Refrigerant leakage detection method for air conditioner and air conditioner using method

Abstract

The invention discloses a refrigerant leakage detection method for an air conditioner. The method comprises the following steps of determining a theoretical working current value of the air conditioner and starting the air conditioner according to the theoretical working current value; calculating the actual mass flow of a refrigerant in the air conditioner, comparing the difference between the indoor unit coil temperature and the current second indoor environment temperature with the cooling effect, and judging whether the refrigerant leakage suspicion exists; calculating a first proportion of the refrigerant leakage fault of the air conditioner by adopting a support vector machine classifier; judging whether the residual quantity of the refrigerant is less than a preset residual quantityvalue; judging whether the actual power is less than the theoretical power; judging whether the temperature change effect of the air conditioner is reduced, and if so, judging that the refrigerant leakage occurs; and determining a specific position of the refrigerant leakage in a refrigerant pipeline. The method and the air conditioner have the beneficial effects that (1) the air conditioner hashigher judging accuracy rate on the refrigerant leakage, and (2) the position of the leakage point can be effectively determined.

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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