Method and device for detecting leakage of air-conditioning refrigerant

Abstract

The invention provides a method and device for detecting the leakage of air-conditioning refrigerant, and relates to the field of air-conditioning. The detection method includes the following steps: detecting the operating temperature of the air-conditioning compressor, judging whether the compressor is in an overheated state, and if yes, adjusting the temperature of the electronic expansion valve Opening, check the running frequency of the compressor, and judge whether the running frequency is greater than or equal to the reference frequency, if yes, check the current of the compressor, judge whether the refrigerant is blocked, and finally determine according to the air outlet temperature and return air temperature of the air conditioning system Whether the refrigerant system leaks, the detection method of the invention can accurately detect whether the refrigerant system leaks, effectively prevents the compressor from running in an overheated state, and ensures the normal and reliable operation of the air conditioner; the invention also relates to a refrigerant leakage detection device.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for detecting leakage of air conditioner refrigerants. Background technique [0002] For air conditioner users, it is likely to encounter the problem of poor cooling effect of the air conditioner when using the air conditioner, and the cause of this problem is often the leakage of refrigerant. [0003] Generally, the internal and external units of split-type household air conditioners need to be installed and connected at the user's home site. The connection ports of the internal and external units are prone to looseness, or during the long-term operation of the air conditioner, other vulnerable parts of the copper pipes may be damaged. There may be a refrigerant leak. [0004] In the air conditioning system, the leakage of refrigerant will reduce the amount of refrigerant inhaled by the compressor, resulting in the reduction of the heat generated by the compr...

AI Technical Summary

Problems solved by technology

[0007] However, there are multiple parameters associated with △T, and the association is very complicated. However, the current refrigerant leakage detection function is only partially associated with several parameters such as running time, outdoor ambient temperature, and start-stop interval time. The logic function is simple, so , it is easy to report false refrigerant leakage detection. It can be considered that the existing air conditioners need to be improved in reducing the risk of false detection of refrigerant leakage detection

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