Electromagnetic Valve Stroke Limiting for Smoother Opening
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Solution Overview
Problem
Existing electromagnetic valves face challenges in improving the performance of valve opening during the valve opening process.
Innovation Solution
The electromagnetic valve incorporates a limiting member, first and second springs, and specific limiting portions on the movable iron core and valve core to restrict movement and enhance the valve opening process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electromagnetic coil is energized to generate electromagnetic attraction force, then the valve core moves toward the static iron core to open the valve port, but the valve opening performance needs improvement
Solution Approach 1:
The movement restriction mechanism is segmented into multiple limiting portions (first limiting portion on limiting member, second limiting portion on movable iron core, third limiting portion on valve core, fourth limiting portion on movable iron core) that independently control different stages of the valve opening process. This segmentation allows precise control of the valve core movement at different phases, improving valve opening performance while keeping each limiting portion structurally simple.
Solution Approach 2:
The limiting member acts as an intermediary component between the movable iron core and the valve core. It includes a first limiting portion that abuts against the valve core and is driven by the movable iron core through the second limiting portion. This intermediary structure enables controlled force transmission and movement restriction, improving valve opening performance without requiring direct complex coupling between the movable iron core and valve core.
2Manufacturing precision
If the movable iron core drives the valve core to move toward the static iron core, then the valve port opens, but the movement control precision needs improvement
Solution Approach 1:
Different limiting portions are positioned at specific locations to provide localized movement control: the first limiting portion controls the valve core's initial movement, the second limiting portion controls the movable iron core's drive motion, the third limiting portion controls the valve core's final position, and the fourth limiting portion controls the movable iron core's stroke. This local quality approach achieves precise movement control at each critical point without requiring complex overall structure.
Solution Approach 2:
The limiting portions are pre-positioned on the respective components before operation. The first and third limiting portions are预先 set on the limiting member and valve core respectively, while the second and fourth limiting portions are pre-formed on the movable iron core. This preliminary arrangement ensures that when the electromagnetic coil is energized, the movement control is immediately activated without requiring additional control mechanisms, achieving precise movement control with simple structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves the performance of valve opening by optimizing the movement restrictions between the limiting member and the movable iron core, and between the movable iron core and the valve core, resulting in smoother and more efficient valve opening.
Implementation Method 1
the external electromagnetic coil is energized to generate electromagnetic attraction force between the movable iron core and the static iron core
Implementation Method 2
after the electromagnetic coil is powered off, under the action of the return spring force, the movable iron core drives the valve core to move away from the static iron core to close the valve port
Data Source
AI summary
An electromagnetic valve, including a valve body, a valve sleeve, a valve element, a static iron core, a movable iron core and a first valve port portion, and further including a limiting member, a first spring and a second spring. One end of the first spring abuts against the limiting member, and the other end of the first spring abuts against the static iron core. One end of the second spring abuts against the movable iron core, and the other end of the second spring abuts against the valve element. The limiting member includes a first limiting portion, and the movable iron core includes a second limiting portion. The valve element includes a third limiting portion, and the movable iron core includes a fourth limiting portion.