JPH11201019A - Small wind power generator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a small-sized wind power generator which is simple in structure and is suitable for a place where building wind frequently occurs, such as a high-rise building or a high-rise apartment, and suitable for home use. A wind turbine body 1 having a straight blade type wind turbine 2 mounted on a rotating shaft 3, a wind turbine support device 4 for projecting the wind turbine body 1 laterally from a high-rise building structure 8, and connected to the wind turbine body 1 An interlocked generator 5 is provided, and a self-starting Robinson-type wind receiving plate 8 that generates a driving torque when the wind power is small is provided on the straight blade type wind turbine 2 of the wind turbine main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized wind power generator suitable for homes, small-scale establishments such as high-rise buildings and high-rise condominiums, and the like.

[0002]

2. Description of the Related Art Conventionally, among windmills used for wind power generation, those having a vertical rotation axis include a Savonius type windmill shown in FIG. 5A, a Darrieus type windmill shown in FIG. There are a windmill (gyromill) and the like, and those having a horizontal rotation axis include a propeller type two-blade windmill (d) and an American multiblade windmill (e). The output coefficient C for each wind speed ratio λ = (peripheral speed / wind speed) of these wind turbines
p is as shown in FIG.

[0003]

However, among the above-mentioned wind turbines, an efficient two-blade propeller type wind turbine and an American type multi-blade wind turbine have a mechanism for controlling the angle of the blades by the wind speed and many frameworks. However, it is not suitable for home use because of its complexity and high cost. In addition, among the remaining wind turbines, it is known that the straight blade type wind turbine has a simple structure and a high output coefficient, but has no self-starting force.

An object of the present invention is to solve the above-mentioned problems and to provide a small-sized wind power generator which is simple in structure, is suitable for a place where building wind frequently occurs such as a high-rise building or a high-rise apartment, and is suitable for home use. And

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a wind turbine body having a straight blade type wind turbine attached to a rotating shaft, and a wind turbine support device for projecting the wind turbine body sideways from a high-rise building. And a power generator connected to and linked to the wind turbine body, wherein a self-starting pressure receiving member for generating a driving torque when the wind force is low is provided on the straight blade type wind turbine of the wind turbine body.

[0006] According to the above configuration, the windmill main body can be installed so as to protrude laterally from the building by the windmill support device, so that it is possible to generate electricity by efficiently utilizing the building wind generated particularly in a valley such as a high-rise building. In addition, the pressure receiving member can obtain a rotational force when the wind speed is low, can assist the self-starting force of the small straight-wing wind turbine, and can improve the overall efficiency.

According to a second aspect of the present invention, there is provided a wind turbine supporting device, wherein a support post having a wind turbine body at a tip portion is disposed between a use position where the support post projects laterally from a building and a retracted position where the support post retreats toward the building. In addition to providing a deployment mechanism that rotatably supports the wind turbine, an extension mechanism that allows the wind turbine body to approach and separate from the building is provided.

[0010] According to the above configuration, the deployment mechanism of the wind turbine supporting device allows the wind turbine main body to be housed in the building at the time of a storm such as a typhoon, thereby preventing breakage. Further, the wind turbine main body can be arranged at a position where air can be received most efficiently by the retracting mechanism.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Here, an embodiment of the small wind turbine generator according to the present invention will be described with reference to FIGS.

[0010] The small wind power generator is installed, for example, overhanging from a high-rise building or condominium veranda, etc., and generates electricity by effectively utilizing the strong wind (building wind) generated between urban buildings. It is configured to be able to be stored in the event of a storm such as a typhoon.

As shown in FIGS. 1 and 2, the wind turbine generator includes two wind turbine bodies 1 each having a plurality of, for example, two-stage, straight blade type wind turbines 2 mounted on a rotating shaft 3; A wind turbine supporting device 4 that projects sideways from the building, a generator 5 with a speed increasing device driven by the wind turbine main body 1, and a storage device 6 that stores the electric power generated by the generator 5. Further, the straight blade type wind turbine 2 of the wind turbine main body 1 is provided with a Robinson type wind receiving plate 7 which is a self-starting pressure receiving member which generates a driving torque when the wind force is small.

In this wind turbine support device 4, a support post 12 is erected via a fixture 11 attached to a high-rise building structure 8 such as a veranda handrail, and a pair of upper and lower rotating arms 13 is turned on the support post 12. It is movably mounted.
The rotating arm 13 is formed in a cylindrical shape, and the retracting arm 14 is slidably fitted to each of the rotating arms 13, and the tip end of the retracting arm 14 is connected to the generator 5 and the windmill main body 1 via the rotating shaft 3. Are provided respectively.

The windmill supporting device 4 includes a rotating arm 13.
And a deployment mechanism 15 that moves back and forth between a use position where the wind turbine body 1 is laterally protruded from the building and a retracted position where the wind turbine body 1 retreats toward the building, and a building structure where the wind turbine body 1 is a building at the use position. An egress / retreat mechanism 16 that can approach and separate from the object 7 is provided.

The unfolding mechanism includes a support post 12 and a bearing 1.
A rotating arm 13 is provided via 3a, and is mechanically driven (automatic) using a link or an actuator.
However, a simple manual method is adopted here. As a fixing means of the rotating arm 13, a lock pin or a fixed link may be provided between the support post 12 (or the building structure 7) and the rotating arm 13, but here, the simplest building structure 7 is used. And a fixed stay 17 for connecting the tip of the rotating arm 13. Reference numeral 18 denotes a support stay.

The retracting mechanism 15 is, as shown in FIG.
A connecting rod 21 is connected between the distal ends of the two rotating arms 13, and both extending / retracting arms 14 are also connected to each other by a passive rod 22.
Guide slit 13b is formed. A proximal end sheave 23 is rotatably disposed on the support post 12 between the bearings 13a, a distal end sheave 24 is disposed on the connecting rod 21, and a drive sheave 26 is disposed on the support post 12 via a mounting arm 25. ing. And these sheaves 2
A driving cable 27 is wound around 3, 24, 26 and the passive rod 2
2 and a drive cable 27 are connected via a connecting member 28, and by rotating the drive sheave 26 via a retractable handle 26a, the passive rod 22 and the retractable arm 1 are rotated.
The wind turbine main body 1 can be moved back and forth through the door 4. Note that sprockets, chains, gears, toothed belts, and the like can be used instead of the sheaves and the drive cables.

As shown in the figure, the straight blade type wind turbines 2 are arranged at two stages, a tip side and a base end side of the rotating shaft 3, and are fixed to the rotating shaft 3 with a predetermined interval between each wind turbine 2. A pair of guide face plates 31a, 31b, and both guide face plates 31a, 31
Three straight blades 3 that are arranged in the axial direction at 120 ° intervals at the outer peripheral portion between the two linear blades 1b and fixed to the guide face plates 31a and 31b.
2a to 32c, and four self-starting wind receiving plates 7 arranged at 90 ° intervals on the outer peripheral portion of each guide surface plate 31a on the distal end side, and the driving force is increased through the rotating shaft 3. It is configured to be input to the generator 5 with a device.

The straight blades 32a to 32c of each wind turbine 2 are manufactured to have a symmetrical blade-shaped cross section by FRP which can be manufactured at a low cost and light weight with high accuracy. Then, as shown in FIG. 4, a relative velocity W is formed by the wind speed U and the linear blades 32a to 32c, and a lift L is generated on the linear blades 32a to 32c by the relative speed W. Because of the symmetrical wing type, the t-direction component Lt of the lift L generates a rotational force regardless of the orbital position of the straight blades 32a to 32c, and the wind turbine 2
Is rotated.

The guide face plates 31a and 31b are for preventing the lift L from decreasing due to the eddy current generated near the ends of the straight blades 32a to 32c. , And a substantially uniform lift force can be obtained, thereby increasing the rotation efficiency.

Further, since the straight-wing type wind turbine 2 has a small self-starting force, a hemispherical Robinson-type wind receiving plate 7 having a small wind resistance from the rear side is arranged via a supporting member 7a, and the wind speed is reduced. When it is small, a starting torque can be generated.

In the above configuration, the unfolding mechanism 1 is normally used.
5, the windmill main body 1 is fixed in a state of protruding sideways from the building, and the windmill main body 1 is arranged at a position where the wind turbine body 1 receives the wind efficiently by the retracting mechanism 16, and the windmill main body 1 is particularly efficiently used by utilizing the building wind efficiently. Rotated. When the wind speed is low,
The wind turbine main body 1 is mainly rotated by the Robinson-type wind receiving plate 7, and when the wind speed increases, the wind turbine main body 1 is rotated by the straight blades 32a to 32c. When an abnormal wind such as a typhoon blows, the wind turbine main body 1 is retracted by the retracting mechanism 16 and the entire apparatus is moved by the unfolding mechanism 16 to the building structure 8.
Stored on the side to prevent damage.

According to the above embodiment, the wind turbine supporting device 4
As a result, the wind turbine body 1 can be installed so as to protrude laterally from the high-rise building structure 8, so that it is possible to efficiently use the wind generated from the valley of a high-rise building or the like to generate electric power, and to use the Robinson-type wind receiving plate 7. Accordingly, the rotational force when the wind speed is low can be effectively obtained, the self-starting force of the straight blade type wind turbine 2 can be assisted, and the overall efficiency can be improved. Furthermore, the deployment mechanism 15 of the wind turbine support device 4 allows the wind turbine main body 1 to be turned toward the high-rise building structure 8 and stored in abnormal weather such as a typhoon, thereby preventing breakage. Further, the wind-out / retraction mechanism 16 allows the windmill main body 1 to be arranged at a position where the wind can be received most efficiently.

[0022]

As described above, according to the first aspect of the present invention, since the windmill main body can be installed so as to project laterally from the building by the windmill support device, the windmill is particularly generated in a valley such as a high-rise building. Electricity can be generated using the building wind efficiently. In addition, the pressure receiving member can obtain a rotational force when the wind speed is low, can assist the self-starting force of the small straight-wing wind turbine, and can improve the overall efficiency.

According to the second aspect of the present invention, the deployment mechanism of the wind turbine support device allows the wind turbine main body to be housed in the building at the time of a storm such as a typhoon, thereby preventing damage beforehand. Further, the wind turbine main body can be arranged at a position where air can be received most efficiently by the retracting mechanism.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an embodiment of a small wind turbine generator according to the present invention.

FIG. 2 is a plan sectional view of the small wind turbine generator.

FIG. 3 is a perspective view showing a wind turbine main body of the small wind turbine generator.

FIG. 4 is an explanatory view of the operation principle of the straight-wing type wind turbine device.

FIGS. 5A to 5E are explanatory views showing a conventional wind turbine device for power generation.

6 is a graph showing an output coefficient of the wind turbine device for power generation shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Windmill main body 2 Straight blade | wing windmill 3 Rotating shaft 4 Windmill support device 5 Generator with a speed-up device 7 Baffle plate 8 Building structure 12 Support post 13 Rotating arm 14 Retractable arm 15 Deployment mechanism 16 Retractable mechanism 31a, 31b Guide face plate 32a-32c Straight wing

Claims (2)

[Claims] 1. A wind turbine main body having a straight blade type wind turbine attached to a rotating shaft, a wind turbine support device for extending the wind turbine main body sideways from a high-rise building, and a generator connected to and linked to the wind turbine main body. A small-sized wind power generator, wherein a self-starting pressure receiving member that generates a driving torque when the wind power is small is provided on the straight-wing-type wind turbine of the wind turbine body. 2. A use position for projecting a support post having a windmill body at a tip end sideward from a building to a windmill support device;
2. The system according to claim 1, further comprising: a deployment mechanism rotatably supporting the retracted position with respect to the building, and a retractable mechanism capable of moving the wind turbine body toward and away from the building. Small wind turbines.