Balanced Air Filter Flange Seal for Uniform Gasket Compression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air filters with rectangular flanges experience non-uniform clamping forces due to the offset application of clamping pressure, leading to potential leakage and air bypass, as the clamping force is transferred laterally through the flange, causing uneven loading on the gasket and possible deflection along the short edges.
Innovation Solution
The air filter design features a filter flange assembly with a second and first flange coupled together, creating a spaced apart relationship between top and bottom surfaces to accommodate a shorter, more reliable gasket positioned equidistant from both short and long edges, ensuring uniform compression and reducing deflection, with a perimeter gasket located close to the outer edge to align with the clamping force, providing a balanced seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clamping force is applied to the area along the long edges of the rectangular flange, then the air filter can be securely mounted to the dust collector, but the clamping force is transferred laterally through the flange causing non-uniform loading on the gasket and potential leakage
Solution Approach 1:
The patent changes the flange shape from a conventional rectangular form to a circular form. This asymmetric geometric transformation eliminates the directional bias inherent in rectangular flanges, allowing clamping force to be applied uniformly around the entire perimeter of the gasket. The circular geometry ensures that clamping bars engage the flange at multiple equidistant points, distributing the sealing force evenly and eliminating the non-uniform loading that occurs with rectangular flanges where force is concentrated along specific edges.
2Ease of manufacture
If the gasket is positioned well inward of the flange perimeter, then the filter element can be accommodated in the recessed channel, but the offset between clamping force application area and gasket location causes flange deflection and non-uniform sealing force
Solution Approach 1:
The patent transitions from a two-dimensional planar flange design to a three-dimensional configuration by creating a spaced-apart relationship between the top and bottom surfaces of the circular flange. This dimensional change allows the gasket to be positioned on the bottom surface in direct alignment with the clamping force application area on the top surface, eliminating the lateral offset that causes deflection. The vertical spacing provides structural rigidity while maintaining force alignment, ensuring uniform sealing force distribution.
3Reliability
If a rectangular flange is used with clamping bars, then the air filter can be mounted to the dust collector, but excessive clamping force is required to compensate for non-uniform loading and ensure adequate sealing
Solution Approach 1:
The patent applies the principle of local quality by ensuring that the clamping force is applied locally and directly to the gasket position through the circular flange structure. Instead of relying on lateral force transfer through a rectangular flange, the circular geometry allows clamping bars to engage the flange at multiple points around its perimeter, with each engagement point directly transmitting force to the corresponding gasket region. This localized force application eliminates the need for excessive overall clamping force to compensate for non-uniform distribution.
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
This design achieves a more uniform and robust seal between the air filter and dust collector, reducing leakage, minimizing the need for excessive clamping force, and allowing for easier filter alignment, thus enhancing the operational efficiency and reliability of the dust collector.
Implementation Method 1
compressing a gasket mounted to the flange against the tube sheet, thereby creating a seal between the air filter and the tube sheet
Implementation Method 2
compressing a gasket mounted to the flange against the tube sheet, thereby creating a seal
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An air filter and dust collector are provided. In one embodiment, the air filter includes a filter element coupled at a first end to a end cap and at a second end to a first side of a rectangular filter flange assembly. The rectangular filter flange assembly includes a central aperture open to an interior region bounded by the filter element. A rectangular gasket is disposed on the second side of the filter flange assembly and circumscribes the central aperture.