JP2018028308A - Windmill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical shaft type wind power prime mover capable of taking almost all of air quantity blown to a windmill, guiding it in a rotational direction of a rotary vane and making it function as rotation force to enhance efficiency, having a simple movable mechanism of a wind guide plate, having an inexpensive manufacturing cost, and facilitating maintenance.SOLUTION: A wind guide plate 7 is arranged outside a rotary vane 1 so as to be concentric with the rotary vane; the wind guide plate freely rotates at a fixed range of angle with its outside end vicinity as a center; an angle of the wind guide plate is changed by blown air; and almost all of wind blown to a wind mill is guided to a rotational direction of the rotary vane.SELECTED DRAWING: Figure 4

Description

The present invention relates to an improvement of a wind turbine used for a wind power prime mover or the like.

Various types of wind turbines exist and are used according to their characteristics. In the present invention, in a vertical flow type wind turbine such as a crossflow type that rotates in response to wind from any direction, most of the amount of air blown to the wind turbine is guided in the rotational direction of the rotor blades.

JP2012-241709 JP 2004-197643 A Utility model registration 3179856 US Pat. No. 5,463,257 US Patent Publication 2013-0302138

Wind turbines are roughly divided into those that rotate around a horizontal axis and those that rotate around a vertical axis. In either case, the wind energy blows onto the rotor blades to generate wind energy. Is converted into rotational motion by receiving a larger amount of airflow on the rotor blade without weakening the momentum of the wind.
The feature of vertical axis wind turbines such as the cross flow type is that they rotate in any direction, but the disadvantage is that the wind blown to the rotor blades turns the rotational axis around the rotating shaft. However, the other side acts as a drag force of rotation, so that the efficiency is impaired.
As a countermeasure, there is a wind guide plate on the outside of the rotor blade. The side that acts as a rotational force introduces wind, and the side that acts as a drag force guides only a part of the wind in the rotational direction of the rotor blade. The wind prevents the inflow and does not become a drag. The case literature is shown below.
Is a general air guide plate, and is arranged and fixed point-symmetrically about the axis of the rotor blade. As a result, the side acting as the rotational force introduces the wind, and the side acting as the drag prevents the inflow of the wind and only a part of the wind is guided in the rotation direction of the rotor blades. and Is a variable angle of the air guide plate. These are designed to close the air flow path to the rotor blades by changing the angle of the air guide plate with a motor or the like so that the rotor blades will not be damaged due to excessive rotation in the case of strong winds. . The fixed air guide plates are fixed and the remaining air guide plates are movable, the wind speed is detected, the movable air guide plates are synchronized with the chain, and the angle is changed. It does not guide almost all of the wind blown by the wind plate changing to an appropriate angle, and the structure is complicated and the manufacturing cost is high. Is to guide the wind by changing the angle of each baffle plate individually, but the method of changing the angle is manual or electric, the details of the mechanism to move are unknown, but it changes rapidly However, manual operation is not practical with respect to the change in wind direction, and the structure in which the wind direction and wind speed are detected and each of the wind guide plates is electrically driven in accordance with the detection is complicated and the manufacturing cost increases.

As described above, all of the conventional movable air guide plates are rotated manually or electrically around the center of each air guide plate. On the other hand, the movable wind guide plate of the present invention is designed such that the wind turbine center side swings around the outer end of each wind guide plate as a rotation center, and even if the wind direction changes, the angle is immediately and stably adjusted by the wind blown. It changes, and almost all of the air volume is guided in the direction of rotation of the rotor blades and works as a rotational force.

Vertical axis wind power that captures almost all of the airflow blown to the windmill, guides it in the direction of rotation of the rotor blades, and uses it as rotational force. It can be a prime mover.

It is the 1st example of this invention and is a figure of the B cross section of FIG. It is a figure of the A cross section of FIG. It is a 2nd example of this invention and is a figure of the cross section similar to FIG. It is a 3rd example of this invention, and is a figure of the cross section similar to FIG.

The present invention will be described below with reference to the drawings.
2 is a first example of the present invention, FIG. 1 is a cross-sectional view of B in FIG. 2, and FIG. 2 is a cross-sectional view of FIG.
The rotating blade 1 receives wind and rotates around the rotating shaft 2. A movable air guide plate 7 is disposed concentrically with the rotor blade 1 on the outer side of the rotor blade 1, and its outer end is connected to the air guide plate upper plate 3 and the air guide plate lower plate 4 via the air guide plate rotating shaft 6. It is rotatably engaged. The movable air guide plate 7 can swing around the air guide plate rotating shaft 6 and is immediately pushed by the blown wind to change its direction.
The wind guide plate upper plate 3 and the wind guide plate lower plate 4 are provided with a wind guide plate rotation restriction pin 5, and the angle of change of the movable wind guide plate 7 is restricted by the wind guide plate rotation restriction pin 5. The movable wind guide plate 7 does not swing beyond the wind guide plate rotation restricting pin 5 and the wind is guided in the direction in which the movable wind guide plate 7 faces. As a result, most of the wind from any direction blowing on the windmill is guided in the rotational direction of the rotary blade 1 with little resistance.

FIG. 3 shows a second example of the present invention and is a cross-sectional view similar to FIG.
In contrast to the first example, a fixed air guide plate 8 is provided between the rotary blade 1 and the movable air guide plate 7.
The fixed wind guide plate 8 is arranged point-symmetrically around the rotation axis 2 and is fixed to the wind guide plate upper plate 3 and the wind guide plate lower plate 4.
Since the fixed air guide plate 8 always guides the wind in the rotation direction of the rotor blade 1, the movable air guide plate 7 that guides the wind in combination with the fixed air guide plate 8 can increase the degree of freedom of the shape, and is more stable than the first example. By increasing the angle and making the plate shape a flat plate, the wind can be taken in more smoothly and guided in the rotational direction of the rotor blade 1 with less resistance.

FIG. 4 shows a third example of the present invention and is a cross-sectional view similar to FIG.
In contrast to the second example, the wind guide plate rotation restricting pin 5 is not provided, and the function is shared by the fixed wind guide plate 8.
The angle of the movable wind guide plate 7 can be changed within a range sandwiched between adjacent plates of the fixed wind guide plate 8, and the wind is along the state where the movable wind guide plate 7 and the fixed wind guide plate 8 overlap. Guided.
When the movable air guide plate 7 and the fixed air guide plate 8 are overlapped and continuous, the side on which the wind acts as the rotational force of the rotary blade 1 with the rotary shaft 2 as a boundary is substantially “straight”, and the rotor blade 1 is not substantially resisted. Guided, and on the opposite side, it is substantially “shaped” to guide the flow of the wind in the direction of rotation of the rotor blades 1.
As described above, the present application maintains the state in which all of the movable air guide plates 7 on the side to which the wind blows are directed to the rotor blade 1 in the direction in which the wind blows, regardless of the wind blowing from any direction.

Note that the present invention is not limited to the crossflow type windmill, but also applies to other types of vertical axis windmills.

The vertical axis wind turbine is an efficient wind turbine that can take in the wind blown to the wind turbine as much as the rotational force of the rotor blades, and is expected to be used for small and medium-sized generators such as households with limited site area. The

DESCRIPTION OF SYMBOLS 1 Rotating blade 2 Rotating shaft 3 Wind guide plate upper plate 4 Wind guide plate lower plate 5 Wind guide plate rotation restricting pin 6 Wind guide plate rotating shaft 7 Movable wind guide plate 8 Fixed wind guide plate

It is a reference figure and is a figure of the B cross section of FIG. It is a figure of the A cross section of FIG. It is a 2nd example of this invention and is a figure of the cross section similar to FIG. It is the 1st example of this invention, and is a figure of the cross section similar to FIG.

The present invention will be described below with reference to the drawings.
1 is a reference view , FIG. 1 is a cross-sectional view of B in FIG. 2, and FIG. 2 is a cross-sectional view of FIG.
The rotating blade 1 receives wind and rotates around the rotating shaft 2. A movable air guide plate 7 is disposed concentrically with the rotor blade 1 on the outer side of the rotor blade 1, and its outer end is connected to the air guide plate upper plate 3 and the air guide plate lower plate 4 via the air guide plate rotating shaft 6. It is rotatably engaged. The movable air guide plate 7 can swing around the air guide plate rotating shaft 6 and is immediately pushed by the blown wind to change its direction.
The wind guide plate upper plate 3 and the wind guide plate lower plate 4 are provided with a wind guide plate rotation restriction pin 5, and the angle of change of the movable wind guide plate 7 is restricted by the wind guide plate rotation restriction pin 5. The movable wind guide plate 7 does not swing beyond the wind guide plate rotation restricting pin 5 and the wind is guided in the direction in which the movable wind guide plate 7 faces. As a result, most of the wind from any direction blowing on the windmill is guided in the rotational direction of the rotary blade 1 with little resistance.

FIG. 3 shows a second example of the present invention and is a cross-sectional view similar to FIG.
In contrast to the reference diagram , a fixed air guide plate 8 is provided between the rotary blade 1 and the movable air guide plate 7.
The fixed wind guide plate 8 is arranged point-symmetrically around the rotation axis 2 and is fixed to the wind guide plate upper plate 3 and the wind guide plate lower plate 4.
Since the fixed wind guide plate 8 always guides the wind in the rotation direction of the rotor blade 1, the movable wind guide plate 8 that guides the wind in combination with it can increase the degree of freedom of the shape and is more stable than the first example. By increasing the angle and making the plate shape a flat plate, the wind can be taken in more smoothly and guided in the rotational direction of the rotor blade 1 with less resistance.

FIG. 4 is a first example of the present invention and is a cross-sectional view similar to FIG.
In contrast to the second example, the wind guide plate rotation restricting pin 5 is not provided, and the function is shared by the fixed wind guide plate 8.
The angle of the movable wind guide plate 7 can be changed within a range sandwiched between adjacent plates of the fixed wind guide plate 8, and the wind is along the state where the movable wind guide plate 7 and the fixed wind guide plate 8 overlap. Guided.
When the movable air guide plate 7 and the fixed air guide plate 8 are overlapped and continuous, the side on which the wind acts as the rotational force of the rotary blade 1 with the rotary shaft 2 as a boundary is substantially “straight”, and the rotor blade 1 is not substantially resisted. Guided, and on the opposite side, it is substantially “shaped” to guide the flow of the wind in the direction of rotation of the rotor blades 1.
As described above, the present application maintains the state in which all of the movable air guide plates 7 on the side to which the wind blows are directed to the rotor blade 1 in the direction in which the wind blows, regardless of the wind blowing from any direction.

Claims (1)

A wind guide plate is arranged on the outside of the rotor blade concentrically with the rotor blade, and the wind guide plate can be rotated within a certain range of angles around the outer edge, changing the angle according to the wind to be blown, and blowing to the windmill A vertical axis wind turbine that guides almost all of the wind in the direction of rotation of the rotor blades.