AEROSOL SAMPLING AND CONCENTRATING DEVICE Russian patent published in 1994 - IPC

FIELD: environment control. SUBSTANCE: inlet flow and evacuated air flow are ring-shaped. Aerosol flow is sucked in through accelerating nozzle formed by cylindrical case wall and disk mounted coaxially in respect to case in a spaced relation. 90% of air is evacuated through outlet pipe connection and remaining portion is discharged through intake pipe mounted within case coaxially in respect to disk. Particles whose aerodynamic size is greater than specified value are entrapped by pipe. EFFECT: improved capacity of aerosol flow. 3 dwg