Method of filtering air

摘要

A method for filtering air of about 1 to about 10 microns particles at a greater than 40% filtering efficiency is provided. The method includes providing an air filtering device having a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve; and activating the device for at least about 20 minutes.

主权项

1. A method of filtering air comprising the steps of:
a. providing an air filtering device in a room, wherein said device comprises
a base having an air inlet and an air outlet;a fan functionally attached to said base, wherein said fan moves from about 70 CFM to about 150 CFM of air through said air outlet, at about 15 to about 25 Pa of pressure, when said fan is activated;an air filter in air flow communication with said air outlet;a substantially air impermeable outer sleeve comprising a first open end, a second open end, and an air flow path therebetween, wherein said outer sleeve is in air flow communication with said air outlet and wherein the outer sleeve is releasably attached to said base at said first open end, and wherein said outer sleeve envelops said air filter around its longitudinal axis; wherein the exit velocity of a volume of air exiting said second open end of said outer sleeve is from about 0.6 m/s to about 2.6 m/s when said device is activated; and b. activating said device for a period of at least about 20 minutes whereby greater than 40% of particulates that have a size from about 1 micron to about 10 microns are removed from the air in said room.