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

Abstract

The invention discloses a method for controlling an electronic expansion valve. The method for controlling the electronic expansion valve includes the following steps: when receiving a start-up command of a hot water machine, acquiring the ambient temperature, the water temperature in the water tank and the number of shutdown protection times, the shutdown The number of protection times is the number of shutdown protection times of the compressor in the preset start-up period before the current start-up period; determine the initial opening of the electronic expansion valve according to the ambient temperature, the water temperature and the number of shutdown protection times; control the electronic expansion valve The valve is opened to the initial opening. The invention also discloses an electronic expansion valve control device, a water heater and a readable storage medium. The invention realizes that when the water heater is turned on, the electronic expansion valve can quickly meet the requirement of the opening degree of the system, and the reliability of the 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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