Diving Mask Air Channel Segmentation for Oxygen Purity
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Solution Overview
Problem
Traditional diving masks often mix exhaled air with inhaled air, leading to decreased oxygen concentration and chest tightness in users, limiting their ability to dive for extended periods.
Innovation Solution
A diving mask design featuring a mask assembly with a circumferential first air outlet channel and a breather assembly with spaced air inlet and second air outlet channels, preventing the mixing of fresh and exhaled gases, ensuring a normal oxygen concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional diving masks use shared air channels for inhalation and exhalation, then the device complexity is reduced, but the oxygen concentration in inhaled air decreases and chest tightness occurs
Solution Approach 1:
The air channel system is segmented into distinct inhalation channels (first air inlet channel, second air inlet channel) and exhalation channels (first air outlet channel, second air outlet channel). This segmentation prevents mixing of inhaled and exhaled air, maintaining oxygen concentration while managing airflow through separate dedicated pathways for each function.
Solution Approach 2:
The exhalation function is extracted and isolated from the inhalation channels. Exhaled air is directed through dedicated outlet channels (first air outlet channel along circumferential direction, second air outlet channel) that are spatially separated from the inlet channels, preventing re-inhalation of CO2-rich air and maintaining oxygen levels.
2Device complexity
If air inlet and outlet channels are close together, then the device complexity is reduced, but fresh air mixes with exhaled gas causing chest tightness
Solution Approach 1:
The first air outlet channel is arranged along the circumferential direction of the accommodating cavity, utilizing the radial dimension to direct exhaled air away from the inhalation path. The second air outlet channel is positioned at a different spatial location, creating multi-dimensional separation between inlet and outlet channels to prevent air mixing while maintaining compact overall structure.
Solution Approach 2:
The air channel arrangement employs asymmetric positioning where the first air outlet channel extends circumferentially and the second air outlet channel is located at a different angular position. This asymmetric configuration ensures that exhaled air flows in directions that do not intersect with incoming fresh air paths, preventing mixing without requiring symmetric complex routing.
Data Source
AI summary
The present disclosure discloses a diving mask, including a mask assembly and a breather assembly. The mask assembly is provided with an accommodating cavity and a first air outlet channel. The first air outlet channel is arranged along a circumferential direction of the accommodating cavity. A wall surface of the accommodating cavity is provided with a first air inlet and an air outlet. The first air outlet channel is communicated with the accommodating cavity through the air outlet. The breather assembly is provided with an air inlet channel and a second air outlet channel which are spaced from each other. The air outlet is communicated with the second air outlet channel. The air inlet channel is communicated with the first air inlet.