Aerosol Generation for Stable, Low-Concentration Delivery

A feed aerosol comprising detectable particles is injected into a mix-enhancing swirler. Diluting gas is also injected into the mix-enhancing swirler and mixed with the feed aerosol in a swirling motion to form an aerosol with a particle concentration no greater than 1,000 particles per liter. The a...

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Main Authors LINNELL JESSE ALLEN, DAI ANLONG, VIAN TRINA RAE, SEBASTIAN THOMAS, EVERSOLE JAY D, MORENCY JOSEPH RENARD, LACIRIGNOLA JOSEPH JOHN, BURY MARK ERIC, AGUILAR CARLOS ANDRES
Format Patent
LanguageEnglish
Published 09.04.2015
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
NOZZLES
PERFORMING OPERATIONS
PHYSICS
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TESTING
TRANSPORTING
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Summary:A feed aerosol comprising detectable particles is injected into a mix-enhancing swirler. Diluting gas is also injected into the mix-enhancing swirler and mixed with the feed aerosol in a swirling motion to form an aerosol with a particle concentration no greater than 1,000 particles per liter. The aerosol is then injected into a mixing chamber, where the aerosol is mixed and dried; the inner diameter of the mixing chamber is at least twice as great as that of the swirl chamber. The aerosol is then emitted through a flow straightener that removes swirl from the flow of the aerosol and passed through a delivery conduit, where the particles are detected and counted; and the particle count is compared with a target count. The respective flows of feed aerosol and diluting gas can then be increased or decreased based on a comparison of the particle count with the target count.
Bibliography:Application Number: US201414510262