Defrosting control method of air conditioner

Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to a defrosting control method of an air conditioner. In order to prevent the room temperature fluctuation from being too big during defrosting, the defrosting control method comprises the following steps of starting from the fact that the air conditioner enters in the defrosting mode after starting up, calculating the accumulative consumed power W accumulation of the air conditioner in real time; and comparing the accumulative consumed power W accumulation with preset consumed power W, and judging whether the air conditioner enters in the defrosting mode again or not according to the comparative result. According to the defrosting control method of the air conditioner provided by the invention, thepreset consumed power W is adopted as a baseline, so that the time for the air conditioner to enter in the defrosting mode can be accurately judged, and the phenomenon of frequent defrosting is avoided. In addition, according to the accumulative consumed power of the air conditioner, the influence of the defrosting process on the indoor temperature can be reduced to the great extent, and the indoor temperature cannot be fluctuated greatly.

Description

Technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a defrosting control method for an air conditioner. Background technique [0002] As a device that can adjust the indoor ambient temperature, the working principle of the air conditioner is to reduce or increase the indoor ambient temperature through the high-pressure / low-pressure / gas / liquid state conversion of the refrigerant between the circulating pipelines. From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is heating, under certain humidity conditions, if the temperature of the outdoor coil is too low, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger, which will affect the air conditioner’s control. Thermal effect reduces the comfort of indoor environment and affects user experience. Therefore, when the air con...

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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