JP2004353637A - Self-rotating blade/vertical shaft type wind mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind mill, heightening the wind receiving efficiency of a canvas blade, taking measures for safety against a strong wind, and facilitating transmission maintenance for a wind direction blade shaft and the self-rotating canvas blade shaft. <P>SOLUTION: The canvas blade is shaped linear, the lateral length : the longitudinal length is 1:3, the lateral length is provided with sag 1.2 times as long as the length of the canvas blade frame, and wind force utilizing lift and resistance is obtained to form a sail having high wind receiving efficiency. The rotational frequency in the case of a strong wind is measured, and the rotational frequency of a rotor can be adjusted by brake control provided on a power generator. A planetary gear having an idle gear between the wind direction blade shaft and the canvas blade shaft is provided in the lower part of the rotor and stored in a gear case, a timing belt is stretched between the planetary gear shaft and the canvas blade shaft, oil feeding to the gear is facilitated, the tension of the timing belt is adjusted, and the belt is easily replaced. Further, the rotating angle of the canvas blade is electronically controlled to a change in wind speed due to the rotation of the rotor to obtain a wind receiving angle at higher efficiency. Further, in the case of a destructive strong wind, the rotating angle of the canvas blade is made parallel to the wind direction to take measures for safety. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0101]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission device for rotating a sail frame shaft of a rotating blade type vertical axis wind turbine as a small power generating device, and a structure of a receiving blade and safety measures against strong wind.
[0092]
[Prior art]
Conventionally, this type of power generation is mainly of a propeller type as a horizontal axis type and a Darrieus type wind turbine as a vertical axis type, but both of them are of a lift type, and their performance cannot be exhibited unless the wind speed is 10 m / s or more. Next, there are Saponius type windmills, paddle windmills, and rotating blade type windmills that can generate electricity even in a weak wind. These windmills are drag-type windmills and work well when the peripheral speed ratio (rotor peripheral speed / wind speed) is small. However, as the size increases, the operating performance decreases. In other words, the ability is demonstrated when the wind is weak, and cannot be used when the wind is strong.
Further, the transmission between the wind direction blade axis and the rotating shaft of the rotating blade is described in, for example, JP-A-57-372, JP-A-57-56674, and JP-A-11-117850. Directly connecting pulleys of both shafts with a timing belt, or gear transmission in which another gear is sandwiched between gears of both shafts, or bevel gear transmission with bevel gears attached to both shafts is known, but in consideration of realistic maintenance Absent.
Conventional spinning blade type wind turbines do not have any practical safety measures against destructive strong winds.
[0093]
[Problems to be solved by the invention]
The conventional rotating blade type wind turbine operates well when the peripheral speed ratio (rotor peripheral speed / wind speed) is small, but has a weak point that the operating performance decreases as the peripheral speed ratio increases. In other words, it has the weakness that it exerts its ability in low winds and cannot use its ability in strong winds.
As shown in FIG. 3, in the known example, the conventional rotating blade type wind turbine is a drag type wind turbine. In the range of 195 ° to 345 °, not only cannot generate wind rotation but also acts as a reverse rotation force. Furthermore, when the peripheral speed of the windmill is close to the wind speed, no rotational force can be generated near a position where the windmill is vertically received. In view of this, the conventional rotating blade type wind turbine has become a totally inefficient wind turbine. Wind turbines with a known sail shape are also of the drag type and are basically inefficient.
In addition, a pulley for both shafts is provided for the transmission of the wind wing shaft and the rotating canvas wing shaft, and in the timing belt transmission, since the transmission shafts are separated from each other in terms of structure, the timing belt extends, causing misalignment of timing and timing. In the case where the belt is disengaged, and the transmission of the gears with the separate gears interposed between the gears of the two shafts or the transmission of the bevel gear between the two shafts, there are problems of noise, refueling, and maintenance.
Further, there remains a problem of solving safety measures against a destructive strong wind. The present invention has been made to solve these problems.
[0093]
[Means for Solving the Problems]
In each of the plurality of canvas wing frames (5), the canvas (6) is formed into a vertically long shape, and the horizontal length: the vertical length = 1: 3 or more, and the horizontal length is 1.2 times the length of the canvas wing frame (5). Provide the above sag. This allows the sails to expand laterally in the wind and act as wings. As a result, it is possible to obtain wind power utilizing lift + drag, and to form a sail with high wind receiving efficiency unprecedented.
[0056]
A wind vane shaft (2) is provided at the center of the support (3) to achieve the purpose of noise, refueling, maintenance, etc., and a plurality of rotors revolving around the rotor (4) revolving around the wind vane shaft (2). Gears (8) are attached to the lower part of the wind wing shaft (2), and the number of the idle gears (9) is equal to the number of the canvas wing frames (5) around the gear (8). A planetary gear (10) is provided. These gears are housed in a gear box (14), and pulleys (12) and (13) are attached below the planetary gear shaft (10) and the canvas wing frame shaft (7). Attach the belt (15), rotate the gear box (14) about the wind vane shaft (2) to determine the position, apply tension to the timing belt (15), and move the gear box (11) to the rotor (4). ), The rotation ratio of the wind wing axis (2) to the canvas wing frame axis (7) is a well-known 2: 1 transmission. That.
[0086]
A rotation sensor (17) is attached to the lower end of the rotor shaft (16), and a generator (18) with a brake device is provided.
007
A drive motor (19) for rotation is mounted below the plurality of canvas wing frame shafts (7), and the angle is optimized by electronic control to obtain a more efficient wind receiving angle. In the case of destructive strong wind, safety measures shall be taken by making the rotation angle of the canvas wing frame (5) parallel to the wind direction.
[0098]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
The canvas (6) is formed in a vertically long shape, and the horizontal length: the vertical length = 1: 3 or more, and the horizontal length is provided with a slack of 1.2 times or more the length of the canvas wing frame (5). This allows the sails to expand laterally in the wind and act as wings.
In FIG. 4, at positions P1, P2, P4, and P5, lift is generated together with the drag, and the lift adds the rotational force. In P6 and P8, the drag acts as a minus, but the lift overcomes this and generates rotational force. The rotation force cannot be generated in a narrow range of 240 ° to 300 °. As a result, a wind force utilizing lift + drag was obtained, and as a result of the experiments so far, it was confirmed that the peripheral speed was rotated at 1.8 times the wind speed. In conclusion, this method has made it possible to form a sail with high wind receiving efficiency that has never been seen before.
[0099]
A wind wing shaft (2) to which the wind wing (1) is attached is provided at the center of the support base (3), and a plurality of rotating canvas wing frames (5) are rotated in a rotor (4) revolving around the wind wing shaft (2). ), And a canvas wing frame shaft (7) is provided to rotate in the rotor (4).
[0102]
A gear (8) is attached to the lower part of the wind direction wing shaft (2), and a planetary gear (10) is provided around the gear (8) and sandwiches the number of idle gears (9) equal to the number of canvas wing frames (5). Gears (14), pulleys (12) and (13) are mounted below the planetary gear shaft (10) and the canvas frame shaft (7), and a timing belt (15) is mounted. 14) is rotated about the wind vane shaft (2) to determine the position, the tension is applied to the timing belt (15), and the gear box (11) is attached to the lower part of the rotor (4). The transmission ratio between 2) and the canvas frame shaft (7) was transmitted at a known ratio of 2: 1.
[0111]
A rotation sensor (17) was attached to the lower end of the rotor shaft (16), a generator (18) with a brake device was provided, and the structure was such that the rotor speed could be adjusted.
[0122]
A drive motor (19) for rotation is attached to the lower portion of the plurality of canvas wing frame shafts (7), and the angle is adjusted electronically to adjust the wind receiving angle. In addition, safety measures were taken by making the rotation angle of the canvas wing frame (5) parallel to the wind direction in the case of destructive strong winds.
[0113]
The rotation of the generator pinion (21) was increased by the rotation transmitting gear (20) provided below the rotor (4), and the generator with brake (18) was rotated to generate power.
[0141]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0152]
The canvas (6) is formed in a vertically long shape, and the horizontal length: the vertical length = 1: 3 or more, and the horizontal length is provided with a slack of 1.2 times or more the length of the canvas wing frame (5). This allows the sails to expand laterally in the wind and act as wings. With the shape of the canvas (6), it was possible to form a sail having 3 to 4 times higher wind receiving efficiency than the conventional one.
[0162]
A rotation sensor (17) was attached to the lower end of the rotor shaft (16), a generator (18) with a brake device was provided, and the structure was such that the number of rotations of the rotor could be adjusted, and safety measures could be taken in strong winds.
[0173]
A gear (8) is attached to the lower part of the wind direction wing shaft (2), and a planetary gear (10) is provided around the gear (8) and sandwiches the number of idle gears (9) equal to the number of canvas wing frames (5). And the like were stored in a gear box (14) to facilitate lubrication. Also, pulleys (12) and (13) are mounted below the planetary gear shaft (10) and the canvas blade frame shaft (7), a timing belt (15) is mounted, and the gear box (14) is centered on the wind direction blade shaft (2). By adjusting the position of the timing belt (15) and mounting it, the tension after the timing belt (15) was extended and the replacement of the new timing belt (15) were easily achieved.
[0182]
A drive motor (19) for rotation is attached to the lower portion of the plurality of canvas wing frame shafts (7), and the angle is adjusted electronically to adjust the wind receiving angle. Also, safety measures could be taken by setting the rotation angle of the canvas wing frame (5) parallel to the wind direction in the case of destructive strong wind.
[Brief description of the drawings]
FIG. 1 shows a three-dimensional view of an embodiment (claim 1, claim 2, claim 3) of the present invention.
FIG. 2 shows a three-dimensional view of an embodiment (claims 2, 3 and 4) of the present invention.
FIG. 3 is a wind diagram of a conventional drag type wind turbine.
FIG. 4 is a wind diagram of a rotating blade type vertical axis wind turbine of this time.
[Explanation of symbols]
(1) Wind wing (2) Wind wing shaft (3) Support stand (4) Rotor (5) Canvas wing frame (6) Canvas (7) Canvas wing frame shaft (8) Gear (9) Idle gear (10) Planet Gear (11) Planetary gear shaft (12.13) Pulley (14) Gear box (15) Timing belt (16) Rotor shaft (17) Rotation sensor (18) Generator with brake (19) Drive motor for rotation (20) Gear for rotation transmission (21) Pinion for generator

Claims (4)

A revolving rotor (4) is attached to the center of the support table (3) and the wind direction axis (2). A plurality of canvas wing frames (5) are provided in the rotor (4), a canvas (6) is stretched in the canvas wing frame (5), and a gear is provided below the wind wing shaft (2) to which the wind wing (1) is attached. (8) is attached, and planetary gears (10) are provided around the idle gears (9) of the number of the canvas wing frames (5) around the gears (8), and these gears are put in a gear box (14). , Attached to the lower part of the rotor (4). A transmission device for a rotating blade type vertical shaft wind turbine in which pulleys (12, 13) are provided below the planetary gear shaft (11) and the canvas blade frame shaft (7), and a timing belt (15) is attached to the pulleys (12, 13). . In each of the plurality of canvas wing frames (5), the canvas (6) is formed into a vertically long shape, and the horizontal length is set to at least 1: 3, and the horizontal length is at least 1.2 times the length of the canvas wing frame (5). The structure of the rotating blade type vertical axis windmill, which has slack and is fixed to the left and right edges of each canvas wing frame (5), and the upper and lower edges are free. 3. A strong wind safety device for a rotating blade type vertical shaft type wind turbine according to claim 2, wherein a rotation sensor (17) is attached to a lower end of the rotor shaft (16) and a generator (18) with a brake device is provided. In contrast to the transmission according to claim 1, an electronically controlled transmission in which a drive motor (19) for rotation is attached to the lower part of each of the plurality of canvas frame shafts (7). .11.12.13.14.15) with a simple structure. The structure of the canvas of the rotating blade type vertical axis wind turbine according to claim 2, and the strong wind safety measures device according to claim 3.

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