JP2003239847A - Wind mill blade for power generation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind mill blade for power generation of a new structure in which lightweight and high strength is secured, and power is efficiently generated by greatly reducing air resistance. <P>SOLUTION: An inner circumference side vertical blade component member 32 is suspended on a respective tip end of a plurality of horizontal blades 4 of a Darrieus type wind mill. An outer circumference side vertical blade part 31 is attached and is integrated so as to straddle an entire outer side of the inner circumference side vertical blade component members 32a, 32b of the horizontal blades 4, 4 adjacent on a same plane in upper and lower directions. A vertical blade part 3 of a predetermined length in a predetermined thickness is integrally formed on an end part of each of the horizontal blades 4. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の目的】この発明は、自然に発生する風力を有用
なエネルギー源として取り出し、そのまま動力として利
用したり、あるいは発電を行うことを可能とする風車翼
に関するものであって、特に、軽量でありながら高強度
を確保でき、しかも空気抵抗を大幅に低減して効率的な
発電を可能とする新規な構造からなる発電用風車翼を提
供しようとするものである。SUMMARY OF THE INVENTION The present invention relates to a wind turbine blade capable of taking out naturally occurring wind power as a useful energy source and using it as power as it is, or for generating power, and in particular, it is lightweight. The present invention intends to provide a wind turbine blade for power generation, which has a new structure that can secure high strength, yet significantly reduces air resistance and enables efficient power generation.

【０００２】[0002]

【従来の技術】先進工業国における化石エネルギーの大
量消費によって地球大気中の二酸化炭素濃度が、もはや
無視できないほど高いレベルに達してしまい、このこと
に起因すると考えられる異常気象が各地で多発し、自然
災害によって多くの人命や家屋が奪われ、農作物に多大
な被害を被るようになり、二酸化炭素の排出量削減によ
る地球温暖化の防止が真剣に論議され、我が国で開催さ
れて採択された京都議定書では、世界各国が、共に二酸
化炭素削減の目標値を具体的に定めて実行に移すことを
確約する等、自然環境の回復を盛んに試みる努力が払わ
れるようになってきている。2. Description of the Related Art Due to the large consumption of fossil energy in industrialized countries, the carbon dioxide concentration in the earth's atmosphere has reached a level that can no longer be ignored, and abnormal weather thought to be caused by this frequently occurs in various places. Many people's lives and homes were lost due to natural disasters, and agricultural crops suffered a great deal of damage, and the prevention of global warming by reducing carbon dioxide emissions was seriously discussed, and Kyoto was held and adopted in Japan. Under the Protocol, efforts are being made by countries all over the world to actively try to restore the natural environment, such as committing to concretely set a target value for carbon dioxide reduction and putting it into action.

【０００３】現代社会で欠くことができない電力資源に
ついても、こうした見地から、二酸化炭素を発生させな
い発電技術として原子力発電が広く利用されているが、
次の世代に放射性廃棄物を残すことや、チェルノブイリ
原発事故や女川原発近くでの放射能被爆事故等を契機
に、原子力に対する潜在的危機感を益々募らせているこ
と等といった問題があり、原子力発電に頼る電力の供給
策を見直したり、中止してしまおうというのが世界的傾
向となっており、発展途上の国々も、近い将来に先進国
並の電力需要に達するものと想定したときに、地球上に
おける電力資源を、上述の問題を抱えた化石エネルギー
や原子力エネルギーで賄うことは殆ど不可能としなけれ
ばならず、それらに代わって汚染の無い自然エネルギー
利用による発電技術が不可欠となり、各方面で風力発
電、太陽エネルギー発電、バイオマスガス化発電等の技
術開発が精力的に進められ始めている。With respect to electric power resources that are indispensable in modern society, nuclear power generation is widely used as a power generation technology that does not generate carbon dioxide from this viewpoint.
There are problems such as leaving radioactive waste to the next generation, and increasing the potential sense of crisis for nuclear power, triggered by the accident at the Chernobyl nuclear power plant and the radiation exposure accident near the Onagawa nuclear power plant. There is a global tendency to review or stop the supply of electricity that depends on power generation, and when developing countries assume that they will reach the same level of electricity demand as developed countries in the near future. , It is almost impossible to cover the electricity resources on the earth with fossil energy and nuclear energy, which have the above-mentioned problems, and instead of them, a power generation technology using natural energy without pollution becomes indispensable. In the field, technological development of wind power generation, solar energy power generation, biomass gasification power generation, etc. has begun to proceed vigorously.

【０００４】風力発電は、地形や季節風等の自然条件を
考慮して風が良く吹く場所を選択し、プロペラ型、オラ
ンダ型、多翼型、セルウィング型、パドル型、サボニウ
ス型、クロスフロー型、ジャイロミル型、ダリウス型
等、様々な種類の回転翼型の中から、その地の風況や設
置面積、投資額等の条件によって決定される発電規模に
応じた風車翼を適宜選択、設置するのが望ましく、例え
ば、１．５ｍ四方程度の比較的狭いスペースで０・５Ｋ
ｗ程度の発電を行うようにする比較的小型な風車として
好適なものに、図６のダリウス型風車の正面図に示され
たダリウス型の風車翼１を挙げることができる。In wind power generation, propeller type, Dutch type, multi-blade type, cell wing type, paddle type, savonius type, cross flow type is selected by selecting a place where the wind blows well in consideration of natural conditions such as topography and seasonal winds. , Gyro mill type, Darrieus type, etc., various types of rotor blades are selected and installed as appropriate according to the power generation scale that is determined by the conditions of the local wind conditions, installation area, investment amount, etc. Is desirable, for example 0.5K in a relatively narrow space of about 1.5m square
One suitable as a relatively small wind turbine for generating electric power of about w is the Darrieus-type wind turbine blade 1 shown in the front view of the Darrieus-type wind turbine in FIG.

【０００５】この図中に示したダリウス型の発電用風車
翼１は、一般的に、回転自在に立設された鉛直軸部２の
上下中途部の所定寸法を隔てた部分から上下一対をなす
複数本の水平翼４，４，……を遠心状に突設し、これら
上下一対の水平翼４，４の先端部間の夫々に掛け渡すよ
うに一枚板状の垂直翼３を装着したものであって、水平
翼４と垂直翼３との接合部分には、Ｌ型状の連結金具
７，７を用いたボルト・ナット５１，５１，……の締め
付け構造を用いるのが普通であり、突風や砂塵等の衝突
にも耐える耐久強度を確保するように製造されて、水平
軸風車のような風向きに応じて風車の向きを変える必要
が無く、発電機を地上側に設置できることから小型、軽
量化し易いという特徴を有している。The Darrieus-type wind turbine blade for power generation 1 shown in this figure generally forms a pair of upper and lower parts of a vertical shaft portion 2 which is rotatably erected, and which is separated by a predetermined dimension in the upper and lower midway portions. A plurality of horizontal blades 4, 4, ... Are projected in a centrifugal manner, and a single plate-shaped vertical blade 3 is attached so as to be bridged between the tips of the pair of upper and lower horizontal blades 4,4. It is usual to use a tightening structure of bolts / nuts 51, 51, ... Using L-shaped connecting fittings 7, 7 at the joint between the horizontal blade 4 and the vertical blade 3. Manufactured to ensure durability against collisions such as gusts and dust, it is not necessary to change the direction of the wind turbine according to the wind direction like a horizontal axis wind turbine, and the generator can be installed on the ground side, so it is small. The feature is that it is easy to reduce the weight.

【０００６】しかし、このダリウス型風車発電は、自己
起動性をもたず補助的な始動装置を必須とするため、効
率的作動を得るには、複数枚の垂直翼３，３とこれを鉛
直軸部２に連結する水平翼４，４，４，……の夫々の翼
形断面形状とを、できる限り精密に製作することが肝要
とされていて、連結金具７，７やボルト・ナット５１，
５１，……の突起物は、翼表面を流れる風の整流を妨げ
て空気抵抗を増し、かなりの強風域に達しないと起動で
きず、その結果、年間を通じた発電量を大幅に減少させ
てしまうことになり、しかも、強風時には、風車翼１の
高速回転に伴い、これらの突起形状部分が風を切って大
きな唸り音を発して騒音公害にも繋がり兼ねない等とい
った実用化上の困難な課題を抱えていて、他のタイプの
風車にはない利点を有していながら、活用の範囲を狭め
てしまっていた。However, since this Darrieus-type wind turbine power generation does not have self-starting property and requires an auxiliary starting device, in order to obtain efficient operation, a plurality of vertical blades 3 and 3 and the vertical blades 3 and 3 are installed vertically. It is essential to manufacture the horizontal blades 4, 4, 4, ... Connected to the shaft portion 2 and the respective airfoil cross-sectional shapes as accurately as possible. ，
The projections of 51, ... impede the rectification of the wind flowing on the blade surface and increase the air resistance, so that it cannot be activated unless it reaches a fairly strong wind range, and as a result, the amount of power generation throughout the year is greatly reduced. Moreover, when the wind is strong, the high-speed rotation of the wind turbine blades 1 cuts off the wind and makes a loud roaring noise, which may lead to noise pollution. It had challenges and had the advantage that other types of wind turbines did not have, but narrowed the range of utilization.

【０００７】この発明は、以上のような実情に鑑み、軽
量でありながら充分な強度が確保できると共に、微風で
あっても容易に起動し、高速回転時にも静粛に回転可能
とするダリウス型風車における風車翼の実現化はできな
いものかとの判断から、逸速くその開発、研究に着手
し、長期に渡る試行錯誤と幾多の試作、実験とを繰り返
してきた結果、今回、遂に新規な構造の発電用風車翼を
実現化することに成功したものであり、以下では、図面
に示すこの発明を代表する実施例と共に、その構成を詳
述することとする。In view of the above circumstances, the present invention is a Darrieus-type wind turbine that is light in weight, yet secures sufficient strength, can be easily started even in a light wind, and can be quietly rotated even at high speed rotation. After deciding that it would be impossible to realize a wind turbine blade in Japan, we rapidly began to develop and research it, and after repeated trial and error over a long period of time and many trials and experiments, this time, finally, a new structure of power generation The present invention has succeeded in realizing a wind turbine blade, and the configuration thereof will be described in detail below along with an embodiment representative of the present invention shown in the drawings.

【０００８】[0008]

【発明の構成】図面に示すこの発明を代表する実施例か
らも明確に理解されるように、この発明の発電用風車翼
は、基本的に次のような構成から成り立っている。即
ち、ダリウス型風車における複数の水平翼が、夫々の先
端に内周側垂直翼構成部材を直交状となる上下方向また
は上下何れかの方向に所定長分だけ延伸、一体形成し、
平面配置上で同一となる上下に隣接するそれら内周側垂
直翼構成部材の外側全体または複数個に跨らせて外周側
垂直翼部を添設、一体化し、各水平翼の端部に所定の肉
厚で所定長さの垂直翼部を一体的に形成した構成を要旨
とする発電用風車翼である。As clearly understood from the embodiments of the present invention shown in the drawings, the wind turbine blade for power generation of the present invention basically has the following structure. That is, a plurality of horizontal blades in the Darrieus-type wind turbine, the inner peripheral side vertical blade constituent members at the respective tips are extended or formed integrally by a predetermined length in either the vertical direction or the vertical direction in which they are orthogonal,
The outer peripheral vertical blades are attached and integrated so as to extend over the entire outside or a plurality of the inner peripheral vertical blade constituent members that are vertically adjacent to each other in the same plane arrangement, and predetermined at the end of each horizontal blade. Is a wind turbine blade for power generation, which has a structure in which vertical blade portions having a predetermined thickness and a predetermined thickness are integrally formed.

【０００９】この基本的な構成からなる発電用風車翼
を、より具体的な構成のものとして示すと、鉛直軸部か
ら所定半径とした同一円周上に、互いに等間隔を隔てて
配置される複数枚の垂直翼と、当該鉛直軸部の上下適所
から略水平方向に延伸し、その先端を各垂直翼の翼厚方
向内側となる内周側垂直翼部に達しさせて実質的に各垂
直翼を鉛直軸部に連結させるようにする複数枚の水平翼
とからなるダリウス型風車における各水平翼が、夫々の
先端に予め対応する垂直翼の翼厚方向内側となる内周側
垂直翼部の一部に相当する内周側垂直翼構成部材を直交
状上下方向あるいは上下方向何れかに所定長分だけ延
伸、一体化してなる略Ｌ字型あるいは横転Ｔ字型形状の
ものに形成され、それら水平翼の複数個毎を一組とし、
それらが鉛直軸部外周の平面配置上で同一となる上下に
隣接、配置され、各内周側垂直翼構成部材相互が上下に
当接状配置となるようにした上、それら当接状の各内周
側垂直翼構成部材外側全体に跨るように、垂直翼の翼厚
方向外側とする一枚板状の外周側垂直翼部を添設、一体
化して所定の肉厚で所定長さの垂直翼部が、各水平翼の
先端に一体、形成されてなるものとした発電用風車翼と
なる。The power generation wind turbine blade having this basic structure is shown as a more specific structure. The power generation wind turbine blades are arranged at equal intervals on the same circumference with a predetermined radius from the vertical shaft portion. A plurality of vertical blades, extending substantially horizontally from above and below the vertical shaft portion in a substantially horizontal direction, and having their tips reach the inner peripheral side vertical blade portions that are on the inner side in the blade thickness direction of each vertical blade and are substantially vertical. Each horizontal blade in a Darrieus-type wind turbine consisting of a plurality of horizontal blades for connecting the blades to the vertical shaft portion is an inner-peripheral-side vertical blade portion that is inside in the blade thickness direction of the vertical blades that correspond in advance to the respective tips. Is formed in a substantially L-shape or a T-shape in which the inner-circumferential-side vertical blade constituent member corresponding to a part of the above is stretched and integrated in a vertical direction in the vertical direction or in the vertical direction by a predetermined length. One set for each of these horizontal wings,
They are arranged vertically adjacent to each other in the same plane arrangement on the outer periphery of the vertical shaft portion, and are arranged such that the inner peripheral side vertical blade constituent members are arranged in contact with each other in the vertical direction. A single plate-shaped outer-peripheral-side vertical wing portion, which is the outer side in the blade thickness direction of the vertical blade, is attached so as to extend over the entire outside of the inner-peripheral-side vertical blade constituent member, and is integrated into a vertical body of a predetermined thickness and a predetermined length The blade portion serves as a wind turbine blade for power generation, which is integrally formed at the tip of each horizontal blade.

【００１０】また、より一層具体的な構成のものとして
示すと、鉛直軸部から所定半径とした同一円周上に、互
いに等間隔を隔てて配置される複数枚の垂直翼と、当該
鉛直軸部の上下適所から略水平方向に延伸し、その先端
を各垂直翼の翼厚方向内側となる内周側垂直翼部に達し
させて実質的に各垂直翼を鉛直軸部に連結させるように
する複数枚の水平翼とからなるダリウス型風車における
各水平翼が、上面側水平翼部材と下面側水平翼部材とに
分割形成されると共に、夫々の先端に予め対応する垂直
翼の翼厚方向内側となる内周側垂直翼部の一部に相当す
る内周側垂直翼構成部材を直交状上下方向何れかに所定
長分だけ延伸、一体化して略Ｌ字型上面側水平翼部材お
よび略転倒Ｌ字型下面側水平翼部材に形成され、それら
上面側水平翼部材と下面側水平翼部材とを一対とする水
平翼の複数個毎を一組とし、それらが鉛直軸部外周の平
面配置上で同一となる上下に隣接、配置され、各内周側
垂直翼構成部材相互が上下に当接状配置となるようにし
た上、それら当接状の各内周側垂直翼構成部材外側全体
に跨るように、垂直翼の翼厚方向外側とする一枚板状の
外周側垂直翼部を添設、一体化して所定の肉厚で所定長
さの垂直翼部が、各水平翼の先端に一体、形成されてな
る発電用風車翼であるということができる。Further, as a more specific configuration, a plurality of vertical blades arranged at equal intervals from each other on the same circumference having a predetermined radius from the vertical shaft portion, and the vertical shaft. So as to extend substantially horizontally from the upper and lower appropriate parts of the section and reach the tip of the inner peripheral side vertical blade portion which is the inner side in the blade thickness direction of each vertical blade so that each vertical blade is substantially connected to the vertical shaft portion. Each horizontal blade in a Darrieus-type wind turbine composed of a plurality of horizontal blades is divided into an upper surface side horizontal blade member and a lower surface side horizontal blade member, and the vertical blade thickness direction corresponding to each tip in advance. An inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion is extended and integrated in a perpendicular vertical direction by a predetermined length and is integrated to form a substantially L-shaped upper surface side horizontal blade member and a substantially L-shaped upper surface side horizontal blade member. Falling L-shaped lower surface side horizontal wing members, and those upper surface side horizontal wing members A plurality of horizontal blades each having a pair of lower surface side horizontal blade members are set as a set, and they are vertically adjacent to each other in the same plane arrangement on the outer periphery of the vertical shaft portion, and each inner peripheral side vertical blade component member. The upper and lower parts are arranged in contact with each other in the vertical direction, and the outer periphery of a single plate is formed on the outer side in the blade thickness direction of the vertical blade so as to extend over the entire outer side of the inner peripheral side vertical blade constituent members of the contact shape. It can be said that a wind turbine blade for power generation is formed by additionally forming the side vertical blades and integrally forming the vertical blades having a predetermined thickness and a predetermined length at the tips of the horizontal blades.

【００１１】そして、さらに具体的には、鉛直軸部から
所定半径とした同一円周上に、互いに等間隔を隔てて配
置される複数枚の垂直翼と、当該鉛直軸部の上下適所か
ら略水平方向に延伸し、その先端を各垂直翼の翼厚方向
内側となる内周側垂直翼部に達しさせて実質的に各垂直
翼を鉛直軸部に連結させるようにする複数枚の水平翼と
からなるダリウス型風車における各水平翼が、上面側水
平翼部材と下面側水平翼部材とに分割形成されると共
に、夫々の先端に、予め、対応する垂直翼の翼厚方向内
側となる内周側垂直翼部の一部に相当する内周側垂直翼
構成部材を直交状上下方向何れかに所定長分だけ延伸、
一体化し、何れもＦＲＰ製中空翼構造とした略Ｌ字型上
面側水平翼部材および略転倒Ｌ字型下面側水平翼部材に
形成され、それら上面側水平翼部材と下面側水平翼部材
とを一対として接着剤および／またはボルト・ナットに
よって一体化して所定肉厚としてなる水平翼の複数個毎
を一組とし、それらが鉛直軸部外周の平面配置上で同一
となる上下に隣接、配置され、各内周側垂直翼構成部材
相互が上下に当接状配置となるようにした上、それら当
接状の各内周側垂直翼構成部材外側全体に跨るように、
垂直翼の翼厚方向外側とする一枚板状でＦＲＰ製中空翼
構造とした外周側垂直翼部を接着剤および／またはボル
ト・ナットを用いて添設、一体化して所定の肉厚で所定
長さの垂直翼部が、各水平翼の先端に一体形成されてな
る発電用風車翼となる。More specifically, a plurality of vertical blades arranged at equal intervals from each other on the same circumference having a predetermined radius from the vertical shaft portion, and the vertical blade portions substantially above and below the vertical blade portion. A plurality of horizontal blades that extend in the horizontal direction and reach the inner vertical blades on the inner side in the blade thickness direction of each vertical blade to substantially connect each vertical blade to the vertical shaft portion. Each of the horizontal blades in the Darrieus-type wind turbine consisting of and is divided into an upper surface side horizontal blade member and a lower surface side horizontal blade member, and the inner ends of the respective horizontal blades in advance in the blade thickness direction inside of the corresponding vertical blades. The inner peripheral side vertical blade constituent member corresponding to a part of the peripheral side vertical blade portion is extended in a vertical direction in a perpendicular direction by a predetermined length,
They are integrally formed into a substantially L-shaped upper surface side horizontal blade member and a substantially inverted L-shaped lower surface side horizontal blade member which are FRP hollow blade structures, and the upper surface side horizontal blade member and the lower surface side horizontal blade member are formed. A set of a plurality of horizontal blades, each of which has a predetermined thickness and is integrally formed by a pair of adhesives and / or bolts and nuts, is set as a set, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion. , The inner peripheral side vertical blade constituent members are arranged to be in contact with each other in the vertical direction, and the inner peripheral side vertical blade constituent members are in contact with each other.
A single plate-shaped FRP hollow blade structure, which is on the outer side in the thickness direction of the vertical blade, is attached to the outer peripheral vertical blade portion using an adhesive and / or bolts / nuts, and integrated to have a predetermined wall thickness. A vertical blade portion having a length serves as a wind turbine blade for power generation, which is integrally formed at the tip of each horizontal blade.

【００１２】上記のとおりの構成を要旨とするこの発明
の発電用風車翼を、より望ましい構成のものとして示せ
ば、鉛直軸部から所定半径とした同一円周上に、互いに
等間隔を隔てて配置される複数枚の垂直翼と、当該鉛直
軸部の上下適所から略水平方向に延伸し、その先端を各
垂直翼の翼厚方向内側となる内周側垂直翼部に達しさせ
て実質的に各垂直翼を鉛直軸部に連結させるようにする
複数枚の水平翼とからなるダリウス型風車における各水
平翼が、上面側水平翼部材と下面側水平翼部材とに分割
形成されると共に、夫々の先端に、予め、対応する垂直
翼の翼厚方向内側となる内周側垂直翼部の一部に相当す
る内周側垂直翼構成部材を直交状上下方向何れかに所定
長分だけ延伸、一体化し、何れもＦＲＰ製中空翼構造と
した略Ｌ字型上面側水平翼部材および略転倒Ｌ字型下面
側水平翼部材に形成され、それら上面側水平翼部材と下
面側水平翼部材とを一対として接着剤で接合した上、最
も肉厚となる部分の翼長方向所定間隔置きに穿孔してあ
る上面側水平翼部材および下面側水平翼部材双方の座ぐ
り孔にボルト・ナットを装着、締付けてからＦＲＰ樹脂
を充填、平滑仕上げして補強、一体化してなる所定肉厚
の水平翼の複数個毎を一組とし、それらが鉛直軸部外周
の平面配置上で同一となる上下に隣接、配置され、各内
周側垂直翼構成部材相互が上下に当接状配置となるよう
にした上、それら当接状の各内周側垂直翼構成部材外側
全体に跨るように、垂直翼の翼厚方向外側とする一枚板
状でＦＲＰ製中空翼構造とした外周側垂直翼部を添設、
接着剤で接合し、前記した各水平翼先端に連続となる垂
直翼にすると共に、該垂直翼の最も肉厚となる部分の翼
長方向所定間隔置きに穿孔してある内周側垂直翼構成部
材および外周側垂直翼部双方の座ぐり孔にボルト・ナッ
トを装着、締付けてからＦＲＰ樹脂を充填、平滑仕上げ
して補強、一体化し、所定の肉厚で所定長さの垂直翼部
が、各水平翼の先端に一体形成されるようにした構成か
らなる発電用風車翼となる。If the wind turbine blade for power generation of the present invention having the above-mentioned configuration as a gist is shown as a more desirable configuration, it is equally spaced from each other on the same circumference having a predetermined radius from the vertical shaft portion. A plurality of vertical blades to be arranged, and extending substantially horizontally from the upper and lower proper positions of the vertical shaft portion, and the tip thereof reaches the inner peripheral side vertical blade portion that is on the inner side in the blade thickness direction of each vertical blade. Each horizontal blade in the Darrieus-type wind turbine consisting of a plurality of horizontal blades for connecting each vertical blade to the vertical shaft portion, is divided into an upper surface side horizontal blade member and a lower surface side horizontal blade member, and An inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion, which is on the inner side in the blade thickness direction of the corresponding vertical blade, is stretched in advance in a perpendicular direction by a predetermined length in either of the orthogonal vertical directions. , L-shaped upper surface integrated with FRP hollow blade structure The horizontal wing member and the substantially inverted L-shaped lower surface side horizontal wing member are joined to each other with the upper surface side horizontal wing member and the lower surface side horizontal wing member as a pair, and the wing length of the thickest part Bolts and nuts are installed and tightened in the counterbore holes of both the upper and lower horizontal blades that are perforated at predetermined intervals in the direction. After tightening, FRP resin is filled, smoothed, reinforced and integrated. A set of horizontal blades with a predetermined thickness is set as one set, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer periphery of the vertical shaft portion, and the inner peripheral side vertical blade constituent members abut on each other vertically. FRP hollow wing structure with a single plate shape that is the outer side in the blade thickness direction of the vertical blade so as to extend over the entire outside of the inner peripheral side vertical blade constituent members in contact with each other. Peripheral side vertical wings are attached,
An inner peripheral vertical blade configuration in which the blades are joined with an adhesive to form vertical blades that are continuous with the tips of the horizontal blades, and the thickest portions of the vertical blades are perforated at predetermined intervals in the blade length direction. Bolts and nuts are attached to the counterbore holes of both the member and the outer peripheral side vertical wing, tightened, filled with FRP resin, smoothed and reinforced, integrated, and the vertical wing with a predetermined wall thickness and a predetermined length is The wind turbine blade for power generation has a configuration in which it is integrally formed at the tip of each horizontal blade.

【００１３】さらに、他の望ましい構成のものとして、
鉛直軸部から所定半径とした同一円周上に、互いに等間
隔を隔てて配置される複数枚の垂直翼と、当該鉛直軸部
の上下適所から略水平方向に延伸し、その先端を各垂直
翼の翼厚方向内側となる内周側垂直翼部に達しさせて実
質的に各垂直翼を鉛直軸部に連結させるようにする複数
枚の水平翼とからなるダリウス型風車における各水平翼
が、翼基端側に鉛直軸部取着用の扇型フランジを有する
上面側水平翼部材と、同様の扇型フランジを有する下面
側水平翼部材とに分割形成されると共に、夫々の先端に
予め対応する垂直翼の翼厚方向内側となる内周側垂直翼
部の一部に相当する内周側垂直翼構成部材を直交状上下
方向何れかに所定長分だけ延伸、一体化し、何れもＦＲ
Ｐ製中空翼構造とした略Ｌ字型上面側水平翼部材および
略転倒Ｌ字型下面側水平翼部材に形成され、それら上面
側水平翼部材と下面側水平翼部材とを一対としておよび
／またはボルト・ナットによって一体化して所定肉厚と
してなる水平翼の複数個毎を一組とし、それらが鉛直軸
部外周の平面配置上で同一となる上下に隣接、配置さ
れ、各翼基端側は、夫々上下に対をなす扇型フランジで
鉛直軸部に連結されると共に、各翼先端側は、各内周側
垂直翼構成部材相互が上下に当接状配置となるようにし
た上、それら当接状の各内周側垂直翼構成部材外側全体
に跨るように、垂直翼の翼厚方向外側とする一枚板状で
ＦＲＰ製中空翼構造とした外周側垂直翼部を接着剤およ
び／またはボルト・ナットを用いて添設、一体化して所
定の肉厚で所定長さの垂直翼部が、各水平翼の先端に一
体形成されるようにした構成の発電用風車翼が包含され
ている。Further, as another desirable configuration,
A plurality of vertical blades arranged at equal intervals from each other on the same circumference with a predetermined radius from the vertical shaft portion, and extending substantially horizontally from the upper and lower appropriate places of the vertical shaft portion, and the tip ends of each vertical blade. Each horizontal blade in a Darrieus-type wind turbine is composed of a plurality of horizontal blades that reach the inner peripheral side vertical blades that are inside in the blade thickness direction and substantially connect each vertical blade to the vertical shaft. , Is divided into an upper surface side horizontal blade member having a fan-shaped flange for attaching a vertical shaft portion on the blade base end side and a lower surface side horizontal blade member having a similar fan-shaped flange, and corresponds to each tip in advance. The inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion on the inner side in the blade thickness direction of the vertical blade is stretched and integrated by a predetermined length in any of the orthogonal vertical directions, and both are FR.
A substantially L-shaped upper surface side horizontal wing member and a substantially L-shaped lower surface side horizontal wing member having a hollow wing structure made of P. The upper surface side horizontal wing member and the lower surface side horizontal wing member are paired and / or A set of a plurality of horizontal blades that are integrated by bolts and nuts and have a predetermined thickness is set as a set, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion. , Each of which is connected to the vertical shaft portion by a pair of upper and lower fan-shaped flanges, and the inner peripheral side vertical blade constituent members are vertically arranged in contact with each other at the blade tip side. An outer peripheral vertical blade portion having a single-plate FRP hollow blade structure that is on the outer side in the blade thickness direction of the vertical blade so as to straddle the entire outer side of each abutting inner peripheral side vertical blade component is an adhesive and / Alternatively, it is attached by using bolts and nuts and integrated to have a predetermined wall thickness and a predetermined length. Vertical wings, the power generating wind turbine blades is the inclusion of structure which is to be integrally formed at the tip of each horizontal blade.

【００１４】鉛直軸部は、複数の垂直翼とこれらを支持
する水平翼とからなる風車翼を鉛直状の軸心回りに回転
自在に支持した上、風車翼の回転動を発電機に伝導する
機能を果たすものであり、鉛直状且つ固定的に立設され
た固定軸に回転自在に装着された筒状体に形成され、そ
の外周適所に複数の水平翼の基部を一体に結合、支持し
て該固定軸回りに回転する構造のものとしたり、鉛直状
に固定された円筒型の軸受け部に、下端側を回転自在に
装着して立設された鉛直棒状体に形成し、同鉛直棒状体
の外周適所に複数の水平翼基部を結合、支持させて風車
翼を回転自在に支持する構造のもの、あるいは鉛直棒状
体を固定的に立設させて、軸受け内輪を該鉛直棒状体に
固定的に嵌着し、同軸受け外輪に水平翼の基部を装着し
て、回転自在に支持したもの等とすることが可能であ
り、軸受け部が外部に露出する構造の場合には、雨水や
塵埃の浸入を防止する防水カバーやシール構造等を設け
るのが望ましく、上端から下端の何れか適所に発電用の
出力ギア、出力ベルト用のプーリ、あるいは出力チェー
ン用のスプロケット等を設けたものとして、風車翼によ
って発生された回転力を外部へ出力できる構造とするこ
とができる。The vertical shaft portion rotatably supports a wind turbine blade composed of a plurality of vertical blades and horizontal blades supporting the vertical blades, and transmits the rotational motion of the wind turbine blades to a generator. It functions and is formed into a cylindrical body that is rotatably mounted on a fixed shaft that is vertically and fixedly erected, and integrally supports and supports the bases of a plurality of horizontal blades at appropriate positions on the outer periphery thereof. To rotate around the fixed axis, or to form a vertical rod-shaped body in which the lower end side is rotatably mounted on a vertically fixed cylindrical bearing part, A structure in which a plurality of horizontal blade bases are connected and supported at appropriate places on the outer circumference of the body to rotatably support the wind turbine blades, or a vertical rod-shaped body is fixedly erected and the bearing inner ring is fixed to the vertical rod-shaped body. And then attach the base of the horizontal wing to the outer ring of the coaxial receiver to rotatably support it. If the bearing is exposed to the outside, it is desirable to provide a waterproof cover or seal structure to prevent the ingress of rainwater and dust, and either the upper end or the lower end. An output gear for power generation, a pulley for an output belt, a sprocket for an output chain, or the like may be provided in a proper place to have a structure capable of outputting the rotational force generated by the wind turbine blade to the outside.

【００１５】垂直翼は、夫々が同一円周上にあって、上
記水平翼によって所定角度に固定された所定の翼状水平
断面を有することにより、所定風速以上の自然風を受け
ると、その自然の風力の強さに応じた鉛直軸部回り所定
方向への回転推力に変換させるようにする機能を果たす
ものであり、全ての翼状水平断面の向きが鉛直軸部回り
の同一箇所で一定方向となるよう揃えられたものとしな
ければならず、翼厚部断面形状を翼型形状とした鉛直板
状であって肉厚中心から対称または非対称形状となる翼
型とし、上端から下端まで略同一の翼断面形状とするの
が望ましく、ＮＡＣＡ（Ｎａｔｉｏｎａｌ Ａｄｖｉｓ
ｏｒｙ Ｃｏｍｍｉｔｔｅｅ ｆｏｒＡｅｒｏｎａｕｔ
ｉｃｓ）またはＮＲＥＬ（Ｎａｔｉｏｎａｌ Ｒｅｎｅ
ｗａｂｌｅ Ｅｎｅｒｇｙ Ｌａｂｏｒａｔｏｒｙ）に
よる翼形やオランダ・デルフト工科大学風力エネルギー
研究所の開発による翼形、あるいは航空機やヘリコプタ
ブレードを模写した翼形等、既に開発されている翼形を
適宜選択して採用することが可能である。Each of the vertical blades is on the same circumference and has a predetermined wing-shaped horizontal cross section which is fixed at a predetermined angle by the horizontal blades. It has the function of converting into rotational thrust in a predetermined direction around the vertical shaft part according to the strength of the wind force, and the orientation of all wing-shaped horizontal sections is constant at the same location around the vertical shaft part. The blades have a vertical plate shape with a blade-shaped cross-section of the blade thickness section that is symmetrical or asymmetrical from the center of the wall thickness, and has almost the same blade from the upper end to the lower end. A cross-sectional shape is desirable, and NACA (National Advis
ory Committee for Aeronaut
ics) or NREL (National Rene)
Appropriately selecting and adopting an already developed airfoil, such as an airfoil with a wavy energy laboratory) or an airfoil developed by the Institute of Wind Energy, Delft University of Technology in the Netherlands, or an airfoil imitating an aircraft or helicopter blade. Is possible.

【００１６】そして、この垂直翼は、スプールス、えぞ
まつ、ほう、ひのき等の木材から削り出し、樹脂コーテ
ィングを施して防水性を確保したものや、アルミ合金、
ステンレス、チタン合金等の耐食性に秀れた金属を冷間
鍛造やダイカスト、または圧延加工されたものをそのま
ま、あるいは適宜熔接する等して製造することが可能で
ある外、アクリル、ポリカーボネート、あるいはＧＦＲ
Ｐ（ガラス繊維強化樹脂），ＣＦＲＰ（カーボン繊維強
化樹脂），ＡＦＲＰ（アラミド繊維強化樹脂）、表現を
変えればＧＲＴＳ（ガラス繊維強化熱硬化性樹脂），Ｆ
ＲＴＳ（その他の繊維強化熱硬化性樹脂），ＧＲＴＰ
（ガラス繊維強化熱可塑性樹脂），ＦＲＴＰ（その他の
繊維強化熱可塑性樹脂）等のＦＲＰ（Ｆｉｂｅｒｇｌａ
ｓｓ Ｒｅｉｎｆｏｒｃｅｄ Ｐｌａｓｔｉｃｓ）単
独、あるいはＦＲＰにＦＲＣ（Ｆｉｂｅｒ−Ｒｅｉｎｆ
ｏｒｃｅｄ Ｃｏｍｐｏｓｉｔｅ）、ＴＦＴ（Ｔｒａｖ
ｅｒｓｅ Ｆｉｌａｍｅｎｔ Ｔａｐｅ）等の耐久性に
秀れた樹脂素材を組み合わせて適宜製造することが可能
であるものの、後述の水平翼、特にそれに予め一体形成
しなければならない上面側水平翼部材および下面側水平
翼部材形成上の都合や耐久性の観点からは、少なくとも
外皮部や外郭体をアルミ合金、チタン合金等の耐久・耐
食性に秀れた金属製のものや各種ＦＲＰ製のもの、ある
いはそれらに相当する素材からなるものとすべきであ
り、内部に発泡樹脂製あるいは軽金属製ハニカム構造の
コアを設けたり、外皮部や外郭体自体を薄肉で中空構造
のものとすることもできる。The vertical blades are machined from wood such as spools, ezomatsu, ho, and cypress, and are coated with resin to ensure waterproofness, aluminum alloy,
A metal such as stainless steel or titanium alloy having excellent corrosion resistance can be manufactured by cold forging, die casting, or rolling, as it is, or by appropriately welding, or acrylic, polycarbonate, or GFR.
P (glass fiber reinforced resin), CFRP (carbon fiber reinforced resin), AFRP (aramid fiber reinforced resin), GRTS (glass fiber reinforced thermosetting resin), F
RTS (other fiber reinforced thermosetting resin), GRTP
(Glass fiber reinforced thermoplastic resin), FRTP (other fiber reinforced thermoplastic resin), etc. FRP (Fibergla)
ss Reinforced Plastics alone or FRP (Fiber-Reinf)
orced Composite), TFT (Trav)
Although it can be appropriately manufactured by combining resin materials with excellent durability such as erse filament tape), the horizontal blades described below, especially the horizontal blades on the upper surface and the horizontal surfaces on the lower surface that must be integrally formed in advance with the horizontal blades. From the viewpoint of convenience and durability in forming the wing member, at least the outer skin and outer shell are made of metal such as aluminum alloy or titanium alloy, which has excellent durability and corrosion resistance, or various FRP, or equivalent. The core of the honeycomb structure made of foamed resin or light metal may be provided inside, or the outer skin portion or outer shell itself may have a thin and hollow structure.

【００１７】内周側垂直翼部は、上記垂直翼の鉛直軸部
側となる側面部分であって、後述する水平翼に予め一体
形成されることとなる内周側垂直翼構成部材に分割、形
成されたものとした上、後述の水平翼を組立て、一体化
する段階で当該水平翼先端側に内周側垂直翼部の一部と
なる部分が略直交状に一体化されてしまい、水平翼先端
に別体とした垂直翼の内側を取着、一体化するようにし
た構造による不都合を回避する機能を果たすものであ
り、水平翼と一体に形成された内周側垂直翼構成部材の
先端同士を当接状となるよう上下に隣接し、適宜手段で
上下に連続、一枚板状のものとすることによって形成さ
れるものであり、後述する水平翼との関係で、例えばア
ルミ合金、ステンレス、チタン合金等の各種金属製のも
のとする場合には、当該水平翼と共に冷間鍛造やダイカ
ストによって一体成形してしまうか、溶接によって水平
翼端に一体化してしまうかして形成されるようにし、ま
た、ＦＲＰ製のものによるとすれば、水平翼と一体成型
する外、接着剤を用いて一体化したものとすることもで
き、それらは、何れも水平翼との結合部分を曲面で連続
するよう成型したり、または角部周辺に補強板やＦＲＰ
素材を添設、積層したり、補強部リブ材を内部に埋設し
たりする等して角部から応力を分散させ得る構造のもの
とするのが望ましい。The inner peripheral side vertical blade portion is a side surface portion on the vertical shaft side of the vertical blade, and is divided into inner peripheral side vertical blade constituent members to be integrally formed with a horizontal blade to be described later, In addition to the formed horizontal blades, at the stage of assembling and integrating the horizontal blades, which will be described later, a part of the inner peripheral side vertical blades is integrated in a substantially orthogonal shape at the tip of the horizontal blades. It has a function of avoiding inconvenience due to a structure in which the inside of a separate vertical blade is attached to the blade tip and is integrated, and the inner peripheral side vertical blade constituent member formed integrally with the horizontal blade is formed. It is formed by vertically adjoining the tips so as to be in contact with each other, and continuously by an appropriate means to form a single plate, and in relation to the horizontal blade described later, for example, an aluminum alloy. , Stainless steel, titanium alloy, etc. The horizontal blade is integrally formed with the horizontal blade by cold forging or die casting, or is integrally formed with the horizontal blade end by welding. In addition to being integrally molded, it can also be integrated using an adhesive, and either of them is molded so that the connecting portion with the horizontal wing is continuous with a curved surface, or a reinforcing plate or FRP around the corner part.
It is desirable to have a structure in which the stress can be dispersed from the corners by, for example, attaching or laminating a material, or embedding a reinforcing rib material inside.

【００１８】なお、内周側垂直翼構成部材は、水平翼と
垂直翼との結合部分の翼型形状を確定してしまう機能も
果たすことになり、空気抵抗を増加させる不要な突出形
状を形成せずに水平翼と垂直翼とを連続状となして充分
な強度がえられるようにすべきであり、後述する水平翼
あるいはその一部をなす上面側水平翼部材および／また
は下面側水平翼部材の先端部に一体に設けられ、形成す
べき垂直翼の内周側垂直翼部の一部を分担し、組み立て
て内周側垂直翼部を形成したときに充分な強度が得られ
るよう、一体形成される後述の水平翼あるいはその一部
をなす上面側水平翼部材および／または下面側水平翼部
材と同一の素材のものとし、射出成形等によって双方を
同時成型したものとすべきであり、必要に応じて補強リ
ブ材や心材を内蔵したものとすることができる外、中空
構造として軽量化することも可能である。The inner peripheral vertical blade constituent members also have a function of determining the airfoil shape of the connecting portion of the horizontal blades and the vertical blades, thus forming an unnecessary protruding shape that increases air resistance. The horizontal blades and the vertical blades should be continuous so that sufficient strength can be obtained, and the horizontal blades described below or the upper horizontal blades and / or the lower horizontal blades forming a part of the horizontal blades. Provided integrally at the tip of the member, share a part of the inner peripheral side vertical blade of the vertical blade to be formed, so that sufficient strength can be obtained when assembled to form the inner peripheral side vertical blade. It should be made of the same material as the below-mentioned horizontal blades integrally formed, or the upper-side horizontal blade members and / or the lower-side horizontal blade members forming a part thereof, and both should be simultaneously molded by injection molding or the like. , Built-in reinforcing rib material and core material as needed Outside can be made with, it is possible to reduce the weight of a hollow structure.

【００１９】外周側垂直翼部は、垂直翼の外周側の側面
部分を形成するものであって、内周側垂直翼部と一体と
なって垂直翼の翼型形状を完成させると共に、垂直翼の
上下端間の複数箇所に連結された水平翼との一体構造を
強化する機能を果たすものであり、上下端に渡り一枚の
板状に形成されたものとするのが望ましいが、上下複数
枚に分割したものとすることも可能である外、上下の内
周側垂直翼部間の隙間や、内周側垂直翼部の上下端の外
側部分に、内周側垂直翼部を補う翼形形状部を一体的に
添設して翼形形状を整えるものとすることも可能であ
る。The outer peripheral side vertical blade portion forms a side surface portion on the outer peripheral side of the vertical blade, and completes the airfoil shape of the vertical blade together with the inner peripheral side vertical blade portion. It has the function of strengthening the integrated structure with the horizontal blades that are connected to multiple points between the upper and lower ends, and it is desirable that it is formed as a single plate across the upper and lower ends. It is also possible to divide it into one piece, and a blade that supplements the inner peripheral side vertical blade portion in the gap between the outer and upper and lower inner peripheral side vertical blade portions and the outer portion of the upper and lower ends of the inner peripheral side vertical blade portion. It is also possible to integrally attach the shaped portion to adjust the airfoil shape.

【００２０】水平翼は、前記した垂直翼を、鉛直軸部か
ら所定距離を隔てた所定高さ位置における同一円周上
に、全ての翼状水平断面の向きを鉛直軸部回りの一定方
向に揃えたものとして支持し、風力によって生み出され
る垂直翼の鉛直軸部回り所定方向への回転推力を安全、
確実に前出の鉛直軸部に伝達する機能を果たすものであ
り、折角の垂直翼回転推力が、自らの回転による空気抵
抗で減殺されてしまうことのないよう、その翼厚部断面
形状を翼型形状とした水平板状であって肉厚中心から対
称または非対称形状となる翼型とすべきであり、既述し
たＮＡＣＡ、ＮＲＥＬやオランダ・デルフト工科大学風
力エネルギー研究所の翼形、あるいは航空機やヘリコプ
タブレードを模写した翼形等を適宜選択して採用するこ
とが可能である。In the horizontal blade, the above-mentioned vertical blades are arranged such that all the blade-shaped horizontal cross sections are aligned in a fixed direction around the vertical shaft portion on the same circumference at a predetermined height position separated from the vertical shaft portion by a predetermined distance. Support as a vertical wind turbine, and the rotational thrust generated by the wind force around the vertical axis of the vertical blade in a predetermined direction is safe.
The blade has a function of reliably transmitting it to the vertical shaft section described above, and the cross-sectional shape of the blade is adjusted so that the vertical thrust of the vertical blade is not reduced by the air resistance caused by its own rotation. The profile should be a horizontal plate shape that is symmetrical or asymmetrical from the center of the wall thickness, and it should be the NACA, NREL, or the profile of the Delft University of Technology Wind Energy Research Institute in the Netherlands, or an aircraft. It is possible to appropriately select and adopt an airfoil or the like that replicates a helicopter blade.

【００２１】そして、この水平翼は、前記した垂直翼と
同様に軽量且つ硬質な木材類や軽金属類あるいはＦＲＰ
等の複合素材を使用して製造することが可能であるもの
の、前記垂直翼の内周側垂直翼構成部材との一体成形性
や耐久、耐蝕性等を考慮して、少なくとも外皮部や外郭
体をアルミ合金、チタン合金等の耐久・耐食性に秀れた
金属製のものや各種ＦＲＰ製のもの、あるいはそれらに
相当する素材からなるものとすべきであり、内部に内部
にポリウレタン、ポリスチレン、ポリエチレン、ポリプ
ロピレン、ＰＶＣ、シリコン等からなる発泡体や、アル
ミハニカム、アラミドハニカム等のハニカム材からなる
コアを設けたり、外皮部や外郭体自体を薄肉で中空構造
のものとすることができる。The horizontal blades are light and hard like the above-mentioned vertical blades and are made of wood or light metal or FRP.
Although it can be manufactured by using a composite material such as, the at least the outer skin portion or outer shell body in consideration of integral moldability with the inner peripheral side vertical blade constituent member of the vertical blade, durability, corrosion resistance, etc. Should be made of aluminum alloy, titanium alloy, or other metal with excellent durability and corrosion resistance, various FRP materials, or materials equivalent to them, with polyurethane, polystyrene, polyethylene inside. A foam made of polypropylene, PVC, silicon, or the like, a core made of a honeycomb material such as an aluminum honeycomb, an aramid honeycomb, or the like can be provided, or the outer skin portion or the outer shell itself can have a thin wall and a hollow structure.

【００２２】上面側水平翼部材は、上記水平翼の上側の
外皮部または外郭体を構成する部分であり、下面側水平
翼部材と一体化することによって当該水平翼の全体翼形
を完成する機能を果たすものであり、特に前記した垂直
翼の重量を支持した上、自らの水平姿勢を保つと共に垂
直翼の垂直姿勢を維持可能とするよう充分な引っ張り強
度を確保し得るようにしたものとしなければならず、重
量を軽減するために中空構造とするのが望ましく、下面
側水平翼部材との接合面は、その全面を接着面として確
保して強固な結合を可能とすべきであり、また、下面側
水平翼部材は、水平翼の下側の外皮部または外郭体を構
成する部分であり、上記上面側水平翼部材と結合して当
該水平翼を完成する機能を果たすものであって、垂直翼
の重量を支持し、自らの水平姿勢、および垂直翼の垂直
姿勢を支持できるよう充分な圧縮強度を確保し得るもの
としなければならず、強い引っ張り強度を要する上面側
水平翼部材とは異なる素材を選択することが可能であ
り、上面側水平翼部材との接合面をできるだけ広く確保
して、強固な結合を可能となるようにするのが望まし
い。The upper surface side horizontal wing member is a portion that constitutes the upper skin portion or outer shell of the horizontal blade, and functions to complete the entire airfoil of the horizontal blade by being integrated with the lower surface side horizontal blade member. In addition to supporting the weight of the vertical blades described above, it must be capable of maintaining its own horizontal attitude and ensuring sufficient tensile strength to maintain the vertical attitude of the vertical blades. In order to reduce the weight, it is desirable to have a hollow structure, and the joint surface with the lower surface side horizontal wing member should secure the entire surface as an adhesive surface to enable a strong bond, and The lower surface side horizontal wing member is a portion that constitutes the outer skin portion or outer shell of the lower side of the horizontal blade, and serves to complete the horizontal blade by combining with the upper surface side horizontal blade member. Supports the weight of the vertical wing, It is necessary to secure sufficient compressive strength so that it can support the horizontal postures of the above and the vertical postures of the vertical blades, and it is possible to select a material different from the upper horizontal blade member that requires strong tensile strength. Therefore, it is desirable to secure as wide a joint surface as possible with the upper surface side horizontal wing member so as to enable strong coupling.

【００２３】扇型フランジは、複数枚の水平翼の各基端
部を鉛直軸部の正確な取付け位置に強固に装着する機能
を果たすものであり、鉛直軸部回り水平面上の３６０゜
を装着する垂直翼の枚数で等分した開き角度を成す扇型
に形成されたものとすべきであり、鉛直方向に貫通する
複数本のボルトによって鉛直軸部側に取着、固定される
構造とするのが望ましく、必要に応じて水平翼と別体に
形成し、風車を組み立て設置する際に水平翼の基部をボ
ルトまたは熔接あるいは接着剤によって一体化するよう
にしたものとすることができる。The fan-shaped flange has a function of firmly mounting each base end portion of a plurality of horizontal blades at an accurate mounting position of the vertical shaft portion, and mounts 360 ° on the horizontal plane around the vertical shaft portion. It should be formed in a fan shape with an opening angle equally divided by the number of vertical blades, and it is attached and fixed to the vertical shaft side by a plurality of bolts penetrating in the vertical direction. It is desirable that the base be formed separately from the horizontal blades if necessary, and that the base of the horizontal blades be integrated by bolts, welding, or an adhesive when the wind turbine is assembled and installed.

【００２４】座ぐり孔は、内周側垂直翼部（内周側垂直
翼構成部材）と外周側垂直翼部とを結合する際や、上面
側水平翼部材と下面側水平翼部材とを結合する際に、連
結に使用されるリベットやボルト・ナット等の頭部を翼
型断面形状内に埋没するように装着できるようにして、
完成後の風車に不要な突起を生じないようにする機能を
果たすものであり、使用するリベットやボルト・ナット
等の頭部を完全に埋没可能な直径および深さを確保した
ものとしなければならず、呼び径の大きなボルト・ナッ
トを使用するためには、翼形肉厚の最も厚い部分に穿
孔、形成するのが望ましく、翼長方向に沿って所定間隔
毎に点在するよう形成したものとし、リベットやボルト
・ナットによる締め付け後に、専用のキャップで封鎖し
たり、プレミックスによる充填、あるいはポリエステル
やエポキシ系の接着剤等を充填して翼形に仕上げてしま
えば、翼形の形状を滑らかなものとすることができる。The counterbore hole is used for connecting the inner peripheral side vertical blade portion (inner peripheral side vertical blade constituent member) and the outer peripheral side vertical blade portion, and for connecting the upper surface side horizontal blade member and the lower surface side horizontal blade member. When doing so, the rivets used for connection and the heads of bolts, nuts, etc. can be installed so as to be buried in the wing-shaped cross section,
It has the function of preventing unnecessary protrusions on the completed wind turbine, and must have a diameter and depth that allow the heads of the rivets, bolts, nuts, etc. to be used to be completely buried. However, in order to use bolts and nuts with a large nominal diameter, it is desirable to perforate and form them in the thickest part of the airfoil, and those that are formed at regular intervals along the blade length direction. After tightening with rivets, bolts and nuts, seal with a special cap, fill with premix, or fill with a polyester or epoxy adhesive etc. to finish the airfoil shape. It can be smooth.

【００２５】垂直翼および水平翼の各部をＦＲＰ、特に
熱可塑性樹脂（ＦＲＴＰ）を使用して製造する場合、一
度の射出成形によって各部を成形してしまう効率的な生
産によるものとすることができることは言うまでもな
く、その他、射出成形や真空成形によって得られた部品
同士を組み合わせ、接着剤や熱熔着によって翼形の閉断
面構造を形成するよう貼り合わせたものとすることがで
きる外、ガスインジェクション成形やブロー成形によっ
て内部に中空構造を有する翼形とすることも可能であ
る。また、ＦＲＰとして熱硬化性樹脂（ＦＲＴＳ）を使
用する場合には、手積み法、バッグ法、軟質プランジャ
ー法、マッチドダイ法、フィラメントワインディング
法、プリミックス法、スプレーアップ法、真空注入法、
連続引抜法、連続積層法等公知の各種製造方法によって
製造することが可能となる。以下、図面に示すこの発明
を代表する実施例と共に、その構造について詳述し、こ
の発明に包含される発電用風車翼の構成が、より一層明
確に把握できるようにしていくこととする。When the respective parts of the vertical blades and the horizontal blades are manufactured by using FRP, particularly thermoplastic resin (FRTP), it is possible to form the respective parts by a single injection molding, which results in efficient production. Needless to say, other parts obtained by injection molding or vacuum forming can be combined and bonded together to form an airfoil closed cross-section structure by adhesive or heat welding, as well as gas injection. It is also possible to form an airfoil having a hollow structure inside by molding or blow molding. When a thermosetting resin (FRTS) is used as the FRP, the manual loading method, the bag method, the soft plunger method, the matched die method, the filament winding method, the premix method, the spray-up method, the vacuum injection method,
It can be manufactured by various known manufacturing methods such as a continuous drawing method and a continuous laminating method. Hereinafter, the structure of the wind turbine blade for power generation included in the present invention will be more clearly understood along with the structure of the present invention shown in the drawings as well as the structure thereof.

【００２６】[0026]

【実施例】図１のダリウス型風車翼を有する発電機の正
面図、図２のダリウス型風車翼の平面図、図３の分解状
態にある発電用風車翼の斜視図、および図４の垂直翼の
水平断面図に示される事例は、鉛直軸部を中心とした所
定半径の同一円周上に、３枚の垂直翼を互いに等間隔を
隔るよう配置し、各垂直翼を複数の水平翼によって該鉛
直軸部に連結して、風車翼の全体を鉛直軸部回りに回転
自在とするよう形成した、この発明の基本的構成を備え
た発電用風車翼における代表的な一実施例を示すもので
ある。1 is a front view of a generator having a Darrieus-type wind turbine blade of FIG. 1, a plan view of the Darrieus-type wind turbine blade of FIG. 2, a perspective view of a power generation wind turbine blade in an exploded state of FIG. 3, and a vertical view of FIG. The example shown in the horizontal cross-sectional view of the blades is that three vertical blades are arranged at equal intervals on the same circumference with a predetermined radius centered on the vertical shaft part, and each vertical blade has a plurality of horizontal blades. A typical embodiment of a wind turbine blade for power generation having the basic configuration of the present invention, which is connected to the vertical shaft portion by a blade so that the entire wind turbine blade is rotatable around the vertical shaft portion. It is shown.

【００２７】当該発電用風車翼１は、地上に立設された
支柱体６の上端から上方に向けて延伸された固定軸部６
１に対して回転自在に装着された円筒形の鉛直軸部２の
上端部と下端側中途部との夫々に形成された２組の取付
け用扇型フランジ部２１，２１に対し、各々３枚の水平
翼４，４，……が、図２中に示すように１２０゜の開き
角度を隔てて鉛直軸部２の外周側に向けて延伸された状
態に突設され、上下の水平翼４，４，……は、互いに対
峙する位置に取り付けられ、上下に位置して対をなす水
平翼４，４の端部間には、垂直翼３が夫々一体的に結合
されてダリウス形風車翼の全体形状を形成するものとな
っている。The wind turbine blade 1 for power generation has a fixed shaft portion 6 extending upward from an upper end of a pillar body 6 erected on the ground.
Three pieces each for two sets of mounting fan-shaped flange portions 21 and 21 formed at the upper end portion and the lower end side intermediate portion of the cylindrical vertical shaft portion 2 rotatably attached to 2, the horizontal blades 4, 4, ... Are projectingly provided so as to extend toward the outer peripheral side of the vertical shaft portion 2 with an opening angle of 120 ° as shown in FIG. , 4, ... are mounted at positions facing each other, and vertical blades 3 are integrally connected between the ends of the horizontal blades 4, 4 which are vertically arranged to form a pair, and the Darrieus-type wind turbine blades are integrally connected. Is to form the entire shape of.

【００２８】水平翼４は、図３に示すとおり、基端部か
ら先端部に至る翼断面を上下に２分割した上面側水平翼
部材４１と下面側水平翼部材４２とからなり、夫々の部
品がＦＲＰの射出成形品であってガスインジェクション
によるか、あるいは外側形状部品同士を接着剤によって
貼り合わせる等して、夫々の内部を中空状に形成したも
のに形成され、各上下面側水平翼部材４１，４２の夫々
の基端部には、１２０゜の角度に設定された扇型フラン
ジ４３，４３が一体に形成されると共に、同先端部に
は、垂直翼３の内周側垂直翼部を形成する内周側垂直翼
構成部材３２ａ，３２ｂが一体に結合されており、一方
の上面側水平翼部材４１の側面形状が略Ｌ字状に、ま
た、他方の下面側水平翼部材４２の側面形状が略横転Ｌ
字状に形成した上、両者の対応する下面、上面同士を接
着剤によって接合、一体化し、基端側から先端側にかけ
て既に公知となっているＮＡＣＡ００１２翼形と略同一
の水平翼４に形成したものであり、扇型フランジ４３，
４３もまた一体化され、鉛直軸部２の取付け用扇型フラ
ンジ部２１，２１に対してボルト・ナットを用いて結合
することにより、上下夫々の同一の高さ位置に３枚の水
平翼４，４，４を取着、固定する。As shown in FIG. 3, the horizontal blade 4 is composed of an upper surface side horizontal blade member 41 and a lower surface side horizontal blade member 42 obtained by vertically dividing the blade cross section from the base end portion to the tip end portion into two parts. Is an FRP injection molded product and is formed into a hollow inner part by gas injection or by bonding the outer shape parts to each other with an adhesive, etc. The fan-shaped flanges 43, 43 set at an angle of 120 ° are integrally formed on the base end portions of the blades 41, 42, respectively, and the tip end portions of the fan-shaped flanges 43, 43 are formed on the inner peripheral side of the vertical blade 3. The inner peripheral side vertical blade constituent members 32a and 32b that form the above are integrally connected, and the side surface shape of one upper surface side horizontal blade member 41 is substantially L-shaped, and the other lower surface side horizontal blade member 42 is formed. Lateral shape is approximately rollover L
In addition to being formed in a letter shape, the corresponding lower surface and upper surface are joined and integrated by an adhesive to form a horizontal blade 4 from the base end side to the tip side that is substantially the same as the already known NACA0012 airfoil. The fan-shaped flange 43,
43 is also integrated, and by connecting the mounting fan-shaped flange portions 21 and 21 of the vertical shaft portion 2 with bolts and nuts, three horizontal blades 4 are provided at the same height position in each of the upper and lower sides. , 4, 4 are attached and fixed.

【００２９】また、上面側水平翼部材４１と下面側水平
翼部材４２とを重ね合わせ状態に貼り合わせることによ
って形成された水平翼４の先端部には、内周側垂直翼構
成部材３２ａ，３２ｂが上下方向に延伸、形成されたも
のとなり、水平翼４を含む全体側面形が横転Ｔ形状をな
すものとなり、上下鉛直線上に対をなすものを一組とし
た水平翼４，４の合計４枚の内周側垂直翼構成部材３２
ａ，３２ｂ，……が、それらの各先端を互いに当接状に
隣接する配置となり、それら連続状とした内周側垂直翼
構成部材３２ａ，３２ｂ，……の外周壁面に対し、それ
ら全体に跨がるようにして一枚板状の外周側垂直翼部３
１を当接、接着して一体化してしまうことにより、上下
端間に渡って略均一な水平断面で周知のＮＡＣＡ００２
４翼形の垂直翼３を形成したものである。Further, the inner peripheral side vertical blade constituent members 32a, 32b are provided at the tip of the horizontal blade 4 formed by laminating the upper surface side horizontal blade member 41 and the lower surface side horizontal blade member 42 in a superposed state. Is formed by being vertically stretched, and the overall side shape including the horizontal blades 4 forms a rollover T shape, and a total of 4 horizontal blades 4 and 4 that form a pair on the vertical line. Inner peripheral vertical blade component 32
a, 32b, ... are arranged such that their respective tips are adjacent to each other in abutting contact with each other, and the inner peripheral side vertical blade constituent members 32a, 32b ,. Peripheral side vertical wing part 3 in a plate shape so as to straddle
A well-known NACA002 has a substantially uniform horizontal cross section between the upper and lower ends by abutting and adhering 1 to integrate them.
The vertical wings 3 have a four-wing shape.

【００３０】さらに、水平翼４を構成する上面側水平翼
部材４１と下面側水平翼部材４２、および垂直翼３を構
成する内周側垂直翼構成部材３２と外周側垂直翼部３１
とも、夫々翼の最も肉厚となる部分の翼長方向所定間隔
置きとなる箇所には、図４に示した垂直翼３の場合の水
平断面図において看取できるように、複数の座ぐり孔
５，５，……が穿孔されており、ボルト・ナット５１，
５１，……によって垂直翼３および水平翼４を強固に補
強、結合させた上、ボルト・ナット５１，５１，……の
頭部を収容した座ぐり孔５，５，……の夫々にＦＲＰを
パテ状にして充填し、翼形状を滑らかに仕上げたものと
なっている。Further, the upper surface side horizontal blade member 41 and the lower surface side horizontal blade member 42 constituting the horizontal blade 4, and the inner peripheral side vertical blade constituent member 32 and the outer peripheral side vertical blade portion 31 constituting the vertical blade 3.
In addition, as shown in the horizontal cross-sectional view of the vertical blade 3 shown in FIG. 4, a plurality of counterbore holes are formed in the thickest portions of the blade at predetermined intervals in the blade length direction. 5, 5, ... Are perforated and bolts and nuts 51,
The vertical wing 3 and the horizontal wing 4 are firmly reinforced and coupled by 51, ..., And the FRP is installed in each of the counterbore holes 5,5 ,. Is put into a putty and filled, and the wing shape is finished smoothly.

【００３１】なお、垂直翼３の外周側垂直翼部３１は、
上記した実施例によるものとする外、図５の分解状態に
ある発電用風車翼の斜視図に示した事例のように、上下
複数に分割したものとすることも可能であって、分割し
た外周側垂直翼部３１，３１，３１の何れもが上下に当
接、連続する内周側垂直翼構成部材３２ａ，３２ｂの接
続部を跨ぐ構造で結合することにより、実質的に一枚板
状の外周側垂直翼部３１になるようにしたものとするこ
ともでき、それらも当然にこの発明の外周側垂直翼部３
１に包含されている。The outer peripheral vertical blade portion 31 of the vertical blade 3 is
In addition to the above-described embodiment, it is also possible to divide into a plurality of upper and lower parts as in the case shown in the perspective view of the power generation wind turbine blade in the disassembled state of FIG. All of the side vertical wing portions 31, 31, 31 come into contact with each other in the vertical direction, and are joined in a structure straddling the connecting portions of the continuous inner peripheral side vertical wing constituent members 32a, 32b, so that a substantially single plate shape is obtained. The outer peripheral side vertical wing portion 31 may also be used, which is naturally also the outer peripheral side vertical wing portion 3 of the present invention.
It is included in 1.

【００３２】また、内周側垂直翼構成部材３２ａ，３２
ｂの対峙する端部間を離反させた配置としたため、外周
側垂直翼部３１全長も足らなくなったとき、あるいは内
周側垂直翼構成部材３２ａ，３２ｂの合計長が外周側垂
直翼部３１に対して短尺となるために、対峙する先端同
士を離して配置するようにしたとき等には、内周側垂直
翼構成部材３２ａ，３２ｂ，……によって形成される内
周側垂直翼部３２側の隙間、および垂直翼３外周側垂直
翼部３１として足らない部分、あるいは不足する内周側
垂直翼部３２部分に相当する部分に、夫々不足する内周
側垂直翼部３２および／または外周側垂直翼部３１とす
るために必要となる水平断面形の、図示しない補填部
を、別体に形成して足りている側に一体化するか、また
は、予め足りなくなることを想定できるとき等には、足
り側の反対面に膨出状の補填部を一体形成したものとす
る等して組み立てることにより、実質的に垂直翼３の全
体形を欠陥の無い翼型形状とするよう形成したものとす
ることができる。Further, the inner peripheral side vertical blade constituent members 32a, 32
Since the opposing ends of b are spaced apart from each other, when the outer peripheral side vertical blade portion 31 becomes insufficient in total length, or the total length of the inner peripheral side vertical blade constituent members 32a and 32b is equal to the outer peripheral side vertical blade portion 31. Since the length is short with respect to each other, when the facing tips are arranged apart from each other, the inner peripheral side vertical blade portion 32 side formed by the inner peripheral side vertical blade constituent members 32a, 32b ,. Of the inner peripheral side vertical vane 32 and / or the outer peripheral side of the vertical vane 3 where the outer peripheral side vertical vane part 31 is insufficient, or the inner peripheral side vertical vane part 32 is lacking. For example, when it is possible to assume that a supplementary portion (not shown) having a horizontal cross-sectional shape, which is necessary to form the vertical wing portion 31, is formed separately and is integrated with the side where it is sufficient, or that the supplementary portion is insufficient in advance. Bulges on the opposite side of the foot Of By assembling the like shall interpolator integrally form, it can be obtained by forming to a substantially vertical airfoil shape without the overall shape defect of the blade 3.

【００３３】[0033]

【作用】以上のとおりの構成からなるこの発明の発電用
風車翼１は、上面側水平翼部材４１と下面側水平翼部材
４２とを当接、一体化し、中空構造を有する水平翼４を
形成すると共に、該水平翼４の形成に伴い、内周側垂直
翼構成部材３２ａ，３２ｂ，……によって形成される内
周側垂直翼部３２に外周側垂直翼部３１を当接して一体
化され、同じく中空構造の垂直翼３を形成するようにし
た構成を採用していることから、軽量でありながら水平
翼４と垂直翼３とが連続状に一体化されたものとなって
大きく剛性を高め得るという作用をもたらすことにな
る。In the power generation wind turbine blade 1 of the present invention having the above-described configuration, the upper surface side horizontal blade member 41 and the lower surface side horizontal blade member 42 are brought into contact with each other and integrated to form the horizontal blade 4 having a hollow structure. Along with the formation of the horizontal blade 4, the outer peripheral vertical blade 31 is brought into contact with the inner peripheral vertical blade portion 32 formed by the inner peripheral vertical blade constituent members 32a, 32b, ... Also, since the vertical wing 3 having the same hollow structure is formed, the horizontal wing 4 and the vertical wing 3 are continuously integrated into one body while being lightweight, and the rigidity is greatly increased. It will bring about the effect that it can be enhanced.

【００３４】しかも、その結果、垂直翼３と水平翼４と
の結合部分に応力が集中してしまうことを阻止すると共
に、水平翼４と垂直翼３との連結のための部品が省略で
きて、それら部品による不要な突起を無くすことが可能
になって、回転効率に支障来す空気摩擦抵抗を極力生じ
させないようにする作用も期待できる外、各種形式によ
る風車型式の中から、事前に回転効率に適した形状、構
造の水平翼４と垂直翼３とを決定しさえすれば、それら
に応じた形状、構造の規格部品化をし易くした上、組立
作業の如何に係わらず殆ど同一性能の発電用風車翼１の
実現化が可能になるという作用ももたらされることにな
る。Moreover, as a result, it is possible to prevent the stress from being concentrated on the connecting portion between the vertical blade 3 and the horizontal blade 4, and to omit the component for connecting the horizontal blade 4 and the vertical blade 3. , It is possible to eliminate unnecessary protrusions due to those parts, and it is expected that it will not cause air friction resistance that hinders rotation efficiency as much as possible. If the horizontal blades 4 and the vertical blades 3 having a shape and structure suitable for efficiency are determined, it becomes easy to standardize the shape and structure according to them, and the performance is almost the same regardless of the assembly work. This also brings about the effect that the wind turbine blade 1 for power generation can be realized.

【００３５】また、垂直翼３の外周側垂直翼部３１が、
上下に配置された水平翼４，４の先端から上下方向に突
設状となって同一鉛直線上に当接、連続する内周側垂直
翼構成部材３２ａ，３２ｂを跨ぐようにして一体化され
る構造としたことから、形成される垂直翼３の強度は確
実に一枚板状の構造のものとなり、風車翼１のダリウス
型形状を堅固に維持可能として確実に回転推力が得られ
るように作用し、この作用はまた、各所に設けた座ぐり
孔５，５，……にボルト・ナット５１，５１，……を埋
没するように装着して一体化を補強し、さらに翼形形状
を整えるように座ぐり孔５，５，……にＦＲＰを充填し
て平滑面状に仕上げたものとすることにより、空気抵抗
を悪化させるボルト・ナットの突起を無くして風車翼１
全体の構造強度を増強させた上で、さらに一層確実なも
のとして保証されることになる。Further, the outer peripheral vertical blade portion 31 of the vertical blade 3 is
The upper and lower horizontal blades 4, 4 are vertically projected from the tips of the horizontal blades 4, 4 and abut on the same vertical line, and are integrated so as to straddle continuous inner peripheral side vertical blade constituent members 32a, 32b. Due to the structure, the strength of the vertical blades 3 formed is surely a one-plate structure, and the Darrieus-shaped shape of the wind turbine blade 1 can be firmly maintained so that the rotational thrust can be reliably obtained. However, this action also installs bolts and nuts 51, 51, ... so as to be buried in counterbore holes 5, 5, ... provided at various places to reinforce the integration and further adjust the airfoil shape. As described above, the counterbore holes 5, 5, ... Are filled with FRP and finished to have a smooth surface so that the protrusions of the bolts and nuts that deteriorate the air resistance are eliminated and the wind turbine blade 1
It will be guaranteed as an even more reliable one after increasing the overall structural strength.

【００３６】そして、水平翼４の基端部に形成された扇
型フランジ４３は、実施例に示したとおり、その装着角
度範囲が、例えば予め１２０゜とするか、その他円周を
等分に分割した角度に設定されたものにして、３枚ある
いは等分数に応じた数の水平翼４からなるものとして装
着すれば、自動的且つ正確に所要枚数の水平翼４，４，
……と垂直翼３，３，……との取付け、固定位置が決定
されると共に、全ての垂直翼３，３，……の向きも自動
的且つ正確に決定されるようにしたものとすることを可
能にするという作用に繋がることになる。As shown in the embodiment, the fan-shaped flange 43 formed at the base end of the horizontal blade 4 has a mounting angle range of, for example, 120 ° in advance, or the circumference is equally divided. If the blades are set to the divided angles and are attached as three blades or the number of horizontal blades 4 according to an equal fraction, the required number of horizontal blades 4, 4, automatically and accurately.
... and the vertical wings 3, 3, ... are attached and fixed positions are determined, and the orientations of all the vertical wings 3, 3, ... are automatically and accurately determined. It will lead to the action of making it possible.

【００３７】[0037]

【効果】以上のとおり、この発明の発電用風車翼は、垂
直翼の内周側垂直翼部の一部を分担する内周側垂直翼構
成部材が予め先端側に一体形成されるようにした略Ｌ字
型あるいは略横転Ｔ字型の上面側水平翼部材と下面側水
平翼部材、および、それら上面側水平翼部材と下面側水
平翼部材とを当接、一体化して水平翼を形成する際に、
水平翼に直交する同一鉛直線状に突設状となる各内周側
垂直翼構成部材と一枚板状の外周側垂直翼部という規格
化された既成部材を所定の組合せで組み立てることによ
り、堅牢且つ正確な構造のダリウス型風車翼を実現し得
るようにしたことから、垂直翼と水平翼との結合強度を
充分に確保すると共に、垂直翼と水平翼との連結部分
に、空気抵抗を増加させる各種連結金具を不要とし、垂
直翼および水平翼とも、空気抵抗を格段に低減させて起
動風速を低下させ得る最適化した翼型形状を実現するこ
とを可能にし、しかも、組立作業効率を格段に高める共
に、組立作業の如何に係わらず、精巧且つ高強度のダリ
ウス型風車翼となり、自然エネルギーとして風力を利用
した小型発電向きの発電装置を確実且つ経済的に実現可
能として、降雪地帯のロードヒーティングや融雪屋根、
各種イルミネーション用の照明、その他居住地内の各種
用途の電力として幅広く活用することができるようにす
るという秀れた特徴が得られるものである。As described above, in the wind turbine blade for power generation according to the present invention, the inner peripheral side vertical blade constituent member that shares a part of the inner peripheral side vertical blade portion of the vertical blade is previously integrally formed on the tip side. A substantially L-shaped or a substantially T-shaped upper surface side horizontal wing member and a lower surface side horizontal wing member, and the upper surface side horizontal wing member and the lower surface side horizontal wing member are contacted and integrated to form a horizontal wing. When
By assembling the standardized existing members of the inner peripheral side vertical blade constituent members and the outer peripheral side vertical blade part of a single plate shape, which are projecting in the same vertical line orthogonal to the horizontal blade, in a predetermined combination, Since it was possible to realize a Darrieus-type wind turbine blade with a robust and accurate structure, it was possible to secure sufficient coupling strength between the vertical blades and the horizontal blades, and to provide air resistance to the connecting portion between the vertical blades and the horizontal blades. It eliminates the need for various types of connecting metal fittings and increases the vertical and horizontal blades to achieve an optimized airfoil shape that can significantly reduce the air resistance and lower the starting wind speed. Not only does it increase significantly, it becomes a delicate and high-strength Darrieus-type wind turbine blade regardless of assembly work, and it is possible to reliably and economically realize a power generator for small power generation that uses wind power as natural energy. Road heating and snow melting roof,
The excellent feature is that it can be widely used as lighting for various illuminations and as electric power for various other uses in a residential area.

【００３８】特に、実施例に説明した発電用風車翼１
は、上記した特徴に加え、上下に隣接、配置された水平
翼４，４の内周側垂直翼構成部材３２ａ，３２ｂの端部
を上下に当接状配置とし、それら内周側垂直翼構成部材
３２ａ，３２ｂに跨るように一枚板状の外周側垂直翼部
３１を添設、一体化して垂直翼３を所定翼型形状に仕上
げたものとなっていて、内周側垂直翼構成部材３２ａ，
３２ｂ同士の接続部分の強度を十分確保して応力の分散
を図ることができ、また、水平翼４を夫々中空構造を有
する上面側水平翼部材４１と下面側水平翼部材４２とを
一体化して形成し、垂直翼３を夫々中空構造を有する内
周側垂直翼構成部材３２と外周側垂直翼部３１とを一体
化することによって形成されるようにしたことから、風
車翼１全体の強度を従来構造のものに比較して格段に向
上させたものとすることができるという利点が得られる
ものとなる。In particular, the wind turbine blade 1 for power generation described in the embodiment.
In addition to the features described above, the inner peripheral side vertical blade constituent members 32a and 32b of the horizontal blades 4 and 4 which are vertically adjacent to each other are arranged in a vertically abutting manner so that the inner peripheral side vertical blade structure is formed. A single plate-shaped outer peripheral side vertical blade portion 31 is provided so as to straddle the members 32a and 32b, and the vertical blades 3 are finished to have a predetermined blade shape by integrating them. 32a,
It is possible to sufficiently secure the strength of the connection portion between the 32b and to disperse the stress, and to integrate the horizontal blades 4 with the upper surface side horizontal blade member 41 and the lower surface side horizontal blade member 42 each having a hollow structure. Since the vertical blades 3 are formed by integrating the inner peripheral side vertical blade constituent member 32 and the outer peripheral side vertical blade portion 31 each having a hollow structure, the strength of the entire wind turbine blade 1 is improved. The advantage is that it can be remarkably improved as compared with the conventional structure.

【００３９】さらに、垂直翼３および水平翼４を構成す
る各部品の結合は、接着と共に、最も肉厚となる部分の
翼長方向所定間隔置きに穿孔してある上面側水平翼部材
および下面側水平翼部材双方の座ぐり孔５にボルト・ナ
ット５１を装着、締付けてからＦＲＰ樹脂を充填、平滑
仕上げして補強、一体化してなるものとし、ボルト・ナ
ット５１の外部への突出を無くして高強度の物とし、最
適な翼形状の完成を可能とし、また、水平翼４の基端に
１２０゜の角度に設定された扇型フランジ４３を形成
し、一般的な取付け手段によって固定、組み立てさえす
れば、３枚の水平翼４の取付けは、夫々の位置について
特別の測定や調整等を一切行わずにして正確に決定され
てしまうものとなり、設置作業の工数を格段に削減し、
精巧且つ迅速な組立て、設置を実現することができて極
めて経済的なものとなる上、設置後の不要な振動や騒音
の発生等といった厄介なトラブルを確実に回避すること
ができるという極めて実用的な効果が得られものとな
る。Further, the components of the vertical wing 3 and the horizontal wing 4 are joined together by bonding, and the upper side horizontal wing member and the lower side which are perforated at predetermined intervals in the wing length direction at the thickest portion. The bolts and nuts 51 are attached to the counterbore holes 5 on both the horizontal blade members, and after tightening, they are filled with FRP resin, smoothed and reinforced, and integrated to eliminate the protrusion of the bolts and nuts 51 to the outside. It is made of high-strength material and enables the optimum blade shape to be completed. In addition, a fan-shaped flange 43 set at an angle of 120 ° is formed at the base end of the horizontal blade 4, and fixed and assembled by a general mounting means. If so, the installation of the three horizontal blades 4 will be accurately determined without any special measurement or adjustment for each position, and the man-hours for installation work will be significantly reduced.
It is extremely practical because it enables sophisticated and quick assembly and installation, which makes it extremely economical, and can reliably avoid troublesome troubles such as unnecessary vibration and noise after installation. The effect is obtained.

【００４０】叙述の如く、この発明の発電用風車翼は、
その新規な構成によって所期の目的を遍く達成可能とす
るものであり、しかも、製造も容易で比較的廉価にて市
場への提供が可能となり、高強度且つ軽量な上に従前か
らのダリウス型風車翼に比較して遥かに経済的であっ
て、居住地内に設置しても場所を取らず、現場での組立
て設置作業効率も大幅に高め得るものなり、費用の削減
と工期の短縮とを確実に達成可能にすることから、極め
て安全な発電装置として幅広い用途への活用を図ること
できるものとなり、環境汚染を生じない自然エネルギー
の利用が益々求められる電力業界からは勿論のこと、民
間あるいは公共の各種施設の管理者からもまた高い評価
がなされ、延いては一般市民生活に大いに貢献すること
にも繋がるものとして、広範に渡って利用、普及してい
くものになると予想される。As described above, the wind turbine blade for power generation of the present invention is
The new structure allows the intended purpose to be achieved uniformly, and it is easy to manufacture and can be provided to the market at a comparatively low price. It has high strength and light weight, and it is a Darrieus type from the past. It is much more economical than a wind turbine blade, and even if it is installed in a residential area, it does not take up much space, and the efficiency of assembly and installation work on site can be greatly improved, reducing costs and shortening the construction period. Since it can be reliably achieved, it can be used for a wide range of applications as an extremely safe power generation device, not only from the electric power industry that is increasingly required to use natural energy that does not cause environmental pollution, but also from the private sector or It is expected that it will be widely used and spread, as it will be highly evaluated by the managers of various public facilities and will contribute greatly to the life of the general public. It is.

【図面の簡単な説明】[Brief description of drawings]

図面は、この発明の発電用風車翼の技術的思想を具現化
した代表的な幾つかの実施例を示すものである。The drawings show some typical examples embodying the technical idea of the wind turbine blade for power generation of the present invention.

【図１】ダリウス型風車翼を利用した発電機を示す正面
図である。FIG. 1 is a front view showing a generator using a Darrieus-type wind turbine blade.

【図２】発電用風車翼の構造を示す平面図である。FIG. 2 is a plan view showing a structure of a wind turbine blade for power generation.

【図３】発電用風車翼の構造を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a structure of a wind turbine blade for power generation.

【図４】垂直翼の断面構造を示す水平断面図である。FIG. 4 is a horizontal sectional view showing a sectional structure of a vertical blade.

【図５】垂直翼構造を変更した発電用風車翼を示す分解
斜視図である。FIG. 5 is an exploded perspective view showing a wind turbine blade for power generation with a modified vertical blade structure.

【図６】従来の発電用風車翼を示す正面図である。FIG. 6 is a front view showing a conventional wind turbine blade for power generation.

【符号の説明】[Explanation of symbols]

１ 発電用風車翼 ２ 鉛直軸部 ２１ 同 取付け用扇型フランジ部 ３ 垂直翼 ３１ 同 外周側垂直翼部 ３２ 同 内周側垂直翼部 ３２ａ 同 略Ｌ字型上面側水平翼部材に一体形成さ
れる内周側垂直翼構成部材 ３２ｂ 同 略転倒Ｌ字型下面側水平翼部材に一体形
成される内周側垂直翼構成部材 ４ 水平翼 ４１ 同 上面側水平翼部材 ４２ 同 下面側水平翼部材 ４３ 同 扇型フランジ ５ 座ぐり孔 ５１ 同 ボルト・ナット ６ 支柱体 ６１ 同 固定軸部 ７ 連結金具DESCRIPTION OF SYMBOLS 1 Wind turbine blade 2 for power generation Vertical shaft part 21 The same fan-shaped flange part 3 for mounting 3 Vertical blade 31 Same outer peripheral side vertical blade part 32 Same inner peripheral side vertical blade part 32a Same L-shaped upper surface side It is integrally formed with the horizontal blade member. Inner peripheral side vertical blade constituent member 32b Inner peripheral side vertical blade constituent member 4 Horizontal blade 41 Same upper surface side horizontal blade member 42 Same lower surface side horizontal blade member 43 Same fan-shaped flange 5 Counterbore 51 Same bolts and nuts 6 Post body 61 Same fixed shaft section 7 Connecting metal fittings

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 ダリウス型風車における複数の水平翼
が、夫々の先端に内周側垂直翼構成部材を直交状となる
上下方向または上下何れかの方向に所定長分だけ延伸、
一体形成し、平面配置上で同一となる上下に隣接するそ
れら内周側垂直翼構成部材の外側全体または複数個に跨
らせて外周側垂直翼部を添設、一体化し、各水平翼の端
部に所定の肉厚で所定長さの垂直翼部を一体的に形成し
たことを特徴とする発電用風車翼。1. A plurality of horizontal blades in a Darrieus-type wind turbine, each of which has an inner peripheral side vertical blade constituent member extending at a predetermined length in an up-down direction or an up-down direction which is orthogonal to each other,
They are integrally formed, and the outer peripheral side vertical wing portions are attached and integrated so as to extend over the entire outside or a plurality of the inner peripheral side vertical blade constituent members that are vertically adjacent to each other in the same plane arrangement. A wind turbine blade for power generation, characterized in that a vertical blade portion having a predetermined thickness and a predetermined length is integrally formed at an end portion. 【請求項２】 鉛直軸部から所定半径とした同一円周上
に、互いに等間隔を隔てて配置される複数枚の垂直翼
と、当該鉛直軸部の上下適所から略水平方向に延伸し、
その先端を各垂直翼の翼厚方向内側となる内周側垂直翼
部に達しさせて実質的に各垂直翼を鉛直軸部に連結させ
るようにする複数枚の水平翼とからなるダリウス型風車
における各水平翼が、夫々の先端に、予め、対応する垂
直翼の翼厚方向内側となる内周側垂直翼部の一部に相当
する内周側垂直翼構成部材を直交状上下方向あるいは上
下方向何れかに所定長分だけ延伸、一体化してなる略Ｌ
字型あるいは横転Ｔ字型形状のものに形成され、それら
水平翼の複数個毎を一組とし、それらが鉛直軸部外周の
平面配置上で同一となる上下に隣接、配置され、各内周
側垂直翼構成部材相互が上下に当接状配置となるように
した上、それら当接状の各内周側垂直翼構成部材外側全
体に跨るように、垂直翼の翼厚方向外側とする一枚板状
の外周側垂直翼部を添設、一体化して所定の肉厚で所定
長さの垂直翼部が、各水平翼の先端に一体形成されるよ
うにしたことを特徴とする発電用風車翼。2. A plurality of vertical blades arranged at equal intervals from each other on the same circumference with a predetermined radius from the vertical shaft portion, and extending in a substantially horizontal direction from a proper position above and below the vertical shaft portion,
Darrieus-type wind turbine consisting of a plurality of horizontal blades whose tip reaches the inner-peripheral-side vertical blade portion, which is the inner side in the blade thickness direction of each vertical blade, to substantially connect each vertical blade to the vertical shaft portion. Each of the horizontal blades in each of the vertical blades has, at its tip, an inner peripheral side vertical blade component corresponding to a part of the inner peripheral side vertical blade portion, which is the inner side in the blade thickness direction of the corresponding vertical blade, in the vertical direction or the vertical direction. Approximately L formed by stretching and integrating a predetermined length in either direction
Each of the horizontal blades is formed into a letter-shaped or rollover T-shaped shape, and a plurality of horizontal blades are set as a set, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion. The side vertical blade constituent members are arranged vertically in an abutting arrangement, and are arranged outside the vertical blade in the blade thickness direction so as to extend over the entire outer side of each abutting inner peripheral side vertical blade constituent member. For power generation, a single plate-shaped outer peripheral vertical blade is attached and integrated to form a vertical blade having a predetermined thickness and a predetermined length integrally at the tip of each horizontal blade. Windmill wings. 【請求項３】 鉛直軸部から所定半径とした同一円周上
に、互いに等間隔を隔てて配置される複数枚の垂直翼
と、当該鉛直軸部の上下適所から略水平方向に延伸し、
その先端を各垂直翼の翼厚方向内側となる内周側垂直翼
部に達しさせて実質的に各垂直翼を鉛直軸部に連結させ
るようにする複数枚の水平翼とからなるダリウス型風車
における各水平翼が、上面側水平翼部材と下面側水平翼
部材とに分割形成されると共に、夫々の先端に、予め、
対応する垂直翼の翼厚方向内側となる内周側垂直翼部の
一部に相当する内周側垂直翼構成部材を直交状上下方向
何れかに所定長分だけ延伸、一体化して略Ｌ字型上面側
水平翼部材および略転倒Ｌ字型下面側水平翼部材に形成
され、それら上面側水平翼部材と下面側水平翼部材とを
一対として上下に一体化してなる水平翼の複数個毎を一
組とし、それらが鉛直軸部外周の平面配置上で同一とな
る上下に隣接、配置され、各内周側垂直翼構成部材相互
が上下に当接状配置となるようにした上、それら当接状
の各内周側垂直翼構成部材外側全体に跨るように、垂直
翼の翼厚方向外側とする一枚板状の外周側垂直翼部を添
設、一体化して所定の肉厚で所定長さの垂直翼部が、各
水平翼の先端に一体形成されるようにしたことを特徴と
する発電用風車翼。3. A plurality of vertical blades arranged at equal intervals from each other on the same circumference with a predetermined radius from the vertical shaft portion, and extending in a substantially horizontal direction from a proper position above and below the vertical shaft portion,
Darrieus-type wind turbine consisting of a plurality of horizontal blades whose tip reaches the inner-peripheral-side vertical blade portion, which is the inner side in the blade thickness direction of each vertical blade, to substantially connect each vertical blade to the vertical shaft portion. Each horizontal wing in, is divided and formed into an upper surface side horizontal wing member and a lower surface side horizontal wing member, and at the tip of each, in advance,
An inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion, which is on the inner side in the blade thickness direction of the corresponding vertical blade, is extended in a perpendicular direction in a vertical direction by a predetermined length and integrated to form a substantially L-shape. Each of the plurality of horizontal blades formed on the upper surface side horizontal blade member and the substantially inverted L-shaped lower surface side horizontal blade member, and the upper surface side horizontal blade member and the lower surface side horizontal blade member as a pair are vertically integrated. One set of them is arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion, and the inner peripheral side vertical blade constituent members are arranged vertically in contact with each other. A single plate-shaped outer peripheral vertical blade that is on the outer side in the blade thickness direction of the vertical blade is attached so as to extend over the entire outside of each inner peripheral side vertical blade constituent member. A wind turbine blade for power generation, characterized in that a vertical blade portion having a length is integrally formed at the tip of each horizontal blade. 【請求項４】 鉛直軸部から所定半径とした同一円周上
に、互いに等間隔を隔てて配置される複数枚の垂直翼
と、当該鉛直軸部の上下適所から略水平方向に延伸し、
その先端を各垂直翼の翼厚方向内側となる内周側垂直翼
部に達しさせて実質的に各垂直翼を鉛直軸部に連結させ
るようにする複数枚の水平翼とからなるダリウス型風車
における各水平翼が、上面側水平翼部材と下面側水平翼
部材とに分割形成されると共に、夫々の先端に、予め、
対応する垂直翼の翼厚方向内側となる内周側垂直翼部の
一部に相当する内周側垂直翼構成部材を直交状上下方向
何れかに所定長分だけ延伸、一体化し、何れもＦＲＰ製
中空翼構造とした略Ｌ字型上面側水平翼部材および略転
倒Ｌ字型下面側水平翼部材に形成され、それら上面側水
平翼部材と下面側水平翼部材とを一対として接着剤およ
び／またはボルト・ナットによって一体化して所定肉厚
としてなる水平翼の複数個毎を一組とし、それらが鉛直
軸部外周の平面配置上で同一となる上下に隣接、配置さ
れ、各内周側垂直翼構成部材相互が上下に当接状配置と
なるようにした上、それら当接状の各内周側垂直翼構成
部材外側全体に跨るように、垂直翼の翼厚方向外側とす
る一枚板状でＦＲＰ製中空翼構造とした外周側垂直翼部
を接着剤および／またはボルト・ナットを用いて添設、
一体化して所定の肉厚で所定長さの垂直翼部が、各水平
翼の先端に一体形成されるようにしたことを特徴とする
発電用風車翼。4. A plurality of vertical blades arranged at equal intervals from each other on the same circumference with a predetermined radius from the vertical shaft portion, and extending in a substantially horizontal direction from a proper position above and below the vertical shaft portion,
Darrieus-type wind turbine consisting of a plurality of horizontal blades whose tip reaches the inner-peripheral-side vertical blade portion, which is the inner side in the blade thickness direction of each vertical blade, to substantially connect each vertical blade to the vertical shaft portion. Each horizontal wing in, is divided and formed into an upper surface side horizontal wing member and a lower surface side horizontal wing member, and at the tip of each, in advance,
The inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion, which is the inner side in the blade thickness direction of the corresponding vertical blade, is stretched and integrated for a predetermined length in any of the orthogonal vertical directions, and both are FRP. An approximately L-shaped upper surface side horizontal wing member and a substantially inverted L-shaped lower surface side horizontal wing member having a hollow wing structure made of a hollow wing structure, and an adhesive and / Alternatively, a plurality of horizontal blades, which are integrated with bolts and nuts and have a predetermined thickness, are set as a set, and they are arranged vertically adjacent to each other on the same plane arrangement on the outer circumference of the vertical shaft portion, and each inner circumference is vertical. The blades are arranged vertically in abutting contact with each other, and the outer blades of the vertical blades are arranged on the outer side in the thickness direction so as to extend over the entire outer side of the abutting vertical blade constituent members. -Like FRP hollow wing structure with outer peripheral side vertical wing is adhesive and / The other is by using the bolts and nuts additionally provided,
A wind turbine blade for power generation, characterized in that a vertical blade portion having a predetermined wall thickness and a predetermined length is integrally formed at the tip of each horizontal blade. 【請求項５】 鉛直軸部から所定半径とした同一円周上
に、互いに等間隔を隔てて配置される複数枚の垂直翼
と、当該鉛直軸部の上下適所から略水平方向に延伸し、
その先端を各垂直翼の翼厚方向内側となる内周側垂直翼
部に達しさせて実質的に各垂直翼を鉛直軸部に連結させ
るようにする複数枚の水平翼とからなるダリウス型風車
における各水平翼が、上面側水平翼部材と下面側水平翼
部材とに分割形成されると共に、夫々の先端に、予め、
対応する垂直翼の翼厚方向内側となる内周側垂直翼部の
一部に相当する内周側垂直翼構成部材を直交状上下方向
何れかに所定長分だけ延伸、一体化し、何れもＦＲＰ製
中空翼構造とした略Ｌ字型上面側水平翼部材および略転
倒Ｌ字型下面側水平翼部材に形成され、それら上面側水
平翼部材と下面側水平翼部材とを一対として接着剤で接
合した上、最も肉厚となる部分の翼長方向所定間隔置き
に穿孔してある上面側水平翼部材および下面側水平翼部
材双方の座ぐり孔にボルト・ナットを装着、締付けてか
らＦＲＰ樹脂を充填、平滑仕上げして補強、一体化して
なる所定肉厚の水平翼の複数個毎を一組とし、それらが
鉛直軸部外周の平面配置上で同一となる上下に隣接、配
置され、各内周側垂直翼構成部材相互が上下に当接状配
置となるようにした上、それら当接状の各内周側垂直翼
構成部材外側全体に跨るように、垂直翼の翼厚方向外側
とする一枚板状でＦＲＰ製中空翼構造とした外周側垂直
翼部を添設、接着剤で接合し、前記した各水平翼先端に
連続となる垂直翼にすると共に、該垂直翼の最も肉厚と
なる部分の翼長方向所定間隔置きに穿孔してある内周側
垂直翼構成部材および外周側垂直翼部双方の座ぐり孔に
ボルト・ナットを装着、締付けてからＦＲＰ樹脂を充
填、平滑仕上げして補強、一体化し、所定の肉厚で所定
長さの垂直翼部が、各水平翼の先端に一体形成されるよ
うにしたことを特徴とする発電用風車翼。5. A plurality of vertical blades arranged at equal intervals from each other on the same circumference having a predetermined radius from the vertical shaft portion, and extending in a substantially horizontal direction from a proper position above and below the vertical shaft portion,
Darrieus-type wind turbine consisting of a plurality of horizontal blades whose tip reaches the inner-peripheral-side vertical blade portion, which is the inner side in the blade thickness direction of each vertical blade, to substantially connect each vertical blade to the vertical shaft portion. Each horizontal wing in, is divided and formed into an upper surface side horizontal wing member and a lower surface side horizontal wing member, and at the tip of each, in advance,
The inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion, which is the inner side in the blade thickness direction of the corresponding vertical blade, is stretched and integrated for a predetermined length in any of the orthogonal vertical directions, and both are FRP. It is formed on a substantially L-shaped upper surface side horizontal blade member and a substantially L-shaped lower surface side horizontal blade member having a hollow wing structure, and the upper surface side horizontal blade member and the lower surface side horizontal blade member are paired by an adhesive agent. In addition, attach bolts and nuts to the counterbore holes on both the upper and lower horizontal blade members, which are drilled at predetermined intervals in the blade length direction in the thickest part, and tighten the FRP resin after tightening. A plurality of horizontal blades with a predetermined wall thickness, which are filled, smoothed, reinforced, and integrated, are set as a set, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion. Make sure that the peripheral vertical blade components are in contact with each other vertically. In addition, the outer peripheral vertical blades having a single-plate FRP hollow blade structure, which are on the outer side in the blade thickness direction of the vertical blades, are added so as to extend over the entire outer side of the inner peripheral side vertical blade constituent members in contact with each other. Installation and bonding with an adhesive to make a vertical blade continuous to the tip of each horizontal blade as described above, and the innermost vertical side where the thickest portions of the vertical blades are perforated at predetermined intervals in the blade length direction Bolts and nuts are installed in the counterbore holes of both the blade constituent members and the vertical blades on the outer peripheral side, and after tightening, they are filled with FRP resin, smoothed and reinforced to integrate them, and the vertical blades have a specified thickness and a specified length. However, the wind turbine blade for power generation is characterized in that it is integrally formed at the tip of each horizontal blade. 【請求項６】 鉛直軸部から所定半径とした同一円周上
に、互いに等間隔を隔てて配置される複数枚の垂直翼
と、当該鉛直軸部の上下適所から略水平方向に延伸し、
その先端を各垂直翼の翼厚方向内側となる内周側垂直翼
部に達しさせて実質的に各垂直翼を鉛直軸部に連結させ
るようにする複数枚の水平翼とからなるダリウス型風車
における各水平翼が、翼基端側に鉛直軸部取着用の扇型
フランジを有する上面側水平翼部材と、同様の扇型フラ
ンジを有する下面側水平翼部材とに分割形成されると共
に、夫々の先端に予め対応する垂直翼の翼厚方向内側と
なる内周側垂直翼部の一部に相当する内周側垂直翼構成
部材を直交状上下方向何れかに所定長分だけ延伸、一体
化し、何れもＦＲＰ製中空翼構造とした略Ｌ字型上面側
水平翼部材および略転倒Ｌ字型下面側水平翼部材に形成
され、それら上面側水平翼部材と下面側水平翼部材とを
一対としておよび／またはボルト・ナットによって一体
化して所定肉厚としてなる水平翼の複数個毎を一組と
し、それらが鉛直軸部外周の平面配置上で同一となる上
下に隣接、配置され、各翼基端側は、夫々上下に対をな
す扇型フランジで鉛直軸部に連結されると共に、各翼先
端側は、各内周側垂直翼構成部材相互が上下に当接状配
置となるようにした上、それら当接状の各内周側垂直翼
構成部材外側全体に跨るように、垂直翼の翼厚方向外側
とする一枚板状でＦＲＰ製中空翼構造とした外周側垂直
翼部を接着剤および／またはボルト・ナットを用いて添
設、一体化して所定の肉厚で所定長さの垂直翼部が、各
水平翼の先端に一体形成されるようにしたことを特徴と
する発電用風車翼。6. A plurality of vertical blades arranged at equal intervals from each other on the same circumference having a predetermined radius from the vertical shaft portion, and extending in a substantially horizontal direction from an appropriate place above and below the vertical shaft portion,
Darrieus-type wind turbine consisting of a plurality of horizontal blades whose tip reaches the inner-peripheral-side vertical blade portion, which is the inner side in the blade thickness direction of each vertical blade, to substantially connect each vertical blade to the vertical shaft portion. Each horizontal blade in, is divided into an upper surface side horizontal blade member having a fan-shaped flange for attaching the vertical shaft portion on the blade base end side, and a lower surface side horizontal blade member having a similar fan-shaped flange, and respectively. The inner peripheral side vertical blade constituent member corresponding to a part of the inner peripheral side vertical blade portion, which is the inner side in the blade thickness direction of the vertical blade corresponding to the tip of, is stretched and integrated by a predetermined length in any of the orthogonal vertical directions. All of which are formed into a substantially L-shaped upper surface side horizontal blade member and a substantially inverted L-shaped lower surface side horizontal blade member having a hollow blade structure made of FRP, and the upper surface side horizontal blade member and the lower surface side horizontal blade member as a pair. And / or bolts and nuts are integrated to achieve a specified wall thickness. Each of the horizontal blades consists of a set of fan blades, and they are arranged vertically adjacent to each other in the same plane arrangement on the outer circumference of the vertical shaft portion. Each of the inner peripheral side vertical blades is connected to the vertical shaft portion so that the inner peripheral side vertical blade constituent members are vertically arranged in contact with each other. An outer peripheral side vertical blade portion having a FRP hollow blade structure made of a single plate, which is the outer side in the blade thickness direction of the vertical blade so as to extend over the entire outside of the constituent member, is attached using an adhesive and / or a bolt / nut, A wind turbine blade for power generation, characterized in that a vertical blade portion having a predetermined wall thickness and a predetermined length is integrally formed at the tip of each horizontal blade.