A vertical axis wind turbine including a turbine rotor having an axis of rotation and at least one blade spaced from and mounted for rotation about the rotation axis of the turbine. The blade has at least one longitudinal surface substantially parallel to the rotation axis and for engagement, in use
A vertical axis wind turbine including a turbine rotor having an axis of rotation and at least one blade spaced from and mounted for rotation about the rotation axis of the turbine. The blade has at least one longitudinal surface substantially parallel to the rotation axis and for engagement, in use, with wind incident on the turbine rotor. The blade is a two part blade with a first leading blade portion pivotably connected to a second trailing blade portion. The turbine includes pitch control means and camber control means for controlling the pitch and camber of the blade.
대표청구항▼
1. A turbine comprising a turbine rotor having an axis of rotation and at least one blade spaced from and mounted for rotation about the rotation axis of the turbine, the blade having at least one longitudinal surface substantially parallel to the rotation axis and for engagement, in use, with fluid
1. A turbine comprising a turbine rotor having an axis of rotation and at least one blade spaced from and mounted for rotation about the rotation axis of the turbine, the blade having at least one longitudinal surface substantially parallel to the rotation axis and for engagement, in use, with fluid incident on the turbine rotor, and the blade being a two part blade with a first leading blade portion pivotably connected to a second trailing blade portion, the turbine further comprising active pitch control means and active camber control means for controlling the pitch and camber of the blade, the active pitch control means comprising a pitch pivot on the first leading blade portion, the pitch pivot being guidable along a pitch path defined by a pitch control component, and the active camber control means comprising a camber pivot on the second trailing blade portion, the camber pivot being guidable around a defined camber path defined by a camber control component, the pitch control component being either a pitch control rail or a pitch bearing, and the camber control component being either a camber control rail or a camber bearing. 2. The turbine according to claim 1 wherein the pitch and camber paths are each substantially circular. 3. The turbine according to claim 2 wherein one or more of the pitch path and camber path define a substantially circular path, and the centres of the circular paths are offset from each other and from the axis of rotation of the turbine. 4. The turbine according to claim 1 wherein the pitch path is defined by the distal end of a pitch rod linked to the pitch bearing which rotates about a pitch axis offset from the turbine's axis of rotation, and the camber path is defined by the distal end of a camber rod linked to the camber bearing which rotates about camber axis offset from the turbine's axis of rotation, the distal ends of the pitch rod and camber rod being pivotably coupled to, respectively, the pitch pivot and the camber pivot. 5. The turbine according to claim 4 wherein the pitch and camber pivots of the turbine blade are coupled separately to the pitch rod and the camber rod respectively, and each of the pitch rod and the camber rod is coupled to a separate pitch bearing or a camber bearing, respectively. 6. The turbine according to claim 4 comprising at least two turbine blades, each turbine blade having a respective pitch rod and a respective camber rod and wherein the pitch and camber pivots of each turbine blade are each coupled to the respective pitch rods and the respective camber rod, each pitch rod being coupled to a pitch bearing an each camber rod being coupled to a camber bearing. 7. The turbine according to claim 1 wherein the pitch path is defined by a first pitch guide rail, and the camber path is defined by a second camber guide rail. 8. The turbine according to claim 7 comprising at least two blades and wherein the pitch and camber pivots of said at least two blades are each coupled to, respectively, a single pitch and a single camber guide rail. 9. The turbine according to claim 1 wherein one of the pitch or camber path is defined by the distal end of a pitch rod or a camber rod respectively, linked to a bearing which rotates about a pitch axis or a camber axis respectively, which is offset from the turbine's axis of rotation, the distal end of the pitch rod or the camber rod being pivotably coupled to either the pitch pivot or the camber pivot respectively, and wherein the other of the pitch or camber path is defined by a pitch guide rail or a camber guide rail respectively. 10. The turbine according to claim 9 wherein, in use, the position of one or more of the pitch and camber bearings, or one or more of the pitch and camber guide rail is fixed. 11. The turbine according to claim 9 wherein the position of one or more of the pitch and camber bearings, or one or more of the pitch and camber guide rail is controllably adjustable. 12. The turbine according to claim 11 wherein the position of one or more of the pitch and camber bearings, or one or more of the pitch and camber guide rail is controlled by linear actuators. 13. The turbine according to claim 11 wherein adjustment is possible in one or two axes. 14. The turbine according to claim 1 wherein each blade portion includes first and second opposing transverse surfaces substantially transverse to the blade longitudinal axis and wherein one of the leading blade portion or trailing blade portion includes first and second pivot rods projecting from, respectively, the first and second transverse surfaces of the leading blade portion or trailing blade portion, the first pivot rod being coupled to one of either the leading blade portion or trailing blade portion to form one of the pitch or camber pivots and the second pivot rod being coupled to either a follower mechanism which is arranged to follow one of a pitch guide rail or a camber guide rail, or a pitch rod or a camber rod connected to one of the pitch or camber bearings. 15. The turbine according to claim 14 wherein the first pivot rod projects from one of the leading blade portion or trailing blade portion and is coupled to the other of the leading blade portion or trailing blade portion. 16. The turbine according to claim 14 wherein the other one of the leading blade portion or trailing blade portion is pivotably coupled to either a follower mechanism which is arranged to follow one of the pitch or camber guide rails, or to the pitch rod or the camber rod connected to one of the pitch or camber bearings. 17. The turbine according to claim 14, wherein one of the leading blade portion or trailing blade portion is coupled by the first pivot rod to either one of the pitch or camber guide rails, or to one of the pitch or camber bearings, and the other one of the leading blade portion and trailing blade portion is pivotably coupled to either a follower mechanism which is arranged to follow the other one of the pitch or camber guide rails, or to the pitch rod or the camber rod connected to one of the pitch or camber bearings. 18. The turbine according to claim 17 wherein the second pivot rod is pivotably connected to the follower mechanism or the pitch rod or the camber rod which is arranged to follow the other one of the pitch or camber guide rails, and the projecting pivot rod forming one of the camber or pitch pivots. 19. The turbine according to claim 18 wherein the first and second pivot rods project from the trailing blade portion and the first pivot rod is connected to the leading blade portion to form the pitch pivot. 20. The turbine according to claim 18 wherein the second pivot rod forms the camber pivot. 21. The turbine according to claim 1, wherein the turbine is a vertical axis wind turbine. 22. The turbine according to claim 14, wherein the first transverse surface and the second transverse surface are, respectively, upper and lower surfaces of the respective blade portions. 23. The turbine according to claim 22 wherein the pitch and camber paths are arranged below the at least one blade. 24. The turbine according to claim 1, wherein the turbine is a vertical axis wave or tidal turbine. 25. The turbine according to claim 14, wherein the turbine is a vertical axis wave or tidal turbine, and wherein the first transverse surface and the second transverse surface are, respectively, lower and upper surfaces of the respective blade portions. 26. The turbine according to claim 22 wherein the pitch and camber paths are arranged above or to the side of the at least one blade. 27. A cyclogiro turbine according to claim 1.
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이 특허에 인용된 특허 (5)
Gutierrez Bill (3428 Belmont Ave. El Cerrito CA 94530), Articulated blade with automatic pitch and camber control.
Doering John N. (1048 Palatka Rd. Louisville KY 40214) Doering Lloyd D. (1048 Palatka Rd. Louisville KY 40214) Doering Michael N. (5411 Distler Rd. Louisville KY 40258), Fluid active device.
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