Filter Plate Pressure Decoupling for Uniform Vacuum Extraction
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Solution Overview
Problem
Existing sample extraction systems using vacuum manifolds suffer from variability in extraction efficiency due to non-homogenous behavior across different columns when a pressure difference is applied, leading to inconsistent performance.
Innovation Solution
A passive pressure decoupling device is introduced, which includes a reserve air volume structure above each opening of the filter columns or filter plate, allowing for independent airflow regulation and stabilizing pressure differences across multiple columns, enhancing uniform extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple filter columns are used in parallel with a vacuum manifold, then productivity is improved, but extraction efficiency becomes non-homogenous and unreliable
Solution Approach 1:
The invention divides the common vacuum pressure into separate pressure zones by placing individual vacuum chambers around each filter column. This segmentation allows each column to operate independently with its own vacuum pressure, eliminating the non-homogenous airflow behavior that occurs when multiple columns share a common vacuum manifold. The segmentation principle directly resolves the contradiction by maintaining reliability through independent column operation while preserving productivity through parallel processing capability.
Solution Approach 2:
The invention applies local quality by providing each filter column with its own tailored vacuum environment through individual vacuum chambers. Each column can have optimized vacuum pressure and airflow characteristics specific to its filtration requirements, rather than being constrained by the average performance of a shared manifold system. This local optimization ensures consistent extraction efficiency across all columns while maintaining high productivity.
2Device complexity
If a common vacuum manifold is used for multiple columns, then device complexity is reduced, but airflow becomes unimpeded through empty columns reducing vacuum force effectiveness
Solution Approach 1:
The invention segments the vacuum system into individual chambers for each filter column, preventing airflow from unimpeded columns from interfering with the vacuum force applied to columns containing liquid. Each column experiences its own dedicated vacuum pressure without being diluted by parallel airflow paths through empty columns. This segmentation maintains effective vacuum force while accepting increased device complexity compared to a shared manifold approach.
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 passive pressure decoupling device ensures consistent and efficient sample extraction by stabilizing airflow through each column, reducing variability and improving overall system performance.
Implementation Method 1
stabilizing pressure differences across multiple columns, enhancing uniform extraction efficiency
Implementation Method 2
The vacuum manifold 100 is connected to a vacuum pump that generates a pressure in a vacuum chamber 120 that is smaller than the atmospheric pressure. This causes the air flow to move from the top of a filter column 113, which is at the atmospheric pressure, to a bottom 114 of the vacuum chamber 120, pushing the liquid through the filters.
Data Source
AI summary
A sample filtration and/or extraction system includes a vacuum manifold configured to connect with a vacuum pump, a vacuum chamber such that each of a plurality of filter columns or the filter plate is configured to be disposed at least partially within the vacuum chamber, the plurality of filter columns or the filter plate including a plurality of openings configured to receive a sample, and a passive pressure decoupling device configured to be placed on a top of the plurality of filter columns or the filter plate, such that each of the plurality of openings of the plurality of filter columns or the filter plate is covered by the passive pressure decoupling device. The passive pressure decoupling device includes a reserve air volume structure above each of the plurality of openings.