JP2015108364A - Savonius wind mill - Google Patents
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- JP2015108364A JP2015108364A JP2013263036A JP2013263036A JP2015108364A JP 2015108364 A JP2015108364 A JP 2015108364A JP 2013263036 A JP2013263036 A JP 2013263036A JP 2013263036 A JP2013263036 A JP 2013263036A JP 2015108364 A JP2015108364 A JP 2015108364A
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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
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Abstract
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本発明は各種動力装置に利用されるサボニウス型風車の受風エネルギーの動力変換効率と起動性の向上に関する。 The present invention relates to improvement of power conversion efficiency and startability of wind-receiving energy of a Savonius type wind turbine used for various power devices.
平均風速が低く風向の変化が著しい地域では、それに即した風車として垂直軸型風車が採用される。とりわけ低風速域での稼働率が高く構造が単純なサボニウス型風車が注目されているが、受風エネルギーに対し、動力変換効率と起動性が悪い欠点がある。従来、風車の受風面積つまり、風車の直径や軸方向の長さが決まっている場合には、効果的対策がなく、風車の更なる起動性と動力変換効率の向上が要求されている。本発明は、上記の事情に鑑みて、動力変換効率と起動性が向上するサボニウス型風車を安価で提供することを目的としている。 In areas where the average wind speed is low and the wind direction changes significantly, vertical wind turbines are adopted as wind turbines. In particular, Savonius type wind turbines with a high operating rate in a low wind speed region and a simple structure are attracting attention. However, there are drawbacks in that power conversion efficiency and startability are poor with respect to wind energy. Conventionally, when the wind receiving area of the windmill, that is, the diameter of the windmill and the length in the axial direction is determined, there is no effective measure, and further improvement in the startability and power conversion efficiency of the windmill is required. In view of the above circumstances, an object of the present invention is to provide a Savonius type windmill with improved power conversion efficiency and startability at low cost.
従来、風車の受風面積つまり、風車の直径や軸方向の長さが決まっている場合には効果的対策がないという概念がある。
受風エネルギーの動力変換効率と起動性の向上の対策例として、
風車本体外周に集風板を設置する。
参考文献［特許公開２００６−１５２９３８］
湾曲羽根にひねりを加える。
参考文献［特許公開２００８−１９７６２］
などがある。本発明はサボニウス型風車の湾曲羽根の内端位置の最適化で風車の直径や軸方向の長さを変えず、付加装置の設置や湾曲羽根の特別な形状加工などを施さず、動力変換効率と起動性の向上を安価で提供することを可能とするものである。Conventionally, there is a concept that there is no effective measure when the wind receiving area of the windmill, that is, the diameter of the windmill or the length in the axial direction is determined.
As an example of measures to improve the power conversion efficiency and startability of wind energy,
A wind collecting plate is installed on the outer periphery of the wind turbine body.
Reference [Patent Publication 2006-152938]
Add a twist to the curved blade.
Reference [Patent Publication 2008-19762]
and so on. The present invention optimizes the inner end position of the curved blades of the Savonius-type windmill, does not change the diameter and axial length of the windmill, installs additional devices, does not perform special shape processing of the curved blades, etc. It is possible to provide an improvement in startability at a low cost.
中心軸（２）周りに回転自在に支持された円盤状の半径Ｒの回転板（１１‐１）（１１‐２）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚以上の湾曲羽根たとえば（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は、外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数＋０度＜３０度）の回転板円周に向かう直線（ｂ）との交点とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。
以上の形状を特長とする 風車本体（１）を提供する。
その理由は以下のとおりである。すなわち、従来のサボニウス型風車３翼型以上の風車は構造上風車内部に入るほど風の導入面積が絞られ、風の乱流が起こる。結果サボニウス型風車の特長である風上から抗力を受ける湾曲羽根と対向する湾曲羽根に充分な風速と風量を到達させることができずに受風エネルギーの動力変換効率が低く起動性も低い。
以上の欠点を補うために、［請求項０００１］の形状とした。
風車は羽根の受風面積の２乗、風速の３乗に比例し出力が増すことから、従来、風車の受風面積つまり、風車の直径や軸方向の長さが決まっている場合には、効率向上の効果的対策がない、という概念を根本から見直した。よって本発明は１枚ずつの湾曲羽根の受風面積は減るものの、風上から見てどの回転角度でも風を積極的に風車本体内に導入することにより、エネルギーの高い風を、風上から抗力を受ける湾曲羽根と対向する湾曲羽根にも大量に導くことにより、総合効力が向上する。
本発明は、以上のような構成よりなる風車本体である。Rotates at a constant pitch in the circumferential direction of the rotating plate between two disk-shaped rotating plates (11-1) and (11-2) with a radius R supported so as to be rotatable around the central axis (2). It has three or more curved blades standing up in the plate, for example (12-1) (12-2) (12-3), and the circular arc of the curved blade is located at an arbitrary end point on the circumference of the rotating plate. The end point close to the central axis is the inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as a reference line and the central axis as a base point of an angle formed by two straight lines ( It is set as the intersection with the straight line (b) that goes to the circumference of the rotating plate of 360 degrees ÷ the number of curved blades + 0 degrees <30 degrees.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
A windmill body (1) characterized by the above shape is provided.
The reason is as follows. That is, in the conventional wind turbine of the Savonius type wind turbine having three blades or more, the introduction area of the wind is narrowed so that the wind turbine enters the inside of the wind turbine due to the structure, and wind turbulence occurs. As a result, sufficient wind speed and air volume cannot reach the curved blades facing the curved blades that receive drag from the windward, which is a feature of the Savonius type windmill, and the power conversion efficiency of received wind energy is low and the startability is also low.
In order to compensate for the above drawbacks, the shape of [Claim 0001] is adopted.
Since the output of a windmill is proportional to the square of the wind receiving area of the blades and the cube of the wind speed, the wind receiving area of the windmill, that is, when the diameter of the windmill and the length in the axial direction are determined, The concept that there is no effective measure to improve efficiency was fundamentally reviewed. Therefore, the present invention reduces the wind receiving area of each curved blade, but by introducing wind actively into the wind turbine body at any rotation angle as viewed from the windward, high energy wind is The total efficacy is improved by guiding a large amount to the curved blades opposed to the curved blades subjected to the drag.
This invention is a windmill main body which consists of the above structures.
図１は従来のサボニウス型風車３翼型と本発明のサボニウス型風車３翼型を例に概観の特長および名称を説明した図である。
（注．以後は従来のサボニウス型風車と区別した比較説明の為に便宜的に本発明の風車をサボニウス改型風車と称する。）
図２はサボニウス型風車３翼型とサボニウス改型風車３翼型を横断面図を上側から見てに湾曲羽根内端位置を説明した図である。
サボニウス型風車３翼型は、中心軸（２’）周りに回転自在に支持された円盤状の半径Ｒ’の回転板（１１‐１’）（１１‐２’）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の湾曲羽根（１２‐１’）（１２‐２’）（１２‐３’）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は、外端と中心軸を通る直線（ａ’）上にある。
ただしＲ’＞ｒ’＞Ｒ’／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし１２０度ずつ回転した位置とする。
以上の形状を特長とする風車本体。
サボニウス改型風車３翼型は、中心軸（２）周りに回転自在に支持された円盤状の半径Ｒの回転板（１１‐１）（１１‐２）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚以上の湾曲羽根たとえば（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数＋０度＜３０度）の角度で回転板円周に向かう直線（ｂ）との交点とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつに回転した位置とする。
以上の形状を特長とする 風車本体。
図３はサボニウス型風車３翼型とサボニウス改型風車３翼型の風車本体内部を通過する風の流れを観測したものである。サボニウス改型風車３翼型はサボニウス型風車３翼型と比較し、１枚ずつの湾曲羽根の受風面積は減るものの、正面からの風を積極的に風車本体内に導入することによりエネルギーの高い風を、風上から抗力を受ける湾曲羽根と対向する湾曲羽根にも大量に導き、総合効力と起動性が向上する。FIG. 1 is a diagram for explaining the features and names of an overview of a conventional Savonius type windmill three-blade type and a Savonius type windmill three-wing type of the present invention.
(Note. For the sake of convenience, the wind turbine of the present invention will be referred to as a Savonius modified wind turbine for the sake of convenience in comparison with the conventional Savonius type wind turbine.)
FIG. 2 is a view for explaining the inner end position of the curved blades when the cross-sectional view of the Savonius-type wind turbine 3 blade type and the Savonius modified wind turbine 3 blade type is viewed from the upper side.
The Savonius type windmill three-blade type is between the two disk-shaped rotating plates (11-1 ′) and (11-2 ′) having a radius R ′ supported so as to be rotatable around the central axis (2 ′). The curved plate has three curved blades (12-1 ′), (12-2 ′) and (12-3 ′) which are erected in the rotational plate at an equal pitch in the circumferential direction of the curved plate. The arbitrary end point on the circumference of the rotating plate is the outer end, and the end point close to the central axis is the inner end.
The inner end position is on a straight line (a ′) passing through the outer end and the central axis.
However, R ′> r ′> R ′ / 2
The other curved blades have the same shape as the curved blades and are rotated by 120 degrees with the central axis as a reference point.
A windmill body featuring the above shape.
The Savonius modified windmill three-blade type rotates between the two disk-shaped rotating plates (11-1) and (11-2) with a radius R supported rotatably around the central axis (2). It has three or more curved blades, for example, (12-1), (12-2), and (12-3), standing in the rotating plate at equal pitches in the circumferential direction of the plate, An arbitrary end point on the circumference is an outer end, and an end point close to the central axis is an inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as the reference line and the central axis as the base point of the angle formed by the two straight lines (360). Let it be the intersection with the straight line (b) toward the circumference of the rotating plate at an angle of degrees / number of curved blades + 0 degrees <30 degrees.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades and are rotated at an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
The windmill body features the above shape.
FIG. 3 shows the observation of the flow of wind passing through the inside of the wind turbine body of the Savonius-type wind turbine 3 blade type and the Savonius modified wind turbine 3 blade type. Compared to the Savonius-type wind turbine 3-wing type, the Savonius-modified wind turbine 3-wing type reduces the wind receiving area of the curved blades one by one. High winds are also led in large quantities to the curved blades facing the curved blades that receive drag from the windward, improving overall effectiveness and startability.
サボニウス改型風車３翼型とサボニウス型風車３翼型の模型を作成し、性能比較試験を行なった。
サボニウス改型風車３翼型
中心軸周りに回転自在に支持された直径１００ｍｍの円盤状の回転板（１１‐１）（１１‐２）２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の高さ１１０ｍｍ幅７０ｍｍの湾曲羽根（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数＋０度＜３０度）の角度で回転板円周に向かう直線（ｂ）との交点とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする形状を特長とする風車本体。
性能比較対象
サボニウス型風車３翼型
直径１００ｍｍの中心軸周りに回転自在に支持された円盤状の回転板（１１‐１’）（１１‐２’）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の高さ１１０ｍｍ幅１００ｍｍの湾曲羽根（１２‐１’）（１２‐２’）（１２‐３’）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端の位置は、外端と中心軸を通る直線（ａ’）上にある。
ただしＲ’＞ｒ’＞Ｒ’／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし１２０度ずつ回転した位置とする。湾曲羽根の円弧の半径ｒ’はサボニウス改型風車ｒと同じ。
測定方法
扇風機を用いた測定。計測位置は扇風機正面中央、羽根中心部より羽根下端の間に統一。風車本体との距離は防護網から１ｃｍ、１１ｃｍに設定。
一定の風速、風量下で各々風車本体回転軸に小型発電モーター軸を接続し、モーターの両リード線間に∞Ω、１００Ω、１０Ωの抵抗を接続し、電圧を測定。
Savonius modified wind turbine 3-wing type Between two disk-shaped rotating plates (11-1) (11-2) with a diameter of 100 mm supported so as to be rotatable around the central axis, etc. in the circumferential direction of the rotating plate, etc. It has three curved blades (12-1), (12-2), and (12-3) that are erected in the rotating plate at a pitch of 110 mm in height and 70 mm in width, and the arc of the curved blades is the circumference of the rotating plate The upper arbitrary end point is the outer end, and the end point close to the central axis is the inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as the reference line and the central axis as the base point of the angle formed by the two straight lines (360). Let it be the intersection with the straight line (b) toward the circumference of the rotating plate at an angle of degrees / number of curved blades + 0 degrees <30 degrees.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades described above, and the wind turbine body is characterized by a shape that is rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
Performance comparison object Savonius type wind turbine 3 blade type This rotating plate is between two disc-shaped rotating plates (11-1 ′) and (11-2 ′) supported rotatably around a central axis of 100 mm in diameter. Have three curved blades (12-1 ′), (12-2 ′), and (12-3 ′) having a height of 110 mm and a width of 100 mm that are erected in the rotating plate at an equal pitch in the circumferential direction of the curved blades. In the arc, an arbitrary end point on the circumference of the rotating plate is an outer end, and an end point close to the central axis is an inner end.
The position of the inner end is on a straight line (a ′) passing through the outer end and the central axis.
However, R ′> r ′> R ′ / 2
The other curved blades have the same shape as the curved blades and are rotated by 120 degrees with the central axis as a reference point. The radius r ′ of the curved blade arc is the same as that of the Savonius modified windmill r.
Measurement method Measurement using a fan. The measurement position is unified between the front center of the fan and between the center of the blade and the lower end of the blade. The distance from the windmill body is set to 1cm and 11cm from the protective net.
A small generator motor shaft is connected to the rotating shaft of the wind turbine body at a constant wind speed and volume, and ∞Ω, 100Ω, and 10Ω resistors are connected between the motor lead wires, and the voltage is measured.
本発明にかかる［請求項１］のとおり設計されたサボニウス改型風車は、風の入り口から出口に至る過程で風車全体で動力変換効率と起動性が向上する構造を有し風向きに影響されず安定した出力を得られる。湾曲羽根内端位置の最適化で風車の直径や軸方向の長さを変えず、付加装置の設置や湾曲羽根の特別な形状加工などを施さず、構造の単純化がはかれ、生産が容易で低コスト化を実現する。プロペラ型風力発電機が稼動する風速と一定の風向が得られる地域は限られている。サボニウス改型風車はプロペラ型発電風車と比較し動力変換効率は劣るものの稼働率は大変高く、プロペラ型発電風車が起動しない風速の比較的低く風向も変化する大半の地域での稼動が可能である。また、サボニウス型風車が起動しない風速での稼動も可能となり、安価で生産が容易な構造から、自然エネルギー創出のため幅広い需要が見込まれる。 The Savonius modified wind turbine designed as in claim 1 according to the present invention has a structure that improves power conversion efficiency and startability in the entire wind turbine in the process from the wind entrance to the exit and is not affected by the wind direction. Stable output can be obtained. Optimization of the curved blade inner end position does not change the windmill diameter or axial length, and does not require additional equipment installation or special shape processing of the curved blade, simplifying the structure and facilitating production To achieve low cost. There are limited areas where propeller-type wind power generators operate and where wind speed and constant wind direction can be obtained. Although the power conversion efficiency of the Savonius modified wind turbine is inferior to that of the propeller-type generator wind turbine, the operation rate is very high. . In addition, the Savonius wind turbine can be operated at wind speeds that do not start, and a wide range of demand is expected to create natural energy because it is inexpensive and easy to produce.
本発明のサボニウス改型風車は、特に限定されないが、例えば小型風力発電装置の動力部、揚水装置の動力部と流水型小型水力発電装置の動力部として使用することができる。 The Savonius modified windmill of the present invention is not particularly limited, and can be used as, for example, a power unit of a small wind power generator, a power unit of a pumping device, and a power unit of a flowing water type small hydroelectric generator.
１および１’ 風車本体
２および２’ 中心軸
１１‐１ 〜 １１‐２および１１‐１’ 〜１１‐２’ 回転板
１２‐１ 〜 １２‐３および１２‐１’ 〜１２‐３’ 湾曲羽根
ａ 外端と中心軸２を結ぶ直線
ａ’ 外端と中心軸２’を通る直線
ｂ 中心軸２から回転板円周を通る直線
ｒおよびｒ’ 湾曲羽根円弧の半径1 and 1 '
中心軸（２）周りに回転自在に支持された円盤状の半径Ｒの回転板（１１‐１）（１１‐２）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚以上の湾曲羽根たとえば（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は、外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数−０度＜３０度）の角度（α）で回転板円周を通る直線（ｂ）との交点（ｚ）とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。
以上の形状を特長とする 風車本体（１）を提供する。
その理由は以下のとおりである。すなわち、従来のサボニウス型風車３翼型以上の風車は構造上風車内部に入るほど風の導入面積が絞られ、風の乱流が起こる。結果サボニウス型風車の特長である風上から抗力を受ける湾曲羽根と対向する湾曲羽根に充分な風速と風量を到達させることができずに受風エネルギーの動力変換効率が低く起動性も低い。
以上の欠点を補うために、［請求項０００１］の形状とした。
風車は羽根の受風面積の２乗、風速の３乗に比例し出力が増すことから、従来、風車の受風面積つまり、風車の直径や軸方向の長さが決まっている場合には効率向上の効果的対策がない、という概念を根本から見直した。
よって本発明は１枚ずつの湾曲羽根の受風面積は減るものの、風上から見てどの回転角度でも風を積極的に風車本体内に導入することにより、エネルギーの高い風を、風上から抗力を受ける湾曲羽根と対向する湾曲羽根にも大量に導くことにより、総合効力が向上する。
本発明は、以上のような構成よりなる風車本体である。Rotates at a constant pitch in the circumferential direction of the rotating plate between two disk-shaped rotating plates (11-1) and (11-2) with a radius R supported so as to be rotatable around the central axis (2). It has three or more curved blades standing up in the plate, for example (12-1) (12-2) (12-3), and the circular arc of the curved blade is located at an arbitrary end point on the circumference of the rotating plate. The end point close to the central axis is the inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as a reference line and the central axis as a base point of an angle formed by two straight lines ( Let it be the intersection (z) with the straight line (b) passing through the rotating plate circumference at an angle (α) of 360 degrees ÷ number of curved blades−0 degrees <30 degrees.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
A windmill body (1) characterized by the above shape is provided.
The reason is as follows. That is, in the conventional wind turbine of the Savonius type wind turbine having three blades or more, the introduction area of the wind is narrowed so that the wind turbine enters the inside of the wind turbine due to the structure, and wind turbulence occurs. As a result, sufficient wind speed and air volume cannot reach the curved blades facing the curved blades that receive drag from the windward, which is a feature of the Savonius type windmill, and the power conversion efficiency of received wind energy is low and the startability is also low.
In order to compensate for the above drawbacks, the shape of [Claim 0001] is adopted.
Since the output of a windmill increases in proportion to the square of the wind receiving area of the blades and the cube of the wind speed, the efficiency is conventionally improved when the wind receiving area of the windmill, that is, the diameter of the windmill and the length in the axial direction are determined. The concept that there is no effective measure for improvement was fundamentally reviewed.
Therefore, the present invention reduces the wind receiving area of each curved blade, but by introducing wind actively into the wind turbine body at any rotation angle as viewed from the windward, high energy wind is The total efficacy is improved by guiding a large amount to the curved blades opposed to the curved blades subjected to the drag.
This invention is a windmill main body which consists of the above structures.
図１は従来のサボニウス型風車３翼型と本発明のサボニウス型風車３翼型を例に概観の特長および名称を説明した図である。
（注．以後は従来のサボニウス型風車と区別した比較説明の為に便宜的に本発明の風車をサボニウス改型風車と称する。）
図２はサボニウス型風車３翼型とサボニウス改型風車３翼型の横断面図を上側から見て湾曲羽根内端位置を説明した図である。
サボニウス型風車３翼型は、中心軸（２’）周りに回転自在に支持された円盤状の半径Ｒ’の回転板（１１‐１’）（１１‐２’）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の湾曲羽根（１２‐１’）（１２‐２’）（１２‐３’）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は、外端と中心軸を通る直線（ａ′）上にある。
ただしＲ’＞ｒ’＞Ｒ′／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。
以上の形状を特長とする風車本体。
サボニウス改型風車３翼型は、中心軸（２）周りに回転自在に支持された円盤状の半径Ｒの回転板（１１‐１）（１１‐２）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚以上の湾曲羽根たとえば（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数−０度＜３０度）の角度（α）で回転板円周を通る直線（ｂ）との交点（ｚ）とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。
以上の形状を特長とする 風車本体。
図３はサボニウス型風車３翼型とサボニウス改型風車３翼型の風車本体内部を通過する風の流れを観測したものである。サボニウス改型風車３翼型はサボニウス型風車３翼型と比較し、１枚ずつの湾曲羽根の受風面積は減るものの、正面からの風を積極的に風車本体内に導入することによりエネルギーの高い風を、風上から抗力を受ける湾曲羽根と対向する湾曲羽根にも大量に導き、総合効力と起動性が向上する。FIG. 1 is a diagram for explaining the features and names of an overview of a conventional Savonius type windmill three-blade type and a Savonius type windmill three-wing type of the present invention.
(Note. For the sake of convenience, the wind turbine of the present invention will be referred to as a Savonius modified wind turbine for the sake of convenience in comparison with the conventional Savonius type wind turbine.)
Figure 2 is a diagram for explaining a curved vane inner end position as viewed a cross-sectional view of Savonius windmill 3 aerofoil and Savonius reforming windmill 3 aerofoil from above.
The Savonius type windmill three-blade type is between the two disk-shaped rotating plates (11-1 ′) and (11-2 ′) having a radius R ′ supported so as to be rotatable around the central axis (2 ′). The curved plate has three curved blades (12-1 ′), (12-2 ′) and (12-3 ′) which are erected in the rotational plate at an equal pitch in the circumferential direction of the curved plate. The arbitrary end point on the circumference of the rotating plate is the outer end, and the end point close to the central axis is the inner end.
The inner end position is on a straight line (a ′) passing through the outer end and the central axis.
However, R ′> r ′> R ′ / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
A windmill body featuring the above shape.
The Savonius modified windmill three-blade type rotates between the two disk-shaped rotating plates (11-1) and (11-2) with a radius R supported rotatably around the central axis (2). It has three or more curved blades, for example, (12-1), (12-2), and (12-3), standing in the rotating plate at equal pitches in the circumferential direction of the plate, An arbitrary end point on the circumference is an outer end, and an end point close to the central axis is an inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as the reference line and the central axis as the base point of the angle formed by the two straight lines (360). An intersection (z) with a straight line (b) passing through the rotation plate circumference at an angle (α) of degrees ÷ number of curved blades−0 degree <30 degrees.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
The windmill body features the above shape.
FIG. 3 shows the observation of the flow of wind passing through the inside of the wind turbine body of the Savonius-type wind turbine 3 blade type and the Savonius modified wind turbine 3 blade type. Compared to the Savonius-type wind turbine 3-wing type, the Savonius-modified wind turbine 3-wing type reduces the wind receiving area of the curved blades one by one. High winds are also led in large quantities to the curved blades facing the curved blades that receive drag from the windward, improving overall effectiveness and startability.
サボニウス改型風車３翼型とサボニウス型風車３翼型の模型を作成し性能比較試験を行なった。
サボニウス改型風車３翼型
中心軸周りに回転自在に支持された直径１００ｍｍの円盤状の回転板（１１‐１）（１２‐２）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の高さ１１０ｍｍ幅７０ｍｍの湾曲羽根（１２‐１）（１２‐２）（１２‐３）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端位置は外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数−０度＜３０度）の角度（α）で回転板円周を通る直線（ｂ）との交点（ｚ）とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする形状を特徴とする風車本体。
性能比較対象
サボニウス型風車３翼型
直径１００ｍｍの中心軸周りに回転自在に支持された円盤状の回転板（１１‐１’）（１２‐２’）の２枚との間で、この回転板の周方向に等ピッチで回転板内に立設された３枚の高さ１１０ｍｍ幅１００ｍｍの湾曲羽根（１２‐１’）（１２‐２’）（１２‐３’）を有し、湾曲羽根の円弧は回転板の円周上の任意端点を外端、中心軸に近い端点を内端とする。
内端の位置は、外端と中心軸を通る直線（ａ’）上にある。
ただしＲ’＞ｒ’＞Ｒ′／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。湾曲羽根の円弧の半径ｒ’はサボニウス改型風車ｒと同じ。
測定方法
扇風機を用いた測定。計測位置は扇風機正面中央、羽根中心部より羽根下端の間に統一。風車本体との距離は防護網から１ｃｍ、１１ｃｍに設定。一定の風速、風量下で各々風車本体回転軸に小型発電モーター軸を接続し、モーターの両リード線間に∞Ω、１００Ω、１０Ωの抵抗を接続し、電圧を測定。
Savonius modified wind turbine 3-wing type Between the two disk-shaped rotating plates (11-1) and (12-2) with a diameter of 100 mm supported so as to be rotatable around the central axis, in the circumferential direction of this rotating plate It has three curved blades (12-1), (12-2), and (12-3) that are erected in the rotating plate at an equal pitch and have a height of 110 mm and a width of 70 mm. An arbitrary end point on the circumference is an outer end, and an end point close to the central axis is an inner end.
The inner end position is an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis, with the straight line (a) as the reference line and the central axis as the base point of the angle formed by the two straight lines (360). An intersection (z) with a straight line (b) passing through the rotation plate circumference at an angle (α) of degrees ÷ number of curved blades−0 degree <30 degrees.
However, R>r> R / 2
The other curved blade has the same shape as the curved blade, and has a shape in which the central axis is rotated at an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
Performance comparison object Savonius type windmill 3 blade type This rotating plate between two disc-shaped rotating plates (11-1 ') (12-2') supported rotatably around the central axis of diameter 100mm Have three curved blades (12-1 ′), (12-2 ′), and (12-3 ′) having a height of 110 mm and a width of 100 mm that are erected in the rotating plate at an equal pitch in the circumferential direction of the curved blades. In the arc, an arbitrary end point on the circumference of the rotating plate is an outer end, and an end point close to the central axis is an inner end.
The position of the inner end is on a straight line (a ′) passing through the outer end and the central axis.
However, R ′> r ′> R ′ / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point. The radius r ′ of the curved blade arc is the same as that of the Savonius modified windmill r.
Measurement method Measurement using a fan. The measurement position is unified between the front center of the fan and between the center of the blade and the bottom of the blade. The distance from the windmill body is set to 1cm and 11cm from the protective net. A small generator motor shaft is connected to the rotating shaft of the wind turbine body at a constant wind speed and volume, and ∞Ω, 100Ω, and 10Ω resistors are connected between the motor lead wires, and the voltage is measured.
１および１’ 風車本体
２および２’ 中心軸
１１‐１ 〜 １１‐２および１１‐１’ 〜 １１‐２′ 回転板
１２‐１ 〜 １２‐３および１２‐１’ 〜 １２‐３′ 湾曲羽根
ａ 外端と中心軸２を結ぶ直線
ａ′ 外端と中心軸２’を通る直線
ｂ 中心軸２から回転板円周を通る直線
ＲおよびＲ′ 回転板の半径
ｒおよびｒ’ 湾曲羽根円弧の半径
α 直線ａとｂがなす角度
ｚ 湾曲羽根内端位置 1 and 1 'windmill
R and R 'radius of rotating plate r and r' radius of curved blade arc
α Angle formed by straight lines a and b
z Curved blade inner edge position
Claims (1)
内端の位置は、外端と中心軸を結ぶ直線（ａ）上に中心点がある半径ｒの円弧が、直線（ａ）を基準線とし、中心軸を２直線がなす角度の基点とする（３６０度÷湾曲羽根数＋０度＜３０度）の回転板円周に向かう直線（ｂ）との交点とする。
ただしＲ＞ｒ＞Ｒ／２
他の湾曲羽根は、上記湾曲羽根と同形状を成し中心軸を基準点とし（３６０度÷湾曲羽根数）の角度ずつ回転した位置とする。
以上の形状を特長とする 風車本体（１）。Rotates at a constant pitch in the circumferential direction of the rotating plate between two disk-shaped rotating plates (11-1) and (11-2) with a radius R supported so as to be rotatable around the central axis (2). It has three or more curved blades standing up in the plate, for example (12-1) (12-2) (12-3), and the circular arc of the curved blade is located at an arbitrary end point on the circumference of the rotating plate. The end point close to the central axis is the inner end.
The position of the inner end is such that an arc having a radius r having a center point on the straight line (a) connecting the outer end and the central axis is defined by using the straight line (a) as a reference line and the central axis as a base point of an angle formed by two straight lines. The intersection point with the straight line (b) (360 degrees ÷ the number of curved blades + 0 degrees <30 degrees) toward the circumference of the rotating plate.
However, R>r> R / 2
The other curved blades have the same shape as the curved blades and are rotated by an angle of (360 degrees ÷ number of curved blades) with the central axis as a reference point.
Wind turbine body (1) featuring the above shape.
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| JP2013263036A JP2015108364A (en) | 2013-12-03 | 2013-12-03 | Savonius wind mill |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006657A (en) * | 2015-07-29 | 2015-10-28 | 厦门大学 | Fractal recursion control boomerang single-sided left-handed material |
| JP2017078336A (en) * | 2015-10-19 | 2017-04-27 | 真一郎 小林 | Wind power generation automobile |
| CN108138744A (en) * | 2016-05-04 | 2018-06-08 | 图博萨姆公司 | Savonius rotor, rotor module, its device and application |
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| WO2012177111A2 (en) * | 2011-06-24 | 2012-12-27 | Université Hassan Ii - Casablanca | Convertible, self-adjusting, vertical-axis wind turbine combining savonius and darrieus configurations, and having a composite blade system |
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| JPH06323237A (en) * | 1993-05-12 | 1994-11-22 | Oval Corp | Savonius windmill |
| JP2002310057A (en) * | 2000-09-22 | 2002-10-23 | Omoto Masako | Blade of wind mill for wind power generation and unit and apparatus using it |
| JP2007239631A (en) * | 2006-03-09 | 2007-09-20 | Matsushita Electric Ind Co Ltd | Windmill |
| JP2011064169A (en) * | 2009-09-18 | 2011-03-31 | Seiichi Futaboshi | Vertical-rotation-axis wind turbine and wind power generation device using the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006657A (en) * | 2015-07-29 | 2015-10-28 | 厦门大学 | Fractal recursion control boomerang single-sided left-handed material |
| CN105006657B (en) * | 2015-07-29 | 2017-11-10 | 厦门大学 | A kind of band divides the Cyclic dart type one side LHM structure of shape recursion control |
| JP2017078336A (en) * | 2015-10-19 | 2017-04-27 | 真一郎 小林 | Wind power generation automobile |
| CN108138744A (en) * | 2016-05-04 | 2018-06-08 | 图博萨姆公司 | Savonius rotor, rotor module, its device and application |
| CN108138744B (en) * | 2016-05-04 | 2021-10-22 | 图博萨姆公司 | Savonius rotor, rotor module, device and application thereof |
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