Filter Element Positioning Device for Reliable Installation
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Solution Overview
Problem
Filter devices often suffer from reduced or no performance due to the use of inappropriate filter elements, leading to potential malfunctions and economic losses in expensive technical equipment.
Innovation Solution
A filter element with a positioning device on one end cap that engages with a corresponding positioning element, forming a key-lock system to ensure only correctly suited filter elements are used, along with an RFID tag for secure data storage and identification, ensuring proper alignment and preventing the use of unsuitable filter elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If filter elements are made replaceable and simple to install, then ease of operation is improved, but reliability deteriorates due to risk of installing incompatible filter elements
Solution Approach 1:
The patent applies asymmetry by providing a positioning device with a guide web having a specific geometric shape that must match a corresponding guide channel in the enclosure. This asymmetric design ensures that only filter elements with the correct positioning features can be installed, preventing incompatible elements from being fitted while maintaining simple replacement procedures
Solution Approach 2:
The positioning device acts as an intermediary between the filter element and the enclosure. It includes a guide web that engages with a guide channel, serving as a mechanical mediator that ensures proper alignment and prevents installation of incompatible filter elements. This intermediary mechanism bridges the simplicity of replacement with the reliability of correct installation
2Reliability
If positioning devices are added to ensure correct filter element installation, then reliability is improved, but device complexity increases
Solution Approach 1:
The positioning device is segmented into distinct functional components: a positioning element on the filter element (such as a guide web) and a corresponding positioning element in the enclosure (such as a guide channel). This segmentation allows each component to be simple in design while collectively providing reliable positioning and compatibility verification
Solution Approach 2:
The patent applies local quality by providing positioning features only at specific locations where they are needed for compatibility verification, rather than making the entire filter element complex. The guide web and guide channel are localized features that engage at specific points to ensure correct installation without adding overall structural complexity
Data Source
AI summary
A filter device with a removable termination part (81; 82) and a housing (3) that receives a replaceable filter element (5) having two end caps (25,47). Between the end caps, a filter material (12) extends. A positioning device (65) is arranged between the termination part (81; 82) and one end cap (47). The positioning device positions the filter element (5) within the housing (3), at least when viewed in the circumferential direction of the filter element, in interaction with at least one corresponding positioning element (71) of the end cap (47).