Filter Element Rib Structure for Safe Removal
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Solution Overview
Problem
Conventional filter systems face difficulties in removing the filter element due to sticking and high clamping forces during replacement, making it challenging and potentially hazardous, especially in confined spaces.
Innovation Solution
The filter element is designed with a ribbed structure on the upper end plate that allows for tilting and levering out of the element by creating defined pivot points, combined with a conical design of the receiving socket to increase angular play and reduce friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a socket seal is used to completely seal the end plate against the bracket, then sealing effect is improved, but the filter element sticks to the bracket making removal difficult
Solution Approach 1:
The end plate is segmented into multiple contact zones with the bracket, where only specific regions (first and second contact zones) provide sealing and clamping forces. This segmentation allows the filter element to be sealed securely during operation while enabling easier removal by applying force at different locations (e.g., at the third contact zone) that are not constrained by sealing forces.
Solution Approach 2:
A removable cover is introduced as an intermediary component between the end plate and the bracket. The cover can be detached to provide access to the sealing interface, allowing operators to insert tools or apply leverage to overcome the sticking effect without compromising the sealing integrity during normal operation.
2Reliability
If high clamping forces are applied to secure the filter element, then reliability of connection is improved, but forces required for disassembly increase making it hazardous
Solution Approach 1:
The clamping force distribution is segmented across multiple contact zones. The first and second contact zones provide secure clamping during operation, while the third contact zone is designed to allow tool insertion and leverage application. This enables operators to overcome clamping forces safely by applying torque at the third contact zone rather than directly at the sealed interfaces.
Solution Approach 2:
The solution transitions from purely axial disassembly forces to incorporating rotational torque as a disassembly mechanism. By allowing tool insertion at the third contact zone, operators can apply rotational forces to overcome the axial clamping forces, making disassembly less hazardous and requiring lower peak forces.
3Device complexity
If a cylindrical contact surface with small gap is used, then compact design is achieved, but angular play is limited reducing leverage effectiveness
Solution Approach 1:
The contact interface is segmented into multiple zones with different functional characteristics. The first and second contact zones maintain tight cylindrical contact for compact design, while the third contact zone provides a gap or access point for tool insertion. This segmentation allows the compact cylindrical design to be maintained while enabling effective leveraging through the third contact zone.
Data Source
Figure 1a~1b
Figure 2~3
Figure 4~5
AI summary
The invention relates to a filter element (1) for a filter device (30) for filtering a fluid. The filter element (1) comprises an annular filter body (2) made of filter material, which has a central longitudinal axis (CMA) and through which the fluid can flow radially for filtering. The filter element (1) comprises an annular upper end disk (3) that seals an upper axial end (4) of the filter element (1) facing away from the filter body (2) and which has a central disk opening (5) through which a receiving nozzle (31) of the filter device (30) can pass. Furthermore, the filter element (1) comprises an end disk rib structure (6) provided on the upper end disk (3), by means of which the filter element (1) can be attached in the assembled state to an end disk holder (32) provided on the receiving nozzle (31).The end disk rib structure (6) is arranged on a top surface (7) of the upper end disk (3) facing away from the filter body (2) and has several ribs (8) arranged at intervals in the circumferential direction (U) and each projecting axially upwards from the end disk.