A kind of air conditioner refrigerant leakage detection method and air conditioner using the method

Abstract

The invention discloses a method for detecting refrigerant leakage of an air conditioner, comprising: acquiring the average value of the coil temperature of the generator and the average temperature of the windward surface of the evaporator; initially judging whether refrigerant leakage occurs; obtaining a second difference; Determine whether the first difference belongs to the first temperature interval or the second temperature interval according to the change of the value; judge whether the air conditioner has refrigerant leakage according to the percentage change of the refrigerant mass flow rate in the air conditioning system; judge whether the first difference is in the second temperature interval Whether the duration is greater than the second preset time, and whether the second difference is greater than or equal to the third preset temperature difference; according to the actual operating power of the compressor and the theoretical operating power of the air conditioner, the amount of refrigerant leakage is calculated, according to The amount of refrigerant leakage determines the operating intensity and operating time of the indoor fan motor. The beneficial effects of the present invention are: (1) the air conditioner has a higher accuracy rate of judging refrigerant leakage; (2) effectively recovers refrigerant when it is judged that refrigerant leakage occurs.

Description

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

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

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