JP2936403B2 - Wind power generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine generator installed on the ground or the like.

[0002]

2. Description of the Related Art Among wind turbine generators that have been put into practical use, the one that is used most frequently because it has the highest efficiency and is simple in construction is located at the upper end of a support tower that stands on the ground or the like. A propeller, usually consisting of two or three blades, is provided so as to be rotatable about a horizontal axis and pivotable about a vertical axis, and by appropriate means, the rotating surface of the propeller is always perpendicular to the wind. It is an open type.

[0003] The propeller rotates at a speed according to the diameter and shape of the blade and the pitch thereof according to the wind speed. By driving the generator with this rotational force,
Wind power is converted to available electrical energy.

[0004]

Since the propeller is inherently rotated by a low-density air flow,
Even if its diameter and area are as large as possible, at most about 45% of the wind energy passing through the rotating surface of the propeller is recovered as usable energy.

According to the present invention, even if the outer diameter is the same as that of a conventional open type propeller, wind energy can be significantly more effectively recovered than a conventional one.
It is an object of the present invention to obtain a wind power generator capable of obtaining a highly efficient power generation effect.

[0006]

In order to achieve the above object, a wind power generator according to the present invention is configured as follows.

[0007] (1) a front end portion of the shaft line in the air guide tube having a cylindrical shape, as well as twists in a certain direction, the polarized fluid having a plurality of blades outer peripheral end is proximate the inner surface of the air guide tube, guide An impeller for driving a generator is provided at a rear end on the axis of the wind guide cylinder so as to be rotatable around the axis of the wind cylinder .

(2) In the above item (1), the air guide tube is made of a cylinder having a constant diameter.

(3) In the above item (1), the air guide tube is a trumpet-shaped member that expands forward.

(4) Any one of the above items (1) to (3)
And rotate the baffle, biased fluid and impeller around the vertical axis.
Attach to the substrate that has been made available.

(5) In the above item (4), the generator and its
The resulting transmission line is also mounted on the board.

[0012]

FIG. 1 shows a first embodiment of the apparatus of the present invention. In FIG. 1, the left side is the front.

[0013] A vertical tubular support shaft standing and fixed on the ground or the like.
At the upper end of (1), a point slightly forward from the center in the front-rear direction of the horizontal substrate (2) is swirled around the support shaft (1) through a tapered roller type thrust bearing (3). It is supported as it is.

On the substrate (2), a cylindrical air guide tube having a constant diameter is provided.
(4) is attached with support pieces (5) and (5).

A plurality of blades (6) (6) which are twisted in a fixed direction and whose outer peripheral end is close to the inner surface of the air guide tube (4) are provided at the front end on the axis of the air guide tube (4). Having a biased fluid (7),
The bearing (8a) supported by the support rods (8) and (8) has a pivot (7)
a) is pivotally supported so that it can rotate easily.
You.

The eccentric fluid (7) effectively twists the airflow from the front and deflects it in the centrifugal direction. Its size, shape and number are the most effective from an aerodynamic point of view. , And the resistance is determined to be small. Also, uneven fluid
By providing (7) rotatably, the eccentric fluid (7) is
The air flow is deflected while rotating by the air flow from the air.

At the rear of the air guide tube (4), on the axis of the air guide tube (4), there is an impeller (9) having substantially the same diameter as that of the eccentric fluid (7);
A small-diameter housing (10) for pivoting the housing is provided in that order.

The impeller (9) includes two blades (9a) (9a), and the housing (10) is fixed to the inside of the air guide tube (4) with supporting rods (11) and (11). ing. The rear end (10a) of the housing (10) has a sharp conical shape.

The dimensions, shapes, and the like of the respective parts of the impeller (9) and the housing (10) are determined so as to be the most effective and have a small resistance from an aerodynamic point of view similarly to the case of the uneven fluid (6). .

In the housing (10), there is provided a generator (13) connected to the rotating shaft (12) of the impeller (9).

[0021] Inner surface of air guide tube (4), uneven fluid (7), impeller
(9) The outer surface of the housing (10) is made of a material having a friction as small as possible with air, and is finished smoothly so as to minimize irregularities.

An accommodation space (15) is formed by providing a flat box-shaped bottom plate (14) integrally with a small gap on the lower surface of the substrate (2).

Immediately below the thrust bearing (3), a support (16) is protruded from the lower surface of the bottom plate (14), and a radial ball bearing (17) provided in the support (16) is And a portion slightly below the upper end of the support shaft (1).

The wires (18) (1) derived from the generator (13)
The brush (19) (1) passes through the accommodation space (15)
9) is a slip ring (20) provided on the outer surface of the support shaft (1).
Are in elastic contact. Each slip ring (20)
It is connected to a transmission line (21) that passes through the support shaft (1).

Next, the operation will be described. The substrate (2)
Because it can rotate around the spindle (1),
Alternatively, by appropriate detection / control means, the wind guide tube (4) is turned so that the front face always faces upwind.

The air flow that has flowed into the baffle (4) is
While being twisted by (7), while being deflected in the centrifugal direction, it is slightly pressurized and flows backward.

[0027] The airflow having a high velocity on the outer side of the rear side of the biased fluid (7) acts on an intermediate portion of the blade (9a) of the impeller (9) having the highest pressure receiving efficiency. On the other hand, only the low-speed airflow acts on the hub portion of the impeller (9), which originally has a low impeller driving effect.

Therefore, the efficiency of recovering the wind energy as a whole of the impeller (9) is considerably larger than that of the conventional wind turbine.

FIG. 2 shows a second embodiment of the present invention. In FIG. 2, the air guide tube (22) is in the form of a trumpet gently expanding forward, and the other parts are the same as those in FIG. Therefore, the same portions as those in FIG. 1 are denoted by the same reference numerals.

As shown in FIG. 2, the airflow flowing into the baffle (22) is gradually pressurized and increased in speed.
(9) The driving efficiency is higher than that of FIG.

[0031]

According to the present invention, even if the outer diameter of the wind guide tube is the same as the diameter of the impeller in the conventional open type propeller type wind power generator, it is much more efficient than the conventional one. In addition, the impeller can be rotated at a high speed, wind power can be effectively collected, and highly efficient power generation can be performed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view conceptually showing a first embodiment of a wind turbine generator of the present invention.

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

[Explanation of symbols]

 (1) Support shaft (2) Substrate (3) Thrust bearing (4) Baffle (5) Support piece (6) Blade (7) Uneven fluid (7a) Pivot (8) Support rod (8a) Bearing (9) Impeller (9a) Blade (10) Housing (10a) Rear end (11) Support rod (12) Rotating shaft (13) Generator (14) Bottom plate (15) Housing space (16) Support cylinder (17) Radial bearing (18) Conductor (19) Brush (20) Slip ring (21) Transmission line (22) Wind guide tube

Claims (5)

(57) [Claims] The front end portion of the shaft line in claim 1] air guide tube having a cylindrical shape, as well as twists in a certain direction, the polarized fluid having a plurality of blades outer peripheral end is proximate the inner surface of the air guide tube, guide
A wind power generator, wherein a wind turbine is provided so as to be rotatable around the axis of a wind tube , and an impeller for driving a generator is disposed at a rear end on the axis of the wind guide tube. 2. The wind power generator according to claim 1, wherein the wind guide tube is formed of a cylinder having a constant diameter. 3. The wind power generator according to claim 1, wherein the wind guide tube has a trumpet shape expanding forward. 4. A wind guide cylinder, a biased fluid and an impeller are rotated by a vertical shaft.
Attached to a substrate that can be turned
The wind power generator according to any one of claims 1 to 3. 5. The power generator and its transmission line are also mounted on a substrate.
The wind power generator according to claim 4, which is mounted on the wind power generator.