Control method and device for defrosting of air conditioner and air conditioner

Abstract

The invention relates to a control method and device for defrosting of an air conditioner and the air conditioner. The control method comprises the following steps of after the air conditioner executes the defrosting process, acquiring the defrosting duration of the defrosting process executed by the air conditioner; correcting the frost point temperature based on the defrosting duration of the defrosting process executed by the air conditioner; and based on the corrected frost point temperature, controlling the air conditioner to carry out defrosting judgment of whether the next defrosting process is triggered or not. According to the control method for defrosting of the air conditioner, the frost point temperature can be corrected by utilizing the defrosting duration of the defrosting process executed by the air conditioner, so that the problems of large errors between the frost point temperature and the actual working condition and inaccurate triggering of the defrosting process caused by the fact that the frost point temperature is determined by utilizing the dew point temperature and the working state of components of the air conditioner is changed in the prior art can be reduced, and the defrosting function of the air conditioner can be controlled more accurately.

Description

technical field [0001] The present application relates to the technical field of air conditioner defrosting, for example, to an air conditioner and a method for controlling the defrosting thereof. Background technique [0002] With the improvement of people's living standards, air-conditioning equipment has also entered thousands of households. The use of household air conditioners and central air conditioners is becoming more and more common. Users have higher and higher requirements for the comfort of air conditioners. Some problems have gradually come out, one of which is the problem of frost and freezing of the outdoor unit when the air conditioner is running in severe cold weather. When the air conditioner is running in a low-temperature region or a region with strong wind and snow, the condensed water on the outer surface of the condenser of the outdoor unit will drip onto the chassis. If there is icing problem, the condensed ice layer on the outdoor unit will hinder ...

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Problems solved by technology

[0004] In the process of realizing the embodiments of the present disclosure, it is found that there are at least the following problems in related technologies: the factors that affect the degree of frosting of the outdoor unit of the air conditioner include not only external environmental factors, but also factors that affect the state of the air conditioner itself; The dew point temperature calculated by other parameters is used as the frost point temperature for judging whether the air conditioner needs to be defrosted. Therefore, in some cases where the changes in parameters such as the outer ...

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