JP4809461B2 - Wind power generator - Google Patents

Description

  The present invention relates to a wind turbine generator, and more particularly to a small wind turbine generator that is installed and used on a rooftop of a building.

  As a wind receiving system for wind power generation, a reaction wind turbine type propeller type, a vertical axis straight blade type, a Darrieus type wind turbine, etc., and an impulse wind turbine type Savonius type wind turbine are known. However, each wind receiving method has its advantages and disadvantages when used. For example, the propeller type has high conversion efficiency to wind power at high wind speeds, and it can be expected to generate a large amount of power by making the rotor blades longer and the diameter of rotation larger, but at low wind speeds the conversion efficiency is extremely high. To drop. Further, in order to increase the rotation diameter, it is necessary to provide a high support and to increase the foundation. When the wind is strong, the peripheral speed increases rapidly and wind noise increases. The smaller the rotation diameter, the higher the rotation speed. Therefore, there is a problem that the propeller type is difficult to install near the place of residence because there is a risk of third party damage in the surroundings due to collapse of props in the strong wind, damage to the rotor blades and wind noise. is there. In addition, the vertical axis straight wing type and Darius type are not only less efficient in converting wind power to rotational force than the propeller type, but also because the rotating shaft also serves as a support, vibration generated during rotation is easy to transmit and only measures for strength In addition, there is a problem that measures against vibration are required, the apparatus becomes heavy, and it is not easy to install it on the top of a building. The Savonius type is not only less efficient in converting wind power into rotational force than the windmill mentioned above, but also has a problem that the wind receiving area per blade is large, so there is a high risk of collapse or breakage in strong winds.

  The current wind power generation is mainly large-scale propeller-type wind power generation that is installed away from people's homes, and since there are fewer places that can be installed on land, we are heading to offshore power generation, and Are increasingly going away. It is desirable to generate electricity at a place close to the place of residence, which consumes electricity, but it is desirable to be able to generate electricity at a place close to the place of residence. It is difficult to install power generators at the locations.

  Considering the possibility of using wind power without considering the problem of wind receiving methods, there are a huge number of buildings with a height of 20m or more in urban areas where strong winds can be easily obtained. If wind power generation can be easily performed using the rooftop of this huge building, we must take into account issues such as typhoons, salt damage, power transmission, etc. The need for specific promotion is reduced.

  In order to disseminate wind power generation using the rooftop of buildings, etc., not only is the conversion efficiency of wind power into rotational force good, but also damage to third parties in the surroundings due to broken blades and wind noise. There is a need for a windmill that is less prone to triggering and that can lessen the load impact of the device on the building.

  The recognition of the global warming problem and the fossil fuel resource depletion problem has spread to the general public, and solar power generation is spreading rapidly. It is difficult to address the problem, and in the future, small wind power generation, small hydropower generation, tidal power / wave power generation, etc. should be evaluated. In small wind power generation, conversion efficiency of wind power into rotational force It is good, and there is little risk of causing damage to third parties in the surroundings due to broken blades, wind noise, etc., less impact on the equipment building, and easy installation on the rooftop of the building. A small wind power generator capable of generating electricity is desired.

  For this reason, the present inventor considers the problems of each of the conventional wind receiving methods and proposes a new wind receiving type wind power generation that replaces them as “wind power generation device (Japanese Patent Laid-Open No. 2006-022746: Patent Documents)”. 1) "has already been filed. The wind power generation apparatus uses an impeller having three or more plate-like rotating blades protruding radially from a rotating shaft portion in a horizontal direction, and has a frame-shaped support frame portion for supporting both ends of the impeller, In order to wind-proof the lower half of the rotation range of the impeller on the windward side of the support frame part, having a main rotation support mechanism part that connects and supports this so that it can be rotated in the horizontal direction. Has a windshield part and a vertical tail part that exerts a rudder function on the leeward side, supports the position where the main rotation support mechanism part is eccentric to the windward side of the support frame part, and the outer periphery centering on the main rotation support mechanism part The main feature is that it has an auxiliary rotation support mechanism part that rotatably supports the support frame part. The “wind power generator” is a device that can achieve its purpose as it is.

  However, in the wind power generator, since the rotation shaft of the impeller is in the horizontal direction, the distance between the rotation shaft of the impeller and the generator must be increased, and it is unavoidable that some transmission loss of rotational force occurs. Since it is necessary to dispose a gear or the like for transmitting the rotational force at the end of the rotating shaft, there is a problem that not only a wasteful wind resistance portion is generated but also the center of gravity of the device is increased.

JP 2006-022746 A

The problem to be solved by the present invention is that it is difficult to install a large-scale propeller type power generation apparatus, etc., which is the main body of wind power generation, in a place close to a residential area, and thus the possibility of stably using strong winds The purpose is to provide a small wind power generation device that can easily generate wind power using the rooftop of a building of 20m or more that is enormously present in an urban area that is left unused even though it is high And
For this reason, as a proposal for solving the problems of the conventional wind turbine generator, since the rotation axis of the impeller, which is a problem of the wind turbine generator already filed by the present inventor, is in the horizontal direction, the rotation of the impeller The distance between the shaft and the generator must be large, and it is not easy to reduce the transmission loss of the rotational force, and it is necessary to arrange a gear for transmitting the rotational force at the end of the rotational shaft. It solves the problem that the center of gravity of the device becomes high as well as the resistance part, and the conversion efficiency to wind power is good, and damage to third parties in the surroundings due to broken blades, wind noise, etc. It is an object of the present invention to provide a small wind power generator that can be easily installed on the rooftop of a building and can easily generate electric power with less risk of being caused and less impact on the building of the device.

  In order to solve the above-described problem, the wind turbine generator of the present invention is supported at both ends so as to be rotatable, and has a rotation axis perpendicular to the airflow and perpendicular to the airflow, and has a short number of blades of 6 to 16 sheets. It is composed of a plate-like long member with a curved side and is fixed at both ends, and a gap of about 1/6 to 1/3 of the rotating diameter of the windmill is secured between the rotating shaft and the rotating shaft. Wind turbines that are radially arranged at equal intervals and air currents in the region of about 1/3 to 1/2 of the rotation diameter of the wind turbines that are arranged on the windward side of the wind turbines and do not effectively act on the rotational force of the wind turbines A plate-like air guide member disposed at an angle in the range of about 30 to 50 degrees with respect to the air flow so that the air can be guided to the region contributing to the rotational force of The windmill and the plate-like air guide member are arranged in a pair in a generally symmetrical form with the planar central portion of the device as the axis of symmetry. In addition, it has a rectangular tube-shaped portion surrounding the pair of wind turbines and the plate-like air guide member, and has a support frame in the lower portion, and the rectangular tube-shaped portion is eccentric to the windward side of the central portion. Auxiliary support mechanism part that is rotatably supported by the main support part fixed to the lower support frame at the position and supports the square cylindrical part rotatably on the outer periphery centering on the main support part Is disposed on the leeward side of the rectangular tube-shaped portion, and has an enlarged portion that expands on both sides at an angle of about 20 to 50 degrees toward the end portion, and a vertical tail portion that exhibits a rudder function at the top. Further, it is characterized in that a windproof chamber is provided at the lower part of the rectangular tube-shaped portion, and a rotation transmission mechanism for transmitting the rotational force of the generator and the windmill to the generator is provided therein.

According to the wind power generator of the present invention, by using an impulsive windmill as a windmill, the peripheral speed of the windmill does not increase rapidly even in strong winds, and there is a risk of causing damage to third parties around the blade due to broken blades, wind noise, etc. Less. Furthermore, by providing the plate-like air guide member, the conversion efficiency of wind power into rotational force is improved. Furthermore, since the rotating shaft of the windmill is in the vertical direction, the rotating shaft and the generator can be brought close to each other at the lower portion of the windmill, so that transmission loss of rotational force can be made and the center of gravity of the apparatus can be lowered. Furthermore, if a single windmill is used, the plate-shaped air guide member rotates the rectangular tube-shaped portion, so that it cannot be realized as a device, but by combining the wind turbine and the plate-like air guide member in a symmetrical form, Since the rotating forces cancel each other, the device can be realized, and the influence of the rotational pulsation that easily occurs in the impulse type windmill can be reduced by using two windmills. In addition, by decentering the support of the rectangular tube-shaped part to the windward side, by providing an enlarged part that expands on both sides toward the end on the leeward side of the rectangular tube-shaped part and a vertical tail part at the upper part, it is possible to change the wind direction. It becomes possible to cope easily. Further, since the stress can be distributed by arranging the auxiliary support mechanism part, the main support part for supporting the rectangular tube part and the support frame can be made as small as possible.
For this reason, it is possible to provide a small wind power generator capable of easily generating wind power by using a rooftop of a building having a size of 20 m or more existing in an urban area.

Front view and plan view showing an embodiment of the device of the present invention (a) Front view (b) Plan view FIG. 1 is a front cross-sectional view / planar cross-sectional view (c) a front cross-sectional view of the CC cross-section shown in FIG. 1 (d) a plan cross-sectional view of the DD cross-section. 1 is a plan sectional view of the section EE shown in FIG. 2. FIG. 2 is a sectional plan view of the section FF. 1 is a plan sectional view of the GG section shown in FIG. 2. FIG. 2 is a sectional plan view of the HG section. 1 is a side view / side cross-sectional view (i) side view (j) side cross-sectional view of the JJ cross section shown in FIG. Front view / plan sectional view (k) front view (l) plan sectional view of an embodiment different from the example of FIG. 1 when a wind turbine and a plate-like air guide member are paired in a symmetrical form

An embodiment of the apparatus of the present invention will be described with reference to FIGS.
As shown in FIGS. 1, 2 and 5, the device 1 of the present invention is rotatably supported at both upper and lower ends, and has a rotation axis 11 perpendicular to the air flow and in the vertical direction, and has 6 to 12 blades 12. It is a plate-like long member having a short side of which the number of the 16 sheets is curved, and the upper and lower ends are fixed to a disk-like member 13 fixed to the rotary shaft 11 and between the rotary shaft 11 In addition, a wind turbine 10 that is radially arranged at an equal interval with a clearance of about 1/6 to 1/3 of the rotational diameter of the wind turbine, and a wind turbine 10 that is disposed on the windward side of the wind turbine 10 are used for the rotational force of the wind turbine. In order to be able to guide the airflow in the region of about 1/3 to 1/2 of the rotational diameter of the windmill that does not work effectively to the region on the side that contributes to the rotational force of the windmill, the inclination angle θ1 is about It has a plate-like air guide member 21 disposed at an angle in the range of 30 to 50 degrees.
As shown in FIG. 2, the windmill 10 and the plate-shaped air guide member 21 are arranged in a pair with a substantially symmetrical form with the planar central portion of the apparatus as the axis of symmetry, and the pair of windmills 10. And a plate-like air guide member 21 are provided with a rectangular tube-shaped portion 30 and a support frame 40 is provided at the lower part.
In addition, the form which makes a pair by the symmetrical form of the windmill 10 and the plate-shaped wind guide member 21 may be a form as shown in FIG. 6 other than the example shown in FIG.
As shown in FIGS. 3 and 5, the rectangular tube-shaped portion 30 is rotatably supported by a main support portion 50 fixed to the lower support frame 40 at a position eccentric to the windward side of the central portion. In addition, as shown in FIGS. 1 (a), 4 (h), and 5, there is an auxiliary support mechanism portion 60 that rotatably supports the rectangular tubular portion 30 on the outer periphery centering on the main support portion. It is arranged.
As shown in FIGS. 1 and 2, the rectangular tube-shaped portion 30 has an enlarged portion 31 on the leeward side that expands on both sides at an opening angle θ2 of about 20 to 50 degrees toward the end portion. In addition, as shown in FIGS. 1 and 5 (i), a vertical tail portion 71 that exhibits a rudder function is provided at the leeward upper part.
As shown in FIGS. 1 (a) and 5, a windproof chamber 100 is provided in the lower part of the rectangular tube-shaped portion 30, as shown in FIGS. 2 (c), 3 and 5 (j). The windshielding chamber 100 includes a generator 80 and a rotation transmission mechanism 90 that transmits the rotational force of the windmill to the generator.

Hereinafter, what should be specially described for the main parts and members of the device of the present invention will be described.
Regarding the wind turbine 10, the material is preferably a material that has strength, durability, weather resistance, etc. that can achieve the purpose and can be made as light as possible. For example, aluminum alloy and fiber reinforced plastic are considered, but the purpose is achieved. It is not limited as long as it can be done. And in the blade | wing 12, the thing of the form which strengthened the curve to the outer peripheral side is preferable for the curved shape of a short side, and the number of blades is preferable 8-12 if a practical surface and an effect are considered.

  As for the plate-like air guide member 21, a material similar to the wind turbine 10 is used. And the inclination | tilt angle (theta) 1 with respect to airflow has the preferable range of about 35-45 degree | times if a practical surface and an effect are considered. Moreover, as shown in FIG.2 (d), it is preferable to arrange | position the wind guide member 22 along the outer periphery of a windmill on the leeward side.

  As for the rectangular tube-shaped portion 30, a material similar to the windmill 10 is used. As shown in FIG. 2, an internal partition / reinforcement member 22 is disposed between the pair of wind turbines for more effective use of wind power and strength reinforcement. Reinforcing is appropriately performed with a reinforcing member in consideration of not generating resistance as much as possible. As for the enlarged portion 31, the outward projecting dimension is preferably about ¼ to ½ of the lateral width of the rectangular tubular portion 30.

  As for the support frame 40, as shown in FIGS. 2 and 5, a frame is formed on the main frame 41, and a frame floor 42 is laid on the top.

  With respect to the main support part 50, as shown in FIG. 1A and FIGS. Coupling is performed with the upper receiving member 52 fixed by the fixed reinforcing member 53, and it is a pivotable support that also serves as prevention of detachment and displacement. The above-described example is an example, and is not limited as long as the object of the present invention can be achieved. In order to make the rotation smooth, a sliding member, a bearing member, and the like are appropriately disposed at the contact portion between the main support member 51 and the upper receiving member 52. And

  For the auxiliary support mechanism part 60, in order to reduce the burden on the main support part 50 and to make the rotation smoother, FIG. 1 (a), FIG. 2 (c), FIG. 4 (h), FIG. As shown, an auxiliary support mechanism portion 60 is disposed on the outer peripheral portion around the main support portion 50. And as a form of the auxiliary support mechanism part 60, what combined the roller mechanism and the support | pillar can be considered, for example, It will not be limited if the objective of this invention can be achieved. Moreover, although the number of arrangement | positioning places is illustrated in two places in the example figure, it should just be arrange | positioned with sufficient balance and the number of arrangement | positioning places will not be limited if it is two or more places.

  Regarding the generator 80, it is preferable that the rotating shaft can be easily installed in the vertical direction, and the generator 80 may be appropriately selected from those used in existing small wind power generators or the like. A generator that is lightweight and has high power generation efficiency is preferable.

  With respect to the rotation transmission mechanism 90, as shown in FIGS. 2 (c), 3 and 5 (j), the lower part of the rotating shaft 11 of the windmill 10 and the rotating shaft of the generator 80 are connected to transmit the rotational force. For example, a combination of a pulley / belt mechanism or a gear / chain mechanism 91 and a gear / gear mechanism 92 is conceivable, but is not limited as long as the object of the present invention can be achieved.

  With respect to the windproof room 100, as shown in FIG. 3, the front portion has an opening angle θ3 of about 30 to 50 degrees from the center toward both sides. A work door 101 is provided.

DESCRIPTION OF SYMBOLS 1; One Example apparatus of the wind power generator of this invention 10; Windmill 11; Rotating shaft 12; Blade | wing 13; Disc-shaped member 21; Plate-shaped wind guide member 22; Wind guide auxiliary member 30; Side expansion part 32; Internal partition / reinforcement member 40; Support frame 41; Main frame 42; Mount floor part 50; Main support part 51; Main support column member 52; Upper receiving member 53; Fixed reinforcement member 60; Auxiliary support mechanism part 71; vertical tail portion 80; generator 90; rotation transmission mechanism 91; pulley / belt mechanism or gear / chain mechanism 92; gear / gear mechanism 100; windbreak chamber 101; work door

Claims (1)

Both end portions are rotatably supported and are composed of a plate-like long member having a vertical axis of rotation perpendicular to the air flow and having 6 to 16 blades with a short side curved. Wind turbines that are fixed at a portion and are arranged radially at equal intervals while securing a gap of about 1/6 to 1/3 of the rotational diameter of the wind turbine between the rotary shaft and
The airflow in the region of about 1/3 to 1/2 of the rotational diameter of the windmill that is arranged on the windward side of the windmill and does not effectively act on the rotational force of the windmill can be guided to the region on the side that contributes to the rotational force of the windmill. In order to have a plate-like air guide member disposed at an angle in the range of about 30 to 50 degrees to the air flow,
And, the windmill and the plate-like air guide member are arranged in a pair in a generally symmetrical form with the planar central portion of the device as the axis of symmetry,
In addition, it has a square cylindrical part surrounding the pair of wind turbines and the plate-like air guide member, and has a support frame in the lower part,
Further, the square tube-shaped part is pivotally supported by a main support part fixed to the lower support frame at a position eccentric to the windward side of the center part, and on the outer peripheral part around the main support part. An auxiliary support mechanism part that rotatably supports the square tubular part is disposed, and an enlarged part that expands to both sides at an angle of about 20 to 50 degrees toward the end on the leeward side of the square tubular part. And has a vertical tail part that demonstrates the rudder function at the top,
The wind turbine generator further comprises a windbreak chamber at a lower portion of the rectangular tube-shaped portion, and a rotation transmission mechanism for transmitting the rotational force of the generator and the windmill to the generator.

Images