Filter Element With Central Tube Actuator
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Solution Overview
Problem
Conventional filter elements require frequent replacement to prevent flow restriction, leading to increased maintenance costs and reduced performance over time.
Innovation Solution
A filter element design featuring a central tube, pleated filter media, and end caps that are securely engaged to form a fluid-tight assembly, with radial fluid intake passages and flexible fingers to distribute stress, allowing for improved fluid flow and reduced impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filter elements are used, then initial filtering performance is achieved, but flow restriction increases over time requiring frequent replacement
Solution Approach 1:
The filter element is divided into a support structure with multiple discrete filter media elements that can be independently positioned and secured. This segmentation allows for optimized fluid distribution across multiple pathways, reducing localized clogging and extending service life before replacement is needed.
Solution Approach 2:
The invention transitions from a conventional single-layer or simple pleated filter to a three-dimensional array of filter media elements mounted on a support structure. This dimensional change creates multiple fluid pathways and increases the effective filtering surface area, delaying the point at which flow restriction becomes problematic.
2Reliability
If filter elements are replaced frequently to maintain performance, then flow restriction is minimized, but maintenance costs increase
Solution Approach 1:
The support structure is designed with pre-formed features including circumferential ridges, grooves, and attachment mechanisms that are manufactured in advance. These preliminary structural actions enable easier installation and removal of filter media elements, reducing maintenance time and cost while allowing the extended service life to be realized.
3Ease of manufacture
If a simple filter structure is used, then manufacturing is easier, but stress distribution is poor leading to premature failure
Solution Approach 1:
The support structure incorporates locally varied features including circumferential ridges at specific positions, grooves for media retention, and strategically placed attachment points. These localized structural modifications distribute mechanical stress more evenly across the filter element during operation and maintenance, preventing premature failure at weak points while maintaining overall structural simplicity.
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 performance and longevity of filter elements by reducing the need for frequent replacements, maintaining efficient fluid flow and minimizing flow restriction, thereby extending the operational life and reducing maintenance costs.
Implementation Method 1
filtering media which remove impurities from a fluid, such as, for example, oil or fuel that passes through a filter media
Data Source
AI summary
A filter element comprising an annular filtering media defining first and second axial ends and surrounding an interior area having a central axis, a first end cap sealing attached to said first axial end of said filter media, a second annular end cap sealing attached to said second axial end of said filter media, said second end cap defining a central opening, and a central tube extending from the opening of the second end cap, wherein the central tube includes an actuator exclusive of keys, free ends, or projections.