Parallel Screen Solvent Reservoir Filter for Liquid Chromatography
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current solvent reservoir filters in liquid chromatography systems are prone to clogging due to particulates, which can lead to pressure issues and accuracy problems, as they have ill-defined pore sizes allowing particles to pass through or get trapped, affecting the robustness and accuracy of chromatography instrumentation.
Innovation Solution
A solvent reservoir filter design featuring two parallel screens with a main body connecting them, a fluid outlet, and a compression interface that securely attaches the screens, ensuring effective filtration and preventing clogging, with an internal fluidic passage for efficient solvent flow and bubble clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single filter with ill-defined pore size is used, then the filter can be simple in structure, but particulates pass through or get trapped causing clogging and pressure issues
Solution Approach 1:
The filter is divided into multiple screens (first screen, second screen, third screen) with different pore sizes arranged in series. Each screen captures particulates of different sizes, preventing clogging of any single screen and maintaining reliable filtration over time. The segmentation of filtration function across multiple screens resolves the contradiction by improving reliability without requiring excessive structural complexity.
Solution Approach 2:
The filter transitions from a single-plane filtration approach to a multi-plane stacked screen configuration. By adding the dimension of multiple parallel screens with varying pore sizes, the system achieves more effective particulate removal while maintaining a compact cylindrical structure that doesn't excessively increase overall complexity.
2Manufacturing precision
If multiple screens with different pore sizes are used, then particulate filtration is improved, but the device complexity increases
Solution Approach 1:
Multiple screens with different pore sizes are merged into a single integrated filter assembly housed within one cylindrical body. The screens are stacked concentrically or in series within the same housing, allowing precise particulate filtration across multiple size ranges while maintaining a unified, manageable device structure rather than separate filter units.
Solution Approach 2:
Each screen in the assembly has a specific local function tailored to its pore size - the first screen captures larger particulates, while subsequent screens with smaller pores capture finer particles. This local specialization of filtration function at different stages of the fluid path achieves high manufacturing precision in particulate removal without requiring the entire device to be overly complex.
3Duration of action of stationary object
If a clogged filter is left in use, then the system continues to operate, but pressure conditions are negatively impacted
Solution Approach 1:
The filtration function is segmented across multiple screens so that if one screen becomes clogged with particulates of a certain size range, the other screens continue to function. This segmentation extends the overall service life of the filter assembly while preventing excessive pressure buildup, as the unclogged screens maintain adequate flow paths.
Solution Approach 2:
The multi-screen design provides a buffer or cushion against pressure issues by distributing the filtration load across multiple screens. When one screen begins to clog, the other screens compensate by maintaining open flow paths, thereby cushioning the system against sudden pressure spikes and extending the time before filter replacement is needed.
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 filter effectively prevents particulates from entering the chromatography system, maintaining system integrity and accuracy by ensuring consistent solvent flow and reducing the risk of clogging, thus enhancing the reliability of liquid chromatography systems.
Implementation Method 1
a first screen extending in a first plane, the first screen configured to filter solvent received through the first screen
Implementation Method 2
a second screen extending in a second plane that is parallel to the first plane, the second screen configured to filter solvent received through the second screen
Data Source
AI summary
A solvent reservoir filter for a liquid chromatograph system includes a first screen extending in a first plane, the first screen configured to filter solvent received through the first screen, a second screen extending in a second plane that is parallel to the first plane, the second screen configured to filter solvent received through the second screen, a main body extending between and connecting the first screen and the second screen, and a fluid outlet configured to expel solvent filtered by the first and second screens from the solvent reservoir filter. Methods of use and assembly of the solvent reservoir filter for a liquid chromatograph system are further disclosed.