Detection method of fluorine deficiency state of refrigerant

Abstract

The present application discloses a method for detecting the fluorine-deficient state of the refrigerant, which includes obtaining the compressor winding temperature value and the discharge temperature value, matching the compressor winding temperature value and the discharge temperature value according to a pre-stored relationship mapping table, and obtaining the corresponding Compare the energy efficiency coefficient with the preset fluorine threshold to obtain the corresponding fluorine deficiency level. The parameters included in the relational mapping table are the operating frequency of the air conditioner, the winding temperature threshold, the exhaust gas temperature threshold and the value of the energy efficiency coefficient; the corresponding relations of the four parameters are uniquely determined. The present application judges the fluorine-deficiency level of the air-conditioning refrigerant through the mapping relationship table, and identifies the fluorine-deficiency state of the air-conditioner. And through the adjustment of the opening of the electronic expansion valve, the air conditioner is in a weak fluorine-deficient working state, which reduces the loss of the air conditioner.

Description

technical field [0001] The invention relates to the technical field of air-conditioning control methods, in particular to a detection method for a fluorine-deficient state of a refrigerant. Background technique [0002] When there are leaks in the refrigeration system and the refrigerant leaks slowly, the refrigeration system will experience never lack of fluorine—the first level of fluorine deficiency—the second level of fluorine deficiency, etc. At the first level, the lack of system capacity may not affect the user's use. When the second level is reached, the cooling (heating) capacity of the system is significantly reduced, which will obviously affect the user's use. How to detect the degree of fluorine deficiency is an urgent problem we need to solve. In the prior art, the temperature of the compressor winding is directly used to judge the fluorine deficiency state of the refrigeration system, but due to the detection accuracy of the winding temperature and the tempera...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a detection method for the fluorine-deficient state of the refrigerant, which solves the detection problem of air-conditioning refrigerators

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