Multi-Channel Respirator Valves for CO2 and Humidity Control
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Solution Overview
Problem
Existing respirators suffer from disadvantages such as increased carbon dioxide, humidity, and temperature in the under-mask space, leading to user fatigue, sweating, and skin irritation, due to the closed under-mask space and shared breathing air volume for the nose and mouth.
Innovation Solution
A respirator design with separate channels for inhaled air and exhaled air, featuring nasal and oral fluid channels, inhalation and exhalation valves that transition between open and closed configurations based on user breathing, and optional filters with liquid media for enhanced filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a shared breathing air volume is created for the nose and mouth, then the respirator structure is simplified, but user comfort deteriorates due to increased carbon dioxide and humidity buildup
Solution Approach 1:
The respirator is divided into separate nasal and oral channels, with independent inhalation and exhalation pathways for each. This segmentation prevents the mixing of breath volumes and eliminates the closed under-mask space problem, allowing exhaled air to be properly vented while maintaining structural efficiency through modular design.
2Reliability
If the under-mask space is closed, then filtration efficiency is improved, but user comfort deteriorates due to increased temperature and humidity
Solution Approach 1:
The patent introduces separate exhalation channels as intermediary pathways that allow exhaled air to bypass the filtration media during exhalation. This mediator approach maintains filtration efficiency during inhalation while providing a dedicated escape route for warm, humid exhaled air, preventing under-mask space overheating and condensation.
3Object-affected harmful factors
If separate channels for nasal and oral breathing are implemented, then user comfort is improved by preventing carbon dioxide buildup, but device complexity increases
Solution Approach 1:
The patent merges the nasal and oral exhalation channels into a common exhalation outlet that leads to the same filtration media. This combining approach reduces the number of separate components needed while maintaining the benefits of separate breathing pathways during inhalation, simplifying the overall device structure without compromising user comfort.
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 respirator design improves user comfort by preventing the buildup of carbon dioxide and humidity, reducing fatigue and skin irritation, while maintaining effective air filtration and exhalation.
Implementation Method 1
a first valve coupled to the first inhalation conduit and configured to transition between (a) an open configuration in which the first aperture is in fluidic communication with the first inhalation conduit to allow the user to inhale from the first inhalation conduit to the first nostril, and (b) a closed configuration in which fluidic communication between the first aperture and the first inhalation conduit is prevented, the first valve configured to assume its open configuration in response to inhalation by the user
Implementation Method 2
a second valve configured to transition between (a) an open configuration in which the first inhalation conduit is in fluidic communication with the exhalation conduit or an environment to allow the user to exhale from the first nostril to the exhalation conduit or the environment, and (b) a closed configuration in which air is prevented from passing through the second valve, the second valve configured to assume its open configuration in response to exhalation by the user
Implementation Method 3
optional filters with liquid media for enhanced filtration
Implementation Method 4
optional filters with liquid media for enhanced filtration
Data Source
AI summary
The present disclosure relates generally to breathing apparatuses where inhaled air and exhaled air are separated into different channels to permit a user to inhale fresh air. These devices can optionally filter inhaled air and exhaled air. These devices may include valves to help guide inhaled air and exhaled air to desired locations.