Parabolic Filter Coupling with Converging Wings
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Solution Overview
Problem
Existing fluid system filtration apparatuses face challenges in minimizing axial profile while maintaining filtration capacity and preventing clogging, especially in applications where debris collection at the downstream end of the filter media is a concern.
Innovation Solution
A filter coupling with a screen mesh folded about a transverse line to form converging wings, creating a parabolic shape that reduces the axial length by half while ensuring the same filtration capacity and eliminating debris collection between the filter screen and the flow passage wall, integrated within a molded tubular body made of polymeric material with the filter media overmolded across the flow path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If an oblique filter screen is used in a coupling filter, then filtration capacity is provided in a reduced axial profile, but debris collection between the filter screen and the flow passage wall at the downstream end causes clogging
Solution Approach 1:
The filter media is folded about a transverse line to form two wings that converge toward a downstream cylindrical base, creating a three-dimensional parabolic shape. This dimensional transformation allows the filter to maintain reduced axial profile while eliminating the planar oblique configuration that caused debris collection and clogging between the screen and flow passage wall.
2Length of moving object
If the filter media is folded into a parabolic shape with converging wings, then axial length is reduced by nearly one half while maintaining filtration capacity, but the manufacturing complexity of positioning and retaining the folded media increases
Solution Approach 1:
The coupling body and filter media are combined into a single integrated component through overmolding. The polymeric coupling body is molded with the screen mesh filter media already in place, eliminating the need for separate positioning and retention mechanisms. This merging of components simplifies manufacturing while achieving the compact parabolic shape with converging wings.
3Ease of manufacture
If a conventional linear filter screen is used, then manufacturing is simpler, but the axial profile is longer and clogging occurs at the downstream end
Solution Approach 1:
The filter media transitions from a conventional linear arrangement to a folded parabolic configuration with converging wings. This dimensional change reduces the axial profile by nearly one half while the overmolding process maintains manufacturing simplicity by integrating the folded structure into the coupling body in a single operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves a significant reduction in axial profile with enhanced filtration efficiency and reduced clogging tendencies, allowing for easier manufacturing and improved reliability, along with flexibility in sizing for various fluid system applications.
Implementation Method 1
a screen mesh folded about a transverse line to form two wings that converge toward a downstream cylindrical base
Data Source
AI summary
A coupling filter for a fluid system comprising a molded hollow tubular body having a wall defining a flow passage, a porous filter element of generally parabolic cross-sectional shape with a base portion extending across the entire flow passage and a pair of wing portions extending longitudinally of the flow passage and converging toward the base portion. In one form the base portion is cylindrical and in another form it is “W” shaped with a series of flat mesh panels presented to the flow path.