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WO2009030113A1 - A vertical-axis blade - Google Patents

A vertical-axis blade Download PDF

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Publication number
WO2009030113A1
WO2009030113A1 PCT/CN2008/001548 CN2008001548W WO2009030113A1 WO 2009030113 A1 WO2009030113 A1 WO 2009030113A1 CN 2008001548 W CN2008001548 W CN 2008001548W WO 2009030113 A1 WO2009030113 A1 WO 2009030113A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
vertical
windward
blades
leeward
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2008/001548
Other languages
English (en)
French (fr)
Inventor
Jinfeng Zhao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2009030113A1 publication Critical patent/WO2009030113A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/70—Shape
    • F05B2250/71—Shape curved
    • F05B2250/711—Shape curved convex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/70—Shape
    • F05B2250/71—Shape curved
    • F05B2250/712—Shape curved concave
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present invention relates to improvements in the vertical axis blade structure of a wind power generator.
  • the blades of a wind turbine are usually divided into two types, one is to set the blades on the axis parallel to the ground, and the other is to set the blades on the axis perpendicular to the ground, called the vertical axis blades.
  • the vertical shaft blade power generation device can eliminate the cumbersome rotating platform; therefore, the structure is relatively simple, but the current blade structure is not reasonable, affecting the wind utilization efficiency, and affecting the power generation.
  • the present invention has been made in view of the above problems, and provides a vertical shaft blade which can improve the utilization efficiency of wind.
  • the present invention includes a vertical central axis, the structural points of which are evenly distributed with an odd number of blades outside the vertical central axis, and one side of the cross section of the blade is a streamlined curved windward surface, opposite to the windward surface. The other side is a concave leeward side.
  • the vertical central axis of the present invention is evenly distributed with an odd number of blades, one side of the cross section of the blade is a streamlined curved windward surface, and the other side of the windward side is a concave leeward surface, which can be oriented regardless of the wind direction.
  • the blades of the invention are fully utilized, and therefore, the power generation of the wind turbine can be improved.
  • Figure 1 is a schematic view of the structure of the present invention
  • Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1;
  • the present invention comprises a vertical central axis 1 , an even number of blades 2 being evenly distributed outside the vertical central axis 1 , one side of the section of the blade 2 being a streamlined curved windward face 5 and the other side of the opposite windward face 5 being Concave leeward
  • a cylinder 3 may be disposed between the windward surface 5 and the leeward surface 4 of the blade 2, and the cylinder 3 is connected to the windward surface 5 and the leeward surface 4, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Description

垂直轴叶片
技术领域：
本发明是涉及风力发电机的垂直轴叶片结构的改进。
背景技术：
风力发电机的叶片通常分为两种，一种是在平行于地面的轴上设置叶 片， 另一种是在垂直于地面的轴上设置叶片， 称为垂直轴叶片。 垂直轴叶 片的发电装置可省去笨重的旋转平台； 因此， 结构相对比较简单， 但目前 叶片的结构不尽合理， 影响了风的利用效率， 也就影响了发电功率。
发明内容：
本发明就是针对上述问题， 提供一种可提高风的利用效率的垂直轴叶 片。
为实现上述目的， 本发明采用如下技术方案， 本发明包括垂直中心轴, 其结构要点垂直中心轴外均布有奇数个叶片， 叶片的截面的一侧为流线弧 形迎风面， 相对迎风面的另一侧为凹形背风面。
本发明的有益效果：
由于本发明的垂直中心轴外均布有奇数个叶片， 叶片的截面的一侧为 流线弧形迎风面， 相对迎风面的另一侧为凹形背风面， 无论什么风向， 都 可为本发明的叶片所充分利用， 因此， 可提高风力发电机的发电功率。
附图说明：
图 1是本发明的结构示意图；
图 2是图 1的 A-A剖视图。
I
确认本 具体实施方式： 本发明包括垂直中心轴 1 , 垂直中心轴 1外均布有奇数个叶片 2， 叶片 2的截面的一侧为流线弧形迎风面 5，相对迎风面 5的另一侧为凹形背风面
为增加本发明的叶片 2的强度，可在叶片 2的迎风面 5、背风面 4之间 设置有圆筒 3， 圆筒 3分别同迎风面 5、 背风面 4相连。

Claims

权利要求书
1、 垂直轴叶片， 包括垂直中心轴 （1 )， 其特征在于垂直中心轴 （1 ) 外均布有奇数个叶片（2)， 叶片（2)的截面的一侧为流线弧形迎风面（5)， 相对迎风面 （5) 的另一侧为凹形背风面 （4)。
2、 根据权利要求 1 所述的垂直轴叶片， 其特征在于在叶片 （2) 的迎 风面（5)、背风面（4)之间设置有圆筒（3), 圆筒（3)分别同迎风面（5)、 背风面 （4) 相连。
PCT/CN2008/001548 2007-09-03 2008-08-29 A vertical-axis blade Ceased WO2009030113A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710012658.4 2007-09-03
CNA2007100126584A CN101382116A (zh) 2007-09-03 2007-09-03 垂直轴叶片

Publications (1)

Publication Number Publication Date
WO2009030113A1 true WO2009030113A1 (en) 2009-03-12

Family

ID=40428452

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001548 Ceased WO2009030113A1 (en) 2007-09-03 2008-08-29 A vertical-axis blade

Country Status (2)

Country Link
CN (1) CN101382116A (zh)
WO (1) WO2009030113A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2009286C2 (en) * 2012-08-06 2014-02-10 Stichting Energie Swallow tail airfoil.
US11136958B2 (en) 2012-08-06 2021-10-05 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Swallow tail airfoil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132470A (en) * 1980-03-21 1981-10-16 Hitachi Zosen Corp Turbine using flexible blades
DE8900730U1 (de) * 1988-06-23 1989-04-20 Tonne, Kurt, 2830 Bassum Windkraftvorrichtung
US5971820A (en) * 1995-08-18 1999-10-26 Morales; Juan Alberto Parallel fluid flow wind and water mills
CN2413048Y (zh) * 2000-03-03 2001-01-03 容文添 新型风力发电机
CN2918779Y (zh) * 2006-05-18 2007-07-04 阚泽 翎式风力发电机组风轮叶片
CN201116511Y (zh) * 2007-09-03 2008-09-17 赵金峰 垂直轴叶片

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132470A (en) * 1980-03-21 1981-10-16 Hitachi Zosen Corp Turbine using flexible blades
DE8900730U1 (de) * 1988-06-23 1989-04-20 Tonne, Kurt, 2830 Bassum Windkraftvorrichtung
US5971820A (en) * 1995-08-18 1999-10-26 Morales; Juan Alberto Parallel fluid flow wind and water mills
CN2413048Y (zh) * 2000-03-03 2001-01-03 容文添 新型风力发电机
CN2918779Y (zh) * 2006-05-18 2007-07-04 阚泽 翎式风力发电机组风轮叶片
CN201116511Y (zh) * 2007-09-03 2008-09-17 赵金峰 垂直轴叶片

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2009286C2 (en) * 2012-08-06 2014-02-10 Stichting Energie Swallow tail airfoil.
WO2014025252A1 (en) * 2012-08-06 2014-02-13 Stichting Energieonderzoek Centrum Nederland Swallow tail airfoil
US9897067B2 (en) 2012-08-06 2018-02-20 Stichting Energieonderzoek Centrum Nederland Swallow tail airfoil
US11136958B2 (en) 2012-08-06 2021-10-05 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Swallow tail airfoil

Also Published As

Publication number Publication date
CN101382116A (zh) 2009-03-11

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