Detection method and system for leakage of refrigerant of air conditioner

Abstract

The invention discloses a detection method and system for leakage of a refrigerant of an air conditioner. The detection method comprises the steps of S10, acquiring the current running mode of the air conditioner, the current temperature of the outdoor environment and the current temperature of the indoor environment; S20, searching the normal refrigerant mass flow rate Q; S30, acquiring the current suction temperature tsuction and the suction pressure Psuction of a compressor; S40, searching the current suction specific volume Vsuction of the compressor; S50, calculating the current refrigerant mass flow rate QM; S60, judging whether the current refrigerant mass flow rate QM is smaller than the normal refrigerant mass flow rate Q; S70, if QM is smaller than Q, calculating the decrease percentage eta according to the formula that eta equals to (Q-QM) / Q%; and S80, comparing the eta with a preset percentage threshold value X. According to the detection method for leakage of the refrigerant of the air conditioner, the detection steps are decreased, the transmitted data is decreased, and accordingly detection faults are avoided, and the method is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of refrigerant leakage, in particular to a detection method and system for air-conditioning refrigerant leakage. Background technique [0002] During the installation process and long-term use of the air conditioner, the pipeline may leak refrigerant due to poor sealing, bending or long-term corrosion. Fundamentally, the leakage of refrigerant is reflected by the reduction of refrigerant flow. Insufficient amount of refrigerant will degrade the performance of the air conditioner, causing the compressor to run in a poor condition, and even damage the compressor in severe cases. [0003] The related technology discloses a detection method and system for air-conditioning refrigerant leakage (publication number: CN104296946A). A temperature-sensing package is added to the suction port of the compressor, the indoor heat exchanger and the outdoor heat exchanger respectively. Temperature and according to various ...

AI Technical Summary

Problems solved by technology

Insufficient amount of refrigerant will degrade the performance of the air conditioner, making the compressor run in a poor condition, and even damage the compressor in severe cases.

[0003] The related technology discloses a detection method and system for air-conditioning refrigerant leakage (publication number: CN104296946A). A temperature-sensing package is added to the suction port of the compressor, the indoor heat exchanger and the outdoor heat exchanger respectively. Temperature and according to various comparison steps to detect the refrigerant mass flow rate in the air conditioning system, although the phenomenon of refrigerant leakage can be found in time, but there are many detection steps and transmission data, which is prone to detection failures

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