JP4090810B2 - Savonius type windmill - Google Patents

Savonius type windmill Download PDF

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Publication number
JP4090810B2
JP4090810B2 JP2002222276A JP2002222276A JP4090810B2 JP 4090810 B2 JP4090810 B2 JP 4090810B2 JP 2002222276 A JP2002222276 A JP 2002222276A JP 2002222276 A JP2002222276 A JP 2002222276A JP 4090810 B2 JP4090810 B2 JP 4090810B2
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Prior art keywords
arc
wind
impeller
section
type windmill
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JP2004060577A (en
Inventor
徳之 河野
次郎 塚原
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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    • 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

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Description

【０００１】
【発明の属する技術分野】
本発明は、例えば風力発電などに用いられるサボニウス型風車に関する。
【０００２】
【従来の技術】
サボニウス型風車は、羽根車が風力によって効率良く回転するため、設計耐風速を越えるような強風下では、過度に高速回転をしてしまい、強度的に耐えられず、破損してしまうことがある。また、サボニウス型風車を例えば風力発電に用いるような場合は、強風時の発電機保護の対策を講じておく必要もある。
【０００３】
本発明は、このような背景において、強風下でも破損することなくそれをかわすことができ、また、風力発電に用いる場合にも発電機を保護することができるサボニウス型風車を提供することを課題とする。
【０００４】
【課題を解決するための手段】
上記の課題は、羽根車に備えられた対の円弧状断面羽根がそれぞれ、偏心位置から回転中心位置の側に移動することができるようになされていることを特徴とするサボニウス型風車によって解決される。
【０００５】
この風車では、強風下において、対の円弧状断面羽根がそれぞれ偏心位置から回転中心位置の側に移動することで、強風をかわし、それによって破損するのを防がれる。また、風力発電に用いる場合には、羽根車がこのように強風をかわせることによって過度の高速回転を抑えられ、発電機を保護することができる。
【０００６】
また、上記の課題は、羽根車に備えられた対の円弧状断面羽根がそれぞれ、その円弧方向の中間部位置においてヒンジで内向きに屈折し円弧方向の両端が接近した閉じ状態になることができるようになされていることを特徴とするサボニウス型風車によっても解決される。
【０００７】
この風車では、強風下において、対の円弧状断面羽根がそれぞれ内向きに屈折し円弧方向の両端が接近した閉じ状態になることで、強風をかわし、破損するのを防がれる。また、風力発電に用いるような場合には、羽根車がこのように強風をかわせることで過度の高速回転を抑えられ、発電機を保護することができる。
【０００８】
【発明の実施の形態】
次に、本発明の実施形態を図面に基づいて説明する。
【０００９】
図１（イ）に示す第１実施形態のサボニウス型風車は風力発電に用いられるもので、１は羽根車であり、図示しないフレームに回転自在に保持され、この羽根車１の回転が発電部２に伝えられて発電し、その発電した電気が蓄電部９に蓄えられるようになされている。
【００１０】
上記の羽根車１は、対の円弧状断面羽根３，３と、上下の円板４，４とを備えている。そして、上下の円板４，４にはそれぞれ、図１（ロ−１）（ロ−２）に示すように、対のレール５，５が回転中心位置６を挟む両側を互いに平行に延ばされていると共に、各円弧状断面羽根３，３の上下の端部において円周方向の両端部にピン７…が突設されており、一方の円弧状断面羽根３のピン７…が、回転中心位置６を挟む一方のレール５と係合し、また、もう一方の円弧状断面羽根３のピン７…が、回転中心位置６を挟むもう一方のレール５と係合することで、対の円弧状断面羽根３，３がそれぞれ、風力を受けて羽根車１を回転させる偏心位置と、風力による回転をしないあるいは抑えられる回転中心位置６の側との間で行き来をすることができるようになされている。
【００１１】
そして、対の円弧状断面羽根３，３を偏心位置に保持したり、回転中心位置６の側に移動させたり、回転中心位置６の側に保持したりする駆動手段が、図示しないけれども備えられている。この駆動手段としては、例えば、円板４側に固定した駆動手段としてのシリンダーのロッドを円弧状断面羽根３のピン７と連結した構造のものなどを用いることができる。
【００１２】
その場合に、上記のようなシリンダー等の駆動手段を、スイッチなどの操作部を操作してマニアルでコントロールしたり、あるいは、風速や羽根車１の回転数を検知センサーで検知し制御手段がセンサーの検知信号に基づいて自動でコントロールするようになどなされていてよい。
【００１３】
あるいはまた、通常時は対の円弧状断面羽根３，３がバネ等の付勢手段による付勢力で偏心位置に保持され、強風時には羽根車１の回転遠心力や風力による流体力学的な力などによって円弧状断面羽根３，３が偏心位置から回転中心位置の側に移動していき、これらの力の釣り合い関係やロック機構などによって円弧状断面羽根３，３が回転中心位置６の側に保持されるようにする機構が用いられてもよい。もちろん、これらに限らず種々の機構が用いられてよい。
【００１４】
上記のサボニウス型風車では、図２（イ）に示すように、通常の風Ｗ１が吹いている時は、対の円弧状断面羽根３，３が偏心位置に位置保持されることによって、羽根車１は効率良く回転し、図１（イ）に示す発電部２も効率良く発電する。そして、強風Ｗ２時には、図２（ロ）に示すように、対の円弧状断面羽根３，３が回転中心位置６の側に移動しその位置に位置保持されることによって、強風をかわし、羽根車１の回転も抑えられて破損が防がれる。これによりまた、強風時の発電部２のローターの回転も抑えられ、発電部２も保護される。
【００１５】
図３に示す第２実施形態のサボニウス型風車に用いられている羽根車１は、円弧状断面羽根３，３のそれぞれが、円弧方向の中央部の一箇所において二つの分割羽根材３ａ，３ａに分割され、これら分割羽根材３ａ，３ａがヒンジ結合３ｂされており、それによって、円弧状に開いた状態から、内向きに屈折し、円弧方向の両端が接近した閉じ状態となることができるようになされている。なお、この動作を実現するため、上下の円板４，４にレール５…が設けられ、これらレール５…に各円弧状断面羽根３，３のピン７…が移動自在に係合されている。
【００１６】
そして、本実施形態では、各円弧状断面羽根３には、これらを開き状態に保持するバネなどの付勢手段が備えられると共に、分割羽根材３ａ，３ａ間に羽根閉じ手段としてのパラシュート８が備えられている。このパラシュート８は、円弧状断面羽根３の凹所面に通常の風が作用しただけでは開かず、強風による風圧が作用してはじめて開き、それによって、強風時に、円弧状断面羽根３，３を付勢手段による付勢力に抗して閉じ状態にする誘導力を生じさせるものである。
【００１７】
上記のサボニウス型風車では、図４（イ）に示すように、通常の風Ｗ１が吹いている時は、対の円弧状断面羽根３，３がそれぞれ円弧状に開いた状態に保持されることによって、羽根車１は効率良く回転し、発電部も効率良く発電する。そして、強風Ｗ２時には、図４（ロ）に示すように、その風圧によって、パラシュート８が開き、その閉じ誘導力によって左右の分割羽根材３ａ，３ａが内向きに屈折し円弧状断面羽根３，３が閉じた状態になる。それによって、強風がかわされ、羽根車１の回転も抑えられて破損が防がれる。これによりまた、強風時の発電部のローターの回転も抑えられ、発電部も保護される。
【００１８】
なお、第２実施形態のタイプにおいて、通常時は対の円弧状断面羽根３，３がバネ等の付勢手段による付勢力で開き状態に保持され、強風時には円弧状断面羽根３，３が、その回転遠心力や風力によるその他の流体力学的な力などによって開き状態から閉じ状態へと変化していき、これらの力の釣り合い関係やロック機構などによって閉じ状態に保持されるようになされた機構などが用いられてもよい。
【００１９】
もちろん、各円弧状断面羽根３，３を開き状態から閉じ状態にするシリンダーなどの駆動手段を備えさせ、この駆動手段を、マニアルでコントロールしたり、あるいは、風速や羽根車１の回転数を検知センサーで検知し制御手段がセンサーの検知信号に基づいて自動でコントロールするようになどなされていてもよいし、開き状態から閉じ状態にする手段に特段の制限はない。
【００２０】
また、各円弧状断面羽根３，３が、強風時にヒンジ結合部３ｂで屈折して周方向の両端が接近状態となればよく、各円弧状断面羽根３の閉じた時の位置や閉じた時の向きに特段の制限はない。また、各円弧状断面羽根は、周方向の２箇所以上の位置でヒンジ結合されたものであってもよい。
【００２１】
以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で、各種の変更が可能である。例えば、上記の実施形態では、本発明のサボニウス型風車が風力発電に用いられる場合を示しているが、風力発電以外の用途に用いられてもよい。
【００２２】
【発明の効果】
本発明は、以上のとおりのものであるから、強風下でも破損することなくそれをかわすことができ、また、風力発電に用いる場合にも発電機を保護することができる。
【図面の簡単な説明】
【図１】第１実施形態のサボニウス型風車を示すもので、図（イ）は側面図、図（ロ−１）は羽根車の上部を示す分解斜視図、図（ロ−２）は羽根車の下部を示す分解斜視図である。
【図２】図（イ）は通常の風が吹いている時の羽根車の平面断面図、図（ロ）は強風時の羽根車の平面断面図である。
【図３】第２実施形態のサボニウス型風車を示すもので、羽根車の分解斜視図である。
【図４】図（イ）は通常の風が吹いている時の羽根車の平面断面図、図（ロ）は強風時の羽根車の平面断面図である。
【符号の説明】
１…羽根車
２…発電部
３…円弧状断面羽根
３ｂ…ヒンジ
６…回転中心位置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a Savonius type windmill used for wind power generation, for example.
[0002]
[Prior art]
Savonius type windmills rotate efficiently with wind power, so the impeller rotates excessively at high wind speeds exceeding the design wind speed, and may not be strong enough to be damaged. . Further, when a Savonius type windmill is used for wind power generation, for example, it is necessary to take measures to protect the generator during strong wind.
[0003]
In such a background, the present invention provides a Savonius type windmill that can dodge it without being damaged even under strong winds, and can protect a generator even when used for wind power generation. And
[0004]
[Means for Solving the Problems]
The above problem is solved by a Savonius type windmill characterized in that each pair of arcuate section blades provided in the impeller can move from the eccentric position to the rotation center position. The
[0005]
In this windmill, the pair of arc-shaped cross-section blades move from the eccentric position to the rotation center position side under the strong wind, so that the strong wind can be avoided and the damage can be prevented. Moreover, when using it for wind power generation, excessive high-speed rotation can be suppressed and the generator can be protected by applying the strong wind to the impeller in this way.
[0006]
In addition, the above problem is that the pair of arcuate cross-section blades provided in the impeller are each refracted inward by a hinge at a middle position in the arc direction, and are in a closed state in which both ends in the arc direction are close to each other. It can also be solved by a Savonius-type windmill characterized by being able to do so.
[0007]
In this windmill, the pair of arc-shaped cross-section blades are refracted inward and closed in a close state where both ends in the arc direction are close to each other under strong wind, thereby preventing strong winds from being damaged. Moreover, when using it for wind power generation, an excessively high-speed rotation can be suppressed and an electric generator can be protected because an impeller makes a strong wind in this way.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0009]
The Savonius-type windmill according to the first embodiment shown in FIG. 1 (a) is used for wind power generation. Reference numeral 1 denotes an impeller, which is rotatably held by a frame (not shown). 2, the generated electricity is stored in the power storage unit 9.
[0010]
The impeller 1 includes a pair of arcuate cross-section blades 3 and 3 and upper and lower disks 4 and 4. As shown in FIGS. 1 (B-1) and (B-2), the pair of rails 5 and 5 extend on both sides of the rotation center position 6 in parallel with each other on the upper and lower disks 4 and 4, respectively. In addition, pins 7... Project from both ends in the circumferential direction at the upper and lower ends of each arcuate section blade 3, 3, and the pins 7 of one arcuate section blade 3 rotate. The pin 7 of the other arcuate cross-section blade 3 is engaged with the other rail 5 sandwiching the rotation center position 6 to engage with one rail 5 sandwiching the center position 6. Each of the arc-shaped cross-section blades 3 and 3 can go back and forth between an eccentric position where the impeller 1 is rotated by receiving wind force and a rotation center position 6 side where the rotation is not caused or suppressed by the wind force. Has been made.
[0011]
The pair of arcuate cross-section blades 3 and 3 are provided with driving means (not shown) that hold the pair of arcuate cross-section blades 3 and 3 in the eccentric position, move them to the rotation center position 6 side, and hold them on the rotation center position 6 side. ing. As this driving means, for example, a structure in which a rod of a cylinder as a driving means fixed to the disk 4 side is connected to the pin 7 of the arcuate section blade 3 can be used.
[0012]
In such a case, the driving means such as the cylinder as described above is controlled manually by operating an operation unit such as a switch, or the wind speed and the rotational speed of the impeller 1 are detected by a detection sensor, and the control means detects the sensor. It may be configured to automatically control based on the detection signal.
[0013]
Alternatively, the pair of arcuate cross-section blades 3 and 3 are normally held in an eccentric position by a biasing force by a biasing means such as a spring during normal times, and the rotational centrifugal force of the impeller 1 or hydrodynamic force due to wind force during strong winds. As a result, the arc-shaped cross-section blades 3 and 3 move from the eccentric position to the rotation center position side, and the arc-shaped cross-section blades 3 and 3 are held on the rotation center position 6 side by the balance of these forces and the lock mechanism. A mechanism may be used to ensure that Of course, not limited to these, various mechanisms may be used.
[0014]
In the above Savonius type windmill, as shown in FIG. 2 (a), when the normal wind W1 is blowing, the pair of arc-shaped cross-section blades 3 and 3 are held in the eccentric position, thereby the impeller. 1 rotates efficiently, and the power generation unit 2 shown in FIG. In the strong wind W2, as shown in FIG. 2 (b), the pair of arcuate cross-section blades 3 and 3 are moved to the rotation center position 6 side and are held in that position, so that the strong wind is avoided and the blade The rotation of the car 1 is also suppressed and damage is prevented. This also suppresses the rotation of the rotor of the power generation unit 2 during strong winds and protects the power generation unit 2.
[0015]
The impeller 1 used in the Savonius-type windmill of the second embodiment shown in FIG. 3 has two arcuate cross-section blades 3 and 3 each having two divided blade members 3a and 3a at one central portion in the arc direction. These divided blade members 3a, 3a are hinged 3b, and can thereby be refracted inward from an arcuate open state to a closed state in which both ends in the arc direction are close to each other. It is made like that. In order to realize this operation, the upper and lower discs 4, 4 are provided with rails 5 ..., and the pins 7 ... of the respective arc-shaped cross-section blades 3, 3 are movably engaged with the rails 5 .... .
[0016]
In this embodiment, each arcuate cross-section blade 3 is provided with a biasing means such as a spring for holding them in an open state, and a parachute 8 as a blade closing means is provided between the divided blade materials 3a and 3a. Is provided. The parachute 8 does not open only when normal wind acts on the concave surface of the arc-shaped cross-section blade 3 but opens only when wind pressure due to the strong wind acts. An inductive force is generated for closing the urging force by the urging means.
[0017]
In the above Savonius type windmill, as shown in FIG. 4 (a), when the normal wind W1 is blowing, the pair of arcuate cross-section blades 3 and 3 are held in an arcuate state. Thus, the impeller 1 rotates efficiently, and the power generation unit also generates power efficiently. 4 (b), the parachute 8 is opened by the wind pressure, and the right and left divided blade members 3a, 3a are refracted inward by the closing induction force, and the arc-shaped cross-section blade 3, as shown in FIG. 3 is closed. As a result, strong winds are displaced, rotation of the impeller 1 is also suppressed, and damage is prevented. This also suppresses the rotation of the rotor of the power generation unit during strong winds and protects the power generation unit.
[0018]
In the type of the second embodiment, the pair of arc-shaped cross-section blades 3 and 3 are normally held open by a biasing force by a biasing means such as a spring, and the arc-shaped cross-section blades 3 and 3 are A mechanism that is changed from an open state to a closed state by the rotational centrifugal force or other hydrodynamic force by wind force, etc., and is held in the closed state by the balance of these forces or a lock mechanism. Etc. may be used.
[0019]
Of course, a drive means such as a cylinder for turning each of the arc-shaped cross-section blades 3 and 3 from the open state to the closed state is provided, and this drive means is controlled manually, or the wind speed and the rotational speed of the impeller 1 are detected. Detection may be performed by a sensor, and control means may be controlled automatically based on a detection signal from the sensor, and there is no particular limitation on the means for changing from an open state to a closed state.
[0020]
Further, each arcuate section blade 3, 3 only has to be refracted by the hinge coupling portion 3 b in a strong wind and the both ends in the circumferential direction are in an approaching state. There are no particular restrictions on the orientation of the. In addition, each arcuate section blade may be hinged at two or more positions in the circumferential direction.
[0021]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, although the Savonius type windmill of the present invention is used for wind power generation in the above embodiment, it may be used for applications other than wind power generation.
[0022]
【The invention's effect】
Since the present invention is as described above, it is possible to dodge it without being damaged even under strong winds, and it is possible to protect the generator even when used for wind power generation.
[Brief description of the drawings]
FIG. 1 shows a Savonius-type wind turbine according to a first embodiment, in which FIG. (A) is a side view, FIG. (B-1) is an exploded perspective view showing an upper part of the impeller, and (B-2) is a blade. It is a disassembled perspective view which shows the lower part of a vehicle.
FIG. 2A is a plan sectional view of an impeller when a normal wind is blowing, and FIG. 2B is a plan sectional view of the impeller during a strong wind.
FIG. 3 is an exploded perspective view of an impeller showing a Savonius-type windmill according to a second embodiment.
FIG. 4A is a plan sectional view of the impeller when normal wind is blowing, and FIG. 4B is a plan sectional view of the impeller when the wind is strong.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Impeller 2 ... Power generation part 3 ... Arc-shaped cross-section blade | wing 3b ... Hinge 6 ... Rotation center position

Claims (2)

羽根車（１）に備えられた対の円弧状断面羽根（３）（３）がそれぞれ、その円弧方向の中間部位置において複数の分割羽根材（３ａ）（３ａ）に分割され、これら分割羽根材（３ａ）（３ａ）がヒンジ結合（３ｂ）されて、円弧状に開いた状態から、内向きに屈折し円弧方向の両端が接近した閉じ状態になることができるようになされていることを特徴とするサボニウス型風車。A pair of arc-shaped cross-section blades (3) and (3) provided in the impeller (1) are each divided into a plurality of divided blade members (3a) and (3a) at intermediate positions in the arc direction. The materials (3a) and (3a) are hinge-coupled (3b) , so that they can be refracted inward and closed with both ends in the arc direction approaching from the arc-open state. Characteristic Savonius type windmill. 前記各円弧状断面羽根（３）（３）の分割羽根材（３ａ）（３ａ）を開き状態に保持する付勢手段が備えられると共に、分割羽根材（３ａ）（３ａ）間にパラシュート（８）が備えられ、該パラシュート（８）は、風力が一定限度を越えたと開き、各円弧状断面羽根（３）（３）をそれぞれ付勢手段による付勢力に抗して閉じ状態にする誘導力を生じさせるようになされている請求項１に記載のサボニウス型風車。A biasing means for holding the divided blade members (3a) (3a) of the arc-shaped cross-section blades (3) (3) in an open state is provided, and a parachute (8) is provided between the divided blade members (3a) (3a). The parachute (8) opens when the wind force exceeds a certain limit, and the induction force that closes each arcuate cross-section blade (3) (3) against the urging force by the urging means, respectively. The Savonius type windmill according to claim 1, wherein
JP2002222276A 2002-07-31 2002-07-31 Savonius type windmill Expired - Fee Related JP4090810B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101723108B1 (en) * 2015-10-01 2017-04-05 연세대학교 원주산학협력단 Savonius-type vertical axis Wind Turbine including a device for controlling the gap width between turbine blades

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Publication number Priority date Publication date Assignee Title
ES2264859B1 (en) * 2004-07-30 2007-08-01 Joaquin Siguenza Aguiar "WIND TURBINE, SOLAR, AND PERFECTED HYDRAULICS".
TWI425145B (en) * 2010-11-15 2014-02-01 Hiwin Mikrosystem Corp Vertical wind power generator with automatically retractable blades
DE102012014627A1 (en) 2012-07-17 2014-02-06 Christiane Bareiß Segovia Conical rotor for energy generation for charging batteries in transport with electric and hybrid drive, has round base plate, which has top profile with three alternate shafts and three troughs, where base plate is opened at its center

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101723108B1 (en) * 2015-10-01 2017-04-05 연세대학교 원주산학협력단 Savonius-type vertical axis Wind Turbine including a device for controlling the gap width between turbine blades

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