Rotary kinetic fluid motors or pumps – Float supported or buoyant runner
Patent
1994-04-22
1995-09-19
Look, Edward K.
Rotary kinetic fluid motors or pumps
Float supported or buoyant runner
415 531, 415 75, 416 85, 416177, 416178, 416187, F03B 1324, F03B 312, F03B 1104
Patent
active
054511372
ABSTRACT:
A reaction turbine capable of providing high speed unidirectional rotation under a reversible ultra low head pressure and/or high velocity fluid flow is disclosed. The turbine comprises a working wheel with a plurality of airfoil-shaped blades mounted transversely to the direction of fluid flow for rotation in a plane parallel to the fluid flow. The blades are arranged in a helical configuration, a modification of a delta turbine, which ensures that a portion of the blades are always positioned perpendicular to the fluid pressure, thereby creating maximum thrust to spin the turbine and ensuring a continuous speed of rotation with no accelerations and decelerations. The skewed leading edges further reduce resistance to the turbine rotation. A channel having a rectangular cross-section may be provided to direct the fluid flow to the blades. The channel may have a curved configuration having opposed changes in elevation or bulges directed towards the center of the turbine in a plane parallel to the flow of fluid to optimize the angle of attack of the fluid on the blades. At ultra low head fluid pressures, the turbine is capable of achieving high speeds, which, for gas turbines, are the speeds at which electric generators conventionally operate. For hydro applications, the helical turbine requires minimal gearing multiplication. The turbine is suitable for use in hydro-pneumatic, hydro, wind, or wave power systems.
REFERENCES:
patent: 135459 (1873-02-01), Yarrell
patent: 707857 (1902-08-01), Marburg
patent: 1396609 (1921-11-01), Weisenborn
patent: 1835018 (1931-12-01), Darrieus
patent: 2098876 (1937-11-01), Nash
patent: 3986787 (1976-10-01), Mouton, Jr. et al.
patent: 4124329 (1978-11-01), Romanov et al.
patent: 4162410 (1979-07-01), Amick
patent: 4222700 (1980-09-01), Leuthard
patent: 4234289 (1980-11-01), Lebost
patent: 4245475 (1981-01-01), Girden
patent: 4275989 (1981-06-01), Gutierrez Atencio
patent: 4293273 (1981-10-01), Romanov et al.
patent: 4295783 (1981-10-01), Lebost
patent: 4368392 (1983-01-01), Drees
patent: 4430044 (1984-02-01), Liljegren
patent: 4435124 (1984-03-01), Zheng
patent: 4446378 (1984-05-01), Martinez Parra
patent: 4555218 (1985-11-01), Jonsson et al.
patent: 4609827 (1986-09-01), Nepple
patent: 5074710 (1991-12-01), Gorlov
patent: 5222833 (1993-06-01), Gorlov
P R S White, A Phenimenological Design Tool for Wells Turbines, Department of Mechanical and Manufacturing Systems, Coventry Polytechnic, UK, pp. 53-58, undated.
M. E. McCormick, B. Cochran, A Performance Study Of A Bi-Directional Radial Turbine, U.S. Navy Academy and Johns Hopkins University, U.S.A., 6 pages, undated.
Larson James A.
Look Edward K.
Northeastern University
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