Particle classifier

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6442821

Etkin, B

This patent describes a classifier for particulate material comprising a housing having an inlet to receive a classifying air flow flowing in a given direction, collection means downstream of the inlet to receive material classified by the air flow, and material introduction means intermediate the inlet and the collection means to introduce particles entrained in a secondary air stream into the housing in a direction other than the given direction. The material introduction means includes a material outlet aperture in a wall of the housing extending generally perpendicular to the given direction, conveying means to convey material and the secondary air stream to the material outlet and diverting means to divert the secondary air stream to a direction generally parallel to the classifying air flow flowing in the given direction. The diverting means includes a surface extending downstream from the outlet and adjacent thereto and being dimensioned to divert the secondary airstream by a Coanda effect generally parallel to the given direction and thereby segregate the secondary air/stream from the particles and permit continued movement of the particles along predictable trajectories.

• Assignee: University of Toronto Innovations Foundation, Toronto
• Patent Number(s): US 4657667
• OSTI ID: 6442821
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION CONTROL
APERTURES
CONTROL
DESIGN
EQUIPMENT
FLUID FLOW
GAS FLOW
INTAKE STRUCTURES
MECHANICAL STRUCTURES
OPENINGS
OPERATION
PARTICLE SIZE CLASSIFIERS
PARTICLES
PARTICULATES
POLLUTION CONTROL
SEPARATION PROCESSES
TRAJECTORIES