Air conditioner control method and air conditioner

Abstract

The application discloses an air conditioner control method and an air conditioner, and the method comprises the following steps: acquiring a current outdoor environment temperature after a compressor is started to operate for a preset first time; acquiring a current outdoor unit mainboard temperature after the air conditioner operates for a preset second time when the current outdoor environment temperature is greater than or equal to a preset first outdoor environment temperature threshold value; controlling the air conditioner to execute a first cooling strategy if the current outdoor unit mainboard temperature is greater than or equal to a preset first outdoor unit mainboard temperature threshold value; and controlling the air conditioner to execute a second cooling strategy until the current outdoor unit mainboard temperature is less than a preset second outdoor unit mainboard temperature threshold value. The method can effectively reduce the temperature of the outdoor unit mainboard, avoid overheating of key electronic components on the outdoor unit mainboard, ensure the refrigeration effect under high-temperature working conditions, avoid shutdown of the air conditioner, and thus improve the operation stability of the air conditioner and improve the use experience of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner control method and an air conditioner. BACKGROUND

[0002] With the rapid progress of science and technology and the continuous improvement of living quality, air conditioners have become an indispensable electrical appliance in modern families. The increasing sophistication of home appliance industry technology and the fierce market competition have further driven the consumer demand for air conditioner quality.

[0003] However, the current air conditioner faces challenges in high-temperature environments: under high-temperature working conditions, the heat dissipation efficiency of the outdoor unit of the air conditioner is limited, and the key electronic components on the mainboard of the outdoor unit may exceed the safe operating threshold due to excessive temperature. On the one hand, this shortens the service life of these electronic components, and on the other hand, the limited heat generation of these electronic components during high-temperature refrigeration further leads to reduced refrigeration effect, and in severe cases, even causes the air conditioner to shut down, greatly reducing the operating stability of the air conditioner, thereby affecting the user's experience. SUMMARY

[0004] Therefore, the purpose of the present application is to overcome the defects or deficiencies of the prior art, provide an air conditioner control method which can effectively reduce the temperature of the outdoor unit mainboard, avoid overheating of the key electronic components on the outdoor unit mainboard, and at the same time, ensure the refrigeration effect under high-temperature working conditions, avoid the shutdown of the air conditioner, thereby improving the operating stability of the air conditioner and improving the user's experience.

[0005] The present application is achieved by the following technical scheme: an air conditioner control method, comprising

[0006] After the compressor is started and runs for a preset first time, the current outdoor environment temperature is obtained;

[0007] If the current outdoor environment temperature is greater than or equal to a preset first outdoor environment temperature threshold, the air conditioner is controlled to continue running, and after running for a preset second time, the current outdoor unit mainboard temperature is obtained;

[0008] If the current outdoor unit mainboard temperature is greater than or equal to a preset first outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute a first cooling strategy, the first cooling strategy comprising controlling the outdoor fan to run in reverse at a preset first speed, while the compressor runs at a preset first frequency, the indoor fan runs at a preset second speed, and the expansion valve opening degree is adjusted to a preset first opening degree, wherein the preset first frequency is less than the compressor frequency set in the normal mode of the air conditioner, the preset second speed is less than the indoor fan speed set in the normal mode of the air conditioner, and the preset first opening degree is greater than the expansion valve opening degree set in the normal mode of the air conditioner;

[0009] If the current outdoor unit mainboard temperature is less than a preset second outdoor unit mainboard temperature threshold value, the air conditioner is controlled to execute a second cooling strategy, the second cooling strategy comprising controlling the outdoor fan to run in forward rotation at a preset third rotating speed, simultaneously controlling the compressor to run at a preset second frequency, controlling the indoor fan to run at an indoor fan rotating speed set in a normal mode of the air conditioner, and adjusting the opening degree of the expansion valve to a preset second opening degree, wherein the preset second outdoor unit mainboard temperature threshold value is less than the preset first outdoor unit mainboard temperature threshold value, the preset second frequency is greater than the preset first frequency and less than a compressor frequency set in the normal mode of the air conditioner, the preset second opening degree is greater than the preset first opening degree and less than an expansion valve opening degree set in the normal mode of the air conditioner, and the preset third rotating speed is greater than an outdoor fan rotating speed set in the normal mode of the air conditioner.

[0010] Compared with the prior art, the air conditioner control method provided by the application can effectively reduce the temperature of the outdoor unit mainboard, avoid overheating of key electronic components on the outdoor unit mainboard, ensure the refrigeration effect under high-temperature working conditions, avoid shutdown of the air conditioner, improve the operation stability of the air conditioner, and improve the user experience.

[0011] Further, if the current outdoor unit mainboard temperature is greater than or equal to a preset third outdoor unit mainboard temperature threshold value after the first cooling strategy is executed, the air conditioner is controlled to execute a third cooling strategy, the third cooling strategy comprising controlling the outdoor fan to continue to run in reverse rotation at a preset fourth rotating speed, simultaneously controlling the compressor to run at a preset third frequency, controlling the indoor fan to run at a preset fifth rotating speed, and adjusting the opening degree of the expansion valve to a preset third opening degree, wherein the preset third outdoor unit mainboard temperature threshold value is greater than the preset first outdoor unit mainboard temperature threshold value, the preset fourth rotating speed is greater than the preset first rotating speed, the preset third frequency is less than the preset first frequency, the preset third opening degree is greater than the preset first opening degree, and the preset fifth rotating speed is less than the preset second rotating speed.

[0012] Further, if the current outdoor unit mainboard temperature is less than a fourth preset outdoor unit mainboard temperature threshold and less than the second preset outdoor unit mainboard temperature threshold after the third cooling strategy is executed, the air conditioner is controlled to execute a second cooling strategy, wherein the fourth preset outdoor unit mainboard temperature threshold is less than the third preset outdoor unit mainboard temperature threshold and greater than the first preset outdoor unit mainboard temperature threshold.

[0013] If the current outdoor unit mainboard temperature is less than the fourth preset outdoor unit mainboard temperature threshold and greater than or equal to the second preset outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the first cooling strategy.

[0014] Further, a second preset outdoor environment temperature threshold is further included, and if the current outdoor environment temperature is greater than the second preset outdoor environment temperature threshold, the air conditioner is controlled to execute the third cooling strategy, wherein the second preset outdoor environment temperature threshold is greater than the first preset outdoor environment temperature threshold.

[0015] Further, if the current outdoor environment temperature is less than the first preset outdoor environment temperature threshold, the current condenser coil temperature is acquired.

[0016] If the current condenser coil temperature is greater than or equal to a preset condenser coil temperature threshold, the air conditioner is controlled to execute the second cooling strategy.

[0017] Otherwise, the air conditioner is controlled to continue to operate in the operating mode set in the normal mode.

[0018] Further, if the current outdoor environment temperature is less than the first preset outdoor environment temperature threshold and the current condenser coil temperature is less than the preset condenser coil temperature threshold after the second cooling strategy is executed, the air conditioner is controlled to operate in the operating mode set in the normal mode.

[0019] Further, if the current outdoor environment temperature is greater than or equal to the first preset outdoor environment temperature threshold and the current outdoor unit mainboard temperature is less than the first preset outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the second cooling strategy.

[0020] The application further provides an air conditioner, comprising an outdoor unit and an indoor unit; the indoor unit is installed indoors, and comprises an indoor fan; the outdoor unit comprises a shell, a compressor, an outdoor fan, a condenser, an expansion valve, a partition plate and an electric control box; the shell has an inner cavity, the partition plate is arranged in the inner cavity of the shell, and divides the inner cavity of the shell into a first installation space and a second installation space; the outdoor fan and the condenser are arranged in the first installation space, the compressor and the expansion valve are arranged in the second installation space, the electric control box is arranged above the partition plate, the electric control box comprises an electric control box body, an outdoor mainboard arranged in the electric control box body and a heat dissipation fin for heat dissipation of the outdoor mainboard; the electric control box body is located in the second installation space, and the heat dissipation fin is located in the first installation space; the compressor, the outdoor fan, the expansion valve and the indoor fan are electrically connected with the outdoor mainboard; and the condenser, the compressor and the expansion valve are connected through pipelines.

[0021] The control device comprises a processor and a storage, and the storage stores a computer program for execution on the processor; and when the processor executes the computer program, the control method described above is realized.

[0022] Further, the diameters of the first through hole, the second through hole and the third through hole are 0.1mm-100mm.

[0023] For better understanding and implementation, the application is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The air conditioner control method flow of the application Figure 1 ;

[0025] Figure 2 The air conditioner control method flow of the application Figure 2 ;

[0026] Figure 3 The air conditioner control logic flow chart of the application

[0027] Figure 4 The structure diagram of the air conditioner of the application Figure 1 ;

[0028] Figure 2 The structure diagram of the air conditioner of the application Figure 6 ;

[0029] Figure 3 The structure diagram of the air conditioner of the application Figures 1 to 3 . DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not used to limit the present application.

[0031] Embodiment one

[0032] The outdoor unit of the existing air conditioner usually adopts air suction heat exchange, that is, the outdoor fan rotates forward, the external air first exchanges heat through the condenser, and then exchanges heat through the outdoor unit mainboard. The temperature of the heat dissipation airflow is relatively high, which leads to poor heat dissipation effect of the outdoor unit mainboard. Especially when the air conditioner operates in high-temperature working conditions, the heat dissipation of the outdoor unit mainboard is very limited, which easily leads to the temperature of some electronic components on the outdoor unit mainboard being too high, and then leads to these electronic components operating at a temperature higher than the safe operating threshold. This not only shortens the service life of these electronic components, but also even leads to the direct burning of these electronic components. In addition, the refrigeration effect is obviously weakened due to the overheating of these electronic components in high-temperature refrigeration, and in severe cases, the air conditioner may even stop, affecting the user's experience.

[0033] Therefore, the present embodiment provides an air conditioner control method to overcome the defects or deficiencies of the prior art. It should be noted that the above problems usually occur when the air conditioner is in a refrigeration mode or a dehumidification mode, that is, the air conditioner control method described in the present embodiment is mainly applied to the refrigeration mode or the dehumidification mode of the air conditioner. Of course, in actual application, the method provided in the present embodiment can be applied to other modes of the air conditioner according to actual needs to control the air conditioner more flexibly, and the present embodiment does not make specific limitations thereto.

[0034] As shown in ​ The air conditioner control method comprises:

[0035] Step S10, after the compressor is started and operated for a preset first time, the current outdoor environment temperature is obtained.

[0036] The compressor is started and operated for a preset first time, which means that the compressor is started and operated for a preset first time when the air conditioner receives a start instruction and enters a normal working mode (such as a refrigeration mode, a dehumidification mode, etc.). The preset first time is, for example, a min (a can be valued according to actual conditions).

[0037] The outdoor environment temperature refers to the environment temperature of the environment where the outdoor unit is located. In an optional embodiment, the current outdoor environment temperature can be obtained in real time through a sensor, and of course, the current outdoor environment temperature can also be obtained at regular intervals through a sensor, such as once every 10s (other values can also be set according to actual conditions).

[0038] Step S20, if the current outdoor environment temperature is greater than or equal to the preset first outdoor environment temperature threshold, the air conditioner is controlled to continue running, and after running for a preset second time, the current outdoor unit mainboard temperature is obtained.

[0039] The preset first outdoor environment temperature threshold is, for example, 40°C or 50°C (other values can also be set according to actual conditions).

[0040] In an optional embodiment, the temperature of different heat-generating components on the outdoor unit mainboard can be collected by a sensor and averaged to obtain the current outdoor unit mainboard temperature of the air conditioner. Of course, the temperature of the heat-generating component with the largest heat generation on the outdoor unit mainboard can also be collected by a sensor to obtain the current outdoor unit mainboard temperature of the air conditioner. The current outdoor unit mainboard temperature can be obtained in real time or at regular intervals.

[0041] Step S30, if the current outdoor unit mainboard temperature is greater than or equal to a preset first outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute a first cooling strategy, and the first cooling strategy includes controlling the outdoor fan to run in reverse rotation at a preset first rotation speed, the compressor to run at a preset first frequency, the indoor fan to run at a preset second rotation speed, and the expansion valve to run with a preset first opening degree.

[0042] The preset first outdoor unit mainboard temperature threshold can be set according to actual conditions. The preset first frequency is less than the compressor frequency set in the normal mode of the air conditioner, the preset second rotation speed is less than the indoor fan rotation speed set in the normal mode of the air conditioner, and the preset first opening degree is greater than the expansion valve opening degree set in the normal mode of the air conditioner. It should be noted that the preset first frequency, the preset first rotation speed, the preset second rotation speed, and the preset first opening degree are set according to actual conditions. The expansion valve is an electronic expansion valve, which is a prior art and will not be described here.

[0043] Step S40, until the current outdoor unit mainboard temperature is less than a preset second outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute a second cooling strategy, and the second cooling strategy includes controlling the outdoor fan to run in forward rotation at a preset third rotation speed, the compressor to run at a preset second frequency, the indoor fan to run at the indoor fan rotation speed set in the normal mode of the air conditioner, and the expansion valve to run with a preset second opening degree.

[0044] The preset second outdoor unit mainboard temperature threshold is less than the preset first outdoor unit mainboard temperature threshold, and can be set according to actual conditions. The preset second frequency is greater than the preset first frequency and less than the compressor frequency set in the normal mode of the air conditioner; the preset second opening degree is less than the preset first opening degree and greater than the expansion valve opening degree set in the normal mode of the air conditioner, and the preset third rotating speed is greater than the outdoor fan rotating speed set in the normal mode of the air conditioner. It should be noted that the preset second frequency, the preset third rotating speed and the preset second opening degree are set according to actual conditions.

[0045] In one embodiment, the method further comprises the step S50: if the current outdoor unit mainboard temperature is greater than or equal to a preset third outdoor unit mainboard temperature threshold after the first cooling strategy is executed, the air conditioner is controlled to execute a third cooling strategy, and the third cooling strategy comprises controlling the outdoor fan to continue to operate in reverse at a preset fourth rotating speed, controlling the compressor to operate at a preset third frequency, controlling the indoor fan to operate at a preset fifth rotating speed, and adjusting the expansion valve opening degree to a preset third opening degree.

[0046] The preset third outdoor unit mainboard temperature threshold is greater than the preset first outdoor unit mainboard temperature threshold, and can be set according to actual conditions. The preset third outdoor unit mainboard temperature threshold is greater than the preset first outdoor unit mainboard temperature threshold, the preset fourth rotating speed is greater than the preset first rotating speed, the preset third frequency is less than the preset first frequency, the preset third opening degree is greater than the preset first opening degree, and the preset fifth rotating speed is less than the preset second rotating speed. It should be noted that the preset third frequency is the lowest frequency of the compressor, and its specific value depends on the type of the compressor and is set according to actual conditions, and the preset fourth rotating speed, the preset fifth rotating speed and the preset third opening degree are set according to actual conditions. By setting the third outdoor unit temperature threshold and adopting the third cooling strategy, the situation that the outdoor unit mainboard temperature continues to rise due to an increase in refrigeration demand or poor outdoor unit ventilation and the like when the first cooling strategy is executed is prevented, and the current outdoor unit mainboard temperature is rapidly reduced by the third cooling strategy, thereby ensuring the operation reliability of the air conditioner.

[0047] In one embodiment, if the current outdoor unit mainboard temperature is less than a preset fourth outdoor unit mainboard temperature threshold and less than the second outdoor unit mainboard temperature threshold after the third cooling strategy is executed, the air conditioner is controlled to execute the second cooling strategy.

[0048] If the current outdoor unit mainboard temperature is less than the preset fourth outdoor unit mainboard temperature threshold and greater than or equal to the preset second outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the first cooling strategy.

[0049] The preset fourth outdoor unit mainboard temperature threshold is less than the preset third outdoor unit mainboard temperature threshold and greater than the preset first outdoor unit mainboard temperature threshold. The preset fourth outdoor unit mainboard temperature threshold can be set according to actual conditions. By setting the fourth outdoor unit mainboard temperature threshold, the first cooling strategy or the second cooling strategy can be switched when the current outdoor unit mainboard temperature is less than the fourth outdoor unit mainboard temperature threshold, and the refrigeration effect is gradually improved.

[0050] In one embodiment, a preset second outdoor environment temperature threshold is further included, and if the current outdoor environment temperature is greater than the preset second outdoor environment temperature threshold, the air conditioner is controlled to execute the third cooling strategy, wherein the preset second outdoor environment temperature threshold is greater than the preset first outdoor environment temperature threshold. The preset second outdoor environment temperature threshold is set according to actual conditions. By the preset second outdoor environment temperature threshold, the third cooling strategy is directly used for cooling when the current outdoor environment temperature is too high.

[0051] In one embodiment, if the current outdoor environment temperature is less than the preset first outdoor environment temperature threshold, the current condenser coil temperature is acquired;

[0052] If the current condenser coil temperature is greater than or equal to a preset condenser coil temperature threshold, the air conditioner is controlled to execute the second cooling strategy;

[0053] Otherwise, the air conditioner is controlled to continue to run in the running mode set in the normal mode.

[0054] The preset condenser coil temperature threshold can be set according to actual conditions. By the preset condenser coil temperature threshold, the situation that the temperature of the airflow after heat exchange at the condenser coil is too high due to an increase in refrigeration demand or an increase in indoor heat sources, resulting in poor heat dissipation effect at the outdoor unit mainboard, is avoided.

[0055] In one embodiment, if the current outdoor environment temperature is less than the preset first outdoor environment temperature threshold and the current condenser coil temperature is less than the preset condenser coil temperature threshold after the second cooling strategy is executed, the air conditioner is controlled to run in the running mode set in the normal mode.

[0056] In one embodiment, if the current outdoor environment temperature is greater than or equal to the preset first outdoor environment temperature threshold and the current outdoor unit mainboard temperature is less than the preset first outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the second cooling strategy.

[0057] Compared with the prior art, the air conditioner control method provided by the application can effectively reduce the temperature of the outdoor unit mainboard, avoid overheating of the key electronic components on the outdoor unit mainboard, ensure the refrigeration effect under high-temperature working conditions, avoid shutdown of the air conditioner, improve the operation stability of the air conditioner, and improve the user experience.

[0058] Embodiment two

[0059] The embodiment provides an air conditioner, which comprises an outdoor unit and an indoor unit. The indoor unit is installed indoors and comprises an indoor fan. The outdoor unit comprises a shell, a compressor (not shown in the figure), an outdoor fan (not shown in the figure), a condenser 17, an expansion valve (not shown in the figure), a partition plate 18 and an electric control box 19. The shell has an inner cavity. The partition plate 18 is arranged in the inner cavity of the shell and divides the inner cavity of the shell into a first installation space and a second installation space. The outdoor fan and the condenser 17 are arranged in the first installation space. The compressor and the expansion valve are arranged in the second installation space. The electric control box 19 is arranged above the partition plate 18. The electric control box 19 comprises an electric control box body, an outdoor unit mainboard (not shown in the figure) arranged in the electric control box body and a heat dissipation fin (not shown in the figure) for heat dissipation of the outdoor unit mainboard. The electric control box body is located in the second installation space. The heat dissipation fin is located in the first installation space. The compressor, the outdoor fan, the expansion valve and the indoor fan are electrically connected with the outdoor unit mainboard. The condenser 17, the compressor and the expansion valve are connected through pipelines.

[0060] The control device further comprises a processor and a storage. The storage stores a computer program for execution on the processor. When the processor executes the computer program, the control method described in Embodiment One is implemented.

[0061] In the embodiment, the shell comprises a front panel 11, a rear panel 12, a top panel 13, a left side panel 14, a right side panel 15 and a bottom panel 16, the front panel 11 is arranged at the front edge of the bottom panel 16, the left side panel 14 and the right side panel 15 are arranged at the left edge and the right edge of the bottom panel 16 respectively, the top panel 13 is arranged above and connected with the front panel 11, the left side panel 14 and the right side panel 15, thereby forming the inner cavity, and the condenser 17 and the rear panel 12 are arranged at the rear edge of the bottom panel 16 and located in the first mounting space and the second mounting space respectively to enclose the inner cavity.

[0062] In the embodiment, the front panel 11 is provided with a plurality of first through holes 111 at positions corresponding to the radiating fins, the first through holes 111 are communicated with the first mounting space, the rear panel 12 is provided with a plurality of second through holes 121, and the partition plate 18 is provided with a plurality of third through holes 181. Through the design of the first through holes, the second through holes and the third through holes, the heat dissipation effect of the mainboard is improved. The diameters of the first through holes, the second through holes and the third through holes are 0.1mm-100mm, of course, the diameters of the first through holes, the second through holes and the third through holes are not limited to 0.1mm-100mm, and can be other sizes, which are specifically determined according to actual conditions.

[0063] The terms used in the embodiments of the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that "a plurality of" means two or more, unless otherwise specified. The terms "first", "second", "third", etc. are used only to distinguish, not to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. The term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items. The above description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of the present application, the specific meanings of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

[0064] The above embodiments only express several embodiments of the present application, which are described in detail and specifically, but cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. An air conditioner control method, characterized in that, include After the compressor starts running for a preset first time, the current outdoor ambient temperature is obtained; If the current outdoor ambient temperature is greater than or equal to a preset first outdoor ambient temperature threshold, the air conditioner is controlled to continue running, and after a preset second running time, the current outdoor unit main board temperature is obtained; If the current outdoor unit main board temperature is greater than or equal to a preset first outdoor unit main board temperature threshold, the air conditioner is controlled to execute a first cooling strategy. The first cooling strategy includes controlling the outdoor fan to run in reverse at a preset first speed, while the compressor runs at a preset first frequency, the indoor fan runs at a preset second speed, and the expansion valve opening is adjusted to a preset first opening. The preset first frequency is less than the compressor frequency set in the normal mode of the air conditioner, the preset second speed is less than the indoor fan speed set in the normal mode of the air conditioner, and the preset first opening is greater than the expansion valve opening set in the normal mode of the air conditioner. Until the current outdoor unit mainboard temperature is lower than the preset second outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute a second cooling strategy. The second cooling strategy includes controlling the outdoor fan to run forward at a preset third speed, while the compressor runs at a preset second frequency, the indoor fan runs at the indoor fan speed set in the normal mode of the air conditioner, and the expansion valve opening is adjusted to a preset second opening. The preset second outdoor unit mainboard temperature threshold is lower than the preset first outdoor unit mainboard temperature threshold, the preset second frequency is greater than the preset first frequency and less than the compressor frequency set in the normal mode of the air conditioner, the preset second opening is less than the preset first opening and greater than the expansion valve opening set in the normal mode of the air conditioner, and the preset third speed is greater than the outdoor fan speed set in the normal mode of the air conditioner.

2. The air conditioner control method according to claim 1, characterized in that, If, after executing the first cooling strategy, the current outdoor unit mainboard temperature is greater than or equal to a preset third outdoor unit mainboard temperature threshold, then the air conditioner is controlled to execute a third cooling strategy. The third cooling strategy includes controlling the outdoor fan to continue reversing at a preset fourth speed, while the compressor operates at a preset third frequency, the indoor fan operates at a preset fifth speed, and the expansion valve opening is adjusted to a preset third opening. The preset third outdoor unit mainboard temperature threshold is greater than the preset first outdoor unit mainboard temperature threshold, the preset fourth speed is greater than the preset first speed, the preset third frequency is less than the preset first frequency, the preset third opening is greater than the preset first opening, and the preset fifth speed is less than the preset second speed.

3. The air conditioner control method according to claim 2, characterized in that, If, after executing the third cooling strategy, the current outdoor unit mainboard temperature is less than the preset fourth outdoor unit mainboard temperature threshold and less than the second outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the second cooling strategy, wherein the preset fourth outdoor unit mainboard temperature threshold is less than the preset third outdoor unit mainboard temperature threshold and greater than the preset first outdoor unit mainboard temperature threshold. If the current outdoor unit mainboard temperature is less than the preset fourth outdoor unit mainboard temperature threshold and greater than or equal to the preset second outdoor unit mainboard temperature threshold, the air conditioner is controlled to execute the first cooling strategy.

4. The air conditioner control method according to claim 2, characterized in that, It also includes a preset second outdoor ambient temperature threshold. If the current outdoor ambient temperature is greater than the preset second outdoor ambient temperature threshold, the air conditioner is controlled to execute the third cooling strategy, wherein the preset second outdoor ambient temperature threshold is greater than the preset first outdoor ambient temperature threshold.

5. The air conditioner control method according to claim 1, characterized in that, If the current outdoor ambient temperature is lower than the preset first outdoor ambient temperature threshold, obtain the current condenser coil temperature; If the current condenser coil temperature is greater than or equal to the preset condenser coil temperature threshold, then the air conditioner is controlled to execute the second cooling strategy. Otherwise, the air conditioner will continue to operate according to the normal mode settings.

6. The air conditioner control method according to claim 5, characterized in that, If, after executing the second cooling strategy, the current outdoor ambient temperature is less than the preset first outdoor ambient temperature threshold, and the current condenser coil temperature is less than the preset condenser coil temperature threshold, then the air conditioner will be controlled to operate in the normal mode.

7. The air conditioner control method according to claim 1, characterized in that, If the current outdoor ambient temperature is greater than or equal to the preset first outdoor ambient temperature threshold, and the current outdoor unit main board temperature is less than the preset first outdoor unit main board temperature threshold, the air conditioner is controlled to execute the second cooling strategy.

8. An air conditioner, characterized in that, The system includes an outdoor unit and an indoor unit. The indoor unit is installed indoors and includes an indoor fan. The outdoor unit includes a housing, a compressor, an outdoor fan, a condenser, an expansion valve, a partition plate, and an electrical control box. The housing has an inner cavity, and the partition plate is disposed in the inner cavity of the housing, dividing the inner cavity of the housing into a first installation space and a second installation space. The outdoor fan and the condenser are disposed in the first installation space, and the compressor and the expansion valve are disposed in the second installation space. The electrical control box is disposed above the partition plate and includes an electrical control box body, an outdoor unit main board disposed within the electrical control box body, and heat sinks for heat dissipation of the outdoor unit main board. The electrical control box body is located in the second installation space, and the heat sinks are located in the first installation space. The compressor, the outdoor fan, the expansion valve, and the indoor fan are all electrically connected to the outdoor unit main board, and the condenser, the compressor, and the expansion valve are connected through pipes. It also includes a control device, which includes a processor and a storage device, wherein the storage device stores a computer program for execution on the processor, and the processor executes the computer program to implement the control method as described in any one of claims 1-7.

9. The air conditioner according to claim 8, characterized in that, The housing includes a front panel and a rear panel. The rear panel is located in the second mounting space and is connected to the condenser. The front panel has several first through holes at positions corresponding to the heat sinks. The first through holes are connected to the first mounting space. The rear panel has several second through holes. The partition plate has several third through holes.

10. The air conditioner according to claim 9, characterized in that, The diameters of the first through hole, the second through hole, and the third through hole are 0.1 mm to 100 mm.

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