IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0822785
(2015-08-10)
|
등록번호 |
US-9371818
(2016-06-21)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
12 |
초록
▼
A wind turbine is provided that has a blade encased into a substantially circular portion of a shell, the shell having an interior surface, an exterior surface, a first end, an opposite second end, and an intake opening between the first and the second end, wherein the first end is closed and wherei
A wind turbine is provided that has a blade encased into a substantially circular portion of a shell, the shell having an interior surface, an exterior surface, a first end, an opposite second end, and an intake opening between the first and the second end, wherein the first end is closed and wherein the shell has an exhaust opening at or near the second end, wherein wind ingested into the shell through the intake opening is forced to become a vortex having a higher speed than the ingested wind and concentrating the ingested wind substantially near the interior surface of the shell into a spiral air stream traveling toward the exhaust opening, in order to increase an amount of energy harvested by the blade from the ingested wind before the ingested wind, devoid of the amount of energy harvested, exits the shell through the exhaust opening.
대표청구항
▼
1. A wind turbine comprising a blade rotor having one or more blades and being encased into a substantially circular portion of a shell, the shell having an interior curved surface, an exterior surface, a first end, an opposite second end, and an inward narrowing intake opening between the first and
1. A wind turbine comprising a blade rotor having one or more blades and being encased into a substantially circular portion of a shell, the shell having an interior curved surface, an exterior surface, a first end, an opposite second end, and an inward narrowing intake opening between the first and the second end, wherein the shell has an airfoil on a side of the intake opening that increases an amount of the ingested wind by capturing a portion of a wind outside the shell that would otherwise escape the intake opening of the shell, wherein the first end is closed and wherein the shell has an exhaust opening at or near the second end, wherein wind ingested into the shell through the inward narrowing intake opening is forced to become a vortex having a higher speed than the ingested wind and concentrating the ingested wind substantially near the interior curved surface of the shell into a spiral air stream traveling toward the exhaust opening, in order to increase an amount of energy harvested by the one or more blades from the ingested wind before the ingested wind, devoid of the amount of energy harvested, exits the shell through the exhaust opening. 2. The wind turbine of claim 1, wherein the vortex is obtained by combining Venturi, Bernoulli and Coanda Effects. 3. The wind turbine of claim 2, wherein the increase of the amount of energy harvested by the one or more blades is achieved by the vortex approaching each of the one or more blades at an angle of attack that reduces drag. 4. The wind turbine of claim 3, wherein the higher speed of the vortex causes a pressure inside the shell to be lower than an atmospheric pressure outside the shell, thus causing a suction effect that draws more wind into the shell. 5. The wind turbine of claim 4, wherein the shell is configured to provide a distance between the intake opening and the one or more blades to facilitate the formation of a natural eddy between the vortex and a laminar flow of the ingested wind, outside the path of the one or more blades, thus preventing drag and also contributing to the suction effect. 6. The wind turbine of claim 2, wherein the increase of the amount of energy harvested by the one or more blades is achieved by the shell causing ingested wind that misses an impact with the one or more blades not to escape but remains within a radius of actionable use of the one or more blades by accompanying them in their rotation, while traveling toward the exhaust opening. 7. The wind turbine of claim 1, wherein the one or more blades are lift blades and wherein a flow pocket of reduced turbulence is created between a high pressure zone and an opposite low pressure zone that creates lift of the lift blades. 8. The wind turbine of claim 1, wherein the airfoil has a cambered portion that takes advantage of the Bernoulli Effect to contribute to the acceleration of the ingested wind. 9. The wind turbine of claim 8, wherein, when the wind turbine is installed as a vertical wind turbine, the airfoil, as well as the shell and correspondingly the rotor blade, are wider at the top to take advantage of higher wind speeds thereby. 10. The wind turbine of claim 1, wherein, on a side of the airfoil facing the intake opening, the airfoil has guiding vanes to enhance a downward flow of the ingested wind and to reduce turbulence. 11. The wind turbine of claim 1, wherein the wind turbine is adapted for high wind regimes by providing an expanded leeward portion of the shell. 12. The wind turbine of claim 1, wherein the wind turbine is adapted for high wind regimes by sealing a bottom portion of the shell intake opening. 13. The wind turbine of claim 1, further comprising a yaw system that rotates the shell into the direction of available wind energy, so that the airfoil and shell intake opening are in an optimum position for wind harvesting. 14. The wind turbine of claim 1, wherein the exterior surface of the shell is curved near the intake opening such that to guide at least a portion of an approaching wind toward the intake opening due to Coanda Effect, and also increase the speed of the guided wind portion, while traveling towards the intake opening, due to Bernoulli Effect. 15. The wind turbine of claim 1, wherein the wind turbine is adapted for mounting as a vertical wind turbine. 16. The wind turbine of claim 1, wherein the wind turbine is adapted for mounting on the comer of a building. 17. The wind turbine of claim 1, wherein a cross-sectional view of the shell resembles number six. 18. A wind turbine comprising a blade rotor having one or more blades and being encased into a substantially circular portion of a shell, the shell having an interior curved surface, an exterior surface, a first end, an opposite second end, and an inward narrowing intake opening between the first and the second end, a first exhaust opening at or near the first end and a second exhaust opening at or near the second end, wherein the shell has an airfoil on a side of the intake opening that increases an amount of the ingested wind by capturing a portion of a wind outside the shell that would otherwise escape the intake opening of the shell, wherein wind ingested into the shell through the inward narrowing intake opening is forced to become a vortex having a higher speed than the ingested wind and concentrating the ingested wind substantially near the interior curved surface of the shell into a spiral air stream traveling toward the first or the second exhaust opening, in order to increase an amount of energy harvested by the one or more blades from the ingested wind before the ingested wind, devoid of the amount of energy harvested, exits the shell through the exhaust opening. 19. The wind turbine of claim 18, wherein the vortex is obtained by combining Venturi, Bernoulli and Coanda Effects. 20. The wind turbine of claim 18, wherein the wind turbine is adapted for mounting under a bridge.
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