Air Filter Cartridge Seal Geometry for Cartridge Authentication
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Solution Overview
Problem
Existing air filter arrangements for internal combustion engines and gas turbine systems face challenges in ensuring that only appropriate filter cartridges are installed, while maintaining ease of service and preventing unauthorized installation.
Innovation Solution
The implementation of a seal arrangement with an axial pinch seal surface featuring a projection/recess contour and a seal contour projection stabilizing portion, along with an inlet cap that includes a separator tube component, enhances the security and integrity of the filter cartridge within the air cleaner assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal arrangement with projection/recess contour is implemented, then cartridge authentication and seal integrity are improved, but device complexity increases
Solution Approach 1:
The seal arrangement employs asymmetric projection and recess contours that create a non-matching geometry between authorized and unauthorized cartridges. The projection member on the seal arrangement only complements the corresponding recess contour on approved cartridges, providing mechanical authentication while maintaining manufacturing feasibility through simple geometric modifications to the seal structure.
2Reliability
If a stabilizing portion is added to inhibit seal deformation, then seal reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The stabilizing portion is pre-configured in a relaxed state that allows flexible insertion during cartridge installation. Once the cartridge is installed, the stabilizing portion automatically engages with the housing and assumes its functional shape, providing seal deformation prevention without requiring additional operational steps or complicating the installation process.
3Productivity
If separator tube component is integrated into inlet cap, then filtration efficiency is improved, but device complexity increases
Solution Approach 1:
The separator tube component is integrated directly into the inlet cap structure, merging two previously separate functions (inlet sealing and particle separation) into a single unified component. This integration eliminates the need for separate separator tube assemblies and their associated mounting hardware, thereby improving filtration efficiency while actually reducing overall device complexity through component consolidation.
Data Source
AI summary
According to the present disclosure, air cleaner assemblies, components, features, and methods relating thereto, are described. These features, in part, relate to configuration of a preferred seal arrangement and seal surface of the cartridge. Particular arrangements are shown, in which: the filter cartridge includes a seal arrangement having a axial pinch seal surface with a projection/recess contour including at least one projection thereon; and, the cartridge includes a seal contour projection stabilizing portion at a location in perimeter alignment with the portion of the seal pinch arrangement including the first housing engagement projection. Additional features are included that relate to clean air separator section tubes of a precleaner arrangement secured to a cartridge. These features can be used in cartridges including features outlined above, or in alternative cartridges. Additional features of air cleaner arrangements and filter cartridges in accord with the above are described.