A wind powered turbine has a conduit. A middle conduit portion is located between inlet and outlet conduit portions, having a main inlet and outlet of the conduit, respectively. A rotor having a shaft with blades extending therefrom is located in the middle conduit portion. The blades are located c
A wind powered turbine has a conduit. A middle conduit portion is located between inlet and outlet conduit portions, having a main inlet and outlet of the conduit, respectively. A rotor having a shaft with blades extending therefrom is located in the middle conduit portion. The blades are located completely within the middle conduit portion. Preferably, a splitter is located in the inlet conduit portion to provide upper and lower sub-tunnels that both feed into the middle conduit portion. Upper and lower interior walls of the middle conduit portion have substantially circular plane shapes that are substantially centered at the rotational axis of the shaft. Upper and lower clearance gaps are located between the blades and the upper and lower interior walls, respectively. The main outlet is preferably higher than the main inlet. Preferably, a generator is located on each side of the conduit and rotatably coupled to the shaft.
대표청구항▼
What is claimed is: 1. A wind turbine apparatus comprising: a conduit extending along a longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longit
What is claimed is: 1. A wind turbine apparatus comprising: a conduit extending along a longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longitudinal axis, the outlet portion having a main outlet opening, and a middle portion located between the inlet and outlet portions, the inlet portion being fluidly connected to the outlet portion via the middle portion; a rotor located in the middle portion of the conduit, the rotor comprising a shaft extending along a rotational axis through the middle conduit portion, the rotor being adapted to rotate about the rotational axis, wherein the longitudinal axis intersects the rotational axis, wherein a rotor angle formed between the longitudinal axis and the rotational axis is between about 45 degrees and about 135 degrees, and wherein a longitudinal angle formed between the longitudinal axis and an overall wind flow direction for wind flowing through the conduit when the apparatus is being powered by a wind flow is less than about 45 degrees, and blades extending from the shaft, the blades being located completely within the middle portion of the conduit; a splitter located in the inlet portion of the conduit, so that the inlet portion of the conduit comprises an upper sub-tunnel and a lower sub-tunnel divided by the splitter, wherein the upper and lower sub-tunnels both feed into a middle portion inlet of the middle portion of the conduit, wherein the middle portion inlet is closer to the main inlet opening than a middle portion outlet of the middle portion along the longitudinal axis, and wherein the middle portion outlet is closer to the main outlet opening than the middle portion inlet along the longitudinal axis; an upper interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, wherein an upper clearance gap is located between the blades and the upper interior wall of the middle conduit portion when the blades pass thereby; and a lower interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, the lower interior wall of the middle conduit portion being opposite and facing the upper interior wall of the middle conduit portion, wherein a lower clearance gap is located between the blades and the lower interior wall of the middle conduit portion when the blades pass thereby, and wherein side clearance gaps are located between sides of the blades and the middle conduit portion. 2. The wind turbine apparatus of claim 1, wherein the splitter is generally wedge-shaped with a smaller leading end thereof located closer to the main inlet opening than a larger trailing end thereof. 3. The wind turbine apparatus of claim 2, wherein an upper inlet cross-section area for an upper inlet of the upper sub-tunnel is larger than an upper outlet cross-section area for an upper outlet of the upper sub-tunnel, the upper inlet of the upper sub-tunnel being located closer to the main inlet opening of the inlet portion than the upper outlet of the upper sub-tunnel, and wherein a lower inlet cross-section area for a lower inlet of the lower sub-tunnel is larger than a lower outlet cross-section area for a lower outlet of the lower sub-tunnel, the lower inlet of the lower sub-tunnel being located closer to the main inlet opening of the inlet portion than the lower outlet of the lower sub-tunnel, and wherein the upper and lower outlets of the upper and lower sub-tunnels both feed into the middle portion of the conduit. 4. The wind turbine apparatus of claim 3, wherein a size of the upper inlet cross-section area is between about 19% and about 35% of the lower inlet cross-section area. 5. The wind turbine apparatus of claim 1, wherein the rotor has a number of blades selected from a group consisting of two, three, four, five, six, seven, and eight. 6. The wind turbine apparatus of claim 1, wherein the upper clearance gap is less than about 10 mm. 7. The wind turbine apparatus of claim 1, wherein the lower clearance gap is less than about 10 mm. 8. The wind turbine apparatus of claim 1, further comprising an outlet centroid of a main outlet cross-section area for the main outlet opening being located higher than an inlet centroid of a main inlet cross-section area for the main inlet opening relative to the rotational axis and relative to the longitudinal axis. 9. The wind turbine apparatus of claim 8, wherein the main outlet cross-section area is about equal to the main inlet cross-section area. 10. The wind turbine apparatus of claim 1, further comprising: a first electric power generator located outside of a first side of the conduit and rotationally coupled to a first end of the shaft, wherein a first generator rotor of the first electric power generator is adapted to rotate about the rotational axis; and a second electric power generator located outside of a second side of the conduit and rotationally coupled to a second end of the shaft, wherein a second generator rotor of the second electric power generator is adapted to rotate about the rotational axis. 11. The wind turbine apparatus of claim 1, wherein an outer top surface section of the outlet conduit portion is substantially parallel with the longitudinal axis, the outer top surface section having a substantially flat planar shape, and the outer top surface section being proximate to the main outlet opening. 12. The wind turbine apparatus of claim 1, wherein an outer bottom surface section of the outlet conduit portion is substantially parallel with the longitudinal axis, the outer bottom surface section having a substantially flat planar shape, and the outer bottom surface section being proximate to the main outlet opening. 13. The wind turbine apparatus of claim 1, wherein outer side surfaces of the conduit have a substantially flat planar shape and are substantially parallel with the longitudinal axis. 14. The wind turbine apparatus of claim 1, wherein an outer top surface section of the inlet conduit portion is substantially parallel with the longitudinal axis, the outer top surface section having a substantially flat planar shape, and the outer top surface section being proximate to the main inlet opening. 15. The wind turbine apparatus of claim 1, wherein an inner bottom surface inlet angle is formed between an inner bottom surface section of the inlet conduit portion and the longitudinal axis, the inner bottom surface inlet angle being an acute angle, the inner bottom surface section having a substantially flat planar shape, and the inner bottom surface section being proximate to the main inlet opening. 16. The wind turbine apparatus of claim 1, wherein an inner top surface outlet angle is formed between an inner top surface section of the outlet conduit portion and the longitudinal axis, the inner top surface outlet angle being an acute angle, the inner top surface section having a substantially flat planar shape, and the inner top surface section being proximate to the middle conduit portion. 17. The wind turbine apparatus of claim 16, wherein the inner top surface outlet angle is between about 26 degrees and about 39 degrees. 18. The wind turbine apparatus of claim 1, wherein a middle portion outlet cross-section area for a middle portion outlet of the middle conduit portion is smaller than the main outlet cross-section area for the main outlet opening. 19. The wind turbine apparatus of claim 18, wherein an inner bottom surface outlet angle is formed between an inner bottom surface section of the outlet conduit portion and the longitudinal axis, the inner bottom surface outlet angle being an acute angle. 20. The wind turbine apparatus of claim 19, wherein a curved transition section is located at the middle portion outlet and connects between the inner bottom surface section of the outlet conduit portion and the lower interior wall of the middle conduit portion. 21. The wind turbine apparatus of claim 1, further comprising: a first support stand portion attached to the conduit; and a second support stand portion pivotably coupled to the first support stand portion, the first support stand portion being adapted to pivot about a vertical axis relative to the second support stand portion. 22. The wind turbine apparatus of claim 1, wherein the inlet conduit portion has a first length along the longitudinal axis, the outlet conduit portion has a second length along the longitudinal axis, and the middle conduit portion has a third length along the longitudinal axis, wherein the first length is about equal to the second length, and wherein the third length is about two times that of the first length. 23. The wind turbine apparatus of claim 1, wherein an inner top surface section of the outlet conduit portion is substantially parallel with the longitudinal axis, the inner top surface section having a substantially flat planar shape, and the inner top surface section being proximate to the main outlet opening; and wherein an inner bottom surface section of the outlet conduit portion is substantially parallel with the longitudinal axis and the inner top surface section, the inner bottom surface section having a substantially flat planar shape, and the inner bottom surface section being proximate to the main outlet opening. 24. The wind turbine apparatus of claim 1, wherein the longitudinal angle is about zero degrees and the rotor angle is about 90 degrees. 25. The wind turbine apparatus of claim 1, wherein the side clearance gaps, the upper clearance gap, and the lower clearance gap are about the same size. 26. The wind turbine apparatus of claim 1, wherein the side clearance gaps are each less than about 10 mm. 27. A wind turbine apparatus comprising: a conduit extending along a generally horizontal longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longitudinal axis, the outlet portion having a main outlet opening, and a middle portion located between the inlet and outlet portions, the inlet portion being fluidly connected to the outlet portion via the middle portion; a rotor located in the middle portion of the conduit, the rotor comprising a shaft extending along a rotational axis through the middle conduit portion, the rotor being adapted to rotate about the rotational axis, wherein the longitudinal axis intersects the rotational axis, wherein a rotor angle formed between the longitudinal axis and the rotational axis is between about 45 degrees and about 135 degrees, and wherein a longitudinal angle formed between the longitudinal axis and an overall wind flow direction for wind flowing through the conduit when the apparatus is being powered by a wind flow is less than about 45 degrees, and blades extending from the shaft, the blades being located completely within the middle portion of the conduit; a splitter located in the inlet portion of the conduit, so that the inlet portion of the conduit comprises an upper sub-tunnel and a lower sub-tunnel divided by the splitter, the splitter being generally wedge-shaped with a smaller leading end thereof located closer to the main inlet opening than a larger trailing end thereof, wherein an upper inlet cross-section area for an upper inlet of the upper sub-tunnel is larger than an upper outlet cross-section area for an upper outlet of the upper sub-tunnel, the upper inlet of the upper sub-tunnel being located closer to the main inlet opening of the inlet portion than the upper outlet of the upper sub-tunnel, wherein a lower inlet cross-section area for a lower inlet of the lower sub-tunnel is larger than a lower outlet cross-section area for a lower outlet of the lower sub-tunnel, the lower inlet of the lower sub-tunnel being located closer to the main inlet opening of the inlet portion than the lower outlet of the lower sub-tunnel, and wherein the upper and lower outlets of the upper and lower sub-tunnels both feed into a middle portion inlet of the middle portion of the conduit, wherein the middle portion inlet is closer to the main inlet opening than a middle portion outlet of the middle portion along the longitudinal axis, and wherein the middle portion outlet is closer to the main outlet opening than the middle portion inlet along the longitudinal axis; an upper interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, wherein an upper clearance gap is located between the blades and the upper interior wall of the middle conduit portion when the blades pass thereby; a lower interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, the lower interior wall of the middle conduit portion being opposite and facing the upper interior wall of the middle conduit portion, wherein a lower clearance gap is located between the blades and the lower interior wall of the middle conduit portion when the blades pass thereby, and wherein side clearance gaps are located between sides of the blades and the middle conduit portion; and an outlet centroid of a main outlet cross-section area for the main outlet opening being located higher than an inlet centroid of a main inlet cross-section area for the main inlet opening relative to the rotational axis and relative to the longitudinal axis. 28. A wind turbine apparatus comprising: a conduit extending along a generally horizontal longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longitudinal axis, the outlet portion having a main outlet opening, and a middle portion located between the inlet and outlet portions, the inlet portion being fluidly connected to the outlet portion via the middle portion; a rotor located in the middle portion of the conduit, the rotor comprising a shaft extending along a rotational axis through the middle conduit portion, the rotor being adapted to rotate about the rotational axis, wherein the longitudinal axis intersects the rotational axis, wherein a rotor angle formed between the longitudinal axis and the rotational axis is between about 45 degrees and about 135 degrees, and wherein a longitudinal angle formed between the longitudinal axis and an overall wind flow direction for wind flowing through the conduit when the apparatus is being powered by a wind flow is less than about 45 degrees, and blades extending from the shaft, the blades being located completely within the middle portion of the conduit; a splitter located in the inlet portion of the conduit, so that the inlet portion of the conduit comprises an upper sub-tunnel and a lower sub-tunnel divided by the splitter, the splitter being generally wedge-shaped with a smaller leading end thereof located closer to the main inlet opening than a larger trailing end thereof, wherein an upper inlet cross-section area for an upper inlet of the upper sub-tunnel is larger than an upper outlet cross-section area for an upper outlet of the upper sub-tunnel, the upper inlet of the upper sub-tunnel being located closer to the main inlet opening of the inlet portion than the upper outlet of the upper sub-tunnel, wherein a lower inlet cross-section area for a lower inlet of the lower sub-tunnel is larger than a lower outlet cross-section area for a lower outlet of the lower sub-tunnel, the lower inlet of the lower sub-tunnel being located closer to the main inlet opening of the inlet portion than the lower outlet of the lower sub-tunnel, and wherein the upper and lower outlets of the upper and lower sub-tunnels both feed into a middle portion inlet of the middle portion of the conduit, wherein the middle portion inlet is closer to the main inlet opening than a middle portion outlet of the middle portion along the longitudinal axis, and wherein the middle portion outlet is closer to the main outlet opening than the middle portion inlet along the longitudinal axis; an upper interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, wherein an upper clearance gap is located between the blades and the upper interior wall of the middle conduit portion when the blades pass thereby; a lower interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, the lower interior wall of the middle conduit portion being opposite and facing the upper interior wall of the middle conduit portion, wherein a lower clearance gap is located between the blades and the lower interior wall of the middle conduit portion when the blades pass thereby, and wherein side clearance gaps are located between sides of the blades and the middle conduit portion; an outlet centroid of a main outlet cross-section area for the main outlet opening being located higher than an inlet centroid of a main inlet cross-section area for the main inlet opening relative to the rotational axis and relative to the longitudinal axis; a first electric power generator located outside of a first side of the conduit and rotationally coupled to a first end of the shaft, wherein a first generator rotor of the first electric power generator is adapted to rotate about the rotational axis; and a second electric power generator located outside of a second side of the conduit and rotationally coupled to a second end of the shaft, wherein a second generator rotor of the second electric power generator is adapted to rotate about the rotational axis. 29. A wind turbine apparatus comprising: a conduit extending along a longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longitudinal axis, the outlet portion having a main outlet opening, and a middle portion located between the inlet and outlet portions, the inlet portion being fluidly connected to the outlet portion via the middle portion; a rotor located in the middle portion of the conduit, the rotor comprising a shaft extending along a rotational axis through the middle conduit portion, the rotor being adapted to rotate about the rotational axis, wherein the longitudinal axis intersects the rotational axis, wherein a rotor angle formed between the longitudinal axis and the rotational axis is between about 45 degrees and about 135 degrees, and wherein a longitudinal angle formed between the longitudinal axis and an overall wind flow direction for wind flowing through the conduit when the apparatus is being powered by a wind flow is less than about 45 degrees, and blades extending from the shaft, the blades being located completely within the middle portion of the conduit; an upper interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, wherein an upper clearance gap is located between the blades and the upper interior wall of the middle conduit portion when the blades pass thereby; a lower interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, the lower interior wall of the middle conduit portion being opposite and facing the upper interior wall of the middle conduit portion, wherein a lower clearance gap is located between the blades and the lower interior wall of the middle conduit portion when the blades pass thereby; a first electric power generator located outside of a first side of the conduit and rotationally coupled to a first end of the shaft, wherein a first generator rotor of the first electric power generator is adapted to rotate about the rotational axis; and a second electric power generator located outside of a second side of the conduit and rotationally coupled to a second end of the shaft, wherein a second generator rotor of the second electric power generator is adapted to rotate about the rotational axis. 30. A wind turbine apparatus comprising: a conduit extending along a longitudinal axis of the apparatus, the conduit comprising an inlet portion at a first end of the longitudinal axis, the inlet portion having a main inlet opening, an outlet portion at a second end of the longitudinal axis, the outlet portion having a main outlet opening, and a middle portion located between the inlet and outlet portions, the inlet portion being fluidly connected to the outlet portion via the middle portion; a rotor located in the middle portion of the conduit, the rotor comprising a shaft extending along a rotational axis through the middle conduit portion, the rotor being adapted to rotate about the rotational axis, wherein the longitudinal axis intersects the rotational axis, wherein a rotor angle formed between the longitudinal axis and the rotational axis is between about 45 degrees and about 135 degrees, and wherein a longitudinal angle formed between the longitudinal axis and an overall wind flow direction for wind flowing through the conduit when the apparatus is being powered by a wind flow is less than about 45 degrees, and blades extending from the shaft, the blades being located completely within the middle portion of the conduit; an upper interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, wherein an upper clearance gap is located between the blades and the upper interior wall of the middle conduit portion when the blades pass thereby, wherein the upper clearance gap is less than about 10 mm; and a lower interior wall of the middle conduit portion having a substantially circular plane shape that is substantially centered at the rotational axis, the lower interior wall of the middle conduit portion being opposite and facing the upper interior wall of the middle conduit portion, wherein a lower clearance gap is located between the blades and the lower interior wall of the middle conduit portion when the blades pass thereby, wherein the lower clearance gap is less than about 10 mm, and wherein side clearance gaps of less than about 10 mm are located between sides of the blades and the middle conduit portion. 31. The wind turbine apparatus of claim 30, wherein the rotor has a diameter of less than about 2 meters, wherein the upper clearance gap is less than about 3 mm, wherein the lower clearance gap is less than about 3 mm, and wherein each of the side clearance gaps is less than about 3 mm. 32. The wind turbine apparatus of claim 30, wherein the rotor has a diameter of less than about 3 meters, wherein the upper clearance gap is less than about 5 mm, wherein the lower clearance gap is less than about 5 mm, and wherein each of the side clearance gaps is less than about 5 mm.
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