Water heater, electronic expansion valve control method and device and readable storage medium

Abstract

The invention discloses an electronic expansion valve control method. The electronic expansion valve control method comprises the following steps that when a startup instruction of a water heater is received, the environment temperature, the water temperature in a water tank and the shutdown protection frequency are obtained, and the shutdown protection frequency is the compressor shutdown protection frequency within the preset startup periods before the current startup period; according to the environment temperature, the water temperature and the shutdown protection frequency, the initial aperture of an electronic expansion valve is determined; and the electronic expansion valve is controlled to be opened to the initial aperture. The invention further discloses an electronic expansion valve control device, the water heater and a readable storage medium. According to the electronic expansion valve control method and device, the water heater and the readable storage medium, when the water heater is started, the electronic expansion valve can rapidly meet the system aperture requirement, and reliability of a compressor is improved.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to an electronic expansion valve control method, an electronic expansion valve control device, a water heater and a readable storage medium. Background technique [0002] Most of the current heat pump water heaters use the electronic expansion valve as the throttling component. The electronic expansion valve generally has an initial opening. After the unit is turned on and heated, the electronic expansion valve starts to adjust from the initial opening according to the set conditions. , the optimum opening will be reached after a period of adjustment. [0003] When the unit is started, if the initial opening of the electronic expansion valve is too small, the compressor will be shut down due to high pressure, high temperature, high current and other reasons. If the initial opening of the electronic expansion valve is too large, and the ambient temperature of the hot water mac...

AI Technical Summary

Problems solved by technology

If the initial opening of the electronic expansion valve is too large, and the ambient temperature of the hot water machine can vary from -15°C to 46°C, the water temperature in the hot water machine can vary from 9°C to 60°C, and the ambient temperature The variation range of water temperature and water temperature is very wide, and it takes a long time to adjust from the excessive initial opening to the optimal opening, and it will also cause the risk of liquid shock of the compressor

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