UVC Lamp Cooling via Uniform Air Flow
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Solution Overview
Problem
Conventional UVC radiation systems experience significant degradation in radiation output due to lamp heating, leading to inefficient germicidal action and decontamination, as they fail to maintain optimal operating temperatures for UVC lamps.
Innovation Solution
An ultraviolet radiation system with a housing design that includes UVC lamps coated for maximum reflectance, a fan for uniform air flow to cool the lamps, and sensors to monitor output and adjust operation, ensuring maximal radiation efficiency and decontamination of both surfaces and air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UVC lamps operate without temperature control, then the system structure is simple, but the radiation output degrades by 60% or more due to lamp heating
Solution Approach 1:
The patent implements preliminary cooling action by directing air flow over the lamps before they reach excessive temperatures. The housing design with air intake openings and fan creates a pre-cooling environment that prevents temperature rise before it causes significant radiation output degradation, rather than reacting after overheating occurs.
Solution Approach 2:
The patent introduces air as an intermediary cooling medium between the heat-generating lamps and the surrounding environment. This air flow acts as a thermal mediator that absorbs excess heat from the lamps through convection, preventing direct thermal accumulation that would otherwise cause 60% or more radiation output degradation.
2Illumination intensity
If air flow is increased to cool the lamps, then the radiation output is maintained, but the system complexity and power consumption increase
Solution Approach 1:
The patent applies cooling air flow locally and selectively over the lamp surfaces rather than cooling the entire system uniformly. The housing design directs air specifically to the regions where lamps generate heat, creating localized cooling zones that maintain radiation output while minimizing the total volume of air that needs to be moved and the associated power consumption.
Solution Approach 2:
The system uses the same air flow that cools the lamps to decontaminate the surrounding air. The UVC radiation decontaminates the air that passes over the lamps, creating a self-service mechanism where the cooling air performs dual functions: thermal management and germicidal action, thereby reducing the need for separate high-power cooling systems.
3Productivity
If multiple UVC lamps are used to increase decontamination capacity, then the germicidal effectiveness is improved, but the heat generation and temperature control difficulty increase
Solution Approach 1:
The patent segments the cooling function by providing individual air flow paths and cooling zones for each lamp or lamp group. The housing design includes multiple air intake openings and distribution channels that deliver cooling air to each lamp independently, allowing temperature control of multiple lamps without the complexity of a single centralized cooling system. This segmented approach manages heat generation from multiple high-output lamps effectively.
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 system maintains UVC output at or near maximum levels, achieving twice the output of uncooled lamps and 60% higher than conventional systems, effectively killing pathogens in air and on surfaces while preventing overheating.
Implementation Method 1
Uniformly flowing air cools the lamps to maximize the conversion efficiency of power input to the lamps to UVC radiation from the lamps
Implementation Method 2
The housing side walls have their outer surfaces oxidized or otherwise coated to maximize the reflectance of UVC radiation
Implementation Method 3
UVC radiation is ultraviolet radiation having wavelengths in the shortwave C band and radiation in that band having a wavelength of 253.7 nm is reorganized to provide effective germicidal action
Data Source
AI summary
The present invention provides an ultraviolet radiation system which generates UVC radiation with maximal radiation output and little or no degradation in radiation output during operation of the lamps. The system provides UVC radiation at a wavelength of 253.7 nm, which is effective to kill or deactivate pathogens on surfaces irradiated by the emitted UVC radiation and is simultaneously effective to decontaminate air which passes uniformly over the entire length of the UVC lamps. Uniformly flowing air cools the lamps to maximize the conversion efficiency of power input to the lamps to UVC radiation from the lamps, and at the same time decontaminates the flowing air such that air in the room is also decontaminated.