JP3049020U - Wind power generator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To drive a generator using wind power effectively despite its relatively small diameter. SOLUTION: A spiral wind guiding ridge 10 is provided on an inner surface of a wind guide cylinder 4 and is inclined in the axial direction toward the rear, and a generator 8 is provided inside a rear end of the wind guide cylinder 4. A propeller 6 linked to drive the propeller.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wind turbine generator installed on the ground or the like.

[0002]

[Prior art]

 Conventionally, among wind power generators that have been put into practical use, the most efficient ones and the ones that are frequently used because of their simple configuration are usually located at the upper end of a support tower that is erected on the ground or the like. A propeller composed of two or three blades is provided so as to be rotatable about a horizontal axis and rotatable about a vertical axis, and by appropriate means, the rotating surface of the propeller is always perpendicular to the wind. It was done.

[0003] The propeller rotates at a speed according to the diameter and shape of its blades and its pitch according to the wind speed. By driving the generator with this rotational force, the wind power is converted into usable electric energy. Is done.

[0004]

[Problems to be solved by the invention]

 Since the propellers are inherently rotated by the flow of low-density air, even if their diameter and area are as large as possible, a maximum of about 45% of the wind energy passing through the rotating surface of the propellers is available. The fact is that the energy is simply recovered.

According to the present invention, even if the outer diameter is the same as that of a conventional propeller, wind energy can be remarkably effectively recovered as compared with the conventional one, so that a highly efficient power generation effect can be obtained. The purpose is to obtain a wind power generator.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the wind turbine generator of the present invention is configured as follows.

[0007] (1) A spiral wind guiding ridge that is inclined in the axial direction and extends rearward is provided on the inner surface of a trumpet-shaped wind guide cylinder that expands forward, and a rear end portion of the wind guide cylinder. A propeller linked to drive the generator is installed inside the.

(2) A spiral torsion guide plate inclined in the axial direction and directed rearward is provided on the inner surface of the trumpet-shaped guide tube that expands forward and the rear end of the guide tube A propeller linked to drive the generator is installed inside the unit.

(3) On the inner surface of the straight tubular baffle, a spiral baffle is provided which is inclined in the axial direction and is directed rearward, and a generator is provided inside the rear end of the baffle. A propeller linked to drive is installed.

(4) A spiral torsion guide plate inclined in the axial direction toward the rear is provided on the inner surface of the straight tubular guide tube, and a generator is provided inside the rear end of the guide tube. A propeller linked to drive is installed.

(5) The wind power generator according to any of the above (1) to (4) is mounted on a substrate that can be turned around a vertical axis.

(6) In the above item (5), the generator and the transmission line by the generator are also mounted on the board.

[0013]

[Embodiment of the invention]

 FIG. 1 shows one embodiment of the device of the present invention. In FIG. 1, the left side is the front side.

At the upper end of the vertical tubular support shaft (1) which is erected and fixed on the ground or the like, a part slightly forward from the center of the horizontal substrate (2) in the front-rear direction is provided with a tapered roller type thrust bearing (3). It is supported so as to be able to turn around the support shaft (1) lightly through the shaft.

On the base plate (2), a trumpet-shaped air guide tube (4) expanding forward is attached with a support piece (5).

A propeller (6) rotatable around its axis is disposed inside the rear end of the air guide tube (4), and a rotating shaft (7) integral with the propeller (6) is: The generator (8) fixed to the substrate (2) is driven via appropriate gears (9) (9).

The side surface shape of the air guide tube (4) is such that the air flowing in from the front end thereof and the air flowing backward along the outer surface smoothly flow without generating a vortex or an excessive pressure reducing portion. It is defined.

The inner and outer surfaces of the air guide tube (4) are made of a material having a minimum friction with air, and are finished smoothly so as to minimize irregularities.

On the inner surface of the air guide tube (4), a spiral air guide ridge (10) that is gently inclined in the axial direction is formed.

An accommodation space (12) is formed by forming a flat box-shaped bottom plate (11) integrally with a small gap on the lower surface of the substrate (2).

Immediately below the thrust bearing (3), a support (13) is provided on the lower surface of the bottom plate (11), and a radial ball bearing (14) provided in the support (13) is provided. A portion slightly below the upper end of the support shaft (1) is supported.

The generator (8) is fixed in the accommodation space (12) at the lower rear side of the propeller (6).

The conductors (15) and (15) derived from the generator (8) pass through the housing space (12), and the brushes (16) and (16) at the ends thereof support the support shaft (1). Elastically contact with a slip ring (17) provided on the outer surface of the member. Each slip ring (17) is connected to a transmission line (18) that passes through the inside of the support shaft (1).

Next, the operation will be described. Since the substrate (2) is rotatable around the support shaft (1), the front surface of each air guide tube (4) is always wind-driven by wind pressure or by appropriate detection and control means, as is well known. Turn upwards.

For this reason, the airflow that has flowed into the front portion of the baffle 4 is accelerated in the baffle 4 and then discharged from the rear end under pressure.

The airflow accelerated in the air guide tube (4) is twisted by the spiral air guide ridge (10) on the inner surface of the air guide tube (4), so that the air flow is increased compared to the center portion. The speed of the peripheral part becomes large.

The airflow having a high velocity in the peripheral portion contributes to driving the propeller (6), and the velocity of the airflow in the central portion where the propeller (6) driving effect is originally low is low. Can be suppressed. That is, since the airflow velocity in the central part decreases as the airflow velocity in the peripheral part increases, the high-speed airflow acts on the peripheral part of the propeller (6) having the highest pressure receiving efficiency.

[0028] Accordingly, since the pressure receiving efficiency is low, and the presence of the rotary shaft (7) and bearings, etc., the pressure velocity at the center of the propeller (6) having a high air resistance is relatively low, so that the overall The efficiency of wind energy recovery by the propeller (6) is high.

FIGS. 2 and 3 show another embodiment of the present invention.

In FIG. 2 and FIG. 3, instead of forming the air guide ridge (10) as shown in FIG. 1 on the inner surface of the air guide tube (4), a spiral shape that is gently inclined in the axial direction is used. A torsional air guide plate (19) is inserted into the air guide tube (4) from the front and fixed appropriately. Other parts are the same as those in FIG. 1, and the same parts are denoted by the same reference numerals. It is clear that the same operation and effect as in FIG. 1 can be exerted even in this case.

FIG. 4 is different from FIG. 2 in that the air guide tube (20) is formed in a straight cylindrical shape, and a torsion air guide plate (21) is inserted and fixed inside the tube. Parts similar to those in FIG. 1 are denoted by the same reference numerals. Even in the case of FIG. 4, it is clear that the intended effect can be exhibited because the peripheral airflow velocity is high.

[0032]

[Effect of the invention]

 (a) According to the present invention, even if the outer diameter of the wind guide tube is the same as the diameter of the propeller in the conventional propeller type wind power generator, the propeller is rotated at high speed with several times the air amount of the conventional one. Wind power can be effectively recovered and efficient power generation can be achieved.

(B) According to the sixth aspect, it is possible to easily collect and use the power generated by a large number of wind power generators of the present invention.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view conceptually showing one embodiment of a wind power generator of the present invention.

FIG. 2 is a view similar to FIG. 1 showing another embodiment.

FIG. 3 is a perspective view of a torsional baffle plate in FIG. 2;

FIG. 4 is a view similar to FIG. 1, showing still another embodiment.

[Explanation of symbols]

 (1) Support shaft (2) Substrate (3) Thrust bearing (4) Wind guide tube (5) Support piece (6) Propeller (7) Rotary shaft (8) Generator (9) Gear (10) Wind guide ridge (11) Bottom plate (12) Housing space (13) Support tube (14) Radial bearing (15) Conductor wire (16) Brush (17) Slip ring (18) Transmission line (19) Torsional wind guide plate (20) Wind guide tube (21) Twisted air guide plate

Claims (6)

[Utility model registration claims] 1. An inner surface of a trumpet-shaped air guide tube that expands forward and is provided with a spiral air guide protrusion that is inclined in the axial direction and goes rearward, and is inside a rear end portion of the air guide tube. A wind turbine generator, further comprising a propeller linked to drive the generator. 2. A helical torsional baffle plate that is inclined in the axial direction and extends rearward on the inner surface of a trumpet-shaped baffle tube that expands forward, and a rear end of the baffle tube. A wind power generator, wherein a propeller linked to drive a generator is disposed inside the wind turbine. 3. A helical wind guiding ridge that is inclined in the axial direction and goes rearward on an inner surface of the straight tubular air guide tube, and a generator is provided inside a rear end portion of the wind guide tube. A wind power generator, comprising a propeller linked to drive. 4. A spiral torsion guide plate inclined in the axial direction and directed rearward on the inner surface of the straight tube guide tube, and a generator is provided inside the rear end of the guide tube. A wind power generator, comprising a propeller linked to drive. 5. The air guide tube and the propeller are mounted on a substrate capable of turning around a vertical axis.
5. The wind power generator according to any one of 4. 6. The wind power generator according to claim 5, wherein the generator and the transmission line by the generator are also mounted on the substrate.