Nanofiber Filter With Multi-Unit Electrospinning
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Solution Overview
Problem
Conventional air filters experience increased pressure loss and reduced sustainability due to particle accumulation, and the production of nanofiber filters is limited by high costs and difficulty in mass production, with existing technologies failing to efficiently filter fine particles and maintain filter efficiency.
Innovation Solution
A filter comprising a cellulose substrate with laminated polyvinylidene fluoride nanofiber non-woven fabric layers of different diameters, produced using a multi-unit electrospinning apparatus, which enhances filtering efficiency and sustainability while allowing for mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nanofiber is used to filter fine particles, then filtering efficiency is improved, but production cost increases and mass production becomes difficult
Solution Approach 1:
The patent uses a cost-effective alternative material (polyvinylidene fluoride nanofiber) that replicates the fine particle filtering capability of expensive nanofiber filters, achieving similar performance through a more economically viable production approach
Solution Approach 2:
The patent changes the fiber diameter parameter to 150-300nm, which is larger than conventional nanofiber filters but still effective for fine particle filtration, thereby reducing production cost while maintaining acceptable filtering efficiency
2Reliability
If nanofiber is used to filter fine particles, then filtering efficiency is improved, but difficulty in mass production increases
Solution Approach 1:
The patent divides the filter into multiple layers with different fiber diameter ranges (150-300nm and 300-500nm), allowing each layer to be produced and optimized independently, which facilitates mass production while maintaining overall filtering efficiency
Solution Approach 2:
The patent creates a composite structure by combining nanofiber layers with different fiber diameters and material properties, achieving enhanced filtering performance that can be produced through standardized multi-layer manufacturing processes
3Reliability
If particles accumulate on filter medium, then filtering function is maintained, but pressure loss increases and sustainability declines
Solution Approach 1:
The patent employs nanofiber materials with controlled porosity and interconnected pore structures that allow particle accumulation without significant pressure loss, maintaining filtering function while extending sustainability through optimized pore architecture
Solution Approach 2:
The patent transitions from two-dimensional filter media to three-dimensional nanofiber networks with controlled pore distributions, creating additional pathways for fluid flow that reduce pressure loss while maintaining filtering efficiency over extended periods
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 achieves reduced pressure loss, improved filtering efficiency, and extended sustainability, with the multi-unit electrospinning process enabling uniform quality production and cost-effective mass production of nanofiber filters.
Implementation Method 1
conventional air filter provides static electricity to fiber-assembly comprising a filter medium, and measures efficiency according to the principle collecting by electrostatic force
Implementation Method 2
measures efficiency according to the principle collecting by electrostatic force
Data Source
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AI summary
The purpose of the present invention is to provide a filter comprising nanofiber and a method for manufacturing the same, and the present invention relates to a filter manufactured by continuously forming spinning solution by means of an electrospinning apparatus comprising at least two units, and a method for manufacturing the same. A filter manufactured by the method is advantageous in that manufacturing process can be made continuous, thereby making process efficient and enabling mass production, and is characterized in that, by having nanofiber non-woven fabric a filter having excellent filtering efficiency is manufactured.