Corrugated Fluid Filter Surface Area and Run-off Control
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Solution Overview
Problem
Existing paint overspray filters face challenges in maximizing removal efficiency while minimizing paint run-off and maintaining low resistance, as increased efficiency often compromises holding capacity and resistance, and current designs like the 'paint pocket' filters have inefficiencies due to fluid bypassing through apertured regions, leading to unreported solvent effluent and increased environmental impact.
Innovation Solution
A fluid filter with a uniquely configured anterior surface featuring a continuous V-shaped or zigzag pattern created by slicing a high-loft polyester batt, which significantly increases the filtering surface area by 50% and retards paint run-off, using a convoluting machine to form undulating peaks and valleys that nest into each other, enhancing both efficiency and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter uses a tighter weave, smaller fiber, or more plies to increase removal efficiency, then efficiency is improved, but holding capacity decreases and resistance increases
Solution Approach 1:
The filter medium is transformed from a flat two-dimensional structure to a three-dimensional corrugated structure with peaks and valleys. This dimensional change increases the effective filtering surface area by approximately 50% within the same footprint, allowing the filter to achieve higher removal efficiency without increasing density or plies, thereby preserving holding capacity and resistance characteristics
2Reliability
If the filter uses a tighter weave, smaller fiber, or more plies to increase removal efficiency, then efficiency is improved, but resistance increases
Solution Approach 1:
The corrugated three-dimensional structure increases filtering surface area without increasing the density or thickness of the filter medium. This allows the filter to achieve higher removal efficiency while maintaining the same pressure drop characteristics, as the additional filtering capacity comes from surface area expansion rather than from adding more filtering material in the flow path
3Ease of manufacture
If traditional flat filter designs are used, then manufacturing is simple, but filtering surface area is limited and run-off is high
Solution Approach 1:
The filter medium is formed with a corrugated three-dimensional structure featuring peaks and valleys that increase the filtering surface area by approximately 50% compared to a flat filter of the same footprint. The corrugation pattern is created during the manufacturing process by passing the filter medium between corrugated rollers, maintaining manufacturing simplicity while dramatically increasing effective filtering area and reducing paint run-off through the textured surface geometry
4Quantity of substance
If paint pockets with apertured regions are used, then fluid collection is enhanced, but fluid bypassing occurs through apertures leading to increased solvent effluent
Solution Approach 1:
The harmful apertured regions that allow fluid bypassing and solvent effluent are completely removed from the filter design. The invention uses a solid corrugated filter medium without any apertures or paint pockets, eliminating the bypass path while maintaining effective fluid collection through the increased surface area and textured geometry that enhances particulate interception
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 filter achieves a 50% increase in filtering surface area and reduces paint run-off by five times compared to traditional designs, effectively capturing more paint overspray and minimizing environmental discharge, while being cost-effective and superior to 'paint pocket' filters in both efficiency and manufacturing simplicity.
Implementation Method 1
A fluid filter with a uniquely configured anterior surface featuring a continuous V-shaped or zigzag pattern created by slicing a high-loft polyester batt, which significantly increases the filtering surface area by 50% and retards paint run-off, using a convoluting machine to form undulating peaks and valleys that nest into each other
Implementation Method 2
The undulating contours of the anterior filter surface form winding fluid pathways that dynamically direct or divert fluid collection and retard fluid run-off from the anterior filter surface
Implementation Method 3
The fluid filter is used for filtering air borne paint overspray
Data Source
AI summary
A fluid filter is preferably constructed from a relatively thick batting of high loft, non-woven, fluid permeable fibrous material. The filter batting is then passed through a manufacturing device, which slices the batting in the vertical as to create two continuous filter batts from the parent filter batt. The slicing also creates a relatively deep V-shaped zig zag or waveform pattern in the anterior filter surfaces of the top and bottom of the batt. The top half deep V-shaped zigzag patterns peaks and valleys correspond or line up with the bottom half's valleys and peaks since the waveform landscape of the first child batt is essentially a negative impression of the second child batt. Accordingly, the patterns nest within one another. When separated, the two children batts each comprise a waveform landscape for dynamically directing fluid streams from the anterior filter surface to the posterior filter surface.