Air conditioner and control method and device thereof

Abstract

The invention provides an air conditioner and a control method and device thereof. The method comprises the following steps that measurement values of the interior of a compressor are continuously acquired, wherein the measurement values comprise pressure values and / or temperature values, measurement values with the preset number in the measurement values and reaching preset threshold values are detected and identified, and the oil plug of the air conditioner is determined, so that the detection of whether the air conditioner is blocked or not is realized, the compressor is prevented from being burnt down, and the service life of the compressor is prolonged.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner and its control method and device. Background technique [0002] For flammable refrigerants, the oil used in compressors in air-conditioning systems is usually mineral oil, and the viscosity of ordinary mineral oil will increase sharply at low temperatures, especially in cooling and heating inverters. The ultra-low temperature refrigerant and lubricating oil in the condenser need to enter the condenser through the throttling device. At the same time, the amount of flammable refrigerant charged is small due to safety considerations, so the system pressure is also small, which will cause blockage of relatively high-viscosity oil, resulting in the failure of the refrigerant to participate. Circulation, compressor idling, capacity and power decline, and due to the oil level drop of the compressor, the system is short of oil and fluorine, and the co...

AI Technical Summary

Problems solved by technology

[0002] For flammable refrigerants, the oil used in compressors in air-conditioning systems is usually mineral oil, and the viscosity of ordinary mineral oil will increase sharply at low temperatures, especially in cooling and heating inverters. The ultra-low temperature refrigerant and lubricating oil in the condenser need to enter the condenser through the throttling device. At the same time, the amount of flammable refrigerant charged is small due to safety considerations, so the system pressure is also small, which will cause blockage of oil with a relatively high viscosity, resulting in the failure of the refrigerant to participate. Circulation, compressor idling, capacity and power decline, and due to the oil level drop of the compressor, the system lacks oil and fluorine, and the compressor overheats after long-term operation, which greatly reduces the service life of the compressor and the system

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