Dual-Bead Air Filter Seal for Uneven Compression and Voids
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Solution Overview
Problem
Current air filter sealing technologies face limitations in achieving a complete seal due to material voids and uneven compressive forces, leading to potential leakage and damage from unfiltered air and dust.
Innovation Solution
The implementation of a multiple compression seal design featuring two sealing beads of dissimilar heights, which interact to create a robust seal surface, compensating for voids and uneven compressive forces, ensuring a tighter seal and preventing air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single seal is used to seal the filter to the housing, then the device complexity is reduced, but the sealing reliability deteriorates due to material voids and uneven compression
Solution Approach 1:
The sealing structure is divided into multiple separate seals (first seal and second seal) positioned at different locations around the filter perimeter. Each seal independently addresses specific leakage paths, and the segmentation allows each seal to be optimized for its specific location, thereby improving overall sealing reliability without requiring excessive complexity in any single component.
Solution Approach 2:
Different seals are positioned at different locations around the filter perimeter based on the specific leakage risks at each location. The first seal addresses areas prone to material voids while the second seal addresses areas susceptible to uneven compression. This local quality approach ensures that each seal is strategically placed where it is most needed, improving reliability without uniformly increasing complexity throughout the entire sealing system.
2Productivity
If insufficient curing time is used during seal manufacturing, then the productivity increases, but the manufacturing precision deteriorates due to voids and missing material
Solution Approach 1:
The sealing system is designed with multiple seals positioned at different locations, which compensates for potential defects in individual seals. This preliminary action ensures that even if one seal has manufacturing defects such as voids or missing material, other seals are already in place to prevent leakage, thereby maintaining manufacturing precision without requiring excessive curing time for each individual seal.
Solution Approach 2:
The redundant seal configuration acts as a cushion against manufacturing defects. By having multiple seals in place before the filter is installed, the system compensates for potential voids or material deficiencies in any single seal. This beforehand cushioning approach allows for faster manufacturing cycles while maintaining the required level of sealing completeness.
3Ease of operation
If asymmetric forces are applied to the housing closure, then the ease of operation improves, but the sealing reliability deteriorates due to uneven pressing force
Solution Approach 1:
The sealing system is segmented into multiple seals positioned at different locations around the filter perimeter. This segmentation allows the sealing function to be distributed across multiple points, so that asymmetric forces applied during housing closure do not compromise the entire sealing system. Each seal operates semi-independently, maintaining reliability even when compression forces are uneven.
Solution Approach 2:
Different seals are positioned to address local compression needs at different locations around the filter. Areas that receive higher compression forces have seals optimized for those conditions, while areas with lower compression have seals designed to compensate. This local quality approach ensures that asymmetric forces during closure do not uniformly degrade sealing performance, as each location is optimized for its specific compression characteristics.
4Reliability
If two identical redundant seals are used, then the reliability improves, but the device complexity increases
Solution Approach 1:
Instead of using two identical seals throughout, the invention employs different seals (first seal and second seal) positioned at different locations with potentially different characteristics. Each seal is optimized for its specific location's leakage risks and compression characteristics. This local quality approach improves reliability by addressing specific vulnerability points without uniformly increasing complexity across the entire sealing system.
Solution Approach 2:
The sealing system is segmented into functionally distinct seals rather than using identical redundant seals. The first seal and second seal are positioned at different locations and may have different dimensions, materials, or compression characteristics suited to their specific locations. This segmentation improves reliability by targeting specific leakage paths while keeping the overall complexity manageable through functional differentiation rather than uniform redundancy.
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 effectively prevents unfiltered air and dust from passing through the filter, enhancing the sealing performance and ensuring the protection of downstream systems by creating a uniform and robust sealing surface.
Implementation Method 1
the compression force exerted by the seal onto the housing surface ensures a positive seal, preventing unfiltered fluid from passing through the sealing joint
Implementation Method 2
a flexible gasket material is molded to or adhered to the edges of the filter media to create a flexible sealing structure
Data Source
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AI summary
The present disclosure provides one filter with multiple standing compression seals that work together to seal against the mating filter housing assembly. The first compression bead design enables the second bead to seal against the Housing surface for maximum sealing performance for preventing unfiltered fluid from passing through a filter housing assembly.