IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0798717
(2010-04-09)
|
등록번호 |
US-8297910
(2012-10-30)
|
발명자
/ 주소 |
- DeRuyter, William
- Allawos, Michael
- Coye, Peter L.
|
출원인 / 주소 |
- California Energy & Power
|
대리인 / 주소 |
Knobbe, Martens, Olson & Bear, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
39 |
초록
▼
Various fluid turbine systems and methods are described. The turbine can be a vertical axis wind turbine configured to generate power from wind energy. The turbine system can have a blade assembly. The blade assembly can have a plurality of blades rotatable about an axis. The turbine system can have
Various fluid turbine systems and methods are described. The turbine can be a vertical axis wind turbine configured to generate power from wind energy. The turbine system can have a blade assembly. The blade assembly can have a plurality of blades rotatable about an axis. The turbine system can have a concentrator positionable upwind and in front of a return side of the blade assembly. The concentrator can define a convex surface facing the wind. The turbine system can also have a variable concentrator positionable upwind of a push side of the blade assembly. The variable concentrator can be adjustable between a first position and a second position, the variable concentrator being capable of deflecting more wind toward the turbine in the first position than in the second position.
대표청구항
▼
1. A fluid turbine system, comprising: a turbine comprising blades rotatable about an axis, the blades defining a window along a substantial portion of a height of the blades, wherein each of the blades defines a substantially planar push surface portion that extends outwardly from the window to a c
1. A fluid turbine system, comprising: a turbine comprising blades rotatable about an axis, the blades defining a window along a substantial portion of a height of the blades, wherein each of the blades defines a substantially planar push surface portion that extends outwardly from the window to a curved tip portion, wherein a first plane parallel with and intersecting the axis divides the space surrounding the turbine into a return side and a push side opposite the return side, the turbine configured to rotate generally in an upstream direction on the return side and generally in a downstream direction on the push side relative to a fluid flowing nominally parallel to the plane; anda concentrator positionable upstream of at least a portion of the turbine and at least partially or completely on the return side, the concentrator comprising a first curved surface portion configured to extend from a first position upstream of the turbine to a second position further upstream of the turbine and further into the return side, wherein the first curved surface portion is configured to be convex facing an upstream direction of the fluid flow, the first curved surface portion positionable to deflect at least some fluid toward the push side, the concentrator further positionable to create a relative vacuum to draw at least some fluid away from the window of the blades;wherein the substantially planar push surface portion of each of the blades is offset in a radial direction from the axis of rotation;wherein the curved tip portions are configured such that, when the substantially planar push surface portion of any one of the blades is parallel to the plane, the curved tip portion extends from one side of the plane to the other side of the plane;wherein each of the blades further defines a curved rear surface portion that is curved relative to the substantially planar push surface portion. 2. The fluid turbine system of claim 1, wherein the concentrator comprises a second surface portion positionable further into the return side relative to the first curved surface portion, the second surface portion configured to extend from a third position to a fourth position that is further into the return side and further downstream than the third position. 3. The fluid turbine system of claim 2, wherein the concentrator comprises a back surface portion configured to be concave facing downstream, the back surface portion comprising an upstream flow surface portion, an intermediate surface portion, and a downstream flow surface portion, the upstream flow surface portion shaped and positionable to direct at least some fluid flowing upstream from the turbine toward the intermediate surface portion, the intermediate surface portion shaped and positionable to redirect the at least some fluid flowing upstream to flow generally downstream toward the downstream flow surface portion, and the downstream flow surface portion shaped and positionable to receive the at least some fluid from the intermediate surface portion and direct the at least some fluid generally downstream into the fluid flowing nominally parallel to the plane. 4. The fluid turbine system of claim 2, wherein the concentrator is configured to extend in a direction further into the return side at least to an outer edge of the turbine such that the concentrator at least intersects a second plane, the second plane being tangent to an outermost edge of the turbine and parallel to the first plane. 5. The fluid turbine system of claim 4, wherein the second plane is separated from the first plane by a blade tip radius, and wherein the concentrator is configured to extend past the second plane at least twenty-five percent of the blade tip radius. 6. A fluid turbine system, comprising: a turbine rotatable about an axis, wherein a plane parallel with and intersecting the axis divides the space surrounding the turbine into a return side and a push side opposite the return side, the turbine configured to rotate generally in an upstream direction on the return side and generally in a downstream direction on the push side relative to a fluid flowing nominally parallel to the plane, wherein the turbine comprises a plurality of blades, each of the blades having a substantially straight section extending from the axis of rotation outwardly to a curved tip portion, which curves in a direction opposite the direction of rotation of the turbine, the turbine having a return outer edge furthest away from the push side; anda concentrator positionable upstream of at least a portion of the turbine and at least partially or completely on the return side, the concentrator comprising a generally u-shaped section, the generally u-shaped section comprising an upstream surface portion positionable to be convex facing upstream and a downstream surface portion positionable to be concave facing downstream, the upstream surface portion positionable to direct a push portion of fluid toward the push side, the upstream surface portion further positionable to direct a return portion of fluid downstream away from the turbine, the downstream surface portion forming a partially enclosed area shaped and positionable to receive a drag portion of fluid from the turbine and redirect the drag portion of fluid downstream into the return portion of fluid, the concentrator having a return end configured to be furthest away from the push side, the return end positionable such that the closest distance between the return end of the concentrator and the plane is at least 1.2 times greater than the closest distance between the return outer edge of the turbine and the plane;wherein a lush surface of the substantially straight section of each of the blades is offset in a radial direction from the axis of rotation;wherein the curved tip portions are configured such that, when the substantially straight section of an one of the blades is parallel to the plane, the curved tip portion extends from one side of the plane to the other side of the plane;wherein each of the blades further defines a curved rear surface portion that is curved relative to the push surface of the substantially straight section. 7. The fluid turbine system of claim 6, wherein the entire concentrator is positionable upstream of the entire turbine. 8. The fluid turbine system of claim 7, wherein the concentrator is shaped substantially as a section of a hollow airfoil.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.