GB2530201A

GB2530201A - Wind driven generator having buffer device

Info

Publication number: GB2530201A
Application number: GB1521769.8A
Authority: GB
Inventors: Shigeru Ando
Original assignee: HONG XING TECHNOLOGY CO Ltd
Current assignee: HONG XING TECHNOLOGY CO Ltd
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2016-03-16
Also published as: JP3204736U; CN205423055U; GB201521769D0; WO2014194443A1; DE212013000304U1

Abstract

A wind driven generator having buffer devices (3); a base (1) is provided with a generator (11) thereon driven by a rotating shaft (12); a plurality of blades (21) of a windmill (2) are disposed on the periphery of the rotating shaft (12); support rods (23) are respectively connected between each blade (21) and the rotating shaft (12); buffer devices (3) having a seating part (31) and a retractable rod (32) are respectively connected between the rotating shaft (12) of the base (1) and each blade (21) of the windmill (2); one end of the retractable rod (32) is provided with a piston head (321) located inside the seating part (31), and the other end opposite the piston head (321) is pivotally connected to the inner side surface of the blade (21); a connecting rod (33) pivotally connected to the rotating shaft (12) is disposed on one side of the seating part (31) opposite the retractable rod (32); when a strong wind blows the windmill (2), the blades (21) thereof pull the retractable rod (32) to cause displacement of the piston head (321), and regulated oil (311) or an elastic element (312) inside the seating part (31) combine to generate damping effect supplemented by the reduction in blade rotation speed when the blades (21) deflect, thus avoiding structural damage or destruction caused by high rotation speed of the blades (21), solving the problem of bumping noise, and improving the overall function and effect.

Description

WIND POWER GENERATOR WTTH BUFFER DEVICE

BACKGROUND

1. Technical Field

100011 The present disclosure relates to a wind power generator with a buffer device, and more particularly to the buffer device linked between a rotation shaft of a base and blades of a windmill, where the buffer device has a main body and a retractable mechanism. Reserved oiling liquor or an elastic element inside the main body is used for generating a damping effect, and the rotation speed may be slowed dowil during deflecting of the blades, so as to prevent the structure of the wind power generator from being damaged or broken.

2. Description of Related Art

[0002] With the increasing of power consumption all over the world gradually, people continue to promote energy saving. They not only pay attention to save electricity but also try to create new ways for electricity supplying more actively. There are many ways to generate electricity except the nuclear electricity generation and the theimal power generation, for example, the hydraulic power generation, the solar power generation or the wind power generation. The wind power gellerator uses the wind power to drive a generator by rotating blades thereof, so as to generate electricity and save energy [0003] However, the blades ileed to face the wind at their windward sides and then drive the generator for electricity generation by using the wind power to drive the blades. Besides, the wind direction may also be varied because of several factors, including the weather, the season, the environment, and so on. In general, a large wind power generator for generating electricity by the wind power has a towenng pillar which has a cross-shaped blade disposed at the top portion thereof Thus, the wind power may drive the blade to be rotated. However, the wind power generator has some issues cunentlyç such as the great bulk, the expensive cost, the complex erection and the direction of the wind power generator cannot be changed, so the wind power generator is not widely used in practical applications. Besides, the conventional blades used for generating electricity are fixed on the outside of the central rotation shaft circularly, and the angles of the blades are fixed, so the blades cannot be adjusted to match with the wind power and the wind direction when the wind power and the wind direction are changed. Therefore, the function and the effect for the whole wind power generator will be limited.

[0004] Please refer to Fig. 9, which illustrates a partial side view for a conventional wind power generator. It can be seen from Fig. 9 clearly, a plurality of blades A2 are disposed around the exterior of a central rotation shaft Al of the wind power generator A, and two relative interlocking rods A12 are linked between the central rotation shaft Al and the blade A2. One counterweight joint A13 is disposed on the inside of the two interlocking rods A12. And, a backstop A14 disposed on the connection between the blade A2 and the interlocking rod A12 can be abutted against the interlocking rod A12 to prevent the interlocking rod A12 from being pushed from inside to outside during rotation of the interlocking rod A12. When the rotation of the blade A2 is diiven by the wind powel; each interlocking rod A 12 is pulled and driven to

I

raise the counterweight joint A 13, and the blade A2 may be spread outward.

Thus, during rotation of the blade A2, the deflection angle of the blade A2 can be adjusted according to the strength of the wind power, and the rotation speed of the blade A2 and the central rotation shaft Al can be controlled correspondingly.

100051 It is to be observed that each interlocking rod Al2 and the counterweight joint A13 of the wind power generator A are linked to each other with an active pivot manner. When the rotation of the blade A2 is driven by the stronger wind power, the counter weight joint A13 driven by the interlocking rod A12 may be raised too fast, which results in the unstable structure because the speed of the central rotation shaft Al cannot be decreased slowly. In fiarthem; it is also easy to make the central rotation shaft Al and the blade A2 rotate in over-speed, which results in failure or damage occurred in the wind power generator. Besides, when the counter weight joint A13 driven by the interlocking rod A12 is raised quickly, the collision power made by abutting the counter weight joint A13 upon the backstop A14 may become too huge to damage or destruct the whole structure and the interlocking rod A12 may not be pulled by the blade A2 easily, and it easily generates the resistance while the blade A2 is spread or collapsed, whereby the blade A2 or the interlocking rod A12 may be damaged as well. In brief, the whole structure of the wind power generator A is complex and cannot be fixed easily, so it needs an expert in this field to redesign a new wind power generator for solving this problem effectively.

SUMMARY

100061 To solve the problems and the drawbacks of the conventional wind power generator, the inventor concentrates on the solution and develops the disclosure by years of practical experience iii this field and wealth of professional knowledge. After hying and modifying the disclosure continuously, the inventor has designed this disclosure of a wind power generator with a buffer device.

100071 In order to realize the objective described as above, the technical solution of the present disclosure are described as below.

100081 The present disclosure provides a wind power generator with a buffer device. The wind power generator includes a base, a windmill and the buffer device. A generator is disposed on the base to be driven by a rotation shaft for generating electricity. A windmill with a plurality of blades is disposed around the exterior of the rotation shaft, and at least one support mechanism is linked between each of the blades and the rotation shaft. The support mechanism has a side pivoted on an inner side of the blade to have a deflection motion, and oilier side fixed on the rotation shaft. The rotation shaft of the base is linked to each of the blades of the windmill by the buffer device which has a main body and a retractable mechanism. The retractable mechanism has a piston head disposed on an end thereof and movably disposed in the main body to slow down the rotation speed of the blades, and other end of the retractable mechanism opposite to the piston head is pivoted on the inner side of each blade. At least one connecting rod is disposed on one side of the main body opposite to the retractable mechanism to be pivoted on the rotation shaft.

100091 Preferably, at least oiie side wing turned inward is disposed on a position approaching to the inner side of the blade of the windmill, and an angle is formed between each flank and the inner side of the blade.

100101 Preferably, a space is formed inside the main body of the buffer device. Reserved oiling liquor is stored in the space to provide the piston head of the retractable mechanism with a damping effect.

100111 Preferably, the space is formed inside the main body of the buffer device and an elastic element is disposed between the space of the main body and the piston head of the retractable mechanism. The elastic element has an end abutted against a wall inside the space, and other end abutted against the piston head of the retractable mechanism to perfonn an elastic defonnation.

100121 Compared with conventional technologies, the present disclosure has following advantages.

100131 V/hen the windmill of the present disclosure is blown by strong wind, the blades of the windmill pull the retractable mechanism to make the piston head move, and the reserved oiling liquor or the elastic element inside the main body generates the damping effect, the rotation speed may be slowed down effectively during deflecting of the blades, so as to prevent the structures of the blades from being damaged or broken subject to the high rotation speed.

And, the collision noise may be reduced as well and the whole function and effect for using the wind power generator may be increased.

100141 \Vhen the windmill of the present disclosure is blown by the strong wind, the plurality of blades disposed on the surroundings of the rotation shaft may stop rotating. The retractable mechanism of the buffer device may be affected by the reserved oiling liquor or the elastic element to shorten the displacement. The retractable mechanism may pull the blades to rotate on the support mechanism and spread the blades to a radial distribution. Thus, the inner side of each blade becomes a windward side to be blown by the wind to drive the rotation shaft to restart rotating. At the same time, the generator driven by the rotation shaft may start to operate. Unlike conventional wind power generators which require braking systems, the wind power generator of the present disclosure uses the principle of machinery to automatically control the rotation speed and does not need to reboot the system in a condition of no braking system. Besides, the time interval of standing is short, so the system can be started or stopped quickly, the effect for electricity generation could be increased.

[0015] When the blades of the windmill of the present disclosure are blown by the strong wind, the centrifugal force produced by gradually increasing the rotation speed of the windmill may drive the blades to deflect and rotate. And then, the blades are driven to form an enclosed status and they will not be moved by the strong wind. Simultaneously, the rotation shaft will be slowed dowmi, to protect die generator from being damaged or broken subject to the high rotation speed of the rotation shaft. The rotation speed of die plurality of blades of the windmill can be decreased by the buffer device, so the service life of the generator and the windmill can be extended efficiently [0016] In order to further understand the techniques, means and effects of die present disclosure, die following detailed descriptions and appended drawings are hereby refened, such that, through which, die purposes, features and aspects of the present disclosure can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference mid illustration, without any intention to be used for limiting the

present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

100171 The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the

principles of the present disclosure.

[0018] Fig. I shows a perspective view of the present disclosure.

[0019] Fig. 2 shows a vertical view of the present disclosure.

[0020] Fig. 3 shows a usage state view of the present disclosure.

[0021] Fig. 4 shows a side view of a part of the present disclosure.

100221 Fig. 5 shows a side view of the spread blades of the present

disclosure.

[0023] Fig. 6 shows a perspective view of the collapsed blades of the

present disclosure.

[0024] Fig. 7 shows a side view of a part of a preferred embodiment of

the present disclosure.

[0025] Fig. 8 shows a vertical view of another preferred embodiment of

the present disclosure.

100261 Fig. 9 shows a side view of a part of a conventional wind power generator.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

100271 Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated iii the accompanying drawings. Therefore, it is to be understood that the foregoing is illustrative of exemplary embodiments and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed exemplary embodiments, as well as other exemplary embodiments, are intended to be included within the scope of the appended claims. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art.

The relative proportions and ratios of elements in the drawings may be exaggerated or diminished in size for the sake of clarity and convenience in the drawings, and such arbitrary proportions are only illustrative and not limiting in any way. The same reference numbers are used in the drawings and the

description to refer to the same or like parts.

[0028] It will be understood that, although the terms first', second', third', etc., may be used herein to describe various elements, these elements should not be limited by these tenns. The tenns are used only for the purpose of distinguishing one component from another component. Thus, a first element discussed below could be termed a second element without departing from the teachings of embodiments. As used herein, the term or includes any and all combinations of one or more of the associated listed items.

100291 Please refer to Figs. 1-4, which are the perspective view, the vertical view, the use state view and the partial side view of the present

S

disclosure, respectively. It can be seen from the figures clearly, the wind power generator of the present disclosure includes a base 1, a windmill 2 and a buffer device 3.

100301 A generator 11 is disposed on the base 1 and a rotation shaft 12 is disposed on the generator 11, and the rotation shaft 12 stretches outward from the generator 11. After the rotation shaft 12 drives the generator 11 to transform the mechanical energy to the electricity energy, the electricity energy can be outputted into a battery or a rechargeable battery for storing or directly outputted to others electrical equipment for using. The technology of driving the generator 11 to produce electricity energy by using the rotation shaft 12 belongs to a prior art in related field, and the detailed components of the generator 11 are not the major features of the disclosure, so their repetitious

detailed descriptions are omitted.

[0031] The windmill 2 is disposed on the rotation shaft 12 of the base 1 and has a plurality of blades 21. The blade 21 has at least one axle seat 22 on an inner side 211 thereof opposite to the rotation shaft 12, and at least one support mechanism 23 is linked between each of the blades 21 and the rotation shaft 12.

The support mechanism 23 is pivoted on the axle seat 22 of the inner side 211 of the blade 21 by a side thereof, and fixed on the rotation shaft 12 by the other side thereof, so as to make the plurality of blades 21 deflect at the side of the support mechanism 23 respectively.

[0032] Besides, each of the plurality of blades 21 of the windmill 2 is an arc-shaped piece body, and die blades 21 are disposed around die exterior of die rotation shaft 12 of the base 1. When the plurality of blades 21 are driven by the stronger wind power to rotate rapidly, the blades 21 may deflect outward and collapse to form a sealed package in a ball-shaped appearance, so as to withstand the strong wind by gradually slowing down the rotation speed of the plurality of blades.

100331 The buffer device 3 is linked between the rotation shaft 12 of the base 1 and each blade 21 of the windmill 2, and has a main body 31 and a retractable mechanism 32. The preferred embodiment of the main body 31 may be a hydraulic cylinder, and a sealed space 310 fonned inside the main body 31 is used to store reserved oiling liquor 311 with a damping effect. A retractable mechanism 32 movable outwardly in a linear displacement is disposed inside the space 310 of the main body 31, and has a piston head 321 disposed in the space 310 at one end thereof, and the other end of the retractable mechanism 32 is pivoted on a position approaching to the thner side 211 of the blade 21. The main body 31 has at least one connecting rod 33 pivoted on the rotation shaft 12 at the end thereof opposite to the retractable mechanism 32.

[0034] Please refer to Figs. I and 4-6, which are the perspective view, the partial side view, the side view of spreading the blades and the side view of collapsing the blades of the present disclosure, respectively. It can be seen from the figures clearly, the wind power generator of the present disclosure may be installed on a position with the strong wind, such as the roof, the open country, the mountain or the seacoast. By the damping effect included by the reserved oiling liquor 311 stored inside the main body 31 of the buffer device 3, the displacement of the retractable mechanism 32 toward the main body 3 1 is shortened, and a part of the blade 21 of the windmill 2 approaching to one side II) of the inner side 211 is pulled by the retractable mechanism 32, such that the plurality of blades 21 run through the axle seat 22 and rotate on the support mechanism 23 in one angle, and they may be spread around the exterior of the rotation shaft 12 of the base 1 radially 100351 When the spaces formed by intervals of the spread blades of the windmill 2 are blown by natural wind, the blade 21 may be pushed by the wind power at the windward side thereof and the blades 21 drive the support mechanism 23 through the axle seat 22 to rotate with the rotation shaft 12 at the same time, whereby the generator ii may be driven to work by the rotation shaft 12. Because the time of rotating the blades or standing the blades is short, the generator 11 may start to generate electricity quickly.

100361 However, if the rotation speed of the rotation shaft 12 of the base 1 is speeded up subject to blowing of the strong wind on the plurality of blades 21 of the windmill 2, the centrifugal force produced by the blades 21 may pull the retractable mechanism 32 toward the outside of the main body 3 1 to stretch the displacement and drive the piston head 321 of the retractable mechanism 32 to move in the space 310 of the main body 31. The pressure of the reserved oiling liquor 311 flowed inside the space 310 will be risen to generate the damping effect. Thus, the rotation speed may be slow down effectively dining deflecting of the blades 21, so as to prevent the structure of the wind power generator from being damaged or broken subject to the over-high rotation speed of the blades 2!. And, the present disclosure may also reduce the collision noise, so as to improve the whole function and effect for using the wind power generator.

II

100371 When the plurality of blades 21 of the windmill 2 of the present disclosure are blown by the strong wind, the centrifugal force produced by gradually increasing the rotation speed of the windmill 2 may drive the blades 21 to deflect and rotate. And then, the blades 21 are driven to form an enclosed status and they will not be moved by the strong wind as well. Simultaneously, it will also make the rotation speed of the rotation shaft 12 slow down, to protect the generator I! from being damaged or broken subject to the over-high rotation speed of the rotation shaft 12. And, the rotation speed of the plurality of blades 21 of the windmill 2 may be decreased by using the buffer device 3, and the service life of the generator 11 and the windmill 2 may be extended effectively.

100381 Besides, when the windmill 2 is blown by the strong wind, the plurality of blades 21 disposed around the extenor of the rotation shaft 12 may stop rotating. However, the time interval of standing is short, so the retractable mechanism 32 of the buffer device 3 is effected by the reserved oiling liquor 311 inside the main body 3 1 and then it may shorten the displacement toward the main body 31, and the retractable mechanism 32 may pull the plurality of blades 21 to rotate on the support mechanism 23, so as to spread the blades 21 to a radial distribution. Furthei; the ililler side 211 of each blade 21 may become the windward side and the wind power may blow the inner side 211 to drive the rotation shaft 12 to restart rotating. At the same time, the generator 11 may start working to generate electricity by driving of the rotation shaft 12.

Unlike other conventional wind power generators which require braking systems, the wind power generator of the present disclosure uses the principle of machinery to automatically control the rotation speed and does not need to reboot the system in a condition of no braking system. Besides, the time interval of standing is short, so the system of the present disclosure can be started or stopped quickly, so as to increase the electricity generation effect of the gellerator 11.

[0039] Please refer to Figs. 2-4, and 7, which are the vertical view, the usage state view, the partial side view and the partial side view according to the preferred embodiment of the present disclosure, respectively. It can be seen from the figures clearly, the main body 3! of the buffer device 3 may be a vat, and the reserved oiling liquor 311 stored in the space 310 inside the main body 31 is one of preferred embodiments. Preferably, an elastic element 312 can also be disposed between the space 310 of the main body 31 and the piston head 321 of the retractable mechanism 32, and the elastic element 312 has an end abutted against a wall inside the space, and other end abutted against the piston head 321 of the retractable mechanism 32 to have an elastic deformation. The reserved oiling liquor 311 inside the space 310 may be omitted as well.

100401 When the blades 21 of the windmill 2 are blown by the strong wind, the centrifugal force produced by the blades 21 may pull the retractable mechanism 32 to make the piston head 32 have the moving displacement, and the elastic element 3 12 is abutted to form an elastic deformation, so as to generate the damping effect. Thus, the rotation speed may be slow down effectively during deflecting of the blades 21. After the blades 21 stop rotating, the retractable mechanism 32 of the buffer device 3 may be affected by the elastic restonng force of the elastic element 312, aiid then the displacement may be shortened and the blades 21 are pulled to rotate on the support mechanism 23, so as to spread the blades 21 to a radial distribution. Thus, the inner side 211 of each blade 21 becomes a windward side and the imier side 211 may drive the rotation shaft 12 to restart to rotate. At the same time, the generator 11 may start operating by driving of the rotation shaft 12. Unlike others conventional wind power generators which require braking systems, the wind power generator of the present disclosure uses the principle of machinery to automatically control the rotation speed and does not need to reboot the system in the condition of no braking system. And, the time interval of standing is short, so the system of the present disclosure can be started or stopped quickly, the electricity generation effect of the generator 11 could be increased.

100411 Please refer to Figs. 1-3 and 8, which are the perspective view, the vertical view, the usage state view and the vertical view according to another prefened embodiment of the present disclosure, respectively. It can be seen from the figures clearly, at least one side wing member 212 turned inward is disposed on a position approaching to the inner side 211 of each blade 21 of the windmill 2. In addition, in the preferred embodiment, the side wing member 212 may be an arc surface. However, it may also be a plane in practical applications, and a default angle is formed between the side wing member 212 and the inner side 211 of each blade 21. There are lots of manners to design the side sving member 212 of the blade 21, and the number, the angle and the length of the side wing member 212 may be changed according to practical applications. V/hen die spaces fonned by intervals of the spread blades 21 of die wiinthnill 2 are blown by natural wind, the pressure difference between the inside and the outside of the windmill 2 makes the nature wind blow into the side wing member 212 to generate a returning effect. When the plurality of blades 21 of the windmill 2 are blown by light wind, the rotation speed of the rotation shaft 12 of the base I will be speeded up graduall)ç so as to increase the electricity generation effect of the generator 11.

100421 The above-mentioned descriptions represent merely the exemplary embodiment of the present disclosure, without any intention to limit the scope of the present disclosure thereto. Various equivalent changes, alternations or modifications based on the claims of present disclosure are all consequently viewed as being embraced by the scope of the present disclosure.

Claims

WHAT IS CLAIMED IS: 1. A wind power generator, comprising a base, a windmill, a buffer device, and a generator disposed on the base being driven by a rotation shaft for generating electricity, wherein the windmill provided with a plurality of blades is disposed around the exterior of the rotation shaft, at least one support mechanism is linked between each of the blades and the rotation shaft, and has an end pivoted on an inner side of the blade to have a deflection motion, and other end fixed on the rotation shaft, the rotation shaft of the base is linked to each of the blades of the windmill by the buffer device which has a main body and a retractable mechanism, the retractable mechanism has a piston head disposed at an end thereof and located in the main body to slow down a speed of rotating the blades by making moving displacement, and other end of the retractable mechanism is pivoted on the inner side of the blade.
2. The wind power generator of claim 1, wherein the main body has at least one connecting rod pivoted on the rotation shaft at one end thereof opposite to the retractable mechanism, at least one side wing member turned inward is disposed on a position approaching to the inner side of the blade of the windmill, and an angle is formed between each flank and the inner side of each blade.
3. The wind power generator of claim 1, wherein a space is formed inside the main body of the buffer device, and reserved oiling liquor is stored in the space to provide the piston head of the retractable mechanism with a damping effect.
4. The wind power generator of claim I, wherein the space is formed inside the main body of the buffer device, an elastic element is disposed between the space of the main body and the piston head of the retractable mechanism, the elastic element has an end abutted against a wall inside the space, and other end abutted against the piston head of the retractable mechanism to provide an elastic deformation.