Air conditioner and control method thereof

Abstract

The invention discloses an air conditioner and a control method thereof, relates to the technical field of air conditioners, and aims to solve the problem of poor heat dissipation effect of a refrigerant radiator of a water source machine on a driving plate in the related technology. The air conditioner comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a reversing valve, a refrigerant radiator, a waterway heat exchanger, a flow regulating valve and a controller, wherein the compressor, the indoor heat exchanger, the outdoor heat exchanger and the reversing valve are mutually connected to form a refrigerant loop; the second end of the refrigerant radiator is connected between a first throttling device and the indoor heat exchanger; the first end of the waterway heat exchanger communicates with the exhaust port, and the second end of the waterway heat exchanger is connected between the refrigerant radiator and the indoor heat exchanger. The first end of the flow regulating valve is connected with the second end of the waterway heat exchanger, and the second end of the flow regulating valve is connected with the first end of the refrigerant radiator; and the controller is used for controlling the opening degree of the flow regulating valve according to the actual refrigerating capacity of the air conditioner when the air conditioner is in a refrigerating mode and the waterway heat exchanger is in a hot water heating mode. The air conditioner is used for adjusting the indoor temperature.

Description

Technical Field

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

[0002] The water source machine uses water as a heat exchange medium to exchange heat with the refrigerant in the air conditioner, so that the air conditioner can heat or cool. At the same time, the air conditioner can also heat water to produce hot water. The water source machine is usually installed in a small space. Therefore, the heat dissipation of the drive plate of the water source machine is usually carried out by refrigerant heat dissipation. Specifically, the refrigerant in the compressor flows through the outdoor heat exchanger and enters the refrigerant, and flows in the refrigerant radiator, so that the refrigerant flowing through the refrigerant radiator exchanges heat with the drive plate to dissipate the heat of the drive plate.

[0003] In the related art, in order to increase the hot water making function of the water source machine, a plate heat exchanger is usually added between the pipe at the compressor outlet and the pipe at one end of the outdoor heat exchanger connected to the indoor heat exchanger, so as to produce hot water through the plate heat exchanger, thereby improving the energy utilization rate of the air conditioner to meet people's living needs.

[0004] However, the above-mentioned setting, when the air conditioner is cooling and hot water is produced through the plate heat exchanger, will cause part of the refrigerant flowing out of the compressor to enter the outdoor heat exchanger and the other part to enter the plate heat exchanger. This will reduce the amount of refrigerant entering the outdoor heat exchanger, thereby reducing the amount of refrigerant entering the refrigerant radiator, which will cause the heat dissipation effect of the refrigerant heat exchanger on the drive plate to deteriorate. Summary of the invention

[0005] The embodiments of the present invention provide an air conditioner and a control method thereof, which solve the problem in the related art that the refrigerant radiator of the water source machine has a poor heat dissipation effect on the driving plate.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] According to a first aspect of the present application, an air conditioner is provided, the air conditioner comprising a compressor, an indoor heat exchanger, an outdoor heat exchanger, a reversing valve, a refrigerant radiator, a water heat exchanger, a flow regulating valve and a controller, the compressor having an air intake port and an air exhaust port; a first end of the outdoor heat exchanger is connected to a first end of the indoor heat exchanger via a first throttling device; the reversing valve is connected to the air intake port, the air exhaust port, a second end of the indoor heat exchanger and a second end of the outdoor heat exchanger, and is used to switch the flow route of the refrigerant so that the air conditioner switches between a heating mode and a cooling mode; the first end of the refrigerant radiator is connected between the first end of the outdoor heat exchanger and the first throttling device, The second end of the refrigerant radiator is connected between the first throttling device and the first end of the indoor heat exchanger; the water heat exchanger includes a refrigerant flow path and a water flow path for heat exchange with each other, the first end of the refrigerant flow path is connected to the exhaust port, and the second end of the refrigerant flow path is connected between the second end of the refrigerant radiator and the first end of the indoor heat exchanger; the water flow path is used for circulating water; the first end of the flow regulating valve is connected to the second end of the refrigerant flow path, and the second end of the flow regulating valve is connected to the first end of the refrigerant radiator; the controller is configured to: when the air conditioner is in cooling mode and the water heat exchanger is in hot water making mode, control the opening of the flow regulating valve according to the actual cooling capacity of the air conditioner.

[0008] The air conditioner provided in the present application is in cooling mode and the water heat exchanger is in hot water making mode. While the refrigerant flowing out of the compressor passes through the reversing valve and enters the outdoor heat exchanger, part of the refrigerant flows into the refrigerant flow path of the water heat exchanger. During the process of flowing through the refrigerant flow path, this part of the refrigerant exchanges heat with the water in the water flow path, thereby heating the water in the water flow path to produce hot water.

[0009] At this time, the refrigerant flowing out of the compressor is diverted by the water heat exchanger, resulting in a decrease in the amount of refrigerant flowing into the outdoor heat exchanger, thereby resulting in a decrease in the amount of refrigerant flowing into the refrigerant radiator. By setting a flow control valve and controlling the opening of the flow control valve according to the actual cooling capacity of the air conditioner through a controller, it is possible to determine whether the amount of refrigerant in the refrigerant radiator is sufficient according to the actual cooling capacity of the air conditioner. If the amount of refrigerant in the refrigerant radiator is insufficient, the flow control valve can be opened to allow the refrigerant flowing out of the water heat exchanger to enter the refrigerant radiator through the flow control valve to replenish the refrigerant in the refrigerant radiator, thereby ensuring that the amount of refrigerant in the refrigerant radiator is sufficient to improve the heat dissipation effect of the refrigerant radiator.

[0010] In some embodiments, the controller is specifically configured to: determine whether the actual cooling capacity of the air conditioner is less than the preset cooling capacity; if not, close the flow regulating valve; if so, fully open the flow regulating valve; by closing the flow regulating valve, the hot water making capacity of the water heat exchanger can be guaranteed, and by fully opening the flow regulating valve, refrigerant can be quickly added to the refrigerant radiator to quickly improve the heat dissipation effect of the refrigerant radiator.

[0011] In some embodiments, the air conditioner also includes a second throttling device, a driving plate and a temperature sensor, the second end of the refrigerant flow path is connected to the pipeline between the second end of the refrigerant radiator and the second end of the indoor heat exchanger through the second throttling device, and the first end of the flow regulating valve is connected to the pipeline between the second throttling device and the second end of the refrigerant flow path; the driving plate is connected to the refrigerant radiator, and the refrigerant radiator is used to dissipate heat from the driving plate; the temperature detection device is connected to the driving plate, and is used to detect the temperature of the driving plate; the controller is also configured to: when the flow regulating valve is opened, determine whether the temperature of the driving plate is greater than or equal to a first preset temperature, wherein the first preset temperature is lower than the alarm temperature of the driving plate; if so, control the second throttling device to close to a first opening; by controlling the opening of the second throttling device according to the temperature of the driving plate, refrigerant can be further added to the refrigerant radiator to ensure that the refrigerant radiator can effectively dissipate heat and cool the driving plate.

[0012] In some embodiments, the controller is further configured to: if the temperature of the driving plate is lower than a first preset temperature, determine whether the temperature of the driving plate is greater than or equal to a second preset temperature, wherein the second preset temperature is lower than the first preset temperature; if so, control the second throttling device to close to a second opening, wherein the second opening is greater than the first opening; control the opening of the second throttling device according to the relationship between the temperature of the driving plate and the second preset temperature, so as to ensure the ability of the water heat exchanger to produce hot water as much as possible, and at the same time add sufficient refrigerant to the refrigerant radiator to ensure the heat dissipation effect of the refrigerant radiator on the driving plate.

[0013] In some embodiments, the controller is also configured to: control the temperature detection device to detect the temperature of the driving plate once every first preset time period, and determine whether the temperature detected by the temperature detection device is greater than or equal to the first preset temperature; by repeatedly detecting the temperature of the driving plate, and determining whether the detected temperature is greater than or equal to the first preset temperature, it is possible to promptly detect whether the heat dissipation effect of the refrigerant radiator on the driving plate has deteriorated, thereby promptly adjusting the amount of refrigerant in the refrigerant radiator.

[0014] In some embodiments, the controller is also configured to: control the temperature detection device to detect the temperature of the driving plate once every second preset time period, and determine whether the temperature detected by the temperature sensor is greater than or equal to the second preset temperature; by repeatedly detecting the temperature of the driving plate, and determining whether the detected temperature is greater than or equal to the second preset temperature, it is possible to further promptly discover whether the heat dissipation effect of the refrigerant radiator on the driving plate has deteriorated, thereby timely adjusting the amount of refrigerant in the refrigerant radiator.

[0015] In some embodiments, the controller is further configured to: when the air conditioner is in heating mode and the water circuit heat exchanger is in hot water making mode, control the flow regulating valve to close; when the indoor unit of the air conditioner is turned off and the water circuit heat exchanger is in hot water making mode, control the flow regulating valve to close; in this way, the refrigerant in the refrigerant radiator can flow normally, so as to ensure the normal operation of the air conditioner and the heat dissipation effect of the refrigerant radiator.

[0016] In some embodiments, the reversing valve has a first valve port, a second valve port, a third valve port and a fourth valve port; the first valve port is connected to the exhaust port, the third valve port is connected to the intake port, the fourth valve port is connected to the second end of the indoor heat exchanger, and the second valve port is connected to the second end of the outdoor heat exchanger; when the first valve port is connected to the second valve port, the third valve port is connected to the fourth valve port, and the outdoor heat exchanger and the water heat exchanger serve as a condenser, and the indoor heat exchanger serves as an evaporator, the air conditioner is in a cooling mode, and the water heat exchanger is in a hot water making mode; when the first valve port is connected to the fourth valve port, the third valve port is connected to the second valve port, and the indoor heat exchanger and the water heat exchanger serve as a condenser, and the outdoor heat exchanger serves as an evaporator, the air conditioner is in a heating mode, and the water heat exchanger is in a hot water making mode; through the setting of the reversing valve, the flow route of the refrigerant can be switched stably and reliably, thereby switching the working mode of the air conditioner.

[0017] In some embodiments, the air conditioner also includes a stop valve, which is connected between the second end of the indoor heat exchanger and the fourth valve port; when the first valve port is connected to the fourth valve port, the third valve port is connected to the second valve port, and the water heat exchanger serves as a condenser, and the outdoor heat exchanger serves as an evaporator, the stop valve is closed, and the indoor unit is turned off, the air conditioner is in the indoor unit turn-off mode, and the water heat exchanger is in the hot water making mode; by setting the stop valve, it is possible to prevent the refrigerant from flowing into the indoor heat exchanger when the indoor unit is turned off, thereby ensuring the amount of refrigerant in the water heat exchanger to improve the ability of the water heat exchanger to make hot water.

[0018] According to a second aspect of the present application, a method for controlling an air conditioner is provided. The air conditioner includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a reversing valve, a refrigerant radiator, a water heat exchanger, a flow regulating valve and a controller. The compressor has an air intake port and an air exhaust port. The first end of the outdoor heat exchanger is connected to the first end of the indoor heat exchanger through a first throttling device. The reversing valve is connected to the air intake port, the air exhaust port, the second end of the indoor heat exchanger and the second end of the outdoor heat exchanger, and is used to switch the flow route of the refrigerant so that the air conditioner switches between a heating mode and a cooling mode. The first end of the refrigerant radiator is connected between the first end of the outdoor heat exchanger and the first throttling device. , the second end of the refrigerant radiator is connected between the first throttling device and the first end of the indoor heat exchanger; the water heat exchanger includes a refrigerant flow path and a water flow path for heat exchange with each other, the first end of the refrigerant flow path is connected to the exhaust port, and the second end of the refrigerant flow path is connected between the second end of the refrigerant radiator and the first end of the indoor heat exchanger; the water flow path is used to circulate water; the first end of the flow regulating valve is connected to the second end of the refrigerant flow path, and the second end of the flow regulating valve is connected to the first end of the refrigerant radiator; the control method includes: when the air conditioner is in cooling mode and the water heat exchanger is in hot water making mode, controlling the opening of the flow regulating valve according to the actual cooling capacity of the air conditioner.

[0019] It should be noted that the technical effects brought about by the implementation method of the second aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the schematic diagrams of the connection relationship of the various components of the air conditioner in the embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the refrigerant flow direction when the air conditioner is in cooling mode in the embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the refrigerant flow direction when the air conditioner is in heating mode in the embodiment of the present application;

[0023] Figure 4 This is the second schematic diagram of the connection relationship of the components of the air conditioner in the embodiment of the present application;

[0024] Figure 5 This is the third schematic diagram of the connection relationship of the components of the air conditioner in the embodiment of the present application;

[0025] Figure 6 This is a fourth schematic diagram of the connection relationship of the components of the air conditioner in the embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the refrigerant flow direction when the air conditioner is in the indoor off mode and the water heat exchanger is in the hot water making mode in the embodiment of the present application;

[0027] Figure 8 This is a schematic diagram of the refrigerant flow direction when the air conditioner is in the heating mode and the water heat exchanger is in the hot water mode in the embodiment of the present application;

[0028] Fig. 9 This is a schematic diagram of the refrigerant flow direction when the air conditioner is in cooling mode and the water heat exchanger is in hot water making mode in the embodiment of the present application;

[0029] Fig.10 This is a fifth schematic diagram of the connection relationship of the components of the air conditioner in the embodiment of the present application;

[0030] Fig.11 This is a schematic diagram of the control process of the controller when the air conditioner is in the heating mode and the water circuit heat exchanger is in the hot water mode in the embodiment of the present application;

[0031] Fig.12 This is a schematic diagram of the control process of the controller when the air conditioner is in the indoor off mode and the water circuit heat exchanger is in the hot water making mode in the embodiment of the present application;

[0032] Fig.13 This is one of the flow charts of the air conditioner control method in the embodiment of the present application;

[0033] Fig.14 This is a second flow chart of the air conditioner control method in the embodiment of the present application;

[0034] Fig.15 This is the third flow chart of the air conditioner control method in the embodiment of the present application.

[0035] Reference numerals:

[0036] 1-indoor unit; 11-indoor heat exchanger; 12-fourth throttling device;

[0037] 2-outdoor unit; 21-compressor; 211-intake port; 212-exhaust port; 22-outdoor heat exchanger; 23-reversing valve; 231-first valve port; 232-second valve port; 233-third valve port; 234-fourth valve port; 24-first throttling device; 25-refrigerant radiator; 26-third throttling device; 27-water heat exchanger; 28-second throttling device; 29-flow regulating valve;

[0038] 3-Stop valve. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0043] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0044] The water source machine realizes the heating or cooling function of the air conditioner by exchanging heat between water and the refrigerant of the air conditioner. With the development of society, people's demand for multifunctional water source machines is getting higher and higher.

[0045] Based on this, the embodiment of the present application provides an air conditioner, such as Figure 1 As shown, the air conditioner includes an indoor unit 1 and an outdoor unit 2. The indoor unit 1 includes an indoor heat exchanger 11, and the outdoor unit 2 includes a compressor 21, an outdoor heat exchanger 22 and a reversing valve 23.

[0046] The compressor 21 has an air intake port 211 and an air exhaust port 212. Specifically, the air intake port 211 of the compressor 21 is used for air intake, and the refrigerant enters the compression chamber of the compressor 21 through the air intake port 211 to be compressed to form a high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant gas is then discharged from the compressor 21 through the air exhaust port 212 of the compressor 21, and then enters the air conditioner for refrigerant circulation.

[0047] The compressor 21 may be a scroll compressor 21 , a rotor compressor 21 , a screw compressor 21 or other types of compressors 21 .

[0048] The first end of the outdoor heat exchanger 22 is connected to the first end of the indoor heat exchanger 11 through the first throttling device 24. The first throttling device 24 can be a capillary tube, an electronic expansion valve or a thermal expansion valve.

[0049] The reversing valve 23 is connected to the air intake port 211, the air exhaust port 212, the second end of the indoor heat exchanger 11 and the second end of the outdoor heat exchanger 22, so that the compressor 21, the reversing valve 23, the outdoor heat exchanger 22, the first throttling device 24 and the indoor heat exchanger 11 are connected through pipes to form a circulation loop of the refrigerant.

[0050] The reversing valve 23 is used to switch the flow route of the refrigerant so that the air conditioner can be switched between a heating mode and a cooling mode.

[0051] Specifically, Figure 1 As shown, the reversing valve 23 has a first valve port 231, a second valve port 232, a third valve port 233 and a fourth valve port 234. The first valve port 231 is connected to the exhaust port 212, the third valve port 233 is connected to the suction port 211, the fourth valve port 234 is connected to the second end of the indoor heat exchanger 11, and the second valve port 232 is connected to the second end of the outdoor heat exchanger 22.

[0052] The first valve port 231 can be connected to one of the second valve port 232 and the fourth valve port 234 in a switching manner, and the third valve port 233 can be connected to the other of the second valve port 232 and the fourth valve port 234 in a switching manner. That is, when the first valve port 231 is connected to the second valve port 232, the third valve port 233 is connected to the fourth valve port 234; when the first valve port 231 is connected to the fourth valve port 234, the third valve port 233 is connected to the second valve port 232.

[0053] For example, Figure 2 As shown, when the first valve port 231 is connected to the second valve port 232 and the third valve port 233 is connected to the fourth valve port 234, the outdoor heat exchanger 22 can be used as a condenser and the indoor heat exchanger 11 can be used as an evaporator. At this time, the air conditioner is in cooling mode.

[0054] In the cooling mode of the air conditioner, the refrigerant is compressed by the compressor 21 to form a high-temperature and high-pressure gaseous refrigerant. After the high-temperature and high-pressure gaseous refrigerant flows out of the exhaust port 212 of the compressor 21, it enters the first valve port 231 of the reversing valve 23 and flows out from the second valve port 232 of the reversing valve 23. The refrigerant flowing out of the second valve port 232 of the reversing valve 23 flows to the outdoor heat exchanger 22, and after heat exchange in the outdoor heat exchanger 22, it is condensed into a high-temperature and high-pressure liquid refrigerant, and then flows out of the outdoor heat exchanger 22.

[0055] The refrigerant flowing out of the outdoor heat exchanger 22 flows into the first throttling device 24, and forms a low-temperature and low-pressure liquid refrigerant after being throttled and reduced in pressure by the first throttling device 24. The low-temperature and low-pressure liquid refrigerant flows out of the first throttling device 24 and enters the indoor heat exchanger 11, and forms a low-temperature and low-pressure gaseous refrigerant after heat exchange in the indoor heat exchanger 11.

[0056] After the low-temperature and low-pressure gaseous refrigerant flows out of the indoor heat exchanger 11, it flows through the fourth valve port 234 of the reversing valve 23 and the third valve port 233 of the reversing valve 23 in sequence, and then enters the compressor 21 from the air intake port 211 of the compressor 21 to be compressed again.

[0057] For example, Figure 3 As shown, when the first valve port 231 is connected to the fourth valve port 234 and the third valve port 233 is connected to the second valve port 232, the indoor heat exchanger 11 can be used as a condenser and the outdoor heat exchanger 22 can be used as an evaporator. At this time, the air conditioner is in heating mode.

[0058] In the heating mode of the air conditioner, the refrigerant is compressed by the compressor 21 to form a high-temperature and high-pressure gaseous refrigerant. After the high-temperature and high-pressure gaseous refrigerant flows out of the exhaust port 212 of the compressor 21, it enters the first valve port 231 of the reversing valve 23 and flows out from the fourth valve port 234 of the reversing valve 23. The refrigerant flowing out of the fourth valve port 234 of the reversing valve 23 flows to the indoor heat exchanger 11, and after heat exchange in the indoor heat exchanger 11, it condenses into a high-temperature and high-pressure liquid refrigerant, and then flows out of the indoor heat exchanger 11.

[0059] The refrigerant flowing out of the indoor heat exchanger 11 flows into the first throttling device 24, and forms a low-temperature and low-pressure liquid refrigerant after being throttled and reduced in pressure by the first throttling device 24. The low-temperature and low-pressure liquid refrigerant flows out of the first throttling device 24 and enters the outdoor heat exchanger 22, and forms a low-temperature and low-pressure gaseous refrigerant after heat exchange in the outdoor heat exchanger 22.

[0060] After the low-temperature and low-pressure gaseous refrigerant flows out of the outdoor heat exchanger 22, it flows through the second valve port 232 of the reversing valve 23 and the third valve port 233 of the reversing valve 23 in sequence, and then enters the compressor 21 from the air intake port 211 of the compressor 21 to be compressed again.

[0061] The operation of the air conditioner is controlled by the driver board. Therefore, the driver board is also in working state when the air conditioner is running. The driver board will generate heat when working. If the temperature of the driver board is too high, it will cause the driver board to malfunction and affect the normal operation of the air conditioner. Therefore, a heat dissipation device is set to dissipate heat and cool down the driver board.

[0062] Among them, the commonly used heat dissipation device is a refrigerant radiator, which is fixedly connected to the driving board. The refrigerant of the air conditioner system is circulated in the refrigerant radiator so that the refrigerant flowing through the refrigerant radiator exchanges heat with the driving board, thereby dissipating heat from the driving board.

[0063] Specifically, Figure 4 As shown, the outdoor unit 2 further includes a refrigerant radiator 25 and a drive board (not shown in the figure). The drive board is connected to the refrigerant radiator 25, and the refrigerant radiator 25 is used to dissipate heat from the drive board.

[0064] The first end of the refrigerant radiator 25 is connected to the pipeline between the first end of the outdoor heat exchanger 22 and the first throttling device 24 , and the second end of the refrigerant radiator 25 is connected to the pipeline between the first throttling device 24 and the first end of the indoor heat exchanger 11 .

[0065] In addition, the outdoor unit 2 further includes a third throttling device 26 , and the first end of the refrigerant radiator 25 is connected to the pipeline between the first end of the outdoor heat exchanger 22 and the first throttling device 24 through the third throttling device 26 .

[0066] In this way, when the air conditioner is in cooling mode, part of the high-temperature and high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 22 will be diverted to the third throttling device 26 when flowing through the first throttling device 24, and will become a low-temperature and low-pressure refrigerant after throttling and reducing the pressure by the third throttling device 26. After flowing out of the third throttling device 26, this part of the refrigerant flows into the refrigerant radiator 25, and after flowing through the refrigerant radiator 25, it merges with the refrigerant flowing through the first throttling device 24 in the pipeline between the first throttling device 24 and the indoor heat exchanger 11 and enters the indoor heat exchanger 11.

[0067] In addition, if Figure 4 As shown, the indoor unit 1 further includes a fourth throttling device 12. The fourth throttling device 12 is located in the indoor unit 1 and is connected to a pipeline between a first end of the indoor heat exchanger 11 and a second end of the refrigerant radiator 25.

[0068] In this way, when the air conditioner is in heating mode, the high-temperature and high-pressure liquid refrigerant flowing out of the indoor heat exchanger 11 will first flow through the fourth throttling device 12, and will be throttled and reduced in pressure by the fourth throttling device 12 to form a low-temperature and low-pressure refrigerant. When the low-temperature and low-pressure refrigerant flows through the first throttling device 24, part of it will be diverted to the refrigerant radiator 25, and after flowing through the refrigerant radiator 25, it will merge with the refrigerant flowing through the first throttling device 24 in the pipeline between the first throttling device 24 and the indoor heat exchanger 11 and then enter the outdoor heat exchanger 22.

[0069] In the heating mode and cooling mode of the air conditioner, the refrigerant entering the refrigerant radiator 25 is low-temperature and low-pressure refrigerant after cooling, so the temperature of the refrigerant is relatively low. During the process of the refrigerant flowing through the refrigerant radiator 25, heat exchange is performed with the drive plate, which can reduce the temperature of the drive plate, thereby cooling the drive plate.

[0070] Among them, the third throttling device 26 and the fourth throttling device 12 can both be capillaries, electronic expansion valves, thermal expansion valves, etc.

[0071] The number of indoor units 1 may be one or more. Here, the description is made by taking the number of indoor units 1 as an example, that is, the air conditioner is a multi-split air conditioner. Figure 4 As shown, a plurality of indoor units 1 are arranged in parallel, each of the indoor units 1 is provided with an indoor heat exchanger 11, and a fourth throttling device 12 is provided on the pipeline between the first end of the indoor heat exchanger 11 of each indoor unit 1 and the second end of the refrigerant radiator 25.

[0072] On this basis, in order to improve the heat recovery effect of the air conditioning system to produce hot water and meet people's living needs, such as Figure 5 As shown, the outdoor unit 2 also includes a water heat exchanger 27 .

[0073] The water heat exchanger 27 includes a refrigerant flow path and a water flow path for exchanging heat with each other, a first end of the refrigerant flow path is connected to the exhaust port 212, and a second end of the refrigerant flow path is connected to the pipeline between the second end of the refrigerant radiator 25 and the first end of the indoor heat exchanger 11. The water flow path is used to circulate water.

[0074] In this way, the high-temperature and high-pressure refrigerant flowing out from the exhaust port 212 of the compressor 21 will flow into the reversing valve 23 while also flowing into the refrigerant flow path of the water heat exchanger 27, and exchange heat with the water in the water flow path while flowing through the refrigerant flow path.

[0075] Since the refrigerant entering the refrigerant flow path is a high-temperature and high-pressure refrigerant compressed by the compressor 21, the refrigerant flowing through the refrigerant flow path can heat the water in the water flow path to produce hot water. The water outlet of the water flow path is connected to the water-using device so that the hot water produced by the water heat exchanger flows into the water-using device for use by the user.

[0076] Among them, the water-using device can be floor heating, water tank and the like.

[0077] Through the above-mentioned setting of the water heat exchanger 27, the water heat exchanger 27 is used as a condenser. Hot water can be produced through the water heat exchanger 27 alone when the indoor unit 1 is turned off, or hot water can be produced through the water heat exchanger 27 when the air conditioner is in cooling mode or heating mode.

[0078] Specifically, Figure 6 As shown, the air conditioner further includes a stop valve 3. The stop valve 3 is connected between the second end of the indoor heat exchanger 11 and the fourth valve port 234 of the reversing valve 23.

[0079] The outdoor unit 2 further includes a second throttling device 28. The second end of the refrigerant flow path of the water heat exchanger 27 is connected to the pipeline between the second end of the refrigerant radiator 25 and the second end of the indoor heat exchanger 11 through the second throttling device 28.

[0080] The second throttling device 28 may be an electronic expansion valve or the like.

[0081] In some embodiments, Figure 7 As shown, when the indoor unit 1 is shut down and the water circuit heat exchanger 27 is in the hot water making mode, the first valve port 231 of the reversing valve 23 is connected to the fourth valve port 234, the third valve port 233 is connected to the second valve port 232, and the stop valve 3 can be closed.

[0082] At this time, the high-temperature and high-pressure gaseous refrigerant flowing out of the compressor 21 will flow into the refrigerant flow path of the water heat exchanger 27, and exchange heat with the water in the water flow path of the water heat exchanger 27, thereby being converted into a high-temperature and high-pressure liquid refrigerant flowing out of the refrigerant flow path.

[0083] The refrigerant flowing out of the refrigerant flow path enters the second throttling device 28, and forms a low-temperature and low-pressure liquid refrigerant after being throttled and reduced in pressure by the second throttling device 28. The refrigerant flowing out of the second throttling device 28 is divided into two paths, one of which flows through the first throttling device 24 and enters the outdoor heat exchanger 22, and the other flows through the refrigerant radiator 25 and the third throttling device 26 in sequence and enters the outdoor heat exchanger 22.

[0084] The refrigerant entering the outdoor heat exchanger 22 evaporates into a low-temperature and low-pressure gaseous refrigerant, flows out of the outdoor heat exchanger 22, and then flows through the second valve port 232 and the third valve port 233 of the reversing valve 23 in sequence and then enters the air intake port 211 of the compressor 21.

[0085] In this way, when the indoor environment does not need cooling or heating, the water heat exchanger 27 and the outdoor heat exchanger 22 can be operated separately to produce hot water for people to use, thereby increasing the function of the air conditioner and improving the heat recovery effect of the air conditioner.

[0086] In addition, a stop valve 3 may also be provided on the pipeline between the first end of the indoor heat exchanger 11 and the first end of the outdoor heat exchanger 22. At this time, the first end of the second throttling device 28 is connected to the water heat exchanger 27, and the second end of the second throttling device 28 is connected to the pipeline between the stop valve 3 and the second end of the refrigerant radiator 25. When the indoor unit 1 is not working, the stop valve 3 may also be closed to prevent the refrigerant from entering the indoor heat exchanger 11.

[0087] In other embodiments, the air conditioner is in heating mode, and the water circuit heat exchanger 27 is in hot water mode.

[0088] like Figure 8 As shown, the refrigerant flowing out of the compressor 21 will be divided into two paths, one of which flows through the first valve port 231 of the reversing valve 23, the fourth valve port 234 of the reversing valve 23 and the indoor heat exchanger 11 in sequence, and the other flows into the refrigerant flow path of the water heat exchanger 27, and exchanges heat with the water in the water flow path of the water heat exchanger 27 before flowing out of the refrigerant flow path.

[0089] The refrigerant flowing out of the refrigerant flow path flows through the second throttling device 28 and merges with the refrigerant flowing out of the indoor heat exchanger 11, and then is divided into two paths again, one path flows through the first throttling device 24 and enters the outdoor heat exchanger 22, and the other path flows through the refrigerant radiator 25 and enters the outdoor heat exchanger 22.

[0090] The refrigerant flowing out of the outdoor heat exchanger 22 flows through the second valve port 232 and the third valve port 233 of the reversing valve 23 in sequence and then flows back to the suction port 211 of the compressor 21 .

[0091] In some other embodiments, the air conditioner is in cooling mode and the water circuit heat exchanger 27 is in hot water making mode.

[0092] like Fig. 9 As shown, the refrigerant flowing out of the compressor 21 will be divided into two paths, one of which flows into the refrigerant flow path of the water heat exchanger 27, and flows out of the refrigerant flow path after heat exchange with the water in the water flow path of the water heat exchanger 27. The refrigerant flowing out of the refrigerant flow path flows through the second section device and then flows into the indoor heat exchanger 11.

[0093] The other path flows through the first valve port 231 of the reversing valve 23, the second valve port 232 of the reversing valve 23 and the outdoor heat exchanger 22 in sequence, and then is divided into two paths again, one of which flows through the first throttling device 24, and the other flows through the third throttling device 26 and the refrigerant radiator 25 in sequence, and then merges with the refrigerant flowing out of the first throttling device 24 and flows into the indoor heat exchanger 11.

[0094] The refrigerant flowing out of the indoor heat exchanger 11 flows through the fourth valve port 234 and the third valve port 233 of the reversing valve 23 in sequence and then flows back to the suction port 211 of the compressor 21 .

[0095] When the air conditioner is in cooling mode and the water circuit heat exchanger 27 is in hot water mode, part of the refrigerant flowing out of the compressor 21 will flow from the water circuit heat exchanger 27 into the indoor heat exchanger 11, and the other part will flow through the outdoor heat exchanger 22 and enter the refrigerant radiator 25. This will result in a small amount of refrigerant entering the refrigerant radiator 25. If the demand for hot water is large, the amount of refrigerant flowing through the water circuit heat exchanger 27 is large, which may cause insufficient heat exchange between the refrigerant flowing through the refrigerant radiator 25 and the drive plate, resulting in poor heat dissipation and cooling effect of the refrigerant radiator 25 on the drive plate.

[0096] Based on this, Fig.10 As shown, the outdoor unit 2 further includes a flow regulating valve 29. A first end of the flow regulating valve 29 is connected to a second end of the refrigerant flow path of the water heat exchanger 27, and a second end of the flow regulating valve 29 is connected to a first end of the refrigerant radiator 25. Specifically, a first end of the flow regulating valve 29 is connected to a pipeline between the second throttling device 28 and the second end of the refrigerant flow path, and a second end of the flow regulating valve 29 is connected to a pipeline between the third throttling device 26 and a first end of the outdoor heat exchanger 22.

[0097] In this way, when the amount of refrigerant in the refrigerant radiator 25 is insufficient, the flow regulating valve 29 can be opened to allow the refrigerant flowing out of the water heat exchanger 27 to flow through the flow regulating valve 29 and enter the third throttling device 26 for throttling and pressure reduction before entering the refrigerant radiator 25, so as to increase the amount of refrigerant in the refrigerant radiator 25, thereby improving the heat dissipation and cooling effect of the refrigerant radiator 25 on the drive plate.

[0098] The opening and closing of the flow regulating valve 29 can be controlled by the controller of the air conditioner. Specifically, the controller is electrically connected to the flow regulating valve 29, and the controller is configured to control the opening of the flow regulating valve 29 according to the actual cooling capacity of the air conditioner when the air conditioner is in cooling mode and the water circuit heat exchanger 27 is in hot water making mode.

[0099] By controlling the opening of the flow regulating valve 29 according to the cooling capacity of the air conditioner through the controller, the amount of hot water produced by the water heat exchanger 27 can be guaranteed to the greatest extent, and the flow of the refrigerant in the refrigerant radiator 25 can be adjusted in time to ensure the heat dissipation effect of the refrigerant radiator 25 on the drive board, thereby ensuring the normal operation of the drive board.

[0100] The flow regulating valve 29 may be an electric ball valve, an electric butterfly valve, a solenoid valve, or the like.

[0101] Exemplarily, the flow regulating valve 29 may be an electric ball valve. The opening of the flow regulating valve 29 may be adjusted according to the percentage of the actual cooling capacity of the air conditioner to the total cooling capacity of the air conditioner.

[0102] For example, when the actual cooling capacity of the air conditioner is less than 20% of the total cooling capacity of the air conditioner, the opening of the electric ball valve is 0 (that is, the electric ball valve is closed); when the actual cooling capacity of the air conditioner is greater than or equal to 20% and less than 30%, the opening of the electric ball valve is 30% (the total opening is 100%); when the actual cooling capacity of the air conditioner is greater than or equal to 30% and less than 40%, the opening of the electric ball valve is 60%; when the actual cooling capacity of the air conditioner is greater than or equal to 40%, the opening of the electric ball valve is 100% (that is, the flow regulating valve 29 is fully open).

[0103] Exemplarily, the flow regulating valve 29 may be a solenoid valve, which has only two states: fully open and fully closed.

[0104] At this time, the controller is specifically configured to: determine whether the actual cooling capacity of the air conditioner is less than the preset cooling capacity; if not, close the flow regulating valve 29; if so, fully open the flow regulating valve 29.

[0105] It should be noted that if the cooling capacity of the air conditioner is greater than or equal to the preset cooling capacity, it means that the cooling capacity of the air conditioner is sufficient, that is, the amount of refrigerant flowing through the outdoor heat exchanger 22 and the refrigerant radiator 25 is sufficient. At this time, the amount of refrigerant flowing through the refrigerant radiator 25 can effectively dissipate the heat of the drive plate, and there is no need to open the flow regulating valve 29 to ensure that the water heat exchanger 27 produces hot water.

[0106] If the cooling capacity of the air conditioner is less than the preset cooling capacity, it means that the cooling capacity of the air conditioner is insufficient, that is, the amount of refrigerant flowing through the outdoor heat exchanger 22 and the refrigerant radiator 25 is insufficient. At this time, the amount of refrigerant flowing through the refrigerant radiator 25 can have a poor heat dissipation effect on the drive plate. Therefore, it is necessary to open the flow regulating valve 29 to add refrigerant to the refrigerant radiator 25.

[0107] In addition, when the temperature of the driving plate is low, the flow regulating valve 29 is closed and the second throttling device 28 is fully open, so that the water circuit heat exchanger 27 can produce hot water to the maximum extent, thereby improving the heat recovery effect of the air conditioner.

[0108] The preset cooling capacity can be set according to the actual conditions of different air conditioners. For example, the preset cooling capacity can be 15%, 20%, 25%, 30% or the like of the total cooling capacity of the air conditioner.

[0109] The solenoid valve has a fast response speed. The flow control valve 29 uses a solenoid valve, which can quickly switch the refrigerant flowing through the water heat exchanger 27 to the refrigerant radiator 25 to quickly increase the refrigerant amount of the refrigerant radiator 25, thereby quickly dissipating heat and cooling the drive plate.

[0110] Furthermore, when the actual cooling capacity of the air conditioner is less than the preset cooling capacity, fully opening the flow regulating valve 29 can replenish refrigerant into the refrigerant radiator 25 to the maximum extent, so as to quickly improve the heat dissipation effect of the refrigerant radiator 25, thereby quickly driving the board to cool down.

[0111] It should be noted that the air conditioner is a multi-split unit, that is, the number of indoor units 1 of the air conditioner is multiple, and the cooling capacity of each indoor unit 1 is determined. The total cooling capacity of the air conditioner is the sum of the cooling capacities of the multiple indoor units 1. The actual cooling capacity of the air conditioner can be obtained according to the number of indoor units 1 actually running when the air conditioner is working, that is, the sum of the cooling capacities of the indoor units 1 actually running when the air conditioner is working. The preset cooling capacity of the air conditioner can be set by presetting the number of indoor units 1 running when the air conditioner is working.

[0112] In some embodiments, the air conditioner further comprises a temperature detection device, which is connected to the driving board and used to detect the temperature of the driving board. The temperature detection device is electrically connected to the controller and used to transmit the detected temperature information to the controller.

[0113] Wherein, the temperature detection device may be a temperature sensor.

[0114] When the flow regulating valve 29 is opened, the opening of the second throttling device 28 can also be controlled by the temperature of the driving plate to further adjust the refrigerant flow in the refrigerant radiator 25. Specifically, the air conditioner is further configured to: when the flow regulating valve 29 is opened, determine whether the temperature of the driving plate is greater than or equal to a first preset temperature, wherein the first preset temperature is less than the alarm temperature of the driving plate; if so, control the second throttling device 28 to close to the first opening.

[0115] The alarm temperature of the driving board is the temperature at which the driving board may be damaged due to heat. The first opening of the second throttling device 28 is less than the maximum opening of the second throttling device 28 (ie, the opening is 100%).

[0116] The first preset temperature can be set according to the actual situation of the driving board. For example, the first preset temperature is 80% of the alarm temperature of the driving board. For example, if the alarm temperature of the driving board is 107°C, the first preset temperature is 86°C.

[0117] For example, the first preset temperature is 70% of the alarm temperature of the driving board. For example, if the alarm temperature of the driving board is 107°C, the first preset temperature is 75°C.

[0118] When the flow regulating valve 29 is open, especially when it is fully open, if the temperature of the driving plate is still greater than or equal to the first preset temperature, it means that the temperature of the driving plate is close to the alarm temperature, that is, the temperature of the driving plate is still at a relatively high temperature, indicating that the amount of refrigerant in the refrigerant radiator 25 is still insufficient. At this time, the opening of the second throttling device 28 can be reduced to allow more refrigerant flowing out of the water circuit heat exchanger 27 to enter the refrigerant radiator 25 through the flow regulating valve 29, so as to further improve the heat dissipation effect of the refrigerant radiator 25 on the driving plate.

[0119] The size of the first opening can be set according to the first preset temperature. When the first preset temperature is high, the first opening can be set to be smaller. When the first preset temperature is low, the first opening can be set to be larger.

[0120] For example, the first preset temperature is 86°C, and the first opening can be set to 40% of the second throttling device 28 being fully open. At this time, when the temperature of the drive plate rises to 86°C, the second throttling device 28 is closed to its opening of 40% (i.e., the second throttling device 28 is open 40%).

[0121] For example, the first preset temperature is 75°C, and the first opening is set to 50% of the second throttling device 28 being fully open. At this time, when the temperature of the drive plate rises to 75°C, the second throttling device 28 is closed to its opening of 50% (i.e., the second throttling device 28 is opened 50%).

[0122] On this basis, when judging whether the temperature of the driving plate is greater than or equal to the first preset temperature, if the judgment result is no, the second throttling device 28 can be controlled not to operate, that is, the second throttling device 28 is not closed, that is, the second throttling device 28 is still in a fully open state.

[0123] If the judgment result is no, the temperature of the driving plate may be further detected. Specifically, the controller is further configured to: if the temperature of the driving plate is lower than the first preset temperature, determine whether the temperature of the driving plate is greater than or equal to the second preset temperature, wherein the second preset temperature is lower than the first preset temperature; if so, control the second throttling device 28 to close to the second opening, wherein the second opening is greater than the first opening.

[0124] When the temperature of the driving board is lower than the first preset temperature, it indicates that the heat dissipation and cooling effect of the refrigerant in the refrigerant radiator 25 on the driving board can meet the demand of the driving board, that is, the temperature of the driving board is within the safe temperature range. However, at this time, the heat dissipation effect of the refrigerant radiator 25 on the driving board may not be in the best state, that is to say, the temperature of the driving board may rise at any time and even reach the alarm temperature.

[0125] At this time, by setting the second preset temperature so that the second preset temperature is lower than the first preset temperature, when it is judged that the temperature of the driving plate is lower than the first preset temperature, the temperature of the driving plate is further judged. If the temperature of the driving plate is greater than or equal to the second preset temperature, the opening of the second throttling device 28 can be appropriately closed, that is, the second throttling device 28 is closed to the second opening, and the second opening is greater than the first opening, so as to appropriately increase the flow of the refrigerant in the refrigerant radiator 25, thereby maintaining the heat dissipation and cooling effect of the refrigerant radiator 25 on the driving plate, or appropriately increase the heat dissipation and cooling effect of the refrigerant radiator 25 on the driving plate, so as to avoid the temperature of the driving plate from rising, and at the same time, it can also ensure that the water circuit heat exchanger 27 has a greater ability to produce hot water.

[0126] The second preset temperature can be set according to the first preset temperature and the alarm temperature of the driving plate, and the second opening can be set according to the second preset temperature. For example, when the first preset temperature is set to 80% of the alarm temperature of the driving plate, the second preset temperature can be set to 70% of the alarm temperature of the driving plate, and the first opening can be set to 40% when the second throttling device 28 is fully opened, and the second opening can be set to 60% when the second throttling device 28 is fully opened.

[0127] For example, if the alarm temperature of the driving plate is 107°C, the first preset temperature is 86°C, and the second preset temperature is 75°C. At this time, if the controller determines that the temperature of the driving plate is greater than 86°C, the second throttling device 28 is controlled to be closed to an opening of 40% (i.e., the opening of the second throttling device 28 is 40%); if the detector determines that the temperature of the driving plate is less than 86°C, but greater than or equal to 75°C, the second throttling device 28 is controlled to be closed to an opening of 60% (i.e., the opening of the second throttling device 28 is 60%).

[0128] In this way, while ensuring that the water heat exchanger 27 produces hot water, the refrigerant flow in the refrigerant radiator 25 can be controlled more accurately and reasonably to ensure the heat dissipation and cooling effect of the refrigerant radiator 25 on the drive plate.

[0129] In some embodiments, in order to enable the controller to timely determine the amount of refrigerant flowing through the refrigerant radiator 25, the controller can be configured to: control the temperature detection device to detect the temperature of the drive board once every first preset time period, and determine whether the temperature detected by the temperature detection device is greater than or equal to the first preset temperature.

[0130] That is, when the flow regulating valve 29 is open, the controller controls the temperature detection device to repeatedly detect the temperature of the driving plate every first preset time period, and the controller repeatedly determines whether the detected temperature is greater than or equal to the first preset temperature.

[0131] In this way, the controller can monitor the temperature changes of the driving plate in time, so that when the temperature of the driving plate rises to greater than or equal to the first preset temperature, the controller can promptly control the opening of the second throttling device 28 and replenish refrigerant into the refrigerant radiator 25 in time, so that the refrigerant radiator 25 can dissipate heat and cool the driving plate in time.

[0132] Among them, the first preset duration can be 20s, 30s, 40s, 50s, etc.

[0133] In addition, the controller is further configured to: control the temperature detection device to detect the temperature of the driving board once every second preset time period, and determine whether the temperature detected by the temperature sensor is greater than or equal to the second preset temperature.

[0134] That is to say, when it is detected that the temperature of the driving plate is lower than the first preset temperature, the controller controls the temperature detection device to repeatedly detect the temperature of the driving plate every second preset time period, and the controller repeatedly determines whether the detected temperature is greater than or equal to the second preset temperature.

[0135] In this way, the controller can promptly determine whether the temperature of the drive plate is greater than or equal to the second preset temperature, so as to replenish refrigerant into the refrigerant radiator 25 in time, thereby ensuring the ability of the water heat exchanger 27 to produce hot water while controlling the temperature of the drive plate within a safe range.

[0136] The second preset duration may be the same as the first preset duration, or may be different from the first preset duration. For example, the second preset duration may be 20s, 30s, 40s, 50s, etc.

[0137] In some embodiments, the controller is further configured to control the flow regulating valve 29 to be closed when the air conditioner is in heating mode and the water circuit heat exchanger 27 is in hot water making mode.

[0138] like Fig.11 As shown, the specific control process of the air conditioner is: after receiving the instruction to adjust the air conditioner to the heating mode and the water circuit heat exchanger 27 to the hot water making mode, detect whether the flow regulating valve 29 is closed. If so, control the air conditioner to run in the heating mode and control the water circuit heat exchanger 27 to run in the hot water making mode. If not, close the flow regulating valve 29, and then control the air conditioner to run in the heating mode and control the water circuit heat exchanger 27 to run in the hot water making mode.

[0139] After closing the flow regulating valve 29, when the air conditioner is in heating mode and the water heat exchanger 27 is in hot water making mode, the refrigerant flowing out of the water heat exchanger 27 can be prevented from entering the refrigerant radiator 25 through the flow regulating valve 29, thereby preventing this part of the refrigerant from affecting the refrigerant flowing from the indoor heat exchanger 11 into the refrigerant radiator 25, thereby avoiding affecting the normal flow of the refrigerant in the refrigerant radiator 25.

[0140] In addition, the air conditioner is further configured to control the flow regulating valve 29 to be closed when the indoor unit 1 of the air conditioner is turned off and the water circuit heat exchanger 27 is in the hot water making mode.

[0141] like Fig.12 As shown, the specific control process of the air conditioner is: after receiving the instruction that the indoor unit 1 is shut down and the water circuit heat exchanger 27 is in the hot water making mode, it is detected whether the flow regulating valve 29 is closed. If so, the indoor unit 1 is controlled to be shut down, and the stop valve 3 is closed, and the water circuit heat exchanger 27 is controlled to run the hot water making mode. If not, the flow regulating valve 29 is closed, and then the indoor unit 1 is controlled to be shut down, and the stop valve 3 is closed, and the water circuit heat exchanger 27 is controlled to run the hot water making mode.

[0142] After closing the flow regulating valve 29, when the indoor unit 1 of the air conditioner is turned off and the water heat exchanger 27 is in the hot water making mode, it is possible to prevent the refrigerant flowing out of the water heat exchanger 27 from partially entering the first end of the refrigerant radiator 25 through the flow regulating valve 29 and the other part entering the second end of the refrigerant radiator 25 through the second throttling device 28, thereby avoiding affecting the normal flow of the refrigerant in the refrigerant radiator 25.

[0143] The present application also provides an air conditioner control method, the control method comprising: when the air conditioner is in cooling mode and the water circuit heat exchanger 27 is in hot water making mode, controlling the opening of the flow regulating valve 29 according to the actual cooling capacity of the air conditioner.

[0144] For example, Fig.13 As shown, the specific steps of the control method may be:

[0145] It is determined whether the air conditioner is in cooling mode and the water circuit heat exchanger 27 is in hot water making mode.

[0146] If not, close the flow regulating valve 29;

[0147] If so, further determining whether the cooling capacity of the air conditioner is less than a preset cooling capacity;

[0148] If not, close the flow regulating valve 29;

[0149] If yes, the flow regulating valve 29 is opened.

[0150] The cooling capacity of the air conditioner can be used to determine whether the amount of refrigerant flowing through the refrigerant radiator 25 meets the demand. When the amount of refrigerant in the refrigerant radiator 25 does not meet the demand, the flow regulating valve 29 can be opened to add refrigerant to the refrigerant radiator 25 to ensure the heat dissipation effect of the refrigerant radiator 25 on the drive plate.

[0151] On this basis, after the flow regulating valve 29 is opened, it is possible to further judge whether the amount of refrigerant in the refrigerant radiator 25 meets the requirements through the temperature of the driving plate, and further adjust the amount of refrigerant in the refrigerant radiator 25 .

[0152] Specifically, Fig.14 As shown, the air conditioner control method includes:

[0153] When the flow regulating valve 29 is opened, determining whether the temperature of the driving plate is greater than or equal to a first preset temperature;

[0154] If not, the opening of the second throttling device 28 is not adjusted;

[0155] If so, the second throttling device 28 is controlled to be closed to the first opening.

[0156] In addition, when the flow regulating valve 29 is opened and it is determined that the temperature of the driving plate is lower than the first preset temperature, the temperature of the driving plate can be further determined to more accurately control the refrigerant flow in the refrigerant radiator 25 .

[0157] Specifically, Fig.15 As shown, the air conditioner control method includes:

[0158] When the flow regulating valve 29 is opened, determining whether the temperature of the driving plate is greater than or equal to a first preset temperature;

[0159] If not, determining whether the temperature of the driving plate is greater than or equal to a second preset temperature, wherein the second preset temperature is less than the first preset temperature;

[0160] If not, the opening of the second throttling device 28 is not adjusted;

[0161] If so, the second throttling device 28 is controlled to be closed to a second opening, wherein the second opening is greater than the first opening.

[0162] By further judging the relationship between the temperature of the driving plate and the first preset temperature and the second preset temperature, the refrigerant flow in the refrigerant radiator 25 can be adjusted more accurately while ensuring the ability of the water heat exchanger 27 to produce hot water, thereby ensuring that the temperature of the driving plate is within a safe temperature range.

[0163] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the present application for which protection is claimed, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0164] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0165] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air conditioner, characterized in that: include: A compressor having a suction port and a discharge port; Indoor heat exchanger; an outdoor heat exchanger, wherein a first end of the outdoor heat exchanger is connected to a first end of the indoor heat exchanger via a first throttling device; a reversing valve connected to the air intake port, the air exhaust port, the second end of the indoor heat exchanger and the second end of the outdoor heat exchanger, and used for switching the circulation route of the refrigerant so that the air conditioner switches between a heating mode and a cooling mode; A refrigerant radiator, wherein a first end of the refrigerant radiator is connected between a first end of the outdoor heat exchanger and the first throttling device, and a second end of the refrigerant radiator is connected between the first throttling device and a first end of the indoor heat exchanger; The water heat exchanger comprises a refrigerant flow path and a water flow path for exchanging heat with each other, wherein a first end of the refrigerant flow path is connected to the exhaust port, and a second end of the refrigerant flow path is connected between a second end of the refrigerant radiator and a first end of the indoor heat exchanger; and the water flow path is used for circulating water; a flow regulating valve, wherein a first end of the flow regulating valve is connected to a second end of the refrigerant flow path, and a second end of the flow regulating valve is connected to a first end of the refrigerant radiator; The controller is configured to control the opening of the flow regulating valve according to the actual cooling capacity of the air conditioner when the air conditioner is in cooling mode and the water circuit heat exchanger is in hot water making mode.

2. The air conditioner according to claim 1, characterized in that: The controller is specifically configured as follows: Determining whether the actual cooling capacity of the air conditioner is less than the preset cooling capacity; If not, closing the flow regulating valve; If so, fully open the flow regulating valve.

3. The air conditioner according to claim 1 or 2, characterized in that: The air conditioner also includes: a second throttling device, wherein the second end of the refrigerant flow path is connected to the pipeline between the second end of the refrigerant radiator and the second end of the indoor heat exchanger through the second throttling device, and the first end of the flow regulating valve is connected to the pipeline between the second throttling device and the second end of the refrigerant flow path; A driving plate connected to the refrigerant radiator, wherein the refrigerant radiator is used to dissipate heat from the driving plate; A temperature detection device, connected to the driving board and used to detect the temperature of the driving board; The controller is further configured to: when the flow regulating valve is opened, determine whether the temperature of the driving plate is greater than or equal to a first preset temperature, wherein the first preset temperature is less than an alarm temperature of the driving plate; If so, the second throttling device is controlled to close to the first opening.

4. The air conditioner according to claim 3, characterized in that: The controller is further configured to: if the temperature of the driving plate is lower than the first preset temperature, determine whether the temperature of the driving plate is greater than or equal to a second preset temperature, wherein the second preset temperature is lower than the first preset temperature; If so, the second throttling device is controlled to close to a second opening, wherein the second opening is greater than the first opening.

5. The air conditioner according to claim 3, characterized in that: The controller is also configured to: The temperature detection device is controlled to detect the temperature of the driving board once every first preset time period, and it is determined whether the temperature detected by the temperature detection device is greater than or equal to the first preset temperature.

6. The air conditioner according to claim 4, characterized in that: The controller is also configured to: The temperature detection device is controlled to detect the temperature of the driving board once every second preset time period, and it is determined whether the temperature detected by the temperature sensor is greater than or equal to the second preset temperature.

7. The air conditioner according to claim 1 or 2, characterized in that: The controller is also configured to: When the air conditioner is in heating mode and the water circuit heat exchanger is in hot water mode, controlling the flow regulating valve to close; When the indoor unit of the air conditioner is turned off and the water circuit heat exchanger is in the hot water making mode, the flow regulating valve is controlled to be closed.

8. The air conditioner according to claim 7, characterized in that: The reversing valve has a first valve port, a second valve port, a third valve port and a fourth valve port; The first valve port is connected to the exhaust port, the third valve port is connected to the intake port, the fourth valve port is connected to the second end of the indoor heat exchanger, and the second valve port is connected to the second end of the outdoor heat exchanger; When the first valve port is connected to the second valve port, the third valve port is connected to the fourth valve port, and the outdoor heat exchanger and the water heat exchanger are used as condensers, and the indoor heat exchanger is used as an evaporator, the air conditioner is in cooling mode, and the water heat exchanger is in hot water mode; When the first valve port is connected to the fourth valve port, the third valve port is connected to the second valve port, and the indoor heat exchanger and the water heat exchanger serve as condensers, and the outdoor heat exchanger serves as an evaporator, the air conditioner is in heating mode, and the water heat exchanger is in hot water mode.

9. The air conditioner according to claim 8, characterized in that: The air conditioner further comprises a stop valve connected between the second end of the indoor heat exchanger and the fourth valve port; When the first valve port is connected to the fourth valve port, the third valve port is connected to the second valve port, the water heat exchanger serves as a condenser, the outdoor heat exchanger serves as an evaporator, the stop valve is closed, and the indoor unit is turned off, the air conditioner is the indoor unit turned off, and the water heat exchanger is in the hot water making mode.

10. An air conditioner control method, characterized in that: The air conditioner comprises: A compressor having a suction port and a discharge port; Indoor heat exchanger; an outdoor heat exchanger, wherein a first end of the outdoor heat exchanger is connected to a first end of the indoor heat exchanger via a first throttling device; a reversing valve connected to the air intake port, the air exhaust port, the second end of the indoor heat exchanger and the second end of the external heat exchanger, and used to switch the circulation route of the refrigerant so that the air conditioner switches between a heating mode and a cooling mode; A refrigerant radiator, wherein a first end of the refrigerant radiator is connected between a first end of the outdoor heat exchanger and the first throttling device, and a second end of the refrigerant radiator is connected between the first throttling device and a first end of the indoor heat exchanger; A water heat exchanger, the water heat exchanger comprising a refrigerant flow path and a water flow path for exchanging heat with each other, the first end of the refrigerant flow path being connected to the exhaust port, the second end of the refrigerant flow path being connected between the second end of the refrigerant radiator and the first end of the indoor heat exchanger; the water flow path being used for circulating water; a flow regulating valve, wherein a first end of the flow regulating valve is connected to a second end of the refrigerant flow path, and a second end of the flow regulating valve is connected to a first end of the refrigerant radiator; The control method comprises: when the air conditioner is in a cooling mode and the water circuit heat exchanger is in a hot water making mode, controlling the opening of the flow regulating valve according to the actual cooling capacity of the air conditioner.

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