Method and device for detecting refrigerant filling type of air conditioner

Abstract

The invention provides a method and device for detecting a refrigerant filling type of an air conditioner. The detection method for the refrigerant filling type of the air conditioner comprises the following steps: S1, allowing the air conditioner to enter a high-low pressure balance state in the shutdown state of the air conditioner; S2, detecting high-pressure pressure value and temperature of high-pressure gaseous refrigerants sprayed out of an air conditioner compressor; S3, searching for saturation temperatures corresponding to all the refrigerants under the high-pressure pressure value;S4, separately comparing the saturation temperatures with the refrigerant temperature to obtain a target saturation temperature; and S5, determining the target refrigerant type filled in the air conditioner according to the target saturation temperature. According to the detection method and the detection device for the refrigerant filling types of the air conditioner, the types of the refrigerants filled in the air conditioner can be automatically and accurately detected, and after an operator fills the air conditioner with a wrong refrigerant which does not conform to the type of the original refrigerant, an alarm prompt is given.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a detection method and a detection device for the refrigerant filling type of the air conditioner. Background technique [0002] With the development of science and technology and the improvement of people's living standards, air conditioners have been used more and more widely in many occasions. [0003] The air conditioner uses the basic principle that when the refrigerant is liquefied, it needs to discharge heat and when the substance vaporizes, it needs to absorb heat. When the refrigeration function is started, the high-temperature and high-pressure gas discharged from the compressor enters the condenser, absorbs heat in the outdoor condenser and becomes a high-pressure and normal-temperature liquid, and then enters the throttle valve to become a low-pressure and low-temperature liquid after decompression. The evaporator of the room absorbs the heat of the room and...

AI Technical Summary

Problems solved by technology

Therefore, during the maintenance process, the maintenance personnel may add the wrong refrigerant, resulting in abnormal operating parameters of the unit. At this time, it is often difficult to find the cause of the failure from the operating parameters.

When the wrong refrigerant is added and the air conditioner continues to be used, there are many accidents such as poor cooling effect, mismatch between the refrigerant oil and the refrigerant, damage to the compressor, and pipe breakage due to different pressure of the refrigerant.

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