Conical Filter Element Mounting for Uniform Seal Loading
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Solution Overview
Problem
Current filter systems face challenges in reducing maintenance time, ensuring consistent seal loading, and optimizing filter element spacing and size, which can lead to fluid leaks, premature seal damage, and increased pressure loss due to uneven forces and tight packing of filter elements.
Innovation Solution
The development of new filter elements and mounting systems that include a frustoconical tube of filter media with a tapered seal member, allowing for improved seal loading and reduced pressure loss, along with a mounting yoke configuration that redistributes forces for uniform sealing pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If filter elements are packed tightly and closely together to increase filtration capacity, then the quantity of filter elements increases, but flow space between adjacent filter elements is limited which increases pressure drop across the system
Solution Approach 1:
The patent applies curved surfaces and aerodynamic fairings at the upstream ends of filter elements to streamline flow patterns. The curved geometry reduces flow separation and turbulence when air passes between closely packed filter elements, thereby reducing pressure drop despite tight packing configuration
Solution Approach 2:
The patent modifies the geometric parameters of filter elements including their spacing, orientation, and surface curvature. By adjusting these parameters and incorporating fairings, the system achieves optimal balance between packing density and flow resistance, reducing turbulence-induced pressure losses
2Ease of operation
If filter elements are mounted in a cantilevered orientation with vertical tube sheet, then mounting simplicity is improved, but uneven forces are generated on sealing elements due to gravity causing non-parallel sealing forces
Solution Approach 1:
The patent incorporates spring-loaded mounting mechanisms that apply counteracting forces to compensate for gravitational effects. The springs provide pre-loaded sealing pressure that maintains consistent seal contact despite the cantilevered orientation and gravitational pull, ensuring uniform sealing forces across all seal elements
Solution Approach 2:
The patent changes the mounting parameters by introducing adjustable spring loads and modified clamp mechanisms that can compensate for gravitational forces. This allows the sealing pressure to be maintained at optimal levels despite the vertical cantilevered configuration
3Ease of manufacture
If standard cylindrical filter elements are used, then manufacturing simplicity is maintained, but flow separation and turbulence occur around and through the filter elements increasing pressure loss
Solution Approach 1:
The patent transitions from cylindrical to conical filter element geometry with curved surfaces. The conical shape with optimized apex angles reduces flow separation and turbulence at the filter element entrances and exits, thereby reducing pressure losses while maintaining manufacturability through standard forming processes
4Device complexity
If conventional seal loading methods are used without visual inspection capability, then mounting mechanism simplicity is maintained, but it is impossible to visually inspect the seal compression degree resulting in inconsistent sealing
Solution Approach 1:
The patent incorporates visual indicators such as color-coded markers or transparent sections on the seal members that change appearance or become visible when proper compression is achieved. This allows operators to visually confirm adequate seal loading without adding complex measurement devices to the mounting mechanism
Data Source
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AI summary
Filter elements, filter mounting systems, filter systems, methods of servicing filter systems, and methods of mounting filter elements are provided herein. The mounting system may include a quick attach attachment member that can be both axially slid along a mounting shank as well as threadedly engaged therewith. Torque limiting features may be provided to limit the amount of loading that may be provided by an attachment member to a filter element. Identifiers of appropriate tightening of attachment members may be provided. Clocking features and mechanisms for better balancing loading on seal members may be provided.