| 摘要 |
An air purification apparatus is disclosed that includes a HEPA or ULPA cartridge filter having mounted axially therein an UV lamp extending from a closed end of the cartridge. An air channeling housing is provided for removably mounting the combination filter and lamp assembly for ingress of an air stream through the open end of the combination filter and lamp assembly and for egress of the air stream through the filter medium. A fan can be mounted in the housing either upstream or downstream of the combination filter to provide the means for flowing air through the housing for decontamination by both the filter and UV irradiation provided by the combination filter and lamp assembly. With this arrangement, all contaminants trapped on the filter are within the combination filter and lamp assembly for constant illumination by the UV lamp to destroy bacteria both in the incoming air stream and while resident on the interior of the filter assembly. As disclosed, when the apparatus is installed in an air stream, the air moves into the tubular filter where contaminants are killed by the UV lamp either before or after capture on the interior of the tubular filter before egress through the filter medium.
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