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

An electronic expansion valve and control method technology are applied in the electronic expansion valve control device, water heater and readable storage medium, and the electronic expansion valve control field, which can solve the problems of compressor liquid hammer and long adjustment time, and improve reliability. Sexuality, avoid the effect of adjusting the time too long

Active Publication Date: 2021-05-28
HEFEI MIDEA HEATING & VENTILATING EQUIP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0045] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] The main solution of the embodiment of the present invention is to adopt an electronic expansion valve control method, which includes the following steps: when receiving the start-up command of the hot water machine, obtain the ambient temperature, the water temperature in the water tank, and the number of shutdown protections. The number of shutdown protections is The number of compressor stop protections in the preset start-up cycle before the current start-up cycle; determine the initial opening of the electronic expansion valve according to the ambient temperature, water temperature and the number of stop protections; control the electronic expansion valve to open to the initial opening.

[0047] Due to the existing technology, when the unit is started, the opening of the electronic expansion valve is too sm...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/00F25B49/00F25B49/02F24H9/20
CPCF24H9/2007
Inventor 陈有文马焕桥
Owner HEFEI MIDEA HEATING & VENTILATING EQUIP
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