Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply
Patent
1986-08-01
1987-04-07
Terapane, John F.
Fluid sprinkling, spraying, and diffusing
With system fluid relief or return to supply
239143, 239325, B05D 714, B05D 900
Patent
active
H00002577
ABSTRACT:
A dry powder aerosolizer for both dispersing and investigating the propers, behavior and measurement of airborne particles has a cylinder and a piston head dividing the cylinder into first and second sub-chambers. The first sub-chamber contains a quantity of dry powder and the second sub-chamber has an inlet opening in communication with an input flow controller admitting pressurized air flowing into the first sub-chamber about the periphery of the piston head to aerosolize the dry powder. The aerosolized powder exits the aerosolizer through a flow control tube extending through a square shaft to which the piston head is mounted. An opposite end of the square shaft extends through a Pelton turbine wheel to which a tangential flow of pressurized air is introduced from the input flow controller to cause rotation of the piston head. The input flow controller has a critical orifice and a use passage with appropriate valving connecting the orifice to the aerosolizer to provide a motive source of pressurized air to the turbine wheel and a supply of aerosolizing air to the first sub-chamber under constant pressure conditions.
Barditch Irving F.
Rauer Ronald M.
Costigan Edward F.
Gibson Robert P.
Jorgensen Eric
Lane Anthony T.
Terapane John F.
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