Air conditioner defrosting control method

Abstract

The invention belongs to the technical field of air conditioners and particularly relates to a defrosting control method of an air conditioner. For preventing overlarge temperature fluctuation of a room in a defrosting process, the defrosting control method provided by the invention comprises the following steps of: calculating the accumulated consumed power W<accumulation> of the air conditionerin real time from the moment when the air conditioner enters a defrosting mode for the first time after the air conditioner is started; comparing the accumulated consumed power W<accumulation> with preset consumed power W, and judging whether the air conditioner should enter the defrosting mode again according to the comparison result, wherein the time when the air conditioner enters the defrosting mode for the first time after the air conditioner is started is determined according to the following ways of: acquiring the time T when the same type of air conditioner enters the defrosting mode for the first time after the air conditioner is started every time under the same environment and the same running work condition; and acquiring the time when the current air conditioner enters the defrosting mode for the first time after the current air conditioner is started according to the time T. The defrosting control method provided by the invention can be used for judging the moment when the air conditioner enters the defrosting mode more accurately and farthest reduces the influences on the indoor temperature in the defrosting process.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. Background technique [0002] As a device that can adjust the indoor ambient temperature, the air conditioner works on the principle that the indoor ambient temperature is reduced or increased by the refrigerant passing through the circulation pipeline through high-pressure / low-pressure / gas / liquid state transitions, that is, from From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in heating operation, if the temperature of the outdoor coil is too low under certain humidity conditions, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger and affect the cooling performance of the air conditioner. The thermal effect reduces the comfort of the indoor environment and affec...

AI Technical Summary

Problems solved by technology

[0003] During the heating process of existing household air conditioners, if the outdoor humidity is high enough to meet the conditions of frost formation, frost will form outdoors, and the frost formation will directly affect the operating power of the air conditioner, that is, when there is frost formation on the outdoor unit , the operating power of the air conditioner is reduced, resulting in a decrease in the indoor heating capacity, which directly affects the indoor temperature.

Existing air conditioners generally use the running time + outdoor coil temperature to judge whether to enter defrosting, but this method does not directly reflect the change of indoor temperature, and what really affects the user's experience is the indoor temperature

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