Multi-Way Valve Seal Insert Structure for Low-Friction Sealing
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Solution Overview
Problem
Multi-way valves with seals in vehicles face challenges with high seal friction, requiring powerful actuators to manage fluid flow effectively, which increases costs and actuator size.
Innovation Solution
A multi-way valve design incorporating a monolithic elastic seal with an internal sleeve and external ring portion, where the external ring portion is positioned to absorb compressive forces independently of the internal sleeve, reducing friction on the ball valve and allowing for improved sealing without increasing actuator torque requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional seals are used in multi-way valves, then sealing function is provided, but high seal friction requires powerful actuators increasing cost and size
Solution Approach 1:
The seal is divided into two distinct portions: an internal sleeve portion that contacts the ball valve and provides sealing, and an external ring portion that contacts the valve housing body and absorbs compressive forces. This segmentation allows the sealing function to be separated from the force-bearing function, reducing friction on the ball valve and eliminating the need for powerful actuators.
2Reliability
If compressive forces are applied to the seal to improve sealing, then sealing performance improves, but friction on the ball valve increases requiring larger actuators
Solution Approach 1:
The external ring portion is extracted as a separate functional element that specifically absorbs compressive forces applied by the valve housing body. By taking out this force-absorbing function from the internal sleeve portion, the design allows compressive forces to be applied for sealing without transferring those forces to the ball valve, thus maintaining low friction.
3Ease of operation
If seal friction is reduced to allow smaller actuators, then actuator size and cost decrease, but sealing effectiveness may be compromised
Solution Approach 1:
Different portions of the seal have different functional qualities: the internal sleeve portion is optimized for sealing contact with the ball valve, while the external ring portion is optimized for absorbing compressive forces from the valve housing body. This local differentiation allows each portion to perform its specific function effectively, maintaining sealing effectiveness while reducing overall friction on the ball valve.
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
The design achieves improved sealing with reduced friction on the ball valve, enabling efficient fluid control without the need for larger or more powerful actuators, thus optimizing performance and cost.
Implementation Method 1
a monolithic elastic seal may include an internal sleeve portion and an external ring portion. The external ring portion may be positioned between and contacting an external facing surface of the valve housing body and an internal facing surface of the line cap so that compressive forces applied to the external ring portion are not transferred to the inner contact member of the internal sleeve portion
Data Source
AI summary
A multi-way valve with seal inserts adapted to control a flow of fluid includes a valve housing, a ball valve, a monolithic clastic seal, and a rigid seal shape retainer. A multi-way valve with improved scaling is provided.