Ambient aerosol sampler inlet
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United States of America Patent
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Jul 24, 1984
Grant Date -
N/A
app pub date -
Mar 5, 1982
filing date -
Mar 5, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ambient aerosol sampling device according to the disclosure herein includes a cyclonic fractionator comprised of an inner tube positioned partially inside a larger diameter middle tube that is plugged at the bottom. A still larger sized outer tube is positioned over the middle tube to receive air flow out of the middle tube and direct it to a conventional filter substrate. A plurality of vanes are positioned at the inlet of the inner tube to impart a vertical motion to an air stream flowing therein. A protective cover is positioned over the vanes and cyclonic fractionator, and an aerodynamic deflector at the bottom of the cover and air ramp inside the cover provides an omni-directional inlet pathway to draw air into the sampling device and to guide the airstream into the vanes.
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