Filtration Filter With Reservoir Projections To Prevent Drying
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Solution Overview
Problem
Existing filtration filters fail to effectively prevent the drying out of filtration targets, particularly substances derived from living organisms, which can lead to reduced activity and collection efficiency.
Innovation Solution
A filtration filter design featuring a reservoir part on its surface, defined by projections, that retains liquid and keeps filtration targets immersed, thereby preventing drying out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional filtration filter is used, then filtration of the liquid can be performed, but the filtration target tends to dry out and lose activity
Solution Approach 1:
The filtration filter is segmented into distinct functional regions: a reservoir part for liquid retention and a filtration part for target capture. This segmentation allows the reservoir to maintain a liquid environment while the filtration part captures targets, preventing drying out through localized liquid storage.
Solution Approach 2:
The invention introduces a vertical dimension by creating projections that extend from the first principal surface, forming three-dimensional reservoir spaces. This dimensional change transforms a flat filter surface into a structured system with depth, enabling liquid retention above the filtration surface.
2Productivity
If the filtration filter captures filtration targets efficiently, then collection rate improves, but the filtration target may dry out and reduce survival rate
Solution Approach 1:
The reservoir part is prepared in advance to retain liquid before filtration begins. This preliminary liquid retention ensures that the filtration environment remains humid from the start, preventing drying out during the filtration process while maintaining high collection rates.
Solution Approach 2:
The reservoir part acts as an intermediary between the liquid source and the filtration target. It maintains a liquid environment that mediates the interaction between the filtration target and the drying atmosphere, protecting targets while allowing efficient capture.
3Object-affected harmful factors
If projections are added to create reservoir parts, then liquid retention improves and drying is prevented, but device complexity increases
Solution Approach 1:
The reservoir part and filtration part are merged into a single integrated filter substrate structure. The projections forming the reservoir are directly formed on the filter substrate, eliminating the need for separate components and reducing overall device complexity despite adding functional complexity.
Solution Approach 2:
The filter substrate serves multiple functions: it acts as both the filtration medium with through-holes and the structural basis for forming reservoir projections. This multi-functionality reduces the number of separate components needed, offsetting the complexity added by the projections.
Data Source
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AI summary
Provided is a filtration filter that helps keep a filtration target from drying out. A filtration filter according to the present invention has a first principal surface, a second principal surface opposite the first principal surface, and a filter substrate defining through-holes extending from the first principal surface to the second principal surface. The filter substrate is a site on which a filtration target contained in a liquid is to be captured. When a cross section of the filtration filter is taken in a direction from the first principal surface to the second principal surface and along a line passing through adjacent ones of the through-holes, the filter substrate between two adjacent ones of the through-holes has a pair of projections. Projections of the pair of projections are provided on corresponding end portions on opposite sides in a width direction of the filter substrate and protrude from the first principal surface. The first principal surface and the pair of projections define a reservoir part in which some of the liquid is to be retained.