CN201159137Y - Elevating force and resistance mixed vertical axis aerogenerator - Google Patents

Elevating force and resistance mixed vertical axis aerogenerator Download PDF

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Publication number
CN201159137Y
CN201159137Y CN 200820017859 CN200820017859U CN201159137Y CN 201159137 Y CN201159137 Y CN 201159137Y CN 200820017859 CN200820017859 CN 200820017859 CN 200820017859 U CN200820017859 U CN 200820017859U CN 201159137 Y CN201159137 Y CN 201159137Y
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CN
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Prior art keywords
blade
vertical axis
lift
wind turbine
axis wind
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CN 200820017859
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Chinese (zh)
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崔美娟
覃江碧
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崔美娟
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

Abstract

A lift-drag composite vertical axis wind generator comprises a support arm, a stator winding and a magnetic steel rotor, wherein one end of the support arm is fixedly connected with blades and the other end is connected with a central rotating shaft. The blade is a streamlined or airfoil blade with a circular blade head portion of which the lateral faces are provided with forward recessed unidirectional wind shield portions. The streamlined blade or the airfoil blade enables the lift-drag composite vertical axis wind generator to have the advantages of a lift-type vertical axis wind generator, including wind-energy full utilization and high efficiency. And the unidirectional wind shield portions acquire moment of rotation by shielding wind, which enables the lift-drag composite vertical axis wind generator to have the advantage of a drag-type wind generator, namely low starting torque.

Description

升力阻力复合型垂直轴风力发电机 Drag lift type vertical axis wind turbine Compound

技术领域 FIELD

本实用新型涉及风力发电机,具体的说是一种升力阻力复合型垂直轴风力发电机。 The present invention relates to a wind power generator, specifically a compound drag lift type vertical axis wind turbine.

背景技术 Background technique

垂直轴风力发电机的叶片在旋转的过程中受力比水平轴风力发电机的叶片好的多,使用寿命长,垂直轴风力发电机安装、维修方便。 Vertical axis wind turbine blade during rotation of the force better than the horizontal axis wind turbine blade, long life, vertical axis wind turbine installation and maintenance. 现有的垂直轴风力发电机根据叶片工作原理有升力型风力发电机和阻力型风力发电机,阻力型风力发电机启动力矩小,效率较低,叶片是流线型和机翼型的升力型风力发电机效率较高,启动力矩稍大。 Conventional vertical axis wind turbine blade according to the principle with a lift-type wind turbine generators and wind resistance, resistance to wind turbine low starting torque, low efficiency, and the blades are streamlined airfoil wind power lift higher machine efficiency, starting torque is slightly larger.

发明内容 SUMMARY

为了发挥阻力型垂直轴风力发电机和升力型垂直轴风力发电机各自的优点,本实用新型提供一种不仅是启动力矩小,而且充分利用风能,效率高的升力阻力复合型垂直轴风力发电机。 In order to play their respective advantages drag-type vertical axis wind turbine and the lift-type vertical axis wind turbine, the present invention not only provides a small starting torque, and full use of wind energy, high efficiency drag lift type vertical axis wind turbine Compound .

本实用新型上述发明目的是由以下的技术方案实现的: 一种升力阻力复合型垂直轴风力发电机,包括一端固定连接叶片1,另一端连接中心转轴8的支臂, 定子绕组6和磁钢转子7,其特征在于叶片1是流线型或机翼型叶片的圆形叶片头部15侧面有向前凹进的单向挡风部14。 The present invention the above object is achieved by the following technical solutions: A compound drag lift type vertical axis wind turbine, comprising a blade fixedly attached at one end 1 and the other end of the central shaft 8 of the arm, magnets and the stator winding 6 the rotor 7, characterized in that the blade is a circular blade a streamlined airfoil or blade side face 15 of the head portion is recessed forwardly unidirectional windshield 14.

流线型和机翼型叶片使升力阻力复合型垂直轴风力发电机具有升力型风力发电机充分利用风能,效率高的优点,而单向挡风部14阻挡风力获得转动力矩, 使升力阻力复合型垂直轴风力发电机具有阻力型风力发电机启动力矩小的优叶片1横截面上的叶片尾部12和叶片头尾连接部13的轮廓线呈直线或折线或弧线。 Streamlined airfoil blades to lift and drag the composite type vertical axis wind turbine having a lift-type wind turbines utilize wind energy sufficiently high efficiency advantages of the unidirectional wind wind barrier portion 14 the rotational moment is obtained, so that the vertical lift drag Compound axis wind turbine having a resistance as a wind turbine blade 1 starts a small cross section of the tail 12 and the blade torque preferably connected to the blade head and tail portions 13 straight contour or line or arc.

中心转轴8直接连接、驱动磁钢转子7。 Directly connected to the central shaft 8, the driving magnet rotor 7. 叶片1在风力作用下通过支臂带动中心转轴8、磁钢转子7转动发电,中心转轴8直接连接驱动磁钢转子7,使升力阻力复合型垂直轴风力发电机的结构简单、传动阻力减少,使用寿命长。 The wind vane 1 under the action of the central shaft 8 driven by the arm, the rotor magnet generator 7 is rotated, the center of the drive shaft 8 directly connected to the rotor magnet 7, the composite resistance of lift-type vertical axis wind turbine structure is simple, reducing the driving resistance, long lasting.

中心转轴8通过增速机构带动发电机的磁钢转子轴21转动。 Center shaft 8 via a speed increasing mechanism magnet driven generator rotor shaft 21 is rotated. 齿轮变速或皮带轮变速的增速机构使磁钢转子7获得较快的转速。 A gear shift transmission pulley or the speed increasing mechanism 7 so that the rotor magnet to obtain a faster speed.

叶片1的上、下部位分别固定连接上支臂16、下支臂2的一端,上支臂16、 下支臂2的另一端固定连接法兰盘3,法兰盘3连接、驱动中心转轴8。 The blade 1, the lower portions are fixedly connected to the arm 16, one end 2 of the lower arm, upper arm 16, the other end of the lower arm 2 is connected to the fixed flange 3, the flange 3 is connected to the central drive shaft 8. 上支臂16、下支臂2连接法兰盘3,受力点集中于法兰盘3,使升力阻力复合型垂直轴风力发电机抗风能力强,中心转轴8部位处磨损小。 On the support arm 16, the lower arm 2 is connected to the flange 3, the force point focus on the flange 3, so that the lift drag-type vertical axis wind turbine composite strong wind resistance, the shaft portion 8 at a central little wear.

至少3个叶片1组成一套风轮总成。 At least three wind turbine blades 1 form a set of assembly.

中心转轴8的下方有支架9,或者在中心转轴8的下方周边设置支架9。 8 below the center of the shaft holder 9 has, in the center or the periphery of the rotating shaft 8 of the bracket 9 is provided below. 本实用新型的优点是:流线型和机翼型叶片使升力阻力复合型垂直轴风力发电机具有升力型垂直轴风力发电机充分利用风能,效率高的优点,而单向挡风部阻挡风力获得转动力矩,使升力阻力复合型垂直轴风力发电机具有阻力型风力发电机启动力矩小的优点。 The utility model has the advantages: streamlined airfoil blades to lift and drag the composite type vertical axis wind turbine having a lift-type vertical axis wind turbine full use of wind energy, the advantages of high efficiency, but the one-way rotation is obtained of the wind wind barrier portion moment the drag lift type vertical axis wind turbine the composite resistance having a small wind turbine startup torque advantages. 附图说明 BRIEF DESCRIPTION

图1是本实用新型的结构示意图; 图2是图1中装有第一种叶片实施方式的俯视图; 图3是图1中装有第二种叶片实施方式的俯视图; 图4是图1中装有第三种叶片实施方式的俯视图; 图5是图1中装有第四种叶片实施方式的俯视图;图6是图1中装有第五种叶片实施方式的俯视图; 图7是本实用新型的机翼型叶片具有第二种单向挡风部的示意图; 图8是本实用新型的机翼型叶片具有第三种单向挡风部的示意图; 图9是本实用新型的机翼型叶片具有第四种单向挡风部的示意图; 图IO是本实用新型带有增速机构的一种实施方式的结构示意图; 图11是本实用新型带有增速机构的另一种实施方式的结构示意图; 图12是本实用新型的机翼型叶^具有第五种单向挡风部的示意图。 FIG. 1 is a structural diagram of the present invention novel; FIG. 2 is a plan view of a first embodiment of the blade of FIG. 1 with; FIG. 3 is a plan view of the FIG. 1 embodiment with the second embodiment of blade; FIG. 4 is a view of a with a plan view of a third embodiment of the blade; FIG. 5 is a plan view of the FIG. 1 embodiment with the fourth embodiment of the blade; FIG. 6 is a plan view of the FIG. 1 embodiment with a fifth embodiment of the blade; FIG. 7 is present the new airfoil blade having a second unidirectional wind schematic section; FIG. 8 is the present invention having a blade airfoil wind schematic way a third portion; FIG. 9 is a wing of the present invention type blade having a fourth unidirectional wind schematic section; FIG IO is a schematic view an embodiment of the present invention with a speed increasing mechanism; FIG. 11 is another embodiment of the present invention with a speed increasing mechanism schematic structural diagram of embodiment; FIG. 12 is a schematic view of a fifth portion of the way wind the present invention having wing airfoil ^. 具体实施方式 detailed description

图1所示是本实用新型一个实施方式的的结构示意图,叶片1的上、下部位别固定连接上支臂16、下支臂2的一端,上支臂16、下支臂2的另一端并拢由螺栓固定连接在法兰盘3上。 As shown in FIG. 1 is a structural diagram of an embodiment of the present invention is, on the blade 1, respectively the lower portion fixedly connected to the arm 16, one end 2 of the lower arm, upper arm 16, the other end of the lower arm 2 together fixedly it attached to the flange 3 by a bolt. 法兰盘3通过螺栓固定连接中心转轴8,碎钢转子7固定连接在中心转轴8的轴环上,中心转轴8直接驱动磁钢转子7转动。 3 is bolted to the flange connecting the central shaft 8, broken steel rotor shaft 7 is fixed on the center axis of the connection ring 8, the center of the direct drive shaft 8 of the rotor magnet 7 is rotated. 定子绕组6,磁钢转子7安装在发电机上端盖4、发电机下端盖5、外壳ll围成的空间内。 The stator winding 6, the rotor magnet 7 is mounted on the generator end cover 4, the cover 5, the housing space enclosed ll a generator. 支架9通过加强板10安装在中心转轴8下方的发电机下端盖5上。 9 mounting plate through the reinforcing bracket 10 in the cover 5 below the central rotational axis of the generator 8.

图2是显示了图1中装有第一种叶片形式的本实用新型实施方式,叶片1 是由横截面是机翼型叶片改进而成,机翼型叶片凸面一侧的叶片头部15后面有一个向前凹进的单向挡风部14,叶片尾部12通过叶片头尾连接部13连接单向挡风部14、叶片头部15,图中叶片l的一面凸起,另一面是平的,也可以是微微凹曲的,叶片1横截面上的叶片尾部12和叶片头尾连接部13的轮廓线呈折线,叶片头部15圆滑,叶片尾部12的端部较尖。 FIG 2 is a graph showing the blade 1 is installed in a first form of embodiment of the present invention, a blade airfoil blade 1 is improved by the cross section is made convex side of the blade head of the blade airfoil 15 behind there is a way forward wind recessed portions 14, 12 one-way-blade tail wind vane 14 is connected to the head and tail portion 13 through the connecting portion, the blade head 15, FIG. l side of the blade protrusion, the other surface is flat may be slightly concavely curved, a cross section of the blade trailing blade 12 and the blade head to tail contour shape of the fold line connecting portion 13, head portion 15 rounded blade, the end portion of the blade than the tip of the tail portion 12. 共五个叶片组成一套风轮总成。 A total of five blades consisting of a wind turbine assembly.

图3是显示了图1的本实用新型实施方式装有第二种叶片形式,叶片1是由横截面是流线型叶片改进而成,流线Mtf片的圆形叶片头部15后面两侧各有一个向前凹进的单向挡风部14,叶片尾部12通过叶片头尾连接部13连接单向挡风部14、叶片头部15,叶片1横截面上的叶片尾部12和叶片头尾连接部13 的轮廓线呈折线,叶片头部15圆滑,叶片尾部12的端部较尖。 FIG 3 is a graph showing the embodiment of the present invention with a second embodiment of FIG. 1 in the form of blades, the blade 1 is a cross-section of the blade is improved on streamlined, circular blade Mtf flow line back sheet 15 on each side of the head portion a unidirectional wind forwardly recessed portion 14, tail portion 12 connected to the blade portion 13 connected to the blade head to tail portion 14 through a check wind, the blade head 15, a cross section of the blade trailing blade 12 and the blade head and tail connection contour line 13 form folding lines, rounded blade head 15, the end portion of the blade than the tip of the tail portion 12. 共五个叶片1 组成一套风轮总成。 Composition of a total of five wind turbine blade 1 assembly.

图4是显示了图1的本实用新型实施方式装有第三种叶片形式,与图3的区别是叶片1横截面上的叶片尾部12和叶片头尾连接部13的轮廓线呈直线, 轮廓线斜向叶片尾部12的端部,共五+叶片1组成一套风轮总成。 FIG 4 is a graph showing the embodiment of the present invention with the third embodiment of FIG. 1 in the form of leaves, distinction and FIG. 3 is a cross section of a blade trailing blade 12 and the blade are connected head to tail portion 13 linearly contour, contour oblique line portion 12 of the blade aft end, a total of five + 1 consisting of a wind turbine blade assembly.

图5是显示了图1的本实用新型实施方式装有第四种叶片形式,与图3的区别是叶片头尾连接部13的前端有一段与叶片1轴线平行的直边,叶片头尾连接部13最宽处大于叶片头部15宽度。 FIG 5 is a graph showing the embodiment of the present invention provided with a fourth embodiment of FIG. 1 in the form of blades, the difference between FIG. 3 is a front end portion connected to the blade head and tail of the straight section 13 and a blade edge parallel to the axis, the blades are connected end to end 13 head portion 15 at its widest point is greater than the width of the blade. :

图6是显示了图1的本实用新型实施方式装有第五种叶片形式,叶片1也是由横截面是流线型叶片改进而成,流线型叶片的圆形叶片头部15后面两侧各有三个向前凹进的单向挡风部14,,两侧的单向挡风部14相对排布,呈鱼刺状, 叶片1横截面上的叶片尾部12和叶片头尾连接部13的轮廓线呈弧线。 FIG 6 is a fifth blade of the present invention with the embodiment of FIG. 1, the blade 1 is a cross-section of the blade is improved on streamlined, circular blade aerodynamic blade on each side of the head 15 behind the three wind way the front windshield unidirectional recessed portion 14 ,, 14 oppositely arranged on both sides, was fishbone shape, and contour lines 12 are connected head to tail blade blade blade portion 1 of the cross section of the tail portion 13 form an arc line.

图7至图9显示了另外三种由横截面是机翼型叶片改进而成叶片形式,它们分别相似于图4、图5、图6的叶片形式,不同之处是它们是半个图形。 7 to FIG. 9 shows a cross section of three additional airfoil blade improvements made in the form of blades, which are similar to FIG. 4, FIG. 5, FIG. 6 in the form of vanes, except that they are half pattern.

图2至图9显示了多种叶片1的形式,在由横截面是流线型叶片和机翼型叶片的基础上还可以形成许多符合本实用新型的叶片。 Figures 2 to 9 show various forms of the blade 1, can also be formed in many practical consistent with the new blade based on the blade and a streamlined cross section of the blade airfoil. one

图IO所示本实用新型带有增速机构的一种实施方式,中心转轴8通过增速机构带动发电机的磁钢转子轴21转动"磁钢转子安装套通过键连接磁钢转子轴21,磁钢转子7安装在磁钢转子安装套上。上支臂16与下支臂2平行,它们的内端分别固定连接在上法兰盘17、法兰盘3上,两个法兰盘通过风轮支架18固定成一体,由大齿轮19和小齿轮20组成了增速机构,大齿轮19固定安装在中心转轴8的下端,小齿轮20固定安装在磁钢转子轴21上,发电机上端盖4、发电机下端盖5、外壳11位与发电机上安装板23和下安装板22之间,支架9通过加强板10安装在中心转轴8下方的发电机下安装板22上。 This new type shown in FIG IO with one embodiment of the speed increasing mechanism, the central shaft 8 driven by the speed increasing mechanism of the generator rotor shaft utility magnet 21 'magnet rotor is mounted to sleeve shaft 21 is connected by a key magnet rotor, the rotor magnet 7 is mounted in the sleeve mounted magnet rotor on the support arm 16 and the lower supporting arm 2 in parallel, their inner ends are fixedly connected to the flange 17, the flange 3, by two flanges the rotor 18 integrally fixed to the bracket, by the large gear 19 and the pinion 20 constitute the speed increasing mechanism, the large gear 19 is fixedly mounted on the lower end of the central shaft 8, a pinion gear 20 fixedly mounted on the shaft of the rotor magnet 21, the upper end of the generator 4 cover, a generator cover 5, the housing 11 and the mounting plate 23 and the lower plate 22 mounted on the generator, the holder 9 is mounted on the generator of the central shaft 22 below the mounting plate 8 by a reinforcing plate 10.

图11所示本实用新型带有增速机构的另一种实施方式,与图10的区别是没有发电机下安装板22,支架9在中心转轴8.周边,固定在发电机上安装板23 的外缘。 As shown in FIG. 11 of the present invention with another embodiment of the speed increasing mechanism, FIG. 10 differs from the mounting plate 22 is not a generator, the holder 9 outside the shaft 8. In the center of plate 23 is fixedly mounted on the generator the outer edge.

图12显示了另外一种由横截面是机翼型叶片改进而成叶片形式,它与图2 中的叶片1相似,不同之处是在另一个直面有四个鱼剌状的单向挡风部14。 12 shows another airfoil blade is improved by the cross-sectional form of the blade is made, which is similar to the blade 2 in FIG. 1, except there is another face-shaped four-way fish puncture wind 14.

Claims (7)

  1. 1、一种升力阻力复合型垂直轴风力发电机,包括一端固定连接叶片(1),另一端连接中心转轴(8)的支臂,定子绕组(6)和磁钢转子(7),其特征在于叶片(1)是流线型或机翼型叶片的圆形叶片头部(15)侧面有向前凹进的单向挡风部(14)。 A drag lift type vertical axis wind turbine composite, comprising a stationary blade end connection (1), the other end of the central shaft (8) of the arm, the stator winding (6) and rotor magnets (7), characterized in in that the blade (1) is rounded or streamlined airfoil blade head of the blade (15) has a side surface portion is recessed forwardly of the wind-way (14).
  2. 2、 根据权利要求l所述的升力阻力复合型垂直轴风力发电机,其特征在于叶片(1)横截面上的叶片尾部(12)和叶片头尾连接部(13)的轮廓线呈直线或折线或弧线。 2, l according to the lift resistance of composite vertical axis wind turbine, wherein the blade-blade tail (12) (1) and the cross section of the blade head and tail connecting portion (13) of claim straight contour or polylines or arcs.
  3. 3、 根据权利要求l所述的升力阻力复合型垂直轴风力发电机,其特征在于中心转轴(8)直接连接、驱动磁钢转子(7)。 3, the drag lift l composite vertical axis wind turbine according to claim, characterized in that the central shaft (8) is directly connected, drive the rotor magnets (7).
  4. 4、 根据权利要求1所述的升力阻力复合型垂直轴风力发电机,其特征在于中心转轴(8)通过增速机构带动发电机的磁钢转子轴(21)转动。 4, the lift according to claim 1, wherein the resistance of the composite type vertical axis wind turbine, characterized in that the central shaft (8) driven by a magnetic steel rotor shaft of the generator speed increasing mechanism (21) is rotated.
  5. 5、 根据权利要求1或2所述的升力阻力复合型垂直轴风力发电机,其特征在于叶片(1)的上、下部位分别固定连接上支臂(16)、下支臂(2)的一端, 上支臂(16)、下支臂(2)的另一端固定连接法兰盘(3),法兰盘(3)连接、 驱动中心转轴(8)。 5, according to claim 1 or claim 2 lift drag-type vertical axis wind turbine the composite, characterized in that the blade (1) and lower portions are fixedly connected to the arm (16), the arm (2) One end of the other end, the arm (16), the arm (2) is fixedly connected to the flange (3), the flange (3) is connected to the central drive shaft (8).
  6. 6、 根据权利要求5所述的升力阻力复合型垂直轴风力发电机,其特征在于至少(3)个叶片(1)组成一套风轮总成。 6, according to the lift resistance of the compound 5 the vertical axis wind turbine as claimed in claim, characterized in that at least (3) the blade (1) consisting of a wind turbine assembly.
  7. 7、 根据权利要求1或3或4所述的升力阻力复合型垂直轴风力发电机,其特征在于中心转轴(8)的下方有支架(9),或者在中心转轴(8)的下方周边设置支架(9)。 7, the lift according to claim 1 or claim 3 or 4, wherein the resistance of the composite type vertical axis wind turbine, characterized in that below the center axis (8) of a bracket (9), or below the periphery of the shaft disposed in the center (8) support (9).
CN 200820017859 2008-02-05 2008-02-05 Elevating force and resistance mixed vertical axis aerogenerator CN201159137Y (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832226A (en) * 2010-06-08 2010-09-15 河南科技大学 Lift and resistance composite wind-driven vertical shaft wind generator and wind wheel thereof
CN101956654A (en) * 2010-05-28 2011-01-26 大连工业大学 Vertical axis type wind power generation impeller
CN102022258A (en) * 2010-11-29 2011-04-20 张远林 Vertical axis wind driven generator with higher wind energy utilization efficiency
CN102192098A (en) * 2010-03-19 2011-09-21 丁树才 Efficient and low-speed wing-type vertical-shaft wind driven generator
CN102536643A (en) * 2012-01-16 2012-07-04 哈尔滨工程大学 Vertical axis wind turbine
CN102536668A (en) * 2010-12-30 2012-07-04 沈小圣 Wind energy, water energy and solar energy combined power generation device
CN102900632A (en) * 2012-11-08 2013-01-30 浙江风光新能源科技有限公司 Wind driven generator blade device with wind scooper
WO2013190117A1 (en) * 2012-06-22 2013-12-27 VP Windkraft UG (haftungsbeschränkt) & Co. KG Rotor for a vertical-axis wind turbine
CN106438201A (en) * 2015-08-07 2017-02-22 张财年 Qiu mountain wind generating set

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192098A (en) * 2010-03-19 2011-09-21 丁树才 Efficient and low-speed wing-type vertical-shaft wind driven generator
CN101956654B (en) 2010-05-28 2012-07-18 大连工业大学 Vertical axis type wind power generation impeller
CN101956654A (en) * 2010-05-28 2011-01-26 大连工业大学 Vertical axis type wind power generation impeller
CN101832226A (en) * 2010-06-08 2010-09-15 河南科技大学 Lift and resistance composite wind-driven vertical shaft wind generator and wind wheel thereof
CN102022258A (en) * 2010-11-29 2011-04-20 张远林 Vertical axis wind driven generator with higher wind energy utilization efficiency
CN102022258B (en) 2010-11-29 2012-09-19 张远林 Vertical axis wind driven generator with higher wind energy utilization efficiency
CN102536668A (en) * 2010-12-30 2012-07-04 沈小圣 Wind energy, water energy and solar energy combined power generation device
CN102536643A (en) * 2012-01-16 2012-07-04 哈尔滨工程大学 Vertical axis wind turbine
WO2013190117A1 (en) * 2012-06-22 2013-12-27 VP Windkraft UG (haftungsbeschränkt) & Co. KG Rotor for a vertical-axis wind turbine
CN102900632A (en) * 2012-11-08 2013-01-30 浙江风光新能源科技有限公司 Wind driven generator blade device with wind scooper
CN106438201A (en) * 2015-08-07 2017-02-22 张财年 Qiu mountain wind generating set

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