Air conditioner refrigerant leakage detection method and air conditioner

Abstract

The invention discloses a refrigerant leakage detection method for an air conditioning system. The method includes the steps that whether the operating state of the system requires refrigerant leakagedetection or not is initially judged; whether the operating frequency of a compressor is higher than a first set frequency or not is judged; the current outdoor ambient temperature, current outdoor liquid pipe temperature, current indoor return air temperature and current indoor anti-freezing temperature of an air conditioner are acquired to judge whether the air conditioner fails in refrigeration or not; whether refrigerant leakage occurs or not is judged according to the detected current refrigerant concentration outside a drainage hole; the rotating speed of an exhaust fan of the air conditioner is adjusted, and whether the concentration of refrigerant is reduced to be lower than a second preset concentration value or not is judged; a solenoid valve trips, and the severity of refrigerant leakage is determined according to the counted number of tripping times of the solenoid valve; and the air conditioner is stopped to recover the refrigerant. The method has the advantages that (1)the refrigerant leakage judgment accuracy of the air conditioner is higher; and (2) leaked refrigerant gas is discharged in time to make the air conditioner safer.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner refrigerant leakage detection method and an air conditioner. Background technique [0002] With the improvement of people's living standards, the popularity of air conditioners is getting higher and higher. Facing the large-scale popularization of air conditioners, the maintenance of air conditioners has become correspondingly frequent. There are endless problems with various air conditioners on the market. For the refrigerant leakage problem of air conditioners, no reasonable solution has been found. Now there are various leakages in the market, such as welding leakage of the evaporator of the internal unit, leakage of the connecting pipe, leakage of the condenser of the external unit, and four-way valve pipe. Leaks caused by road breaks, etc., once a leak occurs, the user usually finds out and repairs it when the cooling and heating effect of the air condition...

AI Technical Summary

Problems solved by technology

However, the corresponding leak detection method has not been improved accordingly, that is, the method of one-time judgment on a single air-conditioning parameter should not be used for leak detection, but should be judged by comprehensively applying the parameters of various air-conditioning systems to avoid The misjudgment of air-conditioning refrigerant leakage caused the air-conditioning to repeatedly shut down for protection

Images