JP3050467U - Wind power generator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a wind turbine generator, even if the outer diameter is the same as that of a conventional open type propeller, wind energy is significantly more effectively recovered than the conventional one, and the efficiency is improved. So that a high power generation effect can be obtained. SOLUTION: A biased fluid 7 having a plurality of blades 6 which are twisted in a certain direction and whose outer peripheral end is close to the inner surface of the air guide tube 4 is provided at an axial front end of a cylindrical air guide tube 4. A generator impeller 9 for driving the generator is provided at the rear end on the axis of the baffle 4.

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 is an open type.

[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 when the outer diameter is the same as that of a conventional open type propeller, wind energy can be remarkably effectively recovered as compared with the conventional type, and a highly efficient power generation effect can be obtained. It is intended to obtain a wind power generator that can be obtained.

[0006]

Means for Solving the Problems In order to achieve the above object, the wind power generator of the present invention is configured as follows.

(1) A biased fluid having a plurality of blades, which are twisted in a fixed direction and whose outer peripheral end is close to the inner surface of the baffle, is provided at the front end on the axis of the cylindrical baffle, An impeller for driving the generator is arranged at the rear end on the axis of the baffle.

(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 baffle tube has a trumpet shape that expands forward.

(4) In any one of the above items (1) to (3), the uneven fluid is fixed on the axis of the air guide tube.

(5) In any one of the above items (1) to (3), the biased fluid is rotatable around the axis of the air guide tube.

(6) In any one of the above items (1) to (5), the air guide tube, the eccentric fluid, and the impeller are attached to a substrate that can be turned around a vertical axis.

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

[0014]

[Embodiment of the invention]

 FIG. 1 shows a first 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 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 substrate (2), a fixed-diameter cylindrical air guide tube (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). The imbalanced fluid (7) is fixed by supporting rods (8) and (8).

The biased 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.

At the rear of the baffle (4), on the axis of the baffle (4), an impeller (9) having substantially the same diameter as the eccentric fluid (7) and a small-diameter Housings (10) are 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 the support rods (11) and (11). Have been. The rear end (10a) of the housing (10) has a sharp conical shape.

The dimensions, shapes, and the like of each part 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, as in the case of the uneven fluid (6). .

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

The inner surface of the air guide tube (4), the eccentric fluid (7), the impeller (9), and the outer surface of the housing (10) are made of a material that has a minimum friction with air, and the unevenness is as small as possible. It is finished smoothly so that

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 provided on the lower surface of the bottom plate (14), and a radial ball bearing (17) provided in the support (16) is A portion slightly below the upper end of the support shaft (1) is supported.

The conductors (18) and (18) derived from the generator (13) pass through the accommodation space (15), and the brushes (19) and (19) at the ends thereof are connected to the outer surface of the support shaft (1). It is in elastic contact with the slip ring (20) provided at the bottom. Each slip ring (20) is connected to a transmission line (21) that passes through the inside of the support shaft (1).

Next, the operation will be described. Since the substrate (2) is freely rotatable around the support shaft (1), the substrate (2) is rotated by wind pressure or by appropriate detection / control means so that the front surface of the air guide tube (4) always faces upwind. You.

The airflow that has flowed into the air guide tube (4) is twisted by the biased fluid (7), is deflected in the centrifugal direction, and flows rearward in a slightly pressurized state.

The airflow having a high velocity on the outer side rearward 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 higher 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 a trumpet-shaped member that gently expands 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, so that the driving efficiency of the impeller (9) is higher than that of FIG. And become bigger.

FIG. 3 shows a third embodiment of the present invention. In FIG. 3, the biased fluid (7) is designed to be able to rotate lightly, and the pivot (7a) of the biased fluid (7) is supported by a bearing (8a) supported by supporting rods (8) and (8). It is pivoted. 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.

In this way, the deflected fluid (7) is deflected while rotating by the airflow from the front, so that the loss of wind energy is smaller than that in FIG.

[0035]

[Effect of the invention]

 According to the present invention, even if the outer diameter of the wind guide cylinder is the same as the diameter of the impeller of the conventional open type propeller type wind power generator, the impeller can be formed much more efficiently than the conventional one. It can be rotated at high speed, effectively collecting wind power and generating electricity with high efficiency.

[Brief description of the drawings]

FIG. 1 is a longitudinal 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.

FIG. 3 is a view similar to FIG. 1, showing a third embodiment.

[Explanation of symbols]

 (1) Support shaft (2) Substrate (3) Thrust bearing (4) Wind guide tube (5) Support piece (6) Blade (7) Uneven fluid (7a) Pivot shaft (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 (7)

[Utility model registration claims] 1. A biased fluid having a plurality of blades, which is twisted in a fixed direction and whose outer peripheral edge is close to the inner surface of the air guide tube, is provided at a front end portion on the axis of the cylindrical air guide tube, and A wind power generator, wherein a wheel for driving a generator is disposed at a rear end portion on an axis of a wind guide cylinder. 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. The wind power generator according to claim 1, wherein the biased fluid is fixed on an axis of the air guide tube. 5. The wind power generator according to claim 1, wherein the biased fluid is rotatable around an axis of the air guide tube. 6. The wind power generator according to claim 1, wherein the wind guide tube, the biased fluid, and the impeller are mounted on a substrate that can rotate around a vertical axis. 7. The wind power generator according to claim 6, wherein the generator and the transmission line by the generator are also mounted on the substrate.