Judgment method and control method of fluorine deficiency in air conditioner

Abstract

The invention belongs to the technical field of air conditioners and aims to solve the problems that the existing air conditioners cannot conveniently and accurately judge the fluorine deficiency state of the air conditioner, and cannot adaptively adjust the operation state of the air conditioner according to the degree of fluorine deficiency. For this reason, the present invention provides a method for judging and controlling the fluorine deficiency of an air conditioner. The air conditioner control method includes: obtaining the air outlet temperature at the first air outlet and the second air outlet, and calculating the temperature difference; comparing the temperature difference and Preset the temperature difference threshold; adjust the opening of the expansion valve according to the comparison result. The air conditioner control method provided by the present invention can automatically adjust the opening of the expansion valve according to the temperature comparison result, and compensate the fluorine flow, so as to enhance the refrigeration or heating efficiency of the air conditioner system, and realize the self-adaptive adjustment of the air conditioner, thereby reducing the fluorine deficiency in the system. In a light state, the cooling or heating efficiency of the system is still guaranteed, effectively reducing energy consumption. The method for judging the fluorine deficiency of the air conditioner of the present invention has higher judgment result accuracy and is easier to realize.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for judging and controlling the lack of fluorine in an air conditioner. Background technique [0002] Air conditioning systems usually use Freon as a heat transfer medium. During the circulation of Freon in the air-conditioning duct, it can transport the heat from the room to the outside, or transport the heat from the outside to the room, thus creating a comfortable living environment for users. Affected by many factors, after the air conditioner is used for a long time, the freon in the pipeline may leak to varying degrees, resulting in a decrease in the cooling or heating effect of the air conditioner, and even causing the air conditioner to shut down. Therefore, it is very important for air-conditioning users to know how to know the Freon stock in the air-conditioning system in time. [0003] In the prior art, there are many methods for judging whether an ...

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Problems solved by technology

[0006] In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing air conditioner cannot conveniently and accurately judge the fluorine deficiency state of the air conditioner, and cannot adaptively adjust the operation state of the air conditioner according to the degree of fluorine deficiency, the first aspect of the present invention provides An air conditioner control method, the air conditioner includes a first air outlet, a second air outlet and an expansion valve, the air conditioner control method includes:

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