Filter Cartridge Valve Layout for Cleaner Replacement and Pressure Tuning
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Solution Overview
Problem
Existing filter assemblies suffer from high maintenance costs due to contamination of the obturator in the closed area, which remains soiled after cartridge replacement, and integration of safety valves into the cartridge leading to non-incinerable components.
Innovation Solution
A filter cartridge design with a removable obturator element and valve seat, integrated with a separate return mechanism that remains part of the permanent assembly, allowing adjustable valve opening pressure without altering the permanent parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the obturator and valve seat are integrated into the filter cartridge, then the valve can be replaced with the cartridge, but the obturator becomes contaminated and remains soiled even after replacement
Solution Approach 1:
The valve system is segmented into two parts: the obturator (valve closure element) is integrated with the filter cartridge and replaced together, while the valve seat remains as a separate permanent component in the filter housing. This segmentation allows the obturator to be replaced along with the cartridge, eliminating contamination issues while maintaining ease of replacement.
2Ease of repair
If the safety valve is fully integrated into the filter cartridge, then the valve is replaced with the cartridge, but the cartridge becomes non-incinerable due to metallic parts
Solution Approach 1:
By separating the valve components, the obturator can be made of incinerable materials (plastic, polymer) while the valve seat in the permanent housing can contain necessary metallic elements for durability and function. This allows the filter cartridge to remain incinerable while still providing valve functionality.
Solution Approach 2:
The obturator is designed as a disposable component integrated with the filter cartridge, made from incinerable materials that can be discarded with the cartridge after use, eliminating the need for expensive metallic components in the replaceable portion.
3Stability of the object's composition
If the valve opening pressure is fixed in the permanent part, then the assembly is stable, but adaptation to different pressure thresholds requires modification of the permanent part
Solution Approach 1:
The valve system is made adjustable by allowing the obturator dimensions to be varied while keeping the valve seat in the permanent housing fixed. This enables dynamic adaptation to different pressure thresholds by simply changing the obturator (integrated with the cartridge) without modifying the permanent assembly, combining stability with adaptability.
Data Source
Figure 1
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AI summary
The present invention relates to a filter cartridge (7) that can be fitted to a filter assembly (1) for filtering at least one fluid (F), the filter cartridge (7) being configured to be removably housed in a filter body (2) of the filter assembly (1), the filter cartridge (7) comprising: - a first and a second flange (11; 12), - a filter medium (13) having a tubular light (14) to surround the tube (6) and extending between the first and second flanges (11;12), the first flange (11) comprising a valve seat (15) through which at least one orifice (16) communicates with the tubular lumen (14), and - a valve obturator element (20) integral with the first flange (11) so as to cooperate with the valve seat (15), the obturator element (20) being configured to occupy at least two positions, namely a closed position, in which the obturator element (20) obturates the valve seat (15) and at least one open position in which the obturator element (20) allows the passage of fluid (F) through the valve seat (15), a return member (21), separate from the filter cartridge (7), being configured to act by returning the obturator element (20) to the closed position.;