Device for deriving energy from a flow of fluid

Details Device for deriving energy from a flow of fluid Device for deriving energy from a flow of fluid

1980-08-25

1982-12-07

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416236A, F03D 106

Patent

active

043624693

ABSTRACT:
Improved process and device for extracting energy present in a flowing fluid medium wherein a supported hub with propellers or blades is placed in said medium and the blades are provided with a wing or vane at the tip. The wing is of such a form that it generates a "venturi effect" in the flowing medium by which a part of the fluid which should normally pass outside the propeller disc area, is drawn into the propeller. The improvement consists of mixing of fluid which normally should pass outside the venturi with fluid which has flowed through the blades by provisions on blades and/or wing or vanes.

REFERENCES:
patent: 104918 (1870-06-01), St. Clair
patent: 988735 (1911-04-01), Perry
patent: 1147658 (1915-07-01), Stukes
patent: 1467227 (1923-09-01), Capell
patent: 2361676 (1944-10-01), Baker
patent: 3038543 (1962-06-01), Davidson
patent: 4093402 (1978-06-01), van Holten
patent: 4147472 (1979-04-01), Kling
patent: 4159191 (1979-06-01), Graybill

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