Air conditioner Freon lacking protection method and air conditioner with Freon lacking protection function

Abstract

The invention discloses an air conditioner Freon lacking protection method. The air conditioner Freon lacking protection method comprises the steps that an air conditioner runs; the internal environment temperature after first time, the starting internal coil temperature and the internal coil temperature after first time are acquired; and whether a difference value between the internal environmenttemperature after the first time and the internal coil temperature after the first time is smaller than or equal to a first temperature threshold value or not is judged, if yes, whether a differencevalue between starting internal coil temperature and the internal coil temperature after the first time is smaller than or equal to a second temperature threshold value or not is judged, and if yes, the air conditioner is in a protective state. The air conditioner Freon lacking protection method has the beneficial effects that temperature changes of the internal coil temperature are measured whenthe air conditioner is started and after the air conditioner runs for a period of time, Freon lacking judgment is conducted under the auxiliary of the changes, and influences of the indoor air humidity on Freon lacking judgment of the air conditioner are reduced; and few judgment conditions are adopted, and therefore the fault tolerance of Freon lacking judgment is improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a fluorine deficiency protection method for an air conditioner and an air conditioner with a fluorine deficiency protection function. Background technique [0002] In some cases, the air conditioner will be short of fluorine. When the air conditioner is short of fluorine, its air conditioning ability will be greatly weakened. There are many reasons for the lack of fluorine in the air conditioner. Among them, the blockage of the refrigerant passage of the air conditioner hinders the circulation of Freon, which causes the lack of fluorine in the air conditioner. The heat generated by the motor cannot be taken away by the refrigerant in time, causing the temperature of the compressor motor to become higher and higher, thus damaging the compressor. [0003] The invention patent of authorized notification number CN103134142B discloses a detection method for full blockage of air-condit...

AI Technical Summary

Problems solved by technology

However, especially when the air conditioner is cooling in summer, a large amount of water vapor will usually condense at the cold air outlet, making the indoor air humidity too high, resulting in inaccurate measurements of the indoor ambient temperature and the indoor heat exchanger coil temperature using the temperature sensor , prone to misjudgment

Secondly, since the method uses a variety of temperature value data and current data, it does not consider the case of misjudgment when the sensor that acquires the data makes a single error

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