Active Airflow Mask With Segmented Filtration Zones
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Solution Overview
Problem
Conventional masks are ineffective in filtering out particulates and pollutants from the air, causing discomfort due to obstructed respiration and poor visibility in smoggy conditions, which can lead to health issues and traffic accidents.
Innovation Solution
A mask design featuring a cover body with air inlets and outlets, equipped with first and second fans to enhance airflow and an air filter, such as a HEPA or activated carbon filter, positioned to overlap the air inlets, ensuring efficient particulate removal and comfortable breathing while preventing fogging and improving visibility through integrated light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is installed on the mask to filter particulates, then the filtering effectiveness is improved, but the respiration of the user is obstructed, causing discomfort
Solution Approach 1:
The mask is divided into multiple functional zones: a first breathable region with higher porosity for comfortable inhalation, a second non-breathable region with lower porosity for effective filtration, and a third breathable region for exhalation. This segmentation allows different parts of the mask to serve different purposes, resolving the contradiction between filtration effectiveness and breathing comfort.
Solution Approach 2:
Different regions of the mask have different porosity characteristics tailored to their specific functions. The first and third breathable regions have higher porosity to facilitate air flow and comfort, while the second non-breathable region has lower porosity to provide effective particulate filtration. This local differentiation of material properties resolves the contradiction by optimizing each zone for its specific purpose.
2Ease of operation
If a common mask is used without a filter, then the respiration is unobstructed, but the mask is difficult to effectively avoid inhaling particulates
Solution Approach 1:
The mask incorporates a segmented structure with distinct breathable and non-breathable regions. The first breathable region allows comfortable inhalation, while the second non-breathable region provides effective particulate filtration. This segmentation enables the mask to simultaneously deliver breathing comfort and reliable particulate protection.
Solution Approach 2:
The mask uses local quality differentiation by creating zones with varying porosity. The breathable regions have higher porosity for comfort, while the non-breathable region has lower porosity for effective filtration. This local optimization allows the mask to provide both comfort and protection without compromising either function.
3Reliability
If the air filter is positioned to overlap the air inlet, then the particulate removal efficiency is improved, but the airflow resistance increases
Solution Approach 1:
The mask segments the airflow path into a first breathable region for inhalation, a second non-breathable region for filtration, and a third breathable region for exhalation. This segmentation allows the filtration function to be concentrated in a specific zone while maintaining open breathable pathways, thus improving particulate removal efficiency without excessively restricting overall airflow speed.
Solution Approach 2:
The mask applies local quality control by creating a non-breathable region with lower porosity specifically at the filtration zone to maximize particulate removal efficiency, while maintaining higher porosity in the breathable regions to preserve airflow speed. This localized optimization resolves the contradiction between filtration efficiency and airflow resistance.
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 mask effectively filters out pollutants, ensuring comfortable breathing and improved visibility by enhancing airflow and using light sources to increase distance perception in smoggy conditions, while maintaining user comfort through an annular elastic component.
Implementation Method 1
an air filter, such as a HEPA or activated carbon filter, positioned to overlap the air inlets, ensuring efficient particulate removal
Implementation Method 2
equipped with first and second fans to enhance airflow
Data Source
AI summary
A mask includes a cover body, a first fan, a second fan and an air filter. The cover body has an air inlet and an air outlet penetrating through the cover body. The first fan is disposed on the cover body and matches the air inlet. The second fan is disposed on the cover body and matches the air outlet. The air filter is disposed on the cover body and partially overlaps the air inlet. The first fan drives an air-flow to rapidly flow from the atmosphere into the mask through the air inlet and the air filter. The air filter removes the particulates and the harmful substances in the air-flow. The second fan drives the respiratory gas to rapidly flow from the mask to the atmosphere through the air outlet. Therefore, the user is able to breathe comfortably with non-particulate and clean air.