Air conditioner, electronic expansion valve control method and control device of air conditioner and storage medium

Abstract

The invention discloses an electronic expansion valve control method. The electronic expansion valve control method comprises the steps that when the opening quantity of electronic expansion valves needs to be adjusted, the first opening degree of the currently opened electronic expansion valve, the current opening quantity of the electronic expansion valves and the target opening quantity of theelectronic expansion valves are obtained; the target opening degree is determined according to the first opening degree, the target opening quantity and the current opening quantity; and after the opening quantity of the electronic expansion valve is adjusted, the opened electronic expansion valves are controlled to operate according to the target opening degree. The invention further discloses anelectronic expansion valve control device, an air conditioner and a readable storage medium. The air conditioner, the electronic expansion valve control method and control device of the air conditioner and the storage medium aim to reduce the difference of flow before and after switching the opening quantity of the electronic expansion valves connected in parallel, achieve smooth switching and improve system operation stability.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an electronic expansion valve control method, an electronic expansion valve control device, an air conditioner and a readable storage medium. Background technique [0002] In order to meet the heat exchange requirements of large-area indoor spaces such as shopping malls and warehouses, large-capacity indoor units are generally used to adjust the air in large-area indoor spaces. In order to improve control accuracy, parallel electronic expansion valves are generally used to simultaneously open the same opening to replace large-diameter electronic expansion valves to achieve large flow control for large-capacity indoor units. Among them, it is necessary to increase or decrease the number of electronic expansion valves to be opened according to different heat exchange demands, so as to adjust the flow rate of the air conditioning system. [0003] However, when the number o...

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Problems solved by technology

[0003] However, when the number of open electronic expansion valves connected in parallel needs to be increased or decreased, no matter what the opening degree of the currently opened electronic expansion valve is, the number of electronic expansion valves is controlled to switch and then run according to the fixed set opening degree. It is easy to cause a large flow difference before and after switching the number of electronic expansion valves, which will affect the stability of the system operation

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