Filter Element Asymmetric End Cap Geometry Prevents Incorrect Installation
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Solution Overview
Problem
Filter devices experience reduced performance or malfunction when unsuitable filter elements are used, leading to economic losses, especially in expensive technical systems, due to the lack of operational safety and compatibility.
Innovation Solution
A filter element design featuring end caps with non-round inner and outer edges, such as polygons or Reuleaux polygons, which create a unique connection geometry that ensures compatibility with specific filter devices, forming a key/lock system to prevent incorrect installation, combined with elastomer seals and a bypass valve arrangement for enhanced operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard round end caps are used in filter elements, then manufacturing is simple and cost-effective, but operational reliability is reduced due to inability to prevent incorrect installation
Solution Approach 1:
The end caps are designed with non-round, asymmetric connection geometries (polygonal or Reuleaux polygon shapes) that differ between the first and second end caps. This asymmetry creates a key/lock system where only the correct filter element can be installed in the filter device, preventing incorrect installation and ensuring operational reliability.
2Reliability
If non-round end caps with unique connection geometries are used, then installation protection and compatibility are improved, but manufacturing complexity increases
Solution Approach 1:
The asymmetric non-round connection geometries on the end caps enable installation protection by ensuring that only filter elements with matching geometries can be installed. While this increases manufacturing complexity compared to standard round caps, it prevents costly malfunctions and ensures compatibility.
Solution Approach 2:
The connection geometry on one end cap is designed to be a geometric counterpart (copy) of the connection area on the filter device, creating a precise key/lock relationship. This copying approach ensures exact geometric correspondence for proper installation while maintaining manufacturing feasibility through standardized polygonal or Reuleaux polygon shapes.
3Adaptability or versatility
If geometric correspondence is required for connection, then compatibility with specific filter devices is ensured, but ease of operation is reduced due to restricted interchangeability
Solution Approach 1:
By designing the end caps with asymmetric non-round connection geometries that are specific to each filter device type, the system ensures that only compatible filter elements can be installed. This restricts interchangeability to prevent incorrect installations, thereby improving adaptability and compatibility with specific filter devices.
Data Source
Figure 1~2
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AI summary
The invention relates to a filter element consisting of at least two end caps (3, 5), between which extends a filter material (7), characterized in that the end caps (3, 5) have connection geometries (11, 13) for the connection to third components, the connection geometries differing from one another.