CN113432204B

CN113432204B - Air conditioner, control method of air conditioner, and control device of air conditioner

Info

Publication number: CN113432204B
Application number: CN202110725382.4A
Authority: CN
Inventors: 向兴华; 余圩钱; 黄招彬; 岑长岸; 徐锦清; 钟雄斌; 杨建�; 刘帝江; 周亚卿
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Foshan Shunde Midea Electric Science and Technology Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Foshan Shunde Midea Electric Science and Technology Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-11-22
Anticipated expiration: 2041-06-29
Also published as: CN113432204A

Abstract

The invention discloses an air conditioner, a control method of the air conditioner and a control device of the air conditioner. The air conditioner comprises an air conditioner body and a middle partition plate, wherein the air conditioner body is divided into a first cavity and a second cavity by the middle partition plate, a first evaporator and a second evaporator are arranged in the first cavity relatively, a first condenser and a second condenser are arranged in the second cavity relatively, a first water receiving area for receiving condensed water of the first evaporator and a second water receiving area for receiving condensed water of the second evaporator are arranged on the middle partition plate, a first water return part is used for pumping the condensed water in the chassis to the first water receiving area, and a second water return part is used for pumping the condensed water in the chassis to the second water receiving area. From this, through the air conditioner of this application, can be through controlling first return water part and second return water part to take out and control the discharge to first water receiving area and the regional second water receiving, thereby can improve the heat exchange efficiency of condenser, can improve the refrigeration efficiency of air conditioner.

Description

Air conditioner, control method of air conditioner, and control device of air conditioner

Technical Field

The invention relates to the field of household appliances, in particular to an air conditioner, a control method of the air conditioner and a control device of the air conditioner.

Background

In the related art, the air conditioner is provided with a water receiving disc, the water receiving disc can be used for receiving condensed water generated during the working of the air conditioner, and the condensed water in the water receiving disc can flow to the condenser so as to improve the heat exchange efficiency of the condenser. However, when the temperatures of the two sides of the air conditioner are inconsistent, the heat exchange efficiency of the condenser arranged on the air conditioner is affected, so that the refrigeration efficiency of the air conditioner is affected, and the use experience of a user is affected.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an air conditioner, which can control the flow rate of water pumped to the first water receiving area and the second water receiving area, improve the heat exchange efficiency of the condenser, and improve the user experience.

The invention further provides a control method of the air conditioner.

The invention further proposes a computer-readable storage medium.

The invention further provides an air conditioner.

The invention further provides a control device of the air conditioner.

The air conditioner comprises an air conditioner body, a first evaporator, a second evaporator, a middle partition plate, a first condenser, a second condenser, a base plate, a first water return part and a second water return part, wherein the middle partition plate divides the air conditioner body into a first cavity and a second cavity, the first evaporator and the second evaporator are oppositely arranged in the first cavity, the first condenser and the second condenser are oppositely arranged in the second cavity, the middle partition plate is provided with a first water receiving area for receiving condensed water of the first evaporator and a second water receiving area for receiving condensed water of the second evaporator, the condensed water of the first water receiving area is guided to the first condenser, the condensed water of the second water receiving area is guided to the second condenser, the first water return part is used for pumping the condensed water in the base plate to the first water receiving area, and the second water return part is used for pumping the condensed water in the base plate to the second water receiving area.

According to the air conditioner, the water flow pumping to the first water receiving area and the second water receiving area can be controlled by controlling the first water return component and the second water return component, so that the heat exchange efficiency of the condenser can be improved, and the refrigeration efficiency of the air conditioner can be improved.

In some examples of the invention, the first water returning component comprises a first water pump, the second water returning component comprises a second water pump, the first water pump is used for controlling the water flow of the first water returning component, and the second water pump is used for controlling the water flow of the second water returning component.

In some examples of the invention, the first water returning part comprises a first solenoid valve, the second water returning part comprises a second solenoid valve, the first solenoid valve is used for adjusting the water flow of the first water returning part, and the second solenoid valve is used for adjusting the water flow of the second water returning part.

The control method of the air conditioner according to the invention comprises the following steps: detecting the return air temperature of the first condenser and the return air temperature of the second condenser; and determining a return air temperature difference value according to the return air temperature of the first condenser and the return air temperature of the second condenser, and controlling the first water return part and the second water return part according to the return air temperature difference value so as to enable the water flow flowing to the condenser with high return air temperature to be larger than the water flow flowing to the condenser with low return air temperature.

According to the control method of the air conditioner, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, and the refrigeration efficiency of the air conditioner can be improved.

In some examples of the invention, controlling the first water return component and the second water return component according to the return air temperature difference comprises: and when the return air temperature of the first condenser is higher than that of the second condenser, if the return air temperature difference is higher than a first preset temperature difference, increasing the water flow of the first water return component, and closing the water flow of the second water return component.

In some examples of the invention, controlling the first and second water return components according to the return air temperature difference further comprises: the return air temperature of the first condenser is larger than that of the second condenser, if the return air temperature difference value is larger than a second preset temperature difference and smaller than or equal to the first preset temperature difference, the water flow of the first water return part is increased, and the water flow of the second water return part is reduced.

In some examples of the invention, controlling the first water return component and the second water return component according to the return air temperature difference comprises: when the return air temperature of the first condenser is lower than that of the second condenser, if the return air temperature difference is larger than a first preset temperature difference, the water flow of the second water return component is increased, and the water flow of the first water return component is closed.

In some examples of the invention, controlling the first water return component and the second water return component according to the return air temperature difference further comprises: the return air temperature of the first condenser is smaller than that of the second condenser, if the return air temperature difference value is larger than the second preset temperature difference and smaller than or equal to the first preset temperature difference, the water flow of the second water return component is increased, and the water flow of the first water return component is reduced.

In some examples of the invention, the first water returning part comprises a first water pump, the second water returning part comprises a second water pump, wherein controlling the first water returning part and the second water returning part comprises: and the water flow of the first water return component and the water flow of the second water return component are correspondingly changed by controlling the rotating speed and/or the running time of the first water pump and the rotating speed and/or the running time of the second water pump.

In some examples of the invention, the first water returning part comprises a first solenoid valve, the second water returning part comprises a second solenoid valve, wherein controlling the first water returning part and the second water returning part comprises: and the water flow of the first water return component and the water flow of the second water return component are correspondingly changed by controlling the opening of the first electromagnetic valve and the opening of the second electromagnetic valve.

According to the computer-readable storage medium of the present invention, there is stored thereon a control program of an air conditioner, which when executed by a processor, implements the control method of the air conditioner described above.

According to the computer-readable storage medium, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

The air conditioner comprises a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored in the memory and can run on the processor, and when the processor executes the control program of the air conditioner, the control method of the air conditioner is realized.

According to the air conditioner, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

According to the control device of the air conditioner, the air conditioner comprises an air conditioner body, a first evaporator, a second evaporator, a middle partition plate, a first condenser, a second condenser, a base plate, a first water return part and a second water return part, the middle partition plate divides the air conditioner body into a first cavity and a second cavity, the first evaporator and the second evaporator are oppositely arranged in the first cavity, the first condenser and the second condenser are oppositely arranged in the second cavity, a first water receiving area for receiving condensed water of the first evaporator and a second water receiving area for receiving condensed water of the second evaporator are arranged on the middle partition plate, the condensed water of the first water receiving area is guided to the first condenser, the condensed water of the second water receiving area is guided to the second condenser, the first water return part is used for pumping the condensed water in the base plate to the first water receiving area, and the second water return part is used for pumping the condensed water in the base plate to the second water receiving area, and the control device comprises: the temperature detection unit is used for detecting the return air temperature of the first condenser and the return air temperature of the second condenser; and the control unit is used for determining a return air temperature difference value according to the return air temperature of the first condenser and the return air temperature of the second condenser, and controlling the first water return part and the second water return part according to the return air temperature difference value so as to enable the water flow flowing to the condenser with high return air temperature to be larger than the water flow flowing to the condenser with low return air temperature.

According to the control device of the air conditioner, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;

fig. 2 is a block schematic diagram of a control apparatus of an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic view of an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic view of another angle of the air conditioner according to the embodiment of the present invention;

FIG. 5 is a schematic illustration of a first water return component and a second water return component according to an embodiment of the invention;

FIG. 6 is another schematic illustration of a first water return component and a second water return component according to an embodiment of the invention;

FIG. 7 is a schematic view of a septum according to an embodiment of the invention;

FIG. 8 is a block schematic diagram of a processor, memory, communication interface, communication bus according to an embodiment of the present invention;

fig. 9 is a flowchart of a specific embodiment of a control method of an air conditioner according to an embodiment of the present invention.

Reference numerals are as follows:

an air conditioner 100; a control device 200; a heat source 1;

a first condenser 11; a second condenser 12; a first evaporator 13; a second evaporator 14; a chassis 15; a middle bulkhead 16; a first water returning part 17; a second water returning part 18; a first water receiving area 19; a second water receiving area 20; a first water return line 21; a second water return line 22; a compressor 23; a water storage area 24; a first water inlet 25; a second water inlet 26; an air conditioner body 27;

a control unit 30; a central control unit 31; a first water amount control unit 32; a second water amount control unit 33;

a temperature detection unit 40; a first detection unit 41; a second detection unit 42;

a water pump 50; a first water pump 51; a second water pump 52; the first electromagnetic valve 53; a second solenoid valve 54;

an air deflector 70; a first air deflector 71; a second air deflector 72; an air outlet chamber 73;

a processor 1201; a communication interface 1202; a memory 1203; a communication bus 1204.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

An air conditioner 100 according to an embodiment of the present invention is described below with reference to fig. 3 to 7.

As shown in fig. 3 to 7, the air conditioner 100 according to the embodiment of the present invention includes: the air conditioner comprises an air conditioner body 27, a first condenser 11, a second condenser 12, a first evaporator 13, a second evaporator 14, a chassis 15, a middle partition plate 16, a first water return part 17 and a second water return part 18.

The middle partition board 16 is disposed in the air conditioner body 27, the air conditioner body 27 is divided into a second cavity and a first cavity by the middle partition board 16, the first evaporator 13 is disposed in the first cavity, the second evaporator 14 is also disposed in the first cavity, and the second evaporator 14 and the first evaporator 13 are disposed oppositely. The first condenser 11 is disposed in the second chamber, the second condenser 12 is also disposed in the second chamber, and the second condenser 12 and the first condenser 11 are disposed oppositely.

In the height direction of the air conditioner 100, the middle partition 16 is located below the second evaporator 14 and the first evaporator 13, and the middle partition 16 is located above the second condenser 12 and the first condenser 11. The middle partition 16 is provided with a first water receiving area 19, the first water receiving area 19 can receive condensed water, specifically, the first water receiving area 19 can receive condensed water of the first evaporator 13, the middle partition 16 is further provided with a second water receiving area 20, the second water receiving area 20 can also receive condensed water, specifically, the second water receiving area 20 can receive condensed water of the second evaporator 14, the second water receiving area 20 and the first water receiving area 19 are arranged at intervals, and the second water receiving area 20 and the first water receiving area 19 are arranged at intervals in an isolated mode.

Alternatively, in the height direction of the air conditioner 100, the first evaporator 13 and the first condenser 11 may be disposed correspondingly, and the second evaporator 14 and the second condenser 12 may be disposed correspondingly, it is understood that condensed water may be generated after the air exchanges heat with the evaporators, and the generated condensed water may flow to the middle partition 16, specifically, the condensed water generated after the air exchanges heat with the first evaporator 13 may flow to the first water receiving area 19 of the middle partition 16, and the condensed water generated after the air exchanges heat with the second evaporator 14 may flow to the second water receiving area 20 of the middle partition 16.

A base pan 15 is disposed below the second condenser 12 and the first condenser 11 in the height direction of the air conditioner 100, the second condenser 12 and the first condenser 11 are disposed on the base pan 15, and a middle partition 16 is disposed above the second condenser 12 and the first condenser 11, it being understood that the middle partition 16 is disposed between the condenser and the evaporator. The condensed water in the first water receiving area 19 can be guided to the first condenser 11, the condensed water in the second water receiving area 20 can be guided to the second condenser 12, and the condensed water can flow into the base plate 15 after flowing through the condensers, and optionally, the base plate 15 can be provided with a water storage area 24 for receiving the condensed water. The water returning member may pump the condensed water in the water storage region 24 to the water receiving region, and specifically, the first water returning member 17 may pump the condensed water in the water storage region 24 so that the condensed water in the water storage region 24 flows into the first water receiving region 19, and the second water returning member 18 may pump the condensed water in the water storage region 24 so that the condensed water in the water storage region 24 flows into the second water receiving region 20.

It can be understood that, when the air conditioner 100 is in operation, the air can produce the comdenstion water after passing through the evaporator, namely the air can produce the comdenstion water after taking place the heat exchange with the evaporator, the comdenstion water that produces can flow to second water receiving area 20 and the first water receiving area 19 of median septum 16, the comdenstion water in the first water receiving area 19 can flow to first condenser 11, the comdenstion water in the second water receiving area 20 can flow to second condenser 12, the comdenstion water that flows to on the condenser can cool off the condenser, in order to improve the heat exchange efficiency of condenser, in order to promote the refrigeration efficiency of air conditioner 100.

And the condensed water flowing through the condenser can flow to the base pan 15, optionally, the base pan 15 can be provided with a water storage area 24 for receiving the condensed water, and the condensed water flowing through the condenser can flow to the water storage area 24 of the base pan 15. The first water returning component 17 can drive the condensed water in the water storage area 24, so that the condensed water in the water storage area 24 flows into the first water receiving area 19, and the second water returning component 18 can drive the condensed water in the water storage area 24, so that the condensed water in the water storage area 24 flows into the second water receiving area 20, so that the condensed water can continuously flow to the condenser, the heat exchange efficiency of the condenser can be further improved, and the refrigeration efficiency of the air conditioner 100 can be further improved.

Alternatively, the first water return component 17 may include a first water return pipeline 21, one end of the first water return pipeline 21 may be disposed in communication with the water storage area 24 of the chassis 15, the other end of the first water return pipeline 21 may be disposed in communication with the first water receiving area 19, and the condensed water in the water storage area 24 may flow to the first water receiving area 19 through the first water return pipeline 21. The second water return component 18 may include a second water return pipe 22, one end of the second water return pipe 22 may be communicated with a water storage area 24 of the chassis 15, the other end of the second water return pipe 22 may be communicated with the second water receiving area 20, and condensed water in the water storage area 24 may flow to the second water receiving area 20 through the second water return pipe 22.

By controlling the first and second

water returning parts

21 and 22, the water flow rate of the water drawn to the first and second

water receiving areas

19 and 20 may be controlled, and optionally, the water flow rate of the water drawn to the first and second

water receiving areas

19 and 20 may be controlled by controlling the first and second

water returning parts

21 and 22 according to the return air temperatures of the second and

first condensers

12 and 11.

For example, if the return air temperature of the second condenser 12 is higher than the return air temperature of the first condenser 11, the control unit 30 may control the second water returning part 18 and the first water returning part 17 such that the flow rate of water flowing to the second water receiving area 20 is larger than the flow rate of water flowing to the first water receiving area 19, and such that the flow rate of water flowing to the second condenser 12 is larger than the flow rate of water flowing to the first condenser 11. This makes it possible to reliably control the flow rate of water flowing to the second condenser 12 and the first condenser 11 in accordance with the difference in the return air temperature.

It should be noted that the air conditioner 100 of the present application may be various types of air conditioners 100, for example, the air conditioner 100 of the present application may be a mobile air conditioner 100 or a portable air conditioner 100, and the air conditioner 100 of the present application may be applied to various scenes, such as a bedroom, a living room, a washing room, a study room, a kitchen, and the like. It is understood that the ambient air temperature may be different on both sides of the air conditioner 100, for example, when the air conditioner 100 is applied to a kitchen, the kitchen may have a heat source 1 (e.g., an induction cooker, a gas range, etc.) when a user cooks in the kitchen, wherein the heat source 1 may be an open flame, and of course, the heat source 1 may not be an open flame.

At this time, the ambient air temperature of the air conditioner 100 close to the heat source 1 side may be greater than the ambient air temperature of the air conditioner 100 far from the heat source 1 side, and even the ambient air temperature of the air conditioner 100 close to the heat source 1 side may be greater than the temperature of the condenser close to the heat source 1, so that the heat exchange efficiency of the condenser close to the heat source 1 side may be seriously affected, the refrigeration efficiency of the air conditioner 100 may be affected, and the user experience may be affected.

In the present application, by controlling the first water returning part 21 and the second water returning part 22, the water flow rate drawn to the first water receiving area 19 and the second water receiving area 20 may be controlled, and optionally, the first water returning part 21 and the second water returning part 22 may be controlled according to the return air temperature of the second condenser 12 and the first condenser 11, so as to control the water flow rate drawn to the first water receiving area 19 and the second water receiving area 20. Thereby, the heat exchange efficiency of the condenser can be improved, and the refrigeration efficiency of the air conditioner 100 can be improved.

Therefore, through the air conditioner 100 of the present application, the water flow to the first water receiving area 19 and the second water receiving area 20 can be controlled by controlling the first water returning part 21 and the second water returning part 22, so that the heat exchange efficiency of the condenser can be improved, and the refrigeration efficiency of the air conditioner 100 can be improved.

Optionally, the air conditioner 100 may further include: the compressor 23, the first condenser 11 and the first evaporator 13 may be connected to each other by a pipeline, a refrigerant may circulate among the compressor 23, the first condenser 11 and the first evaporator 13, and the refrigerant may exchange heat with air outside the first evaporator 13 when flowing through the first evaporator 13, thereby achieving a cooling effect of the air conditioner 100.

Further, the compressor 23, the second condenser 12, and the second evaporator 14 may be connected to each other by pipes, a refrigerant may circulate among the compressor 23, the second condenser 12, and the second evaporator 14, and the refrigerant may exchange heat with air outside the second evaporator 14 when flowing through the second evaporator 14, thereby achieving a cooling effect of the air conditioner 100.

Alternatively, as shown in fig. 7, as some embodiments of the present invention, a first water inlet 25 may be provided on the middle partition 16, one end of the first water inlet 25 may be disposed to communicate with the first water receiving area 19, the other end of the first water inlet 25 may be disposed to communicate with the first water return pipe 21, and condensed water in the water storage area 24 may enter the first water receiving area 19 through the first water return pipe 21 and the first water inlet 25.

Further, a second water inlet 26 may be further disposed on the middle partition 16, one end of the second water inlet 26 may be communicated with the second water receiving area 20, the other end of the second water inlet 26 may be communicated with the second water return pipe 22, and condensed water in the water storage area 24 may enter the second water receiving area 20 through the second water return pipe 22 and the second water inlet 26. This allows the condensate water in the water storage region 24 to reliably flow into the first drain region 19 and/or the second drain region 20.

As some embodiments of the present invention, as shown in fig. 4, the air conditioner 100 may have an air outlet cavity 73 through which cold air generated by the air conditioner 100 may be blown, alternatively, an air guiding plate 70 may be disposed on the air outlet cavity 73, the air guiding plate 70 may include a first air guiding plate 71 and a second air guiding plate 72, the first air guiding plate 71 may extend in the left-right direction shown in fig. 4, the second air guiding plate 72 may extend in the up-down direction shown in fig. 4, alternatively, the number of the first air guiding plates 71 may be plural, and the plural first air guiding plates 71 may be spaced apart in the up-down direction shown in fig. 4.

Further, the first air guiding plate 71 can swing up and down as shown in fig. 4, and when the first air guiding plate 71 swings up and down as shown in fig. 4, the direction of the air sent into the room from the air outlet chamber 73 can be changed, so that the function of sweeping the air up and down of the air conditioner 100 can be realized. The second air guide plate 72 can swing in the left-right direction shown in fig. 4, and when the second air guide plate 72 swings in the left-right direction shown in fig. 4, the direction of the air sent into the room from the air outlet chamber 73 can be changed, so that the function of sweeping the air from the left to the right of the air conditioner 100 can be realized.

Furthermore, when the air conditioner 100 is turned off, the air deflector 70 may close the air outlet chamber 73, so as to prevent dust or mosquitoes and the like from entering the inside of the air conditioner 100 from the air outlet chamber 73, thereby ensuring that clean and sanitary air can be generated when the air conditioner 100 works.

As some embodiments of the present invention, a handle may be disposed on the top of the air conditioner 100, and both left and right ends of the handle may be fixed on the air conditioner 100 through a connecting member, preferably, the connecting member may be a screw, and when it is necessary to move the air conditioner 100, a user may carry the air conditioner 100 by lifting the handle, so that the user may carry the air conditioner 100 by lifting the handle, thereby enabling the user to carry the air conditioner 100 with less effort.

In some embodiments of the present invention, as shown in fig. 5 and 6, the water returning part may include a water pump 50, and specifically, the second water returning part 18 and the first water returning part 17 may include a second water pump 52 and a first water pump 51, respectively, wherein the first water pump 51 may be used for controlling the water flow rate of the first water returning part 17, and the second water pump 52 may be used for controlling the water flow rate of the second water returning part 18.

For example, the water flow rate of the first water returning part 17 may be changed by controlling the rotation speed of the first water pump 51, or the water flow rate of the first water returning part 17 may be changed by controlling the operation time and the rotation speed of the first water pump 51.

Also, the water flow rate of the second water returning part 18 may be changed by controlling the rotation speed of the second water pump 52, or the water flow rate of the second water returning part 18 may be changed by controlling the operation time and the rotation speed of the second water pump 52.

Therefore, the water flow of the water return component can be controlled by controlling the running time and/or the rotating speed of the water pump 50, so that the water flow of the water return component can be reliably and accurately controlled, and the use reliability of the control device can be ensured.

In some embodiments of the present invention, as shown in fig. 5 and 6, the water returning part may further include a solenoid valve, and specifically, the second water returning part 18 and the first water returning part 17 may include a second solenoid valve 54 and a first solenoid valve 53, respectively, wherein the second solenoid valve 54 may be used for adjusting the water flow rate of the second water returning part 18, and the first solenoid valve 53 may be used for adjusting the water flow rate of the first water returning part 17.

For example, the water flow rate of the first water returning part 17 may be changed by controlling the opening degree of the first solenoid valve 53, and the water flow rate of the second water returning part 18 may be changed by controlling the opening degree of the second solenoid valve 54. Therefore, the water flow of the water return component can be controlled by controlling the opening of the electromagnetic valve, so that the water flow of the water return component can be reliably and accurately controlled, and the use reliability of the control device can be ensured.

Alternatively, as some embodiments of the present invention, as shown in fig. 6, when the second solenoid valve 54 and the first solenoid valve 53 are provided, the number of the water pump 50 may be set to one, the water pump 50 may be provided to be communicated with both the first water return pipe 21 and the second water return pipe 22, the first solenoid valve 53 may be provided on the first water return pipe 21, and the second solenoid valve 54 may be provided on the second water return pipe 22, so that the water flow rate of the water returning part may be controlled by controlling the opening degree of the solenoid valves, and the number of parts of the air conditioner 100 may be reduced, so that the production cost of the air conditioner 100 may be reduced.

A control device 200 of the air conditioner 100 according to an embodiment of the present invention is described below with reference to fig. 2 to 7.

The middle partition plate 16 is arranged in the air conditioner body 27, the air conditioner body 27 is divided into a second cavity and a first cavity by the middle partition plate 16, the first evaporator 13 is arranged in the first cavity, the second evaporator 14 is also arranged in the first cavity, and the second evaporator 14 and the first evaporator 13 are oppositely arranged. The first condenser 11 is disposed in the second chamber, the second condenser 12 is also disposed in the second chamber, and the second condenser 12 is disposed opposite to the first condenser 11.

In the height direction of the air conditioner 100, the middle partition 16 is located below the second evaporator 14 and the first evaporator 13, and the middle partition 16 is located above the second condenser 12 and the first condenser 11. Be provided with first water receiving area 19 on the median septum 16, first water receiving area 19 can accept the comdenstion water, specifically, first water receiving area 19 can accept the comdenstion water of first evaporimeter 13, still be provided with second water receiving area 20 on the median septum 16, second water receiving area 20 also can accept the comdenstion water, specifically, second water receiving area 20 can accept the comdenstion water of second evaporimeter 14, second water receiving area 20 and first water receiving area 19 separate the setting to, second water receiving area 20 and first water receiving area 19 separate the setting each other.

In the height direction of the air conditioner 100, a base pan 15 is disposed below the second condenser 12 and the first condenser 11, the second condenser 12 and the first condenser 11 are disposed on the base pan 15, and a middle partition 16 is disposed above the second condenser 12 and the first condenser 11, it being understood that the middle partition 16 is disposed between the condenser and the evaporator. The condensed water in the first water receiving area 19 can be guided to the first condenser 11, the condensed water in the second water receiving area 20 can be guided to the second condenser 12, and the condensed water can flow into the base plate 15 after flowing through the condensers, and optionally, the base plate 15 can be provided with a water storage area 24 for receiving the condensed water. The water returning member can pump the condensed water in the water storage region 24 to the water receiving region, specifically, the first water returning member 17 can pump the condensed water in the water storage region 24 out so that the condensed water in the water storage region 24 flows into the first water receiving region 19, and the second water returning member 18 can pump the condensed water in the water storage region 24 out so that the condensed water in the water storage region 24 flows into the second water receiving region 20.

Optionally, the first water return component 17 may include a first water return pipeline 21, one end of the first water return pipeline 21 may be disposed to communicate with a water storage area 24 of the chassis 15, the other end of the first water return pipeline 21 may be disposed to communicate with the first water receiving area 19, and the condensed water in the water storage area 24 may flow to the first water receiving area 19 through the first water return pipeline 21. The second water returning part 18 may include a second water returning pipe 22, one end of the second water returning pipe 22 may be communicated with a water storage area 24 of the chassis 15, the other end of the second water returning pipe 22 may be communicated with the second water receiving area 20, and condensed water in the water storage area 24 may flow to the second water receiving area 20 through the second water returning pipe 22.

As shown in fig. 2, the control apparatus according to the embodiment of the present invention includes: a temperature detection unit 40 and a control unit 30.

Wherein the temperature detecting unit 40 can detect the return air temperature of the second condenser 12 and the first condenser 11, optionally, the temperature detecting unit 40 may include a first detecting unit 41 and a second detecting unit 42, wherein the first detecting unit 41 may be used for detecting the return air temperature of the first condenser 11, and the second detecting unit 42 may be used for detecting the return air temperature of the second condenser 12. Thus, the accuracy of the temperature detection by the temperature detection unit 40 can be ensured.

The temperature detecting unit 40 is connected to the control unit 30, optionally, the temperature detecting unit 40 and the control unit 30 may be in communication connection, the temperature detecting unit 40 may transmit the detected return air temperature to the control unit 30, the control unit 30 may determine a return air temperature difference according to the detected return air temperature, and the control unit 30 may control the second water returning part 18 and the first water returning part 17 according to the return air temperature difference to control the water flow rate flowing to the second condenser 12 and the first condenser 11, and specifically, the control unit 30 may control the second water returning part 18 and the first water returning part 17 according to the return air temperature difference to make the water flow rate flowing to the condenser with low return air temperature smaller than the water flow rate flowing to the condenser with high return air temperature.

For example, if the temperature detection unit 40 detects that the return air temperature of the second condenser 12 is higher than the return air temperature of the first condenser 11, the control unit 30 may control the second water returning part 18 and the first water returning part 17 such that the flow rate of water flowing to the second condenser 12 is greater than the flow rate of water flowing to the first condenser 11.

In particular, the flow of water to the second condenser 12 and the first condenser 11 may be controlled by controlling the flow of water to the second water receiving area 20 and the first water receiving area 19. For example, if the return air temperature of the second condenser 12 is higher than the return air temperature of the first condenser 11, the control unit 30 may control the second water returning part 18 and the first water returning part 17 such that the flow rate of water flowing to the second water receiving area 20 is greater than the flow rate of water flowing to the first water receiving area 19, and such that the flow rate of water flowing to the second condenser 12 is greater than the flow rate of water flowing to the first condenser 11. This makes it possible to reliably control the flow rate of water flowing to the second condenser 12 and the first condenser 11 in accordance with the return air temperature difference.

At this time, the ambient air temperature of the air conditioner 100 close to the side of the heat source 1 may be greater than the ambient air temperature of the air conditioner 100 far from the side of the heat source 1, and even the ambient air temperature of the air conditioner 100 close to the side of the heat source 1 may be greater than the temperature of the condenser close to the heat source 1, so that the heat exchange efficiency of the condenser close to the side of the heat source 1 may be seriously affected, the refrigeration efficiency of the air conditioner 100 may be affected, and the use experience of the user may be affected.

In the present application, the first detection unit 41 can detect the return air temperature of the first condenser 11 and send the detected value to the temperature detection unit 40, and the second detection unit 42 can detect the return air temperature of the second condenser 12 and send the detected value to the temperature detection unit 40. The temperature detecting unit 40 can determine the difference between the return air temperatures of the second condenser 12 and the first condenser 11, and control the water flow rates of the second water returning part 18 and the first water returning part 17 according to the difference between the return air temperatures, so as to control the water flow rates flowing to the second condenser 12 and the first condenser 11, so that the water flow rate flowing to the condenser with low return air temperature is smaller than the water flow rate flowing to the condenser with high return air temperature, so that the condenser with high return air temperature can be rapidly cooled, and the heat exchange efficiency of the condenser with high return air temperature can be improved.

From this, through the controlling means of this application, can control first return water part 17 and second return water part 18 according to the return air temperature of first condenser 11 and second condenser 12 to can improve the discharge of the condenser that flows to return air temperature height, can improve the heat exchange efficiency of condenser, can improve the refrigeration efficiency of air conditioner 100, can promote user's use and experience.

Alternatively, the control unit 30 may include a central control unit 31, a first water amount control unit 32 and a second water amount control unit 33, wherein the central control unit 31 may be in communication with each of the first water amount control unit 32, the second water amount control unit 33, the first detection unit 41 and the second detection unit 42, the central control unit 31 may be configured to determine the return air temperature difference, the first water amount control unit 32 may be configured to control the water flow rate of the first water returning part 17, and the second water amount control unit 33 may be configured to control the water flow rate of the second water returning part 18.

Optionally, the first detection unit 41 may be disposed corresponding to the first condenser 11, optionally, the first detection unit 41 may be disposed on a surface of the first condenser 11 away from the air conditioner 100, the second detection unit 42 may be disposed corresponding to the second condenser 12, optionally, the second detection unit 42 may be disposed on a surface of the second condenser 12 away from the air conditioner 100, thereby, the detection accuracy of the first detection unit 41 may be ensured, the detection accuracy of the second detection unit 42 may also be ensured, and the working reliability of the device may be further controlled.

Alternatively, as some embodiments of the present invention, as shown in fig. 7, a first water inlet 25 may be provided on the middle partition 16, one end of the first water inlet 25 may be provided to communicate with the first water receiving area 19, the other end of the first water inlet 25 may be provided to communicate with the first water return pipe 21, and the condensed water in the water storage area 24 may enter the first water receiving area 19 through the first water return pipe 21 and the first water inlet 25.

Further, a second water inlet 26 may be further disposed on the middle partition 16, one end of the second water inlet 26 may be communicated with the second water receiving area 20, the other end of the second water inlet 26 may be communicated with the second water return pipe 22, and condensed water in the water storage area 24 may enter the second water receiving area 20 through the second water return pipe 22 and the second water inlet 26. This enables the condensate in the water storage region 24 to reliably flow into the first water receiving region 19 and/or the second water receiving region 20.

Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention, which may be implemented by the control apparatus of the air conditioner of the above-described embodiment, and the control method is applied to the air conditioner.

An air conditioner according to an embodiment of the present invention includes: the air conditioner comprises an air conditioner body, a first condenser, a second condenser, a first evaporator, a second evaporator, a chassis, a middle partition plate, a first water return part and a second water return part.

The middle partition plate is arranged in the air conditioner body, the air conditioner body is divided into a second cavity and a first cavity by the middle partition plate, the first evaporator is arranged in the first cavity, the second evaporator is also arranged in the first cavity, and the second evaporator and the first evaporator are arranged oppositely. The first condenser is arranged in the second cavity, the second condenser is also arranged in the second cavity, and the second condenser and the first condenser are oppositely arranged.

In the height direction of the air conditioner, the middle partition plate is positioned below the second evaporator and the first evaporator, and the middle partition plate is positioned above the second condenser and the first condenser. The middle partition plate is provided with a first water receiving area, the first water receiving area can receive condensed water, specifically, the first water receiving area can receive the condensed water of the first evaporator, the middle partition plate is further provided with a second water receiving area, the second water receiving area can also receive the condensed water, specifically, the second water receiving area can receive the condensed water of the second evaporator, the second water receiving area and the first water receiving area are arranged in a spaced mode, and the second water receiving area and the first water receiving area are arranged in a mutually isolated mode.

Alternatively, in the height direction of the air conditioner, the first evaporator and the first condenser may be disposed correspondingly, and the second evaporator and the second condenser may be disposed correspondingly, it may be understood that condensed water may be generated after heat exchange between the air and the evaporator, and the generated condensed water may flow toward the middle partition plate, and specifically, the condensed water generated after heat exchange between the air and the first evaporator may flow toward the first water receiving area of the middle partition plate, and the condensed water generated after heat exchange between the air and the second evaporator may flow toward the second water receiving area of the middle partition plate.

In the height direction of the air conditioner, a base plate is arranged below the second condenser and the first condenser, the second condenser and the first condenser are arranged on the base plate, and the middle partition plate is arranged above the second condenser and the first condenser, and the middle partition plate is also arranged between the condenser and the evaporator. The condensed water in the first water receiving area can be guided to the first condenser, the condensed water in the second water receiving area can be guided to the second condenser, and the condensed water can flow into the chassis after flowing through the condenser. The water return component can pump the condensed water in the water storage area to the water receiving area, specifically, the first water return component can pump the condensed water in the water storage area out so that the condensed water in the water storage area flows into the first water receiving area, and the second water return component can pump the condensed water in the water storage area out so that the condensed water in the water storage area flows into the second water receiving area.

It can be understood that, when the air conditioner is at the during operation, the air can produce the comdenstion water behind the through evaporation ware, can produce the comdenstion water after the air takes place the heat exchange with the evaporimeter promptly, the second water receiving area and the first water receiving area that the comdenstion water that produces can flow to the median septum, the comdenstion water in the first water receiving area can flow to first condenser, the comdenstion water in the second water receiving area can flow to the second condenser, the comdenstion water that flows to on the condenser can cool off the condenser, with the heat exchange efficiency who improves the condenser, in order to promote the refrigeration efficiency of air conditioner.

And the condensed water flowing through the condenser can flow to the base pan, and optionally, the base pan can be provided with a water storage area for receiving the condensed water, and the condensed water flowing through the condenser can flow to the water storage area of the base pan. The first water return component can drive the condensed water in the water storage area to enable the condensed water in the water storage area to flow into the first water receiving area, and the second water return component can drive the condensed water in the water storage area to enable the condensed water in the water storage area to flow into the second water receiving area, so that the condensed water can continuously flow to the condenser, the heat exchange efficiency of the condenser can be further improved, and the refrigerating efficiency of the air conditioner can be further improved.

Optionally, the first water return component may include a first water return pipeline, one end of the first water return pipeline may be communicated with the water storage region of the chassis, the other end of the first water return pipeline may be communicated with the first water receiving region, and condensed water in the water storage region may flow into the first water receiving region through the first water return pipeline. The second water return part can comprise a second water return pipeline, one end of the second water return pipeline can be communicated with the water storage area of the chassis, the other end of the second water return pipeline can be communicated with the second water receiving area, and condensed water in the water storage area can flow to the second water receiving area through the second water return pipeline.

As shown in fig. 1, the control method includes the steps of:

s1, detecting the return air temperature of the first condenser and the return air temperature of the second condenser. The control device includes: a temperature detection unit and a control unit, wherein the control device is the control device. Wherein, the temperature detecting unit can detect the return air temperature of second condenser and first condenser, and optionally, the temperature detecting unit can include first detecting unit and second detecting unit, and wherein, first detecting unit can be used to detect the return air temperature of first condenser, and the second detecting unit can be used to detect the return air temperature of second condenser. Therefore, the accuracy of the temperature detection unit can be ensured.

And S2, determining a return air temperature difference value according to the return air temperature of the first condenser and the return air temperature of the second condenser, and controlling the first water return part and the second water return part according to the return air temperature difference value so as to enable the water flow flowing to the condenser with high return air temperature to be larger than the water flow flowing to the condenser with low return air temperature.

It should be explained that the temperature detection unit is connected with the control unit, optionally, the temperature detection unit can be in communication connection with the control unit, the temperature detection unit can transmit the detected return air temperature to the control unit, the control unit can determine the return air temperature difference according to the detected return air temperature, furthermore, the control unit can control the second water return component and the first water return component according to the return air temperature difference so as to control the water flow flowing to the second condenser and the first condenser, in particular, the control unit can control the second water return component and the first water return component according to the return air temperature difference so as to make the water flow flowing to the condenser with low return air temperature be smaller than the water flow flowing to the condenser with high return air temperature.

For example, if the temperature detection unit detects that the return air temperature of the second condenser is higher than that of the first condenser, the control unit may control the second water return component and the first water return component so that the water flow rate flowing to the second condenser is greater than that flowing to the first condenser.

Specifically, the water flow to the second condenser and the first condenser can be controlled by controlling the water flow to the second water receiving area and the first water receiving area. For example, if the return air temperature of the second condenser is higher than the return air temperature of the first condenser, the control unit may control the second water returning part and the first water returning part such that the flow rate of water flowing to the second water receiving area is greater than the flow rate of water flowing to the first water receiving area and such that the flow rate of water flowing to the second condenser is greater than the flow rate of water flowing to the first condenser. Therefore, the water flow rate flowing to the second condenser and the first condenser can be reliably controlled according to the return air temperature difference.

It should be noted that the air conditioner of the present application may be various types of air conditioners, for example, the air conditioner of the present application may be a mobile air conditioner or a portable air conditioner, and the air conditioner of the present application may be applied to various scenes, such as a bedroom, a living room, a washing room, a study room, a kitchen, and the like. It will be appreciated that the ambient air temperature may be different on both sides of the air conditioner, for example, when the air conditioner is used in a kitchen, the kitchen will have a heat source (e.g., an induction cooker, a gas range, etc.) when a user cooks in the kitchen, wherein the heat source may or may not be an open flame.

At this moment, the ambient air temperature of the air conditioner close to one side of the heat source can be greater than the ambient air temperature of the air conditioner far away from one side of the heat source, and even the ambient air temperature of the air conditioner close to one side of the heat source can be greater than the temperature of the condenser close to the heat source, so that the heat exchange efficiency of the condenser close to one side of the heat source can be seriously influenced, the refrigeration efficiency of the air conditioner can be influenced, and the use experience of a user can be influenced.

And in this application, first detecting element can detect the return air temperature of first condenser to send the return air temperature of first condenser for the temperature detecting element, the second detecting element can detect the return air temperature of second condenser, and send the return air temperature of second condenser for the temperature detecting element. The temperature detection unit can determine the difference of the return air temperatures of the second condenser and the first condenser, and control the second water return component and the first water return component according to the difference of the return air temperatures to control the water flow flowing to the second condenser and the first condenser, so that the water flow flowing to the condenser with the low return air temperature is smaller than the water flow flowing to the condenser with the high return air temperature, the condenser with the high return air temperature is rapidly cooled, and the heat exchange efficiency of the condenser with the high return air temperature is improved.

Therefore, by the control method, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow of the condenser with high flow direction return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

Optionally, the control unit may include a central control unit, a first water amount control unit, and a second water amount control unit, where the central control unit may be in communication with the first water amount control unit, the second water amount control unit, the first detection unit, and the second detection unit, the central control unit may be configured to determine the return air temperature difference, the first water amount control unit may be configured to control the water flow rate of the first water return component, and the second water amount control unit may be configured to control the water flow rate of the second water return component.

Optionally, the first detection unit may be disposed corresponding to the first condenser, optionally, the first detection unit may be disposed on a surface of the first condenser, which is away from the air conditioner, and the second detection unit may be disposed corresponding to the second condenser, optionally, the second detection unit may be disposed on a surface of the second condenser, which is away from the air conditioner, thereby, the detection accuracy of the first detection unit may be ensured, the detection accuracy of the second detection unit may also be ensured, and the working reliability of the device may be further controlled.

Optionally, the air conditioner may further include: the compressor can be through the tube coupling between compressor, first condenser and the first evaporimeter, can the circulation refrigerant between compressor, first condenser and the first evaporimeter, and the refrigerant can carry out the heat exchange with the external air of first evaporimeter when flowing through first evaporimeter, from this, can realize the refrigeration effect of air conditioner.

Furthermore, the compressor, the second condenser and the second evaporator can be connected through pipelines, a refrigerant can circulate among the compressor, the second condenser and the second evaporator, and the refrigerant can exchange heat with air outside the second evaporator when flowing through the second evaporator, so that the refrigeration effect of the air conditioner can be realized.

Optionally, as some embodiments of the present invention, as shown in fig. 7, a first water inlet may be disposed on the middle partition, one end of the first water inlet may be disposed to be communicated with the first water receiving area, the other end of the first water inlet may be disposed to be communicated with the first water return pipeline, and condensed water in the water storage area may enter the first water receiving area through the first water return pipeline and the first water inlet.

Furthermore, a second water inlet can be further formed in the middle partition plate, one end of the second water inlet can be communicated with the second water receiving area, the other end of the second water inlet can be communicated with the second water return pipeline, and condensed water in the water storage area can enter the second water receiving area through the second water return pipeline and the second water inlet. Therefore, the condensed water in the water storage area can reliably flow into the first water receiving area and/or the second water receiving area.

As some embodiments of the present invention, as shown in fig. 4, the air conditioner may have an air outlet cavity, and cold air generated by the air conditioner may be blown out through the air outlet cavity, and optionally, a wind guide plate may be disposed on the air outlet cavity, and the wind guide plate may include a first wind guide plate and a second wind guide plate, the first wind guide plate may extend in the left-right direction shown in fig. 4, the second wind guide plate may extend in the up-down direction shown in fig. 4, and optionally, the number of the first wind guide plates may be multiple, and the multiple first wind guide plates may be spaced apart in the up-down direction shown in fig. 4.

Further, the first air guiding plate can swing up and down as shown in fig. 4, and when the first air guiding plate swings up and down as shown in fig. 4, the direction of the air sent into the room from the air outlet cavity can be changed, so that the function of air sweeping of the air conditioner up and down can be realized. In addition, the second air guiding plate can swing in the left and right directions shown in fig. 4, and when the second air guiding plate swings in the left and right directions shown in fig. 4, the direction of the air sent into the room from the air outlet cavity can be changed, so that the function of sweeping the air left and right of the air conditioner can be realized.

Furthermore, when the air conditioner is closed, the air guide plate can close the air outlet cavity, so that dust or mosquitoes and the like can be prevented from entering the air conditioner from the air outlet cavity, and clean and sanitary air can be generated when the air conditioner works.

As some embodiments of the present invention, a handle may be disposed on the top of the air conditioner, and both the left end and the right end of the handle may be fixed to the air conditioner through a connector, preferably, the connector may be a screw, and when the air conditioner needs to be moved, a user may lift the handle to carry the air conditioner, so that the user may lift the handle to carry the air conditioner, thereby enabling the user to carry the air conditioner with less effort.

In some embodiments of the present invention, when the return air temperature of the first condenser is greater than the return air temperature of the second condenser, if the return air temperature difference is greater than the first predetermined temperature difference, the water flow rate of the first water returning part may be increased, and the water flow rate of the second water returning part may be closed.

It should be noted that the first preset temperature difference may be preset, and the specific temperature difference of the first preset temperature difference may be set as needed, which is not limited in this application. If the return air temperature difference is greater than the first preset temperature difference, the working environment of the first condenser is worse than that of the second condenser, at the moment, the water flow flowing from the water storage area to the first water receiving area can be increased by controlling the first water returning part, and the water flow flowing from the water storage area to the second water receiving area can be closed by controlling the second water returning part (namely, the water flow flowing from the water storage area to the second water receiving area is zero at the moment).

Further, when the return air temperature of the first condenser is higher than that of the second condenser, if the return air temperature difference is smaller than or equal to a first preset temperature difference and larger than a second preset temperature difference, the water flow of the first water return component can be increased, and the water flow of the second water return component can be reduced.

It should be understood that the second preset temperature difference may be preset, and the specific temperature difference of the second preset temperature difference may be set as required, which is not limited in this application. If the return air temperature difference is greater than the second preset temperature difference, and the return air temperature difference is not greater than the first preset temperature difference (it can be understood that the second preset temperature difference is less than the first preset temperature difference), at this moment, the water flow from the water storage area to the first water receiving area can be increased by controlling the first water returning component, and the water flow from the water storage area to the second water receiving area can be reduced by controlling the second water returning component (namely, the water flow from the water storage area to the second water receiving area is less than the water flow from the water storage area to the first water receiving area at this moment).

From this, can come the discharge of control second return water part and first return water part according to the return air temperature difference to cool off the condenser that return air temperature is high fast, with the heat exchange efficiency who improves the condenser that return air temperature is high, with the refrigeration efficiency who improves the air conditioner, experience with the use that promotes the user.

Optionally, the second preset temperature difference may be set to 5 degrees celsius, the first preset temperature difference may be set to 10 degrees celsius, it can be understood that the specific values of the second preset temperature difference and the first preset temperature difference may be set according to actual requirements, the specific values of the second preset temperature difference and the first preset temperature difference are not limited to the above-described values, for example, the second preset temperature difference may also be set to 10 degrees celsius, and the first preset temperature difference may also be set to 15 degrees celsius.

The second preset temperature difference is set to 5 degrees celsius, and the first preset temperature difference is set to 10 degrees celsius, for example.

As an embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 17 degrees celsius, and the second detecting unit detects that the return air temperature of the second condenser is 11 degrees celsius, the central control unit may determine that the difference between the return air temperatures is 6 degrees celsius, since 6 degrees celsius is greater than 5 degrees celsius and 6 degrees celsius is less than 10 degrees celsius, and the return air temperature of the first condenser is greater than the return air temperature of the second condenser, at this time, the first water control unit may control the first water return component to increase the water flow rate flowing from the water storage area to the first water receiving area, and the second water control unit may control the second water return component to decrease the water flow rate flowing from the water storage area to the second water receiving area.

From this, can come the discharge of control second return water part and first return water part according to return air temperature difference to cool off first condenser fast, in order to improve the heat exchange efficiency of first condenser, in order to improve the refrigeration efficiency of air conditioner, in order to promote user's use and experience.

As another embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 23 degrees celsius and the second detecting unit detects that the return air temperature of the second condenser is 11 degrees celsius, the central control unit may determine that the difference between the return air temperatures is 12 degrees celsius, and since 12 degrees celsius is greater than 10 degrees celsius and the return air temperature of the first condenser is greater than the return air temperature of the second condenser, the first water amount control unit may control the first water return component to increase the water flow rate flowing from the water storage region to the first water receiving region, and the second water amount control unit may control the second water return component to close the water flow rate flowing from the water storage region to the second water receiving region.

From this, can come the discharge of control second return water part and first return water part according to return air temperature difference to, can cool off first condenser more fast, in order to improve the heat exchange efficiency of first condenser, in order to improve the refrigeration efficiency of air conditioner, in order to promote user's use and experience.

In some embodiments of the present invention, when the return air temperature of the second condenser is greater than the return air temperature of the first condenser, if the return air temperature difference is greater than the first preset temperature difference, the water flow rate of the second water returning component may be increased, and the water flow rate of the first water returning component may be closed.

It should be noted that the first preset temperature difference may be preset, and the specific temperature difference of the first preset temperature difference may be set as required, which is not limited in this application. If the return air temperature difference is larger than the first preset temperature difference, the working environment of the second condenser is worse than that of the first condenser, at the moment, the water flow flowing from the water storage area to the second water receiving area can be increased by controlling the second water return component, and the water flow flowing from the water storage area to the first water receiving area can be closed by controlling the first water return component (namely, the water flow flowing from the water storage area to the first water receiving area is zero at the moment).

Further, when the return air temperature of the second condenser is greater than the return air temperature of the first condenser, if the return air temperature difference is less than or equal to a first preset temperature difference and greater than a second preset temperature difference, the water flow of the second water return component can be increased, and the water flow of the first water return component can be reduced.

It should be understood that the second preset temperature difference may be preset, and the specific temperature difference of the second preset temperature difference may be set as required, which is not limited in this application. If the return air temperature difference is greater than the second preset temperature difference, and the return air temperature difference is not greater than the first preset temperature difference (it can be understood that the second preset temperature difference is less than the first preset temperature difference), at this moment, the water flow from the water storage area to the first water receiving area can be reduced by controlling the first water returning component, and the water flow from the water storage area to the second water receiving area can be increased by controlling the second water returning component (namely, the water flow from the water storage area to the second water receiving area is greater than the water flow from the water storage area to the first water receiving area at this moment).

As an embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 11 degrees celsius, and the second detecting unit detects that the return air temperature of the second condenser is 17 degrees celsius, the central control unit may determine that the difference between the return air temperatures is 6 degrees celsius, since 6 degrees celsius is greater than 5 degrees celsius and 6 degrees celsius is less than 10 degrees celsius, and the return air temperature of the first condenser is less than the return air temperature of the second condenser, at this time, the first water control unit may control the first water return component to reduce the water flow rate flowing from the water storage area to the first water receiving area, and the second water control unit may control the second water return component to increase the water flow rate flowing from the water storage area to the second water receiving area.

From this, can control the discharge of second return water part and first return water part according to the return air temperature difference to cool off the second condenser fast, with the heat exchange efficiency who improves the second condenser, with the refrigeration efficiency who improves the air conditioner, experience with the use that promotes the user.

As another embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 11 degrees celsius and the second detecting unit detects that the return air temperature of the second condenser is 23 degrees celsius, the central control unit may determine that the difference between the return air temperatures is 12 degrees celsius, and since 12 degrees celsius is greater than 10 degrees celsius and the return air temperature of the first condenser is less than the return air temperature of the second condenser, the first water amount control unit may control the first water return component to close the water flow flowing from the water storage region to the first water receiving region, and the second water amount control unit may control the second water return component to increase the water flow flowing from the water storage region to the second water receiving region.

From this, can come the discharge of control second return water part and first return water part according to return air temperature difference to, can cool off the second condenser more fast, in order to improve the heat exchange efficiency of second condenser, in order to improve the refrigeration efficiency of air conditioner, in order to promote user's use and experience.

In some embodiments of the invention, the water returning part may comprise a water pump, and in particular, the second water returning part and the first water returning part may comprise a second water pump and a first water pump, respectively, wherein the water flow rate of the first water returning part may be changed by controlling the rotation speed of the first water pump, or the water flow rate of the first water returning part may be changed by controlling the operation time and the rotation speed of the first water pump.

And the water flow of the second water return component can be changed by controlling the rotating speed of the second water pump, or the water flow of the second water return component can be changed by controlling the running time and the rotating speed of the second water pump.

Therefore, the water flow of the water return component can be controlled by controlling the running time and/or the rotating speed of the water pump, so that the water flow of the water return component can be reliably and accurately controlled, and the reliability of the control method can be ensured.

As an embodiment of the present invention, the second predetermined temperature difference is set to 5 degrees celsius, and the first predetermined temperature difference is set to 10 degrees celsius. When the return air temperature that first detecting element detected out first condenser was 17 degrees centigrade, the return air temperature that second detecting element detected out the second condenser was when 11 degrees centigrade, the central control unit can confirm that the return air temperature difference is 6 degrees centigrade, because 6 degrees centigrade are greater than 5 degrees centigrade, and 6 degrees centigrade are less than 10 degrees centigrade, and the return air temperature of first condenser is greater than the return air temperature of second condenser.

At this time, the rotation speeds of the first water pump and the second water pump may be controlled, for example, the rotation speed of the first water pump may be increased, and the rotation speed of the second water pump may be decreased, alternatively, the rotation speed of the first water pump may be increased by 500rpm (i.e., the rotation speed of the first water pump may be increased by 500 r/min), and the rotation speed of the second water pump may be decreased by 500rpm (i.e., the rotation speed of the second water pump may be decreased by 500 r/min).

It will be appreciated that as the speed of rotation of the first water pump increases, the water flow rate of the first water returning means increases accordingly, as the speed of rotation of the first water pump decreases, the water flow rate of the first water returning means decreases accordingly, and that as the speed of rotation of the second water pump increases, the water flow rate of the second water returning means increases accordingly, and as the speed of rotation of the second water pump decreases, the water flow rate of the second water returning means decreases accordingly.

From this, can be through the rotational speed of increase first water pump, reduce the rotational speed of second water pump to the corresponding discharge of the first backwater part of increase, and the corresponding discharge that reduces the second backwater part, thereby can cool off first condenser fast, can improve the heat exchange efficiency of first condenser, can improve the refrigeration efficiency of air conditioner, can promote user's use and experience.

Alternatively, the amount of change in the rotation speed of the first water pump and the amount of change in the rotation speed of the second water pump may be the same, for example, when the rotation speed of the first water pump is increased by 500rpm, the rotation speed of the second water pump may be decreased by 500rpm, whereby the reliability of the control method may be further ensured.

As another specific embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 23 degrees celsius and the second detecting unit detects that the return air temperature of the second condenser is 11 degrees celsius, the central control unit may determine that the return air temperature difference is 12 degrees celsius, since 12 degrees celsius is greater than 10 degrees celsius and the return air temperature of the first condenser is greater than the return air temperature of the second condenser.

At this time, the rotation speeds of the first water pump and the second water pump may be controlled, optionally, the rotation speed of the first water pump may be fully opened (that is, the rotation speed of the first water pump may be opened to the maximum rotation speed), optionally, the maximum rotation speed of the first water pump may be a rated rotation speed of the first water pump, and the second water pump may be turned off (that is, the rotation speed of the second water pump may be 0 r/min).

From this, can open to the maximum rotational speed through the rotational speed that makes first water pump and close the second water pump to the corresponding discharge of the first backwater part of increase, and make the discharge of second backwater part be zero, thereby can cool off first condenser more fast, can further improve the heat exchange efficiency of first condenser, can further improve the refrigeration efficiency of air conditioner, can further promote user's use and experience.

In some embodiments of the present invention, the water returning part may further include a solenoid valve, and in particular, the second water returning part and the first water returning part may include a second solenoid valve and a first solenoid valve, respectively, wherein the water flow rate of the first water returning part may be changed by controlling the opening degree of the first solenoid valve, and the water flow rate of the second water returning part may be changed by controlling the opening degree of the second solenoid valve.

Therefore, the water flow of the water return component can be controlled by controlling the opening of the electromagnetic valve, so that the water flow of the water return component can be reliably and accurately controlled, and the use reliability of the control device can be ensured.

As an embodiment of the present invention, the second predetermined temperature difference is set to 5 degrees celsius, and the first predetermined temperature difference is set to 10 degrees celsius. When the first detection unit detects that the return air temperature of the first condenser is 17 degrees centigrade and the second detection unit detects that the return air temperature of the second condenser is 11 degrees centigrade, the central control unit can determine that the return air temperature difference is 6 degrees centigrade, because 6 degrees centigrade is greater than 5 degrees centigrade and 6 degrees centigrade is less than 10 degrees centigrade, and the return air temperature of the first condenser is greater than the return air temperature of the second condenser.

At this time, the opening degrees of the second solenoid valve and the first solenoid valve may be controlled, for example, the opening degree of the first solenoid valve may be increased, and the opening degree of the second solenoid valve may be decreased, alternatively, the opening degree of the first solenoid valve may be increased by 20%, and the opening degree of the second solenoid valve may be decreased by 20%.

It can be understood that when the opening degree of the first electromagnetic valve is increased, the water flow rate of the first water returning part is correspondingly increased, when the opening degree of the first electromagnetic valve is decreased, the water flow rate of the first water returning part is correspondingly decreased, when the opening degree of the second electromagnetic valve is increased, the water flow rate of the second water returning part is correspondingly increased, and when the opening degree of the second electromagnetic valve is decreased, the water flow rate of the second water returning part is correspondingly decreased.

From this, can be through the aperture of increase first solenoid valve, reduce the aperture of second solenoid valve to the corresponding discharge of the first return water part of increase, and the corresponding discharge that reduces the second return water part, thereby can cool off first condenser fast, can improve the heat exchange efficiency of first condenser, can improve the refrigeration efficiency of air conditioner, can promote user's use and experience.

Alternatively, the amount of change in the first solenoid valve opening degree and the amount of change in the second solenoid valve opening degree may be the same, for example, when the opening degree of the first solenoid valve is increased by 20%, the second solenoid valve opening degree may be decreased by 20%, whereby the reliability of use of the control device may be further ensured.

As another embodiment of the present invention, when the first detecting unit detects that the return air temperature of the first condenser is 23 degrees celsius and the second detecting unit detects that the return air temperature of the second condenser is 11 degrees celsius, the central control unit may determine that the difference between the return air temperatures is 12 degrees celsius, since 12 degrees celsius is greater than 10 degrees celsius, and the return air temperature of the first condenser is greater than the return air temperature of the second condenser.

In this case, the opening degrees of the second solenoid valve and the first solenoid valve may be controlled, and for example, the first solenoid valve may be fully opened (that is, the opening degree of the first solenoid valve may be set to 100%), and the second solenoid valve may be closed (that is, the opening degree of the second solenoid valve may be set to 0%).

From this, can be through making first solenoid valve open fully, make the second solenoid valve close to the corresponding discharge of the first backwater part of increase, and make the discharge of the second backwater part be zero, thereby can cool off first condenser more fast, can further improve the heat exchange efficiency of first condenser, can further improve the refrigeration efficiency of air conditioner, can further promote user's use and experience.

Alternatively, as some embodiments of the present invention, as shown in fig. 6, when the second electromagnetic valve and the first electromagnetic valve are provided, the number of the water pumps may be set to one, the water pumps may be provided to be communicated with both the first water return pipeline and the second water return pipeline, the first electromagnetic valve may be provided on the first water return pipeline, and the second electromagnetic valve may be provided on the second water return pipeline, so that the water flow rate of the water return component may be controlled by controlling the opening degree of the electromagnetic valve, and the number of parts of the air conditioner may be reduced, thereby reducing the production cost of the air conditioner.

Specifically, as shown in fig. 9, as an embodiment of the present invention, the control method may include the following steps:

s01, detecting the return air temperature of the first condenser and the return air temperature of the second condenser;

s02, determining a return air temperature difference value;

s03, judging whether the return air temperature of the first condenser is higher than that of the second condenser;

s04, judging whether the return air temperature difference value is larger than a first preset temperature difference value or not;

s05, increasing the rotating speed of the first water pump, and closing the second water pump;

s06, judging whether the return air temperature difference value is larger than a second preset temperature difference and smaller than or equal to a first preset temperature difference;

s07, increasing the rotating speed of the first water pump and reducing the rotating speed of the second water pump;

s08, judging whether the return air temperature of the first condenser is lower than that of the second condenser;

s09, judging whether the return air temperature difference value is larger than a first preset temperature difference or not;

s10, increasing the rotating speed of the second water pump, and closing the first water pump;

s11, judging whether the return air temperature difference value is larger than a second preset temperature difference and smaller than or equal to a first preset temperature difference;

and S12, increasing the rotating speed of the second water pump and reducing the rotating speed of the first water pump.

In step S03, if yes, the process proceeds to step S04, and if no, the process proceeds to step S08. In step S04, if yes, the process proceeds to step S05, and if no, the process proceeds to step S06. If yes in step S06, the process proceeds to step S07. If yes in step S08, the process proceeds to step S09. In step S09, if yes, the process proceeds to step S10, and if no, the process proceeds to step S11. If yes in step S11, the process proceeds to step S12.

In order to achieve the above embodiments, the present invention proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, can implement the control method of the air conditioner of the above embodiments.

According to the computer-readable storage medium provided by the embodiment of the invention, the first water return part and the second water return part can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

In order to implement the above embodiments, the present invention further provides an air conditioner, where the air conditioner includes a memory, a processor, and a control program of the air conditioner, the control program of the air conditioner is stored in the memory and is executable on the processor, and when the processor executes the control program of the air conditioner, the control method of the air conditioner in the above embodiments can be implemented.

According to the air conditioner disclosed by the embodiment of the invention, the processor executes the control method of the air conditioner stored in the memory, and the first water return component and the second water return component can be controlled according to the return air temperature of the first condenser and the return air temperature of the second condenser, so that the water flow flowing to the condenser with high return air temperature can be improved, the heat exchange efficiency of the condenser can be improved, the refrigeration efficiency of the air conditioner can be improved, and the use experience of a user can be improved.

As shown in fig. 8, the air conditioner may include at least one processor 1201, at least one communication interface 1202, at least one memory 1203 and at least one communication bus 1204. In the embodiment of the present invention, the number of the processor 1201, the communication interface 1202, the memory 1203 and the communication bus 1204 is at least one, and the processor 1201, the communication interface 1202 and the memory 1203 complete communication with each other through the communication bus 1204.

The Memory 1203 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 1203 is configured to store a program, and the processor 1201 executes the program after receiving the execution instruction, so as to implement the steps of the control method of the air conditioner described in the above embodiment.

The processor 1201 may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should be noted that the logic and/or steps shown in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the invention, "on" or "under" a first feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact via another feature between them.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method of controlling an air conditioner, comprising:

detecting the return air temperature of the first condenser and the return air temperature of the second condenser;

determining a return air temperature difference value according to the return air temperature of the first condenser and the return air temperature of the second condenser, and controlling a first water return component and a second water return component according to the return air temperature difference value so as to enable the water flow flowing to the condenser with high return air temperature to be larger than the water flow flowing to the condenser with low return air temperature;

the air conditioner comprises an air conditioner body, a first evaporator, a second evaporator, a middle partition plate, a first condenser, a second condenser, a chassis, a first water return part and a second water return part, wherein the middle partition plate divides the air conditioner body into a first cavity and a second cavity, the first evaporator and the second evaporator are oppositely arranged in the first cavity, the first condenser and the second condenser are oppositely arranged in the second cavity, the middle partition plate is provided with a first water receiving area for receiving condensed water of the first evaporator and a second water receiving area for receiving condensed water of the second evaporator, the condensed water of the first water receiving area is guided to the first condenser, the condensed water of the second water receiving area is guided to the second condenser, the first water return part is used for pumping the condensed water in the chassis to the first water receiving area, and the second water return part is used for pumping the condensed water in the chassis to the second water receiving area;

controlling the first water returning part and the second water returning part according to the return air temperature difference value, and the method comprises the following steps: and judging the return air temperature of the first condenser and the return air temperature of the second condenser, calculating a difference value, judging the size of the difference value and a first preset temperature difference and/or a second preset temperature difference, and controlling the first water return component and/or the second water return component to execute corresponding operation according to the two judgment results.

2. The method of claim 1, wherein controlling the first and second water return components based on the return air temperature differential comprises:

when the return air temperature of the first condenser is higher than that of the second condenser, if the return air temperature difference is higher than a first preset temperature difference, the water flow of the first water return part is increased, and the water flow of the second water return part is closed.

3. The method of claim 2, wherein controlling the first and second water return components based on the return air temperature differential further comprises:

the return air temperature of the first condenser is larger than that of the second condenser, if the return air temperature difference value is larger than a second preset temperature difference and smaller than or equal to the first preset temperature difference, the water flow of the first water return part is increased, and the water flow of the second water return part is reduced.

4. The method of claim 1, wherein controlling the first and second water return components based on the return air temperature differential comprises:

when the return air temperature of the first condenser is lower than that of the second condenser, if the return air temperature difference is larger than a first preset temperature difference, the water flow of the second water return component is increased, and the water flow of the first water return component is closed.

5. The method of claim 4, wherein controlling the first and second water return components based on the return air temperature differential further comprises:

and when the return air temperature of the first condenser is lower than that of the second condenser, if the return air temperature difference is greater than a second preset temperature difference and less than or equal to the first preset temperature difference, increasing the water flow of the second water return component and reducing the water flow of the first water return component.

6. The method according to any one of claims 1-5, wherein the first water return component comprises a first water pump and the second water return component comprises a second water pump, wherein controlling the first water return component and the second water return component comprises:

and the water flow of the first water return part and the water flow of the second water return part are correspondingly changed by controlling the rotating speed and/or the operating time of the first water pump and the rotating speed and/or the operating time of the second water pump.

7. The method according to any one of claims 1-5, wherein the first water return component comprises a first solenoid valve and the second water return component comprises a second solenoid valve, wherein controlling the first water return component and the second water return component comprises:

and the water flow of the first water return part and the water flow of the second water return part are correspondingly changed by controlling the opening degree of the first electromagnetic valve and the opening degree of the second electromagnetic valve.

8. A method according to claim 1, wherein the first water return component comprises a first water pump and the second water return component comprises a second water pump, the first water pump being configured to control the flow of water from the first water return component and the second water pump being configured to control the flow of water from the second water return component.

9. The method of claim 8, wherein the first water return component comprises a first solenoid valve and the second water return component comprises a second solenoid valve, the first solenoid valve being configured to regulate a water flow of the first water return component and the second solenoid valve being configured to regulate a water flow of the second water return component.

10. A computer-readable storage medium characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the control method of the air conditioner according to any one of claims 1 to 9.

11. An air conditioner, comprising a memory, a processor and a control program of the air conditioner stored on the memory and operable on the processor, wherein the processor implements the control method of the air conditioner according to any one of claims 1 to 7 when executing the control program of the air conditioner.

12. A control device of an air conditioner is characterized in that the air conditioner comprises an air conditioner body, a first evaporator, a second evaporator, a middle partition plate, a first condenser, a second condenser, a chassis, a first water return part and a second water return part, the air conditioner body is divided into a first cavity and a second cavity by the middle partition plate, the first evaporator and the second evaporator are oppositely arranged in the first cavity, the first condenser and the second condenser are oppositely arranged in the second cavity, a first water receiving area used for receiving condensed water of the first evaporator and a second water receiving area used for receiving condensed water of the second evaporator are arranged on the middle partition plate, the condensed water of the first water receiving area is guided to the first condenser, the condensed water of the second water receiving area is guided to the second condenser, the first water return part is used for pumping the condensed water in the chassis to the first water receiving area, the second water return part is used for pumping the condensed water in the chassis to the second water receiving area, and the control device comprises:

the temperature detection unit is used for detecting the return air temperature of the first condenser and the return air temperature of the second condenser;

the control unit is used for determining a return air temperature difference value according to the return air temperature of the first condenser and the return air temperature of the second condenser, and controlling the first water return part and the second water return part according to the return air temperature difference value so as to enable the water flow flowing to the condenser with high return air temperature to be larger than the water flow flowing to the condenser with low return air temperature;

controlling the first water return component and the second water return component according to the return air temperature difference value, and the method comprises the following steps: and judging the return air temperature of the first condenser and the return air temperature of the second condenser, calculating a difference value, judging the size of the difference value and a first preset temperature difference and/or a second preset temperature difference, and controlling the first water return component and/or the second water return component to execute corresponding operation according to the two judgment results.