Variable Expired Gas Introduction Section in Face Mask
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Solution Overview
Problem
Existing face masks struggle to consistently introduce expired gas from diverse facial shapes into expired gas concentration detection sensors due to variations in nasal and mouth positions.
Innovation Solution
A face mask design with a variable expired gas introduction section, adjustable bridge parts, and an elastic communication channel that ensures reliable gas introduction regardless of facial shapes, featuring movable and adjustable components to optimize gas flow and reduce contact pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the expired gas introduction section is fixed in position, then the mask structure is simple, but the expired gas cannot be reliably introduced for subjects with different facial shapes
Solution Approach 1:
The bridge part is designed as a stretchable component that allows the expired gas introduction section to move forward or backward relative to the wall section. This dynamic adjustment enables the introduction section to adapt to different facial shapes and positions, ensuring reliable expired gas introduction without requiring a completely complex adjustable mechanism
Solution Approach 2:
The bridge part is made of a stretchable material that can deform elastically to accommodate different facial geometries. This flexibility allows the structure to adapt to various subjects while maintaining the functional connection between the wall section and the expired gas introduction section
2Stability of the object's composition
If the bridge part is made rigid, then the structure is stable, but it creates excessive contact pressure on the subject's face
Solution Approach 1:
The bridge part is constructed from a stretchable, flexible material that can deform under pressure. This flexibility allows the bridge part to conform to the subject's facial contours, distributing and reducing contact pressure while maintaining the structural connection and stability of the mask assembly
3Adaptability or versatility
If the expired gas introduction section is positioned to accommodate all facial shapes, then it works for diverse subjects, but the structure becomes overly complex
Solution Approach 1:
The stretchable bridge part provides a simple dynamic adjustment mechanism that allows the expired gas introduction section to move and adapt to different facial shapes. This passive adaptation through material elasticity achieves versatility without requiring complex active adjustment mechanisms, motors, or multiple discrete components
Solution Approach 2:
The bridge part's stretchability allows it to change its physical parameters (length, shape) in response to different facial geometries. This parameter change enables the same structure to accommodate various subjects by simply deforming to the appropriate configuration rather than requiring multiple fixed-position components
Data Source
AI summary
A mask configured to be attached to the face of a subject includes a wall section that defines an internal space and covers at least a portion of a nose and a mouth of the subject, an expired gas introduction section that is disposed in the internal space and introduce the subject's expired gas, and a communication section defining a communication channel through which the subject's expired gas introduced from the expired gas introduction section is introduced into an expired gas concentration detection sensor. The position of the expired gas introduction section in the internal space is variable.