Filter Assembly with Multiple Seal Elements for Fuel Systems
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Solution Overview
Problem
Existing fuel filtration systems for internal combustion engines are difficult to service and can result in fluid leaks, requiring specialized tools and posing risks to operators due to the complexity of removing and replacing filter elements without spilling or draining the fluid effectively.
Innovation Solution
A fluid filtration system design featuring a filter housing body with a center post and filter element that includes axial and radial sealing members to form sealing engagements, allowing for self-draining and clean servicing by compressing sealing members against the center post, preventing fluid leakage during filter element removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional filter elements are used in fuel filtration systems, then filtration performance can be achieved, but fluid leakage occurs during filter removal and servicing
Solution Approach 1:
The filter element is segmented into multiple sealing zones with different sealing members (axial sealing member at the top end, radial sealing member at the bottom end) that perform different sealing functions. This segmentation allows each sealing member to be optimized for its specific location and function, preventing fluid leakage during filter removal while maintaining ease of servicing.
Solution Approach 2:
Different sealing members are applied at different locations of the filter element based on local requirements. The axial sealing member with circumferential sealing lips is positioned at the top end where axial sealing is needed, while the radial sealing member is positioned at the bottom end where radial sealing is required. This local quality approach ensures optimal sealing performance at each location without compromising overall servicing ease.
2Ease of repair
If filter elements are removed from fuel filtration systems, then filter maintenance can be performed, but fluid spillage and contamination of operators and components occurs
Solution Approach 1:
The sealing members are designed to maintain sealing engagement until the final moment of filter removal. The axial sealing member's circumferential sealing lips and the radial sealing member's engagement features create preliminary anti-action against fluid leakage, allowing maintenance personnel to remove and service filters without experiencing fluid spillage or contamination of operators and surrounding components.
3Reliability
If specialized tools are used for filter removal, then fluid leakage can be prevented, but device complexity and operational difficulty increase
Solution Approach 1:
The filter element's sealing members are designed to maintain sealing engagement during the entire removal process without requiring specialized tools. The axial sealing member and radial sealing member work together to create a self-service system where the filter element itself prevents fluid leakage during removal, eliminating the need for complex specialized tools and reducing device complexity.
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
Enables safe and efficient removal of filter elements without fluid spillage, ensuring clean servicing and self-draining capabilities, reducing the need for specialized tools and minimizing operational risks.
Implementation Method 1
The first axial sealing member is configured to compress against an axial center post of a fluid filtration system to form a first sealing engagement
Implementation Method 2
The first radial sealing member contacts the third inner flange
Data Source
AI summary
A filter element is provided. The filter element includes a media pack, a first endplate, and a second endplate. The media pack defines a hollow cavity that extends along a center axis. The first endplate is coupled to the media pack and includes a first endplate surface, a first inner flange, a second inner flange, and a first axial sealing member. The first inner flange extends axially away from the first endplate into the hollow cavity of the media pack. The second inner flange defines an L-shaped cross-section and extends radially inward from the first inner flange. The first axial sealing member is positioned within a groove defined by the first inner flange and the second inner flange. The second endplate is coupled to the media pack opposite to the first endplate and includes a second endplate surface, a third inner flange, and a first radial sealing member. The first radial sealing member contacts the third inner flange.