assembly and the connection between the third port and the fourth port of the four-way valve are controlled to adjust the indoor temperature and the water temperature in the water tank is adjusted to a third preset temperature.

16. The air conditioning system according to claim 15, wherein: The valve assembly further comprises an eighth valve, a first valve port of the eighth valve being connected to the outlet of the water tank, and a second valve port of the eighth valve being connected to the third end of the liquid reservoir.

17. The air conditioning system according to claim 16, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger to start, the second heat exchanger to start, and the third heat exchanger to start; The valve assembly is controlled to be in a seventh state; wherein, in the seventh state, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve and the eighth valve are respectively turned on.

18. The air conditioning system according to claim 16, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger to start, the second heat exchanger to shut down, and the third heat exchanger to start; The valve assembly is controlled to be in an eighth state; wherein, in the eighth state, the first valve, the second valve, the fourth valve, the fifth valve, and the eighth valve are respectively turned on, and the third valve, the sixth valve, and the seventh valve are respectively turned off.

19. The air conditioning system according to claim 16, wherein: The target heat exchanger includes a first heat exchanger, a second heat exchanger and a third heat exchanger; the controller is further configured to: Controlling the first heat exchanger to be turned off, the second heat exchanger to be turned on, and the third heat exchanger to be turned on; The valve assembly is controlled to be in a ninth state; wherein, in the ninth state, the first valve, the second valve, the third valve, the fifth valve, the sixth valve and the seventh valve are respectively turned on, and the fourth valve is turned off.

20. The air conditioning system according to claim 3, wherein: The target operation mode further includes a third coordinated mode, and the third coordinated mode includes a cooling mode, a heating mode, and the hot water mode; the controller is further configured to: Determining the target operation mode to be the third collaborative mode; According to the third cooperative mode, the opening and closing of the valve assembly and the connection between the third port and the fourth port of the four-way valve are controlled to adjust the indoor temperature and the water temperature in the water tank.

21. The air conditioning system according to claim 20, wherein: The valve assembly further comprises: a ninth valve, wherein a first valve port of the ninth valve is connected to the outlet of the compressor and the water tank, and a second valve port of the ninth valve is connected to the second valve port of the sixth valve and the first valve port of the seventh valve; a tenth valve, wherein a first valve port of the tenth valve is connected to the second end of the second heat exchanger, and a second valve port of the tenth valve is connected to the second valve port of the first valve; and The eleventh valve, the first valve port of the eleventh valve is connected to the first end of the second heat exchanger, and the second valve port of the eleventh valve is connected to the second end of the throttling device.

22. The air conditioning system according to claim 21, wherein: The target heat exchanger includes a first heat exchanger and a second heat exchanger; The controller is also configured to: Controlling the first heat exchanger to start, and the second heat exchanger to start; The valve assembly is controlled to be in a tenth state; in the tenth state, the first valve, the fourth valve, the fifth valve, the seventh valve, the ninth valve, the tenth valve and the eleventh valve are respectively turned on, and the second valve, the third valve and the sixth valve are turned off.

23. The air conditioning system according to claim 21, wherein: The target heat exchanger includes a first heat exchanger and a second heat exchanger; The controller is also configured to: Controlling the first heat exchanger to start, and the second heat exchanger to start; The controller is also configured to: control the valve assembly to be in an eleventh state; in the eleventh state, the first valve, the fourth valve, the fifth valve, the tenth valve and the eleventh valve are respectively turned on, and the second valve, the third valve, the sixth valve, the seventh valve and the ninth valve are turned off.

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