JPH0617745A - Vertical shaft sail-wing windmill having laterally long blade - Google Patents

Abstract

PURPOSE:To overcome operation delaying property of soft canvas to enhance conformity to the wind by applying interaction between a weight function of an elastic guide weight and spring restoring force of an elastic body while forming a blade into a laterally long shape. CONSTITUTION:A blade frame 2 is formed into a nearly laterally long shape with width of blade height being short and blade chord length being rather long and canvas 3 is fitted thereto. An elastic guide weight 4 equipped with an elastic body 4A at a rear edge part and fitted tightly to the canvas 3 is supported by fore and aft rotary parts 4B. Because of wind velocity, the canvas 3 is pulled by the elastic guide weight 4, the elastic body 4A is stretched to full length in the downwind direction, and the wind is released rearward to produce lift so as to turn a blade 1 forward. Next, at the position where the position of the blade 1 is rotated by 180 deg., the canvas 3 and the elastic guide weight 4 operate in the reverse direction to increase rotation speed. Since the elastic body 4A is equipped in order to enhance operation function of the elastic guide weight 4, the elastic guide weight 4 functions to enhance conformity of the canvas 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine for performing wind turbine power generation using wind energy, and more specifically, it was developed to improve the function of a wind turbine blade of a vertical axis sail wing wind turbine. .

[0002]

2. Description of the Related Art In the prior art of a vertical axis sail wing wind turbine, as shown in FIG. 1A, a vertical wind turbine having a long blade height and a short chord length is shown. As described above, the range of the rotation operating range of the wind turbine blade is large, and the incidental facilities are also large, so the performance is inferior to other vertical axis wind turbines such as Darius wind turbine and gyro mill wind turbine (not shown). Thus, the wind turbine power generation was not implemented. That is, the example of the laterally elongated sail wing wind turbine blade forming method of the present invention did not exist in the prior art.

[0003]

The basis of wind turbine performance is determined by the shape and configuration of the wind turbine blade, which is an energy converter. Next, considering the material of the blade, the sail wing wind turbine is different from the other propeller type or Darrieus wind turbine (not shown) because of the cloth-like canvas material.
Since the blade of (1) is made of a hard material, it has a fast responsiveness to the wind, and the sail wing wind turbine material is softer than the wind turbine and has a slower response to the wind. Examining the problem to be solved of the wind turbine blade 1 based on the drawing, the canvas 3 of FIG. 4 is attached to the blade frame 2 and the operating state in which the lifting force is generated by the operation of the lateral motion of the canvas is shown in FIG. . Next, in the operating state of the canvas, the blade is manufactured with a constant thickness, so that the center of gravity is not determined, and the blade has a corresponding delay to the wind speed and an operation delay limited by the connection attached to the blade frame 2. There is a fatal problem that causes the deterioration of the function of. An object of the present invention is to solve the energy problem by providing a highly functional wind turbine blade 1 having a quick response to the wind by overcoming the delay of the operation of the flexible canvas and reducing the operation range of the rotation of the blade occupying the space. It was developed with the purpose of contributing to.

[0004]

In order to solve the problem, the structure of the blade of the wind turbine of the present invention will be described with reference to the drawings. The blade frame 2 shown in FIG. 4 is formed to have a short wing height and a slightly long chord length and a substantially horizontal length, and the canvas 3 is attached thereto. In order to operate the attached canvas and improve the function of the canvas, an elastic body 4A is provided at the trailing edge of the canvas and the elastic guide weight 4 is attached in close contact with the canvas, and then the elastic guide weight 4 is operated. In order to smooth the
I support you. The wind turbine blade 1 configured as described above is fixed to the blade support 5 to form a fixed blade canvas actuation type blade. Next, the blade support 5 is a two-bladed blade connected to the wind turbine rotating shaft 7 via the blade connecting portion 6. (Fig. 3) or a three-bladed (Fig. 2) wind turbine.

A wind turbine blade having the above structure.
The most ideal shape for generating lift force in the conventional hydrodynamics by constructing the blade frame 2A of the above into a rocket shape is applied to the wind turbine blade of the present invention to further improve the blade function and develop the high performance wind turbine blade 1. did.

[0006]

The function of each part of the wind turbine blade of the present invention having the above construction will be described with reference to the plane operation diagram of FIG. 6 and the operation principle diagram of FIG. FIG. 6 The wind velocity (a) is blowing from above. The wind velocity causes the canvas 3 to be pulled by the elastic guide weight 4 and acts downward in the drawing, so that the elastic body 4A is in a fully extended state and allows the wind to escape backward. As a result, lift force is generated and the blade acts in the direction of arrow B to rotate. Next, when the position of the blade in FIG. 7 is in the lower position in the drawing, the canvas 3 and the elastic guide weight 4 act downward to increase the rotation speed. Next, an elastic body 4A is provided to enhance the function of operating the elastic guide weight 4, and the function of the elastic guide weight 4 is provided to increase the responsiveness of the canvas 3. Is characterized by applying the interaction between the function of the weight of the elastic guide weight 4 and the restoring force of the spring of the elastic body 4A to overcome the delay of the wind of the canvas 3 and the performance of the wind turbine blade 1 formed horizontally. Will be the action of improving.

In the action of the rocket-shaped blade frame 2A of the blade frame 2A of claim 2, since the elastic guide weight 4 for acting the canvas 3 is provided, the blade frame 2A improves the action of the canvas. As a function of the rocket-shaped body during which the lift is generated to rotate, the leading edge is small, then increases at a steep angle and decreases toward the rear. It acts as a form that generates lift regardless of the position of the inner blade, and functions as a wind turbine blade 1 that rotates at a higher speed.

[0008]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 2 shows an example of a three-blade sail wing wind turbine in which the blades are horizontally long. The wind turbine blade 1 is fixedly attached to the blade support 5, and the blade support 5 is attached via the blade connecting portion 6 to the wind turbine rotating shaft 7. Showing a state in which the wind turbine having the above-mentioned configuration is operated through a power transmission system to operate a generator (not shown)

FIG. 3 shows a two-bladed wind turbine in which the blade frame 2A of the wind turbine blade 1 having the above-described structure is formed into a rocket shape, and the blade support 5 is formed into an airfoil to improve the performance of the wind turbine.

[0010]

As described above, since the shape of the wind turbine blade 1 of the sail wing wind turbine is horizontally long,
The installation range occupying the space of the device is small, and it is robust and highly safe. Next, by using a blade equipped with an elastic induction weight 4 that operates the canvas, it is excellent in maneuverability in wind turbine performance and other propeller type wind turbines and Darrieus. Compared to a wind turbine, it has a comparable wind turbine output and is extremely superior in terms of production cost as a feature of the sailwing wind turbine.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional sail wing wind turbine in which a wind turbine blade is vertically elongated. FIG. 2 is a perspective view of an embodiment of a sail wing wind turbine in which the wind turbine blade of the present invention is horizontally elongated. Fig. 4 is a perspective view of a wind turbine blade of Fig. 4 having two blades of a sail wing wind turbine formed in a rocket shape. Fig. 4 is a side view of an embodiment of the wind turbine blade of the present invention. Side view FIG. 6 is a plane operation diagram showing an operating state of the wind turbine blade of the present invention. FIG. 7 is a principle diagram of operation of the wind turbine blade of the present invention.

[Explanation of symbols]

1 is a wind turbine blade 2 is a blade frame 2A is a rocket-shaped blade frame 3 is a canvas 4 is an elastic guide weight 4A is an elastic body 4B is a rotating part 5 is a wing post 6 is a blade connecting part 7 is a wind turbine rotating shaft

Claims (2)

[Claims] 1. In a blade configuration of a wind turbine blade in a vertical axis sail wing wind turbine, a blade frame (2), a canvas (3) attached to the blade frame and an elastic body (4A) provided behind the canvas to operate the canvas. The wind turbine blade 1 constituted by the elastic guide weight 4 which is supported by the rotating portion 4B provided at the front and rear and is attached in close contact with the canvas is formed in a horizontally long shape with a short blade width and a slightly long chord length. The wind turbine blade 1 characterized by being fixedly attached to the wing support column 5,
The blade support 5 is connected to the wind turbine rotating shaft 7 via a blade connecting portion 6. A vertical axis sail wing wind turbine having horizontally elongated blades, which is a vertical axis sail wing wind turbine configured as described above. 2. A vertical axis sail wing wind turbine in which the blade of claim 1 is formed in a horizontally long shape, the front of the blade frame 2A of the wind turbine blade constructed in accordance with claim 1 is a rocket-shaped blade.