Control method of electronic water valve
A technology of electronic water valve and control method, which is applied in the direction of valve operation/release device, valve details, valve device, etc., which can solve the problems of stalling, unable to judge whether it has entered the normal working state, etc., and achieve the goal of reducing the risk of occurrence Effect
Active Publication Date: 2019-12-10
HANGZHOU SANHUA RES INST CO LTD
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- Description
- Claims
- Application Information
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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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Embodiment Construction
[0035] Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
[0036] The electronic water valve at least includes a valve core and a DC motor, and the power output part of the DC motor is connected to the valve core through transmission or directly.
[0037] 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 valve core is the first valve plate 22, the first valve plate 22 is in the f...
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The invention provides a control method of an electronic water valve. The electronic water valve at least comprises a valve element and a direct-current motor. The electronic water valve comprises a position detection module. The control method at least includes the steps that the electronic water valve is powered on to be started; the valve element is controlled to reset to the first position; the rotating speed of the direct-current motor is controlled to be a first rotating speed, and the direct-current motor enters the first process; whether the first process is finished or not is judged by collecting the current position of the valve element through the position detection module; when it is judged that the first process is not finished, the direct-current motor is controlled to keep the first rotating speed; and when it is judged that the first process is finished, the direct-current motor is controlled to switch to the second rotating speed and enters the second process, whereinthe first rotating speed is smaller than the second rotating speed. According to the control method, by means of rotating speed changes of the motor, the output torque of the motor can be matched withrequired torques, in different stages, of the electronic water valve, and the locked-rotor generation risk 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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IPC IPC(8): F16K31/04F16K37/00
CPCF16K31/046F16K37/0041
Inventor 不公告发明人
Owner HANGZHOU SANHUA RES INST CO LTD