Liquid Filtration Pressure Control for Filter Life Extension
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Solution Overview
Problem
Existing filtration devices struggle to maintain consistent filtration performance over the lifetime of the filter medium, leading to inefficient use and premature replacement.
Innovation Solution
A filtration device with sensors to monitor the parameter relation between unfiltered and filtered liquid, adjusting the gauge pressure to optimize filtration performance by reducing flow velocity through the filter medium when performance decreases, using a control unit to manage pump capacity based on sensor feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a membrane filter with small pore size is used to achieve sterile filtration, then filtration precision is improved, but filtration speed deteriorates and clogging occurs
Solution Approach 1:
The filtration device is divided into multiple filtration chambers arranged in series, each containing a membrane filter. This segmentation allows the liquid to be filtered through multiple stages, with each stage handling a portion of the filtration load, thereby maintaining high filtration precision while improving overall filtration speed and reducing clogging of individual filters
Solution Approach 2:
The invention transitions from a single-plane filtration approach to a multi-chamber series arrangement, adding the dimension of sequential processing. This dimensional change allows the system to maintain the precision of small pore size filters while achieving higher productivity through the series configuration
2Manufacturing precision
If a membrane filter with small pore size is used to achieve sterile filtration, then filtration precision is improved, but the membrane filter clogs easily
Solution Approach 1:
By dividing the filtration system into multiple chambers with individual membrane filters, the invention distributes the filtration burden across multiple units. This segmentation prevents any single filter from becoming completely clogged, as particles are progressively removed across stages, maintaining filtration precision while improving clogging resistance
Solution Approach 2:
The series arrangement of multiple filtration chambers performs preliminary filtration actions in sequence, with earlier chambers removing larger particles and preparing the liquid for subsequent finer filtration stages. This preliminary action protects the final high-precision filters from rapid clogging
3Productivity
If multiple membrane filters are connected in parallel, then filtration speed is improved, but filtration precision deteriorates due to uneven flow distribution
Solution Approach 1:
The invention uses series-connected filtration chambers instead of parallel connection, segmenting the filtration process into sequential stages. This segmentation ensures uniform flow distribution through each chamber while maintaining high filtration precision, as each stage processes the liquid sequentially rather than simultaneously with uneven distribution
4Device complexity
If a single large membrane filter is used, then device complexity is reduced, but filtration precision deteriorates and clogging occurs
Solution Approach 1:
The invention segments the filtration function into multiple smaller membrane filters arranged in series chambers. This segmentation achieves high filtration precision by using multiple stages of filtration, while the modular chamber design keeps device complexity manageable through standardized, repeatable units
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
Extends the usable life of the filter medium by maintaining consistent filtration performance, reducing waste and resource consumption through adaptive pressure regulation.
Implementation Method 1
a hollow fiber membrane, each having a plurality of hollow fibers formed in parallel
Implementation Method 2
an ultrasonic generator, ultrasonic waves generated by the ultrasonic generator being applied to the hollow fiber membrane
Data Source
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AI summary
The invention relates to a filtration device (1) for filtering a liquid, the filtration device (1) comprising ▪ a storage container (10) for unfiltered liquid, ▪ a mounting (11) for a filter container (30), ▪ a filter container (30) filled with a filter medium (31) being mounted in the mounting (11), ▪ a first sensor (40) that is configured to determine a first value y1 of a parameter of the unfiltered liquid and ▪ a pump (20) fluidically coupled to the storage container (10) and communicatively coupled to the first sensor (40), wherein the pump (20) is configured to generate a gauge pressure Pg in the storage container (10) during the filtering of the unfiltered liquid, characterized in that the filtration device (1) comprises a second sensor (42), which is configured to determine a second value y2 of the parameter of the filtered liquid and that the pump (20) is communicatively coupled to the second sensor (42) and is configured to reduce the gauge pressure Pg during the filtration process if a parameter relation D of the first value y1 and the second value y2 is lower than a preset first specific parameter relation D1.