Air conditioning refrigerant detection method and device

A technology for refrigerant detection and air conditioning, which is applied in the direction of heating, space heating and ventilation, and control input involving air characteristics. To achieve the effect of improving reliability
CN105674507BActive Publication Date: 2018-08-14GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
Publication Date
2018-08-14

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Abstract

The invention discloses a method for detecting refrigerants of an air conditioner. The method comprises the steps of judging whether a compressor is started when the air conditioner carries out refrigeration or dehumidification; when the compressor is started, after the compressor is continuously operated for the first preset time, obtaining the air inlet temperature of the air conditioner and the temperature of an indoor heat exchanger, calculating the difference value between the air inlet temperature of the air conditioner and the temperature of the indoor heat exchanger and setting the difference value as the first temperature difference; when the first temperature difference is smaller than the first preset value, after the compressor is continuously operated for the second preset time, obtaining the air inlet temperature of the air conditioner and the temperature of the indoor heat exchanger, calculating the difference value between the air inlet temperature of the air conditioner and the temperature of the indoor heat exchanger and setting the difference value as the second temperature difference; when the second temperature difference is smaller than the second preset value, judging whether the absolute value of the difference value between the first temperature difference and the second temperature difference is smaller than the third preset value; if the absolute value of the difference value between the first temperature difference and the second temperature difference is smaller than the third preset value, judging that the refrigerant malfunction exists. The invention further discloses a device for detecting the refrigerants of the air conditioner. According to the method and device, leakage detection of the refrigerants is realized, and the operation reliability of the air conditioner is improved.
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Description

technical field

[0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner refrigerant detection method and device. Background technique

[0002] The existing air-conditioning and refrigeration system includes a compressor, an outdoor heat exchanger, a throttling device, an indoor heat exchanger and a certain amount of refrigerant pre-charged. In the case of no leakage of refrigerant, the air conditioning system can operate normally. If the installation of the air conditioner is not standardized or the refrigerant in the system pipeline leaks slowly for a long time due to vibration and other reasons during later operation, the cooling effect of the air conditioner system will deteriorate. When the refrigerant leakage is serious, the compressor is often burned, which affects the reliability of the air conditioner operation. Contents of the invention

[0003] The main purpose of the present invention is to provide a method ...

Claims

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