JP2000291528A - Inclined shaft type wind power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply low-cost electric power by use of natural energy to contribute to natural environment conservation measures, such as a prevention of global warming, by electrically combining a solar generator with a small-size wind power generator installed by use of a space of a spot suitable for wind environment, such as a roof or a top part of a building (house, building, micro tower or the like) so as to compositely generate power. SOLUTION: In this wind power generator, a drive rotation shaft 1 of a windmill prime mover mechanism 30, wherein a rotor 2 having cross-shaped vanes 3 and a power generator 4 are directly connected is inclined by 45 degrees, while a vertical shaft 10 provided to a stand 11 of a mounting mechanism 40 and fixing bands 7 of the power generator 4 are turnably joined and supported by a joint 8 and a coupling 9. The wind power generator has both the characteristics of dynamic lift and drag occurring in the vanes 3 of the rotor 2. By providing the wind power generator on the stand 11 mounted on a building 22 and electrically combining a solar generator with the wind power generator to complement the wind power generator, a distributed or independently completed hybrid power generating system is constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized wind power generator installed on the roof of a building or the like, and relates to a combined power generation system that electrically connects the wind power generator and a solar power generator to generate power using natural energy. Things.

[0002]

2. Description of the Related Art Conventional wind power generators are mainly classified into a windmill motor having a rotation axis in the wind direction (horizontal axis windmill) and a windmill motor having a rotation axis perpendicular to the wind direction (vertical axis windmill). Separately, Dutch wind turbines and propeller-type wind turbines are known as horizontal axis types, and battle, Darius and Savonius wind turbines are known as vertical axis types. However, wind turbine motors (wind power generators) with a structure in which the rotation axis is inclined, It has not been disclosed or put to practical use yet.

[0003]

The propeller type wind turbine device, which is the mainstream of the conventional horizontal axis type wind turbine, can obtain high rotation efficiency by the lift of the blade, but when the wind speed becomes 25 m or more (typhoon), the blade speed becomes high. It is necessary to stop rotation because the plate is damaged, and to prevent deceleration or reverse rotation due to wind direction change. There were problems with structural complexity and toughness.

On the other hand, a vertical axis type wind turbine device can obtain deflection characteristics due to wind drag of a cup, but has a low rotation efficiency.
In addition to the use of transmission gears for high-speed rotation, there were problems with the enlargement of structures due to the increase in the area of the cup.

[0005] The present invention is to improve the simplification of the wind power generator by reviewing and improving various mechanisms such as the wind receiving function, rotation function, deflection function and the like of the wind turbine motor which are the above problems.
It aims to improve energy conversion efficiency as well as weight reduction.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, in the wind turbine generator of the present invention, a high rotation characteristic by lift, which is an advantage of a horizontal axis wind turbine, and a drag, which is an advantage of a vertical axis wind turbine, are obtained. The following configuration was adopted in order to provide a device having both deflection characteristics and a device that can be easily installed on a building.

[0007] By imparting a taper to the front edge of the blade of the propeller type wind turbine, high-speed rotation performance of the rotor is maintained by lift.

Also, a camber (warp) is provided on the trailing edge of the blade.
In order to maintain the deflecting performance (horizontal rotation) of the rotor due to the drag, it is possible to maintain the deflection performance.

Further, the drive efficiency of the rotor is improved by directly connecting the drive drive shaft of the rotor and the drive drive shaft of the generator.

Further, by inclining the directly connected drive rotary shaft by 45 degrees, the high-speed rotation performance is maintained by the lift of the horizontal shaft type windmill, and the transmission gear device is not required.

A camber (warp) is provided on the trailing edge of the blade.
By attaching the, the deflection performance (horizontal rotation) due to the drag of the vertical axis wind turbine is maintained, and the wind direction follow-up device (tail, etc.) is not required.

Then, the windmill motor mechanism having the inclined drive shaft and the vertical shaft of the holding mechanism are joined and supported by a joint (I-type), and the vertical shaft easily follows the deflection displacement (horizontal rotation) of the rotor. The rotation mechanism eliminates the need for an azimuth control device (such as a tracking wing).

As a measure for preventing rotor damage due to high-speed rotation in strong winds, a wind turbine motor mechanism and a holding mechanism are joined and supported by a type II joint, and a mechanism is used in which the rotor is deflected upward and displaced by wind drag. This eliminates the need for a rotation control device.

Further, a small-scale (30) which is electrically coupled to a photovoltaic power generator installed on a building to complement the photovoltaic power generator is provided.
In order to obtain a combined power generation device of 0 W to 2 KW), a gantry is installed at a location adjacent to the photovoltaic power generation device, and a windmill motor mechanism is mounted on this.

[0015]

[Action]

By inclining the inclination angle θ of the drive rotation shaft by 45 degrees, the rotation speed of the rotor is ensured to be about 80% of the rotation speed of the horizontal axis wind turbine, so that an appropriate rotation force can be obtained.

Also, the angle of attack α of the taper at the leading edge of the blade
Is 29 degrees at the root of the blade, 35 degrees at the middle, and 41 degrees at the tip of the blade, so that the same lift effect as a propeller wind turbine can be obtained.

A camber (warp) is provided on the trailing edge of the blade.
, The same wind drag as the cup of the vertical axis wind turbine is obtained, and the deflection (horizontal rotation) effect of the rotor is obtained.

Further, the wind turbine motor mechanism and the vertical shaft of the holding device (attached to the gantry) are connected and supported by a joint,
The rotation (deflection) of the windmill motor mechanism was facilitated.

The I-type joint is applied to a normal wind condition area, and the II-type joint is applied to a strong wind area where a typhoon or the like passes, and the rotor is deflected by wind drag. Use bolts and nuts, disc spring washers, etc. to tighten the fittings.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. As shown in FIG. 1, a driving rotary shaft 1 of a rotor 2 having four blades 3 and a small generator 4 (DC 12V, 300 to 6) are provided.
The inclination axis 1 of the windmill motor mechanism 30 in which the drive rotary shaft 1 of 00 W or 24 VDC, 800 W to 2 KW) is directly connected by the coupling 9 is inclined by 45 degrees.

In order to hold the windmill motor mechanism 30 in an inclined state, two fixing bands 7 are attached to the main body of the generator 4, and the fixing band 7 and the vertical shaft 10 are connected to the joint 8 (I type), the coupling 9 and the bolt (2). It is joined and supported using a book).

In a region where a strong wind is generated, as shown in FIG. 2, one fixing band 7 is attached to the main body of the generator 4, and this is connected to a vertical shaft 10 by a joint 8 (II type), a coupling 9 and a bolt. (1) In addition to using a disc spring washer, it is pivoted.

The mounting of the vertical shaft 10 on the gantry 11
The bearing 12 was used to improve the turning performance of the windmill motor mechanism 30 as well as the rotation performance of the vertical shaft 10.

FIG. 3 shows a blade 3 of the inclined rotor 2 of the present invention.
The material is aluminum, FRP
(Fiberglass material) and other plastics,
One plate is cut out or extruded. (A) is a top view of the rotor 2 in which the blade 3 is formed in a cross shape,
Reference numeral 9 denotes a lift surface having a taper 16, and a trailing edge portion 20 forms a drag surface having a camber 15. (B) is a side view of the rotor 2, and shows the blade tip 1 of the blade 3 from the hub 13 at the center.
8 has a shape protruding forward. (C) is the rotor 2
Shows the cross-sectional shape of each blade element 6 with respect to the center line viewed from the drive rotation shaft 1 of FIG. 1. The angle of attack α of the taper 16 of the leading edge 19 is 29 degrees at the blade root 17 and 35 degrees at the middle. The tip of the wing tip 18 is 41 degrees and becomes larger at the tip, whereas the angle of the camber (warp) 15 of the trailing edge 20 is uniform and 45 degrees.
Degree.

In order to install a wind power generator on a building,
A gantry 11 is constructed on a building, and a vertical shaft 10
Is mounted using the bearing 12 and the wind turbine motor mechanism 30 is supported using the joint 8.

The cords 5 (two) from the generator 4 are inserted into the lead wire holes 14 formed in the coupling 9, pulled out from the lower part through the rotary shaft 10, and wired.

Since the present invention is configured as described above, the following effects can be obtained. Since a rotation control device and a direction control device required for a horizontal axis type wind turbine (propeller type) are not required, the mechanism is simplified and the weight is reduced, and manufacture and assembly are facilitated.

Further, since a transmission (differential mechanism) required for a vertical axis type wind turbine (Savonius type or the like) is not required, the mechanism is simple, and the assembly is easy and inexpensive.

Further, by constructing a gantry so that it can be easily installed on an existing building and attaching it to the gantry, the construction cost of the small-scale wind power generator can be reduced.

As a supplementary device to the photovoltaic power generation device, as a small-scale combined power generation device using clean energy, a distributed or complete power generation system is provided to private small and medium-sized enterprises and general homes. The use and dissemination contribute to the promotion of environmental conservation measures projects.

[Brief description of the drawings]

FIG. 1 is a side view and a partial cross-sectional view of an inclined axis wind power generator (I-type joint).

FIG. 2 is a side view of a tilt axis wind power generator (II type joint).

FIG. 3 is a plan view of a rotor. (B) Side view of the rotor. (C) A blade element cross-sectional view of a blade (blade plate).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilt axis (drive rotation axis) 2 Rotor 3 Blade (blade plate) 4 Generator (AC or DC) 5 Code 6 Blade element (blade cross section type) 7 Fixed band 8 Joint (I type, II type) 9 Cup Ring 10 Vertical shaft (rotating shaft) 11 Mount 12 Bearing (with flange) 13 Hub 14 Lead wire hole 15 Camber (warp) 16 Taper (inclined surface) 17 Blade root 18 Blade end 19 Front edge 20 Rear edge 30 Windmill Motor mechanism (rotor and generator) 40 Holding mechanism (vertical shaft and gantry) θ Tilt angle (drive rotation axis) α Attack angle (twist angle)

[Procedure amendment]

[Submission date] July 5, 1999 (1999.7.5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

Claims (2)

[Claims] A rotor is directly connected to a generator.
Is supported on the windward side of the vertical shaft 10 and turns. (A) The rotor 3 of the rotor 2 is composed of four blades. (B) The taper 16 is formed at the front edge 19 of each blade. A camber 15 is provided on the trailing edge portion 20. (c) The wind turbine motor mechanism 30 in which the rotor 2 and the drive rotating shaft 1 of the generator 4 are directly connected is inclined by 45 degrees. (D) The bearing for supporting the inclined wind turbine motor mechanism 30 The vertical shaft 10 of the mechanism 40 is spliced with a fitting 8 metal fitting. (E) The vertical shaft 10 is supported and mounted on the gantry 11 of the holding mechanism 40 using the bearings 12 (f) The windmill motor mechanism with the gradual increase in wind speed 30. An inclined rotary shaft type wind power generator, comprising a joint mechanism in which 30 is displaced upward. 2. A small wind power generator installed on a building (a house, a building, a tower, etc.) as a complementary device of the solar power generator, which is electrically coupled to the solar power generator to perform combined power generation. The wind power generator according to claim 1.