Inverter air conditioning system control method, device and inverter air conditioning

Abstract

The present invention relates to the field of air conditioning technology, and in particular, to a variable frequency air conditioning system control method, device, and variable frequency air conditioner. The variable frequency air conditioning system control method comprises: obtaining the wind speed of the air conditioning indoor unit; when the wind speed of the indoor unit decreases, obtaining the exhaust temperature of the air conditioning compressor; if the exhaust temperature is greater than or equal to the warning temperature, lowering the ambient temperature limit frequency of the compressor. The variable frequency air conditioning system control method, device, and variable frequency air conditioner provided by the present invention can make a prejudgment in advance when the pressure of the air conditioning system increases abnormally due to a sudden decrease in the wind speed of the indoor unit, and lower the frequency of the compressor in advance, so that the compressor can be reduced to a stable operating frequency earlier, and the system can be prevented from shutting down due to overvoltage protection or overtemperature protection as much as possible, which can not only improve the user experience, but also improve the stability of air conditioning operation and extend the life of the whole machine.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a variable frequency air conditioning system control method and device, and a variable frequency air conditioning. Background Art

[0002] During the normal operation of the variable frequency air conditioner, if the user lowers the wind speed of the indoor unit of the air conditioner, the wind speed of the internal fan will suddenly decrease, which may easily cause a sudden increase in system pressure and cause over-voltage protection of the whole machine. At the same time, the temperature of the internal and external coils will exceed the limit for a short time, causing over-temperature protection before the compressor frequency is reduced, and then causing the air conditioner to shut down, which not only affects the user experience, but also the air conditioner has poor operating stability and affects the life of the whole machine. Summary of the invention

[0003] The object of the present invention is to provide a variable frequency air conditioning system control method, device and variable frequency air conditioning, so as to alleviate the technical problem of variable frequency air conditioning in the prior art that the user may easily cause the air conditioning to shut down when lowering the wind speed.

[0004] The variable frequency air conditioning system control method provided by the present invention comprises:

[0005] Get the wind speed of the air conditioner indoor unit;

[0006] When the wind speed of the indoor unit decreases, obtaining the exhaust temperature of the air conditioning compressor;

[0007] If the exhaust temperature is greater than or equal to the warning temperature, the ambient temperature frequency limit of the compressor is lowered.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] When the exhaust temperature of the compressor is greater than or equal to the warning temperature, the system pressure will also reach the warning pressure, and the risk of air conditioning shutdown is high. At this time, the ambient temperature frequency limit of the compressor can be lowered to force the frequency of the compressor to drop under the limit of the ambient temperature frequency limit. Thus, the frequency of the compressor can be dropped in time under the system warning state without waiting for the system to reach the overload state. In other words, when the pressure of the air conditioning system rises abnormally due to a sudden drop in the indoor unit wind speed, if the air conditioner has a high risk of shutdown, the system can make a prediction in advance and lower the frequency of the compressor in advance, so that the compressor can be reduced to a stable operating frequency earlier, and the system can be prevented from shutting down due to overvoltage protection or overtemperature protection as much as possible. This can not only improve the user experience, but also improve the stability of air conditioning operation and extend the life of the whole machine.

[0010] As an implementable embodiment, the method includes: if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, lowering the ambient temperature limit frequency to a first limit frequency value, and lowering the frequency increase and decrease rate of the compressor to a first rate value.

[0011] The beneficial effect is that the stable operation of the system can be guaranteed while effectively reducing the risk of system downtime.

[0012] As an implementable embodiment, the method includes: if the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, then lowering the ambient temperature limit frequency to a second limit frequency value, and increasing the frequency increase and decrease rate of the compressor to a second rate value, and the first limit frequency value is greater than the second limit frequency value.

[0013] The beneficial effect is that downtime can be avoided as much as possible, ensuring user experience and stable air conditioning operation.

[0014] As an implementable embodiment, the method further includes: if the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, increasing the speed loop control ratio of the compressor to a preset ratio value.

[0015] The beneficial effect is that the coil temperature can be reduced more quickly, reducing system pressure.

[0016] As an implementable embodiment, the method further includes: if the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, increasing the wind speed of the indoor unit to a preset wind speed value.

[0017] The beneficial effect is that the system pressure can be reduced to a good state more quickly and stably.

[0018] As an implementable embodiment, the method further includes: if the exhaust temperature is greater than or equal to the over-limit temperature, controlling the compressor to stop, the motor of the air conditioner outdoor unit to run at a maximum speed, and the indoor unit to stop.

[0019] The beneficial effect is that it can prevent the compressor from being damaged and reduce the exhaust temperature and system pressure to a safe range as quickly as possible, while also ensuring user experience.

[0020] As an implementable embodiment, the step of obtaining the exhaust temperature of the air-conditioning compressor when the wind speed of the indoor unit decreases includes: obtaining the exhaust temperature of the air-conditioning compressor when the wind speed of the indoor unit decreases to the wind speed of silent wind or sleep wind;

[0021] And / or, the method further comprises: obtaining the operating frequency of the compressor, and if the operating frequency is the maximum frequency and the wind speed of the indoor unit decreases, executing the step of obtaining the exhaust temperature of the air-conditioning compressor

[0022] The beneficial effect is that it is convenient to save electricity.

[0023] As an implementable embodiment, the warning temperature is 90°C, the overload temperature is 95°C, and the over-limit temperature is 115°C;

[0024] And / or, the first frequency limit value is 50 Hz, and the second frequency limit value is 40 Hz;

[0025] And / or, the first rate value is 2s / Hz, and the second rate value is 0.5s / Hz.

[0026] The beneficial effect is that it can achieve the effect of ensuring user experience while reducing the frequency of air conditioner shutdown.

[0027] Accordingly, the present invention also provides a variable frequency air conditioning system control device, which includes:

[0028] A first acquisition module, used to acquire the wind speed of the indoor unit of the air conditioner;

[0029] A second acquisition module, used to acquire the exhaust temperature of the air-conditioning compressor when the wind speed of the indoor unit decreases;

[0030] The regulating module is used to lower the ambient temperature frequency limit of the compressor when the exhaust temperature is greater than or equal to the warning temperature.

[0031] The present invention also provides a variable frequency air conditioner, which comprises: a processor and a storage device; a computer program is stored on the storage device, and the computer program executes the above method when being executed by the processor.

[0032] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are executed.

[0033] The variable frequency air conditioning system control device, variable frequency air conditioning and computer-readable storage medium provided by the present invention can achieve the same technical effect as the variable frequency air conditioning system control method described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 A first schematic flow chart of a variable frequency air conditioning system control method provided by an embodiment of the present invention;

[0036] Figure 2A second schematic flow chart of a variable frequency air conditioning system control method provided by an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure of a variable frequency air conditioning system control device provided by an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 301 - first acquisition module; 302 - second acquisition module; 303 - adjustment module. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0042] Figure 1 A schematic flow chart of a variable frequency air conditioning system control method provided by an embodiment of the present invention, the method comprising:

[0043] S102, obtaining the wind speed of the indoor unit of the air conditioner.

[0044] S104: When the wind speed of the indoor unit decreases, the exhaust temperature of the air-conditioning compressor is obtained.

[0045] When the wind speed of the indoor unit decreases, there is a risk of abnormal increase in system pressure. At the same time, the temperatures of the internal and external coils are also prone to exceed the limit for a short time. At this time, it is necessary to further obtain the exhaust temperature of the compressor to determine the risk of the air conditioner shutting down due to overpressure protection or overtemperature protection.

[0046] S106: If the exhaust temperature is greater than or equal to the warning temperature, the ambient temperature frequency limit of the compressor is lowered.

[0047] Among them, the ambient temperature frequency limit is the maximum operating frequency that the air conditioner compressor can reach within the corresponding ambient temperature range; when the exhaust temperature of the compressor is greater than or equal to the warning temperature, the system pressure will also reach the warning pressure, and the risk of air conditioner shutdown is high. At this time, the ambient temperature frequency limit of the compressor can be lowered to force the frequency of the compressor to drop under the limit of the ambient temperature frequency limit. Thus, the frequency of the compressor can be dropped in time under the system warning state without waiting for the system to reach the overload state. In other words, when the pressure of the air conditioning system rises abnormally due to a sudden drop in the indoor unit wind speed, if the air conditioner has a high risk of shutdown, the system can make a prejudgment in advance and lower the frequency of the compressor in advance, so that the compressor can be reduced to a stable operating frequency earlier, and the system can be prevented from shutting down due to overvoltage protection or overtemperature protection as much as possible. This can not only improve the user experience, but also improve the stability of air conditioner operation and extend the life of the whole machine.

[0048] When the exhaust temperature is greater than or equal to the warning temperature, the system can control the variable frequency air conditioner according to different exhaust temperature levels, as follows:

[0049] A1, if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, the ambient temperature frequency limit is lowered to the first frequency limit value, and the frequency increase and decrease rate of the compressor is lowered to the first rate value. Among them, the first frequency limit value can be set to 50Hz, the normal frequency increase and decrease rate value of the compressor is 1s / Hz, and the first rate value can be set to 2s / Hz.

[0050] It should be noted that lowering the frequency increase or decrease rate of the compressor can slowly reduce the operating frequency of the compressor, minimize the fluctuation caused by the reduction in the operating frequency of the compressor, and ensure stable operation of the system; at this time, the exhaust temperature is lower than the overload temperature, and the compressor is not prone to shutdown in a short period of time. Therefore, a slower decrease in the compressor frequency can still effectively reduce the risk of system shutdown.

[0051] A2, if the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, the ambient temperature frequency limit value is lowered to the second frequency limit value, and the frequency increase and decrease rate of the compressor is increased to the second rate value, wherein the first frequency limit value is greater than the second frequency limit value. The second frequency limit value can be set to 40Hz, and the second rate value can be set to 0.5s / Hz.

[0052] It should be noted that when the exhaust temperature is greater than or equal to the overload temperature, the system shutdown risk is high and the compressor may shut down at any time. At this time, increasing the frequency increase and decrease rate of the compressor can make the compressor operating frequency drop quickly, increase the speed of reducing the system pressure and exhaust temperature, so as to avoid shutdown as much as possible, ensure user experience, and air conditioning operation stability. In addition, compared with the low-risk situation where the exhaust temperature is less than the overload temperature, when the exhaust temperature is greater than or equal to the overload temperature, lowering the ambient temperature frequency limit value by a larger margin can further increase the speed of reducing the system pressure and exhaust temperature and reduce the risk of shutdown.

[0053] Furthermore, while adjusting the compressor frequency, the speed loop control ratio of the compressor can also be increased to a preset ratio value to increase the sensitivity of the compressor motor and improve the motor operation speed response, thereby reducing the coil temperature and system pressure more quickly. Specifically, the speed loop control ratio of the compressor can be adjusted from 0.02 to 0.04.

[0054] The wind speed of the indoor unit can also be increased to a preset wind speed value to temporarily increase the air supply volume so that the system pressure can be reduced to a good state more quickly and stably. The preset wind speed value can be a medium wind speed.

[0055] A3: If the exhaust temperature is greater than or equal to the over-limit temperature, the compressor is controlled to stop, the motor of the air conditioner outdoor unit runs at the maximum speed, and the indoor unit is stopped.

[0056] It should be noted that when the exhaust temperature is greater than or equal to the over-limit temperature, the compressor is not easy to continue working. At this time, controlling the compressor to stop can prevent the compressor from being damaged; at the same time, controlling the motor of the outdoor unit to run at the maximum speed can improve the heat dissipation efficiency of the outdoor unit, so that the exhaust temperature and system pressure can be reduced to a safe range as soon as possible. Because the compressor is stopped, the indoor unit is controlled to stop, which can prevent the indoor unit from blowing cold air into the room in heating mode, or blowing hot air into the room in cooling mode, so as to ensure the user experience.

[0057] Specifically, the warning temperature can be selected as 90°C, the overload temperature can be selected as 95°C, and the over-limit temperature can be selected as 115°C. When the exhaust temperature is less than 90°C, the system pressure is normal, and the variable frequency air conditioner can operate normally in the user-set mode; when the exhaust temperature is between 90°C and 95°C, the system pressure enters the warning range, and the compressor parameters need to be adjusted in advance to prevent the system pressure from continuing to rise as much as possible; when the exhaust temperature is between 95°C and 115°C, the system pressure enters the overload range, and the compressor parameters need to be adjusted as soon as possible, and the indoor unit wind speed should be adjusted to quickly reduce the system pressure; when the exhaust temperature is greater than or equal to 115°C, the system pressure exceeds the limit, and the system needs to be shut down and dissipated as soon as possible to prevent damage to the compressor.

[0058] When the exhaust temperature drops below the warning temperature, the user setting mode is restored.

[0059] In the above step S104, it is preferred that the exhaust temperature of the air conditioner compressor is obtained when the wind speed of the indoor unit drops from a higher wind speed to the wind speed of the silent wind or the sleep wind. It should be noted that when the wind speed of the indoor unit drops from a higher wind speed to the wind speed of the silent wind or the sleep wind, it is more likely to cause an abnormal shutdown due to a sudden drop in wind speed. Only when this condition is met, the program for obtaining the exhaust temperature of the compressor is run. In other cases, there is no need to run the program for obtaining the exhaust temperature, so as to save electricity.

[0060] Of course, the program for obtaining the wind speed of the indoor unit of the air conditioner can also be set to run when the user issues an instruction to the air conditioner to run in silent mode or sleep mode, and does not need to run in other cases, so as to further save electricity. Specifically, as an implementable method, when obtaining the wind speed of the indoor unit, the wind speed before the user issues the instruction and the current wind speed can be obtained from the air conditioner storage module; as another implementable method, the air conditioner can be set to delay running the corresponding instruction after receiving the instruction of silent mode or sleep mode. At this time, the wind speed of the indoor unit can be directly obtained, and the signal of the indoor unit wind speed reduction can be directly identified.

[0061] Preferably, the operating frequency of the compressor can also be obtained. If the operating frequency of the compressor is the maximum frequency and the wind speed of the indoor unit decreases, the step of obtaining the exhaust temperature of the air-conditioning compressor in the above step S104 is performed. It should be noted that under the premise that the operating frequency of the compressor is the maximum frequency, the wind speed of the indoor unit decreases, which is more likely to cause a sudden increase in system pressure and a higher risk of abnormal shutdown. Only when this condition is met, the program for obtaining the exhaust temperature of the compressor is run. In other cases, there is no need to run the program for obtaining the exhaust temperature, which is convenient for saving electricity.

[0062] Figure 2 A schematic flow chart of a variable frequency air conditioning system control method provided by an embodiment of the present invention, the method comprising:

[0063] S201, start.

[0064] S202, obtaining the wind speed of the indoor unit of the air conditioner.

[0065] S203: If the indoor unit wind speed decreases, the compressor exhaust temperature T is obtained. 排 .

[0066] Specifically, when the air conditioner is running at high load and high frequency, it can be determined whether the indoor unit is adjusted to sleep mode or silent mode, resulting in a decrease in wind speed. If so, different control programs are run respectively by determining the exhaust temperature of the compressor.

[0067] S204, T 排 When the temperature is less than 90℃, the air conditioner is controlled to enter the user setting mode.

[0068] The user-set mode may be a silent mode or a sleep mode, or other modes.

[0069] S205, 90℃≤T 排 When the temperature is less than 95℃, adjust the ambient temperature limit frequency to 50Hz, and adjust the frequency increase and decrease rate of the first platform of the compressor to 2s / Hz.

[0070] This state lasts until T 排 <90℃, then, execute step S203.

[0071] S206, 95℃≤T 排 When the temperature is less than 115℃, adjust the control ratio parameter of the compressor speed loop to 0.04, adjust the ambient temperature limit frequency to 40Hz, adjust the frequency increase and decrease rate of the first platform of the compressor to 0.5s / Hz, and control the indoor unit wind speed to rise to the medium wind speed.

[0072] This state lasts until T 排 <90℃, then, execute step S203.

[0073] S207, T 排 When the temperature is ≥115℃, the compressor is controlled to stop immediately, the outdoor unit runs at the maximum speed to dissipate heat, and the indoor unit stops.

[0074] This state lasts until T 排 <90℃, then, execute step S203.

[0075] S208, end.

[0076] Figure 3 A schematic diagram of the structure of a variable frequency air conditioning system control device provided by an embodiment of the present invention, the device comprises:

[0077] The first acquisition module 301 is used to acquire the wind speed of the indoor unit of the air conditioner;

[0078] The second acquisition module 302 is used to acquire the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit decreases;

[0079] The regulating module 303 is used to lower the ambient temperature frequency limit of the compressor when the exhaust temperature is greater than or equal to the warning temperature.

[0080] The variable frequency air conditioning system control device provided in this embodiment has an adjustment module that can make a prediction in advance when the pressure of the air conditioning system increases abnormally due to a sudden decrease in the indoor unit wind speed, and can lower the frequency of the compressor in advance, so that the compressor can be reduced to a stable operating frequency earlier, thereby avoiding the system from shutting down due to overvoltage protection or overtemperature protection as much as possible. This can not only improve the user experience, but also improve the stability of air conditioning operation and extend the life of the entire machine.

[0081] Specifically, the regulating module 303 may lower the ambient temperature frequency limit to the first frequency limit value and lower the frequency increase / decrease rate of the compressor to the first rate value when the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature.

[0082] The adjustment module 303 can also lower the ambient temperature limit frequency to a second limit frequency value and increase the frequency increase and decrease rate of the compressor to a second rate value when the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, wherein the first limit frequency value is greater than the second limit frequency value; it can also increase the speed loop control ratio of the compressor to a preset ratio value and increase the wind speed of the indoor unit to a preset wind speed value.

[0083] The regulating module 303 may also control the compressor to stop, the motor of the air conditioner outdoor unit to run at the maximum speed, and the indoor unit to stop when the exhaust temperature is greater than or equal to the over-limit temperature.

[0084] Specifically, the second acquisition module 302 can acquire the exhaust temperature of the air-conditioning compressor when the wind speed of the indoor unit drops to the wind speed of silent wind or sleep wind.

[0085] The variable frequency air conditioning system control device provided in this embodiment may also include a third acquisition module, which is used to obtain the operating frequency of the compressor; at this time, the second acquisition module can obtain the exhaust temperature of the air conditioning compressor when the operating frequency is the maximum frequency and the wind speed of the indoor unit decreases.

[0086] This embodiment also provides an air conditioner, which includes a processor and a storage device; the storage device stores a computer program, and the computer program executes the above method when executed by the processor.

[0087] This embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0088] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the control device through a computer, and the program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments, wherein the storage medium may be a memory, a disk, an optical disk, etc.

[0089] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0090] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprise" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0091] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A variable frequency air conditioning system control method, characterized in that: include: Get the wind speed of the air conditioner indoor unit; When the wind speed of the indoor unit decreases, obtaining the exhaust temperature of the air conditioning compressor; If the exhaust temperature is greater than or equal to the warning temperature, the ambient temperature frequency limit of the compressor is lowered; this step includes: if the exhaust temperature is greater than or equal to the warning temperature and less than the overload temperature, the ambient temperature frequency limit is lowered to a first frequency limit value, and the frequency increase and decrease rate of the compressor is lowered to a first rate value; If the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, the ambient temperature frequency limit is lowered to a second frequency limit value, and the frequency increase and decrease rate of the compressor is increased to a second rate value, and the first frequency limit value is greater than the second frequency limit value.

2. The variable frequency air conditioning system control method according to claim 1, characterized in that: The method further comprises: If the exhaust temperature is greater than or equal to the overload temperature and less than the overlimit temperature, the speed loop control ratio of the compressor is increased to a preset ratio value.

3. The variable frequency air conditioning system control method according to claim 1, characterized in that: The method further comprises: If the exhaust temperature is greater than or equal to the overload temperature and less than the over-limit temperature, the wind speed of the indoor unit is increased to a preset wind speed value.

4. The variable frequency air conditioning system control method according to any one of claims 1 to 3, characterized in that: The method further comprises: If the exhaust temperature is greater than or equal to the over-limit temperature, the compressor is controlled to stop, the motor of the air-conditioning outdoor unit is controlled to run at the maximum speed, and the indoor unit is controlled to stop.

5. The variable frequency air conditioning system control method according to any one of claims 1 to 3, characterized in that: The step of obtaining the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit decreases comprises: obtaining the exhaust temperature of the air conditioner compressor when the wind speed of the indoor unit decreases to the wind speed of silent wind or sleep wind; And / or, the method further includes: obtaining the operating frequency of the compressor, and if the operating frequency is the maximum frequency and the wind speed of the indoor unit decreases, executing the step of obtaining the exhaust temperature of the air-conditioning compressor.

6. The variable frequency air conditioning system control method according to any one of claims 1 to 3, characterized in that: The warning temperature is 90°C, the overload temperature is 95°C, and the over-limit temperature is 115°C; And / or, the first frequency limit value is 50 Hz, and the second frequency limit value is 40 Hz; And / or, the first rate value is 2s / Hz, and the second rate value is 0.5s / Hz.

7. A variable frequency air conditioning system control device, characterized in that: The variable frequency air conditioning system control method according to any one of claims 1 to 6, wherein the variable frequency air conditioning system control device comprises: A first acquisition module, used to acquire the wind speed of the indoor unit of the air conditioner; A second acquisition module, used to acquire the exhaust temperature of the air-conditioning compressor when the wind speed of the indoor unit decreases; The regulating module is used to lower the ambient temperature frequency limit of the compressor when the exhaust temperature is greater than or equal to the warning temperature.

8. A variable frequency air conditioner, characterized in that: include: processor and storage device; The storage device stores a computer program, and when the computer program is executed by the processor, the method according to any one of claims 1 to 6 is executed.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are executed.

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