Air conditioning unit defrosting controlling method and device and air conditioner

Abstract

The invention relates to an air conditioning unit defrosting controlling method and device and an air conditioner. The defrosting controlling method comprises the following steps that when a compressor completes starting or exits from a defrosting mode, a counter is reset and timing starts; when the time counted by a timer reaches a first preset time, defrosting influence parameters are obtained; when the defrosting influence parameters conform to a preset defrosting condition, the compressor is controlled to enter into the defrosting mode; and the compressor is controlled to exit from the defrosting mode after defrosting is finished. According to the air conditioning unit defrosting controlling method and device and the air conditioner, the defrosting influence parameters are detected and the preset defrosting condition is set reasonably, and a defrosting step is executed when the defrosting influence parameters meet the preset defrosting condition, so that effective intelligent defrosting is achieved, a good defrosting effect is realized, and a unit can be protected to achieve reliable operation.

Description

technical field [0001] The invention relates to the technical field of air conditioner defrosting, in particular to a method and device for controlling defrosting of an air conditioner unit and an air conditioner. Background technique [0002] With the popularization of the dual system of air conditioning, the central air conditioner is not only turned on for cooling in summer, but also turned on in winter for heating. Then there was a problem, that is, the frosting problem of the heat exchanger. Because the outdoor temperature is very low in winter, the heat exchanger of the air conditioner is prone to frost. Once frost occurs, it will affect the performance of the unit. Severe frost will also lead to protection of the unit and even reduce the service life of the unit. Therefore, the defrosting of the central air conditioner is critical. Among them, the more common ones are washing with water, using hot air circulation to heat and defrost, and using electric heating eleme...

AI Technical Summary

Problems solved by technology

A more common method is to defrost according to time, that is, to defrost according to a specified cycle, mainly using the defrost timer for control. When defrosting is required, defrosting cannot be carried out before the defrosting cycle is reached, resulting in waste of resources or untimely defrosting; the other is to control defrosting according to the actual frosting situation. Reasonable, but in fact it is difficult to accurately obtain the actual frosting situation, and the actual operation is difficult

Images