Axial flow wind turbine
OwnerRussel Hugh Marvin, Drew M. Rocky +1inventors
InventorsRussel Hugh Marvin, Drew M. Rocky, Bret T. Sleicher
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Abstract
An axial flow wind turbine having forwardly swept blades with an annular ring interconnecting the blade tips. A rearwardly directed rake profile is also provided together with unequal blade spacing.
Claims27
An axial flow turbine for use in wind turbine electrical generating systems comprising a hub mounted for rotation about an axis and carrying a plurality of narrow radially elongated wind responsive blades in circumaxially spaced driving relationship there about, each blade having a root portion connected with and supported by the hub and a remote tip portion spaced radially outwardly from the root portion, the cross sectional configuration of the blades between their root and tip portions being such that wind impinging thereon results in a substantial aggregate torque rotating the blades and hub in one direction, each blade having a sweep profile with a tip portion displaced forwardly in a radial plane in relation to its root portion, and means adding mass at the tips of the blades whereby to increase the centrifugal force generated during rotation and urge the blades radially in a direction opposite the direction of rotation and toward a linear centerline condition.
An axial flow turbine for use in wind turbine electrical generating systems comprising a hub mounted for rotation about an axis and carrying a plurality of narrow radially elongated wind responsive blades in circumaxially spaced driving relationship there about, each blade having a root portion connected with and supported by the hub and a remote tip portion spaced radially outwardly from the root portion, the cross sectional configuration of the blades between their root and tip portions being such that wind impinging thereon results in a substantial aggregate torque rotating the blades and hub in one direction, and each blade having a rake profile with a tip portion displaced rearwardly in relation to its root portion in an axial plane and in a downwind direction, and means adding mass at the tips of the blades whereby to increase the centrifugal force generated during rotation and urge the blades axially in a direction opposite the direction of wind flow.
An axial flow turbine for use in wind turbine electrical generating systems comprising a hub mounted for rotation about an axis and carrying a plurality of narrow radially elongated wind responsive blades with their tips at least partially unequally circumaxially spaced in driving relationship there about, each blade having a root portion connected with and supported by the hub and a remote tip portion spaced radially outwardly from the root portion, the cross sectional configuration of the blades between their root and tip portions being such that wind impinging thereon results in a substantial aggregate torque rotating the blades and hub in one direction.
Dependencies are inferred from the claim text.