Rotary Electric Valve Sealing Structure for Internal Leakage Control
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Solution Overview
Problem
Existing electric valves face challenges in maintaining sealing performance and preventing internal leakage during the rotation of the valve core, which affects their efficiency in thermal management systems.
Innovation Solution
The electric valve design incorporates a valve body assembly, a valve core seat, and a first sealing member with specific protruding portions that ensure the sealing member is tightly pressed against the valve core seat, reducing the risk of leakage by maintaining a close fit between the valve core and the valve core seat during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the valve core rotates to switch flow paths, then the electric valve can control different thermal management modes, but the sealing performance deteriorates and internal leakage occurs
Solution Approach 1:
The sealing member is pre-compressed between the protruding portion of the valve core and the valve core seat before rotation occurs. This preliminary compression ensures that when the valve core rotates to switch flow paths, the sealing member maintains sufficient contact pressure with the sealing surface, preventing internal leakage while enabling flow path switching.
Solution Approach 2:
The sealing member is positioned at a specific location on the valve core (at the protruding portion) rather than uniformly distributed. This localized sealing arrangement concentrates the sealing function at the critical interface where the valve core contacts the valve core seat, ensuring reliable sealing during rotation without compromising flow path switching capability.
2Reliability
If the sealing member is tightly pressed to improve sealing, then internal leakage is reduced, but the structure becomes more complex
Solution Approach 1:
The sealing function is integrated into the valve core structure itself through the protruding portion that directly compresses the sealing member against the valve core seat. This merging of the sealing mechanism with the valve core eliminates the need for separate sealing assemblies or complex adjustment mechanisms, achieving reliable sealing while maintaining structural simplicity.
Solution Approach 2:
The valve core's protruding portion automatically provides the compression force needed to seal the sealing member during rotation. The sealing action is self-regulating through the mechanical interaction between the protruding portion and the sealing member, eliminating the need for external sealing mechanisms or additional components to maintain sealing pressure.
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 design enhances the sealing performance of the electric valve, reducing the risk of internal leakage and ensuring reliable operation during the rotation of the valve core, thereby improving the overall efficiency of the thermal management system.
Implementation Method 1
the body portion is axially pressed tightly between the first face and a side wall of the valve body assembly
Implementation Method 2
the outer surface of part of the valve core fits closely with at least part of the third face
Data Source
AI summary
An electric valve includes a valve body component, a valve core, a valve core base, and a first sealing member. The valve body component includes an accommodating portion, and the accommodating portion forms an accommodating cavity. The first sealing member includes a first protruding portion, a second protruding portion, and a main body portion; the main body portion is located between the first protruding portion and the second protruding portion. The valve core base includes a first surface, a second surface, and a third surface, wherein the first surface and the third surface extend in the radial direction of the valve core base; at least a part of the valve core base is located in the accommodating cavity, and the first sealing member is located in the accommodating cavity. Along the radial direction of the accommodating portion, the first protruding portion abuts against the second surface, and the second protruding portion abuts against the accommodating portion.