Filter Holding Frame Gasket Structure to Minimize Air Bypass
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Solution Overview
Problem
Air filtration systems face increased costs due to gaskets attached to filters, which become worn and ineffective over time when attached to holding frames, requiring costly replacements.
Innovation Solution
A filter holding frame assembly with a gasket featuring a u-shaped cross-section connection portion and a flexible sealing element that extends into the central aperture, allowing for secure sealing without the need for additional gaskets on filters or frames, and a kit of elongated gasket strips for easy retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gaskets are attached to individual filters, then sealing is provided, but the unit costs of the filters increase
Solution Approach 1:
The gasket is extracted from the filter assembly and repositioned to be attached only to the holding frame, separating the sealing function from the filter media. This allows filters to be supplied without gaskets, reducing filter unit cost, while the holding frame bears the sealing responsibility.
Solution Approach 2:
The holding frame is given the additional function of supporting the gasket, making it a multi-functional component that both secures filters and provides sealing. This consolidates the sealing function into a single location rather than requiring gaskets on both filters and frame.
2Reliability
If gaskets are attached to holding frames, then sealing is provided, but the gaskets become worn and ineffective over time, requiring costly and laborious replacement
Solution Approach 1:
The gasket attachment system is designed to be dynamic and adaptable, allowing the gasket to be easily repositioned or replaced on the holding frame without requiring frame modification. The U-shaped connection portion enables quick installation and removal.
Solution Approach 2:
The U-shaped connection portion acts as an intermediary mechanism between the gasket and holding frame flange, providing a simple interface that facilitates easy gasket replacement while maintaining secure attachment during operation.
3Reliability
If gaskets are made durable and resistant to wear, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The gasket material and structural parameters are optimized to achieve adequate durability without excessive cost. The U-shaped cross-section with slot provides structural integrity while using minimal material, balancing durability and manufacturing cost.
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 provides a cost-effective and durable sealing solution that minimizes bypass and is easy to replace, reducing operational costs and maintaining effectiveness over time.
Implementation Method 1
The sealing portion has a first flexible sealing element that extends away from the connection portion and into the central aperture
Data Source
Figure 1
Figure 2A~2B
Figure 2C
AI summary
In one embodiment, a filter holding frame assembly includes a frame having a plurality of walls forming a quadrilateral ring and a gasket. The frame has a plurality of flanges, and each flange is coupled to a respective one of the walls and extends into the ring. The gasket has a connection portion coupled to a sealing portion. The connection portion has a substantially u-shaped cross-section coupled to the flange. The sealing portion has a flexible sealing element that extends away from the connection portion. In another embodiment, a gasket includes a connection portion coupled to a sealing portion. The connection portion has a substantially u-shaped cross-section configured to receive a filter holding frame and includes a bottom. The sealing portion comprises a first flexible sealing element that extends outwards from the connection portion. The bottom of the connection portion does not extend to the end of the sealing portion.