Vertical-axis wind turbine

Abstract

When paddle-type wind turbines, which are used for speed measurement, are used for wind power generation, the power generation efficiency is low because the multiple wind-receiving parts are fixed in a bowl shape. [Solution] The vertical-axis wind turbine of the present invention is characterized in that each of a plurality of bowl-shaped wind receivers, the size of which of the openings changes by expansion and contraction, is connected by a guide rod to one end of a piston that is held inside a rotating body and biased by a coil spring, a cam wheel is attached to the tip of a cam that rotates on a pivot axis with a wind direction guide rod to which wind receiving blades are attached, the rotation of the cam causes the cam wheel to come into contact with the piston, the piston to press the guide rod and extend the bottom of the wind receiver, and the rotating body is connected to a generator.

Description

Technical Field

[0001] The present invention relates to a wind power generation device, and particularly to a vertical-axis wind power generation device.

Background Art

[0002] A paddle-type windmill that rotates around a vertical axis and is shaped like that used in a wind speed meter is well known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When using a paddle-type windmill used in a wind speed meter for wind power generation, since a plurality of wind receiving parts have a bowl-shaped fixed shape, the problem is that the power generation efficiency is low.

Means for Solving the Problems

[0005] To solve the above problems, in the vertical-axis wind power generator of the present invention, each of a plurality of bowl-shaped wind receivers whose opening sizes change by expansion and contraction is held in a rotating body and is connected to one end of a piston biased by a coil spring by a guide rod, and a cam wheel is attached to the tip of a cam that rotates about a support shaft of a wind direction guiding rod having wind receiving blades attached to its tip, and by the rotation of the cam, the cam wheel abuts on the piston, and the piston presses the guide rod to Facing the wind head-on extend the bottom of the wind receiver, and the rotating body is connected to a generator.

Effects of the Invention

[0006] According to the vertical-axis power generation device of the present invention, the wind receiver deforms significantly according to the wind direction, allowing it to efficiently capture wind. This increases the rotational speed of the rotating body and improves the power generation efficiency of the generator. [Brief explanation of the drawing]

[0007] [Figure 1] This is a side cross-sectional view of the vertical-axis power generation device of the present invention in its first state. [Figure 2] This is a plan view of the inside of the rotating body of the vertical-axis power generation device of the present invention. [Figure 3] This is a side cross-sectional view of the vertical-axis power generation device of the present invention in its second state. [Figure 4] This is a plan cross-sectional view of the vertical-axis power generation device of the present invention. [Figure 5] This is an enlarged view of the main part near the piston of the vertical-axis power generation device of the present invention. [Modes for carrying out the invention]

[0008] The embodiment of the present invention features an improved structure for a wind-receiving section used in a vertical-axis power generation device, with a variable size wind-receiving section for efficient wind reception. The details will be described below with reference to the embodiments. [Examples]

[0009] Figure 1 is a side cross-sectional view of the vertical-axis power generation device of the present invention in its first state. Figure 2 is a plan view of the inside of the rotating body of the vertical-axis power generation device of the present invention. Figure 5 is an enlarged view of the main part near the piston of the vertical-axis power generation device of the present invention. In Figures 1 and 2, one end of four connecting pipes 12 are attached to the rotating body 10 connected to the generator 16 at 90° intervals in plan view, and a wind receiver 5 equipped with a bellows 3 is attached to the other end of the connecting pipes 12. A guide rod 11 is inserted inside the connecting pipes 12, and as shown in Figure 5, one end of the guide rod 11 is connected to a piston 4 biased by a coil spring 9 held in a cylinder 17, and the other end of the guide rod 11 is connected to the inner surface of the wind receiver 5. The bellows 3 expands and contracts due to the longitudinal movement of the guide rod 11, thereby changing the size of the wind receiver 5. Furthermore, one end of the wind direction guide rod 8 to which the wind-receiving vane 13 is attached is fixed to a cam 6 having a cam wheel 7 at its tip, and the cam wheel 7 is positioned to contact the piston 4. The cam 6 rotates on the wind direction guide rod 8 as a pivot axis according to the wind direction. Note that Figure 1 shows the state of the wind-receiving vane 13 when the wind is blowing from upwind 14 to downwind 15. In this case, the cam wheel 7 and the piston 4 are not in contact in the drawing, so the bellows 3 of the two wind receivers 5 in the drawing are in a contracted state, and the opening of the wind receiver 5 is smaller compared to when the bellows 3 is extended.

[0010] Figure 3 is a side cross-sectional view of the vertical-axis power generation device of the present invention in its second state. Figure 4 is a plan cross-sectional view of the vertical-axis power generation device of the present invention. Figure 3 shows a state in which the wind is blowing from a direction perpendicular to the plane of the paper. In this case, the cam wheel 7 comes into contact with one piston 4 and pushes out the guide rod 11 against the spring force of the coil spring 9, so the bellows 3 of the wind receiver 5 extend and the opening of the wind receiver 5 becomes larger compared to the state in which the bellows 3 is contracted. Also, as shown in Figure 4, only the bellows 3 of the wind receiver 5 that receives the wind direction 2 directly in front of it extends, widening the opening of the wind receiver 5 and taking in a large volume of air to rotate in the rotation direction 1.

[0011] In this way, the cam 6 rotates in accordance with the movement of the wind-receiving blade 13, pushing out the piston 4 and enlarging the opening of the wind receiver 5 in conjunction with the wind direction, thereby efficiently receiving wind. As a result, the generator 16 connected to the rotating body 10 that rotates the wind receiver 5 can generate power efficiently. Furthermore, the wind receiver 5 of the present invention can be forcibly enlarged even in light winds. In this embodiment of the vertical-axis power generation device of the present invention, there are four wind receivers 5, but the invention is not limited to multiple wind receivers. Moreover, if the rotating wind receivers are arranged in multiple stages, such as two or more, in the vertical direction instead of a single stage, power generation can be made even more efficient. [Explanation of Symbols]

[0012] 1. Direction of rotation 2 Wind direction 3. Bellows 4 pistons 5 Wind receiver 6 Cam 7 Camshaft 8 Wind direction guide rod 9 Coil springs 10. Solids of revolution 11 Guide rod 12 connecting pipes 13 Wind-receiving feathers 14 Upwind 15 Downwind 16 Generators 17 cylinders

Claims

[Claim 1] A vertical-axis wind turbine is characterized in that multiple bowl-shaped wind receivers, whose opening size changes by expansion and contraction, are each connected by a guide rod to one end of a piston held within a rotating body and biased by a coil spring; a cam wheel is attached to the tip of a cam that rotates on a pivot axis, with a wind direction guide rod having wind receiving blades attached to its tip; the rotation of the cam causes the cam wheel to come into contact with the piston, causing the piston to press the guide rod and extend the bottom of the wind receiver to receive the wind direction directly in front of it; and the rotating body is connected to a generator.

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