Judgment method of suitability of refrigerant charge

Abstract

The invention relates to the technical field of refrigeration system maintenance. Aiming at the problem that whether the refrigerant charging amount is appropriate or not can not be conveniently judged when replenishing refrigerant, a method for judging the suitability of refrigerant charging amount is proposed, including: making supplementary refrigeration The refrigerant refrigeration system operates under the given charging operation conditions. When charging the refrigerant, the winding temperature of the compressor motor of the refrigeration system that needs to be supplemented with refrigerant is obtained in real time under the charging operation condition, and the winding temperature is recorded as the actual Winding temperature: According to the corresponding relationship between the preset operating conditions obtained in the pre-test and the winding temperature of the refrigeration system with the refrigerant amount equal to the target amount under the preset operating conditions, it can be concluded that the refrigerant amount is equal to the target amount of the refrigeration system under the charging operating condition The expected winding temperature is recorded as the expected winding temperature; judge whether the actual winding temperature matches the expected winding temperature, and if so, the refrigerant charge is appropriate. The invention is suitable for charging monitoring of refrigerant in a refrigeration system.

Description

technical field [0001] The invention relates to the technical field of refrigeration system maintenance, in particular to a method for judging the suitability of refrigerant charge. Background technique [0002] The refrigeration system consists of compressors, condensers, throttling devices and evaporators, which are connected and sealed by metal tubes, and filled with refrigerant inside. The compressors are usually fully enclosed, and the compressor completes the process from suction to exhaust. The process is realized by the operation of the motor. The amount of refrigerant should be appropriate, neither too much nor too little. The reduction of refrigerant will lead to the decline of system performance and the reduction of energy efficiency ratio; if it is reduced more, it may cause damage to the compressor motor, which may eventually cause the motor to burn out, or cause a short circuit between the turns of the motor and the electrification of the compressor shell. Si...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: to overcome the problem that the prior art cannot conveniently judge whether the supplementary amount of refrigerant is appropriate when replenishing refrigerant, and propose a method for judging the suitability of refrigerant charge

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