Externalized Blower Hard Hat Air Flow System
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Solution Overview
Problem
Conventional hard hats with integrated air flow systems are bulkier and heavier due to the containment of all components within the hat, which is suboptimal for user comfort and practicality.
Innovation Solution
The blower, power supply, and air filter components are mounted externally on a harness such as a belt or backpack, connected to the hard hat via air flow tubing, allowing for a more streamlined and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all air flow components (blower, power supply, air filter) are contained within the hard hat, then the air filtration system is integrated and compact, but the hard hat becomes bulkier and heavier
Solution Approach 1:
The air flow system is segmented into separate components: the blower and power supply are placed in a belt pack worn by the user, while only the air filter and air passage remain integrated with the hard hat. This segmentation reduces the weight and bulk of the hard hat while maintaining functional integration through air flow tubing connections.
Solution Approach 2:
The system transitions from a two-dimensional integration (all components within the hard hat volume) to a three-dimensional distributed configuration where components are arranged across multiple spatial locations (hard hat, belt pack) connected by flexible tubing, effectively utilizing the user's body as part of the system architecture.
2Device complexity
If all air flow components are contained within the hard hat, then the system structure is simplified, but the hard hat becomes bulkier
Solution Approach 1:
The system is divided into modular segments: the hard hat contains only the air filter and air passage, while the blower and power supply are housed in a separate belt pack. This segmentation allows each component to be optimized for its specific function without compromising the overall volume of the hard hat.
3Weight of moving object
If the blower and air filter are mounted externally on a harness, then the hard hat is lighter and more comfortable, but the system requires additional connection components (air flow tubing)
Solution Approach 1:
Flexible air flow tubing serves as an intermediary element connecting the externally mounted blower and air filter to the hard hat air passage. This intermediary allows the system to maintain functional integrity while distributing components across different locations, reducing hard hat weight without compromising air flow efficiency.
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 configuration reduces the bulk and weight of the hard hat while maintaining effective air filtration and flow to protect the user's face from contaminants, enhancing comfort and usability in industrial settings.
Implementation Method 1
a blower 42...draws air through a filter cartridge 50 and forces the filtered air through an air passage
Implementation Method 2
draws air through a filter cartridge 50...to keep eyes and/or eyewear relatively free of paint and dirt contaminants
Data Source
AI summary
A hard hat with air flow system includes a hard hat with an air flow passage for passing air through the hard hat and out exits ports at the front of the hat to provide a shield of air downward across the face of a user. The system includes an air filtration system, a blower assembly for drawing air through the air filter and pushing the filtered air into the air flow passage of the hard hat, and a power supply for powering the blower. The filtration system, blower assembly and power supply being supported on a harness such as a belt or backpack, external from the hard hat.