Sub sea central axis turbine with rearwardly raked blades
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United States of America Patent
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Jan 21, 2014
Grant Date -
Jan 19, 2012
app pub date -
Apr 14, 2009
filing date -
Apr 14, 2008
priority date (Note) -
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Abstract
A central axis water turbine is described which comprises a turbine body having a central axis; a rotor mounted on the turbine body for rotation about the central axis, the rotor comprising a central hub supporting a plurality of blades, each blade extending from a blade root mounted on the hub to a blade tip; a generator driven by the rotor; and a housing surrounding the rotor and adapted to direct water flow towards the rotor, the housing converging from a front opening forward of the rotor to a narrower throat adjacent the turbine body; wherein the blades are splayed rearward from the blade root to the blade tip by a tilt angle of 1° to 20° from a plane perpendicular to the central axis.
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