Method and device for controlling automatic wind speed of fan in air conditioner, and air conditioner

Abstract

The present invention discloses a method for automatically controlling the fan speed in an air conditioner, aiming to address the problem of existing air conditioners automatically controlling air supply based solely on changes in ambient temperature. The method comprises: S1, collecting the current indoor ambient temperature, set temperature, and compressor operating frequency; S2, determining an initial wind speed based on the difference between the indoor ambient temperature and the set temperature, and controlling the indoor fan to operate at the initial wind speed for a first preset duration; S3, dynamically adjusting the fan speed to a target speed based on the indoor ambient temperature, set temperature, and compressor operating frequency; S4, operating at the target speed for a second preset duration. This technical solution improves the comfort of automatic air supply in air conditioners, enhances the intelligence level of air conditioners, and improves the user experience.

Description

Technical Field

[0001] The present invention relates to the field of air-conditioning control, and more particularly to a method and device for controlling the automatic wind speed of a fan in an air-conditioning unit, and an air-conditioner. Background Art

[0002] Nowadays, people's demands for comfort are getting higher and higher, and the demand for intelligent air conditioners is also getting higher and higher. The automatic wind speed of the fan of the current air conditioner indoor unit is mostly set based on the changes in ambient temperature. This control method needs to be further improved in terms of comfort. Summary of the Invention

[0003] This invention primarily relates to a method and device for controlling the automatic wind speed of an air conditioner's internal fan, and to an air conditioner. This method addresses the issue of automatic air delivery comfort by incorporating compressor frequency into the system, combining changes in variables such as ambient temperature and setpoint temperature to comprehensively set a reasonable internal fan speed.

[0004] According to a first aspect of the present invention, a method for controlling the automatic wind speed of a fan in an air conditioner is provided, the method comprising:

[0005] S1, collects the current indoor ambient temperature, set temperature, and compressor operating frequency;

[0006] S2, determining an initial wind speed based on the difference between the indoor ambient temperature and the set temperature, and controlling the indoor fan to operate at the initial wind speed for a first preset time;

[0007] S3, dynamically adjusting the speed of the air conditioner fan to a target speed according to the indoor ambient temperature, the set temperature, and the operating frequency of the compressor;

[0008] S4, running at the target speed for a second preset time period.

[0009] Optionally, the step S3 of dynamically adjusting the speed of the air conditioner fan to a target speed according to the indoor ambient temperature, the set temperature, and the operating frequency of the compressor includes:

[0010] Dividing the preset frequency of the compressor into multiple intervals from low to high;

[0011] Dividing the relationship between the indoor ambient temperature and the set temperature into multiple situations, each situation corresponding to the multiple intervals;

[0012] The rotation speed of the fan in the air conditioner is determined according to the correspondence between the multiple situations and the multiple intervals.

[0013] Optionally, determining the rotation speed of the fan in the air conditioner according to the correspondence between the multiple situations and the multiple intervals includes:

[0014] When the compressor frequency is within the preset lowest frequency range, the speed of the fan in the air conditioner is controlled to run at the maximum value of the current speed range;

[0015] When the compressor frequency is within the preset maximum frequency range, the speed of the fan in the air conditioner is controlled to run at the minimum value of the current speed range;

[0016] When the compressor frequency is in the middle frequency range, the speed of the air conditioner fan is controlled to run according to a preset function. The preset function V 目标转速 =f(P 压缩机频率 ).

[0017] Optionally, the preset function V 目标转速 =f(P 压缩机频率 )=N1+N2 / P 压缩机频率 , where N1 and N2 are constants, and N1 and N2 are obtained by fitting the laboratory recorded data.

[0018] Optionally, determining the initial wind speed according to the difference between the ambient temperature and the set temperature includes:

[0019] When T 内环 ≤T 设 +T 补 -deltaT, the internal fan speed is in the first speed range;

[0020] When T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When the internal fan speed is in the second speed range;

[0021] When T 内环 ≥T 设 +T 补 When the internal fan speed is in the third speed range;

[0022] Wherein, Tinner is the ambient temperature, T is set as the set temperature, Tcompensation is the compensation temperature, and different compensation temperatures can be obtained depending on the air conditioner model. DeltaT is the preset temperature deviation value. The minimum value of the first speed range is greater than the maximum value of the second speed range, and the minimum value of the second speed range is greater than the maximum value of the third speed range.

[0023] Optionally, dynamically adjusting the speed of the air conditioner fan to a target speed according to the ambient temperature, the set temperature, and the operating frequency of the compressor includes:

[0024] When T 内环≤T 设 +T 补 -deltaT, adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor;

[0025] When T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When the frequency P of the compressor is adjusted, the speed of the fan in the air conditioner is adjusted;

[0026] When T 内环 ≥T 设 +T 补 When the frequency P of the compressor is used, the speed of the fan in the air conditioner is adjusted.

[0027] Optional, when T 内环 ≤T 设 +T 补 When deltaT is set, the speed of the fan in the air conditioner is adjusted according to the frequency P of the compressor, including:

[0028] When P < the minimum frequency threshold Fmin, the speed of the fan in the air conditioner is the maximum value of the first speed range;

[0029] When the minimum frequency threshold Fmin≤P≤the maximum frequency threshold Fmax, the speed of the fan in the air conditioner is V 目标转速 =(N1+N2 / P), where N1 and N2 are constants;

[0030] When P>the maximum frequency threshold Fmax, the speed of the fan in the air conditioner is the minimum value of the first speed range.

[0031] Optionally, when T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When , adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor includes:

[0032] When P < the minimum frequency threshold Fmin, the speed of the fan in the air conditioner is the maximum value of the second speed range;

[0033] When the minimum frequency threshold Fmin≤P≤the maximum frequency threshold Fmax, the speed of the fan in the air conditioner is V 目标转速 =(N1+N2 / P), where N1 and N2 are constants;

[0034] When P>the maximum frequency threshold Fmax, the speed of the fan in the air conditioner is the minimum value of the second speed range.

[0035] Optionally, when T 内环 ≥T 设 +T 补 When , adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor includes:

[0036] When P < the minimum frequency threshold Fmin, the speed of the fan in the air conditioner is the maximum value of the third speed range;

[0037] When the lowest frequency threshold Fmin≤P≤the highest frequency threshold Fmax, the speed V of the fan in the air conditioner 目标转速 =(N1+N2 / P), where N1 and N2 are constants;

[0038] When P>the maximum frequency threshold Fmax, the rotational speed of the fan in the air conditioner is the minimum value of the third rotational speed range.

[0039] Optionally, in the process of dynamically adjusting the rotational speed of the air conditioner fan to the target rotational speed, the step size of the rotational speed of the air conditioner fan adjusted per unit time is a preset adjustment rate value.

[0040] According to a second aspect of the present invention, a device for controlling the automatic wind speed of a fan in an air conditioner is provided, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the method described in the first aspect.

[0041] According to a third aspect of the present invention, there is provided an air conditioner, which adopts the method described in any one of the first aspects, or includes the control device described in the second aspect.

[0042] Through the technical solution of the present invention, the control of the fan in the air conditioner is made more reasonable and more intelligent, the intelligence level of the air conditioner is improved, and the user experience is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings. The drawings described below are only some embodiments disclosed in the present invention. It is obvious to a person skilled in the art that other drawings can be derived from these drawings without inventive effort.

[0044] Figure 1 The flowchart of the control method according to the embodiment of the present invention is exemplarily shown. DETAILED DESCRIPTION

[0045] As used herein, the words "first", "second", etc. may be used to describe elements in exemplary embodiments of the present invention. These words are only used to distinguish one element from another, and the inherent characteristics or order of the corresponding elements are not limited by the words. Unless otherwise defined, all terms used herein (including technical or scientific terms) have the same meaning as those commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries are interpreted as having the same meaning as the contextual meaning in the relevant technical field, and are not interpreted as having ideal or overly formal meanings, unless explicitly defined as having such meanings in the present invention.

[0046] Those skilled in the art will understand that the apparatus and methods of the present invention described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments, and that the scope of the present invention is defined solely by the claims. Features illustrated or described in conjunction with one exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are within the scope of the present invention.

[0047] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the accompanying drawings, detailed descriptions of related known functions or configurations are omitted to avoid unnecessarily obscuring the technical key points of the present invention. Throughout the description, the same reference numerals will always refer to the same circuits, modules, or units, and for the sake of brevity, repeated descriptions of the same circuits, modules, or units will be omitted.

[0048] Furthermore, it should be understood that one or more of the following methods or aspects thereof can be performed by at least one control system, control unit, or controller. The terms "control unit," "controller," "control module," or "main control module" can refer to a hardware device including a memory and a processor, and the term "air conditioner" can refer to a refrigeration device similar to a refrigeration device. The memory or computer-readable storage medium is configured to store program instructions, and the processor is specifically configured to execute the program instructions to perform one or more processes described further below. Furthermore, it should be understood that, as will be appreciated by one of ordinary skill in the art, the following methods can be performed by including a processor in combination with one or more other components.

[0049] Currently, most air conditioners on the market have their interior fan's automatic speed set based on ambient temperature. This setting compromises user comfort. To address this issue, a method and device for controlling the automatic speed of an air conditioner's interior fan, capable of reasonably setting the fan's speed, and the associated air conditioner are proposed.

[0050] Example 1

[0051] According to one or more embodiments of the present invention, this embodiment provides a method for controlling the automatic wind speed of a fan in an air conditioner, such as Figure 1 The flow chart of the method for controlling the automatic wind speed of the fan in the air conditioner is shown. The control method comprises four steps: S1, S2, S3, and S4, wherein:

[0052] S1, collects the current indoor ambient temperature, set temperature, and compressor operating frequency.

[0053] S2, determining an initial wind speed according to the difference between the indoor ambient temperature and the set temperature, and controlling the indoor fan to operate at the initial wind speed for a first preset time.

[0054] S3, dynamically adjusting the speed of the air conditioner fan to a target speed according to the indoor ambient temperature, the set temperature and the operating frequency of the compressor.

[0055] S4, running at the target speed for a second preset time period.

[0056] Specifically,

[0057] Step S1: Collect the current indoor ambient temperature T 内环 , set temperature T 设 , the operating frequency P of the compressor.

[0058] The air conditioner indoor unit collects the current indoor ambient temperature, and retrieves the user's most recent set temperature and the current compressor operating frequency, collecting these three data for subsequent adjustment and control algorithms.

[0059] Step S2: determining an initial wind speed according to the difference between the indoor ambient temperature and the set temperature, and controlling the indoor fan to run at the initial wind speed for a first preset time.

[0060] According to the indoor ambient temperature T collected in step S1 内环 and set temperature T 设 The difference between the two is used to determine the initial wind speed when the indoor fan starts. Ensure that the indoor fan can start at a reasonable speed under the current environment. 内环 and set temperature T 设 , compensation temperature T 补 The relationship between the temperature deviation value deltaT is divided into the following three situations S21, S22, and S23 to control the internal fan speed.

[0061] S21, when T 内环 ≤T 设 +T 补-deltaT, the speed of the inner fan is in the first speed range; that is, when the current inner ring temperature is much lower than the set temperature, the inner fan is controlled to run at a faster speed, thereby quickly increasing the inner ring temperature.

[0062] S22, when T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 , the internal fan speed is in the second speed range; that is, when the current inner ring temperature is close to the set temperature, the internal fan speed is controlled to run at a moderate speed to maintain the current state of the internal fan.

[0063] S23, when T 内环 ≥T 设 +T 补 , the inner fan speed is in the third speed range; that is, when the current inner ring temperature is much higher than the set temperature, the inner fan speed is controlled to run at a low speed, thereby reducing the current inner ring temperature.

[0064] Among them, the T 内环 is the ambient temperature, the T 设 is the set temperature, the T 补 The compensation temperature varies depending on the air conditioner model. DeltaT is a preset temperature deviation. The minimum value of the first speed range is greater than the maximum value of the second speed range, and the minimum value of the second speed range is greater than the maximum value of the third speed range. In other words, when the inner ring temperature is relatively low, the inner fan speed is controlled to be faster, and when the inner ring temperature is relatively high, the inner fan speed is controlled to be slower.

[0065] Step S3, dynamically adjusting the speed of the fan in the air conditioner to a target speed according to the indoor ambient temperature, the set temperature and the operating frequency of the compressor.

[0066] This stage is the dynamic adjustment stage. The speed of the indoor fan is dynamically adjusted according to the outdoor ambient temperature, the set temperature and the operating frequency of the compressor. The adjustment method includes the following three steps S31, S32 and S33.

[0067] S31, dividing the preset frequency of the compressor into multiple intervals from low to high.

[0068] According to the operating frequency P of the compressor, the preset frequency minimum threshold F min and the maximum frequency threshold F max All operating frequency values ​​are divided into three intervals. That is, in the first interval, P <F min ; The second interval, F min ≤P≤F max ; The third interval, P>Fmax , preferably, the minimum frequency threshold F min =30Hz, the highest frequency threshold F max =70Hz.

[0069] S32, dividing the relationship between the indoor ambient temperature and the set temperature into multiple situations, each situation corresponding to the multiple intervals, as follows:

[0070] S321, when T 内环 ≤T 设 +T 补 -deltaT, the speed of the fan in the air conditioner is adjusted according to the frequency P of the compressor; according to the different operating frequencies of the compressor, it can be divided into the following three situations: S3211, S3212, and S3213:

[0071] S3211: When the compressor operating frequency P is in the first interval, the speed of the fan in the air conditioner is the maximum value of the first speed range.

[0072] S3212, when the compressor operating frequency P is in the second interval, the speed of the fan in the air conditioner is V 目标转速 =(N1+N2 / P), where N1 and N2 are both constants. That is, when the compressor operating frequency P is within this range, the current target speed of the air-conditioning fan is inversely proportional to the compressor operating frequency P. The higher the compressor operating frequency P, the lower the target speed of the air-conditioning fan. Conversely, the lower the compressor operating frequency P, the higher the target speed of the air-conditioning fan.

[0073] S3213: When the compressor operating frequency P is in the third interval, the speed of the fan in the air conditioner is the minimum value of the first speed range.

[0074] S322, when T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When the fan speed in the air conditioner is adjusted according to the frequency P of the compressor, the operating frequency of the compressor can be divided into the following three situations: S3221, S3222, and S3223:

[0075] S3221, when the compressor operating frequency P is in the first interval, the speed of the fan in the air conditioner is the maximum value of the second speed range;

[0076] S3222: When the compressor operating frequency P is in the second interval, the speed of the fan in the air conditioner is V 目标转速=(N1+N2 / P), where N1 and N2 are both constants. That is, when the compressor operating frequency P is within this range, the current target speed of the air-conditioning fan is inversely proportional to the compressor operating frequency P. The higher the compressor operating frequency P, the lower the target speed of the air-conditioning fan. Conversely, the lower the compressor operating frequency P, the higher the target speed of the air-conditioning fan.

[0077] S3223: When the compressor operating frequency P is in the third interval, the speed of the fan in the air conditioner is the minimum value of the second speed range.

[0078] S323, when T 内环 ≥T 设 +T 补 When the fan speed in the air conditioner is adjusted according to the compressor frequency P. According to the different operating frequencies of the compressor, there are three cases: S3231, S3232, and S3233:

[0079] S3231, when the compressor operating frequency P is in the first interval, the speed of the fan in the air conditioner is the maximum value of the third speed range;

[0080] S3232: When the compressor operating frequency P is in the second interval, the speed of the fan in the air conditioner V 目标转速 =(N1+N2 / P), where N1 and N2 are both constants. That is, when the compressor operating frequency P is within this range, the current target speed of the air-conditioning fan is inversely proportional to the compressor operating frequency P. The higher the compressor operating frequency P, the lower the target speed of the air-conditioning fan. Conversely, the lower the compressor operating frequency P, the higher the target speed of the air-conditioning fan.

[0081] S3233: When the compressor operating frequency P is in the third interval, the speed of the fan in the air conditioner is the minimum value of the third speed range.

[0082] S33: Determine the rotation speed of the fan in the air conditioner according to the correspondence between the multiple situations and the multiple intervals.

[0083] S331, when the compressor frequency is within the preset lowest frequency range, controlling the speed of the fan in the air conditioner to operate at the maximum speed of the current speed range;

[0084] S332, when the compressor frequency is within the preset maximum frequency range, controlling the speed of the fan in the air conditioner to operate at the minimum value of the current speed range;

[0085] S333: When the compressor frequency is within the middle frequency range, the speed of the fan in the air conditioner is controlled to run according to a preset function. The preset function V 目标转速 =f(P). That is, when the compressor frequency P is in the second interval, the speed of the internal fan is determined according to this preset function.

[0086] Preset function V 目标转速 =f(P)=N1+N2 / P, where N1 and N2 are constants, and a large number of V 目标转速 and P are fitted, preferably, obtained by linear regression fitting.

[0087] During this phase of dynamically adjusting the air conditioner's internal fan speed to the target speed, the speed of the air conditioner's internal fan is adjusted at a preset adjustment rate per unit time. That is, during automatic wind speed switching, the internal fan speed is gradually adjusted at the preset adjustment rate until the target wind speed is reached. Preferably, the preset adjustment rate is 10 rpm / 5 seconds.

[0088] Specifically, the following table provides an example of dynamically adjusting the internal fan speed based on the ambient temperature, the set temperature, and the operating frequency of the compressor, taking deltaT = 2°C as an example.

[0089]

[0090] Step S4: running at the target speed for a second preset time.

[0091] This stage is the stable fixed speed stage. During this stage, the fan operates at the determined target speed for a second preset duration, and then repeats the dynamic adjustment of step S3. Preferably, the second preset duration is 30 minutes. The main purpose of this stage is to avoid frequent wind speed adjustments that may cause noise problems. After this stage is completed, step S3 is repeated.

[0092] Through the above technical solution, the variables such as the ambient temperature of the air conditioner's indoor unit, the set temperature and the compressor frequency are comprehensively considered to set the optimal speed of the internal fan under different temperature conditions and different compressor frequencies. When the air conditioner is set to automatic air supply mode, users can get a more comfortable and smarter user experience.

[0093] Example 2

[0094] According to one or more embodiments of the present invention, this embodiment provides a device for controlling the automatic wind speed of a fan in an air conditioner, which includes a memory and a processor. The memory stores program instructions for implementing any function of Example 1, and the processor is used to execute the program instructions.

[0095] Example 3

[0096] According to one or more embodiments of the present invention, this embodiment provides an air conditioner that adopts any one of the functions of Example 1, or includes the control device described in Example 2, or has the non-transitory computer-readable storage medium described in Example 3.

[0097] In summary, it will be readily understood by those skilled in the art that, provided that no conflict exists, the aforementioned advantageous methods may be freely combined and superimposed. The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention may be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for controlling the automatic wind speed of a fan in an air conditioner, characterized in that: include: S1. Collect the current indoor ambient temperature, set temperature, and compressor operating frequency; S2. determining an initial wind speed based on the difference between the indoor ambient temperature and the set temperature, and controlling the indoor fan to operate at the initial wind speed for a first preset time; S3, dynamically adjusting the speed of the air conditioner fan to a target speed based on the indoor ambient temperature, the set temperature, and the operating frequency of the compressor; S4, controlling the air conditioner internal fan to operate at the target speed for a second preset time; in: Determining the initial wind speed according to the difference between the ambient temperature and the set temperature includes: When T 内环 ≤T 设 +T 补 -deltaT, the internal fan speed is in the first speed range; When T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When the internal fan speed is in the second speed range; When T 内环 ≥T 设 +T 补 When the internal fan speed is in the third speed range; Among them, the T 内环 is the ambient temperature, the T 设 is the set temperature, the T 补 To compensate for the temperature, the compensation temperature that can be obtained depends on different air-conditioning models. The deltaT is a preset temperature deviation value. The minimum value of the first speed range is greater than the maximum value of the second speed range, and the minimum value of the second speed range is greater than the maximum value of the third speed range.

2. The method according to claim 1, characterized in that The step S3 of dynamically adjusting the speed of the air conditioner fan to the target speed according to the indoor ambient temperature, the set temperature, and the operating frequency of the compressor includes: Dividing the preset frequency of the compressor into multiple intervals from low to high; Dividing the relationship between the indoor ambient temperature and the set temperature into multiple situations, each situation corresponding to the multiple intervals; The rotation speed of the fan in the air conditioner is determined according to the correspondence between the multiple situations and the multiple intervals.

3. The method according to claim 2, characterized in that Determining the rotation speed of the fan in the air conditioner according to the correspondence between the multiple situations and the multiple intervals includes: When the compressor frequency is within the preset lowest frequency range, the speed of the fan in the air conditioner is controlled to run at the maximum value of the current speed range; When the compressor frequency is within the preset maximum frequency range, the speed of the fan in the air conditioner is controlled to run at the minimum value of the current speed range; When the compressor frequency is in the middle frequency range, the speed of the air conditioner fan is controlled to run according to a preset function. The preset function V 目标转速 =f(P 压缩机频率 ).

4. The method according to claim 3, characterized in that The preset function V 目标转速 =f(P 压缩机频率 )=N1+N2 / P 压缩机频率 , where N1 and N2 are constants, and N1 and N2 are obtained by fitting the laboratory recorded data.

5. The method according to any one of claims 1 to 4, characterized in that The dynamically adjusting the speed of the air conditioner fan to the target speed according to the ambient temperature, the set temperature, and the operating frequency of the compressor includes: When T 内环 ≤T 设 +T 补 -deltaT, adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor; When T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When the frequency P of the compressor is adjusted, the speed of the fan in the air conditioner is adjusted; When T 内环 ≥T 设 +T 补 When the frequency P of the compressor is used, the speed of the fan in the air conditioner is adjusted.

6. The method according to claim 5, characterized in that When T 内环 ≤T 设 +T 补 When deltaT is set, the speed of the fan in the air conditioner is adjusted according to the frequency P of the compressor, including: When P < the lowest frequency threshold F min , the speed of the fan in the air conditioner is the maximum value of the first speed range; When the frequency minimum threshold F min ≤P≤Frequency Maximum Threshold F max The speed of the fan in the air conditioner is V 目标转速 =(N1+N2 / P), where N1 and N2 are constants; When P> the maximum frequency threshold F max , the speed of the fan in the air conditioner is the minimum value of the first speed range.

7. The method according to claim 6, characterized in that When T 设 +T 补 -deltaT<T 内环 <T 设 +T 补 When , adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor includes: When P < the lowest frequency threshold F min , the speed of the fan in the air conditioner is the maximum value of the second speed range; When the frequency minimum threshold F min ≤P≤Frequency Maximum Threshold F max The speed of the fan in the air conditioner is V 目标转速 =(N1+N2 / P), where N1 and N2 are constants; When P> the maximum frequency threshold F max , the speed of the fan in the air conditioner is the minimum value of the second speed range.

8. The method according to claim 7, characterized in that When T 内环 ≥T 设 +T 补 When , adjusting the speed of the fan in the air conditioner according to the frequency P of the compressor includes: When P < the lowest frequency threshold F min , the speed of the fan in the air conditioner is the maximum value of the third speed range; When the frequency minimum threshold F min ≤P≤Frequency Maximum Threshold F max , the speed of the fan in the air conditioner V 目标转速 =(N1+N2 / P), where N1 and N2 are constants; When P> the maximum frequency threshold F max , the speed of the fan in the air conditioner is the minimum value of the third speed range.

9. The method according to claim 1, characterized in that During the process of dynamically adjusting the rotation speed of the air conditioner fan to the target rotation speed, the speed adjustment step of the air conditioner fan within a unit time is a preset adjustment rate value.

10. A device for controlling the automatic wind speed of a fan in an air conditioner, comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, wherein when the one or more processors execute the program instructions, the one or more processors are used to implement the method according to claims 1-9.

11. An air conditioner, comprising the method according to any one of claims 1 to 9, or comprising the control device according to claim 10.

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