Air purification system utilizing ultraviolet radiation

Claim 1

A portable air purification system utilizing ultraviolet radiation comprising an upstanding elongated metallic enclosure having a lower inlet and an upper outlet for the passage of air, fan means mounted within said enclosure between the inlet and outlet to cause the movement of air therebetween, a metallic cap member mounted over said outlet, said cap member having downturned edges spaced from said elongated enclosure to form an air passageway directing the flow of air downwardly, a base member comprising a hollow metallic enclosure mounted on casters, said base member being joined to said upstanding enclosure at the inlet end thereof, filter means positioned within said base member to remove particles of impurities contained in the air passing therethrough, said filter means comprising a metallic mesh pre-filter and a sub-micron laminar flow cell, said sub-micron laminar flow cell being constructed of fiberglass and paper with a porosity sufficiently small to cause particles with diameters larger than 0.3 microns to be trapped by said flow cell, a plurality of high intensity ultraviolet tubes vertically mounted within said enclosure in position to expose all air passing therethrough to ultraviolet radiation, a peep-hole provided with optical filter means positioned in said elongated enclosure to enable inspection of said ultraviolet tubes while in operation, whereby straight-line air flow is maintained with particulate materials being removed from the air by the filter means and microorganisms being killed by ultraviolet radiation to produce a clean air environment with complete suppression of ultraviolet radiation.