Blade, wind turbine and wind power generating system
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0182490
(2014-02-18)
|
등록번호 |
US-9797373
(2017-10-24)
|
발명자
/ 주소 |
- Aihara, Kunihiko
- Aihara, Junko
|
출원인 / 주소 |
- TECHNOLOGY OF NATURAL PROVIDENCE, INC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
▼
A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling d
A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling direction, and a back edge portion connected to the back end of the first blade surface and the back end of the second blade surface extending toward the opposite of the travelling direction, and formed in an acute angle, and the blade is formed to be curved in an arc viewed from the side of the travelling direction.
대표청구항
▼
1. A blade that rotates around a rotating shaft, to advance toward a travelling direction using a lift force generated by wind when being connected to the rotating shaft, the blade comprising: a first blade surface which is arranged facing an outside in the direction of radius of rotation when being
1. A blade that rotates around a rotating shaft, to advance toward a travelling direction using a lift force generated by wind when being connected to the rotating shaft, the blade comprising: a first blade surface which is arranged facing an outside in the direction of radius of rotation when being connected to the rotating shaft;a second blade surface which forms a reverse surface of the first blade surface and which is arranged facing the rotating shaft when being connected to the rotating shaft;a front edge portion connected to a front end of the first blade surface and a front end of the second blade surface and formed in a curved shape convex toward the travelling direction; anda back edge portion connected to a back end of the first blade surface and a back end of the second blade surface, extending toward the opposite of the travelling direction, and formed in an acute angle,wherein, when being connected to the rotating shaft, both ends of the blade are connected to the rotating shaft, and the blade is curved to form in an arc which substantially forms a semicircle viewed from a side of the travelling direction,the first blade surface has a wind receptor which is concave toward the second blade surface and is arranged on the first blade surface, andthe wind receptor comprises: an outer surface having two ends and being substantially parallel to the second blade surface,two side wall surfaces being positioned along the travelling direction and substantially perpendicular to the second blade surface, with one side wall surface connecting one end of the outer surface, and the other side wall surface connecting the other end of the outer surface along the traveling direction of the outer surface, anda front wall surface being positioned on the side of a front end portion of the outer surface and the two side wall surfaces, and formed in the shape of a curved surface which is convex toward the travelling direction. 2. The blade according to claim 1, wherein, viewing from the travelling direction, the blade is formed in the shape of a semicircle so that the length along the travelling direction from each of both ends toward the center becomes gradually longer. 3. The blade according to claim 1, wherein a step is formed on the first blade surface so that the distance between the surface of the step on the front edge portion side and the second blade surface is greater than the distance between the surface of the step on the back edge portion side and the second blade surface; wherein a surface of the step that connects the surface of the step on the front edge portion side and the surface of the step on the back edge portion side is facing the back edge portion side. 4. The blade according to claim 3, wherein the surface of the step is formed to have a concave surface being concave toward the front edge portion. 5. The blade according to claim 3, wherein a back edge plate extending in the opposite direction of the travelling direction is arranged on the first blade surface side of the back edge portion. 6. A wind turbine in which the blade according to claim 1 is arranged such that the blade is rotatable around the rotating shaft and the first blade surface is arranged facing the outside toward the direction of radius of rotation. 7. A wind power generating system comprising the wind turbine according to claim 6 and a generator that generates electricity by rotating the wind turbine.
이 특허에 인용된 특허 (2)
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Mitchell, John Sinclair; Scott, George Arthur; Detenbeck, Michael James, Vertical axis wind turbine system.
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Lange ; Heinz, Windmill rotor.
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