JP5351682B2 - Vertical rotating shaft type wind turbine and wind power generator using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind power generation device including a vertical-rotation-axis wind turbine in which a plurality of blades efficiently and smoothly rotate regardless of a wind direction and also the blades on the side where the wind conventionally acts to disturb the rotation of the blades are not disturbed easily to rotate about a rotation center position of the blades arranged to be spaced from each other in a circumferential direction. <P>SOLUTION: A plurality of plate-shaped blades 4 curved to be an arc shape in a cross section perpendicular to a vertical direction are arranged around a rotation center part o of the blades in the vertical direction to be spaced so that concave side arc surfaces 41 of the blades 4 receive the wind. A hollow space 8 for being passed through by the wind received by the blades 4 is formed on the side of the rotation center part o of the blades 4 so as to communicate with spaces 10 between the adjacent blades. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wind turbine generator using a vertical rotating shaft type wind turbine and the vertical rotating shaft type wind turbine, and more specifically, a wind turbine that efficiently rotates regardless of the wind from which direction and the wind turbine are used. The present invention relates to a wind power generator.

  In recent years, solar power generation and wind power generation have attracted attention in terms of environmental protection and energy saving. A windmill is used for wind power generation, and there are a vertical rotation axis type and a horizontal rotation axis type. In a horizontal rotating shaft type windmill, the propeller does not rotate efficiently unless it receives the opposing wind. For this reason, the tip of the support that supports the propeller at the tip must be directed in the direction in which the wind blows so that the propeller always receives the wind from the front. On the other hand, the wind turbine of the vertical rotation axis type rotates without being influenced by the direction of the wind, but one blade tries to rotate efficiently with the rotation center of the blade as a boundary, but the other blade prevents the rotation. As such, it has the problem of being hit by the wind.

  As a prior art related to a wind turbine generator using a vertical rotating shaft type wind turbine, a first wind turbine having a vertical axis, a second wind turbine having a vertical axis, and a power generator are provided. The wind turbine blades rotate in opposite directions, the power generator is disposed between the first wind turbine and the second wind turbine, and the field magnet and the armature coil of the power generator are around the same center of rotation. And the field magnet rotates in one rotational direction of the first windmill and the second windmill, and the armature coil rotates in the magnetic field generated by the field magnet. A wind power generator that rotates in the other rotation direction of the windmill has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2004-211707

  According to the wind power generator described in Patent Document 1, the first windmill and the second windmill are rotated in opposite directions by the wind force, and the field magnet and the armature coil of the power generation apparatus disposed between the two windmills. However, since the first windmill and the second windmill rotate in opposite directions, there is an advantage that the power generation amount can be doubled by the armature coil crossing the magnetic field by the field magnet.

  However, since it is necessary to provide the first windmill and the second windmill whose rotation directions are opposite to each other with the power generation device interposed, the structure is complicated. In addition, the above problem that the wind acts on the blade on one side with the rotation center of the blade in the direction of rotating the blade but the wind acts on the opposite blade to prevent the rotation has been solved. Absent. Further, the windmill blade described in Patent Document 1 is disposed on the front side curved in a convex shape toward the front side in the rotational direction when viewed from the vertical direction, and on the rear side of the front side, A rear side surface curved in a concave shape toward the rear side, and the front side surface is disposed in front of the traveling direction and has a largest average curvature and a side closer to the rotation center. An airflow low-speed passage surface that is disposed and continuously formed from the front edge surface toward the rear in the traveling direction, and an airflow low-speed surface that is disposed on the side far from the center of rotation and is rearward from the front edge surface in the traveling direction. The blade structure is complicated and difficult to manufacture because it includes a high-speed airflow passage surface that is continuously formed with a curved surface that swells larger than the passage surface and has a length as viewed in the vertical direction that is longer than the low-speed airflow passage surface. Is heavy That.

  The present invention has been made in view of the above points, and the rotation center position of a plurality of blades arranged at intervals in the circumferential direction while the blade rotates efficiently and smoothly regardless of the direction of the wind. Conventionally, the purpose of the present invention is to provide a vertical rotating shaft type wind turbine and a wind turbine generator equipped with the same wind turbine, in which rotation of the blade on the side on which wind acts so as to prevent rotation of the blade is difficult to be prevented. .

In order to achieve the above object, a vertical rotating shaft type wind turbine according to the present invention comprises a plurality of plate-like blades curved so that a cross section perpendicular to the vertical direction is an arc shape, and a concave side arc of the blade. The surface of the blade is arranged around the center of rotation of the blade in a vertical direction so as to receive wind, and spaced apart in the circumferential direction. Provided in communication with the space between the adjacent blades on the rotation center side, and provided by extending an extension plate extending radially outward from the rotation center from the outer edge of the arc surface of each blade. Features.

According to the vertical rotating shaft type windmill having the above-described configuration, the wind is received by the convex-side arc surface 42 on the opposite side (leeward side) from the blade 4 receiving the wind by the concave-side arc surface 41 as shown in FIG. Thus, the wind flows into the blade 4 on the side that acts as a drag of the rotation so as to facilitate the rotation of the windmill body 2, so that the wind is effectively used for the rotation of the windmill body 2 and the windmill body 2 rotates efficiently.
In addition, an extension plate (flat bar) projecting radially from the outer edge of each blade at the time of startup receives wind along with the concave arc surface of the blade, and most of the wind hitting the extension plate rotates the windmill body in one direction. In order to act to generate a rotational force, the windmill body starts to rotate smoothly. In addition, although the width | variety (overhang dimension) of the said extension board is not limited, For example, what is necessary is just about 1/10 about the outer diameter of the said windmill main body.

  As described in claim 2, a concentric inner diameter circle is drawn with a diameter of 1/3 of the outer diameter of the wind turbine body, and the inner diameter circle is divided into six equal parts in the circumferential direction. Draw a concentric intermediate diameter circle with a diameter of 2 and center the point on the intermediate diameter circle with a radius of 1/4 to 1/3 of the outer diameter on the inner diameter circle and the outer diameter circle 6 arcuate blades can be provided.

  In this way, six arcuate blades can be manufactured regularly and easily at equal intervals in the circumferential direction.

  According to a third aspect of the present invention, the blades are supported so as to be integrally rotatable with the upper and lower plates between the opposing circular upper plate and the circular lower plate, and each of the upper plate and the lower plate is supported. It can rotate via a bearing by the rotating shaft each supported by the center part.

  In this way, a plurality of arc-shaped blades can be provided with a space for air to flow between adjacent blades, and can be supported integrally between the circular upper and lower plates, making the structure simple, small and lightweight Is possible. Further, it can be manufactured with a small number of parts such as an arcuate blade, a circular plate, and a rotating shaft. Furthermore, by using a common blade, the number of blades can be easily increased or decreased, and the amount of air received by the windmill body can be arbitrarily adjusted by simply changing the length of the blade.

5. The curvature of the arc surface of each blade according to claim 4 , wherein the wind received by the front blade flows into the concave arc surface of the blade on the opposite side (leeward side) across the cavity. It is desirable to set so that a rotational force for rotating in the same direction is generated.

  In this way, with respect to the blade on the side opposite to the blade receiving the wind on the concave arc surface (leeward side) on the side receiving the wind on the convex arc surface and acting as a drag force for the rotation of the windmill body, FIG. Since the wind flows so as to facilitate the rotation of the windmill body, the wind is effectively used for the rotation of the windmill body, and the windmill body rotates efficiently.

As described in claim 5 , windshield covers covering about 1/4 (90 degrees) in the circumferential direction on the side peripheral surface of the windmill body are rotatably attached to the upper and lower rotating shafts, A wind vane pointing in the direction of the wind is rotatably attached to the rotating shaft, and the windshield cover is integrated with the wind vane so as to face the wind and cover a side circumferential surface of about 1/4 of the wind turbine body. It is desirable to connect so that it may rotate.

  In this way, the wind can be received from the front and the side that acts as a drag of rotation is covered with the windshield cover so that the blade does not hit the blade. The wind that is blown in can be used for the rotation of the windmill body without waste, and the windmill body rotates smoothly even in low winds. Therefore, according to the wind power generator using the windmill according to the present claims, wind power can be efficiently and efficiently used for power generation regardless of the strength of the wind from weak wind to strong wind.

A wind turbine generator according to a sixth aspect includes the vertical rotating shaft type windmill according to any one of the first to fifth aspects.

In this way, by producing a wind power generator using the windmill according to any one of claims 1 to 5 , wind power can be generated regardless of the strength of the wind from weak wind to strong wind. It can be used efficiently for power generation without waste.

According to a seventh aspect of the present invention, a rotor core can be attached to the rotating shaft so as to be integrally rotatable, and a stator core can be disposed around the rotor core.

  If it does in this way, with a rotation of a windmill main body, a rotor core resists the magnetic force between stator cores, and generates electricity by cutting the same line of magnetic force.

The vertical rotating shaft type wind turbine and the wind power generator according to the present invention have the following excellent effects.
-The windmill of this invention has little influence by a wind direction, and can rotate efficiently also with a weak wind.
-Since the wind power generator of this invention has little influence by a wind direction and uses the windmill which rotates efficiently, it can generate | occur | produce efficiently regardless of a wind direction and the strength of a wind force.

It is the top view seen from the AA direction of the wind power generator of FIG. It is a front view which shows embodiment of the wind power generator provided with the vertical rotating shaft type windmill of this invention. It is explanatory drawing which shows an example of the production method of the blade in the vertical rotating shaft type windmill of this invention. It is explanatory drawing which shows another example of the preparation method of the blade in the vertical rotating shaft type windmill of this invention, and represents the flow of the wind in the vertical rotating shaft type windmill provided with the blade created based on the preparation method. It is explanatory drawing which showed the modification of the braid | blade in the vertical rotating shaft type windmill of this invention, and represented an example of the preparation method of a braid | blade. FIG. 6 is a perspective view showing two blades in the vertical rotating shaft type wind turbine of FIG. 5. It is a top view which shows the windmill main body 2 provided with braid | blade 4 'concerning the modification of this invention. It is a top view which shows another embodiment of the wind power generator of this invention. It is a front view which shows the wind power generator of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a vertical rotating shaft type wind turbine and a wind power generator according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, the wind turbine generator 1 includes a vertical rotating shaft type windmill body 2 that is rotatable at a central portion in a support frame 3. The windmill body 2 has a cylindrical shape, and in this example, six blades 4 are provided so as to be integrally rotatable across the upper and lower disks 5. The upper end of the upper rotating shaft 6 and the lower end of the lower rotating shaft 7 protrude upward or downward at the center position of the upper and lower discs 5 and 5 and are fixed so as to be integrally rotatable.

  The support frame 3 includes a substantially square bottom plate 31, and four support columns 32 are erected in the vertical direction on the bottom plate 31. Each of the four support columns 32 is connected in the left-right direction and the front-rear direction by a pair of upper frames (not shown) and lower frames 35 and 36 to form a frame. Further, the upper frame (not shown) and the lower frames 36 are connected by a flat frame 37 or 38. Openings 37a and 38a are provided at the center in the length direction of the upper and lower flat frames 37 and 38, and the upper and lower rotary shafts 6 and 7 can be rotated by bearings 16 and 17 disposed in the openings 37a and 38a, respectively. It is supported by. Reinforcing frames 37b and 38b are integrally and vertically fixed (vertically) on the upper and lower surfaces of the upper and lower flat frames 37 and 38, respectively.

  As shown in FIG. 2, the cylindrical support base 11 is installed on the center portion of the bottom plate 31. A stator core 12 as a power generator (not shown) is disposed in the support base 11, and a rotor core 13 is disposed in the stator core 12. A rotating shaft 14 is provided at the center of the rotor core 13 so that a part of the rotating shaft 14 protrudes upward and can rotate integrally. The rotating shaft 14 is connected to the lower rotating shaft 7 via a shaft coupling 15. For example, a plurality of sets of slip rings (not shown) and brushes that slide on the slip rings are provided in the power generation device, and these brushes are connected so that AC power can be extracted from the rotor core 13. Although a permanent magnet is used for the stator core 12, a part of the generated AC power may be excited by field power converted into DC by a rectifier circuit (not shown). Further, the non-contact method may be used without using a brush, and the power generation device is not particularly limited as long as the power is generated by rotating with as little torque as possible.

  In this example, as shown in FIG. 3, the wind turbine main body 2 draws a concentric inner diameter circle 201 with a diameter d1 = 400 mm which is 1/3 of the outer diameter D when the outer diameter D is 1200 mm. A concentric intermediate diameter circle 202 having a diameter d2 = 600 mm which is ½ of the outer diameter R is drawn from each point equally divided into six at 60 ° intervals in the circumferential direction, and the outer diameter is centered on a point on the intermediate diameter circle 202. By connecting the six-divided point of the inner diameter circle 201 and the outer diameter circle 200 with a radius r = 380 mm of 7/30 of the diameter D, six arc-shaped blades 4 with a fan-shaped angle α = 90 ° are obtained. create. The blades 4 thus created are arranged at equal intervals in the circumferential direction so as to curve in a circular arc shape clockwise from the inner diameter circle 201 toward the outer diameter circle 200.

  FIG. 4 shows another embodiment of the wind turbine main body 2 in which the radius r of the blade 4 is different from the sector angle α. In this example, the radius r of the blade 4 has the same outer diameter, intermediate diameter and inner diameter as the above-described embodiments. Is set to 300 mm, which is 1/4 of the outer diameter R, and the sector angle α = 120 °, and the inner diameter circle 201 forms the cavity 8 in the same manner as in the above embodiment, and the wind blown in the direction of the arrow as shown in FIG. Are received by the concave arcuate surfaces 41 of the plurality of blades 4 facing each other. The wind gives a rotational force in the clockwise direction to the blade 4, and is guided by the concave side arc surface 41 of the blade 4, passes through the cavity portion 8, and the concave side arc of the blade 4 located on the opposite side (leeward side). It is guided by the surface 41 and similarly given a clockwise rotational force, passes through the space 10 between the blades 4 and 4 and is discharged to the outside of the windmill body 2. For this reason, it is possible to cancel the force against the clockwise rotation by receiving the wind on the convex arcuate surface 42 of the blade 4 to some extent. FIG. 4 shows a state where the wind facing the right side surface of the windmill body 2 is received. However, the wind is blown from the right side surface of FIG. In the same manner, the windmill body 2 rotates clockwise.

  In the present embodiment, the blade 4 is arranged so as to be curved in an arc shape counterclockwise from the inner diameter circle 201 toward the outer diameter circle 200, but the blade 4 is changed from the inner diameter circle 201 to the outer diameter circle 200. You may arrange | position so that it may curve in a circular arc shape toward clockwise. When the blade 4 is arranged so as to be curved in an arc shape in the clockwise direction, the windmill body 2 rotates in the clockwise direction. The vertical length (height) of the blade 4 is set to 1.5 times the outer diameter D of the windmill body 2 in this embodiment, that is, L = 1800 mm, but this is also limited. Instead, for example, it can be set to 1200 mm, which is the same as the outer diameter D of the windmill body 2, and can be set according to the required torque of the power generator.

  As shown in FIGS. 1 and 2, a windbreak cover 9 is provided to cover the side peripheral surface 2 a of the windmill body 2 in the circumferential direction approximately ¼ (approximately 90 °). The windshield cover 9 includes a fan-shaped upper plate 9a, a fan-shaped lower plate 9b, and side peripheral walls 9c straddling the peripheral surfaces of the upper and lower plates 9a and 9b as viewed from above, and a substantially 1/4 cylindrical body. Consists of. The windshield cover 9 rotates via a bearing 16 or 17 with respect to the upper rotary shaft 6 and the lower rotary shaft 7 so as to cover a part (1/4 of the circumferential direction) of the side peripheral surface 2a of the windmill body 2. It is attached as possible. In this state, a slight gap is generated in the windshield cover 9 in the vertical and radial directions of the windmill body 2.

  Further, a wind vane 18 is connected to the windshield cover 9 so as to be integrally rotatable. That is, the wind direction blade 18 is a pentagonal vertical blade and is fixed to the outer ring side of the bearing 19. In this state, as shown in FIG. 1, the wind vane 18 intersects the leeward side 9 d of the windshield cover 9 at a substantially right angle on the extended line of the radius of the upper plate 9 a of the windshield cover 9. With this configuration, the wind vane 18 rotates in parallel to the wind blowing direction and on the opposite side of the wind direction. As the wind vane 18 rotates, the windshield cover 9 has the side peripheral wall 9c facing the wind. A part (1/4) of the side peripheral surface 2a of the windmill body 2 is always covered. Therefore, the wind in the direction that inhibits the rotation does not hit the windmill body 2. In addition, about the material which comprises the windmill main body 2, such as the blade 4 and the upper and lower circular plates 5, and the windshield cover 9 and the wind vane 18, light alloys such as aluminum, aluminum alloy, duralumin, titanium, reinforced plastic, etc. Needless to say, is not limited.

  Since the wind power generator 1 of this embodiment is comprised as mentioned above, operation | movement of the windmill main body 2 and the wind power generator 1 is demonstrated continuously.

  Assuming that the windmill body 2 receives wind from the front direction in FIGS. 1 and 2, the wind vane 18 rotates 90 ° clockwise in FIG. 1, and the windshield cover 9 also rotates 90 ° clockwise. . This state is the same as that in FIG. 1, and the wind blows into a 90 ° right side range adjacent to the windshield cover 9. The wind hits the concave arcuate surface 41 of the blade 4 in the windmill body 2, and the windmill body 2 rotates counterclockwise. On the other hand, the wind which tries to hit the convex side arc surface 42 of the blade 4 in the windmill body 2 is blocked by the windshield cover 9. For this reason, rotation of the windmill body 2 in the counterclockwise direction is not hindered by the wind. Further, the wind hitting the concave arcuate surface 41 of the blade 4 in the windmill body 2 is guided to the concave arcuate surface 41 of the blade 4 located on the opposite side through the cavity 8 as shown in FIG. A counterclockwise rotational force is applied to the blade 4 and discharged to the outside of the wind turbine body 2. Therefore, according to the wind turbine generator 1 including the windmill body 2 of the present embodiment, the windmill body 2 receives wind from any direction, receives wind from a plurality of different directions, or wind Even if the blowing direction changes, the windmill body 2 efficiently rotates in a specific direction (counterclockwise). Then, as the windmill body 2 rotates in a specific direction, the lower rotor core 13 rotates against the magnetic force between the stator cores 12 and generates power by cutting the lines of magnetic force, thereby generating AC power.

  Next, FIG. 5 and FIG. 6 show modifications of the windmill body. In this example, the extension plate 4a is directed from the outer edge of all the blades 4 toward the radially outer side from the center position of the windmill body 2 ′. 4 overhangs with a constant width over the entire length. The extension plate 4a can be manufactured integrally by curving the plate-like blade 4. Since each extension plate 4a projects radially from the side peripheral surface 2a of the windmill body 2 ', wind is applied vertically to the entire surface of the extension plate 4a at a position 90 ° counterclockwise from 0 °. It works effectively at the start of rotation of the main body 2 ′, that is, at the time of start-up, and the windmill main body 2 ′ starts to rotate reliably even in a relatively weak wind. Once the windmill body 2 ′ starts rotating, the windmill body 2 ′ continues to rotate even with a very weak wind. Therefore, this modification is effective when the windmill body 2 is started when the wind blows again after the windmill body 2 'stops rotating after the wind stops. Although the windshield cover 9 is not shown in FIG. 5, the windshield cover 9 can also be provided in this modified example, and in that case, the windshield cover 9 is not interfered with the extension plate 4a. The position of the side peripheral wall 9c of the cover 9 is moved outward in the radial direction. The extension plate 4a is usually formed integrally with the blade 4, but the width of the extension plate 4a is about 10 to 20 mm in this example. This numerical value is an example and is not limited.

  Although the embodiments of the vertical rotating shaft type windmill and the wind turbine generator provided with the windmill according to the present invention have been described above, the embodiments can be implemented as follows.

  In the embodiment described above, the number of blades 4 is six, including modifications, but the number can be appropriately determined based on the size of the outer diameter / inner diameter circle of the windmill body 2, for example 3 4 sheets, 5 sheets, 8 sheets may be used.

  The circumferential interval (basically equal intervals) and the size of the space 10 between adjacent blades 4 are determined by the number of blades 4, but the curvature (degree of curvature) of the arc surface of the blade 4 Can be changed.

  When changing the curvature of the arc surface of the blade 4, the size of the cavity 8 (the inner diameter circle 201 of the inner diameter circle 201 is set to smooth the flow of the wind from the blade into which the wind blows to the blade 4 located on the opposite leeward side. It is desirable to change the diameter d1). Basically, when the curvature of the blade 4 is increased, the size of the cavity 8 is preferably decreased.

  -The vertical rotating shaft type windmill of the present invention can be used as a wind power generator for automobiles by attaching it to a lower side such as a front bumper of an automobile in a landscape orientation.

  The extension plate 4 a of the blade 4 shown in FIG. 5 may be provided every other one or every two of the blades 4.

  FIG. 7 is a plan view showing a windmill body 2 ′ provided with a blade 4 ′ according to a modification. The blade 4 ′ of this example has a smaller curvature (radius r ′: r> r ′) of the convex arc surface 42 than the curvature (radius r) of the concave arc surface 41. However, the wind hitting the convex-side arcuate surface 42 is easy to escape, making it difficult to resist rotation. Further, the thickness of the central portion is made slightly thicker than both the inner and outer sides of the blade 4 ', so that the strength of the blade 4' is increased and the durability is enhanced. In the case of this example, the blade 4 'can be manufactured by extrusion molding or injection molding of a light alloy such as an aluminum alloy or a synthetic resin.

  FIG. 8 and FIG. 9 show another embodiment of the wind power generator, FIG. 8 is a plan view, and FIG. 9 is a front view. The wind power generator 1 ′ of the present embodiment is substantially common to the wind power generator 1 shown in FIGS. 1 and 2. Four support columns 32 are erected on the concrete foundation 30 via the bottom plate 31 to constitute a support frame 3 ′. In the wind power generator 1 ′, the position of the wind turbine body 2 is made higher than that of the wind power generator 1 of the above embodiment, and the power generators 12 and 13 are arranged above the concrete foundation 30. In the wind power generator 1 ′, the structure is simplified by omitting the windshield cover 9 and the wind vane 18. In addition, the code | symbol 33 * 34 in FIG. 8 is an upper frame, and the code | symbol 39 * 40 in FIG. 9 is a flat frame. In addition, members common to the wind turbine generator 1 according to the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The wind power generator according to the present invention can be used in the field of power generation, and is suitable as a home-use and medium-sized device, but can also be applied to a large-scale device.

1, 1 'wind turbine generator 2, 2' vertical rotating shaft type windmill body 2a side peripheral surface of windmill body 2 3, 3 'support frame 4, 4' blade 4a extension plate 5 disc 6 upper rotating shaft 7 lower rotating shaft 8 Cavity 9 Windbreak cover 9a Fan-shaped upper plate 9b Fan-shaped lower plate 9c Side peripheral wall 9d Side 10 Space (Gap)
DESCRIPTION OF SYMBOLS 11 Cylindrical support stand 12 Stator core 13 Rotor core 14 Rotating shaft 15 Shaft coupling 16,17,19,20 Bearing 18 Wind direction blade 30 Concrete base 31 Bottom plate 32 Support | pillar 33 * 34 Upper frame 35 * 36 Lower frame 37 * 38 Flat frame 37a, 38a opening 37b, 38b Reinforcement frame 39, 40 Flat frame 41 Concave side arc surface 42 of blade 4 Convex side arc surface of blade 4

Claims (7)

A plurality of plate-like blades curved so that the cross section perpendicular to the vertical direction is arcuate, around the rotation center of the blade in the vertical direction so that the concave arcuate surface of the blade receives wind. In the circumferential direction with an interval,
A cavity through which the wind received by each blade can pass is provided in communication with the space between the blades adjacent to each other on the rotation center side of each blade;
A vertical rotating shaft type wind turbine characterized in that an extension plate extending radially outward from the rotation center portion is provided so as to protrude from the outer edge of the arc surface of each blade .   A concentric inner circle with a diameter of one third of the outer diameter of the windmill body is drawn, and the inner diameter circle is divided into six equal parts in the circumferential direction. 6 arc-shaped pieces connecting the equally divided point of the inner diameter circle and the outer diameter circle with a radius of 1/4 to 1/3 of the outer diameter centered on a point on the intermediate diameter circle The vertical rotating shaft type wind turbine according to claim 1, further comprising a blade.   The blades are supported so as to be able to rotate integrally between an opposing circular upper plate and a circular lower plate, and are supported by bearings by rotating shafts respectively supported at respective central portions of the upper plate and the lower plate. The vertical rotating shaft type wind turbine according to claim 1 or 2, wherein the wind turbine rotates. The curvature of the arc surface of each blade is set such that the wind received by the front blade flows into the concave arc surface of the opposite blade across the cavity and generates a rotational force that causes the blade to rotate in the same direction. The vertical rotating shaft type windmill according to any one of claims 1 to 3, wherein the wind turbine is set. A windshield cover that covers about ¼ of the circumferential direction on the side peripheral surface of the windmill body is rotatably attached to the upper and lower rotating shafts, and
Wind direction blades pointing to the direction of wind are rotatably attached to the rotating shaft, and the windshield cover is integrated with the wind direction blades so as to face the wind and cover a quarter side surface of the windmill body. The vertical rotating shaft type wind turbine according to claim 3 or 4, wherein the wind turbine is connected so as to rotate in a rotating manner. A wind turbine generator comprising the vertical rotating shaft type windmill according to any one of claims 1 to 5 . The wind turbine generator according to claim 6 , wherein a rotor core is attached to the rotation shaft so as to be integrally rotatable, and a stator core is disposed around the rotor core.

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