Regional Through-Hole Filter Layout for Clogging Pressure Relief
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing filters, such as those described in Patent Document 1, suffer from durability issues due to clogging during filtration, which leads to localized pressure increases and damage on the outer peripheral portion of the filter, particularly when the center side becomes clogged.
Innovation Solution
The filter design incorporates larger second through-holes on the outer peripheral side, with a reduced opening area ratio compared to the smaller first through-holes, and a specific regional distribution to manage flow velocity and pressure, enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple first through-holes are periodically formed with smaller second through-holes dividing at least one first through-hole, then cell aggregate sampling capability is improved, but filter durability deteriorates due to clogging and localized pressure increases
Solution Approach 1:
The filter applies local quality by differentiating through-hole sizes across different regions: the first region (center) contains smaller first through-holes for precise cell aggregate sampling, while the second region (outer periphery) contains larger second through-holes to prevent clogging and reduce localized pressure. This regional differentiation allows each zone to perform its specific function optimally without compromising overall filter durability.
2Stress or pressure
If the outer periphery region is positioned on the center side relative to the outer periphery, then flow velocity and pressure distribution are improved, but structural complexity increases due to regional differentiation
Solution Approach 1:
The filter structure is segmented into distinct regions: a first region at the center and a second region at the outer periphery. Each region is assigned specific through-holes with different size characteristics. This segmentation simplifies the design by creating clear functional zones rather than attempting uniform through-hole distribution, making the pressure management strategy more effective while maintaining reasonable structural complexity.
Data Source
AI summary
A filter that includes a filter base portion having a first main surface and a second main surface opposite to the first main surface, the filter base portion defining multiple first through-holes and one or multiple second through-holes penetrating between the first main surface and the second main surface, the one or multiple second through-holes being larger in size than the multiple first through-holes. The filter base portion having a first region on a center side of a filter, a second region on an outer periphery side of the filter relative to the first region, and a third region between the second region and an outer periphery of the filter. The one or multiple second through-holes are in the second region, and a ratio of an opening area of the one or multiple second through-holes is less than a ratio of an opening area of the multiple first through-holes.