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Method for controlling electronic water valve

A technology of electronic water valve and control method, applied in the direction of valve operation/release device, valve details, valve device, etc., can solve the problems of locked rotor, inability to judge whether it has entered a normal working state, etc., to reduce the risk of occurrence. Effect

Active Publication Date: 2019-12-10
HANGZHOU SANHUA RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this control method cannot judge whether it has entered the normal working state, there is a possibility of stalling

Method used

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  • Method for controlling electronic water valve
  • Method for controlling electronic water valve
  • Method for controlling electronic water valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[0034] The electronic water valve at least includes a valve core and a stepping motor, and the power output part of the stepping motor is connected to the valve core through transmission or directly.

[0035] The spool can be in the form of rotation. When the valve is opened or closed, the spool moves a certain distance after the valve port is completely closed or fully opened before reaching the position of stopping rotation. At this time, a relatively large motor driving torque is required. Wherein, the first and second positions are the positions where the valve core stops rotating determined by the mechanical structure, and the first and second positions are respectively located at the two ends of the valve core stroke. Specifically, in one embodiment, as Figure 12 As shown, the spool is the first valve plate 22, the first valve plate 22 is i...

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PUM

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Abstract

The invention provides a method for controlling an electronic water valve. The electronic water valve comprises a valve element and a direct current motor. The electronic water valve is provided witha position detection module. The method for controlling the electronic water valve comprises the steps that a first process is conducted, wherein the rotating speed of the direct current motor is a first rotating speed; current positions of the valve element are collected through the position detection module so that it can be judged whether the first process is finished or not; when it is judgedthat the first process is not finished, the direct current motor is controlled to maintain the first rotating speed; and when it is judged that the first process is finished, the direct current motoris controlled to switch to a second rotating speed and enter a second process, wherein the second rotating speed is lower than the first rotating speed. According to the method for controlling the electronic water valve, through rotating speed changes of the motor, the output torque of the motor is matched with demanded torque of the electronic water valve in different stages, and the occurrence risk of locked rotor is reduced.

Description

technical field [0001] The invention relates to the technical field of fluid control, in particular to a method for controlling a water valve. Background technique [0002] Electronic water valves are generally composed of two parts, one part is the valve body part, and the other part is the actuator that controls the opening. The actuator includes a driving part, and the driving part includes a motor. [0003] When the valve core is in different positions, the friction torque between the valve seat and the valve core may be different, and the driving part mainly makes the valve plate continue to rotate by overcoming the friction torque between the valve core and the valve seat or the valve housing. At this time, if the output torque of the driving part is less than or close to the friction torque, the electronic water valve may be locked. The blocked rotation of the water valve will bring a series of problems, such as the overheating of the motor, the failure of the valve...

Claims

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Application Information

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IPC IPC(8): F16K31/04F16K37/00
CPCF16K37/0083F16K31/046
Inventor 不公告发明人
Owner HANGZHOU SANHUA RES INST CO LTD