Air conditioner control method
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner control method.
Background
The existing air conditioner compressor starts refrigeration or heating to operate under different wind gears under the condition of same frequency, and the temperature change of an inner disc on an evaporator is changed greatly due to the fact that the heat exchange difference of an indoor evaporator is large. When the compressor is in refrigeration operation, under the same compressor frequency condition, the temperature of the inner disc is much higher than that of the low wind in high wind.
The target frequency of the compressor of the air conditioner is generally controlled and determined according to a specific inner plate temperature. Therefore, when the air conditioner controls the target frequency according to the inner disc, the temperature of the inner disc is higher (lower) when high wind refrigerates (heats) and the temperature of the inner disc is lower (higher) when low wind refrigerates (heats), the target frequency of the compressor is higher when the air conditioner reaches a certain specific same T inner disc temperature when high wind and low wind, and the target frequency of the compressor is extremely low when the low wind. Generally, the low wind target frequency may be only half of the high wind target frequency, so that the capacity of the air conditioner is greatly attenuated when the air conditioner runs in low wind, and the user experience is poor. The output of the high wind and low wind compressors of the fixed frequency air conditioner is consistent, which is equivalent to that the frequency of different wind gears of the frequency converter is the same, and the attenuation of the low wind energy is smaller.
Disclosure of Invention
In order to solve the above problem, an aspect of the embodiments of the present invention provides an air conditioner control method, including calculating a target frequency of a compressor, and controlling the compressor to operate based on the target frequency, wherein the target frequency is corrected based on an indoor fan wind speed, and a correction amplitude is proportional to the wind speed. Therefore, on the basis of controlling the target inner disk temperature of the compressor, the wind speed compensation control is added, when the air conditioner is set to be in low wind operation, the target frequency of the compressor is not too low compared with the target frequency of the compressor in high wind, the capacity attenuation is not too large, and therefore the comfort and the user experience of the air conditioner are improved.
Further, the target frequency is calculated by the following formula:
Fcalculating a target frequency=FLast time calculated target frequency+FCurrent target frequency×△FTarget frequency correction factor
Wherein, FCalculating a target frequencyFor a target operating frequency calculated from the control function calculation,
Flast time calculated target frequencyThe target frequency calculated for the last cycle,
Fcurrent target frequencyFor the current actual operating frequency of the frequency,
△Ftarget correction frequency coefficientIs a correction factor.
Further, the correction coefficient is configured to:
△Ftarget frequency correction factor=(-△T+1)/100,
Wherein, the delta T is the temperature difference of the inner disc during refrigeration or heating.
Further, when the air conditioner operates in a refrigerating mode, the calculation mode of the delta T is as follows:
△Ttemperature difference of refrigeration inner disc=TTarget inner disc temperature of refrigeration-(TActual inner disc temperature-t),
When the air conditioner is in hot operation, △ T is calculated in the mode of △ THeating inner plate temperature difference=(TActual inner disc temperature+t)-TThe temperature of the heating target inner disc is controlled,
wherein, TTarget inner disc temperature of refrigerationTarget inner disc temperature detected by sensor on evaporator when air conditioner operates according to refrigeration,
THeating target inner plate temperatureThe temperature of the target inner disc detected by a sensor on the evaporator when the air conditioner operates according to heating,
and t is the rotating speed compensation value of the indoor fan.
Further, the indoor fan rotating speed compensation value is determined according to the difference value of the inner disc temperature sensors when the compressors run at different indoor fan wind speeds under the same frequency condition.
Further, the corresponding relationship between the indoor fan rotation speed compensation value and the indoor fan wind speed is that when the wind speed is low wind, the range of t is [2,4], when the wind speed is medium wind, the range of t is [1,2], and when the wind speed is high wind, the range of t is [0,1 ].
Further, said TTarget inner disc temperature of refrigerationPreferably 10 ℃, said THeating target inner plate temperaturePreferably 47 deg.c.
Further, when the wind speed is low, t is 4; when the wind speed is medium, t is 2; when the wind speed is high, t is 1; when the wind speed is a strong wind speed, t is 0.
According to another aspect of the embodiment of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the aforementioned air conditioner control method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic diagram of an air conditioner control method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In a conventional air conditioning control method, a target frequency of a compressor is controlled based on a target cooling inner panel temperature and a target heating inner panel temperature specified by an evaporator during cooling and heating. The target inner disc temperature is controlled in such a way that when the compressor is operated in a refrigerating (heating) mode, the frequency of the compressor is gradually increased based on a specific refrigerating target inner disc temperature (heating target inner disc temperature), and when the inner disc temperature is higher than or lower than the target inner disc temperature, the frequency of the compressor is adjusted, and the compressor is operated at the target frequency according to the frequency reaching the target inner disc temperature. However, the target frequency of the air conditioner is high when the air conditioner operates in high wind, but the target compressor frequency of the air conditioner is too low when the air conditioner operates in medium and low wind, so that the output capacity of the air conditioner is extremely low, and the user experience and the comfort of the air conditioner are influenced.
Based on the above, the invention provides an air conditioner control method, which increases the wind speed compensation control on the basis of the target frequency of a compressor according to the target inner disc temperature control, so that when the air conditioner sets low wind to operate, the target frequency of the compressor is not too low compared with that of high wind, and the capacity attenuation is not too large, thereby improving the comfort of the air conditioner and the user experience.
Specifically, as shown in fig. 1, when the air conditioner is started, the compressor first controls to operate with the highest frequency Fmax at which the compressor can operate as a target frequency, and after a period of time, the compressor starts to perform adjustment operation according to the target frequency calculated by the target inner disc temperature. Here, the period of time may be about 5 minutes. The calculation formula of the target frequency is expressed as follows: fCalculating a target frequency=FLast time calculated target frequency+FCurrent target frequency×△FTarget frequency correction factor。
△FTarget frequency correction factorThe value is calculated in the manner of △ FTarget frequency correction factorThe frequency of the target compressor may be calculated every 30s (- △ T + 1)/100.
Wherein, FCalculating a target frequencyThe initial value is the maximum operable frequency of the compressor calculated according to the control function operationFrequency Fmax. Fmax is the highest compressor frequency that the air conditioner allows to operate. FLast time calculated target frequencyThe calculation period of the compressor frequency is 30S for the target frequency calculated for the previous period. FCurrent target frequencyCurrent target operating frequency at any time in the process of reaching the calculated target frequency, i.e., current actual operating frequency △ FTarget correction frequency coefficientThe temperature difference of the inner disc is adjusted continuously according to different temperature differences, so that the temperature of the inner disc can be exactly reached when the air conditioner operates according to the frequency of the target compressor, △ T is the temperature difference of the inner disc during refrigeration or heating.
When the air conditioner operates in a refrigerating mode, the calculation mode of △ T is △ TTemperature difference of refrigeration inner disc=TTarget inner disc temperature of refrigeration-(TActual inner disc temperature-t)。
When the air conditioner is in hot operation, △ T is calculated in the mode of △ THeating inner plate temperature difference=(TActual inner disc temperature+t)-THeating target inner plate temperature。
Wherein △ T is inner disc temperature difference during refrigeration or heating, and △ T is adopted during refrigeration operationTemperature difference of refrigeration inner disc△ T during heating operationHeating inner plate temperature differenceThe value is the difference between the actual inner disc temperature and the target inner disc temperature. T isTarget inner disc temperature of refrigerationFor the target inner disk temperature, preferably T, detected by a sensor on the evaporator when the air conditioner operates as a refrigeratorTarget inner disc temperature of refrigeration=10℃。THeating target inner plate temperatureFor the detection of a target inner disk temperature, preferably T, by a sensor on the evaporator during heating operation of the air conditionerHeating target inner plate temperature=47℃。
Wherein t is the compensation value of the rotating speed of the indoor fan and the unit is ℃. Because the temperature change of the inner disc of the rotating speed of the indoor fan set by a user is extremely large under the same indoor and outdoor environment temperature condition, a wind speed compensation value is set, so that the temperature of the inner disc obtained under the different rotating speed conditions of the fan is a proper value, the target frequency of the compressor is reasonably controlled, the calculation target frequency of the medium and low wind is indirectly improved, and the refrigerating and heating capacity during the operation of the medium and low wind is improved.
t is determined according to the difference value of the inner disc temperature when the compressor operates at the same frequency under the conditions of low wind, medium wind and high operation and the inner disc temperature sensor when the strong wind shield operates, t is 0 when the strong wind operates, generally, t is [2,4] when the compressor operates at the low wind, t is [1,2] when the compressor operates at the medium wind, t is [0,1] when the compressor operates at the high wind, and the optimal value of t when the compressor operates at different wind gears is as follows: when the wind speed is low, t is 4; when the wind speed is medium, t is 2; when the wind speed is high, t is 1; when the wind speed is a strong wind speed, t is 0.
Therefore, the influence of the change of the wind speed is introduced to correct in the calculation of the target frequency of the compressor, so that when the air conditioner is set to be in low wind operation, the target frequency of the compressor is not too low compared with that in high wind, the capacity attenuation is not too large, and the comfort and the user experience of the air conditioner are improved.
According to another aspect of the embodiment of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the aforementioned air conditioner control method.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.