JP2018178984A - Drag type openable power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an openable drag type power generator having high strength, and capable of generating power stably even under strong wind.SOLUTION: On a cylindrical structure (5), an annular rail (7) is provided, and on the cylindrical structure, two rotational shaft receivers (3) are provided so as to be movable along the rail. The two rotational shaft receivers (3) are arranged so as to face each other with a center point of the annular rail (7) held therebetween. To the rotational shaft receivers, a rotational shaft (2) is attached, and on the rotational shaft (2), four impeller frames (4) are provided at every 90 degrees. The adjacent impeller frames (4) are connected by an impeller connection cable (6), and the impeller frames (4) are also connected to the rotational shaft (2) by a rotational shaft connection cable (8). In the impeller frame (4), an openable curtain (1) is provided. When an impeller goes above a horizontal plane, the openable curtain (1) is opened to close a space in the impeller frame (4).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drag type wind power generator.

  The conventional drag type generator changes resistance by the shape of the back and front of the blade, and the rotation efficiency is not high, and it is common to the propeller type generator. Because it is a supporting structure, it was weak in strength, and it could not be rotated by a strong wind such as a typhoon as it became larger. In addition, there is already an idea of opening and closing a blade to solve it, but it has not been put to practical use.

Japanese Patent Application Laid-Open No. 53-71739 JP 2000-320445 A U.S. Patent No. 8899927 International Publication No. 2013/000127 Japanese Application Sho 61-105559 JP, 2016-205361, A

  The conventional drag type generator has problems to be solved such as low practicability in terms of efficiency and problems with strength.

  In order to achieve the above object, in the resistance-type on-off generator according to the present invention, a blade having a function capable of opening and closing a space in a blade frame is provided on a rotary shaft, and the blades are connected by a cable. It is connected. Further, rotary bearings capable of moving on the annular rail are provided at both ends of the rotary shaft, and the rotary bearings are provided on the annular rail, and the annular rail is provided on the cylindrical structure. .

  According to a second aspect of the present invention, in the first aspect, the outer periphery of the cylindrical structure is inclined downward from the center side to the outer side from the center side.

  The present invention is configured as described above, and has the effects as described below. When the mechanism according to claim 1 is used, the rotary shaft is freely changed in direction on the annular rail in accordance with the wind direction by the rotary bearing movable on the annular rail provided on the cylindrical structure. Can do. In addition, the blade provided with the function of opening and closing the space in the blade frame provided on the rotating shaft closes the space in the blade frame on the upper side of the rotating shaft, and the space in the blade frame when no drag can be obtained from the wind. The rotation axis is rotated by the difference in drag between the upper and lower sides of the blade. Also, by connecting the blade frames with a cable, the strength of the blades is increased.

  Further, by installing the rotary shaft on the cylinder, the blades provided on the rotary shaft are prevented from receiving the drag of the wind by entering into the cylinder at the time of return rotation. The disadvantage of a drag generator is that it is less efficient than a propeller generator. While a propeller generator can obtain rotational power by lift for all blades, a drag-type generator basically contributes only one rotational power. Moreover, on the return side blades, the drag of the rotational speed added to the wind speed acts as a counter-rotational force. Although it can be said that it is an open / close type drag generator, the resistance of the return rotation blade is a serious problem. Assuming that the ratio of the area by opening and closing is 10: 1 and it rotates at the same speed as the wind, the relative speed of the blade frame on the return rotation side to the wind is doubled. Since the energy is cubed to the wind speed, the ratio of energy applied to the blades is 10: 8, and most of the torque is lost. So, in this invention, when the blade | wing provided in the rotating shaft enters a pipe | tube at the time of return rotation, it was made not to receive the resistance of a wind, and it was made to prevent the fall of rotational force. Further, by providing the rotation shaft on the cylinder, the structure becomes stable at the center of gravity, and it is difficult to collapse. In addition, since the tubular structure can support the weight of the blades and the generator, and the wind can be prevented, it is sufficient to construct the reinforcing bar and cover the outside with the sheet.

  In the case where the mechanism according to claim 2 is used, in addition to the case where the mechanism according to claim 1 is used, the outer periphery of the cylindrical structure is a polygon which is inclined from the center side to the outer side. If the outside of the tubular structure is vertical, the wind striking that portion will only flow downwind along the sides. However, if the shape is inclined downward by a depression angle, the wind rises on the slope and hits the blades, so the wind pressure can be increased. In addition, the reason for the polygon is that the wind flows along the surface, and in the case of a curve such as a circle, it flows downwind along the side surface.

It is a perspective view which shows the form for implementing invention. It is a top view which shows the form for implementing invention. FIG. 2 is a top view showing Example 1; FIG. 7 is a cross-sectional view showing Example 2;

  A mode for carrying out the present invention will be described based on FIG. 1 and FIG. An annular rail (7) is provided on the cylindrical structure (5), and two rotational bearings (3) movable along the rail are provided thereon. The two rotary bearings (3) are disposed to face each other across the center point of the annular rail (7), and the rotary shaft (2) is attached thereto. Four blade frames (4) are provided at every 90 degrees on the rotation shaft (2), and they are connected by adjacent blade frames (4) and blade connecting cables (6). The blade frame (4) is also connected to the rotating shaft (2) by the rotating shaft connecting cable (8). The blade frame (4) is provided with an opening and closing curtain (1), and when the blade is above the horizontal plane, the opening and closing curtain (1) is opened to close the space in the blade frame (4). As a result, the wind strikes the blades on the upper side of the rotation shaft (2), and the blades on the lower side of the rotation shaft (2) close the opening and closing screen (1) to greatly reduce the area and rotate due to the difference in drag of the upper and lower blades. Since the blade frame (4) of the portion located below the annular rail (7) enters the cylindrical structure (5) and is not exposed to the wind, the resistance at the time of return rotation can be reduced. The curtain (1) may be inflated like a sail of a sailing boat to increase drag. Further, it is preferable to install a generator on one side of the rotary bearing (3) and to place a drive for moving the annular rail (7) on the other side. FIG. 1 is a perspective view, and FIG. 2 is a top view.

  Example 1 will be described based on FIG. The outside of the tubular structure (5) is sloped with a curtain (9) so that the shape seen from above is hexagonal.

  A second embodiment will be described based on FIG. FIG. 4 is a cross-sectional view of the inclined portion of FIG. With a steel frame (11), a tubular structure is constructed, and an annular rail (7) is provided at the top. Tilt the curtain (9) by stretching it toward the ground at a distance from the outer periphery of the annular rail (7). As a result, the wind under the structure travels along the slope and strikes the blades, thereby increasing the rotational force of the blades.

DESCRIPTION OF SYMBOLS 1 opening and closing curtain 2 rotation shaft 3 rotation bearing 4 blade frame 5 cylindrical structure 6 blade connection cable 7 annular rail 8 rotation shaft connection cable 9 curtain 10 ground 11 steel frame

Claims (2)

  The rotary shaft is provided with a blade having a function capable of opening and closing the space in the blade frame, the blades are connected by a cable, and a rotary bearing movable on the annular rail is provided at both ends of the rotary shaft. A resistance-type on-off generator with an annular rail mounted on a tubular structure.   2. The drag-type on-off generator according to claim 1, wherein the outer periphery of the tubular structure is inclined downward from the center side to the outer side from the center side.

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