Integrated Endcap Seal Member for Filter Leak Reduction
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Solution Overview
Problem
Conventional cartridge-type filter assemblies face issues with leak paths, increased complexity, and difficulty in servicing due to facial and radial seal members, which are prone to down-shifting under differential pressure.
Innovation Solution
An integrated seal member is positioned within the endcap of the filter assembly, acting as both a seal and an endcap skirt, eliminating potential leak paths and enhancing servicing ease by utilizing the envelope space more efficiently and providing better protection against differential pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a facial seal member is used to seal the clean side from the dirty side, then sealing is achieved, but the seal member is subject to down-shifting at the end of service interval due to higher differential pressure
Solution Approach 1:
The seal member is integrated with the endcap to form a single unified component. The endcap serves dual functions as both a structural support element and a sealing element, eliminating the need for a separate facial seal member that would be subject to down-shifting under differential pressure
Solution Approach 2:
The endcap is designed to perform multiple functions simultaneously: it provides structural support, maintains pressure differential, and creates the sealing barrier between clean and dirty sides. This multi-functionality eliminates the need for separate components and improves reliability
2Reliability
If a radial seal member is used to seal the filter assembly, then sealing is achieved, but the design complexity increases and servicing becomes more challenging
Solution Approach 1:
The seal member and endcap are merged into a single integrated component. The endcap's outer peripheral surface directly forms the sealing interface with the filter housing, eliminating the need for a separate radial seal member and reducing design complexity
Solution Approach 2:
The endcap serves as both a structural component and a sealing component. Its outer peripheral surface creates the radial seal with the filter housing, while its main body provides structural support and defines the central aperture, reducing the number of parts needed
3Reliability
If a conventional seal member configuration is used, then sealing is provided, but two potential leak paths are created around the seal member
Solution Approach 1:
The seal member and endcap are integrated to eliminate gaps and interfaces between separate components. The continuous sealing surfaces formed by the integrated structure prevent leak paths that would exist at the interfaces of separate seal members and endcaps
Solution Approach 2:
The potential leak paths around the seal member are eliminated by integrating the seal with the endcap. The seamless integration removes the interfaces where leaks could occur, extracting the harmful leak paths from the system
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 integrated seal member reduces leak paths, simplifies manufacturing, and enhances the ease of servicing while ensuring effective sealing and protection against counterfeit elements, maintaining engine integrity and filter performance.
Implementation Method 1
The seal member is positioned within the central aperture of the endcap and is adhered to the endcap
Data Source
AI summary
A filter element comprises a filter media for filtering a fluid, an endcap positioned at an axial end of the filter media, and a seal member. The endcap comprises a main wall that defines a central aperture. The seal member is positioned within the central aperture of the endcap and is adhered to the endcap.