Abstract: A convertible air cleaner comprising an elongated enclosure forming an internal cavity. A first opening is at one end of the enclosure and a second opening is at an opposed end of the enclosure and with the openings oriented substantially at 180.degree. from each other. A support structure holds the elongated enclosure at a substantially center axis between said first and second openings. A pivot permits rotation about said center axis between said first and second openings through an arc of at least 180.degree.. An air filter is contained within the enclosure and a fan is positioned within the enclosure for drawing air through said first opening through the internal cavity for filtration by the air filter for exiting to the exterior of the enclosure through the second opening.

Abstract: suspended air purifier fixture including, a radially-symmetrical enclosure forming an internal cavity and including a peripheral surface having a plurality of circumferential openings and a lower surface with a central opening perpendicular and adjacent to the peripheral surface. A centrifugal fan is located within the enclosure and is coaxial with the central opening. An intake assembly is coaxial with the central opening and includes a vane for directing an intake flow of air through the assembly and into the enclosure through the central opening. An air filter is circumferentially disposed relative to the fan and occupies the space between the vane and the peripheral surface. An output grille covers the circumferential openings to have an exhaust air flow perpendicular to the intake thorugh the central opening. Suspension means are located at the surface of the enclosure opposite to the lower surface for supporting the fixture from an overhead position.