Filter Element Asymmetric Mounting for Authorization Control
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Solution Overview
Problem
Existing filter devices face challenges in ensuring that only authorized filter elements are used, as the use of external or imitative elements can impair filter performance and cause damage.
Innovation Solution
A ring filter element with a dirt pot and a protruding nozzle-shaped pin is designed to engage with a channel on the filter housing pot, ensuring that only compatible and authorized filter elements can be used, thereby preventing damage and maintaining filter performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If filter elements from external brands or imitations are used, then production costs are reduced, but filter performance is impaired and damage can be caused
Solution Approach 1:
The filter element employs an asymmetric design where the circumferential groove is positioned exclusively on one side of the filter element body, and the corresponding protrusion is located at a specific angular position on the sealing ring. This asymmetric configuration creates a unique mounting orientation that must be aligned with the corresponding asymmetric feature in the filter housing, preventing installation of incompatible or counterfeit filter elements regardless of their source.
Solution Approach 2:
The invention introduces intermediate geometric features (the circumferential groove and the protrusion) that act as mediators between the filter element and the filter housing. These intermediate features serve as mechanical keys that must match between the filter element and the housing recess, creating a verification mechanism that ensures only authorized, correctly-designed filter elements can be properly installed and function reliably.
2Ease of manufacture
If filter elements from external brands or imitations are used, then cost is reduced, but damage can be caused to the filter device
Solution Approach 1:
The asymmetric positioning of the circumferential groove and the angularly-offset protrusion creates a mechanical interlock that prevents incorrect filter elements from being installed. This asymmetric design ensures that only filter elements with the exact matching groove and protrusion configuration can be properly mounted, thereby preventing installation of substandard or incompatible elements that could cause damage to the filter device.
Solution Approach 2:
The invention implements preliminary anti-action by pre-configuring the filter element with asymmetric mounting features that actively prevent the harmful action of installing incorrect filter elements. The asymmetric groove and protrusion create a mechanical barrier that stops counterfeit or incompatible filter elements from being installed in the first place, rather than attempting to prevent damage after installation has occurred.
3Ease of manufacture
If a standardized filter element design is used, then manufacturing cost is reduced, but the ability to ensure authorized element use is weakened
Solution Approach 1:
The invention introduces asymmetric features (circumferential groove on one side only, protrusion at specific angular position) into an otherwise relatively simple filter element design. These asymmetric features add minimal manufacturing complexity while providing strong authorization control, as they create a unique mechanical signature that must be matched by the filter housing, thereby ensuring only authorized filter elements can be installed.
Solution Approach 2:
The invention applies local quality by concentrating the authorization control function into specific localized features (the circumferential groove and the protrusion) rather than requiring complex design changes throughout the entire filter element. This allows the majority of the filter element to maintain a simple, cost-effective design while the localized asymmetric features provide the necessary authorization verification capability.
Data Source
AI summary
A filter device includes a functional element and a filter element arranged in a filter housing. The filter element includes an enclosure positioned about a central axis and below filter material of the filter element. The enclosure includes an enclosure wall that defines an inner volume that is in fluid communication with an orifice of the functional element when the filter element is positioned over the functional element.