JP7245697B2 - vertical axis wind power generator - Google Patents

Description

The present invention relates to vertical axis wind turbine generators.

As a wind power generator, a wind turbine with a plurality of blades attached around a vertical axis is provided, and the wind turbine is rotated by wind power to drive a generator coupled to the vertical axis to generate power. has been proposed (see Patent Document 1).

Patent No. 4769236

By the way, it is conceivable to install such a vertical-axis wind turbine generator on a moving object such as a ship or a train, and to generate power using the wind force generated by the movement of the moving object.
However, since the vertical axis wind turbine generator does not have a very high energy utilization rate, there is room for improvement in securing the amount of power generated.
Therefore, it is conceivable to secure the amount of power generation by installing a plurality of vertical axis wind power generators, but simply increasing the number of vertical axis wind power generators will increase the installation space of the vertical axis wind power generators. end up
SUMMARY OF THE INVENTION It is an object of the present invention to provide a vertical-axis wind power generator that is advantageous in terms of securing the amount of power generated and miniaturizing the installation space.

In order to achieve the above object, the present invention provides a generator having a generator body, a rotating shaft projecting upward from the generator body, and a generator attached to the rotating shaft and rotating the rotating shaft by receiving wind. a gyro mechanism that is provided on the rotary shaft and rotates the rotary shaft in the same direction as the rotary shaft rotated by the blade body by tilting the rotary shaft with respect to a vertical line; A frame that is installed on the body and supports the main body of the generator, and a rotating shaft support that is provided at a portion of the frame above the main body of the generator and supports the rotating shaft so as to be rotatable and displaceable in the radial direction of the rotating shaft. wherein the rotating shaft includes an internal rotating shaft located inside the generator main body, and an internal rotating shaft located outside the generator main body and capable of rotating integrally with the internal rotating shaft via a power transmission mechanism and tilting. The wing body and the gyro mechanism are provided on the external rotating shaft which is connected to the rotating shaft.
Further, in the present invention, a bearing member having a bearing surface formed of a downwardly convex spherical surface is provided on the upper portion of the internal rotating shaft so as to be rotatable integrally with the internal rotating shaft, and the lower end of the external rotating shaft is the bearing surface. and the power transmission mechanism connects the external rotating shaft and the bearing member.
Further, the present invention provides a power generator having a power generator main body and a rotating shaft projecting upward from the power generator main body, a blade body attached to the rotating shaft and adapted to rotate the rotating shaft by receiving wind, and a gyro mechanism provided on a rotating shaft that rotates the rotating shaft in the same direction as that of the rotating shaft rotated by the blades by tilting the rotating shaft with respect to a vertical line; a frame for supporting a main body of the generator; and a rotating shaft supporting portion provided at a portion of the frame above the main body of the generator for supporting the rotating shaft so as to be rotatable and displaceable in a radial direction of the rotating shaft, The generator main body is supported by the frame so as to be tiltable and non-rotatable about the lower end of the rotating shaft.
Further, in the present invention, the frame is provided with a bearing member having a bearing surface formed of a downwardly convex spherical surface, and the lower part of the generator main body is placed on the bearing surface and supported so as to be tiltable and non-rotatable. It is characterized by
Further, the present invention provides a power generator having a power generator main body and a rotating shaft projecting upward from the power generator main body, a blade body attached to the rotating shaft and adapted to rotate the rotating shaft by receiving wind, and A gyro mechanism that is provided on a rotating shaft and rotates the rotating shaft in the same direction as the rotating shaft that is rotated by the blades, a frame that is installed on a moving body and supports the generator main body, and the power generator. and a rotating shaft supporting portion provided at a portion of the frame above the machine body for rotatably supporting the rotating shaft.
Further, in the present invention, the gyro mechanism comprises a flywheel rotatably supported by the rotating shaft about an axis perpendicular to the rotating shaft, and a spin motor for applying rotational force to the flywheel. Characterized by
Further, the present invention is characterized in that two flywheels are provided on the same axis with the rotation shaft interposed therebetween, and the two flywheels rotate in opposite directions.

According to the present invention, regardless of whether it is daytime or nighttime, when the moving body is stopped and there is wind, the rotating shaft is rotated by the wind force. Since the wind is generated and the moving body shakes, the rotating shaft is rotated by both the rotating force of the wind force and the rotating force of the precession of the flywheel, so the rotation of the rotating shaft is accelerated. This is advantageous in terms of increasing efficiency and ensuring the amount of power generated.
In addition, compared to the case where a plurality of vertical axis wind turbine generators are provided, only one rotating shaft and one generator are required, which is advantageous in reducing the installation space of the vertical axis wind turbine generators.
In addition, the external rotating shaft serves as a weight that swings in synchronism with the swinging of the frame, and the external rotating shaft functions as a TMD (tuned mass damper), which is advantageous in suppressing the swinging of the frame.
Further, if a bearing member having a bearing surface is provided rotatably integrally with the internal rotating shaft, and the lower end of the external rotating shaft is placed on the bearing surface, the external rotating shaft can be converted into a TMD (tuned mass) with a simple structure.・It is advantageous in functioning as a damper.
Further, according to the present invention, when the moving body is stopped and there is wind regardless of whether it is daytime or nighttime, the rotation shaft is rotated by the wind force. When it moves, wind is generated and the moving body shakes, so the rotating shaft is rotated by both the rotating force of the wind force and the rotating force of the precession of the flywheel, so the rotation of the rotating shaft is accelerated. , it is advantageous to increase the power generation efficiency and secure the power generation amount.
In addition, compared to the case where a plurality of vertical axis wind turbine generators are provided, only one rotating shaft and one generator are required, which is advantageous in reducing the installation space of the vertical axis wind turbine generators.
In addition, the external rotating shaft serves as a weight that swings in synchronism with the swinging of the frame, and the external rotating shaft functions as a TMD (tuned mass damper), which is advantageous in suppressing the swinging of the frame.
Further, if a bearing member having a bearing surface formed of a downwardly convex spherical surface is provided on the frame, and the lower part of the generator main body is placed on the bearing surface and supported so as to be tiltable and non-rotatable, a simple structure can be obtained. This is advantageous in making the rotating shaft function as a TMD (tuned mass damper).
Further, according to the present invention, when the moving body is stopped and there is wind regardless of whether it is daytime or nighttime, the rotation shaft is rotated by the wind force. When it moves, wind is generated and the moving body shakes, so the rotating shaft is rotated by both the rotating force of the wind force and the rotating force of the precession of the flywheel, so the rotation of the rotating shaft is accelerated. , it is advantageous to increase the power generation efficiency and secure the power generation amount.
In addition, since a mechanism for tiltably supporting the rotating shaft with respect to the frame is not required, it is advantageous in terms of simplification of the configuration.
In addition, compared to the case where a plurality of vertical axis wind turbine generators are provided, only one rotating shaft and one generator are required, which is advantageous in reducing the installation space of the vertical axis wind turbine generators.
Further, if the gyro mechanism is provided with a flywheel rotatably supported by the rotating shaft and a spin motor that imparts rotational force to the flywheel, it is advantageous in terms of simplification of the gyro mechanism.
In addition, when two flywheels rotating in opposite directions are provided as flywheels, the precession of the two flywheels increases the rotational force acting on the rotating shaft, thereby increasing the speed of rotation of the rotating shaft. This is more advantageous in terms of increasing power generation efficiency and securing power generation.

(A) is a front cross-sectional view of a vertical axis wind turbine generator according to a first embodiment, and (B) is a side cross-sectional view. 1 is a block diagram showing an electrical configuration of a vertical axis wind turbine generator according to an embodiment; FIG. It is a front cross-sectional view of a vertical axis wind turbine generator according to a second embodiment. It is a front cross-sectional view of a vertical axis wind turbine generator according to a third embodiment.

(First embodiment)
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, a vertical axis wind turbine generator 10A of the present embodiment includes a frame 12, a generator 14, a rotating shaft 16 of the generator 14, a rotating shaft support portion 18, and blade bodies 20. , and a gyro mechanism 22 .
The frame 12 is installed on a mobile object such as a ship that moves on the sea or a mobile object that moves on the ground such as a train. It is attached to an installation location such as the top of the train via an attachment member (not shown).
The frame 12 connects a plate-shaped lower frame 1202 to be placed at an installation location, a plate-shaped side frame 1204 standing upward from the entire circumference of the lower frame 1202, and the upper edge of the side frame 1204. A plate-shaped upper frame 1206 is provided.

The generator 14 is supported by the frame 12 and in this embodiment is mounted on the lower frame 1202 , which is a portion of the frame 12 below the upper frame 1206 and thus is mounted inside the frame 12 .
The generator 14 has a generator main body 1402 and a rotating shaft 16 protruding upward from the generator main body 1402 .
In the present embodiment, the rotating shaft 16 can rotate integrally with the inner rotating shaft 16A located inside the generator main body 1402 and the inner rotating shaft 16A located outside the generator main body 1402 via the power transmission mechanism 26. It includes an external rotating shaft 16B that is connected to and tiltable.
A bearing member 24 having a downwardly convex spherical bearing surface 2402 is provided above the internal rotary shaft 16A so as to be rotatable integrally with the internal rotary shaft 16A.
A lower end 1602 of the external rotating shaft 16B rests on a bearing surface 2402 .
The power transmission mechanism 26 connects the external rotating shaft 16B and the bearing member 24 so as to be rotatable together. For example, the power transmission mechanism 26 is composed of a universal joint.
Therefore, the lower end 1602 of the outer rotating shaft 16B can tilt on the bearing surface 2402 about the lower end 1602, and can rotate integrally with the inner rotating shaft 16A via the power transmission mechanism 26.
The generator 14 rotates the rotor inside the generator main body 1402 to generate power by rotating the inner rotating shaft 16A together with the outer rotating shaft 16B.

The rotating shaft support portion 18 is provided at a portion of the upper frame 1206 above the generator main body 1402, and supports the outer rotating shaft 16B so as to be rotatable and displaceable in the radial direction of the outer rotating shaft 16B.
An insertion hole 1210 through which the external rotating shaft 16B is inserted is provided in the upper frame 1206, and the rotating shaft support portion 18 includes a bearing 1802 provided in the inserting hole 1210 for rotatably supporting the external rotating shaft 16B, and an elastic member 1804 that supports the bearing 1802 so as to be displaceable in the radial direction of the insertion hole 1210 .
The elastic member 1804 can be made of a rubber material or various conventionally known elastic materials such as a spring.
Therefore, the lower end 1602 of the external rotating shaft 16B is placed on the bearing surface 2402, and the intermediate portion thereof is supported by the bearing 1802 and the elastic member 1804, so that the external rotating shaft 16B can tilt about the lower end 1602. will be supported by

The blade body 20 is attached to the rotating shaft 16 and rotates the rotating shaft 16 by receiving wind.
In this embodiment, the blade body 20 is provided at the portion of the external rotation shaft 16B located above the upper frame 1206. As shown in FIG.
A plurality of blade bodies 20 are provided at intervals in the circumferential direction of the rotating shaft 16, and each blade body 20 is a vertically elongated rectangle extending from a portion near the upper end of the rotating shaft 16 to a portion near the upper frame 1206. It has a shape.
As the blade body 20, blade bodies of various conventionally known vertical axis wind turbine generators can be used.

The gyro mechanism 22 is provided on the rotating shaft 16 and rotates the rotating shaft 16 in the same direction as the rotating shaft 16 rotated by the blade body 20 by tilting the rotating shaft 16 with respect to the vertical line A.
In this embodiment, the gyro mechanism 22 is provided at the external rotation shaft 16B located below the upper frame 1206. As shown in FIG.
As shown in FIGS. 1 and 2 , the gyro mechanism 22 includes a flywheel 28 , a flywheel chamber 30 and a spin motor 32 and is provided inside the frame 12 .
The flywheel 28 is rotatably supported by a support shaft 34 projecting from the rotation shaft 16 along an axis orthogonal to the external rotation shaft 16B. rotatably supported on the
In this embodiment, two flywheels 28 are provided so as to face each other on the same axis with the external rotating shaft 16B interposed therebetween.
The flywheel chamber 30 accommodates each flywheel 28 and is airtightly constructed. The flywheel chamber 30 is held at a negative pressure by a vacuum pump 36 shown in FIG. In this way, the power consumption of the spin motor 32 is suppressed.
The spin motor 32 applies rotational force to the flywheel 28 to rotate the flywheel 28 at high speed. are configured to rotate the two flywheels 28 in mutually opposite directions via a power transmission mechanism (not shown).

Next, the electrical configuration will be described with reference to FIG.
The vertical axis wind turbine generator 10A includes a charging device 38 and a battery (secondary battery) 40 .
The charging device 38 charges the battery 40 with electric power generated by the generator 14 .
The battery 40 stores electric power, is removed from the vertical axis wind turbine generator 10A, is transported, and is supplied to consumers. Alternatively, it is consumed as energy for moving bodies such as trains and ships.
Also, part of the electric power of the battery 40 is supplied to the spin motor 32 and the vacuum pump 36 to drive the spin motor 32 and the vacuum pump 36 . The power consumption of these spin motors 32 and vacuum pumps 36 is very small compared to the power generated by the generator 14 .
Alternatively, the power generated by the generator 14 may be directly supplied to the spin motor 32 and the vacuum pump 36 .

Next, the operation of the vertical axis wind turbine generator 10A of this embodiment will be described.
When the ship or train on which the vertical axis wind turbine generator 10A is installed moves and the wind blows against the vertical axis wind turbine generator 10A, the wind hits the blade body 20 and rotates the external rotating shaft 16B, generating a torque. rotates the internal rotating shaft 16A through the power transmission mechanism 26, which drives the generator 14 to generate electricity, and charges the battery 40 through the charging device 38. As shown in FIG.
Furthermore, when the wind hits the blade body 20 or the frame 12 shakes with the movement of the moving body, the external rotating shaft 16B tilts around its lower end 1602. tilting causes the flywheels 28, which are rotating in opposite directions, to precess. Since this precession acts as a rotational force to rotate the rotating shaft 16, the rotating shaft 16 is also rotated by this rotating force, and the generator 14 is driven to generate power, and the battery 40 is charged via the charging device 38. be done.
That is, the rotation shaft 16 is rotated by both the rotational force due to the wind force and the rotational force due to the precession of the flywheel 28, the generator 14 generates power, and the battery 40 is charged via the charging device 38. .

According to this embodiment, regardless of whether it is daytime or nighttime, when the moving body is stopped and there is wind, the rotating shaft 16 is rotated via the blade body 20 by the wind force, so that power generation is not performed. Of course, when the moving body moves, wind is generated and the moving body shakes, so that the rotary shaft 16 is rotated by both the rotational force of the wind force and the rotational force of the precession of the flywheel 28. Since the rotation of the shaft 16 is accelerated, it is advantageous in terms of increasing power generation efficiency and ensuring the amount of power generated.
In addition, compared to the case where a plurality of vertical axis wind turbine generators are provided, only one rotating shaft 16 and one generator 14 are required, which is advantageous in reducing the installation space of the vertical axis wind turbine generator. .
Therefore, for example, it is possible to install the vertical axis wind turbine generator 10A with high power generation efficiency even in a mobile object with limited space.

In addition, although one flywheel 28 may be provided, two flywheels 28 are provided with the rotating shaft 16 interposed therebetween as in the present embodiment, and the rotation directions of the two flywheels 28 are opposite to each other. Then, when the rotating shaft 16 tilts with respect to the vertical line A, both of the two flywheels 28 precess in the same rotational direction.
Therefore, the rotational force acting on the rotating shaft 16 due to the precession motion becomes greater, so the rotation of the rotating shaft 16 is accelerated, which is more advantageous in enhancing the power generation efficiency and securing the power generation amount.
Moreover, it goes without saying that three or more flywheels 28 may be provided.

Further, if the external rotating shaft 16B is tiltably supported with respect to the frame 12, the external rotating shaft 16B swings in synchronism with the frame 12 when the frame 12 is shaken by the wind.
Therefore, the external rotating shaft 16B becomes a weight that swings in synchronism with the shaking of the frame 12, and the external rotating shaft 16B functions as a TMD (tuned mass damper) to suppress the shaking of the frame 12.
In addition, when the wind is strong like during a typhoon, the shaking of the frame 12 can be suppressed, which is advantageous in protecting the frame 12 and the rotating shaft 16 .

(Second embodiment)
Next, a second embodiment will be described with reference to FIG.
In the following embodiments, parts and members that are the same as those in the first embodiment are denoted by the same reference numerals as in the first embodiment, and descriptions thereof are omitted, and different parts are emphasized. explain.
As shown in FIG. 3, in the second embodiment, the generator main body 1402 having the rotating shaft 16 protruding upward is supported so as to be able to tilt about the lower end 1602 of the rotating shaft 16 and not to rotate. 1 embodiment.
That is, a single rotating shaft 16 protrudes upward from the generator main body 1402, and an intermediate portion of the rotating shaft 16 is supported by a rotation support portion 18 so as to be rotatable and displaceable in the radial direction of the rotating shaft 16. .
The lower surface of the generator main body 1402 is configured as an upper bearing surface 1404 that is a downwardly convex spherical surface.
The lower frame 1202 is provided with a bearing member 42 having a lower bearing surface 4202 formed of a downwardly convex spherical surface. .
Therefore, the generator main body 1402 is supported by the frame 12 so as to be able to tilt about the lower end 1602 of the rotating shaft 16 but not to rotate.

In the second embodiment, as in the first embodiment, when the moving body is stopped and there is wind regardless of whether it is daytime or nighttime, the wind force rotates via the blade body 20. Since the shaft 16 is rotated, power is generated, and when the moving body moves, wind is generated and the moving body shakes. Since the rotating shaft 16 is rotated by both of and, the rotation speed of the rotating shaft 16 is accelerated, which is more advantageous in increasing the power generation efficiency and securing the power generation amount.
Further, as in the first embodiment, the external rotating shaft 16B functions as a TMD (tuned mass damper) to increase the efficiency of power generation by wind power and secure the amount of power generation. Also, it is advantageous in protecting the rotating shaft 16 .

(Third Embodiment)
Next, a third embodiment will be described with reference to FIG.
The third embodiment differs from the first and second embodiments in that the rotating shaft 16 is rotatably and non-tiltably supported with respect to the frame 12 .
That is, the rotating shaft support portion 18 is composed of a bearing 1802 provided at a portion of the upper frame 1206 above the generator main body 1402 and rotatably supporting the outer rotating shaft 16B. considered immovable.
In addition, the rotating shaft 16 includes an inner rotating shaft 16A located inside the generator body 1402 and an outer rotating shaft 16B located outside the generator body 1402 and connected to the inner rotating shaft 16A so as to rotate together. It is configured.
The generator 14 rotates the rotor inside the generator main body 1402 to generate power by rotating the inner rotating shaft 16A together with the outer rotating shaft 16B.

According to the third embodiment, since the rotating shaft 16 is supported so as not to tilt with respect to the frame 12, the rotating shaft 16 does not function as a TMD (tuned mass damper). Effects similar to those of the second embodiment are obtained.
That is, when the frame 12 shakes with the movement of the moving body, the rotating shaft 16 shakes together with the frame 12, and therefore the rotating shaft 16 tilts with respect to the vertical line A. A rotational force is generated.
Therefore, regardless of whether it is daytime or nighttime, when the moving body is stopped and there is wind, the rotating shaft 16 is rotated via the blades 20 by the wind force, so that power is generated. When the flywheel 28 moves, wind is generated and the moving body shakes, so that the rotating shaft 16 is rotated by both the rotating force due to the wind force and the rotating force due to the precession of the flywheel 28, so the rotation of the rotating shaft 16 increases. This is more advantageous in terms of increasing the efficiency of power generation and ensuring the amount of power generated.
In addition, unlike the first and second embodiments, a mechanism for tiltably supporting the rotating shaft 16 with respect to the frame 12 is not required, which is advantageous in simplifying the configuration.

In the above embodiments, the case where the vertical axis wind turbine generator is installed in a moving object such as a ship or a train has been described. Alternatively, it may be an airplane that flies in the air, and various conventionally known moving bodies on which the vertical axis wind turbine generator of the present invention is installed can be used.

10A, 10B, 10C vertical axis wind turbine generator 12 frame 1210 insertion hole 14 generator 1402 generator main body 1404 upper bearing surface 16 rotating shaft 16A internal rotating shaft 16B external rotating shaft 1602 lower end 18 rotating shaft support portion 1802 bearing 1804 elastic member 20 blade body 22 gyro mechanism 24 bearing member 2402 bearing surface 26 power transmission mechanism 28 flywheel 30 flywheel chamber 32 spin motor 34 spindle 42 bearing member 4202 lower bearing surface

Claims (7)

a generator having a generator body and a rotating shaft protruding upward from the generator body;
a blade body that is attached to the rotating shaft and rotates the rotating shaft by receiving wind;
a gyro mechanism that is provided on the rotating shaft and rotates the rotating shaft in the same direction as that of the rotating shaft rotated by the blades by tilting the rotating shaft with respect to a vertical line;
a frame installed on a mobile object and supporting the generator main body;
a rotating shaft supporting portion provided at a portion of the frame above the generator body and supporting the rotating shaft rotatably and displaceably in a radial direction of the rotating shaft;
The rotating shaft is connected to an internal rotating shaft positioned inside the generator main body, and to the inner rotating shaft positioned outside the generator main body via a power transmission mechanism so as to be integrally rotatable and tiltable. comprising an external rotary shaft,
The blade body and the gyro mechanism are provided on the external rotating shaft,
A vertical axis wind power generator characterized by: A bearing member having a bearing surface formed of a downwardly convex spherical surface is provided above the internal rotating shaft so as to be rotatable integrally with the internal rotating shaft,
a lower end of the external rotating shaft resting on the bearing surface;
The power transmission mechanism connects the external rotating shaft and the bearing member,
The vertical axis wind turbine generator according to claim 1, characterized in that: a generator having a generator body and a rotating shaft protruding upward from the generator body;
a blade body that is attached to the rotating shaft and rotates the rotating shaft by receiving wind;
a gyro mechanism that is provided on the rotating shaft and rotates the rotating shaft in the same direction as that of the rotating shaft rotated by the blades by tilting the rotating shaft with respect to a vertical line;
a frame installed on a mobile object and supporting the generator main body;
a rotating shaft supporting portion provided at a portion of the frame above the generator body and supporting the rotating shaft rotatably and displaceably in a radial direction of the rotating shaft;
The generator main body is supported by the frame so as to be tiltable and non-rotatable about the lower end of the rotating shaft.
A vertical axis wind power generator characterized by: The frame is provided with a bearing member having a bearing surface formed of a downwardly convex spherical surface,
A lower portion of the generator main body is placed on the bearing surface and supported so as to be tiltable and non-rotatable,
The vertical axis wind turbine generator according to claim 3, characterized in that: a generator having a generator body and a rotating shaft protruding upward from the generator body;
a blade body that is attached to the rotating shaft and rotates the rotating shaft by receiving wind;
a gyro mechanism that is provided on the rotating shaft and rotates the rotating shaft in the same direction as that of the rotating shaft that is rotated by the blades;
a frame installed on a mobile object and supporting the generator main body;
a rotating shaft supporting portion provided at a portion of the frame above the generator body for rotatably supporting the rotating shaft;
A vertical axis wind turbine generator, comprising: The gyro mechanism is
a flywheel rotatably supported on the rotating shaft about an axis orthogonal to the rotating shaft;
A spin motor that applies rotational force to the flywheel,
The vertical axis wind turbine generator according to any one of claims 1 to 5, characterized in that: Two flywheels are provided on the same axis across the rotation shaft,
the two flywheels rotate in opposite directions;
The vertical axis wind turbine generator according to claim 6, characterized in that:

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