JP2015127530A - Wind turbine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind turbine that continues to rotate if wind blows.SOLUTION: A vertical blade 50 comprised of a first small blade 53 and a second small blade 57 connected by a hinge part 60 is pivotally supported by a first supporting shaft 46 arranged on a circumference of a circle C1 with a radius R of a first rotor 39 pivotally supported on a first vertical rotating shaft 33 and a second supporting shaft 47 arranged on a circumference of a circle C2 with a radius (r) of a second rotor 41 pivotally supported on a second vertical rotating shaft 34 so as to form a wind turbine 1, and a mathematical relation of R>r+D, A+B>R-r+D, |A-B|<R-r-D is established, where D is a horizontal distance between the first vertical rotating shaft 33 and the second vertical rotating shaft 34, A is a horizontal distance between the hinge part 60 and the first supporting shaft 46, B is a horizontal distance B between the hinge part 60 and the second supporting shaft 47, R, (r) are radius, the hinge part 60 is always positioned inside the circle C1 and a crossing angle α between wind direction and a horizontal direction line L1 is kept at 90° by a position control part 63.

Description

  The present invention relates to a windmill having a rotation axis perpendicular to the direction in which the wind blows.

In recent years, diversification of energy sources has been screamed in Japan, and wind power has attracted attention as one of the energy sources. There is a windmill as a device for extracting energy from wind power. As such a windmill, there is one having a vertical rotating shaft (see Patent Document 1).
In this wind turbine, wind receiving plates are formed symmetrically about a vertical rotation axis.

JP 2009-293607 A

  The windmill described above has a wind receiving plate symmetrically about a vertical rotation axis, so that the wind force acting on the wind receiving plate located on the left side of the rotation axis when viewing the windmill from the windward side, When the windmill is viewed from the windward side, the wind force acting on the wind receiving plate located on the right side of the rotation axis is balanced. As a result, the rotational moment around the rotation axis becomes zero, and the windmill stops rotating.

  The present invention solves the above problems, and an object of the present invention is to provide a windmill that continues to rotate as long as the wind blows.

The present invention adopts the following configuration in order to solve the problem. A wind turbine according to a first aspect of the present invention includes a first vertical rotation shaft and a second vertical rotation shaft, and an axis of the first vertical rotation shaft and an axis of the second vertical rotation shaft. A horizontal distance from the center is D, and one of the first vertical rotation axis and the second vertical rotation axis is rotatable around the other, and the first vertical rotation axis And a first rotary disk on the first rotary disk, the first rotary disk rotating around the second vertical rotary axis, and a second rotary disk rotating around the second vertical rotary axis. N (where N is an integer of 2 or more) first support shafts are erected at equal intervals on the circumference of a first circle having a radius R centered on the second circle. On the circumference of a second circle having a radius r centered on the second vertical rotation axis on the turntable, N second support shafts are erected at equal intervals. The first bearing And the one second support shaft forms a set, and the first support shaft and the second support shaft forming the set support a vertical blade, and The vertical wing includes a first winglet supported by the first support shaft and a second winglet supported by the second support shaft, and the first winglet is supported by the first winglet. And the second winglet are joined by a hinge portion so as to be bendable, a horizontal distance from the hinge portion to the axis of the first support shaft is A, and the second winglet is connected to the second winglet from the hinge portion. The horizontal distance to the axis of the support shaft is B, and between the horizontal distance D, the radius R, the radius r, the distance A, and the distance B, R> r + D. (1)
A + B> R−r + D (2)
| AB | <RrD (3)
When the first rotary disk is viewed from a direction parallel to the first support shaft, the hinge portion of the vertical blade is always located inside the first circle, A wind direction detector for detecting a wind direction, and a position control unit, wherein the position control unit rotates the second vertical rotation axis around the first vertical rotation axis, or The first vertical rotation axis is rotated around the second vertical rotation axis, thereby connecting the axis of the first vertical rotation axis and the axis of the second vertical rotation axis. The horizontal line is maintained at a position intersecting the wind direction detected by the wind direction detector.

The position control unit, for example, connects the axis of the first vertical rotation axis and the axis of the second vertical rotation axis by rotating the second vertical rotation axis around the first vertical rotation axis. It is only necessary to have a configuration in which the horizontal line formed in (1) is moved to a position that intersects the wind direction detected by the wind direction detector. The position controller connects the axis of the first vertical rotation axis and the axis of the second vertical rotation axis by rotating the first vertical rotation axis around the second vertical rotation axis. The horizontal direction line formed in (1) may be moved to a position that intersects the wind direction detected by the wind direction detector.
In the following description, the “horizontal line formed by connecting the axis of the first vertical rotation axis and the axis of the second vertical rotation axis” is referred to as “horizontal line” and “Wind blowing” is referred to as “wind”, and “wind direction detected by the wind direction detector (wind direction of the wind blowing toward the windmill)” is referred to as “wind direction”.

Since Formula (1) is established, even if the second circle rotates around the second vertical rotation axis, the second circle is located inside the first circle when the windmill is viewed from above. It is always located, and the first circle and the second circle do not overlap each other.
When the first rotating disk is viewed from a direction parallel to the first support shaft, the hinge portion of the vertical blade is always located inside the first circle. When the first rotating disk is viewed from a direction parallel to the first support shaft, the vertical blade is always located inside the first circle.
Looking at the windmill from above or below, looking at the first turntable from a direction parallel to the first support shaft, and looking at the second turntable from a direction parallel to the first support shaft. Further, viewing the first rotating disk from a direction parallel to the second support shaft and viewing the second rotating disk from a direction parallel to the second support shaft are the same as the viewing direction.

Since the equations (2) and (3) are established, when the windmill is viewed from above, the first circle can rotate 360 ° around the first vertical rotation axis, and the second circle It is possible to rotate 360 ° around two vertical rotation axes.
Expressions (1) to (3) are established, and when the wind turbine is viewed from above, the hinge portion of the vertical blade is always located inside the first circle. For this reason, when the wind turbine is viewed from above, when the vertical wing that has received the wind rotates around the first vertical rotation axis and the second vertical rotation axis inside the first circle, The circle rotates around the first vertical rotation axis, and the second circle rotates around the second vertical rotation axis. Then, as the first circle rotates, the first rotating disk rotates around the first vertical rotating shaft, and the second rotating disk rotates around the second vertical rotating shaft. .

  As described above, when the windmill is viewed from above, the second circle is located inside the first circle, the center of the first circle (that is, the axis of the first vertical rotation axis), the first circle, The center of the circle 2 (that is, the axis of the second vertical rotation axis) is separated by a distance D. For this reason, the distance between the first circle and the second circle is the first vertical rotation axis on the horizontal line connecting the axis of the first vertical rotation axis and the axis of the second vertical rotation axis. It is farthest at the position on the side, and is closest at the position on the second vertical rotation axis side.

In the following description, the “position where the distance between the first circle and the second circle is the farthest” is referred to as the “maximum separation position”, and the “distance between the first circle and the second circle is The “closest position” is referred to as “minimum separation position”.
The position control unit maintains the horizontal line at a position that intersects the wind direction. For this reason, when the windmill is viewed from the windward side, the maximum separation position is located on either side of the second vertical rotation shaft, and the minimum separation position is located on the opposite side of the maximum separation position. When the windmill is viewed from the windward side, the total area where the vertical blades on the side of the minimum separation position from the second vertical rotation axis receive wind in the plane perpendicular to the wind direction is larger than that of the second vertical rotation axis. The vertical wing on the maximum separation position side is smaller than the total area that receives the wind.

  For this reason, the rotational moment of the vertical blades around the second vertical rotation axis caused by the wind turbine receiving wind is not zero. As a result, the vertical wing rotates around the second vertical rotation axis. Along with the vertical wing, the first circle rotates around the first vertical rotation axis, and the second circle rotates around the second vertical rotation axis. Furthermore, together with the first circle, the first rotating disk rotates around the first vertical rotation axis, and together with the second circle, the second rotating disk rotates around the second vertical rotation axis. To do.

That is, as long as wind blows to the windmill, the vertical blades, the first rotating disk, and the second rotating disk rotate without stopping, and the rotation of the vertical blades, the first rotating disk, or the second rotating disk is used as power. Available as a source.
In the following description, “when the wind turbine is viewed from above, the horizontal direction line formed by connecting the axis of the first vertical rotation axis and the axis of the second vertical rotation axis, and the wind direction are The “intersection angle” is referred to as “intersection angle”.

The intersection angle α only needs to satisfy at least the following expression (4).
0 ° <α <180 ° (4)
According to the knowledge of the present inventor, the crossing angle α preferably satisfies the following formula (5), and the crossing angle α is most preferably 90 °.
45 ° <α <135 ° (5)

  The first winglet may be formed of, for example, a plate-like body or sheet-like body having a flat surface, or may be formed of a plate-like body or sheet-like body having a curved surface. Similarly, the second winglet may be formed of, for example, a plate or sheet having a flat surface, or may be formed of a plate or sheet having a curved surface. good.

  The windmill according to the invention of claim 1 further includes a cover made of one or a plurality of cover bodies around the first rotating disk, and the cover has a circumferential direction of the first rotating disk. In the state where the cover continuously covers the circumferential direction of the first rotating disk, the first vertical rotating shaft or the second vertical axis is formed. When the windmill is viewed from a direction perpendicular to the rotation axis, the vertical blades may be located and hidden inside the cover.

In a state where the cover continuously covers the periphery of the first turntable, the vertical blade is located inside the cover. The wind blowing toward the windmill cannot be directly hit the vertical blades by being blocked by the cover, and the vertical blades are prevented from rotating by the wind blowing toward the windmill.
What is necessary is just to cover the circumference | surroundings of a 1st turntable continuously with a cover in the condition (for example, at the time of a typhoon, etc.) where a strong wind blows toward a windmill. As a result, the strong wind is prevented from directly hitting the vertical wing, and the wind turbine is prevented from being damaged by receiving an excessive force from the strong wind.

  For example, one or a plurality of cover bodies constituting the cover may be configured to be detachable around the first rotating disk. With such a cover, the cover is attached around the first turntable only when the cover is required, and the cover is removed from the first turntable when the cover is not required. Can be stored in a suitable place.

When the cover is constituted by a single cover body, it is preferable that both end portions of the cover body in the circumferential direction of the first rotating disk overlap when the periphery of the first rotating disk is covered by the cover. . By overlapping both end portions in the circumferential direction of the first rotating disk, it is possible to prevent the wind from hitting the vertical blades from the gap of the cover.
Further, when the cover is constituted by a plurality of cover bodies, when the periphery of the first turntable is covered with the cover, the end portion in the circumferential direction of the first turntable of the cover body is adjacent to this. It is preferable that the cover body overlaps with a circumferential end portion of the first turntable. By overlapping the end portions of the adjacent cover bodies, it is possible to prevent the wind from hitting the vertical blades from the gap between the cover bodies.

  For example, M (where M is an integer greater than or equal to 2 and M = N) on the circumference of a third circle having a radius R2 centered on the first vertical rotation axis on the first turntable The third support shaft may be upright at equal intervals, and the cover is composed of M cover bodies, and one cover is provided. In the state where the base end portion of the body is rotatably supported by one third support shaft and the cover continuously covers the first turntable in the circumferential direction of the first turntable. The windmill may have a configuration in which the distal end portion of the body overlaps the proximal end portion of the cover body adjacent in the circumferential direction of the third circle.

If the cover is not in a state of continuously covering the first turntable in the circumferential direction of the first turntable, there will be a gap between the cover bodies adjacent in the circumferential direction of the third circle, The wind blowing toward the windmill hits the vertical wing through this gap.
In all the cover bodies, it is desirable that the relative positional relationship between each cover body and the third circle is the same. By satisfying this condition, the cover body (that is, the cover) is prevented from obstructing the rotation of the windmill.

  By attaching pulleys or gears to each third bearing shaft, connecting one annular belt or chain between the pulleys or gears attached to each third bearing shaft, and rotating the belt or chain Each cover body can be moved with the same rotational movement. This belt or chain may be rotated manually, or may be rotated using the power of a power source such as a motor.

  Since the windmill is as described above, it is possible to provide a windmill that continues to rotate as long as the wind blows.

It is a longitudinal cross-section block diagram of a windmill. It is a cross-sectional block diagram of a windmill. It is the block diagram which looked at the vertical wing from the surface side. It is the block diagram which looked at the vertical wing | blade of the state bent in the hinge part from upper direction. It is a longitudinal cross-sectional block diagram of the windmill concerning the modification 1. FIG. It is a 1st cross-sectional block diagram of the windmill concerning the modification 2. It is a 2nd cross-sectional block diagram of the windmill concerning the modification 2. It is a block diagram of the cover body which the windmill concerning the modification 2 has.

An embodiment of the present invention will be described below with reference to FIGS.
The windmill 1 includes a rotating shaft 10, first rotating disks 38 and 39, second rotating disks 40 and 41, a vertical blade 50, a wind direction detector 62, and a position control unit 63.
An upper end portion 11 and a lower end portion 12 of the rotary shaft 10 are supported by the base 70 so as to be able to rotate 360 °.

Eight bent portions 13, 14, 15, 16, 17, 18, 19, and 20 are formed in order from the upper end portion 11 to the lower end portion 12 of the rotating shaft 10.
In the rotary shaft 10, the end portion 21 is formed between the upper end portion 11 and the bent portion 13, the intermediate portion 23 is formed between the bent portion 13 and the bent portion 14, and the bent portion 14 and the bent portion 15 are interposed. Forms an intermediate portion 24, an intermediate portion 25 is formed between the bent portion 15 and the bent portion 16, an intermediate portion 26 is formed between the bent portion 16 and the bent portion 17, and the bent portion 17 and the bent portion 18 are The intermediate portion 27 is formed between the bent portion 18 and the bent portion 19, the intermediate portion 29 is formed between the bent portion 19 and the bent portion 20, and the bent portion 20 and the lower end portion 12 are The end portion 22 is formed between the two.

  The end part 21, the intermediate part 26, and the end part 22 are on one vertical line. Further, the intermediate portions 24 and 28 are on another vertical line. Further, the lengths of the intermediate portions 23, 25, 27, and 29 are D, respectively, are directed in the horizontal direction, and are parallel to each other. The intermediate portions 24 and 28 form a first vertical rotation shaft 33, and the end portions 21 and 22 and the intermediate portion 26 form a second vertical rotation shaft 34. The first vertical rotation shaft 33 can rotate around the second vertical rotation shaft 34.

  The horizontal distance between the axis of the first vertical rotation shaft 33 and the axis of the second vertical rotation shaft 34 is D. When the windmill 1 is viewed from above, the horizontal line L1 formed by connecting the axis of the first vertical rotation shaft 33 and the axis of the second vertical rotation shaft 34 is the axis of the intermediate portion 29. Match and overlap.

  A horizontal first turntable 38 is pivotally supported by the intermediate portion 24 forming the first vertical rotation shaft 33, and the first turntable 38 is horizontally 360 around the first vertical rotation shaft 33. ° It is configured to be rotatable. A horizontal second turntable 40 is pivotally supported at a position closer to the bent portion 16 side of the intermediate portion 26 forming the second vertical rotation shaft 34. A horizontal second turntable 41 is pivotally supported at a position closer to the bent portion 17 side of the intermediate portion 26 forming the second vertical rotation shaft 34, and the second turntables 40, 41 are connected to the second turntable 40, 41. It is configured to be able to rotate 360 ° horizontally around the vertical rotation shaft 34. A horizontal first turntable 39 is pivotally supported by the intermediate portion 28 that forms the first vertical rotation shaft 33, and the first turntable 39 is 360 horizontally around the first vertical rotation shaft 33. ° It is configured to be rotatable.

  The first turntables 38 and 39 have the same size radius, and the second turntables 40 and 41 have the same size radius. The radius of the first turntables 38 and 39 is larger than the radius of the second turntables 40 and 41. When the windmill 1 is viewed from above, the second turntables 40 and 41 are hidden under the first turntable 38 and cannot be seen.

  In the following description, when the windmill 1 is viewed from above, the “direction in which the first rotating disks 38 and 39 and the second rotating disks 40 and 41 rotate clockwise” is referred to as “forward rotation direction”. The “direction in which the first rotary discs 38 and 39 and the second rotary discs 40 and 41 rotate counterclockwise” is referred to as “reverse rotation direction”.

Eight first support shafts 46 are erected vertically between the lower surface of the first rotating disk 38 and the upper surface of the first rotating disk 39. In addition, eight second support shafts 47 are erected vertically between the lower surface of the second rotating disk 40 and the upper surface of the second rotating disk 41.
On the lower surface of the first turntable 38, the first support shafts 46 are arranged at equal intervals on the circumference of the first circle C1 having a radius R centered on the first vertical rotation shaft 33. Also on the upper side surface of the first turntable 39, the first support shafts 46 are arranged at equal intervals on the circumference of the first circle C <b> 1 having a radius R centered on the first vertical rotation shaft 33. It is out.

  In addition, on the lower surface of the second turntable 40, the second support shafts 47 are equally spaced on the circumference of the second circle C2 having a radius r centered on the second vertical rotation shaft 34. Also on the upper side surface of the second turntable 41, the second support shafts 47 are equally spaced on the circumference of the second circle C2 having a radius r centered on the second vertical rotation shaft 34. Are lined up. The radius R is larger than the radius r.

One first support shaft 46 and one second support shaft 47 form one set, and there are a total of eight sets. The first support shaft 46 and the second support shaft 47 forming one set support one vertical blade 50.
The vertical wing 50 includes a first winglet 53 and a second winglet 57. The first winglet 53 and the second winglet 57 are each formed of a vertically long rectangular plate. One long side portion of the first winglet 53 is pivotally supported by a first bearing shaft 46, and the first winglet 53 is configured to be rotatable around the first bearing shaft 46. Yes. Further, the other long side portion of the first winglet 53 is connected to one long side portion of the second winglet 57 via the hinge portion 60. The other long side portion of the second winglet 57 is pivotally supported by a second support shaft 47, and the second winglet 57 is configured to be rotatable around the second support shaft 47. Yes.

The surface 54 of the first winglet 53 and the surface 58 of the second winglet 57 form the surface 51 of the vertical wing 50 and face the front side in the forward rotation direction. The back surface 55 of the first winglet 53 and the back surface 59 of the second winglet 57 form the back surface 52 of the vertical wing 50 and face the rear side in the forward rotation direction.
On the surface 54 side of the first winglet 53, a reverse protrusion preventing portion 56 is formed on the long side portion connected to the second winglet 57. The reverse protrusion preventing portion 56 is a rectangular plate-like body, projects outward from the first winglet 53, and exists in the same plane as the plate-like body forming the first winglet 53.

In one vertical blade 50 supported by a pair of the first support shaft 46 and the second support shaft 47, the horizontal distance between the axis of the first support shaft 46 and the hinge portion 60 is A. The horizontal distance between the axis of the second support shaft 47 and the hinge portion 60 is B.
A wind direction detector 62 and a position control unit 63 are installed on the base 70. The wind direction detector 62 is configured to detect the wind direction and transmit the detected wind direction as a signal to the position control unit 63.

  The position control unit 63 is connected to the intermediate portion 29 and is configured to be able to rotate the intermediate portion 29 around the end side portion 22. That is, the position control unit 63 is configured to be able to rotate the first vertical rotation shaft 33 around the second vertical rotation shaft 34. Then, the position control unit 63 rotates the first vertical rotation axis 33 around the second vertical rotation axis 34 according to the wind direction received from the wind direction detector 62, and the intersection of the wind direction and the horizontal direction line L1. The angle α is configured to be maintained at 90 °. The direction in which the first vertical rotation shaft 33 rotates by the position control unit 63 is a direction in which the maximum separation position comes to the left of the minimum separation position when the windmill 1 is viewed from the windward side.

And the relationship of above-mentioned Formula (1)-Formula (3) is materialized between horizontal distance D, A, B and radius R, r.
When the wind turbine 1 is viewed from the first rotating disk 39 in a direction parallel to the first support shaft 46 (that is, when the wind turbine 1 is viewed from above), the hinge portion 60 of the vertical blade 50 is always in the first position. It is located inside the circle C1.
The above is the configuration of the wind turbine 1. Next, the effect which the windmill 1 show | plays is demonstrated.
The wind direction detector 62 detects the wind direction of the wind blowing toward the windmill 1 and transmits the detected wind direction as a signal to the position control unit 63.

  The position control unit 63 rotates the first vertical rotation shaft 33 around the second vertical rotation shaft 34 based on the wind direction received from the wind direction detector 62. As a result, the crossing angle α between the wind direction and the horizontal line L1 is maintained at 90 °. When the windmill 1 is viewed from the windward side, the maximum separation position is located on the left side of the rotation axis 10 (that is, the first vertical rotation axis 33 and the second vertical rotation axis 34), and the minimum separation position is the rotation axis. 10 (that is, the first vertical rotation shaft 33 and the second vertical rotation shaft 34), and the second vertical rotation shaft 34 is located at a minimum distance from the first vertical rotation shaft 33 by a distance D. Close to the side.

  In the following description, “the portion on the left side of the second vertical rotation shaft 34 when the windmill 1 having an intersection angle α between the wind direction and the horizontal line L1 of 90 ° is viewed from the windward side”. This is referred to as “the left part”, and “the part that is on the right side of the second vertical rotation shaft 34 when the wind turbine 1 having the crossing angle α between the wind direction and the horizontal line L1 of 90 ° is viewed from the windward side”. This is referred to as the “right part”.

  The first small wing 53 of the vertical wing 50 has a reverse protrusion preventing portion 56. For this reason, in the vertical blade 50, the hinge part 60 can be bent only in a form in which the surface 51 protrudes forward in the forward rotation direction. The hinge part 60 cannot be bent so that the surface 51 is recessed. When the vertical blade 50 is at the maximum separation position, the horizontal distance between the first support shaft 46 and the second support shaft 47 that supports the vertical blade 50 is maximum, and the vertical blade 50 is most open. It becomes a state. In the vertical blade 50 at the maximum separation position, the surface 51 of the vertical blade 50 faces the leeward side.

When the vertical blade 50 is at the minimum separation position, the horizontal distance between the first support shaft 46 and the second support shaft 47 that support the vertical blade 50 is minimized, and the vertical blade 50 is in the most closed state. . In the vertical blade 50 at the minimum separation position, the surface 51 of the vertical blade 50 faces the windward side.
Since the above-described equation (1) is established, when the windmill 1 is viewed from above, the second circle C2 is always located inside the first circle C1, and the circumference of the first circle C1 and the second circle C2 The circumference of the circle C2 does not overlap.

When the windmill 1 is viewed from above, the hinge portion 60 of the vertical blade 50 is always located inside the first circle C1, and the vertical blade 50 is always located inside the first circle C1.
Since the above equations (2) and (3) hold, when the windmill 1 is viewed from above, the first circle C1 can rotate 360 ° around the first vertical rotation axis 33, The second circle C2 can rotate 360 ° around the second vertical rotation axis 34.

  The above formulas (1) to (3) are established. When the windmill 1 is viewed from above, the hinge portion 60 of the vertical blade 50 is always located inside the first circle C1. For this reason, when the wind turbine 1 is viewed from above, the vertical blade 50 rotates 360 ° between the first circle C1 and the second circle C2, and at the same time, the first circle C1 becomes the first vertical The rotation around the rotation axis 33 is 360 °, and the second circle C2 is rotated around the second vertical rotation axis 34 by 360 °. Then, when the first circle C1 rotates 360 °, the first rotary plates 38 and 39 rotate 360 ° around the first vertical rotation shaft 33, and the second rotary plates 40 and 41 become the second. Is rotated 360 ° around the vertical rotation axis 34.

  The second vertical rotation shaft 34 is close to the minimum separation position side by a distance D from the first vertical rotation shaft 33. For this reason, the area of the vertical blade 50 that receives the wind in the left part is larger than the area of the vertical blade 50 that receives the wind in the right part. Further, in the left side portion, the wind mainly hits the recessed back surface 52 of the vertical blade 50. In the right part, the wind mainly hits the protruding surface 51 of the vertical blade 50. Here, when the wind hits the recessed back surface 52 of the vertical blade 50, the wind flows along the back surface 52 so as to gather at the hinge portion 60, and the force of the wind pushing the back surface 52 is large. On the other hand, when the wind hits the protruding surface 51 of the vertical blade 50, the wind flows along the surface 51 toward the first bearing shaft 46 and the second bearing shaft 47, and the wind flows to the surface. The force to push 51 is small.

Therefore, the force with which the wind pushes the vertical wing 50 on the left side portion toward the leeward side is larger than the force with which the wind pushes the vertical wing 50 on the right side portion on the leeward side.
For this reason, the force by which the wind pushes the vertical wing 50 on the left side portion to the leeward side and the force by which the wind pushes the vertical wing 50 on the right side portion on the leeward side are not balanced with each other. The rotational moment around the second vertical rotation axis 34 generated by the force pushing 50 does not become zero.

  As long as the wind blows on the windmill 1, the vertical blade 50 rotates around the second vertical rotation axis 34 in the forward rotation direction by the force of the wind pushing the vertical blade 50. Along with the vertical blade 50, the first circle C1 rotates in the forward rotation direction around the first vertical rotation shaft 33, and the second circle C2 rotates in the forward rotation direction around the second vertical rotation shaft 34. Rotate. Further, when the first circle C1 rotates in the forward rotation direction, the first rotating disks 38 and 39 rotate in the forward rotating direction around the first vertical rotation shaft 33, and the second rotating disk 40, 41 rotates in the forward rotation direction around the second vertical rotation axis 34.

That is, the vertical blade 50, the first rotating disks 38 and 39, and the second rotating disks 40 and 41 are integrally stopped in the forward rotation direction around the rotation shaft 10 by the force of the wind blowing toward the windmill 1. Continue to rotate without.
The vertical blade 50, the first rotating disk 38, 39 and the second rotating disk 40, 41 rotate in the direction in which the surface 51 on which the reverse protrusion preventing portion 56 is formed in the vertical blade 50. The direction is facing forward.
The rotation of the vertical blades 50, the first rotating disks 38 and 39, and the second rotating disks 40 and 41 can be used as a power source for other rotating mechanisms.

  In FIGS. 1 and 3, the reverse protrusion preventing portion 56 is formed at the lower end portion of the long side portion connected to the second winglet 57 on the surface 54 side of the first winglet 53. Yes. Instead, the reverse protrusion preventing portion 56 is formed on the surface 54 side of the first winglet 53 at any other position of the long side portion connected to the second winglet 57. May be. Further, the reverse protrusion preventing portion 56 may be formed on the second winglet 57. In this case, on the surface 58 side of the second winglet 57, the reverse protrusion preventing portion 56 may be formed at any position of the long side portion connected to the first winglet 53.

  In the present embodiment, the reverse protrusion preventing portion 56 is formed on the surface 54 side of the first winglet 53. Instead, the reverse protrusion preventing portion 56 is provided on the back surface 55 side of the first winglet 53 on the long side portion connected to the second winglet 57 and outward from the first winglet 53. It may be formed in a protruding form. Alternatively, the reverse protrusion preventing portion 56 protrudes outward from the second winglet 57 to the long side portion connected to the first winglet 53 on the back surface 59 side of the second winglet 57. May be formed.

  In such a case, in the vertical blade 50, the hinge part 60 can be bent only in a form in which the back surface 52 protrudes forward in the reverse rotation direction, and cannot be bent in a form in which the back surface 52 is recessed. The vertical blade 50, the first rotating disks 38 and 39, and the second rotating disks 40 and 41 are integrally rotated around the rotation shaft 10 in the reverse rotation direction by the force of the wind blowing toward the windmill 1. Keep doing.

  In the present embodiment, the windmill 1 has the first rotating disk 39, but may have the configuration shown in the first modification of FIG. The windmill 1 according to the first modification has a first rotating disk 80 instead of the first rotating disk 39. The first turntable 80 forms a horizontal annular body and has the same outer diameter as the first turntable 38. On the upper surface of the first turntable 80, the first support shafts 46 are arranged at equal intervals on the circumference of the first circle C <b> 1 having a radius R centered on the first vertical rotation shaft 33. Yes. The first turntable 80 is pivotally supported by the intermediate portion 24 that forms the first vertical rotation shaft 33 via the first support shaft 46 and the first turntable 38. It is configured to be able to rotate 360 ° horizontally around the vertical rotation shaft 33.

The other structure of the windmill 1 which concerns on the modification 1 is the same as that of the structure of the windmill 1 in this Embodiment.
As long as the wind blows on the windmill 1, the vertical blade 50 rotates around the second vertical rotation axis 34 in the forward rotation direction by the force of the wind pushing the vertical blade 50. Along with the vertical blade 50, the second rotary plates 40 and 41 rotate in the forward rotation direction around the second vertical rotary shaft 34, and the first rotary plates 38 and 80 have the first vertical rotary shaft 33. Rotate around in forward direction.
Then, the rotation of the vertical blade 50, the first turntables 38 and 80, and the second turntables 40 and 41 can be used as a power source for other rotation mechanisms.

  The windmill 1 may have the structure shown in the modification 2 of FIG.6 and FIG.7. The windmill 1 according to the modified example 2 has all the configurations of the windmill 1 described in the above-described embodiment, and further includes a cover 82. In the wind turbine 1 according to the second modification, the same components as those in the present embodiment are denoted by the same reference numerals and redundant description is omitted. 6 and 7, illustration of a part of the configuration of the wind turbine 1 described in the present embodiment is omitted.

  Between the lower side surface of the first rotary plate 38 and the upper side surface of the first rotary plate 39, M third support shafts 80 are vertically installed. 6 and 7 show a case where M = 8. On the lower surface of the first turntable 38, the third support shafts 80 are arranged at equal intervals on the circumference of the third circle C3 having a radius R2 with the first vertical rotation shaft 33 as the center. Also on the upper side surface of the first turntable 39, the third support shafts 80 are arranged at equal intervals on the circumference of the third circle C3 having the radius R2 with the first vertical rotation shaft 33 as the center. It is out. The relationship of radius R2 ≧ radius R is established.

One third support shaft 80 supports one cover body 83, and M cover bodies 83 supported by the M third support shafts 80 constitute a cover 82. Yes.
When the windmill 1 is viewed from above, the cover body 83 is formed by a curved surface that draws an arc having the same curvature as the circumference of the third circle C3. When the windmill 1 is viewed from above, the length of the arc drawn by one cover body 83 is slightly longer than 1 / M of the circumference of the third circle C3. When the windmill 1 is viewed from above, the cover body 83 is rotatably supported by the third support shaft 80 at the base end portion 85 at the end on the forward rotation direction side of the cover body 83. The tip end portion 86 at the end on the reverse rotation direction side is always located outside the third circle C3.

  A gear 88 is attached to either the upper end side or the lower end side of the third support shaft 80 (in FIG. 8, the gear 88 is attached to the lower end side of the third support shaft 80). One annular chain 90 that is continuous in the circumferential direction of the third circle C <b> 3 is hung from the outside on each gear 88 of the M third bearing shafts 80. When the chain 90 rotates in the forward rotation direction or the reverse rotation direction, each third support shaft 80 rotates via the gear 88 on which the chain 90 is suspended, and the cover body 83 is moved together with the third support shaft 80 to the first position. 3 is configured to rotate around the three support shafts 80.

  A handle (not shown) can be detachably attached to the upper end or the lower end of the third support shaft 80. When the handle attached to any of the third support shafts 80 is turned, the third support shaft 80 is rotated, and the chain 90 is rotated in the forward rotation direction or reversely via the gear 88 of the third support shaft 80. The gears 88 of all the third support shafts 80 are rotated through the rotation of the chain 90, and all the third support shafts 80 are rotated by the rotation of the chain 90. The same rotation is performed.

Since all the third support shafts 80 perform the same rotation, the relative positions that each cover body 83 takes with respect to the third circle C3 are always the same.
By rotating the third support shaft 80 together with the chain 90 and rotating each cover body 83, the cover 82 can continuously cover the periphery of the first rotating disk 38, 39. The vertical wings 50 can be positioned and hidden.

  The third support shaft 80 has a stopper (not shown) that prohibits the rotation of the third support shaft 80, and the third support shaft 80 is only when the stopper is released. 80 is rotatable, and when the stopper is applied, the rotation of the third support shaft 80 is prohibited.

  When a strong wind such as a typhoon may blow to the wind turbine 1, a handle is attached to the third support shaft 80 to release the stopper. Then, the handle 90 is rotated to rotate the third support shaft 80 to which the handle is mounted, and the chain 90 is rotated in the reverse rotation direction through the rotation of the gear 88 of the third support shaft 80. Through rotation, the gears 88 of all the third support shafts 80 are rotated, the cover bodies 83 pivotally supported by the third support shafts 80 are also rotated, and the tip portions 86 of the cover bodies 83 are adjacent to each other. It is assumed that the cover body 83 overlaps the base end portion 85 (that is, the cover body 83 is completely closed) (see FIG. 6). When the wind turbine 1 is viewed from the direction perpendicular to the first vertical rotating shaft 33 or the second vertical rotating shaft 34 and it is confirmed that the vertical blades 50 are completely hidden inside the cover 82, the stopper Therefore, the rotation of the third bearing shaft 80 is prohibited.

As a result, the cover 82 continuously covers the circumferential direction of the first turntables 38 and 39, and the vertical blade 50 is located and hidden inside the cover 82.
If the vertical blade 50 is completely hidden inside the cover 82, even if strong wind blows on the windmill 1, the vertical blade 50 is prevented from rotating by the strong wind, and the windmill 1 is damaged by the strong wind. Is prevented.

  When there is no risk of strong wind blowing on the windmill 1, a handle is attached to the third support shaft 80, and the stopper is released. Then, the handle is turned in the opposite direction, the third support shaft 80 to which the handle is attached is rotated, and the chain 90 is rotated in the forward rotation direction through the rotation of the gear 88 of the third support shaft 80. Through the rotation of the chain 90, the gears 88 of all the third support shafts 80 are rotated, the cover bodies 83 supported by the third support shafts 80 are also rotated, and the tips of the cover bodies 83 are rotated. It is assumed that there is a gap 87 between the portion 86 and the proximal end portion 85 of the adjacent cover body 83 (that is, the cover body 83 is open) (see FIG. 7). When the gap 87 is in a state where there is a large gap between the distal end portion 86 of each cover body 83 and the proximal end portion 85 of the adjacent cover body 83, the third support shaft 80 is inhibited from rotating by applying a stopper.

As a result, when the wind turbine 1 is viewed from the direction perpendicular to the first vertical rotation shaft 33 or the second vertical rotation shaft 34, the vertical blade 50 can be seen from the gap 87 between the cover bodies 83. .
And the wind which blows toward the windmill 1 hits the vertical blades 50 from the gaps 87 between the cover bodies 83, and the vertical blades 50, the first rotating plates 38 and 39, and the second rotating plates 40 and 41 are integrated. It rotates without stopping in the forward rotation direction around the rotation shaft 10.

  According to the inventor's consideration, the cover body 83 is opened and there is a gap 87 between the distal end portion 86 of the cover body 83 and the proximal end portion 85 of the cover body 83 adjacent on the reverse rotation direction side. In order for the windmill 1 to rotate in response to wind, when the windmill 1 is viewed from above, a straight line L2 connecting the distal end on the distal end portion 86 side and the distal end on the proximal end portion 85 side of the cover body 83; The angle θ at which the front end of the cover 83 on the base end portion 85 side and the straight line L3 connecting the first vertical rotation shaft 33 intersect is preferably approximately 90 ° as shown in FIG.

  Further, the inventors consider that the torque for rotating the windmill 1 is such that the cover body 83 is opened and the front end portion 86 of the cover body 83 is adjacent to the proximal end portion 85 of the cover body 83 on the reverse rotation side. In the state where there is a gap 87 between the two, it is considered to be larger than the case where there is no cover body 83.

DESCRIPTION OF SYMBOLS 1 Windmill 10 Rotating shaft 11 Upper end part of rotating shaft 12 Lower end part of rotating shaft 13, 14, 15, 16, 17, 18, 19, 20 Rotating shaft bending part 21, 22 End part of rotating shaft 23, 24, 25, 26, 27, 28, 29, 30 Rotary shaft intermediate portion 33 First vertical rotary shaft 34 Second vertical rotary shaft 38, 39, 80 First rotary disc 40, 41 Second rotary disc 46 First 1 support shaft 47 second support shaft 50 vertical wing 51 surface of vertical wing 52 back surface of vertical wing 53 first wing blade 54 surface of first wing blade 55 back surface of first wing blade 56 prevention of reverse protrusion Part 57 second winglet 58 second winglet surface 59 back surface of second winglet 60 hinge part 62 wind direction detector 63 position control part 70 base 80 third bearing shaft 82 cover 83 cover body 85 cover Body proximal end 86 Cover body distal end 87 Gap 88 gears between the bar member to each other 90 chains L1 horizontal line C1 first circle C2 second circle C3 third circle

Claims (1)

A first vertical rotation axis and a second vertical rotation axis;
The horizontal distance between the axis of the first vertical rotation axis and the axis of the second vertical rotation axis is D,
Either one of the first vertical rotation axis and the second vertical rotation axis is rotatable around the other,
A first turntable that rotates about the first vertical rotation axis; and a second turntable that rotates about the second vertical rotation axis;
N (where N is an integer of 2 or more) first support shafts on the circumference of a first circle having a radius R centered on the first vertical rotation shaft on the first turntable Are arranged at equal intervals, and N second supports are arranged on the circumference of a second circle having a radius r centered on the second vertical rotation axis on the second turntable. The shaft is erected at equal intervals,
One of the first support shafts and one of the second support shafts form a set, and the first support shaft and the second support shaft forming the set are vertical. I support the wing,
The vertical wing includes a first winglet supported by the first support shaft and a second winglet supported by the second support shaft, and the first small wing is supported by the first winglet. The wing and the second small wing are joined by a hinge portion so that they can be bent, and a horizontal distance from the hinge portion to the axis of the first support shaft is A, and from the hinge portion to the first wing The horizontal distance to the shaft center of the support shaft 2 is B,
Between the horizontal distance D, the radius R, the radius r, the distance A, and the distance B, R> r + D
A + B> R−r + D
| A-B | <Rr-D
Is established,
When the first rotating disk is viewed from a direction parallel to the first support shaft, the hinge portion of the vertical blade is always located inside the first circle,
A wind direction detector for detecting the wind direction, and a position control unit,
The position control unit rotates the second vertical rotation axis around the first vertical rotation axis, or rotates the first vertical rotation axis around the second vertical rotation axis. By doing so, a horizontal line formed by connecting the axis of the first vertical rotation axis and the axis of the second vertical rotation axis intersects with the wind direction detected by the wind direction detector. A windmill characterized by maintaining in position.

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