Freezing prevention control method of indoor unit of air conditioner

Abstract

The invention belongs to the technical field of air conditioners, in particular to a freezing prevention control method of an indoor unit of an air conditioner. The problem that a freezing condition of the indoor unit of an existing air conditioner is judged only through a temperature of an inner coiled tube so as to easily cause misjudgment is solved. The freezing prevention control method of theindoor unit of the air conditioner disclosed by the invention comprises the following steps: acquiring current of an air blower and a temperature of a coiled tube of the indoor unit when the air conditioner is at refrigerating operation; judging whether the air conditioner enters into a freezing prevention mode of the indoor unit according to the current of the air blower of the indoor unit and adifference value between the temperature of the coiled tube of the indoor unit and a standard temperature of the coiled tube when the temperature of the coiled tube of the indoor unit is smaller thanthe freezing temperature of the coiled tube of the indoor unit; judging the entrance time of the indoor unit into the freezing prevention mode according to the current of the air blower of the indoorunit and the difference value between the temperature of the coiled tube of the indoor unit and the standard temperature of the coiled tube, so that the judgement ability of the air conditioner can be greatly improved.

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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Problems solved by technology

[0005] In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing air conditioner judges the freezing condition of the indoor unit only by the temperature of the inner coil tube, it is easy to cause misjudgment, the present invention provides an air conditioner The indoor unit anti-freezing control method, the indoor unit anti-freezing control method includes: when the air conditioner is

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