Patent ID: 6471738
Filing Date: 2002-10-29
Classification: B01D,F24F

Abstract:
An air filtration device comprising:a housing comprising a non-air communicating upper surface part and a lower part, wherein the upper and lower parts are parallel and spaced apart from each other and define a cavity therebetween, wherein the lower part has a centrally positioned opening therein, and, wherein the upper part of the housing is suspended from, or flush mounted to a supporting surface; a rotary motor having a rotating shaft which defines an axis of rotation, wherein the motor is positioned such that the axis of rotation is co-linear with an axis of the housing; an impeller positioned in the cavity coaxially with the axis of the motor and attached to the motor, said impeller having a plurality of blades that curve away from the direction of rotation; a filter positioned between the upper and lower parts and positioned around a perimeter of the cavity; and a lighting fixture attached to the lower part of the housing, said fixture providing for positioning of a light emitting element therein, and directing unfiltered airflow away from, and not towards and over the light emitting element.