SAN Filter Media Preventing Fiber Protrusion in Enclosures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing recirculation filters in electronic enclosures, such as hard disk drives, face issues with protruding fibers causing damage and the use of polypropylene leading to contaminant formation, while current filters often require stabilizers that can generate vapor contaminants.
Innovation Solution
The development of a filter media using a fine fiber material composed of a styrene/acrylonitrile (SAN) copolymer, which forms a layer on a substrate material, preventing fiber protrusion and eliminating the need for polypropylene and stabilizers, with a protective layer to enhance durability and filtration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing recirculation filters are used, then filtration is provided, but fibers protrude causing damage to electronic components
Solution Approach 1:
The patent uses a thin film coating of styrene-acrylonitrile copolymer on the filter fibers. This thin film encapsulates the fiber ends, preventing them from protruding while maintaining the filter's structural integrity and filtration effectiveness.
Solution Approach 2:
The patent creates a composite structure by coating existing filter fibers with styrene-acrylonitrile copolymer. This composite approach combines the filtration capabilities of the base fiber material with the protective and encapsulating properties of the copolymer coating.
2Reliability
If polypropylene is used in filter media, then filtration is achieved, but contaminant formation occurs
Solution Approach 1:
The patent changes the material composition parameter by replacing polypropylene with styrene-acrylonitrile copolymer. This material substitution eliminates the contaminant formation issue while maintaining effective filtration performance through the copolymer's inherent filtration properties.
3Stability of the object's composition
If stabilizers are added to filter materials, then material stability is improved, but vapor contaminant generation occurs
Solution Approach 1:
The patent extracts and eliminates the stabilizer component from the filter material composition. The styrene-acrylonitrile copolymer provides inherent stability without requiring additional stabilizer chemicals, thereby removing the source of vapor contaminant generation while maintaining material stability.
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 solution effectively prevents fiber protrusion and contaminant formation, enhancing the longevity and efficiency of electronic components by ensuring effective filtration without introducing additional contaminants, thereby improving the reliability and performance of recirculation filters.
Implementation Method 1
The layer including an adsorbent media includes activated carbon
Implementation Method 2
a filter media that includes the fine fiber material
Data Source
Figure 1
Figure 2
Figure 3A~5
AI summary
The present disclosure provides styrene/acrylonitrile fine fibers, filter media including styrene/acrylonitrile fine fibers, a recirculation filter including a styrene/acrylonitrile fine fiber or filter media, and methods.