Reusable Water Filter Assembly for Leak-Free Cartridge Exchange
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Solution Overview
Problem
Conventional water treatment systems generate significant plastic waste due to disposable filter cartridges, and there is a need for improved cartridge location and engagement during replacement to prevent leaks and enhance user experience.
Innovation Solution
A reusable water treatment housing with disposable filter media inserts, featuring a filter head and reusable sump assembly with alignment structures, tactile and visual indicators, and noncircular spout connections to facilitate easy and leak-proof cartridge replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable filter cartridges are used, then filtration function is provided, but plastic waste is generated
Solution Approach 1:
The filter assembly is segmented into two distinct parts: a reusable filter housing and disposable filter cartridges. This segmentation allows the housing to be retained while only the consumable filtering media is replaced, reducing plastic waste compared to replacing the entire assembly.
Solution Approach 2:
The invention enables recovery and reuse of the filter housing while discarding only the exhausted filter cartridges. The housing is designed with removable cartridge holders that allow easy extraction of spent cartridges and reinstallation of fresh ones, maximizing resource utilization.
2Ease of operation
If filter cartridge is replaced manually, then cartridge exchange is possible, but water leaks may occur
Solution Approach 1:
The filter housing is pre-equipped with automatic shutoff valves and sealed cartridge holders before cartridge replacement. When the cartridge is removed, the shutoff valve automatically closes to prevent water leakage, eliminating the need for manual valve operation during the exchange process.
3Ease of operation
If filter cartridge location is improved, then user-friendly exchange is enhanced, but device complexity increases
Solution Approach 1:
The cartridge holders feature asymmetric geometric designs with specific protrusions and corresponding recesses that guide the cartridge into the correct position. This asymmetric geometry provides intuitive manual alignment without requiring complex mechanical guidance systems.
Solution Approach 2:
The cartridge holders are designed to self-align and self-secure the filter cartridge through their geometric configuration. The holders automatically position the cartridge correctly during insertion and provide tactile feedback when properly engaged, eliminating the need for external alignment tools or complex adjustment mechanisms.
Data Source
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AI summary
A water treatment assembly is provided, including a filter head (12) configured for connection to a water supply line, the filter head including a rotatable shutoff valve (62), a sump assembly (30) releasably connected to the filter head, the sump assembly including a sump cap (32) releasably attached to a sump body (34) and defining an interior chamber (38), and the sump cap having cap ports (74, 76) in fluid communication with complementary head ports (68, 70) in the filter head, and a filter insert (40) releasably enclosed within the interior chamber, the filter insert having a filter media portion (42) and an endcap (46) secured to the media portion, the endcap having at least one port (86) configured for being in fluid communication with one of the cap ports and one of the head ports.