Air-treatment apparatus and methods
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United States of America Patent
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Oct 18, 2005
Grant Date -
N/A
app pub date -
Dec 6, 2004
filing date -
Aug 13, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Air-treatment apparatus and methods are disclosed that are especially suitable for treating the air in a room or other dwelling or working space. An apparatus embodiment of the subject apparatus includes a housing having air-intake and air-output openings. A gas-filter assembly inside the housing receives air entering the air-intake opening and includes a dual-media filter element having a matrix of fibers to which particles of activated carbon are adhered at mutual points of contact without using an extraneous binder. As air passes through the gas-filter assembly, the carbon particles adsorb odor compounds from the air. At least one electrostatic 3-dimensional (E3D) filter assembly downstream of the gas-filter assembly includes a respective charging element sandwiched between dielectric-fiber filters sandwiched between two respective electrically conductive screens. The screens are electrically grounded while the charging element (which is conductive) is connected to a source of high-voltage DC power. The resulting charges on fibers of the dielectric-fiber filters polarize and attract particles in air passing therethrough.
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