Anti-Shadowing Ultraviolet "C" (UV-C) Virus Irradiation and Deactivation Chamber with Ozone Re-circulation and Neutralization

A method for disinfecting and/or decontaminating air contaminated by airborne viruses safely in the presence of people in an environment, comprising:

• (a) drawing said air using one or more fans through a uni-directional airflow passageway,
• (b) directing said air from said airflow passageway into one or more chambers, wherein each of said one or more chambers is equipped with multiple UV C light sources, and
• (c) decomposing ozone produced by said UV-C light sources back into oxygen, and
• (d) discharging decontaminated air from step (c) into said environment.

A virus irradiation and deactivation device comprising,

• an opaque enclosure, said enclosure having an air ingress port and air egress port, said air ingress port connected to a hot zone conduit,
• a first-pass conduit, said first-pass conduit joined at a junction to said hot zone conduit wherein a non-return airflow flap is disposed at said junction, said first-pass conduit having a recirculation aperture,
• a first UV-C source, said first UV-C source positioned in said first-pass conduit,
• said first pass conduit connected to a single bombardment chamber or a first bombardment chamber of a plurality of bombardment chambers which are connected in series, said plurality of bombardment chambers having a first bombardment chamber and a last bombardment chamber, said first bombardment chamber having a plurality of UV-C sources,
• a pressure optimized fan positioned to draw air sequentially into said first-pass conduit, into said single bombardment chamber or said plurality of bombardment chambers, and to a bifurcation valve or flap, said bifurcation flap connected either to said single bombardment chamber or to the last bombardment chamber in the plurality of bombardment chambers, said bifurcation valve or flap configured to direct airflow to either a recirculation conduit or to an exit conduit, said exit conduit terminating at said egress port,
• said recirculation conduit further connected to said recirculation aperture wherein air directed into said recirculation conduit from said bifurcation valve or flap re-enters said first-pass conduit,
• means for controlling fan speed and power to the UV-C sources, coordinating opening and closing of the valves and/or flaps,
• means for providing electrical power to the device.