CPC A61L 9/20 (2013.01) [G01P 13/00 (2013.01); A61L 2209/12 (2013.01)] | 25 Claims |
1. A method of treating a space, the method comprising the steps of:
obtaining an air treatment unit comprising:
a frame; and
a source of UV light,
the frame configured to define a primary treatment volume with an axis,
the frame further comprising an air guidance assembly,
the air treatment unit configured so that air within the primary treatment volume is guided by the frame to move radially outwardly from the primary treatment volume through a dispersion angle,
air within the primary treatment volume exposed to UV light rays from the UV light source so that air that moves radially outwardly from the primary treatment volume is disinfected; and
changing the air treatment between: a) a first state wherein a predetermined part of a volume of space outside of the air treatment unit and within which the air treatment unit resides is strategically blocked from direct exposure to UV light rays generated by the UV light source; and b) a second state wherein at least a portion of the predetermined part of the volume of space is directly exposed to UV light rays from the UV light source,
wherein the air treatment unit has a top and a bottom spaced axially from the top,
wherein with the air treatment unit in the second state at least part of the at least portion of the predetermined part of the volume of space that is directly exposed to UV light rays from the UV light source is below the air treatment unit.
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