Method for detecting refrigerant leakage of air conditioning system and air conditioning system

Abstract

The invention discloses a method for detecting refrigerant leakage of an air conditioning system and the air conditioning system. The method comprises the steps of: S10, collecting the state parameters of the air conditioning system when the external environment temperature is T in an operating process of the air conditioning system and storing the collected data at the temperature for the first time as reference data; S20, in the operating process of the air conditioning system, when the external environment temperature reaches T again, collecting the state parameters of the air conditioning system again; S30, comparing the collected data with the reference data and calculating deviation therebetween; and S40, when the deviation exceeds a predetermined value, judging the condition of refrigerant leakage. When the method disclosed by the invention is used for detecting refrigerant leakage, the detection result is not affected by an actual installing condition; the influence on the environment temperature can be eliminated, so that the extent of refrigerant deficiency in the air conditioning system can be accurately judged, and the detection result is more reliable. The invention further discloses the air conditioning system.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method for detecting refrigerant leakage in an air conditioning system. The invention also relates to an air conditioning system. Background technique [0002] For the air-conditioning system, the amount of refrigerant should be kept sufficient. If the refrigerant is missing, the capacity (cooling or heating) of the air-conditioning system will decrease, which will affect the user experience. In the prior art, there are many methods for detecting refrigerant leakage. For example, there is one that obtains the current refrigerant mass flow rate, and judges whether the refrigerant leaks according to the comparison result between the current refrigerant mass flow rate and the standard refrigerant mass flow rate; one that detects the current refrigerant pressure value, and judges whether the refrigerant leaks with the preset pressure value; It is also possible to detect ...

AI Technical Summary

Problems solved by technology

For example, the length of the connecting pipe used in the actual installation may vary greatly, and the different length of the connecting pipe will affect the parameters of the unit, so there is a deviation between the above preset value and the actual situation, resulting in inaccurate test results

Similarly, if the ambient temperature of the air conditioner cannot be guaranteed to be consistent with the corresponding ambient temperature when the preset value is determined during the actual detection, the accuracy of the detection results will also be affected.

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