JP2019070368A - Vertical long blade and vertical axis rotor - Google Patents

Vertical long blade and vertical axis rotor Download PDF

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JP2019070368A
JP2019070368A JP2017197625A JP2017197625A JP2019070368A JP 2019070368 A JP2019070368 A JP 2019070368A JP 2017197625 A JP2017197625 A JP 2017197625A JP 2017197625 A JP2017197625 A JP 2017197625A JP 2019070368 A JP2019070368 A JP 2019070368A
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blade
inward
inclined portion
longitudinal
vertical
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JP6997580B2 (en
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鈴木　政彦
Masahiko Suzuki
政彦 鈴木
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Global Energy Co Ltd
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Global Energy Co Ltd
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    • 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
    • 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

Abstract

To provide a vertical long blade in which an angle of an inclination proximal end part of an inward inclination part in a blade tip of a lift type vertical long blade is inclined in a blade tip direction relative to a horizontal direction at a rear edge side, and to provide a vertical axis rotor including the same.SOLUTION: A lift type vertical long blade 1 is formed with inward inclination part 3, 4 at the blade tips thereof. Rear edge parts 6B in inclination proximal end lines 6 on insides of the inward inclination part 3, 4 are inclined toward directions of blade tips 3A, 4A relative to front edge parts 6A.SELECTED DRAWING: Figure 1

Description

本発明は、縦軸風水車における揚力型の縦長ブレードの翼端に設けた内向傾斜部の傾斜基端部の角度を水平方向に対して、後縁の方を先端方向に傾斜させた縦長ブレードと、これを備える縦軸ロータに関する。   The present invention is a longitudinal blade in which the angle of the inclined base end portion of the inward inclined portion provided at the wing end of a lift type longitudinal blade in a vertical axis wind turbine is inclined in the direction of the trailing edge toward the tip with respect to the horizontal direction. And a longitudinal rotor comprising the same.

縦軸風車における縦長ブレードの翼端部に、内向傾斜部を形成したものとしては、例えば特許文献１に記載されている。   For example, Patent Document 1 describes an inward inclined portion formed at the wing end portion of a vertically elongated blade in a vertical axis wind turbine.

特開２０１０−２６１４１５号公報JP, 2010-261415, A

特許文献１に記載されている発明においては、垂直の主部に対して、傾斜部の基端部は水平とされている。この内向傾斜部の内側面を通過する気流は、後縁端部で、斜め上方向に通過するが、傾斜部の基端部が水平であるため、円滑に斜め上方へ抜けにくい。
本発明は、これに鑑みて、内向傾斜部の内側面に沿う気流を、円滑に後縁の斜め上方向に通過させるようにした縦長ブレードと、この縦長ブレードを備える風水車用の縦軸ロータを提供することを目的としているものである。 In the invention described in Patent Document 1, the base end of the inclined portion is horizontal with respect to the vertical main portion. The air flow passing through the inner surface of the inward inclined portion passes obliquely upward at the rear end, but it is difficult to smoothly and obliquely upward because the base end of the inclined portion is horizontal.
In view of this, the present invention is directed to a vertically elongated blade adapted to smoothly pass the air flow along the inner surface of the inward inclined portion in the diagonally upward direction of the trailing edge, and a longitudinal rotor for a wind turbine having the longitudinally elongated blade. The purpose is to provide

本発明は前記課題を解決するために、次のような技術的手段を講じた。   The present invention takes the following technical measures in order to solve the problems.

（１） 揚力型の縦長ブレードの翼端に、内向傾斜部を形成してなり、かつ内向傾斜部の内側面における傾斜基端線の後縁部を、前縁部の位置よりも翼端方向へ向かって傾斜してなる縦長ブレード。   (1) An inward inclined portion is formed at the wing end of the lift type longitudinal blade, and the trailing edge of the inclined base line on the inner surface of the inward inclined portion is in the wing direction from the position of the leading edge Longitudinal blade which inclines toward it.

（２）前記、傾斜基端線の傾斜角度は、水平線に対して５°±２°である前記（1）に記載の縦長ブレード。  (2) The vertically elongated blade according to (1), wherein the inclination angle of the inclined base line is 5 ° ± 2 ° with respect to the horizontal line.

（３）前記内向傾斜部の先端は、平面視で後縁方向へ向かって傾斜している前記（1）または（2）に記載の縦長ブレード。   (3) The longitudinally elongated blade according to (1) or (2), wherein the tip end of the inward inclined portion is inclined toward the rear edge in a plan view.

（４）前記（1）〜（3）のいずれかに記載の縦長ブレードを備えた縦軸ロータ。   (4) A vertical axis rotor provided with the vertically elongated blade according to any one of (1) to (3).

本発明によると、次のような効果が奏せられる。   According to the present invention, the following effects can be achieved.

前記（1）に記載の発明においては、縦軸ロータにおける縦長揚力型ブレードの内向傾斜部の、内向傾斜部の内側の傾斜基端線における後縁部が、前縁部の位置よりも翼端方向へ向かって傾斜しているので、傾斜された傾斜部の先端は、平面視で後縁方向へ傾斜することになる。そのため、水平に傾斜したものに対して、内向傾斜部の後縁が前縁よりも翼端方向に傾斜する。ロータが回転すると、前縁に当って内側面に沿って通過する流体は、後縁で抵抗から解放される。
これに対し、外側面に沿って通過する流体は、迎角となる膨出面に当たって、コアンダ効果による内側面よりも高速で通過するため、内側面に沿う気流を内側に押え込むように通過し、その反作用により、ブレードを回転方向へ押し出す。
ブレードの内側面に当たって傾斜部の方へ移動する流体は、傾斜部の内側面が、前縁の方が後縁よりも内側にあるので、これを前縁方向へ押しながら、後方へ通過することになる。 In the invention described in (1), the trailing edge of the inward inclined portion of the inward inclined portion of the vertical lift type blade in the vertical axis rotor at the inclined base line inside the inward inclined portion is the wing tip more than the position of the leading edge Since it inclines in the direction, the tip of the inclined slope is inclined toward the rear edge in plan view. Therefore, the trailing edge of the inward inclined portion is inclined toward the tip end more than the leading edge with respect to the horizontally inclined one. As the rotor rotates, fluid passing along the inside surface against the leading edge is relieved of resistance at the trailing edge.
On the other hand, the fluid passing along the outer surface strikes the bulging surface at the angle of attack and passes at a higher speed than the inner surface due to the Coanda effect, so it passes so as to press the air flow along the inner surface inwards. The reaction pushes the blade in the direction of rotation.
The fluid moving toward the inclined portion against the inner surface of the blade passes backward while pushing the inner surface of the inclined portion toward the leading edge since the inner edge of the inclined portion is more inward than the trailing edge. become.

前記（2）に記載の発明における傾斜基端線の傾斜角度は、水平線に対して５°±２°としてあるので、傾斜部の先端を、５°前後、後向きにすることができる。その結果、傾斜部の内側面に当たって傾斜部へ移動する気流が、傾斜部を前縁方向へ押しながら通過することとなり、ブレードの回転効率は高められる。   Since the inclination angle of the inclined base line in the invention described in (2) is 5 ° ± 2 ° with respect to the horizontal line, the tip of the inclined portion can be turned back by about 5 °. As a result, the air flow that strikes the inner surface of the inclined portion and moves to the inclined portion passes while pushing the inclined portion toward the front edge, and the rotation efficiency of the blade is enhanced.

前記（3）に記載の発明における内向傾斜部の先端は、平面視で後縁方向へ向いて傾斜しているので、ブレードの回転に伴って、ブレードの回転トラック内に生じる竜巻状の上昇気流が、傾斜部の内側面に当り後縁方向に通過するため、その反作用により、ブレードの回転効率は高められる。   The tip of the inward inclined portion in the invention described in (3) is inclined toward the trailing edge in a plan view, so that a tornado-like updraft generated in the rotating track of the blade as the blade rotates. However, since it strikes the inner surface of the inclined portion and passes in the trailing edge direction, the reaction improves the rotational efficiency of the blade.

前記（4）に記載の発明においては、ロータの回転にともなって、ブレードの内側面に当って内向傾斜部の内側面に沿って通過する流体の反作用が、ブレードの回転効率を高めるので、縦軸ロータの回転効率が高まり、風水力発電装置に使用して効率の良い発電をさせることができる。   In the invention described in the above (4), since the reaction of the fluid passing along the inner surface of the inward inclined portion on the inner surface of the blade with the rotation of the rotor enhances the blade's rotational efficiency, The rotation efficiency of the shaft rotor is enhanced, and it can be used for a wind and water power generator to generate efficient power.

本発明の縦長ブレードの内側面図である。It is an inner side view of the longitudinal blade of the present invention. 図１に示す縦長ブレードの拡大平面図である。It is an enlarged plan view of the longitudinal blade shown in FIG. 図１の縦長ブレードを備える縦軸ロータの正面図である。FIG. 2 is a front view of a longitudinal rotor comprising the longitudinal blade of FIG. 1; 図３におけるIV-IV線横断面図である。FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

本発明の一実施形態を図面を参照して説明する。図に示す揚力型の縦長ブレード１の主部２の上下の端に、内側方向へ３５°〜４５°傾斜する内向傾斜部３、４が、上下対称に形成されている。   An embodiment of the present invention will be described with reference to the drawings. At the upper and lower ends of the main part 2 of the lift type vertical blade 1 shown in the drawing, inward inclined portions 3 and 4 which are inclined inward by 35 ° to 45 ° are formed symmetrically in the vertical direction.

回転にともなって縦長ブレード１の内側面に当たる気流は上下端部方向へ移動し、傾斜部３、４に当たることでこれを回転方向に押すため、傾斜部３、４のない縦長ブレードよりも回転効率が高まる。   The air flow that strikes the inner surface of the longitudinal blade 1 moves toward the upper and lower ends as it rotates, and pushes against the inclined portions 3 and 4 in the rotational direction, so that the rotation efficiency is higher than that of the longitudinal blade without the inclined portions 3 and 4 Increase.

内向傾斜部３、４の上下方向の長さは、縦長ブレード１の弦長の約２分の１としてある。縦長ブレード１の弦長は、図４に示す縦軸ロータ７の回転半径のほぼ２分の１としてある。実地試験では、この数値を標準とするものが好ましい回転効率が得られた。   The vertical length of the inward inclined portions 3 and 4 is about half the chord length of the vertically long blade 1. The chord length of the vertically elongated blade 1 is approximately one half of the rotation radius of the vertical axis rotor 7 shown in FIG. In the field test, one having this value as a standard gave favorable rotational efficiency.

図１において、内向傾斜部３、４の折曲基端部と、主部２の前縁２Ａにおける交点６Ａと、内向傾斜部３、４の基端部と後縁２Ｂにおける交点６Ｂとを結ぶ折曲基端線６は、前縁２Ａにおける交点６Ａを通る基準水平線５に対して、後縁２Ｂにおける交点６Ｂが、翼端３Ａ、４Ａ方向へ近くなるように傾斜されている。
この傾斜角度は５°± ２°で、実験的に５°が最良で、３°より小であると効果が低く、７°よりも大であると回転抵抗が大となる。 In FIG. 1, connecting the bending base end portions of the inward inclined portions 3 and 4, the intersection point 6A at the front edge 2A of the main portion 2, and the intersection point 6B at the rear end 2B and the base end portions of the inward inclination portions 3 and 4 The bending base line 6 is inclined such that the intersection 6B at the trailing edge 2B is closer to the wing tips 3A and 4A with respect to the reference horizontal line 5 passing through the intersection 6A at the leading edge 2A.
The inclination angle is 5 ° ± 2 °, the best at 5 ° experimentally, and less than 3 ° is less effective, and greater than 7 ° increases rotational resistance.

従来の縦長ブレードの傾斜部は、図１に示す基準水平線５を折曲基端線として傾斜されているが、本発明では、水平ではなく傾斜している折曲基端線６を傾斜基端として、内向きに傾斜されているので、翼端３Ａ、４Ａは、図２におけるＡ矢示線上になるように、中心線Ｓに近寄るように傾斜している。この傾斜部３、４の厚さは、主部２から傾斜部３、４の先端にかけて、同じ形で次第に薄く形成されている。   The inclined portion of the conventional longitudinal blade is inclined with the reference horizontal line 5 shown in FIG. 1 as the bending base line, but in the present invention, the inclined base line 6 which is not horizontal but inclined is inclined at the base end Since the tip is inclined inward, the wing tips 3A, 4A are inclined so as to approach the center line S so as to be along the arrow A in FIG. The thickness of the inclined portions 3 and 4 is gradually thinner in the same shape from the main portion 2 to the tips of the inclined portions 3 and 4.

図３は、縦主軸８の周囲に、固定具９に固定された支持腕１０を介して複数（図では２枚）の縦長ブレード１、１を対称に配設した縦軸ロータ７（以下単にロータという）の正面図である。   FIG. 3 shows a longitudinal rotor 7 (hereinafter simply referred to simply as “a plurality of (two in the figure) longitudinally elongated blades 1, 1 symmetrically arranged around a longitudinal spindle 8 via a support arm 10 fixed to a fixture 9. It is a front view of a rotor).

縦長ブレード１の長さは、回転半径の約２倍、弦長は回転半径の約２分の１としてあり、また縦長ブレード１の厚さは弦長のほぼ２０％としてある。実験を重ねた結果、この数値が良好な回転効率が得られた。   The length of the longitudinal blade 1 is about twice the turning radius, the chord length is about one half of the turning radius, and the thickness of the longitudinal blade 1 is about 20% of the chord length. As a result of repeating the experiment, this numerical value obtained good rotational efficiency.

図３においてロータ７が回転すると、縦長ブレード１の内側面に当たる気流は、傾斜部３、４の方向に移動して当り、図２に示すように、平面視で前縁２Ａ方向から後縁２Ｂの外側方向に向かってＸ矢示方向へ通過して、縦長ブレード１の回転効率を高める。   In FIG. 3, when the rotor 7 rotates, the air flow that strikes the inner surface of the longitudinal blade 1 moves in the direction of the inclined portions 3 and 4 and strikes it, and as shown in FIG. Pass in the direction indicated by the arrow X to increase the rotational efficiency of the longitudinal blade 1.

また、図３における右側の縦長ブレード１の傾斜部３のように、内側面３Ｂは平坦であるが、外側面３Ｃは図４における主部２の断面のように、外側面２Ｄは膨らんでいるので、この外側面３Ｃを通過する気流は、内側面３Ｂを通過する気流よりも高速となって通過し、その反作用で縦長ブレード１の回転効率が高められる。   Further, as in the inclined portion 3 of the vertically-long blade 1 on the right side in FIG. 3, the inner side surface 3B is flat, but the outer side surface 3C is expanded as in the cross section of the main portion 2 in FIG. Therefore, the air flow passing through the outer side surface 3C passes at a higher speed than the air flow passing through the inner side surface 3B, and the rotational efficiency of the vertically elongated blade 1 is enhanced by the reaction.

図３の状態でロータ７が高速回転すると、縦長ブレード１の回転トラックの内側における空気は、気圧の差で外側へ押し出され、次第に内側は減圧され、その結果外側から常圧の気流が内側に吸い込まれ、竜巻現象を起こし、負圧で軽い気流は上昇する。
上部の内向傾斜部３の内側面に当たって、図３におけるＸ矢示方向に抜け、その反作用として、縦長ブレード１を回転方向に押し出し、回転効率を高める。 When the rotor 7 rotates at high speed in the state of FIG. 3, the air inside the rotating track of the longitudinal blade 1 is pushed outward due to the pressure difference, and the pressure is gradually reduced inside, so that the normal pressure air flow is inward from the outside. Inhaled, causing a tornado phenomenon, the light air flow rises under negative pressure.
The inner side surface of the upper inward inclined portion 3 is hit in the direction indicated by the arrow X in FIG. 3, and as a reaction, the longitudinally elongated blade 1 is pushed out in the rotation direction to increase the rotation efficiency.

ロータ７の回転に伴い縦長ブレード１の回転トラック内の気圧が下がることで、回転している縦長ブレード１の内側へ外部の大気圧が吸い込まれ、軽い渦流となって外部へ抜ける気流は、図１における内向傾斜部３の斜め後方へ、水平に対して、およそ５°程度上向きのＸ矢示方向へ抜けるので、その反作用は、水平に近い方向へ作用し、回転効率を高めることとなる。   As the air pressure in the rotating track of the long blade 1 lowers with the rotation of the rotor 7, the external atmospheric pressure is sucked into the rotating long blade 1 and the air flow out as a light vortex is shown in FIG. Since it deviates in the direction of the arrow X upward approximately 5 ° with respect to the horizontal direction obliquely backward of the inward inclined portion 3 in 1, the reaction acts in the direction close to the horizontal direction to improve the rotation efficiency.

前記上昇する気流の抜ける方向は、平面視では、図２におけるＸ矢示方向であり、縦長ブレード１の前面２Ｃに対して約５°ほど後外向きになるので、このＸ矢示方向に高速で通過する気流の反作用により、縦長ブレード１は回転方向へ強く押し出されることとなる。   The direction in which the rising airflow escapes is the direction indicated by the arrow X in FIG. 2 in plan view, and it is directed backward by about 5 ° with respect to the front surface 2C of the longitudinal blade 1, so high speed in the direction indicated by the arrow X As a result of the reaction of the air flow passing through, the vertically elongated blade 1 is strongly pushed out in the rotational direction.

このように、傾斜部３、４の傾斜基端線６を、前縁２Ａよりも後縁２Ｂの方を翼端３Ａ、４Ａの方へ向かって傾斜させたことによって、縦長ブレード１に当たる気流を後縁２Ｂ方向へ導くことができ、その反作用により縦軸ロータ７の回転効率を容易に高くすることができ、これを風水力発電装置に利用するとき、高効率の発電をさせることができる。   In this manner, the airflow which strikes the longitudinally elongated blade 1 is made by inclining the inclined base end line 6 of the inclined portions 3 and 4 toward the wing tips 3A and 4A toward the trailing edge 2B than the leading edge 2A. It is possible to lead in the direction of the trailing edge 2B, and by the reaction, the rotational efficiency of the vertical axis rotor 7 can be easily increased, and when this is used for a wind and water power generation device, highly efficient power generation can be achieved.

縦軸ロータの回転効率が高いので、これを利用して高効率の縦軸風車や水車を形成し、風水力発電装置とすることができる。   Since the rotation efficiency of the vertical axis rotor is high, it can be used to form a high efficiency vertical axis wind turbine or water turbine to make a wind and water power generator.

１．縦長ブレード
２．主部
２Ａ．前縁
２Ｂ．後縁
３、４．内向傾斜部
３Ａ、４Ａ．先端
５．水平線
６．傾斜基端線
７．縦軸ロータ
８．縦主軸
９．固定具
１０．支持腕
Ｓ．中央線
Ｘ．風流 1. Vertical blade 2. Main part 2A. Leading edge 2B. Trailing edge 3,4. Inward inclined portions 3A, 4A. Tip 5. Horizontal line 6. Inclined base line 7. Vertical axis rotor 8. Vertical spindle 9. Fasteners 10. Support arm S. Central line X. Wind

Claims (4)

揚力型の縦長ブレードの翼端に内向傾斜部を形成してなり、かつ内向傾斜部の内側の傾斜基端線における後縁部を、前縁部の位置よりも翼端方向へ向かって傾斜してなることを特徴とする縦長ブレード。   An inward inclined portion is formed on the tip of the lift-type longitudinal blade, and the trailing edge at the inward inclined base line of the inward inclined portion is inclined toward the tip of the blade relative to the position of the leading edge. Longitudinal blades characterized by 前記傾斜基端線の傾斜角度は、水平線に対して５°±２°であることを特徴とする請求項１に記載の縦長ブレード。   The long blade according to claim 1, wherein the inclination angle of the inclined base line is 5 ° ± 2 ° with respect to the horizontal line. 前記内向傾斜部の先端を、平面視で後縁方向へ向かって傾斜してなることを特徴とする請求項１または２に記載の縦長ブレード。   The longitudinal blade according to claim 1 or 2, wherein a tip end of the inward inclined portion is inclined toward a rear edge direction in a plan view. 請求項１〜３のいずれかに記載の縦長ブレードを備えたことを特徴とする縦軸ロータ。   A vertical axis rotor characterized by comprising the vertically elongated blade according to any one of claims 1 to 3.
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JP2017197625A JP6997580B2 (en) 2017-10-11 2017-10-11 Vertical blade and vertical axis rotor
PCT/JP2018/037805 WO2019074020A1 (en) 2017-10-11 2018-10-10 Long blade and vertical-axis rotor

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JP2017197625A JP6997580B2 (en) 2017-10-11 2017-10-11 Vertical blade and vertical axis rotor

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JP2011169292A (en) * 2010-02-22 2011-09-01 Global Energy Co Ltd Vertical axis wind turbine with long blade
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JP2012132335A (en) * 2010-12-20 2012-07-12 Bellsion:Kk Fluid rotary wheel
CN102748207A (en) * 2012-08-13 2012-10-24 赵立华 blades and impeller of vertical-shaft wind power generator
JP2014507605A (en) * 2011-03-11 2014-03-27 シェブロン ユー．エス．エー． インコーポレイテッド System, method, and assembly for supplying power to offshore facilities
JP2016205204A (en) * 2015-04-21 2016-12-08 中島　紳一郎 Wind turbine blade

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JP2004084590A (en) * 2002-08-28 2004-03-18 Mitsubishi Heavy Ind Ltd Wind mill with winglet
JP2010096074A (en) * 2008-10-16 2010-04-30 Global Energy Co Ltd Blade of wind mill and method for manufacturing the same
JP2011169267A (en) * 2010-02-19 2011-09-01 Global Energy Co Ltd Vertical axis wind turbine
JP2011169292A (en) * 2010-02-22 2011-09-01 Global Energy Co Ltd Vertical axis wind turbine with long blade
JP2012132335A (en) * 2010-12-20 2012-07-12 Bellsion:Kk Fluid rotary wheel
JP2014507605A (en) * 2011-03-11 2014-03-27 シェブロン ユー．エス．エー． インコーポレイテッド System, method, and assembly for supplying power to offshore facilities
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