Oval Seal Stabilization Contour Alignment
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Solution Overview
Problem
Existing air filter assemblies with non-circular sealing regions face challenges in ensuring correct alignment and uniform compression of seal members, leading to potential misalignment and compromised sealing integrity due to vibration and dimensional variations.
Innovation Solution
The implementation of a filter assembly with a seal member having an oval profile, featuring outwardly and inwardly curved surfaces, which interfaces with a corresponding boss on the filter housing to ensure consistent contact pressure and proper alignment, thereby maintaining sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-circular sealing region is used in air filter assemblies, then the filter assembly can accommodate various housing shapes and improve adaptability, but it becomes difficult to ensure correct alignment and uniform compression of the seal member
Solution Approach 1:
The seal member incorporates an asymmetric stabilization contour with curved surfaces that match the asymmetric housing sealing surface. This asymmetric design provides natural alignment features that guide the seal member into the correct position during installation, eliminating alignment difficulties while maintaining adaptability to various housing shapes.
Solution Approach 2:
The stabilization contour of the seal member includes curved surfaces that complement the curved sealing surface of the housing. This curvature matching creates a self-aligning mechanism where the curved surfaces guide each other into proper alignment, ensuring uniform compression and correct positioning of the seal member.
2Adaptability or versatility
If a non-circular sealing region is used, then adaptability is improved, but uniform compression and sealing integrity are compromised due to vibration and dimensional variation
Solution Approach 1:
The asymmetric stabilization contour creates a unique fit between the seal member and housing that prevents relative movement and misalignment caused by vibration. The asymmetric geometry ensures that the seal member maintains its intended orientation and compression uniformity, thereby preserving sealing integrity.
Solution Approach 2:
The curved stabilization surfaces provide a stable, self-centering interface that compensates for dimensional variations and prevents the seal member from shifting under vibration. This curved geometry maintains consistent contact and compression, ensuring reliable sealing performance.
3Ease of manufacture
If a simple oval seal member is used, then ease of manufacture is improved, but misalignment and twisting occur due to lack of alignment features
Solution Approach 1:
The stabilization contour adds minimal complexity to the otherwise simple oval seal member. This asymmetric feature is easily incorporated into the manufacturing process and provides critical alignment functionality, guiding the seal member into correct position during installation without significantly increasing manufacturing difficulty.
Solution Approach 2:
The curved stabilization surfaces are integrated into the oval profile of the seal member, maintaining a relatively simple geometric form that is easy to manufacture. These curved features provide the necessary alignment guidance during installation, improving ease of operation without substantially complicating the manufacturing process.
Data Source
AI summary
A filter element including a first endplate, a second endplate, filter media fitted between the first endplate and the second endplate, the first endplate including an opening that allows a working fluid to flow into or out of the filter media, the filter media allowing the working fluid to be filtered through the filter media and a seal member having an oval profile disposed on the first endplate and configured to seal with a filter housing, the seal member including an inner perimeter and an outer perimeter including a plurality of outwardly curved surfaces.