JP4616918B2 - Vertical wind turbine vertical wing - Google Patents

Description

The present invention relates to a vertical blade of a vertical axis wind turbine in which a plurality of blades, that is, vertical blades are arranged around a vertical rotation shaft via a support rod, and the vertical blades act as a brake even in the case of strong winds. Thus, the present invention relates to a longitudinal blade of a vertical axis wind turbine that maintains the rotational speed as constant as possible.

  The blades of a general vertical wind turbine are vertically long and are disposed on the vertical main shaft via a support arm so as to rotate around the vertical main shaft. Patent Document 1 describes that the rear part in the rotation direction of the longitudinal blades of the vertical axis wind turbine is bent by wind force.

JP 2003-343414 A

Conventionally, in the vertical axis wind turbine, the rotational speed is controlled electrically or mechanically. Therefore, it was impossible to instantaneously control the fluctuation of the wind speed.
Therefore, when this windmill is used for a wind power generator, the output voltage constantly fluctuates, and it is difficult to maintain the rotational speed of the windmill and thus the output voltage within a certain range regardless of the wind speed.

In addition, the vertical blades of the vertical wind turbine may be broken by a strong wind such as a typhoon, or the rotational speed may be excessively increased and the entire wind turbine may be destroyed.
The windmill described in Patent Document 1 is configured such that the rear part of the longitudinal blades in the rotational direction is made of a flexible material, and when the wind speed exceeds a certain value, the rear part of the longitudinal blades in the rotational direction is bent. However, since the vertical wing rotates, when the wind blows from a certain direction, the rear part of the vertical wing rotates in the centrifugal direction, and at the next moment it flexes in the axial direction. This causes a loss.

The present invention controls the rotational speed of the windmill by controlling the rotational speed of the windmill by exerting a braking action by moving a part of the longitudinal blades in the centrifugal direction when receiving wind with a wind speed above a certain level. and its object is to provide an elongated blade vertical axis wind turbine which is adapted may be maintained.

  Specific means of the present invention for achieving the above object are as follows.

(1) around a vertical spindle of vertical axis wind turbine, a longitudinal wings of the vertical axis wind turbine that is disposed vertically through the support arm, the upper and lower ends of the elongated main body portion, toward the longitudinal main axis direction An inwardly inclined portion that inclines, and a vertically long movable wing provided with a weight at the rear end is rotated at the rear end in the rotation direction of the main body between the base ends of the inwardly inclined portions. The rear end can be swung outward by the centrifugal force of the time.

(2) In the above (1) , the movable wing is attached to the main body via a hinge, and a restoring means is disposed between the movable wing and the main body.

(3) In the above (2) , the hinge of the movable wing is formed by fitting a bearing in the movable wing to the support shaft of the main part .

(4) In the above (2), the movable blade of the hinge, formed by彈力piece which connects the front edge of the edge and the movable blade after the main body portion.

In (5) above (2), the movable wing hinge, between the edge and the movable blade leading edge after main section, linked by Elasticity plate, the elastic plate and shall serve as the restoring means.

(6) In any one of the above (1) to (5), the weight of the movable wing centrifuges the free end of the movable wing by centrifugal force when the rotation of the vertically long wing exceeds a certain rotational speed. It shall have a mass that moves in the direction .

(7) In any one of the above (1) to (6), the weight of the movable wing is mounted so as to be movable before and after the movable wing.

(8) In any of the above (1) to (7), the weight of the movable blade, also of whether Ranaru ones of a plurality of small size.

  According to the present invention, the following effects can be obtained.

According to the longitudinal blades of the vertical wind turbine described in (1) above, since the movable blades are attached to the rear of the main body in the rotational direction, when the longitudinal blades exceed a certain rotational speed, the movable blades are caused by centrifugal force. It swings and its free end protrudes in the centrifugal direction. Therefore, drag is applied to the movable blade, and the rotation of the vertically long blade is maintained within a constant rotational speed.
When the rotational speed decreases, the centrifugal force also decreases, so that the movable blade gradually recovers to its original position. Therefore, even if high-speed wind is blowing, rotation above a certain rotation speed is suppressed, and the rotation speed of the longitudinal blades is maintained within a certain range. As a result, in the case of wind power, Ru can be maintain the output voltage within a predetermined range.
The wind force decreases, the centrifugal force also decreases, the free end of the movable blade, to restore to its original position.

In addition, inclined portions that are inclined in the main axis direction are formed at the upper and lower end portions of the main body, and movable wings are attached to the rear of the rotation of the main body on the inner side of the inclined portion. tip direction, i.e. even airflow vertically tries to spread, is inhibited by the inclined portion, airflow without diffusing, it flows toward the movable blade.
When the longitudinal blades exceed a certain rotational speed due to the high-speed wind, the free end of the movable blade moves to the centrifugal direction due to centrifugal force, and the airflow that is suppressed in diffusion by the inclined portion flows toward the movable blade. The braking action is enhanced by hitting the movable blade moved in the centrifugal direction by the centrifugal force.
In addition, since the weight is provided at the free end of the movable wing, if the centrifugal force acts as the vertical wing rotates, the free end of the movable wing easily protrudes in the centrifugal direction and acts as a brake. To do.

In the longitudinal wing of the vertical wind turbine described in (2) , since the movable wing is attached to the main body via a hinge, the movable wing can be easily swung with the hinge as a fulcrum. Since the restoring means is interposed between the movable blades, when the wind speed decreases, the posture of the movable blades can be easily restored by the restoring means.

In the longitudinal blade of the vertical wind turbine described in (3) above, since the bearing is used for the hinge portion of the movable blade, the movable blade is smoothly swung.

Wherein in the longitudinal wings of the vertical axis wind turbine according to (4), the movable blade is connected in 彈 force piece, it is easy to swinging of the free end portion of the movable blade, and rusting of fear is not, Excellent weather resistance.

In the longitudinal blade of the vertical wind turbine described in (5) above, the hinge of the movable blade is formed of a coasting plate and also serves as a restoring means, so that it swings when a centrifugal force is applied to the movable blade, and the rotational speed When it decreases, it naturally restores to its original position by the repulsive force of the elastic plate.

Wherein in the longitudinal wings of the vertical axis wind turbine according to (6), when the rotation exceeds a certain rotational speed, the centrifugal force, the free end of the movable blade of sufficient mass to move in the centrifugal direction Since the weight is provided , if the speed exceeds a certain number of revolutions, the weight moves the free end of the movable wing in the centrifugal direction against the wind force and the restoring means, and acts as a brake. When the wind speed decreases, the movable blade returns to the original position by the restoring means, so that the rotational speed of the vertically long blade can be maintained within a certain range.

In the longitudinal blade of the vertical wind turbine described in (7) above, the weight of the movable blade is movable in the front-rear direction of the movable blade. Therefore, by adjusting the rotational speed by moving the front-rear position of the weight. The swing of the movable wing can be adjusted.

In the longitudinal wing of the vertical wind turbine described in (8) above, since the movable wing weight uses a plurality of small weights, even when the wing is destroyed by a typhoon or the like, a large blow is caused to other things. Never give.

It is a front view of Example 1 of a vertical axis windmill concerning the present invention. It is also a plan view. Similarly, it is an inner side view of a vertically long wing. It is the IV-IV line expanded sectional view in FIG. It is a cross-sectional plan view of the vertically long wing in Example 2. FIG. 10 is an inner side view of a vertically long wing in Example 3. It is the VII-VII line expanded sectional view in FIG. It is a cross-sectional top view of the vertical wing | blade in Example 4. FIG.

  A movable blade that can be swung by centrifugal force during rotation is attached to the rear of the longitudinal blade of the vertical wind turbine.

A first embodiment of the present invention will be described with reference to the drawings. A housing 3 is fixed to an upper end of the vertical main shaft 2 in the windmill 1, and a rotating body 4 is disposed on the upper side of the housing 3 so as to be rotatable. A vertical blade 6 is attached to the rotating body 4 via a support arm 5.
The vertically long blades 6 are resin molded bodies, and the number thereof is arbitrary in the range of 1 to 5 sheets.

A power generation device (not shown) is arranged in the housing 3, and a magnet (not shown) is arranged in the rotating body 4. In conjunction with the rotation of the vertical blades 6, by the rotary body 4 is rotated, not shown power generator for power generation.

Inclined portions 6B that are inclined in the direction of the longitudinal main shaft 2 are connected to upper and lower ends of the vertically long main portion 6A of the vertically long blade 6. In FIG. 3, the right side is the front part in the rotational direction, and the left side is the rear part in the rotational direction. A movable blade 7 is mounted on the rear portion of the main portion 6A in the rotational direction between the base end portions 6C and 6C of the vertically inward inclined portions 6B and 6B of the vertically long blade 6. The movable blade 7 is on the extended surface of the rear edge of the main portion 6A of the vertically long blade 6, and a weight 8 is attached to the rear portion which is a free end portion thereof. Mounting method, implanting set other means are optional.

The movable blade 7 has a thin plate shape in plan view, and as shown in FIG. 4, a hinge 7A attached to the base end portion thereof is pivotally attached to the rear edge of the main body portion 6A.
The distal end portion of the contact projection 7B formed integrally with the movable wing 7 and proximate to the hinge 7A at the proximal end projecting to the opposite side of the weight 8 around the hinge 7A is a main portion 6A. It is in contact with the restoring means 9 made of a leaf spring, which is fixed to the empty space 6D.

Wind turbine 1 of Turkey, such the above structure rotates, the vertically long blades 6 are rotated at a speed higher than the predetermined speed, the centrifugal force applied to the weight 8, the movable blade 7, as shown by the dotted line in FIG. 4 The hinge 7A is pivoted in the centrifugal direction against the restoring means 9 with the hinge 7A as a fulcrum.

As a result, the airflow flowing along the outer surface of the vertically long blade 6 is suppressed by the movable blade 7 protruding in the centrifugal direction and acts as a brake, so that the rotational speed decreases.
As the rotational speed decreases, the centrifugal force applied to the movable blade 7 also decreases. Therefore, the contact projection 7B is pushed to the centrifugal direction by the restoring means 9, and the movable blade 7 is located on the extension of the rear edge of the vertically long blade 6. Return to position.

As the wind speed changes, the rotational speed also changes, and the centrifugal force acting on the movable blade 7 also changes. Therefore, the movable blade 7 repeats rocking according to the strength of the wind speed, and when the wind speed falls below a certain level, the original position Return to.
As a result, the vertical blade 6 automatically rotates in a range of a constant rotational speed even in a strong wind without providing other rotation control means.

  As long as the vertical blade 6 rotates, even if it receives strong wind, the airflow moves along the surface of the vertical blade 6, so that strong wind does not act on the vertical blade 6, and damage to the vertical blade 6 is suppressed. The Therefore, as long as the vertical blades 6 are rotating at a low speed as well as rotating in a strong wind, the vertical blades 6 can effectively operate as a wind power generator.

If the mass of the weight 8 in the movable blade 7 is increased, the movable blade 7 can be swung by the centrifugal force even if the rotational speed of the vertically long blade 6 is low. On the other hand, if the mass of the weight 8 is reduced, the movable blade 7 will not oscillate unless the rotational speed becomes a certain level or higher.

Therefore, by adjusting the mass of the weight 8, the degree of swinging can be arbitrarily adjusted.
Instead of or in addition to the mass of the weight 8, the swing of the movable blade 7 can be controlled by adjusting the strength of the restoring means 9.

FIG. 5 is a cross-sectional plan view of the main part of the vertically elongated wing showing the second embodiment. The same parts as those in the previous example are denoted by the same reference numerals and description thereof is omitted.
In the second embodiment, the hinge 10 </ b> A is formed by integrally providing a rubber-based repulsion piece 10 </ b> B that is integrated with the base end portion of the movable blade 10 and has excellent repulsion. The repulsive force piece 10B at the base end portion of the hinge 10A is fitted in the rear space 6D in the rotation direction of the main portion 6A of the vertically long blade 6.

  When centrifugal force acts on the weight 11 at the free end of the rear portion of the movable blade 10 as the longitudinal blade 6 rotates, the repulsive hinge 10A portion is bent, and the free end portion of the movable blade 10 is centrifuged. Swing in the direction.

As a result, the movable blade 10 protruding outward from the outer surface of the vertical blade 6 acts as a brake, and the rotational speed of the vertical blade 6 decreases.
When the wind speed is lowered, the repulsive hinge 10A portion acts as a restoring means, and the free end portion of the movable blade 10 returns to the original position from the centrifugal direction. The rest is the same as in the first embodiment.

6 is an inner side view of the vertically long blade 6 showing the third embodiment, and FIG. 7 is a sectional view taken along line VII-VII in FIG. The same parts as those in the previous example are denoted by the same reference numerals and description thereof is omitted.
In the vertically long blade 6 in the third embodiment, the inwardly inclined portion 6B is formed so as to cover the blade end portion of the movable blade 12.

  As a result, during rotation, the wind flow that is about to diffuse toward the blade tip of the main portion 6A is suppressed by the inwardly inclined portion 6B, and the wind flow that flows backward in the rotation causes the inner surface of the movable blade 12 to move outward. It can flow and brake efficiently.

  As for the hinge 13, a swing is smoothly performed by using a bearing on the movable blade 12 side and supporting the bearing by a support shaft 13 </ b> A provided on the main portion 6 </ b> A of the vertically long blade 6.

About the weight 14, the thing with the short length of the vertical direction is equipped in series or in parallel so that trouble may not arise when the movable blade 12 is damaged by a typhoon or the like. The weight 14 can be held from the outer surface of the movable wing 12 with a bolt or a pin.
The degree of rotation associated with the rotational speed of the movable wing 12 can be adjusted by the front and rear positions of the weight 14.

FIG. 8 is a transverse plan view of the longitudinal wing 6 showing the fourth embodiment. The same parts as those in the previous example are denoted by the same reference numerals and description thereof is omitted. The restoring means is not shown.
In the fourth embodiment, a gap serving as a hinge 16 portion is opened between the main body portion 6A and the movable blade 15, and both are covered with a film-like coasting plate 17 and connected.

  The elastic plate 17 is made of a synthetic resin fiber (not shown) as a core material, and is coated with a coasting resin in a film shape, and the synthetic resin fiber is a nonwoven fabric, a woven fabric, a knitted fabric, etc. . Since the synthetic resin fiber has elasticity and flexibility, it is excellent in durability even when bent many times.

In FIG. 8, the weight 18 is composed of a plurality of bolts and is screwed to the movable blade 15 from the outside. Thereby, the mass of the entire weight 18 can be adjusted by the number of bolts.

  As described above, in the present invention, the movable blades 7, 10, 12, and 15 attached to the rear portion of the longitudinal blade 6 in the rotational direction have their free ends in the centrifugal direction according to the centrifugal force accompanying the change in the wind speed. Therefore, if only the initial setting is appropriate, leave it at the time of the typhoon and let the movable wings oscillate with the centrifugal force that naturally occurs with rotation. Due to the braking action, the rotational speed of the longitudinal blades 6 can be maintained within a certain range.

  As a result, even if the long blade 6 rotates at a high speed even if it is left in a strong wind, the movable blades 7, 10, 12, and 15 perform a braking action by centrifugal force, and can maintain the rotation speed within a certain range. it can. Further, as long as the longitudinal blades 6 are rotating, a constant output is continued, so that there is no loss associated with stopping in a strong wind as in the prior art.

  In addition, this invention is not limited to the said Example, A design change can be suitably performed according to the objective. Any restoring means 9 may be used as long as the movable wing operates to return to the original position as long as it does not cause wind resistance or reduce the rotation efficiency.

In the present invention, a movable blade is provided at the trailing edge of the longitudinal blade in the rotational direction, and the free end of the movable blade is swung by a centrifugal force during rotation to cause a braking action. However, it does not exceed a certain rotational speed. Therefore, it can be advantageously used for a wind power generator that needs to maintain a constant output.

1. Vertical axis windmill2. Strut 3. Housing 4. Rotating body 5. 5. Support arm Longitudinal wing 6A. Main part 6B. Inwardly inclined portion 6C. Proximal end 6D. Void 7 Movable wing 7A. Hinge 7B. Contact protrusion 8. Weight 9 Restoring means 10. Movable wing 10A. Hinge 10B. Repulsion piece 11. Weight 12. Movable wing 13. Hinge 13A. Support shaft 14. Weight 15. Movable wing 16. Hinge 17. Elastic plate 18. Weight

Claims (8)

Around the vertical main axis in the vertical axis wind turbine, a longitudinal wings of the vertical axis wind turbine that is disposed vertically through the support arm,
The upper and lower ends of the elongated main body portion, toward the longitudinal main axis direction to form the inward inclined portion inclined, between the base end portion of both inward sloping portion, a rear end portion of the rotational direction of the main body, after A longitudinal blade of a vertical axis wind turbine , wherein a longitudinal movable blade having a weight at an end is mounted so that a rear end can swing outward by a centrifugal force during rotation. It said movable vanes, and裝着the main body portion via a hinge, and between the movable blade and the main body portion, Vertical blades of vertical axis wind turbine according to claim 1, characterized in that disposed restoring means. The longitudinally long blade of the vertical wind turbine according to claim 2, wherein the hinge of the movable blade is formed by fitting a bearing in the movable blade to a support shaft of a main part. The longitudinally long blade of the vertical wind turbine according to claim 2, wherein the hinge of the movable blade is formed by a repulsion piece that connects a rear edge of the main portion and a front edge of the movable blade. 3. The vertical wind turbine according to claim 2, wherein the hinge of the movable blade is connected by a coasting plate between a trailing edge of the main portion and the leading edge of the movable blade, and the elastic plate also serves as a restoring means. Long wings. The weight of the movable wing has a mass that moves the free end of the movable wing in the centrifugal direction by centrifugal force when the rotation of the vertical wing exceeds a certain rotational speed. Longitudinal wings of a vertical axis wind turbine according to any one of claims 1 to 5 . The vertical blade of the vertical wind turbine according to any one of claims 1 to 6, wherein the weight of the movable blade is mounted so as to be movable before and after the movable blade. Wherein the weight of the movable vanes, a plurality of elongated blades of vertical axis wind turbine according to any of claims 1 to 7, characterized in that a small to be of any Ranaru ones.

Images