Control method for electronic expansion valve of air conditioner

Abstract

The present invention relates to an air conditioner electronic expansion valve control method. It is characterized by that it can utilize temperature variable quantity of compressor and condenser to regulate opening angle of electronic expansion valve. Besides, said invention also provides the concrete steps of said control method.

Description

technical field [0001] The invention relates to a control method for an air conditioner electronic expansion valve, in particular to a control method for an air conditioner electronic expansion valve that uses the temperature variation of a compressor and a condenser to adjust the opening angle of the electronic expansion valve. Background technique [0002] Generally, an air conditioner refers to a device used to cool and heat a certain space, and usually also provides functions such as dehumidification and purification at the same time. The above-mentioned air conditioner needs to use an electronic expansion valve (Linear expansion valve, LEV) in order to continuously adjust the flow rate of the refrigerant according to the load change of the indoor unit. That is, the electronic expansion valve is controlled according to the difference between the current temperature of the space where the indoor unit is installed and the set target temperature, so as to control the coolin...

AI Technical Summary

Problems solved by technology

[0005] However, when the opening angle of the electronic expansion valve of the air conditioner is adjusted in the above-mentioned way, when the compressor restarts after running for a period of time, because the compression The temperature change between the compressor and the condenser is small enough to not cause problems; however, in the initial start-up state of the compressor, the temperature of the compressor will rise sharply and thus lead to the opening of the electronic expansion valve when entering the timed control state Larger degrees of angular variation, potentially causing unwanted changes in air conditioning load

[0006] It can be seen that the above-mentioned existing air-conditioning electronic expansion valve control method obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously related. The problem that the industry is eager to solve

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