Deep Ultraviolet Laser Net Filtration for Airborne Pathogen Killing
Solution Overview
Problem
Existing technologies for killing pathogenic microorganisms in the air using laser technology face issues such as laser leakage, low energy leading to poor disinfection, high costs, complexity, and the generation of secondary pollutants.
Innovation Solution
A filtering device utilizing a deep ultraviolet laser with a wavelength between 200 nm and 400 nm, which forms a dense and regular laser net through multiple reflections, effectively killing pathogenic microorganisms without generating secondary pollutants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional air purifiers are used to purify air in enclosed environments, then pathogenic microorganisms can be adsorbed, but the disinfection and sterilization effect is poor because they cannot effectively kill the microorganisms
Solution Approach 1:
The patent changes the wavelength parameter of the light source to deep ultraviolet range (200-400nm), which has sufficient energy to kill pathogenic microorganisms by damaging their DNA/RNA, thereby resolving the contradiction between adsorption capability and killing efficiency
Solution Approach 2:
The patent replaces the mechanical adsorption method with a deep ultraviolet laser irradiation method, using optical energy to directly kill microorganisms, thus achieving both high reliability and high productivity in disinfection
2Reliability
If high-power air purification equipment is installed in large places, then the disinfection coverage is improved, but the construction cost and power consumption are greatly increased
Solution Approach 1:
The patent segments the air purification function into modular units that can be distributed throughout the space, with each unit containing a deep ultraviolet laser module that independently disinfects the air in its vicinity, achieving wide coverage without requiring high-power centralized equipment
Solution Approach 2:
The patent employs periodic pulsing of the deep ultraviolet laser to achieve disinfection coverage over time, allowing the system to maintain effective disinfection with lower average power consumption compared to continuous high-power operation
3Reliability
If conventional laser technology is used to kill pathogenic microorganisms in the air, then disinfection can be achieved, but laser leakage occurs causing harm to human bodies
Solution Approach 1:
The patent introduces a light guide tube as an intermediary component that confines and directs the deep ultraviolet laser beam, preventing laser leakage into the surrounding environment while maintaining effective disinfection capability within the intended treatment zone
Solution Approach 2:
The patent uses the light guide tube structure to contain the laser energy, creating a controlled pathway that prevents harmful laser radiation from escaping while allowing the disinfection function to operate effectively
4Reliability
If conventional laser equipment is used for air disinfection, then pathogenic microorganisms can be killed, but the equipment cost is high and the device is complex
Solution Approach 1:
The patent extracts only the essential deep ultraviolet laser generation function from complex conventional laser systems, using a simplified laser diode combined with a light guide tube to achieve the same disinfection effect with much lower cost and complexity
Solution Approach 2:
The patent employs inexpensive deep ultraviolet laser diodes with lifetimes sufficient for practical application, replacing expensive conventional laser equipment while maintaining effective disinfection capability
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 device significantly enhances disinfection and sterilization efficiency, reduces equipment costs, and meets various use demands, including all-weather use, while being simple, safe, and efficient.
Implementation Method 1
the deep ultraviolet laser is totally reflected for multiple times by the deep ultraviolet laser module to form a dense and regular deep ultraviolet laser net
Implementation Method 2
A filtering device utilizing a deep ultraviolet laser with a wavelength between 200 nm and 400 nm, which forms a dense and regular laser net through multiple reflections
Data Source
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AI summary
A filtering device for killing pathogenic microorganisms using deep ultraviolet laser is provided, including a main body and a deep ultraviolet laser module, the main body is configured for accommodating gas having pathogenic microorganisms; the deep ultraviolet laser module is connected to the main body and configured for totally reflecting the deep ultraviolet laser for multiple times to form a dense and regular deep ultraviolet laser net, such that the gas is filtered in the dense and regular deep ultraviolet laser net to achieve the killing of the pathogenic microorganisms in the gas. The deep ultraviolet laser module includes a deep ultraviolet laser apparatus and a reflection adjusting assembly, the deep ultraviolet laser apparatus is connected to the main body, and the reflection adjusting assembly is configured for adjusting the density of the deep ultraviolet laser net.