Ring Filter Element Frame Layout for Low Flow Resistance
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Solution Overview
Problem
Existing ring filter elements face a trade-off between material usage and flow resistance, requiring high material expenditure for stability under differential pressures while maintaining low flow resistance.
Innovation Solution
The holes in the tape are arranged more concentrated in less stressed areas and less concentrated in more stressed areas by making the longitudinal spacing of the holes smaller than the transverse spacing, and the frame is made of metal, with elongated holes oriented to reduce stress peaks and incorporate stiffening features like beads and bulges to enhance stability and reduce material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the wall thickness of the frame is increased to achieve sufficient stability under differential pressures, then the frame stability is improved, but the material usage increases
Solution Approach 1:
The patent applies local quality by varying the hole spacing in different directions: longitudinal hole spacing is smaller than transverse hole spacing. This creates non-uniform material distribution where material is concentrated in the transverse direction to resist radial compression forces, while allowing smaller longitudinal spacing to reduce overall material usage. The frame achieves sufficient stability with minimal material by optimizing the local material distribution pattern.
2Loss of energy
If the number of holes and hole cross-sectional area are increased to reduce flow resistance, then the flow resistance is improved, but the frame stability deteriorates
Solution Approach 1:
The patent resolves this contradiction by implementing non-uniform hole spacing: smaller longitudinal spacing provides more flow paths in the longitudinal direction, while larger transverse spacing maintains sufficient material continuity to resist radial compression. This local variation in hole distribution optimizes both flow resistance and structural stability simultaneously.
Solution Approach 2:
The patent applies asymmetry by making the longitudinal hole spacing different from the transverse hole spacing. Specifically, longitudinal spacing is smaller than transverse spacing, creating an asymmetric hole pattern that optimizes flow resistance in the longitudinal direction while maintaining structural integrity through the larger transverse spacing that preserves material continuity for load bearing.
Data Source
Figure 1
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AI summary
The invention relates to a ring filter element (1) for filtering a fluid, preferably a liquid, comprising an annular filter body (2) made of a filter material (3) through which the fluid can flow for filtering the fluid, and an annular frame (5) through which the fluid can flow and on which the filter body (2) is radially supported, wherein the frame (5) is made with a band (9) that is helically wound around the longitudinal center axis (6) of the frame and has radial holes (10) through which the fluid can flow through the frame (5), wherein the holes (10) in the band (9) form several adjacent rows (13) of holes in the transverse direction (12) of the band, in which the holes (10) follow one another in the longitudinal direction (11) of the band, wherein the holes (10) within the respective row of holes (13) have a longitudinal distance (14) from one another in the longitudinal direction (11) of the band, wherein the holes (10) of rows of holes (13),which are adjacent in the transverse direction (12) of the strip, have a hole spacing (15) from each other in the transverse direction (12). An improvement in flow resistance and material usage can be achieved if the strip (9) is a metal strip (9) and if the longitudinal hole spacing (14) is smaller than the hole spacing (15).