Air-fed visor with integrated distribution rose
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Solution Overview
Problem
Existing air-fed visors for spray painting applications suffer from limited air distribution directionality and area, causing user discomfort due to poorly directed air jets from holes in the breathing air tube.
Innovation Solution
An air distribution rose is integrated into the foam mask of the visor, featuring an air inlet connected to an air tube and a chamber with outlets distributed parallel to the mask's surfaces, ensuring uniform air distribution through permeable inner and impermeable outer surfaces, and interlocking plates with castellations to direct air effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If holes are provided in the breathing air tube for air distribution, then air can be delivered to the visor space, but the holes limit the direction and area of air distribution causing user discomfort
Solution Approach 1:
The air distribution system is segmented into multiple outlets arranged in a specific pattern on the rose, rather than using simple holes in the air tube. This segmentation allows air to be distributed in multiple directions simultaneously, improving comfort while maintaining a relatively simple overall structure.
Solution Approach 2:
The air distribution is extended from a linear arrangement (holes in the tube) to a two-dimensional pattern (outlets on the rose structure). This dimensional change enables air to be delivered across a wider area and in multiple directions, resolving the limitation of directional air distribution.
2Productivity
If jets of air from holes blow onto the wearer's face, then air is delivered effectively, but user discomfort increases
Solution Approach 1:
Different regions of the rose have outlets positioned to deliver air to different locations. The local arrangement of outlets ensures that air is delivered where needed without creating concentrated jets that would cause discomfort on the wearer's face.
Solution Approach 2:
The rose structure acts as an intermediary between the air tube and the wearer's face. It distributes and diffuses the air flow, preventing direct jet impact on the face while maintaining effective air delivery to the visor space.
3Device complexity
If air is distributed through a limited area, then the structure remains simple, but air distribution uniformity is poor
Solution Approach 1:
The air distribution function is segmented into multiple outlets positioned at different locations on the rose. This segmentation naturally improves distribution uniformity across the visor space without requiring complex active control systems or precision manufacturing.
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 solution provides a more uniform and diffuse air distribution, enhancing user comfort by directing breathing air effectively and minimizing drafts on the wearer's face.
Implementation Method 1
a foam material having a thickness between an inner surface and an outer surface of the mask... the air distribution chamber comprises a plurality of outlets distributing air into the foam material
Implementation Method 2
The inner surface of the foam material of the mask is preferably permeable to air
Data Source
Figure 1~2
Figure 3a~4
Figure 5~6b
AI summary
An air-fed visor comprises a mask, at least part of which comprises a foam material. An air tube is provided for delivering air to the visor. An air distribution rose is disposed in the foam mask. The rose comprises an air inlet connected to the air tube and an air distribution chamber for distributing air from the air inlet into the foam material.