[특허]Cross-flow wind turbine

Terra Moya Aqua, Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Cross-flow wind turbine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-003/04 F03D-003/00
미국특허분류(USC)	415/001; 415/186; 415/191; 415/907; 415/197.A
출원번호	US-0685365 (2007-03-13)
등록번호	US-7347660 (2008-03-25)
발명자 / 주소	Taylor,Scott J. Taylor,Ronald Cochran,Brad C. Banks,David
출원인 / 주소	Terra Moya Aqua, Inc.
대리인 / 주소	Cochran,William W.
인용정보	피인용 횟수 : 5 인용 특허 : 83

초록
▼

Disclosed are various embodiments of cross-wind turbines that are capable of providing high efficiencies over a wide range of wind velocities. An airfoil stator causes wind to accelerate along its surface and creates a low pressure area on the leading face of the rotor blade during the power stroke. A blocking stator blocks wind from impeding the movement of the rotor blades during the return cycle and directs wind onto the trailing face of the rotor blades during the power cycle. A large pressure differential is created between the leading face of the rotor blade and the trailing face of the rotor blade during the power cycle which creates a large amount of force that rotates the rotor blade about the central shaft. In some embodiments, gaps are provided between the inside edge of the rotor blade and a stationary shaft which vents wind collected by the rotor blade during certain portions of the rotation cycle. The vented wind increases the pressure on the trailing face of the rotor blades during the return cycle to further assist in the efficiency of this system.

대표
청구항
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What is claimed is: 1. A method of capturing wind energy using a cross-flow wind turbine comprising: providing an airfoil stator that has at least one surface that has a portion that is curved; generating a low pressure area on a leading face of a rotor blade by accelerating the flow of air across said curved surface of said airfoil stator that is positioned to form a predetermined gap between said rotor blade and said air foil stator during a power stroke of said rotor blade; using a blocking stator to substantially block wind from impeding movement of said rotor blade during a return cycle of said rotor blade and directing said substantially blocked wind to a trailing face of said rotor during said power stroke of said rotor blade so as to create a pressure differential between said leading face and said rotor blade and said trailing face of said rotor blade during said power stroke that creates a force that rotates said rotor blade. 2. A cross-flow wind turbine system that is capable of capturing wind energy comprising: a rotor having at least two semicircular shaped rotor blades; an airfoil stator having at least one surface that has a portion that is curved, said airfoil stator positioned to capture and accelerate wind across said curved surface of said airfoil stator and provide a gap having a predetermined size between said rotor blades and said curved surface so that a negative pressure area is formed on a leading face of said rotor blades as said rotor blades pass by said curved surface during a power stroke; and a blocking stator positioned to substantially block wind from impeding upon said leading face of said rotor blades during a return stroke and direct wind that is blocked by said blocking stator onto a trailing face of said rotor blades during said power stroke such that a pressure differential is created between said leading face of said rotor blades and said trailing face of said rotor blades during said power stroke that creates a force that rotates said rotor blade. 3. A cross-flow wind turbine that generates mechanical energy from wind comprising: a rotor having a plurality of rotor blades that are substantially symmetrically disposed around a rotor; a rotor space formed in a volume that is swept out by said rotor blades, said rotor space having a drive portion in which said rotor blades are driven by said wind and a return portion in which said rotor blades return to said drive portion; a plurality of stators that direct wind into said drive portion and direct wind away from said return portion to cause said rotor to turn and generate said mechanical energy, said stators being placed around said rotor to provide a substantially bidirectional cross-flow turbine. 4. The cross-flow turbine of claim 3 wherein said rotor axis is vertical and said stators extend at least partially over a base so that said base and said stators capture wind along lower portions of said cross-flow turbine and direct winds from said lower portion of said cross-flow turbine. 5. A method of generating mechanical energy from wind comprising: providing a cross-flow wind turbine having stators and a rotor that sweeps out a rotor space, said rotor space having a drive portion and a return portion; placing a plurality of rotor blades substantially symmetrically around said rotor; placing said stators around said rotor in locations that substantially direct said wind into said drive portion of said rotor space so that said wind drives said rotor blades in said drive portion, and substantially block said wind from entering said return portion of said rotor space so that said rotor blades return to said drive portion to generate said mechanical energy. 6. The method of claim 5 wherein said process of placing said stators around said rotor further comprises: placing at least one stator in a position to block said wind from entering said return portion whenever said wind flows substantially from a first predetermined direction, and placing at least one other stator in a position to direct said wind into said drive portion whenever said wind is flowing substantially from said first predetermined direction. 7. The method of claim 5 wherein said process of placing said stators around said rotor, further comprises: placing at least one stator in a position to block said wind from entering said return portion whenever said wind flows substantially from a first and a second predetermined direction, and placing at least one other stator in a position to direct said wind into said drive portion whenever said wind is flowing substantially from said first and said second predetermined direction. 8. The method of claim 5 wherein: providing a cross-flow turbine comprises providing a vertical cross-flow turbine; and, placing said stators comprises placing said stators so that said stators at least partially extend over a base so that a utility enclosure and said stators direct wind from lower portions of said cross-flow turbine into said cross-flow turbine. 9. A method of capturing wind energy using a cross-flow wind turbine comprising: providing an airfoil stator that is positioned to capture and accelerate wind across an airfoil surface of said airfoil stator; generating a low pressure area on a leading face of a rotor blade by positioning said airfoil stator to form a predetermined gap between said rotor blade and said airfoil stator, said low pressure area generating a force on said leading face of said rotor blade that rotates said rotor blade in an efficient manner. 10. A cross-flow wind turbine system that is capable of capturing wind energy comprising: a rotor having at least two semicircular shaped rotor blades; an airfoil stator positioned to capture and accelerate wind across an airfoil surface of said airfoil stator and provide a gap having a predetermined size between said rotor blades and said airfoil surface so that a negative pressure area is formed on a leading face of said rotor blades as said rotor blades pass by said airfoil surface that creates a force that rotates said rotor blades.

이 특허에 인용된 특허 (83)

이 특허를 인용한 특허 피인용횟수: 5

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특허 상세정보

Cross-flow wind turbine

초록
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청구항
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이 특허에 인용된 특허 (83)

이 특허를 인용한 특허 피인용횟수: 5

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Cross-flow wind turbine

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이 특허에 인용된 특허 (83)

이 특허를 인용한 특허 피인용횟수: 5

IPC 상위 출원인

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상세정보조회

원문조회

IPC 상세정보(version : 201201)

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