Air conditioner control method and air conditioner

Abstract

The invention provides an air conditioner control method and an air conditioner. When the air conditioner is in the refrigeration mode, an inner unit electronic expansion valve is subjected to proportional adjusting according to the target superheat degree of an indoor unit, and the inner unit target superheat degree is changed correspondingly along with changing of the indoor environment temperature, changing of the set temperature and changing of the outdoor temperature. Accordingly, the control precision of the indoor environment temperature is improved, and the starting frequency of a compressor is decreased.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a control technology for an expansion valve arranged in a refrigeration device. Background technique [0002] At present, when the air conditioner is cooling, the opening of the electronic expansion valve of the internal unit is adjusted and controlled according to the target superheat. The target superheat is generally a fixed value. When the actual superheat is less than the target superheat, the electronic expansion valve is closed. When the superheat is reached, the electronic expansion valve opens up. The target superheat does not change with the change of the indoor temperature, resulting in the following adverse effects: when the indoor ambient temperature is greatly different from the set temperature, the air conditioner cools down slowly; when the indoor ambient temperature is close to the set temperature, the air conditioner cools down too quickly, causing temperature T...

AI Technical Summary

Problems solved by technology

The target superheat does not change with the change of the indoor temperature, resulting in the following adverse effects: when the indoor ambient temperature is greatly different from the set temperature, the air conditioner cools down slowly; when the indoor ambient temperature is close to the set temperature, the air conditioner cools down too quickly, causing temperature The fluctuation range is large, and the compressor starts and stops frequently

[0003] When the outdoor ambient temperature changes, affected by the heat transfer of the wall, the electronic expansion valve will take corresponding actions after the indoor ambient temperature fluctuates, and the adjustment will have a certain delay

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