JPS6287673A - Wind mill - Google Patents

Abstract

PURPOSE:To smoothly rotate a wind mill so as to improve the absolute value of a lift generated in outer blades in a wide speed range of air, by forcedly generating an air stream facing to the outer blades of the wind mill and accelerating the outer blades by said air stream. CONSTITUTION:Plural ouater blades 4, extending in the same direction with a rotary shaft 1, are provided around the vertical rotary shaft 1, and lengthwise direction both end sides of these outer blades 4 are mounted to the rotary shaft 1 by horizontal blades 6 extending in the radial direction. Externally mounted baffles 5A, 5A are opposed in the outside of said horizontal blades 6, and an air stream is supplied to said externally mounted baffles 5A through ducts 7 from a feed air source 7A of exhaust by a warehouse, building, etc. or of a separately provided air collector and the like. And each air stream, being delivered to the horizontal blades 6 from the externally mounted baffles 5A, 5A, further acts on the outer blades 4 to accelerate a wind mill.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an NL vehicle that can efficiently convert wind energy into rotational energy.

[Prior Art] As a type of wind turbine, a vertical shaft type wind turbine is known in which the shaft center is arranged to intersect (perpendicularly intersect) with the direction of wind travel. (
(For example, published by Ohmsha, Wind Energy Reader, p. 37) There are various types of vertical wind turbines such as paddle type, saponius type, Darius type, and gyro mill type. , it is not possible to obtain high-speed rotational force,
Not suitable for high-efficiency wind turbines. Darius type or gyro mill type wind weight j dimension, belt-shaped or rectangular plate-shaped five are used, and both ends of each award in the N4' direction are fixed to the rotating shaft,
It can achieve high speed rotation and is highly efficient compared to the 1/type and Saponius type wind turbines.

[Problem to be solved by the invention] Darius type and gyro mill type vertical axis wind turbines.

The principle is to obtain rotational force from the rotational component of the lift force generated when the wind hits the blade, but there is a phenomenon in which this lift force fluctuates depending on the rotational phase of the wing, so the rotation is not necessarily smooth. The problem arises that this is not the case. Also, if the wind speed is low, it is difficult to extract rotational power.

[Means for Solving the Problems] The wind turbine of the present invention includes an outer blade accelerating means for forcibly generating an air flow toward the outer blades and accelerating the outer blades by this air flow. There is. This outer wing is arranged axially symmetrically with both ends of the outer wing fixed to the rotating shaft, respectively.
For example, the wing configuration is the aforementioned Darius type or gyro mill type. As external acceleration means, there are two methods: one is to force the air into the wind turbine along the rotation axis to flow out in the radial direction, and the other is to force the negative pressure into the wind turbine along the rotation axis to flow inside the outer blades. In some cases, air outside the outer wing is caused to flow in a counter-radial direction by acting in the opposite direction.

[Effect]

As mentioned above, the vertical axis 5 of Darius type and gyro mill type
A wind turbine obtains rotational force from the rotational component of the lift force generated on the blades, but in the wind turbine of the present invention, an airflow toward the outside air is forcibly formed by the outer blade accelerating means (inward the outer blades). If the air is guided to the air, the air will flow out in the radial direction, and if negative pressure is guided inward to the outside air, the outside air around the outer wing will flow in the counter-radial direction), and this forced air flow This makes it possible to improve the absolute value of lift generated on the outer wing.

[Example] Examples will now be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of a wind turbine according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. Note that FIG. 1 shows a cross section taken along line II in FIG. 2.

Reference numeral 1 designates a rotating shaft, which is pivoted by a bearing 2.3. An outer wing 4 is provided around the rotation axis l and extends in the same direction as the rotation axis. Each is attached to the rotating shaft 1 by a disc-shaped interior puffer 5. As shown in FIG. 2, this outer wing 4 has a complete cross-sectional shape, and in this embodiment, four pieces are provided. Figure 3 shows horizontal wing 6
As can be seen from this figure, the horizontal blades 6 also have a cylindrical cross-sectional shape like the outer χ4, and four blades are attached.

Reference numeral 7 denotes an air supply duct for introducing air along the rotation axis l, and the exhaust air is discharged from an exhaust air duct of a factory, warehouse, building, etc., or from a separately installed air collection device. Air such as wind is guided by an air supply source 7A.The reference numeral 5A is arranged close to the seven water wings 6,
It is an exterior puffer in which the opening of the air supply duct 7 is supported, and the axial side of the rotating body consisting of the rotating shaft l, the outer blades 4, and the horizontal blades 6 is closed, and the air is not supplied from the air supply duct 7. It is designed to be efficiently guided along the rotation axis 1. The opening of the duct 7 may have any structure as long as it has a concentric cylindrical shape or a plurality of branch ducts arranged in one shape. In Fig. 1, the upper and lower horizontal blades 6 are installed so that their angles of attack are opposite to each other, and air is introduced from the air duct 7 along the rotation axis l, and also in the normal rotation direction of the rotation axis l. horizontal wing 6
It is designed to generate lift force. Further, the air introduced along the rotation axis 1 is directed in a radial direction by the internal baffle 5, and this air hits the outer blade 4 and acts to increase the speed of the outer blade. That is, the internal baffle 5 functions as a guide portion that directs the air introduced along the rotating shaft 1 to the outside air.

Reference numeral 8 is a generator connected to the rotating shaft 1, but a pump, compressor, turbine, etc. may be connected instead of the generator.

In the above embodiment, the interior bar 2 full 5 is fixed to the rotating shaft 1 and configured to rotate integrally with the rotating shaft 1. 711 = Fi ir + l'i
The energy consumed in turning can be effectively utilized. Furthermore, in the embodiment described above, the internal baffle 5 has a function of changing the direction of the air supply, but since the air introduced from both directions buffers each other and directs the direction in the radial direction. Even if the interior puffful 5 is not provided, the air is naturally oriented in the radial direction and a certain degree of outer blade acceleration effect can be obtained. It is also possible to make the angle of attack of the horizontal blade 6 different in the blade span direction so that the air passing through the horizontal blade 6 is sent in the radial direction.

FIG. 4 is a longitudinal sectional view showing the configuration of a wind turbine according to another embodiment of the present invention. In the embodiment shown in Fig. 4, the outer i14 having a troboskinin (jumping rope) shape is used, and even if centrifugal force is applied to the outer wing during one rotation, only tensile stress acts on the outer wing, and bending deformation is caused by the outer wing. The structure is such that it does not occur on the wing 14.

In addition, the region 14A near the rotation axis, which is in a nearly horizontal state at both the upper and lower ends of the outer wing, is twisted in the middle and warped upward, and the air supplied from the air supply duct 7 generates a lift force in the normal rotation direction of the outer wing. It looks like this. Note that the region 14A near the rotation axis of the outer wing is configured with a wing member separate from the outer i14, and the angle of attack is set to the third
You can also set it up as shown in the figure and connect it in the middle.
The rest of the structure is the same as that in FIG. 3, so the same members are given the same reference numerals and their explanations will be omitted.

Furthermore, as shown by the two-dot chain line in FIG. 2, the outer wing 4 may have an elevation angle that is oblique to the radial direction. This elevation angle is a fairly large angle (for example, α is 60 to 806
).

Next, with reference to FIG. 5, the operation of the wind/torque according to the embodiment described in 2F will be explained.

FIG. 5 is a schematic cross-sectional view showing the planar configuration of the wind turbine according to the above embodiment when the wind turbine is installed so that the axis of rotation is in the vertical direction. In Fig. 5, Wl is the wind blowing in a direction parallel to the ground. When this wind W+ hits the outer blade 4, the rotating shaft 1 rotates. In addition to the wind WI, air is introduced from the air duct 7 along the axis of the wind turbine. This wind is dispersed in the radial direction by the internal bar +/full 5A or by the water I, and becomes wind W2. At the outer blade 4, the wind WI and the wind W2 blown in the radial direction merge to form a combined wind W3. Also, since the relative wind W4 is acting on the blade 4 due to its rotation,! The working wind W5 acting on the wind 4 is the vector sum of the combined wind W3 and the relative wind W4,
Lift force F is generated by this working wind W5. Further, the air supplied from the air supply duct 7 causes the horizontal plane 6 to generate a lift force ΔF. Therefore, in this embodiment, since the wind W2 in the radial direction exists, the working wind W5 becomes larger than in the conventional example in which such wind W2 does not occur, and therefore, the generated lift force F
is also larger than that of the conventional example. Furthermore, since the lift force ΔF due to the horizontal structure 6 is added, the total lift force acting in the direction of rotating the rotary shaft 1 is also larger than in the conventional example, compared to the conventional example in which such lift force ΔF does not occur.

In addition, by making the angle of attack of the outer wing 4 non-perpendicular to the radial direction (for example, as shown by the two-dot chain line in FIG. 2), the direction of the lift force F is improved, and the effective The amount of work can be improved.

The distribution of lift generated in the outer wing 4 in the rotational direction is equalized,
This also has the effect of smoothing the rotation of the outer blades.

Note that in the two embodiments (see FIGS. 1 and 4), the air supply ducts 7 are provided facing each other in the vertical direction, but the air supply ducts 7 are provided only in one of the downward directions.
The same effect can be obtained even if the other side is provided with an exterior baffle to block the flow between the inside of the wind east and the outside air.

FIG. 6 is a perspective view showing the configuration when the wind turbine of the present invention is applied to a large building. Reference numeral 20 indicates the main body of the high-rise building, and the left and right sides 20a.

Air ventilation plate 21 protrudes from both sides and upper door from 20b.
is provided, and a food member 22 surrounds the ventilation plate 21 on all four sides. An opening 23 is opened in a part of the ventilation board 21, and a partition board 25 is installed to guide wind toward a turbine room 24 installed at the center of the rooftop of the high-rise building body 20.

Note that there is a predetermined space 25 on the roof surface of the main body 20 of the high-rise building.
A ventilation section is defined by the roof section 26 and the roof section 26.

Further, on the other side surfaces 20c and 20d of the main body 20 of the high-rise building, a hood member 27 is disposed so as to extend between the left and right ventilation plates 21.
A duct part 28 is formed in the upper part of the roof part 26, the roof surface of the high-rise building main body 20, and the partition plate 25.

In a high-rise building with such a configuration, the wind that hits the building wall rises along the wall, flows into the turbine room 24 through the opening 23 or the duct part 28, and flows into the turbine room z4.
Rotational energy is outputted by the wind turbine of the present invention installed inside.

In addition, when such a wind turbine of the present invention is used, it is preferable to install a storm damping device, for example, in the duct part 28, in order to prevent damage to the wind turbine during stormy winds. A rising wing that rises when wind passing at a predetermined wind speed or higher may be installed in the wind passing section.

The power extracted by the wind turbine of the present invention may be directly connected to a generator, etc., or it may be transmitted to the intended use via an appropriate power transmission structure such as gears, chains, belts, etc., or an increasing/decelerating mechanism. be done. In addition to power generation, the power may be used for, for example, large outdoor stirring tanks, water pumping, heat generation equipment, etc.

In the above embodiment, air is introduced into the wind turbine by the air source 7A and is blown out in the radial direction, but instead of the air source 7A, an ejector of high pressure water such as a waterfall is used A negative pressure source that creates negative pressure is used to introduce negative pressure into the wind turbine, causing air around the outer blades 4 to flow in a counter-radial direction, and this incoming air acts on the outer blades 4 to create lift on the outer R4. You may also try to increase the.

[Effect of the invention] As is clear from the above description, according to the wind turbine of the present invention.

■ It is possible to perform efficient energy conversion over a wide range of wind speeds, from low to high wind speeds.

■ The windmill rotates smoothly and can rotate at high speed.

! Small: Wide degree of freedom in wing design.

■ The overall shape can be made smaller, and the output is larger with the same external dimensions.

It has the following effects.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing a wind turbine according to an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a horizontal cross-sectional view along the horizontal χ, and Fig. 4 is a separate view. FIG. 5 is a diagram illustrating the operation of the wind turbine according to the embodiment, and FIG. 6 is a perspective view illustrating the case where the wind turbine of the present invention is applied to a high-rise building. 1...Rotating shaft, 4...Outer wing, 5A, 5
B...Baffle, 6...Horizontal completion, 7...Air supply duct, 7A...Air supply source, 8...Start city machine.

Claims (3)

[Claims] (1) A plurality of outer blades arranged axially symmetrically with each longitudinal end fixed to a rotating shaft, and an outer blade that forcibly generates airflow toward the outer blade and accelerates the outer blade with this airflow. A windmill comprising a blade acceleration means. (2) The outer blade acceleration means includes an air supply unit that introduces air from an air supply source installed outside the wind turbine along the rotational axis of the wind turbine, and an air supply unit that directs the air introduced into the wind turbine toward the outer blades. 2. The wind turbine according to claim 1, further comprising a guide portion for causing the wind turbine to move. (3) The outer blade accelerating means includes a negative pressure introduction part that guides negative pressure along the rotation axis of the wind turbine from a negative pressure source installed outside the wind turbine, and a negative pressure introduced into the wind turbine in the direction of the outer blade. Claim 1 is characterized in that it is composed of a guide portion for directing
Windmill mentioned in section.