Method and device for detecting refrigerant leakage of air conditioner

Abstract

The invention discloses an air conditioner refrigerant leakage detection method including acquiring the maximum pipeline temperature of an evaporator and the minimum pipeline temperature of a condenser in the first preset time length; continuously acquiring the n real-time pipeline temperatures of the evaporator and the n real-time pipeline temperatures of the condenser in the second preset time length; calculating the absolute values of the differences of the maximum pipeline temperature of the evaporator and the real-time pipeline temperatures of the evaporator to obtain n temperature differences of the evaporator, and calculating the absolute values of the differences of the minimum pipeline temperature of the condenser and the real-time pipeline temperatures of the condenser to obtain n temperature differences of the condenser; and determining the refrigerant leakage and executing refrigerant leakage processing procedures when the n temperature differences of the evaporator are less than the preset temperature difference threshold of the evaporator, and the n temperature differences of the condenser are less than the preset temperature difference threshold of the condenser. The invention further discloses an air conditioner refrigerant leakage detection apparatus. The sensitivity of refrigerant leakage detection is high, and the refrigerant leakage can be timely detected to prevent misjudgement.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method and a device for detecting refrigerant leakage of an air conditioner. Background technique [0002] The air conditioner has the function of cooling and / or heating. During operation, the refrigerant circulates in the closed pipeline of the air conditioner under the pressure of the compressor of the air conditioner, and exchanges heat with the indoor and outdoor environment to achieve refrigeration. or heating purposes. Under normal circumstances, the refrigerant is encapsulated in the airtight pipeline of the air conditioner. However, if the air conditioner is not installed properly, or the pipeline is damaged or loosened due to vibration and other reasons during later operation, refrigerant leakage will occur, which will reduce the performance of the air conditioner. cooling or heating effect. When the leakage is serious, it will reduce the service life of the...

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