Respirator Interface Component with Bleed Holes for Noise Reduction
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Solution Overview
Problem
Existing respirators face ergonomic challenges in securely connecting the air supply unit to the headgear while maintaining user comfort and allowing for adjustable air delivery to accommodate different face and head proportions.
Innovation Solution
The introduction of an interface component that is releasably mounted to both the cradle and the tube, featuring cradle-engaging and tube fastenings, allows for adjustable and secure air delivery within the face covering, enhancing ergonomics and accommodating various user sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tube and cradle are integrated as a single component, then the structure is simpler and more secure, but it reduces adaptability for users with different face and head proportions
Solution Approach 1:
The interface component is designed as a separate, modular element that can be independently attached to both the tube and the cradle. This segmentation allows the tube and cradle to remain distinct components rather than being integrated, enabling the interface component to be customized or adjusted for different user proportions while maintaining a secure connection between all elements.
2Ease of operation
If the interface component is permanently fixed to the cradle and tube, then the connection is more secure, but it reduces ease of adjustment and cleaning
Solution Approach 1:
The interface component incorporates releasable and re-couplable fastenings that allow it to be dynamically attached and detached from both the cradle and the tube. This dynamic connection mechanism maintains security during use while enabling easy adjustment, cleaning, and replacement when needed, resolving the contradiction between permanent fixation and operational flexibility.
3Productivity
If airflow is delivered directly into the face covering, then air delivery efficiency is improved, but it generates noise that reduces user comfort
Solution Approach 1:
The interface component acts as an intermediary element between the tube and the face covering. It includes features such as bleed holes and a vibration decoupler that mediate the airflow transmission, allowing air to be delivered efficiently into the face covering while reducing the generation and transmission of vibration and noise, thus maintaining productivity while eliminating harmful noise effects.
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
This solution enhances user comfort by providing a secure and adjustable air delivery system that can be tailored to different user proportions, improving ergonomics and reducing noise through the use of bleed holes and a vibration decoupler.
Implementation Method 1
a vibration decoupler arranged in use between an air supply unit and the interface component, wherein said vibration decoupler reduces vibrational noise from the tube to the interface component
Implementation Method 2
The overhead branch comprises one or more bleed holes
Data Source
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AI summary
A respirator comprising: an air supply unit arranged to deliver air at its output; headgear comprising a cradle for interfacing with a user's head, and a face covering from within which the user breathes; a tube to receive air from the air supply unit; and an interface component to receive air from the tube and to deliver said air within the face covering, wherein the interface component provides a frame for supporting the face covering, and comprises an overhead branch and a forehead branch, wherein the overhead branch comprises one or more bleed holes, such that in use vibrations from the air supply and tube are reduced. Components of the respirator and related methods are also described.