Water Filter Housing Sieve for Air Venting and Media Retention
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Solution Overview
Problem
Existing gravity flow water filtration cartridges face issues with air trapping due to granular filtration media, limiting contaminant removal capability and water flow rates, as larger vent holes are required to vent air, which in turn allows smaller filtration media to be swept out, reducing effectiveness.
Innovation Solution
A novel sieve system with an air vent and shroud, utilizing an air-permeable material like a hydrophobic membrane to manage air venting and retain smaller filtration media, ensuring effective air release and containment of finer carbon particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If larger vent holes are used to vent air, then air can escape more effectively, but smaller filtration media can be swept out through the vents
Solution Approach 1:
The vent hole is segmented into two functional zones: an upper portion that allows air to escape and a lower portion covered by a screen that prevents carbon particles from being swept out. This segmentation resolves the contradiction by allowing both effective air venting and media containment through spatial division of the vent structure.
Solution Approach 2:
Different portions of the vent hole have different properties: the upper portion is open for air flow while the lower portion is screened for particle containment. This local differentiation of quality allows the single vent structure to simultaneously achieve both air venting effectiveness and filtration media containment.
2Reliability
If smaller filtration media is used, then contaminant removal capability is improved, but the media is difficult to retain in the cartridge housing
Solution Approach 1:
A screen is introduced as an intermediary element between the vent hole and the filtration media. This screen acts as a mediator that allows air to pass through while blocking carbon particles, enabling the use of smaller filtration media without worrying about them being swept out through the vents.
3Productivity
If air is not properly vented, then water flow rate decreases or stops, but larger vent holes allow smaller media to escape
Solution Approach 1:
The vent structure is segmented into air-permeable upper portion and screened lower portion, allowing simultaneous achievement of high water flow rates through effective air venting and prevention of filtration media loss through the screen barrier.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables improved contaminant removal and maintains high water flow rates by effectively venting air and retaining smaller filtration media, enhancing the filtration capability beyond traditional systems.
Implementation Method 1
An air permeable material covers the opening of the air vent. In another embodiment, the air permeable material is selected from the group consisting of a screen, a woven, a nonwoven or a membrane covers the opening of the vent tube. In another embodiment, the air permeable membrane is hydrophobic.
Data Source
AI summary
A gravity flow water filtration cartridge with a novel sieve system. The sieve system comprises an air vent and a shroud. The sieve system is attached or welded onto a housing bottom or barrel. An air permeable material covers the opening of the air vent.