Creased Filter Strip for Bendable Air Filtration
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Solution Overview
Problem
Existing air filter strips are prone to deformation, leading to reduced filtration efficiency due to air leakage, as they are easily deformed and lack the necessary flexibility to maintain effective filtration in various installation shapes.
Innovation Solution
A strip with alternating first and second creases that can extend and shrink, respectively, allowing for bendability while maintaining structural integrity, combined with a filtering member frame that uses these creases to restrict folds and prevent air leakage, and an apparatus for producing such strips using rollers with protrusions and recesses to shape the creases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If elastic strips are used to enable torsion and bending of the folded filter insert, then the filter insert becomes flexible and can be bent, but the strips are easy to deform and leak air, decreasing filtration efficiency
Solution Approach 1:
The strip is segmented into multiple creases (first creases and second creases) distributed along opposite sides. These creases act as independent deformation elements that work together to provide flexibility while maintaining structural integrity. The segmentation allows the strip to bend and twist without deforming the entire structure, preventing air leakage.
Solution Approach 2:
Different regions of the strip have different properties through the alternating crease pattern. The first creases on one side and second creases on the opposite side create localized deformation zones that allow bending while maintaining overall stability. This local variation in structural properties enables flexibility without compromising air tightness.
2Adaptability or versatility
If the strip is made bendable to fit various installation shapes, then adaptability improves, but the strip becomes prone to deformation and reduces filtration efficiency
Solution Approach 1:
The creases are pre-formed on the strip during manufacturing, creating predetermined deformation paths. This preliminary structuring allows the strip to be bent into various shapes without risking deformation, as the creases are designed to guide the bending process while maintaining structural integrity throughout the deformation.
Solution Approach 2:
The strip transitions from a static structure to a dynamic one through the crease pattern that allows controlled deformation. The alternating creases enable the strip to adapt its shape dynamically while maintaining structural integrity, preventing the deformation that would occur in a rigid structure without such designed flexibility.
3Ease of manufacture
If the strip uses simple elastic material for ease of manufacture, then manufacturing cost decreases, but the strip deforms easily and leaks air
Solution Approach 1:
The creases introduce curvature and geometric complexity to the otherwise flat strip structure. This curvature pattern, while adding manufacturing steps, provides the structural framework needed to prevent deformation and maintain air tightness, trading manufacturing simplicity for reliability through geometric design rather than material complexity.
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 enhances the filtration efficiency by allowing the filter to be bent into various shapes without deforming, reducing air leakage, and improving the strip's durability and longevity by distributing bending stress evenly.
Implementation Method 1
the plurality of first creases being able to extend and the plurality of second creases being able to shrink, thereby the strip being bendable towards the second side
Implementation Method 2
an apparatus for producing such strips using rollers with protrusions and recesses to shape the creases
Data Source
AI summary
A strip according to the invention includes a plurality of first creases distributed along the first side of the strip, a plurality of second creases distributed along the second side of the strip, and the plurality of first creases being able to extend and the plurality of second creases being able to shrink, thereby the strip being bendable towards the second side. The strip according to the invention is able to be bendable as well as not easily deformed.