variable upper-room UV germicidal irradiation system for both air and surface disinfection of commercial space.

Patent Pending ‘Variable Upper Room Ultraviolet Germicidal Irradiation system (Variable UR UVGI)’ is the innovated form of conventional UR UVGI system. This conventional system was recently launched to global market under Signify(Philips Lighting) which see growth potential of Upper Room UVGI system among UV disinfection market. Comparing with the conventional UR UVGI system, recommended as a supplement to help inactivate COVID-19 by CDC and included into the integrated package of infection prevention and control by WHO, the followings are the main superior features of our Variable UR UVGI equipment. 1. Preventing contact infection transmission Unlike conventional UR UVGI limited to prevent airborne transmission by irradiating UVC to upper portion of living space, the proposed product has an additional function of optionally irradiating whole living space under unoccupied condition so that it can also disinfect the surface of contact transmission route. 2. Increase of disinfection efficiency Not together with mechanical air circulation like ceiling fan, conventional UR UVGI relying on natural convection can’t remove 25~30% of pathogens because pockets of air never rose into the path of the ultraviolet rays. Therefore, the proposed product is equipped with air movement fan which induces the lower indoor air to flow into UV irradiation layer. 3. Ease of use Above no.1 function is operated with safety measures such as warning signal, delayed start and motion detector. And it is operated manually by the remote controller or automatically during set time period, then backed to the default function, upper room UV irradiation mode. Fundamentally our variable UR UVGI equipment prevents airborne transmission under occupied normal living environment and lowers the risk of contact transmission under unoccupied condition as well. Therefore, the demand from various facilities is highly expected as a general infection control equipment which can deal with 2 main infection routes in the with-corona era.