Variable-Thickness Filtration Filter for Pipette-Pressure Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filtration filters face issues with durability, particularly when subjected to pressure from pipettes during filtration, leading to stress concentration and potential breakage.
Innovation Solution
The filtration filter is designed with a convex shape and varying film thickness, where the center has a larger film thickness than the rim, and is housed within a device with matching convex and concave sections to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the filter section has a uniform thin film thickness, then the filtration area is maximized and filtration efficiency is improved, but the durability and resistance to pipette pressure are reduced
Solution Approach 1:
The filter section employs non-uniform film thickness with different regions having different thicknesses. The center region has a first film thickness while the peripheral region has a second film thickness that is different from the first. This allows the peripheral region to provide structural strength and durability to resist pipette pressure, while the center region maintains sufficient thickness for effective filtration, thus resolving the contradiction between filtration efficiency and durability.
2Reliability
If the film thickness is increased uniformly across the filter section, then durability is improved, but the filtration area is reduced and filtration time increases
Solution Approach 1:
Instead of uniformly increasing the film thickness across the entire filter section, the invention applies different thicknesses to different regions. The peripheral region has increased thickness to provide durability and structural support, while the center filtration region maintains an optimized thickness that balances filtration efficiency with adequate strength. This localized differentiation resolves the contradiction by providing strength where needed without sacrificing overall filtration performance.
3Reliability
If the filter section is made with varying film thickness, then stress is dispersed and durability is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention changes the physical parameter of film thickness from a uniform value to a spatially varying value across the filter section. By controlling the film thickness parameter to differ between the center region and peripheral region, the design achieves stress dispersion and improved durability. This parameter change can be implemented through various manufacturing techniques such as controlled deposition or molding, balancing the durability benefit with manageable manufacturing complexity.
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
This configuration improves durability and reduces filtration time by dispersing stress and increasing the contact area for efficient liquid flow, enhancing the filtration process.
Implementation Method 1
a filter section having a plurality of through-holes passing through a first main surface and constructed such that objects to be filtered contained in a liquid are captured
Data Source
AI summary
A filtration filter that includes a filter section having a plurality of through-holes passing through a first main surface and constructed such that objects to be filtered contained in a liquid are captured and a second main surface opposite the first main surface; and a frame section surrounding an outer periphery of the filter section, wherein a first film thickness at a center of the filter section is larger than a second film thickness of the filter section at a position closer to the frame section than the center of the filter section.