Patent ID: 8734724
Filing Date: 2014-05-27
Classification: A61L

Abstract:
1. An air purifier apparatus comprising: a housing; a pre-filter coupled to an air inlet of the housing, the pre-filter configured to remove particulates from air drawn into the air inlet; a fan in the housing to pass the air through the pre-filter; a first radial louver in the housing, the first radial louver for receiving air from the pre-filter and promoting a spiral flow of the air from the pre-filter, the first radial louver providing the spiral flow of the air around a UV light source in a UV reaction chamber, the UV light source providing UV light to the spiral flow of the air from the first radial louver, the UV reaction chamber having a reflective lining to reflect the UV light and to provide UV purified air from the UV reaction chamber; a chemical catalyst cartridge in the housing, the chemical catalyst cartridge for receiving the UV purified air from the UV reaction chamber, and for further purifying the UV purified air with a chemical catalyst; a post filter coupled to an air outlet of the housing to output purified, filtered air; and a controller circuit including a lamp ballast for controlling the UV light source, the controller circuit includes an astable multi-vibrator circuit for rapidly driving the gates of one or more transistors to operate the lamp ballast.