Indoor unit anti-freezing control method for air conditioner

Abstract

The invention belongs to the technical field of air conditioners and particularly relates to an indoor unit anti-freezing control method for an air conditioner. The invention aims at solving the problem that when an existing air conditioner judges the indoor unit freezing condition, the accuracy is low. In order to solve the problem, the indoor unit anti-freezing control method for the air conditioner comprises the steps that when the air conditioner is in a refrigeration working condition, according to the temperature of an indoor coil pipe, the attenuation degree of an overall machine poweraverage value in a second time period relative to an overall machine power average value in a first time period and the attenuation degree of an overall machine current at a second preset moment in the second time period relative to an overall machine current at a first preset moment in the first time period, whether or not the air conditioner is enabled to enter an indoor unit anti-freezing modeis judged. The first time period is located before the second time period, so that the influence of various unrelated factors on the accuracy of a judgement result is effectively reduced, the judgement accuracy is effectively improved, and accordingly it is effectively guaranteed that the air conditioner can quickly and accurately enter the indoor unit anti-freezing mode.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an anti-freezing control method for an indoor unit of an air conditioner. Background technique [0002] With the continuous improvement of people's living standards, people have also put forward higher and higher requirements for the living environment. In order to maintain a comfortable ambient temperature, air conditioners have become an essential device in people's lives. Generally, an air conditioner includes an indoor unit, an outdoor unit, and a circulation loop for connecting the indoor unit and the outdoor unit. The heat exchange medium in the air conditioner continuously exchanges heat between the outdoor unit and the indoor unit through the circulation loop, thereby achieving a change in room temperature. Effect. Taking the cooling operation of the air conditioner as an example, the coil of the indoor unit is always at a low temperature; at this t...

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