Rotary kinetic fluid motors or pumps – Plural runners having different type flow paths
Patent
1985-07-23
1988-03-15
Joyce, Harold
Rotary kinetic fluid motors or pumps
Plural runners having different type flow paths
55409, 415168, 415DIG8, F04D 2900
Patent
active
047309806
ABSTRACT:
An air supply system includes an air accelerating chamber formed by truncated conical intake and exhaust ducts joined at the truncated ends to be coaxial. The system also includes a fan impeller having a hollow cylindrical hub with impeller blades on the outer periphery and is rotatably mounted in the exhaust duct to provide a first accelerated air stream passing between the exhaust duct and hub, and a second accelerated air stream passing through the hub. Pressurized gas, such as combustion gases from an internal combustion fan drive, can be admitted to the intake duct to produce swirl, and additional impeller blades can be provided in the interior of the hub to further accelerate the second air stream.
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