Antimicrobial Air Filter for Aircraft Cabin Mold Inhibition
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Solution Overview
Problem
Commercial aircraft cabin air filtration systems face challenges with the buildup of mold and fungus on HEPA filters, which can reintroduce pollutants into the air, increasing the risk of infectious diseases among passengers.
Innovation Solution
An air filtration media incorporating a porous matrix treated with diiodomethyl-p-tolyl sulfone and a combination of zinc omadine and thiabendazole as antimicrobial agents, applied in specific concentrations to inhibit microbial growth, is used to create an antimicrobial air filter that resists mold and fungus growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HEPA filters are used to recirculate cabin air, then air filtration efficiency is improved, but mold and fungus buildup increases on the filter
Solution Approach 1:
The filter media is pre-treated with antimicrobial agents (diiodomethyl-p-tolyl sulfone, zinc omadine, and thiabendazole) during manufacturing before deployment. This preliminary action prevents mold and fungus buildup during filter service, eliminating the need for frequent replacements while maintaining filtration efficiency.
Solution Approach 2:
The patent converts the harmful effect of microbial growth on filters into a beneficial outcome by incorporating antimicrobial agents that prevent such growth. The filter media is treated with combinations of antimicrobial chemicals that specifically target mold and fungus, transforming the potential harm of microbial contamination into a protective advantage.
2Object-affected harmful factors
If HEPA filters are replaced frequently due to mold growth, then air quality is maintained, but filter replacement costs and downtime increase
Solution Approach 1:
By pre-treating the filter media with antimicrobial agents during manufacturing, the filter maintains its air quality performance throughout its service life without requiring frequent replacements. This eliminates the time loss associated with regular filter changes while持续 maintaining effective air filtration.
3Reliability
If antimicrobial agents are applied to filter media, then microbial growth is inhibited, but manufacturing complexity increases
Solution Approach 1:
The patent specifies precise concentration parameters for the antimicrobial agents (diiodomethyl-p-tolyl sulfone at 150-250 ppm, zinc omadine and thiabendazole at 350-450 ppm) to optimize microbial growth inhibition while maintaining manufacturing feasibility. These parameter specifications ensure effective performance without excessive manufacturing complexity.
Solution Approach 2:
The filter media uses a composite approach by combining multiple antimicrobial agents (diiodomethyl-p-tolyl sulfone, zinc omadine, and thiabendazole) with the filter substrate. This composite material approach provides enhanced microbial growth inhibition while distributing the manufacturing complexity across established filtration material synthesis processes.
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 antimicrobial air filter effectively reduces bacterial and fungal growth, maintaining air quality and extending the service life of the filter by preventing the accumulation of infectious agents, thereby reducing the risk of disease transmission among passengers.
Implementation Method 1
a porous media having a first antimicrobial agent which is diiodomethyl-p-tolyl sulfone in contact with the porous media
Implementation Method 2
a first antimicrobial agent which is diiodomethyl-p-tolyl sulfone and a second antimicrobial agent which is a combination of zinc omadine and thiabendazole
Data Source
AI summary
A microbial resistant air filter is disclosed. The microbial resistant air filter has air filter media having first and second antimicrobial agents. The first antimicrobial agent is diiodomethyl-p-tolyl sulfone and the second antimicrobial agent is a combination of zinc omadine and thiabendazole.