Water Pitcher Filter Seating Structure to Prevent Airlock
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Solution Overview
Problem
Existing water filtration systems face issues with proper alignment and seating of filter cartridges, leading to potential contamination and reduced filtration efficiency due to misalignment, improper seating, airlock, and media compaction.
Innovation Solution
A device is integrated into the water pitcher that ensures proper seating and retention of the filter cartridge, directs untreated water away from air vents to prevent airlock and media compaction, and provides sensory feedback for correct alignment and seating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter cartridge is simply dropped into the candle, then the installation process is simple, but proper alignment and seating cannot be achieved
Solution Approach 1:
The patent incorporates a flume structure that preliminarily directs water flow along the outer surface of the filter cartridge before it is fully inserted into the candle. This preliminary action ensures proper alignment and seating by guiding the cartridge into the correct position as water flows through the system, eliminating the need for manual alignment efforts.
Solution Approach 2:
The flume acts as an intermediary element between the water source and the filter cartridge. It mediates the interaction by directing water flow in a specific pattern that promotes proper cartridge seating and alignment, serving as a mechanical guide that facilitates correct installation without requiring user intervention.
2Productivity
If water flows directly onto the air vents, then air can escape during filling, but airlock and media compaction occur
Solution Approach 1:
The flume creates localized water flow paths that direct water along the outer surface of the filter cartridge and away from the air vents at the top. This local quality control ensures that different areas of the cartridge receive different treatment: the outer surface receives water flow for sealing, while the air vents remain protected from direct impact, preventing airlock and media compaction.
Solution Approach 2:
Instead of allowing water to flow directly onto the air vents (conventional approach), the flume inverts the flow direction by channeling water along the outer surface first. This inverted approach ensures air can escape during filling while preventing the harmful effects of direct water impact on the air vents and filtering media.
3Ease of operation
If the filter cartridge is not properly seated, then easy installation is maintained, but water bypasses the filter causing contamination
Solution Approach 1:
The flume structure enables the filter cartridge to self-align and self-seat properly during the installation process. By directing water flow along its outer surface, the flume creates forces that naturally guide the cartridge into the correct position and ensure proper sealing, making the system self-correcting without requiring user expertise or manual adjustment.
Data Source
AI summary
In one example, a pitcher is provided that includes a chassis in which an untreated water reservoir is received. The untreated water reservoir has a candle that defines a receptacle with a fluid inlet and a fluid outlet, where the fluid outlet is arranged for fluid communication with the treated water reservoir, and the receptacle is configured to receive a filter cartridge. The candle also includes a filter seat that cooperates with the filter cartridge to form a substantially fluid-tight seal when the filter cartridge is positioned in a sealing range defined by the candle. The pitcher also includes a structural element that is connected to a portion of the pitcher and has a protruding portion that is located near the filter cartridge when the filter cartridge resides in the sealing range.