Dust Mitigation Helmet With Airflow and Electrostatic Barrier
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lunar dust and Earth-based airborne dust pose significant inhalation risks and equipment damage due to their small size, electrostatic charge, and abrasive nature, necessitating effective dust mitigation to protect human health and equipment.
Innovation Solution
A helmet with a face vent, spacer arrangement, positive pressure air source, and electrodes that produce an electrostatic field to repel charged particles, combined with an optional ionizer to charge neutral particles, creating a barrier to prevent dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a sealed helmet is used to prevent dust entry, then dust protection is improved, but breathability and comfort deteriorate
Solution Approach 1:
The patent introduces an intermediary airflow system that mediates between the external dusty environment and the internal clean space. A fan-driven airflow system creates a controlled air current that flows over the face vent and through the helmet interior, acting as a moving barrier that prevents dust particles from entering while allowing breathable air circulation. This resolves the contradiction by enabling both protection and breathability through the intermediary airflow mechanism.
Solution Approach 2:
The patent employs pneumatic principles by using a fan to generate and control airflow within the helmet. The airflow system creates positive pressure inside the helmet, forming a pneumatic barrier that actively repels dust particles. This pneumatic mechanism allows the helmet to maintain both sealed protection and breathable air circulation, resolving the contradiction between dust prevention and breathability.
2Ease of operation
If a face vent is provided for breathability, then breathability is improved, but dust particle entry risk increases
Solution Approach 1:
The patent applies preliminary action by pre-charging dust particles using an ionization source positioned before the face vent. The ionization source generates ions that attach to neutral dust particles, charging them before they reach the face vent. This preliminary charging enables the subsequent electrostatic repulsion barrier to effectively block the particles, allowing the face vent to remain open for breathability while preventing dust entry.
Solution Approach 2:
The patent converts the potentially harmful effect of dust particles into a beneficial outcome by using an ionization source to charge them. The ionization process transforms neutral dust particles into charged particles, which then become susceptible to the electrostatic repulsion barrier. This conversion allows the face vent to maintain breathability while the charged particles are repelled by the electrostatic field, eliminating the dust entry risk.
3Object-affected harmful factors
If electrostatic charging is used to repel particles, then particle repulsion is improved, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by using an ionization source to pre-charge dust particles before they reach the electrostatic barrier. The ionization source generates ions that attach to neutral particles, charging them in advance. This preliminary charging reduces the energy required for the subsequent electrostatic repulsion, as the particles are already charged and only need to be repelled rather than requiring continuous high-energy charging. This resolves the contradiction by reducing overall energy consumption through efficient two-stage particle handling.
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 helmet provides a clean internal environment by repelling charged particles and charging neutral ones, protecting the respiratory system from dust contamination and enhancing comfort in dusty environments.
Implementation Method 1
The electrodes are configured to produce an electrostatic field that spans the face vent that repel charged particles outside of the helmet
Implementation Method 2
The positive pressure air source is configured to exit airflow through the face vent via the channel
Data Source
AI summary
Described herein are embodiments directed to a particle repelling helmet having particle mitigation system that keeps dust particles from going into the interior of the helmet. The helmet comprises a face vent that provides an unobstructed pathway between an external environment and a wearer's eyes, nose and mouth. A spacer arrangement connected to an inner side of the helmet provides a channel between the wearer's head and the inner helmet side. A fan blows air through the helmet, across the wearer's head and out the face vent and head receiving opening in the bottom of the helmet. Electrodes disposed along the edge of the face vent produce an electrostatic barrier that spans the face vent thereby further preventing charged dust from going into the helmet. The helmet can also comprise an ionizer that generates ions, which charges neutral dust particles that can be blocked by the barrier.