Filter Element Perforation Pattern for Marking and Flow
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Solution Overview
Problem
Existing filter elements face increased flow resistance due to the interruption of the flow area caused by visually recognizable markings on the support structure, which reduces the total flow area and compromises mechanical strength.
Innovation Solution
A filter element with a second hole pattern forming visually recognizable marking elements, allowing the marking surface to also function as an additional flow-through area, thereby minimizing the loss of effective flow area while ensuring good visual recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a marking surface is provided on the support structure to attach visually recognizable markings, then visual recognition of markings is improved, but the total flow area is reduced and flow resistance increases
Solution Approach 1:
The marking surface is designed with a second hole pattern that makes the support structure porous in the marking area, allowing fluid to flow through the marking region. This resolves the contradiction by enabling both visual recognition of markings and maintenance of flow area, as the holes provide flow paths while the markings remain visible on the surface.
2Loss of information
If a marking surface is provided on the support structure to attach visually recognizable markings, then visual recognition of markings is improved, but mechanical strength of the support structure is reduced
Solution Approach 1:
The second hole pattern in the marking area creates a porous structure that maintains mechanical strength while allowing markings to be visually recognized. The distributed holes provide flow paths and reduce the need for large solid marking areas, thereby preserving the structural integrity of the support tube.
Data Source
Figure 1~5
Figure 2
Figure 3
AI summary
The invention relates to a filter element for filtering fluids, comprising a flat support structure which forms the wall of a support tube (1) which surrounds the exterior of a filter medium and forms a through-flow surface and a marking surface (9), the through-flow surface having through-flow apertures (5) forming a perforation pattern (3) and the marking surface (9) having visibly discernible marking elements (11). The filter element is characterized in that the marking elements (11) are formed in the marking surface (9) by a second perforation pattern (13) which contrasts with the perforation pattern (3) of the through-flow surface in a visibly discernible manner.