JP2021088953A - Wind turbine - Google Patents

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JP2021088953A
JP2021088953A JP2019219548A JP2019219548A JP2021088953A JP 2021088953 A JP2021088953 A JP 2021088953A JP 2019219548 A JP2019219548 A JP 2019219548A JP 2019219548 A JP2019219548 A JP 2019219548A JP 2021088953 A JP2021088953 A JP 2021088953A
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movable wing
vertical
vertical rotation
pressure receiving
horizontal
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後藤　正
Tadashi Goto
正 後藤
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Goto Co Ltd
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Goto 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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Abstract

To reduce vibrations during rotations.SOLUTION: A wind turbine includes: a first vertical rotary shaft 11; a second vertical rotary shaft 12 supported by the first vertical rotary shaft 11 so as to coaxially rotate with the first vertical rotary shaft 11; a plurality of first horizontal shafts 13 radially extending from the periphery of the first vertical rotary shaft 11; a plurality of second horizontal shafts 14 radially extending from the periphery of the second vertical rotary shaft 12; a first moving vane 15 arranged on each of the first horizontal shafts 11 and rotatable about the horizontal shaft 11 by about 90 degrees only between a pressure receiving position where a pressure receiving surface 15a receiving wind is substantially vertical, and a pressure releasing position where the pressure receiving surface 15a is substantially horizontal; and a second moving vane 16 arranged on each of the second horizontal shafts 12 and rotatable about the second horizontal shaft 12 in contrast to the first moving vane 15.SELECTED DRAWING: Figure 1

Description

本発明は、風力の方向に垂直な回転軸をもつ風車に関するものである。 The present invention relates to a wind turbine having a rotation axis perpendicular to the direction of wind power.

風力の方向に垂直な回転軸をもつ風車として、翼が水平方向の軸まわりに可動するものが知られている（例えば特許文献１）。これによれば、エネルギー効率を向上させることができる。 As a wind turbine having a rotation axis perpendicular to the direction of the wind force, one in which the blades move around the axis in the horizontal direction is known (for example, Patent Document 1). According to this, energy efficiency can be improved.

しかし、風力の方向に垂直な回転軸をもつ風車は、回転時の振動が大きいという問題があった。 However, a wind turbine having a rotation axis perpendicular to the direction of wind power has a problem that vibration during rotation is large.

特開２０１４−１１４７２６号公報Japanese Unexamined Patent Publication No. 2014-114726

本発明は、このような事情に鑑みてなされたものであり、回転時の振動を軽減することを目的としている。 The present invention has been made in view of such circumstances, and an object of the present invention is to reduce vibration during rotation.

上記課題を解決するために、本発明に係る風車は、
第１の鉛直回転軸と、
前記第１の鉛直回転軸と同軸に回転可能となるように、前記第１の鉛直回転軸に支持された第２の鉛直回転軸と、
前記第１の鉛直回転軸の周囲から放射状に延びる複数の第１の水平軸と、
前記第２の鉛直回転軸の周囲から放射状に延びる複数の第２の水平軸と、
前記第１の水平軸のそれぞれに配設されるとともに前記第１の水平軸まわりに可動である第１の可動翼であって、風を受ける受圧面が略鉛直方向となる受圧位置と前記受圧面が略水平方向となる避圧位置との間のみを略９０度回動可能であり、風を受けて前記第１の鉛直回転軸を一定方向に回転させる第１の可動翼と、
前記第２の水平軸のそれぞれに配設されるとともに前記第２の水平軸まわりに可動である第２の可動翼であって、前記第１の可動翼とは対照的に回動可能であり、風を受けて前記第２の鉛直回転軸を前記第１の鉛直回転軸とは逆方向に回転させる第２の可動翼と、
を備えたことを要旨とする。 In order to solve the above problems, the wind turbine according to the present invention
The first vertical axis of rotation and
A second vertical rotation shaft supported by the first vertical rotation shaft so as to be rotatable coaxially with the first vertical rotation shaft.
A plurality of first horizontal axes extending radially from the periphery of the first vertical rotation axis,
A plurality of second horizontal axes extending radially from the periphery of the second vertical rotation axis,
A first movable blade that is arranged on each of the first horizontal axes and is movable around the first horizontal axis, and has a pressure receiving position and the pressure receiving surface whose pressure receiving surface that receives wind is in a substantially vertical direction. A first movable wing that can rotate about 90 degrees only between a pressure relief position where the surface is in a substantially horizontal direction and receives wind to rotate the first vertical rotation axis in a certain direction.
A second movable wing that is disposed on each of the second horizontal axes and is movable around the second horizontal axis, and is rotatable in contrast to the first movable wing. A second movable blade that receives the wind and rotates the second vertical rotation shaft in the direction opposite to the first vertical rotation shaft.
The gist is that

第１の鉛直回転軸の揺動を、第２の鉛直回転軸の揺動が打ち消すように作用するため、風車全体の振動を低減させることができる。 Since the swing of the first vertical rotating shaft acts to cancel the swing of the second vertical rotating shaft, the vibration of the entire wind turbine can be reduced.

実施形態である風車を模式的に示した説明図である。It is explanatory drawing which shows typically the wind turbine which is an embodiment. 回動規制手段を模式的に示した説明図である。It is explanatory drawing which shows typically the rotation regulation means.

以下、本発明の風車を具現化した実施形態について、図面を用いて説明するが、本発明の技術的範囲は、もちろんこれだけに限定されるものではない。なお、周知の技術に関しては、詳細な説明を省略する。また、本明細書中で特に断りなく風車について上方向又は下方向、右方向又は左方向という場合、図１を正面視した状態においての上下左右方向を指すものとする。 Hereinafter, embodiments embodying the wind turbine of the present invention will be described with reference to the drawings, but the technical scope of the present invention is, of course, not limited to this. A detailed description of the well-known technique will be omitted. Further, unless otherwise specified in the present specification, the term "upward or downward", "rightward" or "leftward" refers to the up / down / left / right direction when FIG. 1 is viewed from the front.

（実施形態）
まず、実施形態である風車１の構成について、図１および図２を参照して説明する。図１は本実施形態の風車１を模式的に示した説明図である。一部断面図で示している。図２は回動規制手段を模式的に示した説明図である。 (Embodiment)
First, the configuration of the wind turbine 1 according to the embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is an explanatory diagram schematically showing the wind turbine 1 of the present embodiment. Partially shown in cross section. FIG. 2 is an explanatory diagram schematically showing the rotation regulating means.

図１に示すように、風車１は、主に第１の鉛直回転軸１１、第２の鉛直回転軸１２、第１の水平軸１３，１３，１３，１３、第２の水平軸１４，１４，１４，１４、第１の可動翼１５，１５，１５，１５、第２の可動翼１６，１６，１６，１６、で構成される。 As shown in FIG. 1, the wind turbine 1 mainly includes a first vertical rotation shaft 11, a second vertical rotation shaft 12, a first horizontal shaft 13, 13, 13, 13, and a second horizontal shaft 14, 14. , 14, 14, the first movable wing 15, 15, 15, 15, and the second movable wing 16, 16, 16, 16.

第１の鉛直回転軸１１は、地面に設置された支持ベースＢに、アンギュラ軸受１１１、および、ラジアル軸受１１２を介して回転可能に支持されている。 The first vertical rotating shaft 11 is rotatably supported by a support base B installed on the ground via an angular bearing 111 and a radial bearing 112.

第２の鉛直回転軸１２は、第１の鉛直回転軸１１と同軸に回転可能となるように、言い換えれば、第１の鉛直回転軸１１の第１の鉛直回転軸１１の中心軸まわりに回転可能となるように、第１の鉛直回転軸１１の内部に嵌装されたアンギュラ軸受１２１、および、ラジアル軸受１２２を介して第１の鉛直回転軸１１に支持されている。なお、第１の鉛直回転軸１１と第２の鉛直回転軸１２の支持構造は、これに限らず周知の技術を用いてもよい。 The second vertical rotation shaft 12 rotates around the central axis of the first vertical rotation shaft 11 of the first vertical rotation shaft 11 so that the second vertical rotation shaft 12 can rotate coaxially with the first vertical rotation shaft 11. It is supported by the first vertical rotating shaft 11 via an angular bearing 121 fitted inside the first vertical rotating shaft 11 and a radial bearing 122 so as to be possible. The support structure of the first vertical rotation shaft 11 and the second vertical rotation shaft 12 is not limited to this, and a well-known technique may be used.

第１の水平軸１３は、本実施形態では４つであり、第１の鉛直回転軸１１の上部の周囲から放射状に延びている。 The first horizontal shaft 13 is four in the present embodiment, and extends radially from the periphery of the upper portion of the first vertical rotating shaft 11.

第２の水平軸１４は、本実施形態では４つであり、第２の鉛直回転軸１２の上部の周囲から放射状に延びている。 The second horizontal axis 14 is four in the present embodiment, and extends radially from the periphery of the upper part of the second vertical rotation axis 12.

なお、第１の水平軸１３および第２の水平軸１４の数は、４つである必要はなく、例えば、３、５、６個等でもよい。ただし、第１の水平軸１３および第２の水平軸１４の数は、同数であることが望ましい。 The number of the first horizontal axis 13 and the second horizontal axis 14 does not have to be four, and may be, for example, 3, 5, 6, or the like. However, it is desirable that the number of the first horizontal axis 13 and the number of the second horizontal axis 14 are the same.

第１の可動翼１５は、板状の翼であって、第１の水平軸１３のそれぞれに配設されるとともに第１の水平軸１３まわりに可動となっている。可動のための手段は、周知の技術である。風を受ける受圧面１５ａが略鉛直方向となる受圧位置と受圧面１５ａが略水平方向となる避圧位置との間のみを図２に示す回動規制手段１５１によって、略９０度回動可能となっている。回動規制手段１５１は、第１の鉛直回転軸に設けられた回動規制部１５１ａと、第１の可動翼１５に設けられた二つのピン１５１ｂ、１５１ｂとからなる。なお、回動規制手段１５１は、これに限らず周知の技術を用いてもよい。 The first movable wing 15 is a plate-shaped wing, which is arranged on each of the first horizontal axes 13 and is movable around the first horizontal axis 13. Means for mobility are well known techniques. Only between the pressure receiving position where the pressure receiving surface 15a receiving the wind is in the substantially vertical direction and the pressure receiving position where the pressure receiving surface 15a is in the substantially horizontal direction can be rotated by approximately 90 degrees by the rotation regulating means 151 shown in FIG. It has become. The rotation restricting means 151 includes a rotation restricting portion 151a provided on the first vertical rotation shaft, and two pins 151b and 151b provided on the first movable wing 15. The rotation regulating means 151 is not limited to this, and a well-known technique may be used.

第１の可動翼１５は、風を受けて第１の鉛直回転軸１１を一定方向（本実施形態では平面視左回り）に回転させる。なお、図１は、図面手前方向から奥方向へ風が吹いているときの状態を表したものである。 The first movable wing 15 receives the wind and rotates the first vertical rotation shaft 11 in a certain direction (counterclockwise in a plan view in the present embodiment). Note that FIG. 1 shows a state when the wind is blowing from the front direction to the back direction of the drawing.

第２の可動翼１６は、第１の可動翼１５と対象形状で、第２の水平軸１４のそれぞれに配設されるとともに第２の水平軸１４まわりに可動となっている。第１の可動翼１５と同様に、風を受ける受圧面１６ａが略鉛直方向となる受圧位置と受圧面１４ａが略水平方向となる避圧位置との間のみを回動規制手段（１６１ａと１６１ｂ、１６１ｂとからなる）によって、略９０度回動可能となっているが、これらは、第１可動翼１５、回動規制手段１５１とは対照的になっている。すなわち、第２の可動翼１６は、第１の可動翼１５とは対照的に略９０度回動可能となっている。 The second movable wing 16 has a shape symmetrical to that of the first movable wing 15, is arranged on each of the second horizontal axes 14, and is movable around the second horizontal axis 14. Similar to the first movable wing 15, the rotation restricting means (161a and 161b) is provided only between the pressure receiving position where the wind receiving pressure receiving surface 16a is substantially vertical and the pressure receiving position where the pressure receiving surface 14a is substantially horizontal. , 161b) allows it to rotate approximately 90 degrees, which is in contrast to the first movable wing 15 and the rotation restricting means 151. That is, the second movable wing 16 can rotate approximately 90 degrees in contrast to the first movable wing 15.

第２の可動翼１６は、風を受けて第２の鉛直回転軸１２を第１の鉛直回転軸１１とは逆方向（本実施形態では平面視右回り）に回転させる。 The second movable wing 16 receives the wind and rotates the second vertical rotation shaft 12 in the direction opposite to that of the first vertical rotation shaft 11 (clockwise in a plan view in the present embodiment).

第１の可動翼１５および第２の可動翼１６は、矩形または楕円（長円を含む）形状等としてもよいが、本実施形態では、図１に示すように略三角形状としている。回転が早くなると、翼の先端側の部分が抵抗になってしまう場合があるが、それを和らげることができるからである。 The first movable wing 15 and the second movable wing 16 may have a rectangular or elliptical (including oval) shape, but in the present embodiment, they have a substantially triangular shape as shown in FIG. This is because if the rotation speed is increased, the tip side portion of the wing may become a resistance, which can be alleviated.

第１の可動翼１５および第２の可動翼１６は、無風状態で受圧位置となるようになっている。具体的には、第１の可動翼１５が風を受ける受圧位置となっている状態において、第１の水平軸１３は、第１の可動翼１５の上下方向の重心の位置より上に設けられている。なお、これを満たすようにするために、第１の可動翼１５の下部に重りを取付けてもよい。これによって、無風状態（外部から力が加わらない状態）では、第１の可動翼１５の自重によって、受圧位置となるのである。ただし、上過ぎると、避圧位置に移行しにくくなるため、できるだけ重心に近く、無風状態で受圧位置となるぎりぎりの位置に水平軸１３を設けるのが望ましい。第２の可動翼１６も同様である。 The first movable wing 15 and the second movable wing 16 are in the pressure receiving position in a windless state. Specifically, in a state where the first movable wing 15 is in a pressure receiving position to receive wind, the first horizontal axis 13 is provided above the position of the center of gravity of the first movable wing 15 in the vertical direction. ing. In order to satisfy this, a weight may be attached to the lower part of the first movable wing 15. As a result, in a windless state (a state in which no force is applied from the outside), the pressure receiving position is reached by the weight of the first movable wing 15. However, if it is too high, it will be difficult to shift to the pressure relief position, so it is desirable to provide the horizontal axis 13 at a position as close to the center of gravity as possible and at the very limit of the pressure receiving position in a windless state. The same applies to the second movable wing 16.

第１の可動翼１５は、受圧位置から避圧位置への移行の際、受圧位置における第１の可動翼１５の上側が後方に回転するものと、下側が後方に回転するものが考えられ、そのどちらでも構わないが、前者の場合は上側のほうが下側よりも風が当たる面積が大きくなっており、後者の場合は下側のほうが上側よりも風が当たる面積が大きくなっている。本実施形態は前者である。第２の可動翼１６も同様である。 The first movable wing 15 may be one in which the upper side of the first movable wing 15 in the pressure receiving position rotates rearward and one in which the lower side rotates rearward when shifting from the pressure receiving position to the pressure relief position. Either of them may be used, but in the former case, the area exposed to the wind is larger on the upper side than on the lower side, and in the latter case, the area exposed to the wind is larger on the lower side than on the upper side. This embodiment is the former. The same applies to the second movable wing 16.

第１の可動翼１５および第２の可動翼１６は、完全な平板状ではなく、やや湾曲した形状であってもよい。この場合、凹状に湾曲した面を受圧面１５ａ、１６ａとしてもよい。 The first movable wing 15 and the second movable wing 16 may have a slightly curved shape instead of a perfect flat plate shape. In this case, the concavely curved surfaces may be the pressure receiving surfaces 15a and 16a.

本実施形態では、第１の可動翼１５および第２の可動翼１６は、飛行機の翼のように全体に湾曲した薄い板状とし、避圧位置となっている状態において、風上側の縁を丸く、風下側の縁を尖った形状としている。これによれば、気流が翼の表面に沿って流れるため、空気抵抗を減らすことができる。また、この場合、避圧位置となっている状態において、第１の可動翼１５および第２の可動翼１６が風上側に進もうとする揚力を生じさせるよう仰角をつけてもよい。 In the present embodiment, the first movable wing 15 and the second movable wing 16 have a thin plate shape that is curved as a whole like an airplane wing, and in a state of being in a pressure relief position, the windward edge is formed. It is round and has a sharp leeward edge. According to this, since the airflow flows along the surface of the blade, the air resistance can be reduced. Further, in this case, the elevation angle may be provided so that the first movable wing 15 and the second movable wing 16 generate lift to move upward on the windward side in the state of being in the pressure relief position.

また、第１の水平軸１３は第１の可動翼１５の内部に、第２の水平軸１４は第２の可動翼１６の内部に入り込むように構成されている。これにより、第１の水平軸１３および第２の水平軸１４による空気抵抗を減らすことができる。なお、本実施形態ではこのような構成としたが、本構成は、本発明を実施するのに必須な事項ではない。 Further, the first horizontal axis 13 is configured to enter the inside of the first movable wing 15, and the second horizontal axis 14 is configured to enter the inside of the second movable wing 16. As a result, the air resistance due to the first horizontal axis 13 and the second horizontal axis 14 can be reduced. Although such a configuration is used in the present embodiment, the present configuration is not an indispensable matter for carrying out the present invention.

風車１を利用する場合、第１の鉛直回転軸１１と第２の鉛直回転軸１２のそれぞれの回転を利用してもよく、第１の鉛直回転軸１１と第２の鉛直回転軸１２の回転をギア等によって一つの回転とし、それを利用してもよい。
例えば、風車１を風力発電装置として利用する場合、第１の鉛直回転軸１１と第２の鉛直回転軸１２のそれぞれに図示しない発電機を連結してもよく、第１の鉛直回転軸１１と第２の鉛直回転軸１２の回転を図示しないギア等によって一つの回転とし、それに一つの図示しない発電機を連結してもよい。 When the wind turbine 1 is used, the rotations of the first vertical rotation shaft 11 and the second vertical rotation shaft 12 may be used respectively, and the rotation of the first vertical rotation shaft 11 and the second vertical rotation shaft 12 may be used. May be used as one rotation by a gear or the like.
For example, when the wind turbine 1 is used as a wind power generator, a generator (not shown) may be connected to each of the first vertical rotation shaft 11 and the second vertical rotation shaft 12, and the first vertical rotation shaft 11 and the first vertical rotation shaft 11 may be connected to each other. The rotation of the second vertical rotation shaft 12 may be combined into one rotation by a gear or the like (not shown), and one generator (not shown) may be connected to the rotation.

上述した内容は、あくまでも本発明の一実施形態に関するものであって、本発明が上記内容に限定されることを意味するものではない。 The above-mentioned contents are merely related to one embodiment of the present invention, and do not mean that the present invention is limited to the above-mentioned contents.

１ 風車（第１の実施形態）
１１ 第１の鉛直回転軸 １２ 第２の鉛直回転軸
１３ 第１の水平軸 １４ 第２の水平軸
１５ 第１の可動翼 １６ 第２の可動翼
１５ａ 受圧面 １６ａ 受圧面
１５１ 回動規制手段

1 wind turbine (first embodiment)
11 1st vertical rotation axis 12 2nd vertical rotation axis 13 1st horizontal axis 14 2nd horizontal axis 15 1st movable wing 16 2nd movable wing 15a pressure receiving surface 16a pressure receiving surface 151 rotation regulating means

Claims (4)

風力の方向に垂直な鉛直回転軸をもつ風車であって、
第１の鉛直回転軸と、
前記第１の鉛直回転軸と同軸に回転可能となるように、前記第１の鉛直回転軸に支持された第２の鉛直回転軸と、
前記第１の鉛直回転軸の周囲から放射状に延びる複数の第１の水平軸と、
前記第２の鉛直回転軸の周囲から放射状に延びる複数の第２の水平軸と、
前記第１の水平軸のそれぞれに配設されるとともに前記第１の水平軸まわりに可動である第１の可動翼であって、風を受ける受圧面が略鉛直方向となる受圧位置と前記受圧面が略水平方向となる避圧位置との間のみを略９０度回動可能であり、風を受けて前記第１の鉛直回転軸を一定方向に回転させる第１の可動翼と、
前記第２の水平軸のそれぞれに配設されるとともに前記第２の水平軸まわりに可動である第２の可動翼であって、前記第１の可動翼とは対照的に回動可能であり、風を受けて前記第２の鉛直回転軸を前記第１の鉛直回転軸とは逆方向に回転させる第２の可動翼と、
を備えた風車。 A windmill with a vertical axis of rotation that is perpendicular to the direction of the wind force.
The first vertical axis of rotation and
A second vertical rotation shaft supported by the first vertical rotation shaft so as to be rotatable coaxially with the first vertical rotation shaft.
A plurality of first horizontal axes extending radially from the periphery of the first vertical rotation axis,
A plurality of second horizontal axes extending radially from the periphery of the second vertical rotation axis,
A first movable blade that is arranged on each of the first horizontal axes and is movable around the first horizontal axis, and has a pressure receiving position and the pressure receiving surface whose pressure receiving surface that receives wind is in a substantially vertical direction. A first movable wing that can rotate about 90 degrees only between a pressure relief position where the surface is in a substantially horizontal direction and receives wind to rotate the first vertical rotation axis in a certain direction.
A second movable wing that is disposed on each of the second horizontal axes and is movable around the second horizontal axis, and is rotatable in contrast to the first movable wing. , A second movable blade that rotates the second vertical rotation shaft in the direction opposite to the first vertical rotation shaft in response to the wind.
A windmill equipped with. 前記第１の可動翼および前記第２の可動翼が略三角形である請求項１に記載の風車。 The wind turbine according to claim 1, wherein the first movable wing and the second movable wing are substantially triangular. 前記第１の可動翼および前記第２の可動翼が無風状態で前記受圧位置となる請求項１または請求項２に記載の風車。 The wind turbine according to claim 1 or 2, wherein the first movable wing and the second movable wing are in the pressure receiving position in a windless state. 前記第１の可動翼および前記第２の可動翼は、前記受圧面が湾曲している請求項１〜請求項３のいずれか一項に記載の風車。

The wind turbine according to any one of claims 1 to 3, wherein the first movable wing and the second movable wing have a curved pressure receiving surface.
JP2019219548A 2019-12-04 2019-12-04 Wind turbine Pending JP2021088953A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56135761A (en) * 1980-03-26 1981-10-23 Motoaki Kato Vertical shaft type double inverted wind turbine and system for protection and speed control of wind turbine
JPS5892474U (en) * 1981-12-18 1983-06-22 田中　哲次 windmill
JP2014101874A (en) * 2012-11-19 2014-06-05 Shuzo Onodera Blade function device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56135761A (en) * 1980-03-26 1981-10-23 Motoaki Kato Vertical shaft type double inverted wind turbine and system for protection and speed control of wind turbine
JPS5892474U (en) * 1981-12-18 1983-06-22 田中　哲次 windmill
JP2014101874A (en) * 2012-11-19 2014-06-05 Shuzo Onodera Blade function device

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