Integrated Air Filter Assembly for Compact Ozone and Oil Mist Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aircraft cabin and fuel tank air filtration systems are bulky, heavy, and costly, failing to effectively remove particulates, oil mist, and ozone while minimizing space and weight constraints.
Innovation Solution
A compact, lightweight filter assembly incorporating a binderless media and catalytic converter for high-temperature environments, featuring a hydrophobic filtration media and cleanable ozone converter, with a flow path through a particulate/coalescing element and ozone converter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple separate filtration systems (particulate filter, coalescing filter, ozone removal system) are used, then air quality is improved, but system weight and space increase
Solution Approach 1:
The patent combines multiple filtration functions (particulate filtering, coalescing, and ozone removal) into a single integrated filter assembly. The housing contains all three functional elements in one unit, eliminating the need for separate filtration systems and reducing overall weight and space requirements while maintaining comprehensive air quality treatment.
Solution Approach 2:
The filter assembly is designed as a multi-functional unit that simultaneously performs particulate filtration, oil mist coalescing, and ozone conversion. This universal design allows one system to replace multiple specialized systems, addressing the weight and space constraints while providing comprehensive air treatment for both cabin and fuel tank applications.
2Object-affected harmful factors
If multiple separate filtration systems are used, then air quality is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple filtration systems into a single integrated assembly with a common housing and coordinated flow path. This consolidation simplifies the overall system architecture, reducing the number of separate components, connections, and maintenance procedures required compared to using multiple independent filtration systems.
Solution Approach 2:
The multi-functional filter assembly provides a unified solution that handles particulates, oil mist, and ozone through integrated design. This universal approach reduces device complexity by eliminating the need for multiple specialized systems, each requiring separate installation, operation, and maintenance procedures.
3Weight of stationary object
If filter assembly size is reduced, then space and weight are minimized, but filtration effectiveness may be compromised
Solution Approach 1:
The filter assembly employs a nested arrangement where the catalytic converter is positioned within the housing that also contains the particulate and coalescing filters. This space-efficient nesting allows multiple filtration stages to be compacted into a smaller overall footprint, maintaining comprehensive pollutant removal capability while minimizing weight and space requirements.
Solution Approach 2:
The patent utilizes porous filtration media and catalytic materials that provide high surface area for filtration and chemical conversion within a compact volume. These porous structures enable effective pollutant removal without requiring large filter elements, thus maintaining filtration effectiveness while reducing overall assembly size and weight.
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 system efficiently removes particulates, oil mist, and ozone, maintaining a compact size and low weight, enhancing air quality and system efficiency without increasing fuel costs.
Implementation Method 1
The particulate/coalescing element is disposed in the housing and includes a hydrophobic filtration media
Implementation Method 2
a particulate/coalescing element... for removing oil mist
Implementation Method 3
a cleanable ozone converter... including a passageway having a catalytic interface surface
Data Source
AI summary
A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone. The air filtration system may comprise a fuel tank inerting system (FTIS) filter assembly. The FTIS filter assembly may include a binderless media (no binder) suitable for use in high temperatures. The FTIS filter assembly includes a catalytic converter configured to adsorb one or more VOCs.