Filter Element Bead Mounting for Axial Stability
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Solution Overview
Problem
Existing air filter elements for internal combustion engines, particularly in commercial vehicles, require frequent replacement due to clogging and lack secure mounting solutions, especially for longer filter lengths.
Innovation Solution
A filter element with a filter bellows and end disks featuring a bead that engages with a complementary receptacle in the housing cover, allowing for secure axial clamping and supporting the element, even in slanted or horizontal orientations, while maintaining fluid flow efficiency and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If filter elements are made longer to increase filtration capacity, then filtration efficiency is improved, but mounting security deteriorates due to lack of stable support
Solution Approach 1:
The invention adds a new dimensional aspect to mounting by introducing axial support through the bead-receptacle engagement. Instead of relying solely on radial clamping, the filter element gains stability in the axial dimension, allowing longer elements to be securely mounted without compromising mounting security while maintaining increased filtration capacity.
2Quantity of substance
If filter elements are made longer to increase filtration capacity, then filtration efficiency is improved, but ease of exchange deteriorates due to difficult removal and installation
Solution Approach 1:
The mounting function is segmented into two independent mechanisms: radial clamping for securing and axial support for positioning. The bead-receptacle feature provides automatic axial positioning during insertion, while the clamping elements handle radial securing. This segmentation allows long filter elements to be exchanged easily without requiring complex manual alignment, maintaining ease of exchange while increasing filtration capacity.
3Ease of operation
If traditional clamping methods are used, then mounting simplicity is maintained, but vibration resistance deteriorates due to insufficient support
Solution Approach 1:
The bead acts as an intermediary element between the filter element and housing, providing automatic axial positioning and support. This intermediary feature works in conjunction with the clamping elements to create a complete mounting solution that maintains simplicity while significantly improving vibration resistance through the additional axial support mechanism.
4Reliability
If axial support is added to improve mounting security, then mounting reliability is improved, but device complexity increases
Solution Approach 1:
The axial support function is merged with the existing end disk structure through the bead feature, rather than being implemented as a separate component. The bead is integrated into the end disk, and the receptacle is formed in the housing cover, creating a compact, unified mounting system that improves reliability without significantly increasing structural complexity.
Data Source
AI summary
A filter element for a filter system for filtering a fluid has a filter bellows arranged about a longitudinal axis and enclosing an interior of the filter element. An end disk that is provided with an opening to the interior of the filter element is arranged at the filter bellows. The end disk has a bead that is arranged at the opening to the interior and partially surrounds the opening to the interior. The bead projects outwardly in a direction of the longitudinal axis. The filter system has a housing with a cover and a housing part closable by the cover. The filter element can be exchangeably arranged in the housing. The bead, in a mounted state of the filter element in the housing, engages a complementary receptacle arranged at an inner side of the cover.