JP4325821B2 - Wind pressure open / close type vertical axis wind turbine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vertical axis wind turbine in which blades that automatically open and close by wind pressure are arranged around a vertical rotation axis, and wind is efficiently converted into rotational energy.
[0002]
[Prior art]
Conventional vertical axis type wind turbines are typically known as Darius type and Saponius type, but Darius type generally rotates by a lift action at the time of a strong wind of 12 m or more, but has almost no starting force. The Saponius type can be started even in low winds, but since the difference between the drag and the reaction force is small, the speed is low and the efficiency is very low.
[0003]
[Problems to be solved by the invention]
In the Saponius type of a conventional vertical axis type wind turbine, the drag force against the wind cancels out the drag force against the wind, so the efficiency is lowered. In addition, the wind receiving area cannot be adjusted during strong winds, so the rotational speed is forcibly reduced by mechanical brakes, electromagnetic brakes, etc., and there is a problem that a strong force is applied to the blades, leading to breakage. It was.
[0004]
The present invention winds at a large angle during low winds, reduces the drag with blades opened at a small angle during strong winds, responds quickly to a wide range of winds from low to high wind speeds, and is extremely safe and efficient. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the wind pressure open / close type vertical axis wind turbine of the present invention, 2 to 4 sets of blades that automatically open and close by the wind pressure are mounted around the vertical axis, and the wind receiving area of the drag and reaction force Increase the difference so that it rotates efficiently even if it is taken in a low wind.
[0006]
A centrifugal force ring weight is attached to the internal beam so that safe rotation is possible even in strong winds, and the blades are forced by pulling the opening / closing adjustment drawstring using the force that automatically moves to the outer periphery during overspeed rotation. The wind turbine is closed and the resistance to wind is reduced, so that the wind can be passed more safely, thereby preventing the wind turbine from being destroyed by strong wind.
[0007]
The wind pressure automatic opening / closing blade is almost closed due to the wind pressure toward the wind, and the cross section with respect to the wind is thin and almost free of force. When the blade receives the wind, it widens the angle and spreads the blade to full force. When it is located in the middle belt, it is half-opened and has a lifting effect.
[0008]
Install a weak spring inside the wind pressure automatic opening / closing blade, or attach a rubber spring strip, etc. on the outside of the blade so that the blade opens in the normal state, of course, inside so as not to exceed the optimum opening / closing degree. Adjust with an adjustment strap.
[0009]
By attaching a circular outer ring so as to surround the outer periphery of the opening and closing blades, the structure is secured, and the efficiency is improved by substituting the flywheel.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the invention will be described based on an example with reference to the drawings.
In FIG. 1, a circular structure 9 such as a bicycle hub is mounted around a vertical rotation axis 6, and a blade mounting arm 2 and a blade inner beam 3 are mounted on the hub structure. A circular outer ring 10 is attached to the outer periphery.
[0011]
In the embodiment shown in FIG. 2, the opening / closing blade 1 is assembled by sandwiching the blade mounting arm 2 and the blade inner beam 3. The upper and lower plates of the opening / closing blade 1 are connected by a hinge ring 12, and an opening / closing rubber spring strip 11 is attached to the outside.
[0012]
The opening / closing adjustment pull string 5 and the blade inner beam 3 are passed through the centrifugal opening / closing weight 4 and the opening / closing pulley 7 is connected to the opening / closing ring 8.
[0013]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0014]
By attaching an openable / closable blade to the vertical rotating shaft, it can efficiently receive and rotate even in low winds.
[0015]
Safe rotation speed control is possible even with an overspeed rotation during strong winds by the centrifugal force application automatic opening and closing device.
[0016]
A flywheel effect can be expected by attaching the outer ring of the blade. ,
[0017]
Can respond immediately to wind from all directions. It can handle a wide range of wind speed changes from low speed to high speed.
[0018]
There is no need for high tower pillars like propeller type wind turbines, and there is very little risk of lightning strikes.
[0019]
Because the wind noise is small, it can be installed on the rooftop of a building in the city.
[0020]
Since the shape of the blade is simple, the design is relatively easy.
[0021]
When the output is increased, it can be easily increased by stacking several wind units.
[Brief description of the drawings]
FIG. 1 is a structural perspective view of an open / close vertical axis wind turbine.
FIG. 2 is a perspective view showing an open / closed state of three blades.
FIG. 3 is a partially cutaway side view showing an opening / closing internal mechanism of a blade.
FIG. 4 is a partially cutaway side view showing a wind power unit.
FIG. 5 is a partially cutaway plan view showing a wind power unit.
FIG. 6 is a side view showing a power generator in which wind power units are stacked.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Opening and closing blade 14 Thrust rotation bearing 2 Blade attachment arm 15 Radial rotation bearing 3 Blade inner beam 16 Rotary shaft coupling 4 Centrifugal opening / closing ring weight 17 Circular outer ring suspension wire-
5 Opening / Closing Adjustment Pulling Cord 18 For Suspension Wire-Fastening 6 Vertical Rotating Shaft Shaft Color Ring 7 Opening / Closing Pulley 19 Generator 8 Opening / Closing Ring 9 Central Circular Structure 10 Circular Outer Ring 11 Blade Spring Opening / Opening Rubber Spring Band 12 Hinge Ring 13 Wind Power Unit Assembly frame

Claims (1)

  The blade mounting arm (2) and the blade inner beam (3) centered on the vertical rotation axis (6) are placed on the inner beam of the structure mounted on the outer ring (10). Centrifugal ring weight (4) A windmill characterized by the use of an acceleration-preventing open / close blade that utilizes the phenomenon of sliding outward due to rotational centrifugal force.

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