Reflective Transparent Optical Chamber for UV Disinfection
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Solution Overview
Problem
Conventional ultraviolet air and water disinfection systems face inefficiencies due to low radiation levels and absorption by chamber walls, and mercury-based UV systems have limitations in terms of longevity, maintenance, and environmental impact, particularly in off-grid locations.
Innovation Solution
A chamber design featuring transparent walls with a refractive index greater than 1.1 and prismatic cavities for enhanced light reflection, combined with a medium having a refractive index close to a vacuum, to increase the intensity of target radiation, such as UV light, for improved disinfection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional ultraviolet air and water disinfection systems are used, then disinfection function is provided, but radiation levels are insufficient and absorption by chamber walls reduces efficiency
Solution Approach 1:
The patent changes the optical parameters of the chamber walls by using transparent materials with specific refractive indices and incorporating prismatic cavities. These parameter changes increase the reflectivity of UV radiation at the wall interfaces, reducing absorption losses and enhancing the overall radiation intensity within the chamber.
Solution Approach 2:
The prismatic cavities in the transparent walls create curved optical paths for UV radiation. The geometric configuration of these cavities redirects radiation that would otherwise be absorbed, increasing the path length and intensity of UV exposure throughout the chamber volume.
2Productivity
If chamber size is increased to improve UV reflection efficiency, then disinfection effectiveness improves, but device complexity and space requirements increase
Solution Approach 1:
Instead of increasing the overall chamber size, the patent applies local modifications to the wall structure at specific locations. The transparent walls with prismatic cavities are implemented at critical interfaces where reflection is needed, providing enhanced UV reflection without requiring a larger chamber volume.
Solution Approach 2:
The patent adds a dimensional element to the wall structure by incorporating prismatic cavities that extend into the wall thickness. This creates additional reflective surfaces in a third dimension, increasing reflection efficiency without expanding the primary chamber volume.
3Productivity
If mercury-based UV systems are used, then disinfection function is provided, but longevity and environmental sustainability are reduced
Solution Approach 1:
The patent moves away from mercury-based systems with limited lifetimes and environmental concerns toward LED-based UV sources. While LEDs have shorter wavelengths, the enhanced optical design compensates for lower output, providing a sustainable, maintenance-free solution without hazardous materials.
Solution Approach 2:
The patent replaces the mechanical/chemical mercury vapor generation system with an electronic LED-based system. This substitution eliminates the need for mercury handling, reduces maintenance requirements, and improves reliability while maintaining disinfection effectiveness through optimized optical design.
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 chamber design significantly enhances the intensity of UV radiation within the enclosure, leading to more effective disinfection of air and water by increasing the reflectivity and reducing absorption, while also offering a more sustainable and durable alternative to mercury-based systems.
Implementation Method 1
The outer surface of the set of transparent walls can include a set of cavities, each cavity comprising an approximately prismatic void
Implementation Method 2
Each transparent wall can comprise a first material transparent to the target radiation and having a refractive index greater than 1.1 for the target radiation. Additionally, a medium located adjacent to an outer surface of the set of transparent walls can have a refractive index within approximately one percent of a refractive index of a vacuum for the target radiation
Data Source
AI summary
A chamber configured to increase an intensity of target radiation emitted therein is provided. The chamber includes an enclosure at least partially formed by a set of transparent walls. Each transparent wall can comprise a first material transparent to the target radiation and having a refractive index greater than 1.1 for the target radiation. The outer surface of the set of transparent walls can include a set of cavities, each cavity comprising an approximately prismatic void. Additionally, a medium located adjacent to an outer surface of the set of transparent walls can have a refractive index within approximately one percent of a refractive index of a vacuum for the target radiation.