Filter Cartridge Asymmetric Retaining Member
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Solution Overview
Problem
Non-genuine filter cartridges for internal combustion engines often fail to adequately remove particulate contamination, leading to potential engine damage due to misalignment and improper sealing, which can result in increased pressure drops and reduced engine performance.
Innovation Solution
A liquid filtration system with a filter cartridge and head that includes a shell housing and filter element, featuring a retaining member that prevents rotational and translational movement, ensuring proper alignment and sealing through anti-rotation features and sealing members, thereby preventing the use of incorrect or non-genuine cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a filter cartridge is made removable and replaceable, then ease of maintenance and operation is improved, but reliability deteriorates due to potential use of non-genuine cartridges that do not provide adequate filtration
Solution Approach 1:
The filter element includes an asymmetric retaining member with a specific geometric shape that corresponds to a matching asymmetric feature in the shell housing. This asymmetric configuration creates a unique fit that only genuine filter cartridges possess, preventing the use of non-genuine cartridges while maintaining ease of replacement for authorized users.
2Reliability
If the filter element is securely retained in the shell housing, then reliability of filtration is improved, but device complexity increases due to additional retaining structures
Solution Approach 1:
The retaining member is integrated as an integral part of the endcap structure, which itself is coupled to the media pack. This merging of functions (retention + structural support + sealing) into a single integrated component achieves secure retention without adding separate complex retaining mechanisms, thereby maintaining simplicity while ensuring reliability.
3Manufacturing precision
If the filter cartridge is designed with precise alignment features, then manufacturing precision is improved, but ease of manufacture deteriorates due to tighter tolerances and more complex assembly
Solution Approach 1:
The retaining member and groove are pre-configured in specific orientations during manufacturing, establishing the correct alignment geometry before final assembly. This preliminary configuration of alignment features ensures precise positioning is achieved automatically during cartridge installation, reducing the need for complex adjustment procedures and tight assembly tolerances.
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 system effectively maintains engine performance by ensuring proper filtration and reducing the risk of engine damage by ensuring correct alignment and sealing, thus preventing the use of non-genuine cartridges that may not provide adequate filtration.
Implementation Method 1
The filter element includes a media pack configured to filter matter from a fluid flowing therethrough
Implementation Method 2
The retaining member is configured to prevent translational movement of the filter element out of the shell housing
Implementation Method 3
The shell housing is configured to limit rotation of the endcap relative to the shell housing
Data Source
AI summary
A liquid filtration system is provided. The filtration system includes a filter head and a filter cartridge configured to be removably coupled to the filter head. The filter cartridge includes a shell housing and a filter element. The shell housing defines a first housing end, a second housing end, and a housing sidewall extending between the first housing end and the second housing end. The filter element is received within the shell housing and removably coupled to the shell housing. The filter element includes a media pack configured to filter matter from a fluid flowing therethrough and an endcap coupled to an end of the media pack. The endcap comprising a retaining member engaged with the shell housing.