[특허]Aerodynamic-hybrid vertical-axis wind turbine

Novastron Corporation

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Aerodynamic-hybrid vertical-axis wind turbine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-009/00 H02P-009/04
미국특허분류(USC)	290/055; 290/044
출원번호	US-0145523 (2005-06-03)
등록번호	US-7329965 (2008-02-12)
발명자 / 주소	Roberts,Gary D. Roberts,David W.
출원인 / 주소	Novastron Corporation
대리인 / 주소	Thorpe North & Western, LLP
인용정보	피인용 횟수 : 41 인용 특허 : 23

초록
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An aerodynamic-hybrid, vertical-axis wind turbine which includes a rotor airfoil and stator blade combination which maximizes energy production by increasing wind velocity and pressure while eliminating back pressure and improving the laminar flow of wind both around and through the device. The rotor airfoils have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. The stator blades have a horizontal cross-section with a planar...

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What is claimed is: 1. A vertical wind turbine device, comprising: a) a rotor, rotatable about a vertical axis in an annular stator; b) a plurality of vertically elongated rotor airfoils, disposed circumferentially around the vertical axis; c) the rotor airfoils each having a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends d) a plurality of vertically elongated stator blades, disposed circumferentially around the vertical axis; e) the stator blades each having a horizontal cross-section with a planar side and a convex side; and f) the convex side of the stator blades and the convex leading side of the rotor airfoils being oriented to face circumferentially around the vertical axis in a common direction. 2. A device in accordance with claim 1, wherein the crescent shape of the rotor airfoils are symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of the horizontal cross-section. 3. A device in accordance with claim 1, wherein an open center is defined between the rotor airfoils which are spaced apart radially from the vertical axis without any structure between the rotor airfoils and the vertical axis; and wherein a diameter of the open center is approximately 38% of a diameter of the rotor. 4. A device in accordance with claim 1, wherein the convex side of the stator blades are symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of a horizontal cross-section of the stator blade. 5. A device in accordance with claim 1, wherein the rotor airfoils are larger in proportion to the stator blades. 6. A device in accordance with claim 1, wherein the stator blades are primary stator blades having common dimensions; and further comprising: a plurality of vertically elongated secondary stator blades, disposed circumferentially around the vertical axis; and the secondary stator blades having smaller dimensions than the primary stator blades. 7. A device in accordance with claim 1, wherein the stator blades include a plurality of elongated, horizontally oriented grooves formed in the convex side. 8. A device in accordance with claim 1, wherein the stator blades are hollow and include means for deicing the stator blades or means for conveying energy through the stator blades. 9. A device in accordance with claim 1, wherein the planar side of the stator blades are oriented at an angle with respect to a plane passing through the vertical axis and a tip of the stator blade between 103 to 149 degrees. 10. A device in accordance with claim 1, wherein the rotor airfoils are oriented at an angle with respect to the vertical axis between 0 to 23 degrees in either direction. 11. A device in accordance with claim 1, wherein the rotor airfoils are primary rotor airfoils having common dimensions; and further comprising: a plurality of vertically elongated secondary rotor airfoils, disposed circumferentially around the vertical axis; each secondary rotor airfoils disposed adjacent to and spaced-apart from the leading side of a corresponding primary rotor airfoils; and the secondary rotor airfoils having smaller dimensions than the primary rotor airfoils. 12. A device in accordance with claim 1, wherein the rotor airfoils include a plurality of elongated, horizontally oriented grooves formed in the convex leading side. 13. A device in accordance with claim 1, wherein the rotor is divided into at least two rotor subsections coupled to at least one energy conversion nexus disposed at an elevated location between the at least two rotor subsections. 14. A device in accordance with claim 1, wherein the rotor includes a plurality of rotor modules stacked and coupled together to form a desired height. 15. A device in accordance with claim 1, wherein the rotor airfoils include a plurality of sequential, horizontal tiers; the rotor airfoils of each tier having a different angular orientation with respect to an adjacent tier. 16. A vertical wind turbine device, comprising: a) a rotor, rotatable about a vertical axis in an annular stator; b) a plurality of vertically elongated rotor airfoils, disposed circumferentially around the vertical axis; c) an open center defined between the rotor airfoils which are spaced apart radially from the vertical axis without any structure between the rotor airfoils and the vertical axis, a diameter of the open center being approximately 38% of a diameter of the rotor; d) a plurality of vertically elongated stator blades, disposed circumferentially around the vertical axis; and e) the stator blades each having a horizontal cross-section with a planar side and a convex side; and f) the convex side of the stator blades and a convex leading side of the rotor airfoils being oriented to face circumferentially around the vertical axis in a common direction. 17. A device in accordance with claim 16, wherein the rotor airfoils each have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. 18. A device in accordance with claim 17, wherein the crescent shape of the rotor airfoils are symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of the horizontal cross-section. 19. A device in accordance with claim 16, wherein the convex side of the stator blades is symmetrical about a vertical bisection. 20. A vertical wind turbine device, comprising: a) a rotor, rotatable about a vertical axis in an annular stator; b) a plurality of vertically elongated rotor airfoils, disposed circumferentially around the vertical axis; c) a plurality of vertically elongated stator blades, disposed circumferentially around the vertical axis; and d) the stator blades each having a horizontal cross-section with a planar side and a convex side; e) the convex side of the stator blades and a convex leading side of the rotor airfoils being oriented to face circumferentially around the vertical axis in a common direction; and f) the convex side of the stator blades being symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of a horizontal cross-section of the stator blade. 21. A device in accordance with claim 20, wherein: the rotor airfoils each have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. 22. A device in accordance with claim 21, wherein the crescent shape of the rotor airfoils is symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of the horizontal cross-section. 23. A device in accordance with claim 20, wherein an open center is defined between the rotor airfoils which are spaced apart radially from the vertical axis without any structure between the rotor airfoils and the vertical axis; and wherein a diameter of the open center is approximately 38% of a diameter of the rotor. 24. A device in accordance with claim 20, wherein the stator blades are primary stator blades having common dimensions; and further comprising: a plurality of vertically elongated secondary stator blades, disposed circumferentially around the vertical axis; and the secondary stator blades having smaller dimensions than the primary stator blades. 25. A device in accordance with claim 20, wherein the stator blades include a plurality of elongated, horizontally oriented grooves formed in the convex side. 26. A device in accordance with claim 20, wherein the stator blades are hollow and include means for deicing the stator blades. 27. A device in accordance with claim 20, wherein the planar side of the stator blades are oriented at an angle with respect to a plane passing through the vertical axis and a tip of the stator blade between 103 to 149 degrees. 28. A device in accordance with claim 20, wherein the rotor airfoils are primary rotor airfoils having common dimensions; and further comprising: a plurality of vertically elongated secondary rotor airfoils, disposed circumferentially around the vertical axis; each secondary rotor airfoils disposed adjacent to and spaced-apart from the leading side of a corresponding primary rotor airfoils; and the secondary rotor airfoils having smaller dimensions than the primary rotor airfoils. 29. A device in accordance with claim 20, wherein the rotor airfoils include a plurality of elongated, horizontally oriented grooves formed in the convex leading side. 30. A device in accordance with claim 20, wherein the rotor is divided into at least two rotor subsections coupled to at least one energy conversion nexus disposed at an elevated location between the at least two rotor subsections. 31. A device in accordance with claim 20, wherein the rotor includes a plurality of rotor modules stacked and coupled together to form a desired height. 32. A device in accordance with claim 20, wherein the rotor airfoils include a plurality of sequential, horizontal tiers; the rotor airfoils of each tier having a different angular orientation with respect to an adjacent tier. 33. A vertical wind turbine device, comprising: a) a rotor, rotatable about a vertical axis in an annular stator; b) a plurality of vertically elongated rotor airfoils, disposed circumferentially around the vertical axis; c) the rotor being divided into at least two rotor subsections coupled to at least one energy conversion nexus disposed at an elevated location between the at least two rotor subsections; d) a plurality of vertically elongated stator blades, disposed circumferentially around the vertical axis; and e) the stator blades each having a horizontal cross-section with a planar side and a convex side; and f) the convex side of the stator blades and a convex leading side of the rotor airfoils being oriented to face circumferentially around the vertical axis in a common direction. 34. A device in accordance with claim 33, wherein at least two rotor subsections includes a plurality of rotor subsections stacked and coupled together to form a desired height. 35. A device in accordance with claim 33, wherein the rotor airfoils each have a horizontal cross-section with a crescent shape including a convex leading side and a concave trailing side with a thicker middle section that tapers to narrower sections at ends. 36. A device in accordance with claim 35, wherein the crescent shape of the rotor airfoils is symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of the horizontal cross-section. 37. A device in accordance with claim 33, wherein an open center is defined between the rotor airfoils which are spaced apart radially from the vertical axis without any structure between the rotor airfoils and the vertical axis; and wherein a diameter of the open center is approximately 38% of a diameter of the rotor. 38. A device in accordance with claim 33, wherein the convex side of the stator blades is symmetrical about a vertical bisection, the vertical bisection being oriented orthogonal to a longitudinal direction of a horizontal cross-section of the stator blade.

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Aerodynamic-hybrid vertical-axis wind turbine

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Aerodynamic-hybrid vertical-axis wind turbine

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