Coalescing Filter Element with Annular Seal for Assembly
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Solution Overview
Problem
Conventional filter cartridges with concentrically arranged coalescing and particulate filter medias complicate assembly due to the complexity of arranging and sealing these elements effectively.
Innovation Solution
A filter element design featuring a first and second end cap, a ring of filter media, and an annular seal, where the filter media circumscribes a central cavity and includes a cylindrical collar with an annular seal extending axially, allowing for easier assembly and effective separation of water and particulates from the fuel stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two filter elements with concentrically arranged coalescing and particulate filter medias are used, then fluid separation effectiveness is improved, but assembly complexity increases
Solution Approach 1:
The patent combines the coalescing filter media and particulate filter media into a single integrated filter element structure. The coalescing media is positioned at an outer periphery while the particulate media is positioned at an inner periphery, both within the same filter element housing, eliminating the need for separate concentric filter elements and simplifying assembly while maintaining effective fluid separation
Solution Approach 2:
The filter element is segmented into distinct functional zones with coalescing media at the outer periphery and particulate media at the inner periphery. This segmentation allows each media type to perform its specific function independently while being part of a unified structure, resolving the contradiction between separation effectiveness and assembly complexity
2Reliability
If concentrically arranged filter medias are used with space between them for fluid drainage, then water separation capability is improved, but manufacturing and assembly difficulty increase
Solution Approach 1:
The patent transitions from a concentric radial arrangement to a planar layered arrangement where coalescing and particulate media are positioned side-by-side in the same axial plane. The drainage space is integrated into this planar structure rather than requiring radial clearance, simplifying manufacturing and assembly while maintaining water separation capability through the coalescing media's inherent drainage properties
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 design enhances the assembly process and ensures effective separation of water and particulates, providing a fluid-tight seal and efficient filtration while simplifying the assembly of filter cartridges.
Implementation Method 1
a filter element having a filter media for separating water and removing particulates within a fuel stream passing through the filter media
Implementation Method 2
the filter element used for coalescing the fluid may include a coarse media
Data Source
AI summary
One aspect of the disclosure provides a filter element including a first end cap, a second end cap, a ring of filter media and an annular seal. The first end cap defines a cylindrical collar that circumscribes a first central opening and includes a substantially planar first outer surface that extends radially outward from the cylindrical collar to an outer peripheral edge. The second end cap defines a second central opening substantially coaxial with the first central opening. The ring of filter media is disposed between the first end cap and the second end cap, and circumscribes a central cavity in fluid communication with the first central opening and the second central opening. The annular seal is disposed upon the first outer surface of the first end cap and around the cylindrical collar. The annular seal extends axially way from the first outer surface.