Filtration Device With Vent Holes For Gas Exhaust
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Solution Overview
Problem
Existing filtration devices experience reduced filtration efficiency when covering a centrifuge tube, due to increased pressure and gas mixing, which blocks through-holes and reduces the effectiveness of filtering target objects like thrombi or cells.
Innovation Solution
A filtration device with a housing that includes a tubular portion and a flange portion with vent holes, separating liquid and gas flow paths, allowing gas to be exhausted outside and preventing pressure increase and gas mixing with the liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the filtration device covers the upper cavity of a centrifuge tube to contain filtered liquid, then the liquid can be collected, but pressure increases and gas mixes with the liquid blocking through-holes, reducing filtration efficiency
Solution Approach 1:
The housing is divided into separate functional zones: a tubular portion for liquid discharge and a flange portion with vent holes for gas exhaust. This segmentation creates distinct pathways for liquid and gas, preventing gas from blocking the filtration filter's through-holes while maintaining liquid containment capability
Solution Approach 2:
The harmful gas phase is extracted and separated from the liquid phase through dedicated vent holes in the flange portion. This allows gas to be exhausted outside the centrifuge tube while the liquid remains contained for collection, eliminating the harmful effect of gas blocking the filtration filter
2Ease of manufacture
If the housing structure is simplified without additional venting components, then manufacturing is easier, but gas accumulates and blocks through-holes reducing filtration efficiency
Solution Approach 1:
The venting function is merged into the flange portion of the existing housing structure rather than being a separate component. The vent holes are integrated directly into the flange, combining the housing structural function with the gas exhaust function in a single manufactured part, thus maintaining ease of manufacture while improving filtration efficiency
Solution Approach 2:
The flange portion serves multiple functions: it provides structural support for the housing, creates a sealing interface with the centrifuge tube, and incorporates vent holes for gas exhaust. This multi-functionality eliminates the need for separate venting components, maintaining manufacturing simplicity while solving the gas blocking problem
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 enhances filtration efficiency by preventing pressure buildup and gas contamination, ensuring effective filtration of target objects like cells and thrombi.
Implementation Method 1
a flange portion that extends from an outer peripheral surface of the tubular portion, the flange portion including at least one vent hole extending away from the outer peripheral surface of the tubular portion
Data Source
AI summary
A filtration device that includes: a filtration filter having a first main surface that captures a filtration target object contained in a liquid and a second main surface that faces the first main surface; and a housing that holds the filtration filter, and defines a liquid inflow path that faces the first main surface and a liquid discharge path that faces the second main surface, the housing including a tubular portion that extends in a direction away from the second main surface of the filtration filter and defines the liquid discharge path, and a flange portion that extends from an outer peripheral surface of the tubular portion, and the flange portion includes a vent hole extending away from the outer peripheral surface of the tubular portion.