Cold air prevention control method of air conditioner indoor unit

Abstract

The invention discloses a cold air prevention control method of an air conditioner indoor unit. The cold air prevention control method of the air conditioner indoor unit comprises the steps of: measuring indoor temperature T1, obtaining the temperature T2 of an indoor fan for preventing stop of the cold air and the temperature T2aim of a target coil according to the indoor temperature T1; measuring the temperature T2 of an indoor coil; judging the relation between the temperature T2 of the indoor coil and the temperature T2 of the indoor fan for preventing stop of the cold air and the temperature T2aim of the target coil, and selecting a fan start mode according to the judgment result. According to the cold air prevention control method of the air conditioner indoor unit, the air conditioner indoor unit gently adjusts the rotating speed of the fan in a self-adapting manner when the air conditioner indoor unit enters a cold air prevention mode to run, and the temperature T2 of the indoor coil is controlled within a demanded value to ensure the air outlet temperature, so that the rotating speed of the air conditioner indoor unit does not frequently fluctuate. The cold air prevention control method is accurate to control; the heating capacity is improved, and the use comfort is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a control method for preventing cold wind of an air conditioner indoor unit. Background technique [0002] The current air conditioners with heating function generally have anti-cold air control, the purpose is to prevent the indoor unit from blowing out cold air when the temperature of the indoor coil is low, affecting the user's comfort. At present, there are mainly two anti-cold wind control methods: [0003] The first type is that the indoor unit of the air conditioner is set to several speeds such as high wind, medium wind, low wind, and breeze, among which the breeze is the anti-cold wind speed. When the anti-cold wind enters, it will directly enter the breeze from the set wind. From high wind, medium wind or low wind directly to light wind operation, the change of fan speed is obvious. [0004] The second type, when entering anti-cold wind, the fan speed will de...

AI Technical Summary

Problems solved by technology

[0005] With the above two control methods, there will be switching between different wind speeds. Due to the large difference between different wind speeds, the noise will be more obvious when switching, especially during frequent switching between normal operation and anti-cold wind operation. High and low, affecting the comfort of use

Moreover, the air conditioner cannot continue to operate stably, which affects the heating effect

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