FLUID ENERGY CONVERTER
First Claim
1. A rotor for a fluid energy converter, the rotor comprising:
- a longitudinal axis;
a front rotatable hub coaxial with the longitudinal axis;
a back rotatable hub coaxial with the longitudinal axis;
a plurality of blades, each blade comprising a back end, a front end, a front section, a tip, and a back section;
wherein the blades are arrayed angularly about the longitudinal axis; and
wherein each blade is attached at the front end to the front hub and attached at the back end to the back hub.
2 Assignments
0 Petitions
Accused Products
Abstract
A fluid energy converter, such as windmill or a wind turbine, includes a rotor having a front rotatable hub and a back rotatable hub. In some embodiments, a plurality of blades extend from the front hub to the back hub. A suitable blade includes a front section, a tip, and a back section. In one embodiment, the chord of the tip cross section is at an angle relative to the tangent of the rotor radius. The tip chord can be perpendicular to the direction of movement of the fluid. In some cases, the profile of a blade front section, from its root to the tip, forms a concave curve. In one case, the profile of the blade tip, from a junction root to the tip, forms a convex curve. A front section, an apex, and a back section of a blade form a generally parabolic shape.
29 Citations
74 Claims
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1. A rotor for a fluid energy converter, the rotor comprising:
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a longitudinal axis;
a front rotatable hub coaxial with the longitudinal axis;
a back rotatable hub coaxial with the longitudinal axis;
a plurality of blades, each blade comprising a back end, a front end, a front section, a tip, and a back section;
wherein the blades are arrayed angularly about the longitudinal axis; and
wherein each blade is attached at the front end to the front hub and attached at the back end to the back hub. - View Dependent Claims (2, 4, 5, 9, 10, 11, 17)
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3. (canceled)
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6. (canceled)
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7. (canceled)
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8. (canceled)
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12-16. -16. (canceled)
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24. A rotor for a fluid energy converter, the rotor comprising;
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a longitudinal axis;
a front rotatable hub coaxial with the longitudinal axis;
a back rotatable hub coaxial with the longitudinal axis;
a plurality of blades, each blade attached at a front end to the front hub and attached at a back end to the back hub, the blades positioned radially around the longitudinal axis, and wherein each blade has a front section, a tip, and a back section; and
wherein the chord of the tip cross section is at an angle relative to the tangent of the rotor radius. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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28-23. -23. (canceled)
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31-65. -65. (canceled)
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66. A fluid energy converter rotor, comprising:
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a longitudinal axis;
a rotatable front hub coaxial with the longitudinal axis;
a rotatable back hub coaxial with the longitudinal axis;
a shaft coaxial with the longitudinal axis;
at least three blades coaxial about the longitudinal axis, the plurality of blades comprising;
a front section, the front section attached at its root to the front hub;
a back section, the back section attached at its root to the back hub;
a tip, the tips of the blades forming the largest diameter of the rotor; and
wherein the profile of the tip from its junction root to the tip forms a convex curve. - View Dependent Claims (69, 71, 72, 73)
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67. (canceled)
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68. (canceled)
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70. (canceled)
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74-85. -85. (canceled)
Specification