Method and device for judging fluorine deficiency of air-conditioning refrigerant

Abstract

The invention provides an air conditioner refrigerant fluorine deficiency judgment method and device. The method comprises the following steps: acquiring the inner-ring temperature and inner-tube temperature of an air conditioner after the air conditioner is started up and operates for a first preset time; acquiring the evaporation pressure of the air conditioner; and when the evaporation pressure is less than or equal to a refrigerant fluorine deficiency pressure judgment critical value and the difference between the inner-ring temperature and the inner-tube temperature is less than or equal to a first preset difference, controlling the air conditioner to get into a fluorine deficiency judgment mode. The method and the device solve the technical problem that refrigerant deficiency cannot be detected effectively in the prior art, achieve the purpose of effectively finding whether the air conditioner lacks fluorine, and are simple to realize.

Description

technical field [0001] The invention relates to the technical field of air-conditioning control, in particular to a method and a device for judging the lack of fluorine in an air-conditioning refrigerant. Background technique [0002] After the air conditioner has been used for a long time, the problem of insufficient refrigerant often occurs. At this time, the pressure of the entire system will drop sharply, and the exhaust gas will soar to a high level, which will affect the performance of the air conditioner. Air conditioning damage. [0003] For how to effectively detect the problem of insufficient refrigerant so as to take reasonable protection measures, no effective solution has been proposed so far. Contents of the invention [0004] An embodiment of the present invention provides a method for judging the lack of fluorine in an air-conditioning refrigerant to achieve the purpose of effectively detecting the lack of refrigerant. The method includes: [0005] Obtain...

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Problems solved by technology

[0002] After the air conditioner has been used for a long time, the problem of insufficient refrigerant often occurs. At this time, the pressure of the entire system will drop sharply, and the exhaust gas will soar to a high level, which will affect the performance of the air conditioner. air conditioning damage

[0003] For how to effectively detect the problem of insufficient refrigerant so as to take reasonable protective measures, no effective solution has been proposed so far

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