Air conditioner and anti-condensation control method thereof

Abstract

The invention relates to an air conditioner and an anti-condensation control method thereof. The anti-condensation control method comprises the following steps: in a refrigerating operation mode, theindoor environment temperature of an air conditioner indoor unit of the air conditioner and the indoor environment relative humidity are detected; and when the indoor environment temperature is higherthan the indoor environment temperature threshold, and the indoor environment relative humidity is higher than the indoor humidity threshold, the air conditioner is controlled to enter an anti-condensation mode. In an anti-condensation mode, the first electronic expansion valve openness is calculated through the exhaust temperature PID control, the second electronic expansion valve openness is calculated through the coiler temperature PID control, and the smaller one of the first electronic expansion valve openness and the second electronic expansion valve openness is used as the actual electronic expansion valve openness of the air conditioner, so that the excellent anti-condensation effect is achieved, and the problem of excessive refrigeration caused by use of the coiler temperature ascontrol parameters in the prior art is prevented. In addition, the relatively stable temperature and the low fluctuation can be guaranteed through the PID control algorithm.

Description

technical field [0001] The invention relates to an air conditioner, in particular to an air conditioner anti-condensation control method and the air conditioner. Background technique [0002] When the air conditioner is running under certain working conditions, the evaporation temperature of the indoor unit of the air conditioner is often lower than the air dew point temperature of the indoor environment. At this time, the air conditioner will precipitate a lot of condensed water, accompanied by serious condensation. The root cause of condensation is that the evaporation temperature of the heat exchanger of the air conditioner is lower than the air dew point temperature, which causes the water vapor in the air to be separated into condensed water or dewdrops when it is cooled. Solving the problem of air-conditioning condensation has always been one of the technical problems in the development of air-conditioning products. The current anti-condensation measures are basically...

AI Technical Summary

Problems solved by technology

From the perspective of control, the anti-condensation method is basically to increase the speed of the indoor fan mechanically or reduce the frequency of the compressor. These anti-condensation measures often cause fluctuations in the evaporation temperature of the indoor unit, and are often accompanied by an increase in the noise of the indoor unit or Cooling Capacity Reduction

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