Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.

Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.

Abstract: Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation pump and supply line, a wet tank, a ultrasonic transducer, ultraviolet submersible bulbs, a water fill port, a liquid level sensor, a liquid and sediment drain port, and a power source. A preferred embodiment includes a subsonic transducer on the wet tank. A preferred embodiment includes a air diffuser, a toxic and noxious gas detection and recognition and radiation detection with automatic safety shut down and audible and visual alarm, a ultraviolet saturation chamber. A preferred embodiment includes a secondary wet filter, a secondary air diffuser, a secondary ultraviolet saturation chamber. A preferred embodiment includes a inline dryer assembly.

Abstract: A new and improved air purifying apparatus having a housing that is adapted to be mounted in-line with an air duct, such as a return air duct of an air-conditioning system. The housing is designed for easy installation without modifying the existing air-conditioning duct work. An ultraviolet light-emitting device is positioned within the housing for radiating the air passing through the return air duct with UV-C and UV-V radiation to destroy air borne chemical and biological odors, bacteria, and microorganisms. A high flow pleated air filter is provided and is removably positioned within the housing for removing air borne particulate material such as dust and pollen.

Abstract: A main body of exhaust cleaning system 15 is arranged in a hood 8 that is connected to an exhaust duct 14 at an upper part and is opened at a bottom face. A grease filter 23 is arranged at a side plate of a main body case 18 having an inlet 19 into which an exhaust air 5 flows. A filter 33 formed in an endless belt shape by gathering stainless steel wires and the like is attached to rotary shafts 25a, 25b provided to freely rotate in the main body case 18. The filter 33 adheres to the grease filter 23 and a discharge opening 10 through which the exhaust air 5 flows, and is partially immersed in a cleaning liquid 40 in a cleaning liquid tank 22 provided at a lower part of the main body case 18. The exhaust air 5 flowing from the inlet 19 through the grease filter 23 is flown through the rotationally moving filter 33, is flown again from a space 36 through the filter 33, and is discharged after being cleaned. A cleaning of the exhaust air 5 and a cleaning of the filter 33 can be done at a time.

Abstract: An exhaust gas cleaner includes an exhaust gas introducing member having an exhaust gas inlet port into which an exhaust gas is introduced and an exhaust gas outlet port through which the exhaust gas is discharged, an endless filter member provided across the exhaust gas outlet port, a filter member driving device which circulates the filter member across the exhaust gas outlet port, and a filter member cleaning device which cleans the filter member in a position apart from the exhaust gas outlet port. An exhaust gas cleaner assembly includes a plurality of exhaust gas cleaners as described above, and the exhaust gas inlet ports of the exhaust gas introducing member of the exhaust gas cleaners are provided mutually in series. Another exhaust gas cleaner assembly includes a plurality of exhaust gas cleaners as described above, and the exhaust gas inlet port of the exhaust gas introducing members of the exhaust gas cleaners are provided mutually in parallel.

Abstract: This invention relates to an air filtration system including four principle segments interconnected in series as one unit through which contaminated air is passed. The first segment includes a prefilter for the removal of dust particles; the second segment is provided with germicidal UV lamps for bacteria removal; the third segment contains a medicated wet filtration system for virus removal, and the fourth segment contains a final carbon filter.