Filter Housing Cap Seal Integration for Leak Prevention
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Solution Overview
Problem
Existing filter housing caps in air-conditioning systems require additional securing means due to high forces needed for sealing against pressure and moisture, and are prone to deformation, leading to leakages and complex seal integration.
Innovation Solution
A cap with an integrated seal located inside the filter housing, utilizing a thermoplastic elastomer with multiple sealing lips, where the seal is deformable to ensure tightness without external securing elements, and a U-shaped channel for securement, allowing the cap to be easily replaced and maintaining durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial seals are used in known caps, then leak tightness against air and water is achieved, but additional securing means are required and the cap structure becomes more complex
Solution Approach 1:
The seal is integrated directly into the cap body as an intrinsic component rather than being a separate element requiring additional securing means. The seal forms part of the cap's structure, merging the sealing function with the cap itself, thereby eliminating the need for separate securing elements while maintaining leak tightness.
2Reliability
If radial seals are used in known caps, then leak tightness against moisture is achieved, but additional securing means are required and the cap is prone to deformation
Solution Approach 1:
The seal is merged with the cap body structure, forming an integrated unit where the seal cannot separate from the cap. This integration prevents cap deformation from compromising seal integrity, as the seal moves with the cap rather than being a separate element that could detach or fail under deformation stress.
Solution Approach 2:
The seal is nested within the cap body structure, with the seal positioned inside the cap rather than on the outer surface. This nesting arrangement protects the seal from external deformation forces and ensures the seal remains effective even when the cap undergoes minor dimensional changes during use.
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 solution ensures reliable and long-lasting sealing with minimal force required, avoiding deformation and complex integration issues, while allowing for easy seal replacement and maintaining structural integrity of both the cap and housing.
Implementation Method 1
a seal (32), in particular a radial seal, which is implemented of a thermoplastic elastomer... the seal, after the cap has been placed into the opening and covers it, is preferably completely disposed within the housing
Implementation Method 2
the seal is at least minimally compressed and therewith fulfills its purpose
Implementation Method 3
water or moisture occurring in the filter housing are only at the seal prevented from penetrating out
Data Source
AI summary
A housing for a motor vehicle comprises at least one opening and at least one cap which comprises a seal on an inner side such that the seal is disposed within the housing of the air-conditioning device when the cap caps the opening.