Active Airflow Mask With Dual Filtration
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Solution Overview
Problem
Existing masks face challenges with airflow resistance and discomfort due to high filter ratings and contamination, making it difficult to breathe smoothly and reuse effectively.
Innovation Solution
A mask design incorporating a fan system with dual filters and a flexible, lightweight body that allows air to be introduced and discharged through separate pathways, considering user breathing patterns, with spacers to maintain airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high filter rating is used to protect the respiratory system, then filtration effectiveness is improved, but breathing resistance increases
Solution Approach 1:
The mask divides the filtration function into two separate filters: a first filter for filtering air discharged to the outside and a second filter for filtering air introduced during inhalation. This segmentation allows each filter to be optimized for its specific function, reducing overall breathing resistance while maintaining filtration effectiveness.
Solution Approach 2:
A blowing device with a fan is introduced as an intermediary mechanism to actively control airflow through the filters. The fan generates blowing force to facilitate air passage through the high-rated filters, reducing the breathing resistance that would otherwise result from using high-efficiency filtration materials.
2Adaptability or versatility
If a blowing device is added to control airflow and enable reuse, then mask reusability is improved, but device complexity increases
Solution Approach 1:
The blowing device serves multiple functions: it actively controls airflow through the filters during both inhalation and exhalation phases, enables mask reuse by maintaining filter effectiveness, and potentially adjusts airflow rates to optimize comfort and filtration performance across different usage conditions.
Solution Approach 2:
The first and second filters are disposed in a nested arrangement where the first filter is positioned between the mask body and the fan, and the second filter is disposed at the rear of the fan. This nested configuration consolidates multiple filtration stages within a compact structure, reducing overall device complexity while maintaining the benefits of dual-stage filtration.
3Ease of operation
If the mask body is made flexible for comfort, then ease of operation is improved, but structural strength may be reduced
Solution Approach 1:
The mask body is constructed as a flexible shell that can conform to the user's face for comfort and proper sealing. This flexible construction allows the mask to adapt to different face shapes and sizes while maintaining the structural integrity needed to support the filtration system and blowing device.
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
Ensures smooth breathing by optimizing airflow paths and reducing resistance, allowing for efficient air intake and discharge while maintaining mask usability and ease of use.
Implementation Method 1
a fan disposed at a rear of the mask body to generate a blowing force
Implementation Method 2
a first filter disposed between the mask body and the fan and configured to filter air intaken by the fan
Implementation Method 3
a second filter disposed at a rear of the fan to cover at least a part of a face of a user. The second filter may be configured to filter air intaken from an outside of the mask body when the user inhales and filter air discharged toward the outside of the mask body when the user exhales
Data Source
AI summary
A mask is provided. The mask includes a mask body allowing air to be introduced and discharged therethrough, a fan disposed at the rear of the mask body to generate a blowing force, a first filter disposed between the mask body and the fan, and configured to filter air intaken by the fan, and a second filter disposed at rear of the fan to cover at least a part of a face of the user. The second filter is configured to filter air intaken from an outside of the mask body during the user inhales, and filter air discharged toward the outside of the mask body during the user exhales.