Air conditioner and control method of air conditioner

Abstract

The invention discloses an air conditioner and a control method of the air conditioner, and the air conditioner comprises a heat exchange flow path on which a living water tank is placed, and the heat exchange flow path is used for realizing heat exchange between the living water tank and a refrigerant circulation flow path; the control valve group is arranged on the refrigerant circulating flow path and is used for opening or closing the refrigerant circulating flow path; the controller is connected with the control valve group and the four-way valve, the controller is configured to obtain a target operation mode of the air conditioner, and the target operation mode is any one of a heating mode, a refrigerating mode or a water heating mode; according to the target operation mode, the on-off states of the control valve set and the four-way valve are controlled so as to adjust the indoor temperature or adjust the water temperature of the living water tank, the air conditioner can meet the requirements of a user for refrigeration, heating and water heating, waste heat generated during refrigeration or heating is fully used for making hot water, and therefore environmental thermal pollution is reduced, and the energy consumption of the air conditioner is reduced. And energy waste in the operation process of the air conditioner is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner and a control method thereof. Background Art

[0002] As global warming intensifies, air conditioners are being installed to address thermal comfort in hot summer environments. However, when operating in cooling mode, air conditioners generate a large amount of waste heat, which is discharged outdoors, further exacerbating the urban heat island effect. Existing air conditioners are unable to utilize the waste heat generated during cooling and heating to produce hot water. Instead, they discharge the waste heat directly into the environment, increasing environmental thermal pollution and causing energy waste during operation. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air conditioner that can meet the user's cooling, heating, and hot water needs, and fully utilizes waste heat generated during cooling or heating to produce hot water, thereby reducing environmental thermal pollution and avoiding energy waste during air conditioner operation.

[0004] A second object of the present invention is to provide a control method for an air conditioner.

[0005] In order to solve the above problems, an embodiment of the first aspect of the present invention proposes an air conditioner, comprising: a refrigerant circulation flow path, so that the refrigerant circulates in the flow path composed of a vapor-liquid separator, a compressor, a fin heat exchanger, a throttling device, a liquid storage device, a heat exchanger group and a four-way valve; the heat exchanger group includes a plurality of refrigerant branches arranged in parallel, and each refrigerant branch is provided with a heat exchanger; the four-way valve includes a first port, a second port, a third port and a fourth port, the first port is connected to the heat exchanger group, the second port is connected to the vapor-liquid separator, and the third port is connected to the fin heat exchanger; a domestic water tank for storing domestic water; a heat exchange flow path, one end of which is connected to the outlet of the compressor, and the heat exchange flow path The other end is connected to the fourth port, the domestic water tank is placed on the heat exchange flow path, and the heat exchange flow path is used to realize heat exchange between the domestic water tank and the refrigerant circulation flow path; a control valve group, the control valve group is arranged on the refrigerant circulation flow path, and is used to conduct or cut off the refrigerant circulation flow path; a controller, the controller is connected to the control valve group and the four-way valve, and the controller is configured to: obtain a target operating mode of the air conditioner, wherein the target operating mode is any one of a heating mode, a cooling mode or a hot water mode; control the switching state of the control valve group and the switching state of the four-way valve according to the target operating mode to adjust the indoor temperature or the water temperature of the domestic water tank.

[0006] According to the air conditioner of an embodiment of the present invention, when the target operating mode is cooling, heating or hot water making, the switching state of the control valve group and the switching state of the four-way valve are controlled by the target operating mode to open or close the refrigerant circulation flow path to adjust the indoor temperature, and when operating in the hot water making mode, the domestic water tank and the refrigerant circulation flow path are heat-exchanged through the heat exchange flow path to heat the water in the domestic water tank. Therefore, the air conditioner in this application uses the waste heat generated when operating in the cooling mode or the heating mode to produce hot water, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste of the air conditioner during operation, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0007] In some embodiments, the control valve group includes: a first multi-way valve, wherein the first valve port of the first multi-way valve is connected to the third port, and the second valve port of the first multi-way valve is connected to one end of the fin heat exchanger; a second multi-way valve, wherein the first valve port of the second multi-way valve is connected to one end of the throttling device, and the second valve port of the fifth multi-way valve is connected to the other end of the fin heat exchanger; a third multi-way valve, wherein the first valve port of the third multi-way valve is connected to the first end of the heat exchanger group, and the second valve port of the third multi-way valve is connected to the other end of the throttling device and one end of the liquid reservoir; a fourth multi-way valve multi-way valve, the first valve port of the fourth multi-way valve is connected to the second end of the heat exchanger group, and the second valve port of the first multi-way valve is connected to the other end of the liquid reservoir; a fifth multi-way valve, the first valve port of the fifth multi-way valve is connected to the first port, and the second valve port of the fifth multi-way valve is connected to the third end of the heat exchanger group; a sixth multi-way valve, the first valve port of the sixth multi-way valve is connected to the third end of the heat exchanger group; a seventh multi-way valve, the first valve port of the seventh multi-way valve is connected to the second valve port of the sixth multi-way valve, and the second valve port of the seventh multi-way valve is connected to the fourth end of the heat exchanger group.

[0008] In some embodiments, the target operating mode is the cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured to: control the switch state of the control valve group to a first state according to the cooling mode, and control the third port to be connected to the fourth port to conduct the cooling flow path so that the indoor temperature reaches a first set temperature; wherein, in the first state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the fifth multi-way valve is connected to the second valve port of the fifth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, and the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve.

[0009] In some embodiments, the control valve group further includes: an eighth multi-way valve, a first valve port of the eighth multi-way valve is connected to the outlet of the compressor, and a second valve port of the eighth multi-way valve is connected to one end of the fin heat exchanger.

[0010] In some embodiments, the target operating mode is the cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured to: control the switch state of the control valve group to the second state according to the cooling mode, and control the third port to be connected to the fourth port to conduct the cooling flow path so that the indoor temperature reaches the first set temperature; wherein, in the second state, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the fifth multi-way valve is connected to the second valve port of the fifth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve, and the first valve port of the eighth multi-way valve is connected to the second valve port of the eighth multi-way valve.

[0011] In some embodiments, the control valve group also includes: a ninth multi-way valve, the first valve port of the ninth multi-way valve is connected to the outlet of the compressor, and the second valve port of the ninth multi-way valve is connected to the second valve port of the sixth multi-way valve and the first valve port of the seventh multi-way valve.

[0012] In some embodiments, the target operating mode is the heating mode, the refrigerant circulation path includes a heating path, and the controller is specifically configured to: control the switch state of the control valve group to a third state according to the heating mode, and control the first port to communicate with the fourth port to conduct the heating path so that the indoor temperature reaches a second set temperature. In the third state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve, and the first valve port of the ninth multi-way valve is connected to the second valve port of the ninth multi-way valve.

[0013] In some embodiments, the control valve group further includes: a tenth multi-way valve, a first valve port of the tenth multi-way valve being connected to the other end of the heat exchange flow path, and a second valve port of the tenth multi-way valve being connected to one end of the liquid reservoir.

[0014] In some embodiments, the target operating mode is the hot water making mode, and the controller is specifically configured to: control the switch state of the control valve group to be the fourth state according to the hot water making mode, and control the first port to be connected to the fourth port to conduct the heat exchange flow path, so that heat exchange is performed between the domestic water tank and the heat exchange flow path; wherein, in the fourth state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, and the first valve port of the tenth multi-way valve is connected to the second valve port of the tenth multi-way valve.

[0015] A second aspect of the present invention provides a method for controlling an air conditioner, which is used for the air conditioner described in the above embodiment. The control method includes: obtaining a target operating mode of the air conditioner, wherein the target operating mode is any one of a heating mode, a cooling mode, or a hot water mode; and controlling the switching state of the control valve group and the switching state of the four-way valve according to the target operating mode to adjust the indoor temperature or the water temperature of the domestic water tank.

[0016] According to the control method of the air conditioner of the present invention, when the target operating mode is cooling, heating or hot water making, the switching state of the control valve group and the switching state of the four-way valve are controlled by the target operating mode to open or close the refrigerant circulation flow path to adjust the indoor temperature, and when operating in the hot water making mode, the domestic water tank and the refrigerant circulation flow path are heat-exchanged through the heat exchange flow path to heat the water in the domestic water tank. Therefore, the air conditioner in this application produces hot water with the waste heat generated when operating in the cooling mode or the heating mode, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste of the air conditioner during operation, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0019] Figure 1 is a connection diagram of an air conditioner according to one embodiment of the present invention;

[0020] Figure 2 is a structural block diagram of an air conditioner according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of refrigerant circulation in a cooling mode according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of refrigerant circulation in a cooling mode according to another embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of refrigerant circulation in a cooling mode according to another embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of refrigerant circulation in heating mode according to an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of refrigerant circulation in heating mode according to another embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of refrigerant circulation in hot water production mode according to an embodiment of the present invention;

[0027] Figure 9 is a schematic diagram of refrigerant circulation in hot water production mode according to another embodiment of the present invention;

[0028] Figure 10 is a flowchart of a method for controlling an air conditioner according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Air conditioner 1000;

[0031] Gas-liquid separator 1; compressor 2; fin heat exchanger 3; throttling device 4; liquid receiver 5; heat exchanger group 6; four-way valve 7; domestic water tank 8; control valve group 9; controller 10;

[0032] First heat exchanger 61; second heat exchanger 62; first multi-way valve 901; second multi-way valve 902; third multi-way valve 903; fourth multi-way valve 904; fifth multi-way valve 905; sixth multi-way valve 906; seventh multi-way valve 907; eighth multi-way valve 908; ninth multi-way valve 909; tenth multi-way valve 910. DETAILED DESCRIPTION

[0033] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0034] As global warming intensifies, air conditioners are being installed to address thermal comfort in hot summer environments. However, when operating in cooling mode, air conditioners generate a large amount of waste heat, which is discharged outdoors, further exacerbating the urban heat island effect. Existing air conditioners are unable to utilize the waste heat generated during cooling and heating to produce hot water. Instead, they discharge the waste heat directly into the environment, increasing environmental thermal pollution and causing energy waste during operation.

[0035] In order to solve the above problems, the first embodiment of the present invention proposes an air conditioner 1000, which can meet the user's needs for cooling, heating and hot water production, and make full use of the waste heat generated during cooling or heating to produce hot water, thereby reducing environmental thermal pollution and avoiding energy waste during the operation of the air conditioner.

[0036] Reference below Figure 1 The air conditioner 1000 according to the embodiment of the present invention is described as follows. Figure 1 As shown, the air conditioner 1000 includes: a refrigerant circulation flow path, a domestic water tank 8, a heat exchange flow path, a control valve group 9 and a controller.

[0037] Among them, the refrigerant circulation flow path allows the refrigerant to circulate in the flow path composed of the vapor-liquid separator 1, the compressor 2, the fin heat exchanger 3, the throttling device 4, the liquid storage device 5, the heat exchanger group 6 and the four-way valve 7; the heat exchanger group 6 includes a plurality of refrigerant branches arranged in parallel, and each refrigerant branch is provided with a heat exchanger; the four-way valve 7 includes a first port E, a second port S, a third port C and a fourth port D, the first port is connected to the heat exchanger group 6, the second port is connected to the vapor-liquid separator 1, and the third port C is connected to the fin heat exchanger 3; the domestic water tank 8 is used to store domestic water; one end of the heat exchange flow path is connected to the outlet of the compressor 2, and the other end of the heat exchange flow path is connected to the fourth port D, and the heat exchange flow path is used to realize heat exchange between the domestic water tank 8 and the refrigerant circulation flow path; the control valve group 9 is provided on the refrigerant circulation flow path, for conducting or cutting off the refrigerant circulation flow path; such as Figure 2 As shown, the controller 10 is connected to the control valve group 9 and the four-way valve 7.

[0038] The controller is configured to: obtain a target operating mode of the air conditioner 1000, wherein the target operating mode is any one of a heating mode, a cooling mode or a hot water mode; and control the switching state of the control valve group 9 and the switching state of the four-way valve 7 according to the target operating mode to adjust the indoor temperature or the water temperature of the domestic water tank 8.

[0039] Specifically, as global warming intensifies, air conditioners are installed to solve the problem of thermal comfort in high-temperature environments in summer. However, when the air conditioner is running in cooling mode, a large amount of waste heat is generated and discharged to the outside, further exacerbating the urban heat island effect. Existing air conditioners cannot use the waste heat generated in cooling and heating to produce hot water, but directly discharge the waste heat to the environment, thereby increasing environmental thermal pollution and causing energy waste during the operation of the air conditioner. In order to solve this problem, this application proposes an air conditioner 1000, which controls the switching state of the control valve group 9 and the switching state of the four-way valve 7 through the target operating mode, so that the air conditioner can realize the hot water making function by running in cooling or heating mode. That is, when the user has cooling, heating or hot water making needs, the air conditioner is controlled to run the corresponding target operating mode. When the target operating mode is cooling or heating mode, the switching state of the control valve group 9 and the switching state of the four-way valve 7 are controlled according to the target operating mode to turn on or off. The refrigerant circulation flow path is used to adjust the indoor temperature. When the target operating mode is to make hot water, the switching state of the control valve group 9 and the switching state of the four-way valve 7 are controlled according to the target operating mode to open or close the refrigerant circulation flow path, and the water in the domestic water tank 8 is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path to increase the water temperature of the domestic water tank to complete the hot water making function. Therefore, in this application, the cooling, heating or hot water making mode is operated by controlling the switching state of different valves, and in the hot water making mode, the water in the domestic water tank 8 is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path, so that the air conditioner can use the waste heat generated when running in the cooling mode or heating mode to produce hot water, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste of the air conditioner during operation, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0040] According to the air conditioner 1000 of the present invention, when the target operating mode is cooling, heating or hot water making, the switching state of the control valve group 9 and the switching state of the four-way valve 7 are controlled by the target operating mode to open or close the refrigerant circulation flow path to adjust the indoor temperature, and when operating in the hot water making mode, the domestic water tank 8 is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path to heat the water in the domestic water tank 8. Therefore, the air conditioner in this application produces hot water with the waste heat generated when operating in the cooling mode or the heating mode, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste of the air conditioner during operation, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0041] In some embodiments, as Figure 1 As shown, the control valve group 9 includes: a first multi-way valve 901 , a second multi-way valve 902 , a third multi-way valve 903 , a fourth multi-way valve 904 , a fifth multi-way valve 905 , a sixth multi-way valve 906 and a seventh multi-way valve 907 .

[0042] Among them, Figure 1 As shown, the first valve port a of the first multi-way valve 901 is connected to the third port C of the four-way valve 7, and the second valve port b of the first multi-way valve 901 is connected to one end of the fin heat exchanger 3; the first valve port a of the second multi-way valve 902 is connected to one end of the throttling device 4, and the second valve port b of the fifth multi-way valve 905 is connected to the other end of the fin heat exchanger 3; the first valve port a of the third multi-way valve 903 is connected to the first end of the heat exchanger group 6, and the second valve port b of the third multi-way valve 903 is connected to the other end of the throttling device 4 and one end of the liquid reservoir 5; the first valve port a of the fourth multi-way valve 904 is connected to the other end of the throttling device 4 and one end of the liquid reservoir 5; A valve port a is connected to the second end of the heat exchanger group 6, and the second valve port b of the first multi-way valve 901 is connected to the other end of the liquid reservoir 5; the first valve port a of the fifth multi-way valve 905 is connected to the first port E of the four-way valve 7, and the second valve port b of the fifth multi-way valve 905 is connected to the third end of the heat exchanger group 6; the first valve port a of the sixth multi-way valve 906 is connected to the third end of the heat exchanger group 6; the first valve port a of the seventh multi-way valve 907 is connected to the second valve port b of the sixth multi-way valve 906, and the second valve port b of the seventh multi-way valve 907 is connected to the fourth end of the heat exchanger group 6.

[0043] In some embodiments, the target operating mode is a cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured to: control the switch state of the control valve group 9 to be a first state according to the cooling mode, and control the third port C of the four-way valve to be connected to the fourth port D to conduct the cooling flow path so that the indoor temperature reaches a first set temperature; wherein, in the first state, the first valve port a of the first multi-way valve 901 is connected to the second valve port b of the first multi-way valve 901, the first valve port a of the second multi-way valve 902 is connected to the second valve port b of the second multi-way valve 902, and the first valve port a of the third multi-way valve 903 is connected It is connected to the second valve port b of the third multi-way valve 903, the first valve port a of the fourth multi-way valve 904 is connected to the second valve port b of the fourth multi-way valve 904, the first valve port a of the fifth multi-way valve 905 is connected to the second valve port b of the fifth multi-way valve 905, the first valve port a of the sixth multi-way valve 906 is connected to the second valve port b of the sixth multi-way valve 906, and the first valve port a of the seventh multi-way valve 907 is connected to the second valve port b of the seventh multi-way valve 907. Thus, the refrigeration function is achieved by controlling the switching state of the control valve group 9 to be the first state, and controlling the third port C of the four-way valve 7 to be connected to the fourth port D.

[0044] Specifically, when the user has a cooling demand, the user can send a cooling instruction to the air conditioner through the remote control, the air conditioning application in the mobile terminal or the control panel on the air conditioner body by language, gestures and other operating methods. After receiving the cooling instruction, the target operating mode of the air conditioner is the cooling mode, the switch state of the control valve group 9 is controlled to be the first state, and the third port C and the fourth port D of the four-way valve 7 are controlled to be connected to conduct the cooling flow path, so that the high-temperature and high-pressure refrigerant discharged by the compressor 2 circulates in the cooling flow path, that is, according to Figure 3 The direction of the arrow shown is in the refrigeration flow circuit, where Figure 1The bold black solid line is the cooling flow path, that is, since the fourth port D and the third port C of the four-way valve are connected, the high-temperature and high-pressure refrigerant discharged by the compressor 2 flows into the domestic 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 multi-way valve 901 are connected, the refrigerant can flow into the first valve port a of the first multi-way valve 901 through the third port C of the four-way valve 7, and flow into the fin heat exchanger 3 through the second valve port b of the first multi-way valve 901. The fin heat exchanger 3 exchanges heat between the high-temperature and high-pressure refrigerant and the outdoor environment, that is, absorbs the heat of the high-temperature and high-pressure refrigerant to supply heat to the outdoor environment. Heat is released in the environment. Since the first valve port a and the second valve port b of the second multi-way valve 902 are connected, the refrigerant after releasing the heat can flow into the throttling device 4 through the second multi-way valve 902 for refrigerant flow regulation. Since the first valve port a and the second valve port b of the third multi-way valve 903 are connected, a part of the refrigerant flows into a heat exchanger arranged on a refrigerant branch line through the third multi-way valve 903. The low-temperature refrigerant in the heat exchanger 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 seventh multi-way valve 907, the sixth multi-way valve 906 and the fifth multi-way valve 905 are connected Port b is connected, and the refrigerant after heat exchange flowing out of the heat exchanger passes through the seventh multi-way valve 907, the sixth multi-way valve 906 and the fifth multi-way valve 905 in sequence and flows into the first port E of the four-way valve 7, and then flows into the vapor-liquid separator 1 through the second port S of the four-way valve 7. The vapor-liquid separator 1 separates the vapor and liquid of the refrigerant and then flows back to the compressor 2. The other part of the refrigerant flows into the liquid reservoir 5 to be stored. The refrigerant discharged from the liquid reservoir 5 flows from the fourth multi-way valve 904 into the heat exchanger set on another refrigerant branch. The low-temperature refrigerant in the heat exchanger exchanges heat with the indoor environment to absorb indoor heat, thereby reducing the indoor temperature. This is done by exchanging heat with the indoor environment through the heat exchanger, so that the indoor temperature reaches a first set temperature, wherein the first set temperature can be set by the user. The refrigerant after heat exchange flowing out of the heat exchanger flows into the first port of the four-way valve 7 through the fifth multi-way valve 905, and then flows into the vapor-liquid separator 1 through the second port S of the four-way valve 7. The vapor-liquid separator 1 then separates the vapor and liquid of the refrigerant and then flows back to the compressor 2. Therefore, the cooling mode is achieved by controlling the switching state of the control valve group 9 to the first state, and controlling the third port C and the fourth port D of the four-way valve 7 to be connected, thereby meeting the user's cooling needs.

[0045] In some embodiments, as Figure 4 As shown, the control valve group 9 further includes: an eighth multi-way valve 908 .

[0046] The first valve port a of the eighth multi-way valve 908 is connected to the outlet of the compressor 2 , and the second valve port b of the eighth multi-way valve 908 is connected to one end of the fin heat exchanger 3 .

[0047] In some embodiments, the target operating mode is a cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured to: control the switch state of the control valve group 9 to be the second state according to the cooling mode, and control the third port C of the four-way valve 7 to be connected to the fourth port D, so as to conduct the cooling flow path so that the indoor temperature reaches the first set temperature; wherein, in the second state, the first valve port a of the second multi-way valve 902 is connected to the second valve port b of the second multi-way valve 902, the first valve port a of the third multi-way valve 903 is connected to the second valve port b of the third multi-way valve 903, and the first valve port of the fourth multi-way valve 904 is connected a is connected to the second valve port b of the fourth multi-way valve 904, the first valve port a of the fifth multi-way valve 905 is connected to the second valve port b of the fifth multi-way valve 905, the first valve port a of the sixth multi-way valve 906 is connected to the second valve port b of the sixth multi-way valve 906, the first valve port a of the seventh multi-way valve 907 is connected to the second valve port b of the seventh multi-way valve 907, the first valve port a of the eighth multi-way valve 908 is connected to the second valve port b of the eighth multi-way valve 908, thereby realizing the refrigeration function by controlling the switching state of the control valve group 9 to be the second state, and controlling the third port C of the four-way valve 7 to be connected to the fourth port D.

[0048] Specifically, when the user has a cooling demand, the user can send a cooling instruction to the air conditioner through the remote control, the air conditioning application in the mobile terminal or the control panel on the air conditioner body by language, gestures and other operation methods. After receiving the cooling instruction, the target operation mode of the air conditioner is the cooling mode, the switch state of the control valve group 9 is controlled to be the second state, and the third port C and the fourth port D of the four-way valve 7 are controlled to be connected to conduct the cooling flow path, so that the high-temperature and high-pressure refrigerant discharged by the compressor 2 circulates in the cooling flow path, that is, according to Figure 5 The direction of the arrow shown is in the refrigeration flow circuit, where Figure 4The bold black solid line is the cooling flow path, that is, since the first valve port a and the second valve port b of the eighth multi-way valve 908 are connected, the high-temperature and high-pressure refrigerant discharged from the compressor 2 can flow into the fin heat exchanger 3 through the eighth multi-way valve 908, and the fin heat exchanger 3 then exchanges heat between the high-temperature and high-pressure refrigerant and the outdoor environment, that is, 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 multi-way valve 902 are connected, the refrigerant after releasing the heat flows into the throttling device 4 through the second multi-way valve 902 to After the refrigerant flow is adjusted, since the first valve port a and the second valve port b of the third multi-way valve 903 are connected, a part of the refrigerant flows into a heat exchanger set up on a refrigerant branch through the third multi-way valve 903, and the low-temperature refrigerant in the heat exchanger 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 sixth multi-way valve 906, the seventh multi-way valve 907 and the fifth multi-way valve 905 are connected, the refrigerant after heat exchange flowing out of the heat exchanger can pass through the sixth multi-way valve 906, the seventh multi-way valve 907 and the fifth multi-way valve 905. 907 and the fifth multi-way valve 905 flow into the first port E of the four-way valve 7, and then flow into the vapor-liquid separator 1 through the second port S of the four-way valve 7. The vapor-liquid separator 1 separates the gas and liquid of the refrigerant and then flows back to the compressor 2. The other part of the refrigerant flows into the liquid reservoir 5 to be stored. Since the first valve port a and the second valve port b of the fourth multi-way valve 904 are connected, the refrigerant discharged from the liquid reservoir 5 can flow from the fourth multi-way valve 904 into the heat exchanger set on another refrigerant branch. The low-temperature refrigerant in the heat exchanger exchanges heat with the indoor environment to absorb indoor heat. amount, thereby lowering the indoor temperature so that the indoor temperature reaches the first set temperature. The refrigerant after heat exchange flowing out of the heat exchanger flows into the first port E of the four-way valve 7 through the fifth multi-way valve 905, and then flows into the vapor-liquid separator 1 through the second port S of the four-way valve 7. The vapor-liquid separator 1 then separates the vapor and liquid of the refrigerant and then flows back to the compressor 2. Therefore, by controlling the switch state of the control valve group 9 to be the second state, and controlling the third port C and the fourth port D of the four-way valve 7 to be connected, the cooling mode is realized, thereby meeting the user's cooling needs.

[0049] In some embodiments, as Figure 6 As shown, the control valve group 9 includes: a ninth multi-way valve 909 .

[0050] Among them, the first valve port a of the ninth multi-way valve 909 is connected to the outlet of the compressor 2, and the second valve port b of the ninth multi-way valve 909 is connected to the second valve port b of the sixth multi-way valve 906 and the first valve port a of the seventh multi-way valve 907.

[0051] In some embodiments, the target operating mode is a heating mode, the refrigerant circulation flow path includes a heating flow path, and the controller is specifically configured to: control the switching state of the control valve group 9 to the third state according to the heating mode, and control the first port E and the fourth port D of the four-way valve 7 to be connected to conduct the heating flow path so that the indoor temperature reaches the second set temperature. Among them, in the third state, the first valve port a of the first multi-way valve 901 is connected to the second valve port b of the first multi-way valve 901, the first valve port a of the second multi-way valve 902 is connected to the second valve port b of the second multi-way valve 902, the first valve port a of the third multi-way valve 903 is connected to the second valve port b of the third multi-way valve 903, the first valve port a of the fourth multi-way valve 904 is connected to the second valve port b of the fourth multi-way valve 904, the first valve port a of the sixth multi-way valve 906 is connected to the second valve port b of the sixth multi-way valve 906, the first valve port a of the seventh multi-way valve 907 is connected to the second valve port b of the seventh multi-way valve 907, and the first valve port a of the ninth multi-way valve 909 is connected to the second valve port b of the ninth multi-way valve 909. Therefore, by controlling the switching state of the control valve group 9 to be the third state, and controlling the first port E of the four-way valve 7 to be connected to the fourth port D, the heating function is realized.

[0052] Specifically, when the user has a heating demand, the user can send a heating instruction to the air conditioner 1000 through the remote control, the air conditioning application in the mobile terminal or the control panel on the body of the air conditioner 1000 by language, gestures and other operating methods. After receiving the heating instruction, the target operating mode of the air conditioner 1000 is the heating mode, the switch state of the control valve group 9 is controlled to be the third state, and the first port E of the four-way valve 7 is controlled to be connected with the fourth port D to conduct the heating flow path, so that the high-temperature and high-pressure refrigerant discharged from the compressor 2 circulates in the heating flow path, that is, according to Figure 7 The direction of the arrow shown is in the heating flow path, where Figure 6The bold black solid line in the middle is the heating flow path, that is, since the first valve port a and the second valve port b of the ninth multi-way valve 909, the seventh multi-way valve 907 and the sixth multi-way valve 906 are connected, the high-temperature and high-pressure refrigerant discharged by the compressor 2 flows through the ninth multi-way valve 909, and a part of the refrigerant flows into a heat exchanger arranged on a refrigerant branch through the seventh multi-way valve 907. The high-temperature refrigerant in the heat exchanger exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of the heat exchanger after heat exchange flows into the throttling device 4 through the third multi-way valve 903, and the other part of the refrigerant flows into the heat exchanger arranged on another refrigerant branch through the sixth multi-way valve 906. The high-temperature refrigerant in the heat exchanger exchanges heat with the indoor environment to release heat to the indoor environment, thereby increasing the indoor temperature. The refrigerant flowing out of the heat exchanger 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, thereby the heat exchanger exchanges heat with the indoor environment. Heat exchange is carried out so that the indoor temperature reaches the second set temperature, wherein the second set temperature can be set by the user and there is no restriction on this. After the refrigerant passes through the throttling device 4 and the refrigerant flow is adjusted, since the first valve port a and the second valve port b of the second multi-way valve 902 are connected, it can flow into the fin heat exchanger 3 through the second multi-way valve 902. The fin heat exchanger 3 exchanges heat between the low-temperature refrigerant and the outdoor environment, that is, the heat of the low-temperature refrigerant absorbs the heat of the outdoor environment. The refrigerant after absorbing the heat flows into the third port C of the four-way valve 7 under the connection of the first valve port a and the second valve port b of the first multi-way valve 901, and then flows into the vapor-liquid separator 1 through the second port S of the four-way valve. The vapor-liquid separator 1 separates the gas and liquid of the refrigerant and then flows back to the compressor 2. Therefore, the heating mode is completed by controlling the switch state of the control valve group 9 to be the third state, and controlling the first port E of the four-way valve 7 to be connected to the fourth port D, thereby meeting the user's heating needs.

[0053] In some embodiments, as Figure 8 As shown, the control valve group 9 includes a tenth multi-way valve 910 , wherein a first valve port a of the tenth multi-way valve 910 is connected to the other end of the heat exchange flow path, and a second valve port b of the tenth multi-way valve 910 is connected to one end of the liquid reservoir 5 .

[0054] In some embodiments, the target operating mode is a hot water production mode, and the controller is specifically configured to: control the switch state of the control valve group 9 to a fourth state according to the hot water production mode, and control the first port E of the four-way valve 7 to communicate with the fourth port D, thereby conducting the heat exchange flow path and enabling heat exchange between the domestic water tank 8 and the heat exchange flow path. In the fourth state, the first valve port a of the first multi-way valve 901 is connected to the second valve port b of the first multi-way valve 901, the first valve port a of the second multi-way valve 902 is connected to the second valve port b of the second multi-way valve 902, and the first valve port a of the tenth multi-way valve 910 is connected to the second valve port b of the tenth multi-way valve 910. Thus, by controlling the switch state of the control valve group 9 to the fourth state and controlling the first port E of the four-way valve to communicate with the fourth port D, the hot water production function is achieved.

[0055] Specifically, when the user has a need for hot water, he can send a hot water instruction to the air conditioner 1000 through the remote control, the air conditioning application in the mobile terminal or the control panel on the body of the air conditioner 1000 by language, gestures and other operating methods. After receiving the hot water instruction, the target operating mode of the air conditioner 1000 is the hot water mode, the switch state of the control valve group 9 is controlled to be the fourth state, and the first port E is controlled to be connected with the fourth port D to conduct the heat exchange flow path, so that the high-temperature and high-pressure refrigerant discharged by the compressor 2 circulates in the heat exchange flow path, that is, according to Figure 9 The direction of the arrow shown is circulating in the heat exchange path, where Figure 8 The bold black solid line in the middle is the heat exchange flow path, that is, the high-temperature and high-pressure refrigerant discharged by the compressor 2 flows into the domestic water tank 8 to exchange heat with the domestic water tank 8 to release heat to the domestic water tank 8, and the domestic water tank 8 uses the refrigerant to heat the water in the domestic water tank 8. Under the connection between the first valve port a and the second valve port b of the tenth multi-way valve 910, the refrigerant flows into the liquid reservoir 5 through the tenth multi-way valve 910 to be stored. After the refrigerant discharge from the liquid reservoir 5 flows through the throttling device 4 for refrigerant flow regulation, it flows into the fin heat exchanger 3 through the second multi-way valve 902 under the connection between the first valve port a and the second valve port b of the second multi-way valve 902. The fin The plate heat exchanger 3 exchanges heat between the low-temperature refrigerant and the outdoor environment, that is, the heat of the low-temperature refrigerant absorbs the heat of the outdoor environment. The refrigerant after absorbing the 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 multi-way valve 901, and then flows into the vapor-liquid separator 1 through the third port C of the four-way valve 7. The vapor-liquid separator 1 then separates the vapor and liquid of the refrigerant and then flows back to the compressor 2. Therefore, the hot water making mode is realized by controlling the switch state of the control valve group 9 to the fourth state, and controlling the first port E of the four-way valve to be connected to the fourth port D, thereby meeting the user's hot water making needs.

[0056] In the embodiment, the multi-way valve may be a multi-directional valve body such as a four-way valve, a three-way valve, etc., which is not limited thereto.

[0057] In the embodiment, the heat exchange tube of the domestic water tank is in the shape of a coil, which is wound around the outside of the metal inner liner of the domestic water tank. There is thermal grease between the heat exchange tube and the metal inner liner, and the thermal grease can enhance heat transfer.

[0058] In the embodiment, except for the compressor, domestic water tank, four-way valve, and vapor-liquid separator, the multi-way valve and heat exchanger have no directionality and can be connected in any direction.

[0059] In an embodiment, the multi-way valve in the present application can change the flow direction of the refrigerant in the entire refrigeration system by opening and closing.

[0060] A second aspect of the present invention provides a method for controlling an air conditioner, which is used in the air conditioner of the above embodiment. Figure 10 As shown, the control method at least includes:

[0061] Step S1 : obtaining a target operating mode of the air conditioner, wherein the target operating mode is any one of a heating mode, a cooling mode, or a hot water mode.

[0062] Specifically, when the user has cooling, heating or hot water needs, the user can send the target operating mode to the air conditioner through the remote control, the air conditioning application in the mobile terminal or the control panel on the air conditioner body through language, gestures and other operations, and the controller obtains the target operating mode of the air conditioner.

[0063] Step S2, controlling the on / off state of the control valve group and the on / off state of the four-way valve according to the target operation mode to adjust the indoor temperature or the water temperature of the domestic water tank.

[0064] Specifically, with the intensification of global warming, air conditioners are installed to solve the problem of thermal comfort in high temperature environments in summer. However, when the air conditioner is running in cooling mode, a large amount of waste heat is generated and discharged to the outside, further aggravating the urban heat island effect. Existing air conditioners cannot use the waste heat generated in cooling and heating to produce hot water, but directly discharge the waste heat to the environment, thereby increasing environmental heat pollution and causing energy waste during the operation of the air conditioner. In order to solve this problem, the present application controls the switching status of different valves to operate in cooling, heating or hot water making mode, and in the hot water making mode, the water in the domestic water tank is heat-exchanged with the refrigerant circulation flow through the heat exchange flow path, so that the air conditioner can use the waste heat generated when running in cooling mode or heating mode to produce hot water. That is to say, when the user has cooling, heating or hot water making needs, the air conditioner is controlled to run in the corresponding target operating mode. When the target operating mode is cooling or heating mode, the switching status of the control valve group and the four control valves are controlled according to the target operating mode. The switching state of the four-way valve is used to open or close the refrigerant circulation flow path to adjust the indoor temperature. When the target operating mode is to make hot water, the switching state of the control valve group and the switching state of the four-way valve are controlled according to the target operating mode to open or close the refrigerant circulation flow path, and the water in the domestic water tank is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path to increase the water temperature of the domestic water tank to complete the hot water making function. Therefore, in this application, the cooling, heating or hot water making mode is operated by controlling the switching state of different valves, and in the hot water making mode, the water in the domestic water tank is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path, so that the air conditioner can use the waste heat generated when running in the cooling mode or heating mode to produce hot water, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste of the air conditioner during operation, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0065] For example, when a user has a cooling demand, a cooling instruction can be sent to the air conditioner through a remote control, an air conditioning application in a mobile terminal, or a control panel on the air conditioner body through language, gestures, or other operating methods. After receiving the cooling instruction, the target operating mode of the air conditioner is the cooling mode. According to the target operating mode, the switch state of the control valve group is controlled to be a first state, that is, according to the target operating mode, the first valve port and the second valve port of the first multi-way valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the fifth multi-way valve, the sixth multi-way valve, and the seventh multi-way valve are controlled to be connected, and the third port and the fourth port of the four-way valve are controlled to be connected. Alternatively, according to the target operating mode, the switch state of the control valve group is controlled to be a second state, that is, according to the target operating mode, the first valve port and the second valve port of the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the fifth multi-way valve, the sixth multi-way valve, the seventh multi-way valve, and the eighth multi-way valve are controlled to be connected, and the third port and the fourth port of the four-way valve are controlled to be connected, so as to open or close the refrigerant circulation path, thereby realizing the cooling mode and meeting the user's cooling demand.

[0066] Alternatively, when the user has a heating demand, a heating instruction can be sent to the air conditioner through a remote control, an air conditioning application in a mobile terminal, or a control panel on the air conditioner through language, gestures, or other operating methods. After the air conditioner receives the heating instruction, the target operating mode to be operated is the heating mode, and the switch state of the control valve group is controlled to be the third state, that is, the first valve port and the second valve port of the first multi-way valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the sixth multi-way valve, the seventh multi-way valve, and the ninth multi-way valve are controlled to be connected according to the target operating mode, and the first port and the fourth port of the four-way valve are controlled to be connected to conduct or cut off the refrigerant circulation flow path, thereby realizing the heating mode, thereby meeting the user's heating demand; or when the user has a hot water demand, a hot water instruction can be sent to the air conditioner through a remote control, an air conditioning application in a mobile terminal, or a control panel on the air conditioner through language, gestures, or other operating methods. After the air conditioner receives the hot water instruction, the target operating mode to be operated is the hot water mode, and the switch state of the control valve group is controlled to be the fourth state according to the target operating mode, that is, the first multi-way valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the sixth multi-way valve, the seventh multi-way valve, and the ninth multi-way valve are controlled to be connected according to the target operating mode. The first valve port and the second valve port of the valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the sixth multi-way valve, the seventh multi-way valve and the ninth multi-way valve are connected, and the first port is controlled to be connected with the fourth port, or the switch state of the control valve group is controlled to be the fourth state according to the hot water making mode, that is, the first valve port and the second valve port of the first multi-way valve, the second multi-way valve and the tenth multi-way valve are controlled to be connected according to the hot water making mode, and the first port and the fourth port of the four-way valve are controlled to be connected to conduct the heat exchange flow path, and then the water in the domestic water tank is heated by the heat exchange flow path. Exchange to increase the water temperature of the domestic water tank to complete the hot water making function. Therefore, in this application, the cooling, heating or hot water making mode is operated by controlling the switching status of different valves, and in the hot water making mode, the water in the domestic water tank is heat-exchanged with the refrigerant circulation flow path through the heat exchange flow path, so that the air conditioner can use the waste heat generated when running in the cooling mode or the heating mode to produce hot water, which greatly improves the comprehensive energy efficiency and energy recovery of the air conditioner, thereby effectively reducing the energy waste during the operation of the air conditioner, reducing environmental thermal pollution, and saving a lot of electricity bills for users.

[0067] According to the control method of an air conditioner of the present invention, when the target operating mode is cooling, heating, or hot water, the target operating mode is used to control the on / off state of the control valve group and the on / off state of the four-way valve to open or close the refrigerant circulation flow path to adjust the indoor temperature. When operating in the hot water mode, the domestic water tank is heated by heat exchange with the refrigerant circulation flow path through the heat exchange flow path. As a result, the air conditioner of the present application uses the waste heat generated when operating in the cooling mode or heating mode to produce hot water, significantly improving the overall energy efficiency and energy recovery of the air conditioner, thereby effectively reducing energy waste during operation of the air conditioner, reducing environmental thermal pollution, and saving users a large amount of electricity costs. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: The refrigerant circulation flow path allows the refrigerant to circulate in the flow path composed of the vapor-liquid separator, the compressor, the fin heat exchanger, the throttling device, the liquid receiver, the heat exchanger group and the four-way valve; The heat exchanger group includes a plurality of refrigerant branches arranged in parallel, and each refrigerant branch is provided with a heat exchanger; The four-way valve comprises a first port, a second port, a third port and a fourth port, the first port is connected to the heat exchanger group, the second port is connected to the vapor-liquid separator, and the third port is connected to the fin heat exchanger; Domestic water tank, used to store domestic water; a heat exchange flow path, one end of which is connected to the outlet of the compressor, and the other end of which is connected to the fourth port, the domestic water tank being placed on the heat exchange flow path, and the heat exchange flow path being used to realize heat exchange between the domestic water tank and the refrigerant circulation flow path; A control valve group, the control valve group is arranged on the refrigerant circulation flow path, and is used to open or close the refrigerant circulation flow path; A controller, wherein the controller is connected to the control valve group and the four-way valve, and the controller is configured as follows: Acquiring a target operating mode of the air conditioner, wherein the target operating mode is any one of a heating mode, a cooling mode, or a hot water mode; The switch state of the control valve group and the switch state of the four-way valve are controlled according to the target operation mode to adjust the indoor temperature or the water temperature of the domestic water tank.

2. The air conditioner according to claim 1, characterized in that: The control valve group comprises: a first multi-way valve, wherein a first valve port of the first multi-way valve is connected to the third port, and a second valve port of the first multi-way valve is connected to one end of the fin heat exchanger; a second multi-way valve, wherein a first valve port of the second multi-way valve is connected to one end of the throttling device, and a second valve port of the fifth multi-way valve is connected to the other end of the fin heat exchanger; a third multi-way valve, wherein a first valve port of the third multi-way valve is connected to a first end of the heat exchanger group, and a second valve port of the third multi-way valve is connected to the other end of the throttling device and one end of the liquid reservoir; a fourth multi-way valve, wherein a first valve port of the fourth multi-way valve is connected to the second end of the heat exchanger group, and a second valve port of the first multi-way valve is connected to the other end of the liquid reservoir; a fifth multi-way valve, wherein a first valve port of the fifth multi-way valve is connected to the first port, and a second valve port of the fifth multi-way valve is connected to the third end of the heat exchanger group; a sixth multi-way valve, wherein a first valve port of the sixth multi-way valve is connected to the third end of the heat exchanger group; A seventh multi-way valve, wherein a first valve port of the seventh multi-way valve is connected to a second valve port of the sixth multi-way valve, and a second valve port of the seventh multi-way valve is connected to a fourth end of the heat exchanger group.

3. The air conditioner according to claim 2, characterized in that: The target operation mode is the cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured as follows: According to the cooling mode, the switch state of the control valve group is controlled to be a first state, and the third port is controlled to be connected with the fourth port to conduct the cooling flow path so that the indoor temperature reaches a first set temperature; Among them, in the first state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the fifth multi-way valve is connected to the second valve port of the fifth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, and the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve.

4. The air conditioner according to claim 2, characterized in that: The control valve group also includes: An eighth multi-way valve, wherein a first valve port of the eighth multi-way valve is connected to the outlet of the compressor, and a second valve port of the eighth multi-way valve is connected to one end of the fin heat exchanger.

5. The air conditioner according to claim 4, characterized in that: The target operation mode is the cooling mode, the refrigerant circulation flow path includes a cooling flow path, and the controller is specifically configured as follows: According to the cooling mode, the switch state of the control valve group is controlled to be the second state, and the third port is controlled to be connected with the fourth port to conduct the cooling flow path so that the indoor temperature reaches the first set temperature; Among them, in the second state, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the fifth multi-way valve is connected to the second valve port of the fifth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve, and the first valve port of the eighth multi-way valve is connected to the second valve port of the eighth multi-way valve.

6. The air conditioner according to claim 2 or 4, characterized in that: The control valve group also includes: A ninth multi-way valve, wherein the first valve port of the ninth multi-way valve is connected to the outlet of the compressor, and the second valve port of the ninth multi-way valve is connected to the second valve port of the sixth multi-way valve and the first valve port of the seventh multi-way valve.

7. The air conditioner according to claim 6, characterized in that: The target operation mode is the heating mode, the refrigerant circulation flow path includes a heating flow path, and the controller is specifically configured as follows: According to the heating mode, the switch state of the control valve group is controlled to be a third state, and the first port is controlled to be connected to the fourth port to conduct the heating flow path so that the indoor temperature reaches a second set temperature. Among them, in the third state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, the first valve port of the third multi-way valve is connected to the second valve port of the third multi-way valve, the first valve port of the fourth multi-way valve is connected to the second valve port of the fourth multi-way valve, the first valve port of the sixth multi-way valve is connected to the second valve port of the sixth multi-way valve, the first valve port of the seventh multi-way valve is connected to the second valve port of the seventh multi-way valve, and the first valve port of the ninth multi-way valve is connected to the second valve port of the ninth multi-way valve.

8. The air conditioner according to claim 6, characterized in that: The control valve group also includes: A tenth multi-way valve, wherein a first valve port of the tenth multi-way valve is connected to the other end of the heat exchange flow path, and a second valve port of the tenth multi-way valve is connected to one end of the liquid reservoir.

9. The air conditioner according to claim 8, characterized in that: The target operation mode is the hot water making mode, and the controller is specifically configured as follows: According to the hot water making mode, the switch state of the control valve group is controlled to be a fourth state, and the first port is controlled to be connected with the fourth port to conduct the heat exchange flow path, so that heat exchange is performed between the domestic water tank and the heat exchange flow path; Among them, in the fourth state, the first valve port of the first multi-way valve is connected to the second valve port of the first multi-way valve, the first valve port of the second multi-way valve is connected to the second valve port of the second multi-way valve, and the first valve port of the tenth multi-way valve is connected to the second valve port of the tenth multi-way valve.

10. A method for controlling an air conditioner, characterized in that: For the air conditioner according to any one of claims 1 to 9, the control method comprises: Acquiring a target operating mode of the air conditioner, wherein the target operating mode is any one of a heating mode, a cooling mode, or a hot water mode; The switch state of the control valve group and the switch state of the four-way valve are controlled according to the target operation mode to adjust the indoor temperature or the water temperature of the domestic water tank.

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