Portable UV Sterilization Unit
The COVID-19 pandemic exposed a critical gap in readily available disinfection methods. This innovative UV disinfection device addresses this challenge by offering a dry and material-safe solution. Unlike existing methods that may damage equipment or be ineffective, UV disinfection eliminates pathogens without harming delicate surfaces. Developed using readily available materials, the technology demonstrates its rapid deployment adaptability during crises. Furthermore, the technology builds upon established scientific knowledge regarding the effectiveness of UV radiation against viruses. This technology offers the potential to expand access to disinfection beyond traditional healthcare settings, potentially impacting public health efforts positively.
The rapid spread of the Coronavirus pandemic (COVID-19) resulted in millions of deaths worldwide. The innovator identified a critical gap in available sanitation methods during the initial outbreak of COVID-19. While solution-based sanitizers (alcohols, sodium hypochlorite, steam, etc.) are widely used, they can damage certain electronic equipment and supplies. Additionally, there was a general lack of commercially available devices designed to decontaminate objects. Hence, there was a strong need to develop a dry and material-safe disinfection method.
- This invention offers a dry disinfection method, unlike some methods that can damage equipment or be ineffective (alcohol-based sanitizers on phones, autoclaves on masks).
- Experiments using MS2 phage and E. coli demonstrate the unit's ability to eliminate these pathogens within 180 seconds (3 minutes) by delivering a sufficient UVC dose.
- Scientific research supports the effectiveness of ultraviolet C light in inactivating various emerging viruses, including severe acute respiratory syndrome coronavirus, Crimean-Congo hemorrhagic fever virus, and Nipah virus. This suggests the potential for the unit to be effective against a broader range of pathogens beyond those directly tested.
- Interior Design: The unit features a horizontal, cylindrical chamber made of stainless steel with a highly reflective inner surface to maximize UVC radiation effectiveness. This chamber measures approximately 36 cm in length and 25 cm in diameter. Two vertical stands hold the chamber in place, with front and back plates covering the gaps between them for stability.
- UV Light Source: The cabinet utilizes germicidal ultraviolet (UVC) light with a wavelength of approximately 254 nanometers to inactivate microorganisms. Two germicidal UVC tubes, each measuring 11 watts and 225 millimeters long, are mounted inside the cabinet. These tubes are positioned approximately 18 centimeters from the center of the rack to ensure optimal UVC exposure.
- Power Supply: The UV lamps are powered by an AC choke (electronic ballast) that operates on a standard voltage range of 220-240 volts at 50 Hertz.
- Safety and Convenience: The unit incorporates a hinged side door with a latch for closing for user safety. A small window with UV protective glass lets users view the light's on/off status without exposure. Additionally, a wire mesh rack is included to hold objects during disinfection. The document recommends a stainless steel rack with a larger mesh size for improved usability with various objects.
The portable UV cabinet finds applications in various sectors, including disinfecting medical instruments and equipment in healthcare settings, sterilizing labware and research materials in research laboratories, and sanitizing utensils and food packaging in the food service industry. In addition to the above, the cabinet sterilizes everyday household items like keys, keychains, cellphones, and wallets, making it suitable for domestic use.