Patent ID: 6955708
Filing Date: 2005-10-18
Classification: B03C,F24F,Y02A

Abstract:
1. An air-treatment apparatus, comprising: a housing enclosing an interior space, the housing defining an air-intake opening through which air enters the interior space for treatment, and an air-output opening through which treated air exits the interior space; a gas-filter assembly situated within the interior space so as to receive air entering through the air-intake opening, the gas-filter assembly being permeable to air-flow therethrough and comprising a dual-media filter element, the dual-media filter element comprising a matrix of fibers to which particles of activated carbon are adhered at mutual points of contact without using an extraneous binder, the particles of activated carbon being configured to adsorb compounds including volatile organic compounds from the air as the air passes through the gas-filter assembly; and at least one electrostatic 3-dimensional (E3D) filter assembly situated within the interior space downstream of the gas-filter assembly so as to receive and pass air that has passed through the gas-filter assembly, each E3D filter assembly comprising a respective charging element sandwiched between respective dielectric-fiber filters that are sandwiched between two respective electrically conductive screens that are electrically grounded, the charging element being electrically conductive and being connected to a source of high-voltage DC power so as to impose electrical potentials on the fibers of the dielectric-fiber filters sufficient to polarize and attract particles in the air passing through the at least one E3D filter assembly.