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Air conditioner and frequency control method and device thereof

A technology of frequency control and air conditioner, which is applied in control input related to air characteristics, space heating and ventilation control input, refrigeration and liquefaction, etc. Sexuality reduction, avoiding the effect of loud noise

Active Publication Date: 2017-03-29
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a frequency control method and control device for an air conditioner, which can solve the problems of large temperature fluctuations and frequent compressor frequency fluctuations caused by inappropriate frequency hopping band processing in the prior art frequency control.

Method used

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  • Air conditioner and frequency control method and device thereof
  • Air conditioner and frequency control method and device thereof

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Experimental program
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Embodiment approach

[0061] In both step 12 and step 13, it is necessary to determine whether the operating frequency of the compressor adjusted according to the current compressor frequency variation is within the frequency hopping band. As a preferred implementation, the following process can be used to judge:

[0062] Obtain the current compressor operating frequency, and obtain the adjusted compressor operating frequency according to the current compressor frequency change and the current compressor operating frequency; then, compare the adjusted compressor operating frequency with the frequency hopping band; if the adjusted compressor If the operating frequency of the compressor is within the frequency hopping band, it is determined that the adjusted operating frequency of the compressor is within the frequency hopping band, otherwise, it is not within the frequency hopping band.

[0063] The specific method for obtaining the adjusted operating frequency of the compressor according to the cur...

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Abstract

The invention discloses an air conditioner as well as a frequency control method and device thereof. The method comprises the following steps of obtaining frequency variation of an existing compressor; determining target operation frequency according to the relationship of the temperature difference of the current room temperature and a set room temperature and a first set threshold value if frequency variation of the existing compressor is greater than zero and when operation frequency of the compressor regulated according to the frequency variation of the existing compressor is within a frequency hopping band range; determining target operation frequency according to the relationship of temperature difference of the current room temperature and the set room temperature and a second set threshold value if the frequency variation of the existing compressor is smaller than zero and when operation frequency of the compressor regulated according to the frequency variation of the existing compressor is within the frequency hopping band range; and controlling the compressor to operate according to the target operation frequency. The frequency control method can be applied to solve the problems such as great temperature fluctuation, frequent compressor lifting and the like caused by improper frequency hopping band processing in frequency control in the prior art.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, in particular relates to an air conditioner, more specifically relates to an air conditioner and its frequency control method and control device. Background technique [0002] At present, many air conditioners use the PID frequency control method. This method is based on the difference between the indoor ambient temperature and the set room temperature for PID calculation, and outputs the compressor frequency to control the operation of the compressor, and gradually reduces the compression according to the difference. The machine frequency keeps the room temperature at the set room temperature. [0003] However, for the compressor of the air conditioner, there is often a large vibration at low frequency. If it is not controlled, long-term operation will greatly shorten the service life of the pipeline. Therefore, the control of the air conditioner is equipped with frequency hopping cont...

Claims

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Application Information

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IPC IPC(8): F24F11/00F24F13/24F25B49/02
CPCF24F11/30F24F11/62F24F11/64F24F11/70F24F13/24F24F2013/247F24F2110/00F24F2110/10F25B49/022F25B2500/12F25B2600/02
Inventor 徐贝贝刘聚科程永甫宋世芳
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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