Omnidirectional aerosol sampling intake
AssigneeEnertechnix, Inc.
InventorsIgor V Novosselov, Peter C Ariessohn
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Abstract
An aerosol sampling intake configured to exclude particles generally greater than 20 microns AD and capture particles of less than about 10 microns AD with high efficiency, independent of weather conditions, through which air is sampled by suction. The intake combines an omnidirectional horizontal segment with diffuser and elbow, the elbow transitioning flow to a vertical segment, the vertical segment with overhanging lip, the centrifugal impactor for self-cleaning operation, thus relieving the dual problems of re-entrainment of particles bouncing from the impactor surface and fouling by particles sticking to the impactor surface. The device is adapted for use on moving vehicles, for sampling at increased windspeeds, or for sampling in rain.
Claims9
An omnidirectional wind- and rain-resistant sampling intake for collecting an information-rich airborne particle fraction, which comprises a bonnet plate and a baseplate, wherein the two plates are spaced apart to form an internal manifold with flowpath therebetween and are separated by an inlet slot all around, said internal manifold having an outlet port on a center axis, a first inside surface formed by said bonnet plate and a second inside surface formed by said baseplate, said internal manifold for directing a suction airflow from said inlet slot to said outlet port along said flowpath between said inside surfaces and for separating information-rich particles and information-poor particles therein, wherein said internal manifold comprises:
- a) a horizontal flow section for ordering said airflow into horizontal streamlines and for elutriatively removing a first cut of said information poor particles from said suction airflow;
- b) a first centrifugal impactor section fluidly joining said horizontal flow section to said outlet port, said first centrifugal impactor section for impactingly removing a second cut of said information poor particles from said suction airflow.
Dependencies are inferred from the claim text.