Filter Cartridge Adapter With Threaded Mounting for Leak Prevention
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Solution Overview
Problem
Existing filter cartridges for air filter devices require time-consuming and error-prone manual assembly using bayonet connections, which can lead to leaks and malfunctions due to incorrect installation and gravitational pressure on the seal.
Innovation Solution
A screw thread connection is introduced through an adapter element that connects the filter cartridge to the base plate, supplemented by bayonet or form-fit couplings, allowing for precise alignment and secure mounting, reducing the risk of accidental disconnection and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bayonet connection is used to assemble filter cartridges, then the connection can be made quickly, but the assembly process becomes time-consuming and error-prone due to manual insertion and torque application requirements
Solution Approach 1:
The patent replaces the manual bayonet connection mechanism with an automated screwing mechanism. The screwing mechanism includes a screwing element that automatically engages with a nut element, eliminating the need for manual insertion and torque application. This substitution of mechanical systems resolves the contradiction by maintaining quick assembly while improving precision through automated control.
Solution Approach 2:
The screwing mechanism is designed to be self-aligning and self-securing. The screwing element automatically finds its position in the nut element and secures the connection without requiring external torque application or precise manual positioning. This self-service characteristic resolves the contradiction by enabling both rapid and precise assembly through automatic engagement.
2Productivity
If bayonet connection is used to secure filter cartridges, then the connection can be made efficiently, but the axial sealing becomes compromised over time due to gravitational pressure creating narrow gaps
Solution Approach 1:
The patent introduces a dynamic sealing mechanism that adapts to gravitational forces. The sealing element is designed to move or adjust its position in response to the weight of the filter cartridge, maintaining constant contact and sealing pressure. This dynamic response resolves the contradiction by preserving sealing performance under gravitational load while maintaining assembly efficiency.
Solution Approach 2:
The sealing mechanism includes preliminary design features that counteract gravitational effects before they can compromise the seal. The sealing element is positioned and constrained in a way that pre-compensates for the narrowing gap effect, preventing leakage before it occurs. This preliminary anti-action resolves the contradiction by maintaining sealing reliability without sacrificing assembly efficiency.
3Ease of manufacture
If manual bayonet assembly is used, then the connection process can be completed, but the process becomes error-prone with no clear feedback on correct insertion
Solution Approach 1:
The screwing mechanism provides immediate and clear feedback on insertion status. As the screwing element engages with the nut element, the user can feel and see the progress of the connection, with clear indicators when the correct position is reached. This feedback mechanism resolves the contradiction by ensuring both complete assembly and high installation accuracy through tangible progression indicators.
Solution Approach 2:
The patent incorporates visual indicators that change appearance during the assembly process. Color-changing elements or visual markers provide clear feedback on the insertion status, showing when the correct position is achieved. This visual feedback resolves the contradiction by making assembly completion and accuracy immediately apparent to the user.
Data Source
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AI summary
In order to further develop an air filter device (100), comprising a base plate (10) with a plurality of spaced-apart flow openings (12a, 12b, 12c, 12d) and a plurality of filter cartridges (20a, 20b, 20c, 20d; 20a', 20b', 20c', 20d') each having a filter medium body (50) comprising at least one gas filter medium, - wherein the base plate (10) comprises adjacent to the flow openings (12a, 12b, 12c, 12d) in each case at least one mounting device (14, 16; 16'; 16") for mounting one filter cartridge (20a, 20b, 20c, 20d; 20a', 20b', 20c', 20d') each on the base plate (10), - wherein the filter cartridges (20a, 20b, 20c, 20d; 20a', 20b', 20c', 20d') each have at least one counter mounting means (22, 24; 24') corresponding to the mounting device (14, 16; 16'; 16"), which counter mounting means (22) can be brought into operative connection with the respective mounting device (14, 16; 16'; 16") of the base plate (10), in such way, that that assembly of the filter cartridge (20a, 20b, 20c, 20d; 20a', 20b', 20c', 20d') to the base plate (10) is simplified and efficiency of assembly is increased, it is proposed that the mounting device (14) is designed as a screw thread connection means (14) and the corresponding counter mounting means (22) is designed as a counter screw thread connection means (22), wherein - the screw thread connection means (14) and the counter screw thread connection means (22) form together a screw thread connection (14, 22), and - wherein the screw thread connection (14, 22) can be tightened or loosened by applying rotational movement to the screw thread connection means (14).