Electronic expansion valve control method and device, air conditioner and storage medium

Abstract

The invention provides electronic expansion valve control method and device, an air conditioner and a storage medium. The electronic expansion valve control method comprises the following steps that whether the start-up number of indoor units of a multi-split air conditioner changes or not is determined; and when the start-up number of the indoor units of the multi-split air conditioner changes, the opening degree of the electronic expansion valve is controlled according to the change condition of the start-up number of the indoor units and the exhaust superheat degree of a compressor. According to the electronic expansion valve control method and device, the air conditioner and the storage medium, in the using process of the multi-split air conditioner, whether the current indoor operation load of the multi-split air conditioner is changed or not is known by determining whether the start-up number of the indoor units of the multi-split air conditioner is changed or not, whether the operation frequency of the compressor is changed or not can be reflected, based on the state change of the operation frequency and exhaust temperature of the compressor, adjusting the opening degree ofelectronic expansion valve quickly and accurately can be carried out with the state change of the compressor, so that it is guaranteed that the refrigerant flow of the multi-split air conditioner meets the requirement in time, the operation effect and reliability of the multi-split air conditioner are improved, and the use experience of a user is improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular to a control method and device for an electronic expansion valve, an air conditioner and a storage medium. Background technique [0002] As people's requirements for air-conditioning systems are increasing day by day, traditional air conditioners can no longer meet market demand, especially for multi-connected inverter air conditioners. Since the electronic expansion valve is a throttling element, in the actual use of the multi-connected inverter air conditioner unit, when the compressor adjusts the operating frequency according to the indoor operating load, the electronic expansion valve will also adjust the target opening value accordingly to adjust the multi-unit The refrigerant flow rate of the multi-connected inverter air conditioner unit makes the refrigerant flow rate of the multiple inverter air conditioner unit meet the requirements. [0003] However, when...

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Problems solved by technology

[0003] However, when the indoor operating load changes greatly, the operating frequency of the compressor will also vary greatly. At this time, the response of the electronic expansion valve is relatively slow, and it may not be able to adjust to the target opening value in a timely and accurate manner.

At this time, if the opening of the electronic expansion valve is too small, the refrigerant flow rate of the multi-connected inverter air conditioner unit may not meet the requirements, which will affect the operation effect of the multi-connected inverter air conditioner unit, thereby affecting the user's comfortable experience; in addition, if the electronic If the opening of the expansion valve is too large, it may cause the multi-connected inverter air conditioner unit to return liquid, thus affecting the reliability of the multi-connected inverter air conditioner unit

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