Detection and protection method of lack of fluorine of air-conditioners

Abstract

The invention discloses a detection and protection method of lack of fluorine of air-conditioners, comprising the following steps: a compressor runs under the state of sufficient fluorine and the absolute value of the difference value between the temperature value of an internal coil tube of the compressor and the temperature value of the environment is set at least as delta T0; cooling or heating mode is selected; after the compressor is started up to run for some time, the temperature values of the internal coil tube and the environment are measured and the absolute value delta T1 of the difference value between the temperature values of the internal coil tube and the environment is compared with the delta T0; if delta T1 is more than or equal to delta T0, the air-conditioners are diagnosed to not lack fluorine; if delta T1 is less than delta T0, the air-conditioners are diagnosed to lack fluorine and alarm; after the compressor keeps running for some time, the temperature values of the internal coil tube and the environment are measured again and the absolute value delta T2 of the difference value between the temperature values of the internal coil tube and the environment is compared with the delta T0; if delta T2 is more than or equal to delta T0, the air-conditioners are diagnosed to not lack fluorine and the alarm is gotten rid of; if delta T2 is less than delta T0, the air-conditioners are diagnosed to lack fluorine and stop running. The method solves the problems of difficult operation of artificially detecting lack of fluorine and low diagnosis accuracy.

Description

technical field [0001] The invention relates to a method of comparing the absolute value of the difference between the temperature of the inner coil of the air conditioner and the indoor environment temperature with the reference temperature value to determine whether the air conditioner is short of fluorine and the self-protection method of the air conditioner after the lack of fluorine, specifically a method Detection and protection method of fluorine deficiency in air conditioner. Background technique [0002] At present, the refrigerant used in air conditioners is mainly Freon, which is a fluorochloro compound that is easy to evaporate and liquefy. It absorbs heat when it evaporates and releases heat when it liquefies. Air conditioners use this feature to transfer energy. , to achieve the purpose of cooling and heating, but lack of fluorine is also a common fault in the use of air conditioners. If the air conditioner continues to run for a long time after lack of fluorin...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the defects of the prior art above, and provide a detection and protection method for air-conditioning fluorine deficiency that can solve the problems of manual fluorine deficiency detection operation difficulties and low judgment accuracy

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