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.

Abstract: An integrated air filtration unit includes a support structure for mounting a V-shaped filter bank to an air passage of an air handling system. The V-shaped filter bank may be moved from a working position in which the air is filtered to a service position in which a pair of filter pads in the filter bank can be accessed for service or replacement. The integrated air filter unit may include an ultraviolet irradiation system for destroying airborne micro-organisms trapped by the pair of filter pads.

Abstract: A quick-install irradiation unit for irradiating a surface includes an adapter that accepts a frame for supporting an ultraviolet lamp with a reflector or a lens for focusing the radiation on the surface. The unit may include a housing secured to one end of the frame containing a drive motor and a cam assembly which oscillate the reflector, if the radiation is focused on a predefined area of the surface at any given time. The unit can be quickly installed in any orientation on practically any flat surface.

Abstract: An integrated air filtration unit includes a support structure for mounting a V-shaped filter bank to an air passage of an air handling system. The V-shaped filter bank may be moved from a working position in which the air is filtered to a service position in which a pair of filter pads in the filter bank can be accessed for service or replacement. The integrated air filter unit may include an ultraviolet irradiation system for destroying airborne micro-organisms trapped by the pair of filter pads.

Abstract: A power supply for an electrostatic air filtration unit includes an input stage, an isolation stage and an output stage. The isolation stage electrically isolates the output stage from the input stage. The output stage includes an output amplifier driven through the isolation stage by the oscillator. The output stage further includes a voltage regulator to inhibit the output voltage from exceeding a predetermined maximum voltage. The output of the power supply is insensitive to over-voltage swings in the input power to inhibit spark-over induced damage to the power supply. The power supply is encased in a resin to extend the operational life of the power supply by inhibiting tampering and intrusion of water, and enhancing resistance to corrosion and microbial damage.

Abstract: A power supply for an electrostatic air filtration unit includes an input stage, an isolation stage and an output stage. The isolation stage electrically isolates the output stage from the input stage. The output stage includes an output amplifier driven through the isolation stage by the oscillator. The output stage further includes a voltage regulator to inhibit the output voltage from exceeding a predetermined maximum voltage. The output of the power supply is insensitive to over-voltage swings in the input power to inhibit spark-over induced damage to the power supply. The power supply is encased in a resin to extend the operational life of the power supply by inhibiting tampering and intrusion of water, and enhancing resistance to corrosion and microbial damage.

Abstract: A quick-install irradiation unit for irradiating a surface includes an adapter that accepts a frame for supporting an ultraviolet lamp with a reflector or a lens for focusing the radiation on the surface. The unit may include a housing secured to one end of the frame containing a drive motor and a cam assembly which oscillate the reflector, if the radiation is focused on a predefined area of the surface at any given time. The unit can be quickly installed in any orientation on practically any flat surface.

Abstract: Structures for V-bank electrostatic air filters are described. The V-bank air filters are assembled from two side panels, perforated top and bottom plates, a narrow end wall and an open wide end for the intake of air to be filtered. A pair of enclosure plates are pivotally mounted to the side panels in a parallel relationship to the respective top and bottom plates to form a pair of rectangular enclosures for respectively supporting electrostatic filter pads. The enclosure plates pivot open for removal and replacement of the filter pads. The side panels, top and bottom plates and rear wall are made from sheet metal blanks using cutting, bending and stamping processes. The enclosure plates are made from sheet metal blanks or welded wire structures. The advantage is that the structures are manufactured using simple automated processes and are quickly assembled without sub-assembly, thus time and labour are saved and costs are reduced.