JP2005180308A - Wind power generation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid reduction in strength against external force of a bearing frame accompanied by weight reduction when the scale of a power generation system is small, easily secure the strength, enable efficient power generation with small limitation of an installation place by enhancing wind receiving amount effective to rotating force, and enable power generation in a windless state or slightly breezing state, which is a weak point of wind power generation. <P>SOLUTION: An impeller 2 which has plate-shaped rotary blades and of which rotational shaft is in the vertical direction is used and supported by the bearing frame 3 supported rotatably in the vertical direction on a support base part 4. A wind preventing member 5 capable of preventing wind in an approximately downward half of the rotating range of the impeller 2 to reduce wind receiving pressure, capable of introducing an approximately half of the wind receiving amount in the rotational force direction and serving as a reinforcing member by being fixed to the bearing frame 3 is provided in the upwind side of the bearing frame 3, and a vertical tail unit 6 for rotating the bearing frame 3 corresponding to change in wind direction is provided in the downwind side. In addition, a solar battery is equipped, and a light receiving plate 9 is provided at least on an upper part outer face of the bearing frame 3 to also enable solar power generation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wind turbine generator, and in particular, can receive wind while appropriately facing a change in wind direction using an impeller having a plate-like rotating blade and a rotating shaft in a horizontal direction. The present invention relates to a wind power generator of a wind receiving system that can increase the rotational force.

  Conventionally known propeller type, Savonius type, Darius type wind turbines and the like are known as wind power receiving methods. Each wind receiving method has its advantages and disadvantages when used. For example, the propeller type can be expected to generate a large power output by making the rotor blade longer and the diameter of the rotor larger. Because it is necessary to deal with the strong winds and the damage to the surroundings due to the breakage and scattering of the rotor blades must be taken into consideration, the installation location is limited, and those that are similar to the Savonius type and Darius type have a rotating shaft in the vertical direction Therefore, it is easy to generate electricity at a position that does not require too much height from the surface of the installation base, and there are relatively few installation places. However, depending on the rotational position of the rotor blades, the received wind acts as a resistance to rotation. Since the wind speed is different in the height direction even at the same point, it is difficult to say that the conversion of wind energy into rotational energy is efficient and it is difficult to expect large output due to enlargement.

  In recent years, wind power generation has become more and more important as an environmentally friendly power generation method, but not only is it focused on the propulsion of large propeller systems where installation locations are limited, but also to respond to this. Proposals for new power generation methods are also required. For this reason, the present inventor has already filed a “wind power generator (Japanese Patent Application No. 2003-101208)” as a proposal of a new power generation method in consideration of the pros and cons of each wind receiving method. The purpose of the proposal is to use an impeller having rotating blades that receive wind on a plate-like surface and having a rotating shaft in the horizontal direction and supported at both ends of the rotating shaft, and the support structure of the impeller is above the support base. This makes it possible to rotate at a position where it can respond to changes in the wind direction, facilitating power generation at a position that does not require much height from the surface of the installation base, and about half of the rotation range of the impeller can be windproof on the windward side of the support frame. A windproof plate that can move up and down is installed, and when the wind is weak, the lower half of the impeller is windshielded, and the rotational force of the rotating blades is eliminated to increase the rotational force of the impeller, increasing the rotational force of the impeller upward. By moving and adjusting the rotational force by reducing the amount of received air, avoiding the possibility of damage or failure due to abnormal rotation of the impeller, efficient and more stable power generation under a wide range of conditions from light to strong winds Savonius type with less installation location than propeller type It is to provide a power generation possible wind turbine generator efficient large output than.

However, the above-mentioned proposal can achieve its purpose as it is if the strength of the support frame is ensured. However, if the scale is small, there is a high possibility that weight reduction is required. In order to meet the demand for weight reduction, the support frame has a quadrangular frame shape and may be deformed by an external force such as wind. For this reason, a measure that can ensure the strength against external force while satisfying the demand for weight reduction is desired. In addition to the proposals described above, in a wind power generator, it is difficult to generate power when there is no wind or light wind, but it is desired that power generation be possible in this case as well. By the way, when the scale is small, since the rotation diameter of the impeller is small and the wind receiving amount itself is small, there is a side where the significance of adjusting the wind receiving amount by moving the windbreak plate upward in a strong wind is small.
Japanese Patent Application No. 2003-101208

  The problem to be solved by the present invention is that the inventor has a rotating blade that receives wind on a plate-like surface according to an already filed application, the rotating shaft is in a horizontal direction, and both ends of the rotating shaft are supported by a support frame. In a power generation system using a car, inherits the advantage that there are few limitations on the installation location, and avoids the risk of strength reduction against deformation due to external forces such as wind of the support frame due to the demand for weight reduction when the scale is small Therefore, it is intended to make it possible to easily secure the strength against the external force of the support frame and to increase the amount of air received effective for the rotational force so that the power generation can be performed more efficiently than the Savonius type. Furthermore, it is to be able to generate power even when there is no wind or light wind, which is a weak point of wind power generation.

  In order to achieve the above object, the wind turbine generator according to the present invention uses an impeller having three or more plate-like rotating blades radially projecting from the rotating shaft and having the rotating shaft in the horizontal direction. The support frame has a rectangular tube shape with a rotation diameter of the impeller that supports both ends of the rotation shaft and an approximate size width, and has a connecting rotation mechanism that can connect and support the support frame and can rotate horizontally. It has a support base, and on the windward side of the support frame, the apex angle is about 60 to 90 degrees so that about half of the rotation range of the impeller can be windproof and the received pressure can be reduced. A windbreak member with an equilateral shape or a part of an ellipse in contact with its apex is fixed, and a vertical tail is fixed on the leeward side so that it can always face the wind direction in which the specific surface of the support frame changes. The windproof member is fixed to the support frame. It becomes a reinforcing member for securing the strength to resist deformation by external force etc., characterized in that the generator is provided that is operated by the rotating force of the impeller. In addition, a solar cell light receiving plate is attached to at least the upper outer surface of the support frame so that solar power generation is possible.

  According to the present invention, there is used an impeller that has been proposed by the present inventor and has a rotating blade that receives air on a plate-like surface, the rotating shaft is in a horizontal direction, and both ends of the rotating shaft are supported by a support frame. It can easily respond to the demand for weight reduction in wind power generation with a small scale in the existing power generation equipment, and there is no limitation on the installation place, and more efficient power generation than Savonius type etc. is possible, and no wind is a weak point of wind power generation Alternatively, it is possible to provide a wind power generator that can generate power even in a light wind.

  As the best mode of the wind power generator of the present invention, the wind turbine generator includes the components shown in the means for solving the problems and includes the following. The impeller has about six plate-like rotor blades, and the rotor blades are provided with a dogleg shape or a curved portion in the vicinity of the outer peripheral side in order to enhance the wind receiving effect. The support frame has a rectangular frame shape with a width that is slightly larger than the rotation diameter of the impeller due to the main support part of the main part that forms a belt-like square frame shape that supports the rotation shaft of the impeller and thin plates on both sides thereof. It consists of a side portion or the like that is provided with a streak-like reinforcement that takes into account the influence of wind on a thin plate. The support base portion incorporates a connecting rotation mechanism portion that can connect and support the support frame at the connection portion with the support frame and that can rotate. The windbreak member can wind-proof the lower half of the impeller to reduce wind resistance, and can guide about half of the wind receiving amount in the direction of the rotational force of the impeller, and further increase the rigidity as a strength member. A plate is reinforced so that an isosceles shape with an angle of 60 to 80 degrees or a part of an ellipse in contact with its apex is formed, and a fixed portion and an intermediate portion of the support frame are orthogonal to the cross section. The vertical tail is effective to oppose the changing wind direction of the support frame, and the fixed part with the support frame should be reinforced so that there is little invalid wind resistance so that it can contribute to strengthening the strength of the support frame. preferable. The generator is not limited as long as it can be applied to the wind power generator, but a generator that is as small as possible and that has good power generation efficiency is preferable. As a method of transmitting the rotational force of the impeller to the generator, a rotational force transmission mechanism with as little transmission loss as possible may be used, and a speed change mechanism may be incorporated as necessary. Then, a solar cell light receiving plate is attached to at least the upper outer surface of the support frame so that solar power can be generated so that power can be generated even with no wind or light wind.

  1 is a front view illustrating a wind power generator according to the present invention, FIG. 2 is a side view, FIG. 3 is a longitudinal sectional view, and FIG. 4 is a plan view. Hereinafter, a wind power generator according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the wind turbine generator 1 according to the present invention has an impeller 2 whose main part has rotating blades projecting radially from the rotating shaft, and the rotating shaft is in the horizontal direction. A side-shaped rectangular frame-shaped main support part 3a for supporting both ends of the rotary shaft, and a side of a square tube with a width that can be provided on both sides of the part 3a so as not to hinder the rotation of the impeller 2 A support frame 3 mainly composed of a part 3b, and a connecting rotation mechanism in which a support base main body part 4a is fixed to a ground surface or a frame 11 of a building, and the support frame 3 is connected and supported to be horizontally rotatable. The support base 4 having the portion 4b, and the lower half of the rotation range of the impeller 2 on the windward side of the support frame 3 can be wind-shielded to reduce the received pressure, and about half of the received amount is impeller 2 Windproof part that can guide wind in the direction of the rotational force and becomes a strength member by fixing to the support frame 3 5 and a vertical tail 6 that is fixed on the leeward side of the support frame 3 and rotates the support frame 3 in response to changes in the wind direction, and a generator 7 that operates by the rotational force of the impeller 2 and the rotational force. It comprises a rotational force transmission mechanism 8 for transmission. In addition, a solar cell is provided, and a solar cell light-receiving plate 9 is attached to at least the upper outer surface of the support frame 3, and if necessary, a part 10 of solar cell components and devices are placed in the vicinity of the generator 7. It is arranged so that it can also generate solar power. Hereinafter, main parts, devices, and the like related to the wind power generator will be described in addition.

  As shown in FIG. 3, the impeller 2 has three or more plate-like rotary blades that protrude substantially radially from the rotary shaft while maintaining an equal angle or interval therebetween. The connecting method of the rotor blade and the rotating shaft is not limited as long as it can be integrated and the object of the present invention can be achieved. As the material, for example, a metal such as iron, stainless steel, a titanium alloy, duralumin, or a high strength plastic such as a high strength plastic such as an alloy or polycarbonate, and a fiber reinforced plastic such as carbon fiber can be considered. Usually, about 4 to 6 rotor blades are preferable, and the rotor blade is preferably a flat plate, but from the viewpoint of improving the wind receiving effect, it is preferable to provide a shape portion similar to a square shape or a curved shape, for example, It is preferable that the inner angle is approximately 90 to 120 degrees in the square shape. The rotating shaft has projecting portions that project from both ends of the rotor blades, and the projecting portions can be supported by the support frame 3 and have durability for maintaining the support.

  As shown in FIGS. 1 to 4, the support frame 3 is a thin plate member attached to the outer surface of the side part 3 b as necessary in addition to the main components of the main support part 3 a and the side part 3 b, and the influence of wind. In consideration of the above, a stiffened reinforcing portion 3c joined in a streaky manner, and at an angle of about 30 degrees upward from the horizontal plane at the upwind side tip of the upper surface of the side portion 3a up to the height of the streaky reinforcing portion 3c. It is preferable to attach the air guide member 3d fixed so as to increase the amount of received air that contributes to the rotational force of the impeller with a width of. In addition to the streak reinforcing portion 3c, members for reinforcing the strength of the main support portion 3a and the side portion 3b may be fixed in consideration of the influence of wind. The material is appropriately selected from the materials exemplified for the impeller 2 in consideration of the required strength. Further, as a method for supporting the impeller 2, for example, a supporting method incorporating a mechanism similar to a ball bearing can be considered in accordance with a method commonly used for supporting a rotating shaft of an existing rotating machine. It is not limited as long as it can be achieved.

  As shown in FIGS. 1 to 3, the support base part 4 has a connection rotation mechanism part 4 b on the upper part of the support base body part 4 a to enable connection support of the support frame 3 and horizontal rotation. Steel or reinforced concrete is mainly used as the material of the support base body part 4a, and the connection rotation mechanism part 4b is incorporated with a support method considering not only the support from the lower side of the support frame 3 but also the horizontal direction and prevention of lifting. As a structure that enables smooth rotation, it can reduce frictional resistance by, for example, mixing a mechanism similar to a ball bearing or polytetrafluoroethylene, graphite or the like into other plastic materials. It is possible to use a mechanism that incorporates a sliding member as a sliding member, or a structure that incorporates a mechanism that uses a lubricant such as oil, etc., but the friction resistance is reduced, smooth rotation and upper support strength are ensured. It will not be limited if the objective of invention can be achieved. In addition, fixing to the ground is done by laying and fixing a concrete foundation or the like as a foundation as necessary, and fixing to a frame such as a building is fixed using an anchor bolt or the like.

  As shown in FIGS. 1 to 3, the wind-proof member 5 includes a reinforcing member 5 b using a thin plate at an appropriate interval between the both ends on the inner corner side of the wind-proof main part 5 a and an intermediate portion, and is joined by welding or a bolt, The windproof member 5 is fixed to the supporting frame 3 mainly by welding or bolts at the reinforcing members 5b at both ends, and the supporting frame 3 is reinforced as a reinforcing member. As the material, a material according to the impeller 2 or the support frame 3 is used.

  As shown in FIGS. 3 to 4, the vertical tail 6 has a thin plate-like reinforcing member 6 b joined to the tail main part 6 a, and the tail main part 6 a changes its wind direction in consideration of weight reduction while maintaining strength. It has a shape that ensures a larger wind-receiving surface at a distance away from the rotation axis so that the reactivity of the is increased. As the material, a material according to the windproof member 5 is used. Then, it is preferable to fix the tail main part 6a and the reinforcing member 6b to the support frame 3 so that the fixing strength can be increased and the strength of the support frame 3 can be enhanced.

  The generator 7 can be used as long as it can be applied to this wind power generator, but is preferably as small as possible and having high power generation efficiency. As shown in FIG. 1, the center of the lower part of the support part 3a of the support frame 3 is used. Although it is preferable to arrange | position in the vicinity of a part, it is not limited.

  The rotational force transmission mechanism 8 is a transmission mechanism that minimizes transmission loss of rotational force. For example, as shown in FIGS. 1 and 3, the blades are arranged so as to minimize the missing part of the rotating blades in the middle portion of the impeller 2. A method of incorporating the vehicle-side gear 8a and transmitting the rotational force of the impeller 2 through the generator-side gear 8b linked thereto can be considered. However, if the transmission mechanism has a transmission loss of rotational force as small as possible, The mechanism is not limited to the example, and may be a mechanism using other transmission means such as a belt. Further, a transmission mechanism may be incorporated as necessary.

  The light receiving plate 9 of the solar cell is preferably lightweight and has high power generation efficiency, and is attached to at least the upper outer surface of the support frame 3 as shown in FIGS. It is also preferable to additionally attach to a place where the outer surface of the upper half or the like can be disposed. In addition, constituent members and devices other than the light receiving plate 9 necessary for solar power generation are provided in accordance with currently used solar cells, and as necessary, a part 10 of the constituent members and devices may be used as shown in FIG. It is also preferable that solar power generation be possible by arranging it in the vicinity of the generator 7.

  Hydrogen gas for fuel cells that can be used as a global environment-friendly power generation device to replace thermal power generation, which is a cause of deterioration of the global environment such as global warming, and nuclear power generation, where safety remains an issue, and is expected in the future It can also be used for manufacturing by electrolysis.

It is a front view which illustrates the wind power generator concerning the present invention. It is a side view which illustrates the wind power generator concerning the present invention. 1 is a longitudinal sectional view illustrating a wind power generator according to the present invention. It is a top view which illustrates the wind power generator concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Wind power generator 2 of this invention 2; Impeller 3; Support frame 3a; Main support part 3b of support frame; Side part 3c of support frame; Streak reinforcement part 3d of side part; Wind guide member 4 fixed to the upper protrusion 4; support base portion 4a; support base body portion 4b of support base portion; connecting rotation mechanism portion of support base portion 5; windproof member 5a; windproof main portion 5b of windproof member; Windproof member reinforcement member 6; vertical tail 6a; tail portion of vertical tail 6b; vertical tail member 7; generator 7
8; Rotational force transmission mechanism 8a; Impeller side gear of rotational force transmission mechanism 8b; Generator side gear of rotational force transmission mechanism 9; Photosensitive plate of solar cell 10; Components other than the photosensitive plate necessary for solar power generation and Part of equipment 11; Ground surface or building frame, etc.

Claims (2)

  An impeller having three or more plate-like rotor blades protruding radially from the rotating shaft and having the rotating shaft in the horizontal direction is used, and the rotating diameter and approximate dimensions of the impeller that supports both ends of the rotating shaft of the impeller A support frame having a square tube shape with a width and a support base part having a connecting rotation mechanism part for connecting and supporting the support frame and rotating in the horizontal direction, and the impeller on the windward side of the support frame A cross section that forms an isosceles shape with an apex angle in the range of about 60 to 90 degrees or a part of an ellipse that touches the apex in order to be able to wind-proof and reduce the wind pressure of the lower half of the rotation range. The vertical tail is fixed on the leeward side so that the specific surface of the support frame can always face the changing wind direction, and the wind-proof member is fixed on the support frame. Supplement to ensure strength against deformation caused by external force such as It becomes a member, the wind turbine generator, wherein the generator is provided that is operated by the rotating force of the impeller.   The wind power generator according to claim 1, wherein a solar cell light receiving plate is attached to at least an upper outer surface of the support frame so that solar power generation is possible.

Images