JP2005105911A - Vertical shaft type wind power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical shaft type wind power generation device for generating power with slight wind by using supporting blades in asymmetrical blade shape for efficiently rotating a rotating shaft. <P>SOLUTION: The vertical shaft type wind power generation device 1 comprises the rotating shaft 2 vertically provided, two vertical blades 3 mounted on the rotating shaft 2 in the peripheral direction, and supporting members 4 arranged in inclination to a horizontal plane for connecting the rotating shaft 2 to each of the blades 3. The blades 3 and the supporting members 4 are both in sectionally asymmetrical blade shape. The two supporting members 4 are provided between the rotating shaft 2 and each of the blades 3 in inclination to the rotating shaft 2 and each of the blades 3. Portions each consisting of the blade 3 and the supporting member 4 are formed on right and left sides of the rotating shaft 2 and arranged in symmetry with the rotating shaft 2 as a center. The positions of the maximum blade thicknesses of the blade 3 and the supporting member 4 are arranged in the moving direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vertical axis wind power generator that generates a propulsion torque for rotating a rotary shaft by using a member having a cross-sectional shape of an asymmetric wing shape.

Conventionally, vertical axis wind power generators have been known.
For example, there is one disclosed in Patent Document 1 below. The thing of this patent document 1 is a straight wing type wind turbine which arrange | positions a straight wing | blade around the vertical axis | shaft, and connected this straight wing to the shaft side with the support wing, and considers efficiency, self-starting property, noise, etc. Thus, the solidity, mounting angle, blade thickness, etc. are optimized.
Japanese Patent No. 3368537

  The thing of patent document 1 has the cross section of a support wing | blade having a symmetrical wing | blade shape, and can suppress a wind-loss drag. However, when the wind is light, it is difficult to rotate the vertical axis more efficiently. In addition, asymmetric wing-shaped support wings may be used for the one of Patent Document 1, but since the asymmetric wing-shaped support wings are simply provided on the vertical axis horizontally, the propulsion torque by lift force is Although it occurs, it is difficult to generate it more efficiently.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vertical axis wind power generator capable of generating power even in light winds by efficiently rotating a vertical axis using asymmetric blade-shaped support blades.

Means and effects for solving the problems

A vertical axis wind power generator according to the present invention includes a rotating shaft provided vertically, vertical blades attached in a circumferential direction of the rotating shaft, and a support member that connects the rotating shaft and the blades. Provided, the support member has an asymmetric wing shape in cross-sectional shape, and the length direction of the support member is inclined with respect to a horizontal plane.
With the above configuration, the support member having a cross-sectional shape of an asymmetrical wing shape is arranged to be inclined with respect to the horizontal plane, so that it is possible to obtain a propulsive torque rather than arranging it horizontally and to rotate the vertical axis together with the blades efficiently. Can generate electricity even in light winds. Moreover, even if the rotation of the rotating shaft becomes faster, the windage resistance can be suppressed because the cross-sectional shape of the support member is a wing shape.

In the vertical axis wind power generator of the present invention, it is preferable that at least two or more support members are provided.
With the above configuration, the propulsion torque can be obtained more efficiently, and the vertical shaft can be efficiently rotated together with the blades. Therefore, it is possible to generate electric power even in a light wind.

The vertical axis wind power generator of the present invention includes a rotating shaft provided vertically, vertical blades attached in a circumferential direction of the rotating shaft, a support member that connects the rotating shaft and the blades, The cross-sectional shape is an asymmetric wing shape, and includes an asymmetric wing shape member provided along the support member, and a mounting member for attaching the asymmetric wing shape member to the support member. The direction is inclined with respect to the horizontal plane.
With the above configuration, the asymmetric wing shape member whose cross-sectional shape is an asymmetric wing shape is arranged inclined with respect to the horizontal plane, so that it is possible to obtain propulsion torque rather than horizontal arrangement, and the vertical axis is rotated efficiently together with the blades. Because it can be generated, it can generate electricity even in light winds. Moreover, even if the rotation of the rotating shaft becomes faster, the windage resistance can be suppressed because the cross-sectional shape of the asymmetric blade-shaped member is a blade shape.

In the vertical axis wind power generator according to the present invention, it is preferable that at least one of the support member and the attachment member has an asymmetric wing shape.
With the above configuration, the propulsion torque can be obtained more efficiently, and the vertical shaft can be efficiently rotated together with the blades and the support member, so that it is possible to generate power even in a light wind.

In the vertical axis wind power generator of the present invention, it is preferable that at least two or more support members are provided.
With the above configuration, the propulsion torque can be obtained more efficiently, and the vertical shaft can be efficiently rotated together with the blades. Therefore, it is possible to generate electric power even in a light wind.

In the vertical axis wind power generator of the present invention, it is preferable that at least two or more mounting members are provided.
With the above configuration, the propulsion torque can be obtained more efficiently, and the vertical shaft can be efficiently rotated together with the blades and the support member, so that it is possible to generate power even in a light wind.

In the vertical axis wind power generator of the present invention, it is preferable that at least two asymmetric wing-shaped members are provided.
With the above configuration, the propulsion torque can be obtained more efficiently, and the vertical shaft can be efficiently rotated together with the blades, the support member, and the mounting member.

  Next, an embodiment of a vertical axis wind power generator according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an upper part of a vertical axis wind power generator according to a first embodiment of the present invention, and FIG. 2 is a diagram showing an example of a cross-sectional shape of a support member, an asymmetric wing-shaped member or an attachment member, II-II sectional view of each member, FIG. 3 is a view showing an upper part of the vertical axis wind power generator according to the second embodiment of the present invention, and FIG. 4 is a vertical axis wind power generator according to the third embodiment of the present invention. The figure which shows the upper part of an apparatus, FIG. 5: is a figure which shows the upper part of the vertical axis | shaft type wind power generator which concerns on 4th Embodiment of this invention.

(First embodiment)
As shown in FIG. 1, a vertical axis wind power generator 1 according to a first embodiment of the present invention includes a rotary shaft 2 provided vertically and two vertically oriented blades attached in the circumferential direction of the rotary shaft 2. 3, and a support member 4 that connects the rotary shaft 2 and each blade 3 and is disposed to be inclined with respect to a horizontal plane.

Although not shown, the rotary shaft 2 is rotatably supported by a bearing or the like, and a power generation device that generates electric power by transmitting the rotational force of the rotary shaft 2 is provided below the rotary shaft 2. The same applies to each embodiment described below.
The blade 3 has an asymmetric wing shape as shown in FIG. This asymmetric wing shape is preferably similar to the cross-sectional shape of an airplane wing. In addition, the right and left blades 3 in FIG. 1 are arranged so that the cross-sectional shapes of the right and left blades 3 are symmetric about the rotation axis 2 and the maximum blade thickness of each blade 3 is on the traveling direction side. Yes.
Two supporting members 4 are provided between the rotating shaft 2 and each blade 3 so as to be inclined with respect to the rotating shaft 2 and each blade 3. The cross-sectional shape of the support member 4 is an asymmetric wing shape as shown in FIG. 2, and this asymmetric wing shape is preferably similar to the cross-sectional shape of the wing of an airplane.
In addition, the portion composed of the blade 3 and the support member 4 configured on the right side of the rotation shaft 2 in FIG. 1 and the portion composed of the blade 3 and the support member 4 configured on the left side of the rotation shaft 2 They are arranged symmetrically as the center. Moreover, although not shown in figure, the position of the largest blade thickness of the blade | wing 3 and the supporting member 4 is arrange | positioned so that it may become the advancing direction side.

  With the above-described configuration, lift force is generated by the blades 3 and the support member 4 only by receiving a breeze, and the rotating shaft 2 is rotated. As a result, the rotational force is transmitted to the power generator provided at the lower part of the rotary shaft 2 to generate power.

  Therefore, since the cross-sectional shape of the support member 4 is an asymmetric wing shape, it is possible to obtain a propulsion torque due to lift, and the vertical axis can be efficiently rotated together with the blades 3. Type wind power generator can be provided. Moreover, even if the rotation of the rotating shaft 2 becomes faster, the vertical cross-sectional wind power generator that can suppress the wind damage resistance can be provided because the cross-sectional shape of the support member 4 is a wing shape.

(Second Embodiment)
In the vertical axis wind power generator 5 according to the second embodiment, as a support member of the blade 3, a support member 6 provided to be inclined with respect to the horizontal plane and a support member 7 parallel to the horizontal plane are combined. This is different from the vertical axis wind power generator 1 according to the first embodiment.
Specifically, as shown in FIG. 3, two support members 6 and 7 are provided on the rotary shaft 2 and each blade 3 between the rotary shaft 2 and each blade 3, respectively. The cross-sectional shapes of the support members 6 and 7 are the same as the cross-sectional shape of the support member 4 shown in FIG. It is preferable that the cross-sectional shape of the support members 6 and 7 is also similar to the cross-sectional shape of the airplane wing.
Moreover, the site | part which consists of the blade | wing 3 and the supporting members 6 and 7 comprised on the right side of the rotating shaft 2 in FIG. 3, and the site | part which consists of the wing | blade 3 and the supporting members 6 and 7 comprised on the left side of the rotating shaft 2 are They are arranged symmetrically around the rotation axis 2. Although not shown, the blades 3 and the support members 6 and 7 are arranged so that the maximum blade thickness is on the traveling direction side.

  With the above configuration, just by receiving a breeze, lift is further generated by the blades 3 and the support members 6 and 7, and the rotating shaft 2 is rotated. As a result, the rotational force is transmitted to the power generator provided at the lower part of the rotary shaft 2 to generate power.

  Therefore, since the cross-sectional shape of the support members 6 and 7 is an asymmetric wing shape, it is possible to obtain a propulsion torque due to lift, and the vertical axis can be efficiently rotated together with the blades 3, so that power can be generated even in a light wind. A vertical axis wind power generator can be provided. Further, even if the rotation of the rotating shaft 2 becomes faster, the windage resistance can be suppressed because the cross-sectional shape of the support members 6 and 7 is a wing shape.

(Third embodiment)
As shown in FIG. 4, the vertical axis wind power generator 8 according to the third embodiment is provided along a support member 9 provided perpendicular to the rotary shaft 2, and the cross-sectional shape is an asymmetric wing shape. A certain asymmetric wing shape member 10 and a mounting member 11 for attaching the asymmetric wing shape member 10 to the support member 9 are further provided. Specifically, as shown in FIG. 4, the length of the attachment member 11 a on the blade 3 side is longer than that of the attachment member 11 b on the rotating shaft 2 side.
The cross-sectional shape of the support member 9 is the same as the cross-sectional shape of the support member 4 shown in FIG. In addition, it is preferable that the cross-sectional shape of the support member 9 is similar to the cross-sectional shape of the airplane wing.
The asymmetric wing shape member 10 is attached to one end of the attachment member 11a on the blade 3 side and one end of the attachment member 11b on the rotating shaft 2 side. As a result, the asymmetric wing-shaped member 10 is provided with an inclination with respect to the support member 9. The cross-sectional shape of the asymmetric wing-shaped member 10 is the same as that of the support member 4 shown in FIG. Is preferred. The same applies to the attachment member 11. Further, it is preferable that the position of the maximum blade thickness in the cross-sectional shape of the attachment member 11 is arranged so as to be in the same direction as the position of the maximum blade thickness in the cross-sectional shape of the blade 3.
Further, in FIG. 4, the portion composed of the blade 3, the support member 9, the asymmetric blade-shaped member 10 and the mounting member 11 configured on the right side of the rotation shaft 2, and the blade 3 and the support member 9 configured on the left side of the rotation shaft 2. The portion composed of the asymmetric wing-shaped member 10 and the mounting member 11 is arranged symmetrically about the rotation axis 2. Moreover, although not shown in figure, the position of the largest blade | wing thickness of the blade | wing 3, the supporting member 9, the asymmetric wing | blade shape member 10, and the attachment member 11 is arrange | positioned so that it may become the advancing direction side.

  With the above-described configuration, lift force is further generated by the blade 3, the support member 9, the asymmetric wing-shaped member 10, and the attachment member 11 only by receiving a breeze, and the rotating shaft 2 is rotated. As a result, the rotational force is transmitted to the power generator provided at the lower part of the rotary shaft 2 to generate power.

  Therefore, since the cross-sectional shapes of the support member 9, the asymmetric wing shape member 10, and the mounting member 11 are asymmetric wing shapes, it is possible to obtain a propulsion torque due to lift, and to efficiently rotate the vertical axis together with the blades 3. Therefore, it is possible to provide a vertical axis wind power generator that can generate power even in a light wind. Moreover, even if the rotation of the rotating shaft 2 becomes faster, the windage resistance can be suppressed because the cross-sectional shapes of the support member 9, the asymmetric wing-shaped member 10 and the mounting member 11 are wing-shaped.

(Fourth embodiment)
As shown in FIG. 5, the vertical axis wind power generator 12 according to the fourth embodiment includes two blades 3 arranged in parallel to the rotary shaft 2 and a support provided perpendicular to the rotary shaft 2. The member 14 is provided with an asymmetric wing-shaped member 13 whose both ends are attached to the blade 3 and the support member 14 at an inclination.
The asymmetric wing shape member 13 has the same shape as the support member 4 shown in FIG. 2, and the asymmetric wing shape member 13 and the support member 14 are similar to the cross-sectional shape of the wing of an airplane. Is preferred.
Further, in FIG. 4, the portion composed of the blade 3, the asymmetric blade shape member 13 and the support member 14 configured on the right side of the rotation shaft 2, and the blade 3, the asymmetric blade shape member 13 and the support configured on the left side of the rotation shaft 2. The part composed of the member 14 is arranged symmetrically about the rotation axis 2. Moreover, although not shown in figure, the position of the blade | wing 3, the asymmetric wing | blade shape member 13, and the support member 14 is arrange | positioned so that it may become the advancing direction side.

  With the above-described configuration, lift force is generated by the blade 3, the asymmetric wing shape member 13, and the support member 14 only by receiving a breeze, and the rotating shaft 2 is rotated. As a result, the rotational force is transmitted to the power generator provided at the lower part of the rotary shaft 2 to generate power.

  Therefore, since the cross-sectional shapes of the asymmetric wing shape member 13 and the support member 14 are asymmetric wing shapes, it is possible to obtain a propulsion torque due to lift, and the vertical axis can be efficiently rotated together with the blades 3. It is possible to provide a vertical axis wind power generator that can generate power even at times. Further, even if the rotation of the rotating shaft 2 is accelerated, the windage resistance can be suppressed because the cross-sectional shapes of the asymmetric blade-shaped member 13 and the support member 14 are blade-shaped.

  In the vertical axis wind power generator of each of the above embodiments, two blades have been described, but three or more blades may be used. In addition, a vertical axis wind power generator configured by appropriately combining a necessary number of support members, asymmetric wing-shaped members, or attachment members with respect to the number of blades may be used.

  Further, the present invention can be modified in design without departing from the scope of the claims, and is not limited to the above embodiment.

The figure which shows the upper part of the vertical axis | shaft type wind power generator which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the cross-sectional shape of a supporting member, an asymmetric wing | blade shape member, or an attachment member, Comprising: II-II sectional drawing of each member. The figure which shows the upper part of the vertical axis type | mold wind power generator which concerns on 2nd Embodiment of this invention. The figure which shows the upper part of the vertical axis type | mold wind power generator which concerns on 3rd Embodiment of this invention. The figure which shows the upper part of the vertical-axis type wind power generator which concerns on 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 5, 8, 12 Vertical axis | shaft type wind power generator 2 Rotating shaft 3 Blade | wing 4, 6, 7, 9, 14 Support member 10, 13 Asymmetric blade shape member 11 Mounting member

Claims (7)

A rotating shaft provided vertically; a plurality of vertically oriented blades attached in a circumferential direction of the rotating shaft; and a support member that connects the rotating shaft and the blades,
A vertical axis wind power generator in which a transverse cross-sectional shape of the support member is an asymmetric wing shape, and a length direction of the support member is inclined with respect to a horizontal plane.   The vertical axis wind power generator according to claim 1, wherein at least two of the support members are provided. A rotating shaft provided vertically, a plurality of longitudinally attached blades attached in the circumferential direction of the rotating shaft, a support member connecting the rotating shaft and the blades, and a cross-sectional shape is an asymmetric blade shape, An asymmetric wing-shaped member provided along the support member; and an attachment member for attaching the asymmetric wing-shaped member to the support member;
A vertical axis wind power generator in which the length direction of the asymmetric wing-shaped member is inclined with respect to a horizontal plane.   The vertical axis wind power generator according to claim 3, wherein at least one of the support member and the mounting member has an asymmetric wing shape.   The vertical axis wind power generator according to claim 3 or 4, wherein at least two or more support members are provided.   The vertical axis wind power generator according to claim 3 or 4, wherein at least two or more mounting members are provided. 4. The vertical axis wind power generator according to claim 3, wherein at least two asymmetric wing-shaped members are provided.

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