JP2003278637A - Wind mill for wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind mill for a wind power generator capable of holding the number of revolution of a rotating body to a stipulated range by controlling the number of revolution corresponding to always changing wind power and automatically stopping the rotation of the rotating body when the number of revolution exceeds a fixed limit of the number of revolution. <P>SOLUTION: In this wind mill 1 for the wind power generator, many wind receiving blades 5 and mounted at a centrifugal part of the rotating body 3 in parallel to a vertical main shaft 2. The wind receiving blades 5 are deflected and controlled corresponding to the number of revolution of the rotating body 3 in a stipulated angle range for radial rays 3a passing the center of the main shaft 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine of a wind power generator, and in particular, the direction of the wind receiving blades of the wind turbine is automatically controlled to change in accordance with the number of rotations of the rotary body. The present invention relates to a wind turbine of a wind power generator capable of controlling the rotation speed of the wind turbine.

[0002]

2. Description of the Related Art Conventionally, the wind power recovery rate of a wind turbine is about 45% for a horizontal axis wind turbine and about 35% for a vertical axis wind turbine. Therefore, efficient horizontal axis wind turbines are the mainstream of wind power generators. It is said that these conventional small wind power generators are economically incompatible unless the wind blows at a wind speed of 4 m / s or more for 2000 hours or more per year, and the power generation capacity is 300 w.
The thing of about ~ 500w is the mainstream.

On the other hand, the inventor of the present application utilizes the rotational inertia of the rotating body and the principle of leverage to make the vertical axis wind turbine whose performance far exceeds the wind recovery rate of the horizontal axis wind turbine even in the vertical axis wind turbine ( For example, Japanese Patent Application No. 2001-397751, Japanese Patent Application No. 2001-013467, Japanese Patent Application No. 2002-03730.
No. 9, 2002-55268, etc.) was developed.

[0004]

In this vertical axis wind power generator, even if the blade position is about 1 m in radius from the vertical main axis,
With a light breeze, it was possible to continuously generate power of 3kW to 5kW. However, since the rotation performance is good even with a slight wind, the rotation speed is too high depending on the high-speed wind, so maintaining stable rotation against changing wind speed is a major issue, and rotation control against typhoons is an issue. Became.

According to the present invention, the rotational speed of the rotating body is controlled within a prescribed range and kept constant in response to constantly changing wind force, and when the limit of the prescribed rotational speed is exceeded, the rotating body is rotated. The object is to provide a wind turbine with a wind power generator that can be automatically stopped.

[0006]

The present invention takes the following technical means in order to solve the above problems.

(1) A large number of wind receiving blades are attached to the centrifugal portion of the rotating body in parallel with the vertical main shaft, and the wind receiving blades have a specified angle with respect to the radiation passing through the center of the main shaft at that position. A wind turbine of a wind power generator whose direction is controlled according to the number of revolutions of the rotating body in the range.

(2) The rotating body is provided with a diverting means for diverting the wind receiving blades, and the diverting means is automatically controlled by an automatic controller functioning by a rotation numerical value by a rotation sensor. The wind turbine of the wind power generator described in (1) above.

(3) A large number of wind receiving blades are mounted on the centrifugal portion of the rotating body in parallel with the vertical main axis, and the wind receiving blades have variable vanes pivotally attached to the rear portion of the main portion. Is a wind turbine of a wind power generator whose deflection is controlled corresponding to the rotation speed of the rotating body within a specified angle range with respect to the radiation passing through the center of the main shaft at that position.

(4) The rotating body is provided with a diverting means for diverting the variable blades of the wind receiving blades, and the diverting means is automatically controlled by an automatic controller functioning by a rotation numerical value by a rotation sensor. A controlled wind turbine of the wind power generator according to (3) above.

(5) The specified angular range is 73.5 degrees to 106.5 degrees with respect to radiation passing through the center of the main axis. .

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of a main part of a wind turbine of a wind power generator. On the vertical main shaft (2) of the wind turbine (1),
(3) is installed horizontally. The rotating body (3) has, for example, a radius of 50 cm to 200 cm and a weight of 100 kg to 150 kg.
It is of a degree.

The rotating body (3) has a substantially flywheel shape, and the machine part (3b) partially disposing the deflecting means (4) has a main shaft.
It is formed in a hollow shape on the radiation (3a) passing through the center of (2). In the centrifugal part of the rotating body (3) on the radiation (3a), the fixed shaft (6)
Are arranged in parallel with the main shaft (2), and the fixed shaft (6) has a wind receiving blade.
The shaft part (7) of (5) is pivotally mounted, and a large number of wind receiving blades (5) are attached to the main shaft (2).
In parallel with, is arranged at regular intervals around the rotating body (3).

As shown in FIG. 2, the cross section of the wind receiving blade (5) is thick like an airfoil (5a) and leeward (5b) in the shape of an airplane wing.
Is thin, the inner side surface (5c) is substantially flat, and the outer side surface (5d) is set to an arc surface. The rotating part (6) is formed on the inner side surface (5c), and the mounting part (8) for attaching the diverting means (4) to the front and rear thereof.
Are formed.

In FIG. 2, the diverting means (4) is a rotating part.
(4a), parallel link (4b), and drive machine (9), the rotating part (4a) is set at a position close to the main shaft, and is rotatably fixed by the fixed shaft (4c). The rotating part (4a) has a mounting part (4
The base end of the parallel link (4b) is axially attached via d), and the tip end of the parallel link (4b) is axially attached to the attachment portion (8) of the wind receiving blade (5).

As shown in the drawing, the base end surface of the rotating portion (4a) is formed in the shape of a sector gear (4e). The drive machine
(9) is, for example, a servomotor, and the worm (9a) mounted on the drive shaft is meshed with the sector gear (4e) of the rotating portion (4a). Although this rotating part (6) is set in the middle of the wind receiving blade (5) in the figure, it can be located close to the windward side (5a), in which case the link (4d) will be at the leeward side (5b). ) Can be one.

By this, the windward side (5a) of the wind receiving blade (5)
When wind is received on the outside surface than the wind speed passing through the inside surface (5c) side
The wind speed passing through the (5d) side becomes faster, and a force is generated to move the wind receiving blade (5) in the centrifugal direction of the rotating body (3), and the windward side (5a) of the wind receiving blade (5). A rotational force for rotating the rotating body (3) is applied in the direction.

Therefore, if the windward side (5a) leans toward the main shaft (2), the rotation speed of the rotor (3) becomes faster if the wind speed is the same, and the windward side (5a) tilts away from the main shaft. When,
The rotation speed of the rotating body (3) decreases.

FIG. 3 is a front view showing a vertical cross section of a main part of the wind turbine (1). In the figure, reference numeral (10) is an automatic controller, (11) is a rotation sensor that measures the number of rotations of the rotating body (3) and inputs it to the automatic controller (10), and (12) is a power generation unit. The power generation section (12) is internally connected to the main shaft (2) or a generator (AC or DC) is installed via a transmission (not shown).

When the wind power generator (13) having the above-mentioned structure is installed on, for example, the roof of a building, the wind turbine (1) can rotate and generate electricity even at a wind speed of 4 m / s or less. For example, wind speed 6
When the wind of m / s blows, the rotation speed of the rotating body (3) naturally increases and the power generation capacity also increases.

The rotation sensor (11) measures the number of revolutions per minute of the rotating body (3), and the measured value is input to the automatic controller (10). To adjust the rotation speed when the wind speed is 4 m / s, the wind receiving blade (5)
The automatic controller (10) calculates how much the direction of (1) should be changed. Based on the calculation, the control command enters the drive machine (9) from the automatic controller (10), rotates the drive machine (9) forward or reverse, and also controls the rotation speed and time of the drive machine (9). To be done.

By the forward / reverse rotation of the driving machine (9), the wind receiving blade (5), through the deflecting means, the inner surface (5c) intersecting the radiation (3a) passing through the center of the main shaft (2) in the plane. The radiation (3a)
It is possible to change the direction from approximately 30 degrees to approximately 150 degrees. Within this changeable angle range, the specified changeable angle range for automatic control is arbitrarily set, for example, from about 70 degrees to about 110 degrees.

For example, when the driving machine (9) rotates in the forward direction, the deflecting means (4) directs the windward side (5a) of the wind receiving blade (5) toward the main axis (2). The direction of the windward (5a) is the plane (2)
Inner surface of wind vane (5) intersecting with radiation (3a) passing through the center of
The rotation efficiency becomes maximum when (5c) is 73.5 degrees.

When the driving machine (9) rotates in the reverse direction, the diverting means
(4) directs the windward side (5a) of the wind receiving blade (5) away from the main shaft (2). The direction of this windward (5a) is radiation (3a)
The rotation efficiency becomes the minimum when the inner surface (5c) of the wind receiving blade (5) intersecting with is 106.5 degrees.

Therefore, the relational numerical value between the wind speed and the rotational speed of the rotating body (3) is preset in the automatic controller (10). As a result, a generator suitable for the power generation capacity depending on the rotation speed of the rotating body (3) at the required minimum wind speed is used.

The wind power generator (13) set in this way is
When the wind speed is within a certain range, the power is generated by the rotation speed within the specified range at the set angle of the wind receiving blade (5) set within the specified angle range. When the wind continuously blows above the certain wind speed and continuously exceeds the specified rotation speed, the automatic controller (10) automatically changes the direction based on the detection value of the rotation sensor (11). The direction of the wind receiving blade (5) is automatically controlled via (4) to reduce the efficiency of the wind receiving blade (5) to receive the wind, and the rotation speed of the rotating body (3) is regulated. To maintain.

When the rotation speed lower than the specified rotation speed continues, the automatic controller (10) detects the wind receiving blade ( The direction of 5) is changed to a direction in which the efficiency of receiving wind is improved (the windward side of the blade is directed to the main axis direction), and the rotational speed of the rotating body (3) is increased.

In the case of a typhoon, the rotation sensor (11) controls the direction of the wind receiving blades (5) while detecting the number of rotations, and when the rotation value exceeds a certain value in the strong wind, the deflection means (4) ), The direction of the wind receiving blade (5) is changed to the position where the efficiency of receiving the wind is the lowest. As a result, the wind hitting the wind receiving blade (5) does not affect the rotation of the rotating body (3).

FIG. 4 is a schematic plan view showing the essential parts of the wind receiving blades and the diverting means according to the second embodiment. This wind receiving blade (55)
The variable wings (55b) are pivotally attached to the rear part of the main part (55a) by a fixed shaft (6) like flaps of an airplane. Variable wings (5
A diverting projection (55c) is provided at the base end of 5b).

The diverting means (44) is composed of a base (44b) having a female thread at the base of the link (44a) and a driving machine (9) for rotating a feed screw (9b) screwed to the female thread. ing. The tip of the link (44a) is pivotally attached to the deflecting protrusion (55C) of the variable vane (55b).

When the driving machine (9) rotates forward, the feed screw
With the rotation of (9b), the link (44b) retracts and the variable blade (55
B) The tail moves away from the main axis. This allows the rotating body (3)
The wind efficiency that affects the rotation of the vehicle increases and the number of rotations increases.

When the drive machine (9) rotates in the reverse direction, the link (44b) advances as the feed screw (9a) rotates, and the tail of the variable blade (55B) approaches the main axis (2). As a result, the wind force effect on the rotating body (3) is reduced, and the rotation speed of the rotating body (3) is reduced. The turning angle of the variable blade (55b) is the same as the turning angle of the wind receiving blade (4) of the previous example.

The present invention is not limited to the above-described embodiment, but the design can be changed appropriately according to the purpose. Although the wind receiving blades (5) are directly arranged on the rotating body (3), the wind receiving blades can be attached to the tips of the arms protruding radially from the rotating body (3). The diverting means can be, for example, a fluid pressure cylinder and a piston. As the driving machine, an electromagnet or other known one can be used. The variable blade of FIG. 4 may have a variable front portion.

[0034]

The present invention constructed as above has the following features.
It has the following excellent effects.

(1) In the invention described in claim 1, a large number of wind receiving blades are mounted in the centrifugal portion of the rotating body in parallel with the vertical main shaft, and the wind receiving blades are installed at the positions of the main shaft. With respect to the radiation passing through the center, the deflection is controlled within the specified angle range in accordance with the rotation speed of the rotating body, so even if the wind force is constantly occurring, the direction of the wind receiving blades is automatically controlled. Moreover, there is an effect that the number of rotations of the rotating body can be maintained evenly and stable power generation can be performed. Further, even with respect to a strong wind such as a typhoon, the direction of the wind receiving blades can be changed so that the rotational force due to the wind is minimized.

(2) In the invention described in claim 2, the rotating means is provided with a changing means for changing the wind receiving blades, and the changing means is an automatic function functioning by a rotation numerical value by a rotation sensor. Since it is automatically controlled by the controller, there is an effect that the rotation speed of the rotating body can always be accurately controlled.

(3) According to the invention described in claim 3, a large number of wind receiving blades are mounted on the centrifugal portion of the rotating body in parallel with the vertical main axis, and the wind receiving blades are provided on the rear portion of the main portion. The variable vane is pivotally attached, and the variable vane is deflection-controlled to correspond to the rotation speed of the rotating body within a specified angle range with respect to the radiation passing through the center of the main shaft at that position. Does not move,
There is an effect that the number of rotations of the rotating body can be controlled according to the wind force.

(4) In the invention described in claim 4, the rotating body is provided with a diverting means for diverting the variable blades of the wind receiving blades, and the diverting means is a rotation numerical value by a rotation sensor. Since it is automatically controlled by the functioning automatic controller, there is an effect that the number of rotations of the rotating body can always be accurately controlled.

(5) In the invention described in claim 5, the specified angle range in which the wind receiving blades and the variable vanes are deflected is 73.5 degrees to 106.5 degrees with respect to the radiation passing through the center of the main axis. Since it is specified in the range of, the response to the theoretically favorable wind force received by the wind receiving blade, that is, the range that maximizes the wind force or minimizes the influence of the wind force is specified, and the direction of the wind receiving blade is specified. Has the effect of being easy to control.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a wind turbine of a wind power generator.

FIG. 2 is a schematic plan view of a main part of a wind receiving blade and a deflection means.

FIG. 3 is a front view of a main part of a wind turbine of a wind power generator.

FIG. 4 is a schematic plan view of a main part of a wind receiving blade and a diverting means showing a second embodiment.

[Explanation of symbols]

(1) Windmill (2) Spindle (3) Rotating body (3a) Radiation (3b) Machine part (4) Means of turning (4a) Base (4b) Parallel link (4c) Fixed shaft (4d) Mounting part (4e) Sector gear (44) Means of turning (44a) Base (44b) Link (5) Wind receiving blade (5a) Windward (5b) Downwind (5c) Inside surface (5d) Outside surface (55) Wind receiving blade (55a) Main part (55b) Variable wings (55c) Diverting body (6) Fixed shaft (7) Shaft (8) Mounting part (9) Drive machine (9a) Worm (9b) Feed screw (10) Automatic controller (11) Rotation sensor (12) Power generation section (13) Wind generator

Claims (5)

[Claims] 1. A large number of wind receiving blades are mounted on a centrifugal portion of a rotating body in parallel with a vertical main shaft, and the wind receiving blades have a specified angle range with respect to radiation passing through the center of the main shaft at that position. The wind turbine of the wind power generator is characterized in that the deflection control is performed according to the rotation speed of the rotating body. 2. The rotating body is provided with a diverting means for diverting the wind receiving blades, and the diverting means is automatically controlled by an automatic controller functioning by a rotation numerical value by a rotation sensor. The wind turbine of the wind power generator according to claim 1. 3. A large number of wind receiving blades are mounted on a centrifugal portion of a rotating body in parallel with a vertical main axis, and the wind receiving blades have variable vanes pivotally attached to the rear portion of the main portion, and the variable vanes are A wind turbine of a wind power generator, characterized in that deflection control is performed corresponding to the rotation speed of a rotating body within a specified angle range with respect to radiation passing through the center of the main shaft at that position. 4. The rotating body is provided with a diverting means for diverting the variable blades of the wind receiving blades, and the diverting means is automatically controlled by an automatic controller functioning by a rotation numerical value by a rotation sensor. The wind turbine of the wind power generator according to claim 3, wherein 5. The wind force according to claim 1, wherein the specified angle range is 73.5 degrees to 106.5 degrees with respect to the radiation passing through the center of the main axis. Generator windmill.