초록 ▼

Room air is pulled from an inlet into a pre-filter duct and moved therethrough and through a main filter duct to an outlet in the room or some other location. The flow path is through a pre-filter unit, blower, germicidal light unit, and HEPA or ULPA filter unit to the outlet. Each of the units is r

Room air is pulled from an inlet into a pre-filter duct and moved therethrough and through a main filter duct to an outlet in the room or some other location. The flow path is through a pre-filter unit, blower, germicidal light unit, and HEPA or ULPA filter unit to the outlet. Each of the units is readily replaceable and is furnished with a bio bag. The ducts have access openings in the duct wall at the unit locations. The access openings have flanged collars, with removable covers thereon. For installation of a unit, the bio bag is opened and secured to the flange, followed by removal of the flange cover. Then the unit is installed in the duct, the cover re-installed on the flange, and the bag rolled up in place, still attached to the flange, and remains so during operation of the apparatus and during removal of the unit at the end of its useful life, and then is used to encapsulate the used unit for disposal of the unit, to protect the service personnel from exposure to contaminants. Pneumatic actuators are used to move the HEPA filter into position in the duct where it is gel-sealed against a knife edge at the inner end of the pre-filter duct. The ducts are inside a sound-insulated outer cabinet which has access doors adjacent flanged openings at each of the filter units.

대표청구항 ▼

[ What is claimed is:] [1.] Air decontamination apparatus comprising:a cabinet having an inlet for contaminated air and an outlet for cleaned air;a duct assembly inside the cabinet and having an air inlet associated with the cabinet inlet and having an outlet associated with the cabinet outlet for c

[ What is claimed is:] [1.] Air decontamination apparatus comprising:a cabinet having an inlet for contaminated air and an outlet for cleaned air;a duct assembly inside the cabinet and having an air inlet associated with the cabinet inlet and having an outlet associated with the cabinet outlet for cleaned air;a blower in the duct assembly and arranged to move air from the inlets, through the duct assembly and out through the outlets;a first filter in the duct assembly upstream from the blower;a germicidal light generator in the duct assembly downstream from the blower;a final filter in the duct assembly and arranged to filter all of the air passing through the duct assembly to the outlets;a bag associated with at least one of the filters to facilitate removal of the filter from the duct assembly without exposure of the filter to the environment outside the duct assembly;wall openings in the duct assembly adjacent the filters;flanges around the wall openings; andclosures on the flanges;the bag associated with the one filter having an end secured around the flange at the opening adjacent the filter, with the closure inside the bag, whereby the closure can be removed from the end of the flange, and then the filter can be removed from the duct assembly into the bag, and then the closure can be re-installed on the flange without air communication between the interior of the duct assembly and the environment outside the duct assembly at the wall openings.