JPH11303726A - Piezoelectric wind power generator - Google Patents
Piezoelectric wind power generatorInfo
- Publication number
- JPH11303726A JPH11303726A JP10113677A JP11367798A JPH11303726A JP H11303726 A JPH11303726 A JP H11303726A JP 10113677 A JP10113677 A JP 10113677A JP 11367798 A JP11367798 A JP 11367798A JP H11303726 A JPH11303726 A JP H11303726A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- piezoelectric
- wind
- diaphragms
- vortex generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、風力から電気エネ
ルギーを取り出すことを可能とする風力発電機に関し、
より詳細には、圧電素子を用いて風力から電力を取り出
すことを可能とする圧電型風力発電機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind power generator capable of extracting electric energy from wind power.
More specifically, the present invention relates to a piezoelectric wind power generator that can extract power from wind using a piezoelectric element.
【０００２】[0002]
【従来の技術】従来、発電方法としては、水力発電、原
子力発電、火力発電、太陽電池を用いた発電方法、風力
発電などの様々な方法が知られている。もっとも、立地
条件の制約及び電力事業の高まりに伴って、水力発電に
代わり、現在では、原子力発電及び火力発電が主として
用いられている。2. Description of the Related Art Conventionally, various power generation methods are known, such as hydroelectric power generation, nuclear power generation, thermal power generation, a power generation method using solar cells, and wind power generation. However, nuclear power and thermal power are now mainly used in place of hydroelectric power due to restrictions on location conditions and growing power business.
【０００３】しかしながら、原子力発電や火力発電で
は、化石燃料を使用するため、大気汚染や放射線による
汚染等を引き起こすおそれがあった。そこで、太陽エネ
ルギーや風力などのいわゆるクリーンなエネルギーを用
いた発電方法が注目されている。[0003] However, nuclear power generation and thermal power generation use fossil fuels, which may cause air pollution and radiation pollution. Therefore, a power generation method using so-called clean energy such as solar energy or wind power has attracted attention.
【０００４】図４は、従来の風力発電装置の一例を示す
斜視図である。風力発電装置５１では、回転軸５２の上
端に電磁型発電機５３が取り付けられている。電磁型発
電機５３には、羽根５４ａ〜５４ｃの一端が固定された
回転部材５４が取り付けられている。FIG. 4 is a perspective view showing an example of a conventional wind power generator. In the wind power generator 51, an electromagnetic generator 53 is attached to an upper end of a rotating shaft 52. A rotating member 54 to which one ends of the blades 54a to 54c are fixed is attached to the electromagnetic generator 53.
【０００５】発電に際しては、回転軸５２を軸周りに回
転させ、羽根５４ａ〜５４ｃを風上の方向に位置させ
る。その結果、風力により羽根５４ａ〜５４ｃを有する
回転部材５４が回転し、この回転に伴うエネルギーが電
磁型発電機５３により電力として取り出される。At the time of power generation, the rotating shaft 52 is rotated around the axis, and the blades 54a to 54c are positioned in the windward direction. As a result, the rotating member 54 having the blades 54a to 54c is rotated by the wind force, and the energy accompanying the rotation is extracted as electric power by the electromagnetic generator 53.
【０００６】[0006]
【発明が解決しようとする課題】従来の風力発電機５１
では、電磁型発電機５３を用いて運動エネルギーが電気
エネルギーに変換され、それによって電力が取り出され
ていた。しかしながら、回転部材５４の回転に伴う運動
エネルギーを電気エネルギーに効率的に変換することが
できず、エネルギー変換効率が低かった。The conventional wind power generator 51
In the above, the kinetic energy was converted to electric energy using the electromagnetic generator 53, and power was thereby extracted. However, the kinetic energy associated with the rotation of the rotating member 54 could not be efficiently converted to electric energy, and the energy conversion efficiency was low.
【０００７】そのため、大きな電力を得るには、羽根５
４ａ〜５４ｃとして、かなり大型のものを用意しなけれ
ばならなかった。従って、全体の構造が複雑かつ大型化
し、コストも高くつくという問題があった。Therefore, in order to obtain a large electric power, the blade 5
As 4a to 54c, quite large ones had to be prepared. Accordingly, there has been a problem that the entire structure is complicated and large, and the cost is high.
【０００８】加えて、従来の風力発電装置５１は、上記
のようにかなり大型であるため、取り付け場所にも制約
があり、現実には、大きなスペースを確保し得る土地に
おいて、所定の間隔を隔ててかなりの数の風力発電機５
１が設置されていることが多い。In addition, since the conventional wind power generator 51 is quite large as described above, the installation place is also restricted, and in reality, in a land where a large space can be secured, a predetermined space is required. And quite a few wind generators 5
1 is often installed.
【０００９】本発明の目的は、従来の風力発電機の欠点
を解消し、エネルギー変換効率に優れており、さらに比
較的簡単な構造を有し、かつ小型化が容易である安価な
風力発電機を提供することにある。An object of the present invention is to eliminate the drawbacks of the conventional wind power generators, to provide an excellent energy conversion efficiency, to have a relatively simple structure, and to be easy to reduce the size of an inexpensive wind power generator. Is to provide.
【００１０】[0010]
【課題を解決するための手段】本発明は、上記課題を達
成するためになされたものであり、圧電素子を用いて機
械エネルギーを電気エネルギーに変換することにより風
力から電力を取り出すものである。Means for Solving the Problems The present invention has been made to achieve the above-mentioned object, and extracts electric power from wind by converting mechanical energy into electric energy using a piezoelectric element.
【００１１】請求項１に記載の発明に係る圧電型風力発
電機は、振動板と、前記振動板に固定されており、風を
受けた際に振動板を振動させるような空気の渦流を発生
させるための渦発生部材と、前記振動板に固定されてお
り、かつ振動板の振動を受けて電力を取り出すことを可
能とする圧電素子とを備えることを特徴とする。According to the first aspect of the present invention, there is provided a piezoelectric wind power generator which is fixed to the vibration plate and generates a vortex of air which vibrates the vibration plate when receiving a wind. And a piezoelectric element fixed to the diaphragm and capable of extracting electric power by receiving vibration of the diaphragm.
【００１２】請求項２に記載の発明では、前記圧電型風
力発電機に連結されており、かつ回転自在に支持されて
いる回転軸をさらに備え、前記渦発生部材と圧電素子を
挟んで反対側の振動板端部が風上方向を向くように渦発
生部材が構成されている。According to the second aspect of the present invention, the apparatus further comprises a rotating shaft connected to the piezoelectric wind power generator and rotatably supported, and opposite to the vortex generating member with respect to the piezoelectric element. The vortex generating member is configured such that the end of the diaphragm faces upwind.
【００１３】請求項３に記載の発明では、請求項１に記
載の発明に係る圧電型風力発電機が複数備えられてお
り、この複数の圧電型風力発電機として共振周波数が異
なる振動板を有するものが用いられる。According to a third aspect of the present invention, there are provided a plurality of piezoelectric wind power generators according to the first aspect of the present invention, and the plurality of piezoelectric wind power generators have diaphragms having different resonance frequencies. Things are used.
【００１４】請求項４に記載の発明に係る圧電型風力発
電機は、一端側において連結されており、他端側におけ
る間隔が連結されている側の間隔よりも広くされている
第１，第２の振動板と、前記第１，第２の振動板にそれ
ぞれ固定されており、風を受けた際に振動板を振動させ
るような空気の渦流を発生させるための第１，第２の渦
発生部材と、前記第１，第２の振動板にそれぞれ固定さ
れており、振動板の振動を受けて電力を取り出すことを
可能とする第１，第２の圧電素子とを備え、風を受けた
際に、一端側で連結された第１，第２の振動板が音叉型
振動を発生するように構成されていることを特徴とす
る。According to a fourth aspect of the present invention, there is provided a piezoelectric wind power generator, wherein the first and second wind turbines are connected at one end and the interval at the other end is wider than the interval at the connected end. And a first and a second vortex fixed to the first and second diaphragms, respectively, for generating a vortex of air that vibrates the diaphragms when receiving wind. A generating member, and first and second piezoelectric elements fixed to the first and second diaphragms, respectively, and capable of extracting electric power by receiving vibrations of the diaphragms. In this case, the first and second diaphragms connected at one end side are configured to generate a tuning fork type vibration.
【００１５】請求項５に記載の発明では、前記第１，第
２の振動板の連結部分に一端側が連結されており、連結
部分側とは反対側の端部の間隔が連結部分側端部の間隔
よりも広くされている第３，第４の振動板と、前記第
３，第４の振動板にそれぞれ固定されており、風を受け
た際に振動板を振動させるような空気の渦流を発生させ
る第３，第４の渦発生部材と、前記第３，第４の振動板
にそれぞれ固定されており、振動板の振動を受けて電力
を取り出すことを可能とする第３，第４の圧電素子とを
さらに備え、前記第３，第４の振動板により音叉型振動
が発生するように構成されておりかつ第１，第２の振動
板により発生される音叉型振動と、第３，第４の振動板
により発生される音叉型振動の周波数が異ならされてい
る。According to the fifth aspect of the present invention, one end is connected to the connecting portion of the first and second diaphragms, and the interval between the ends opposite to the connecting portion is equal to the connecting portion side end. And fourth oscillating plates which are wider than the distance between the first and second oscillating plates, and the eddy current of air which is fixed to the third and fourth oscillating plates, respectively, and vibrates the oscillating plates when receiving a wind Third and fourth vortex generating members for generating vibrations, and third and fourth vortex generating members fixed to the third and fourth diaphragms, respectively, and capable of receiving electric power by receiving vibrations of the diaphragms. And a tuning fork type vibration generated by the first and second diaphragms, wherein the third and fourth diaphragms generate a tuning fork type vibration. The frequency of the tuning fork type vibration generated by the fourth diaphragm is made different.
【００１６】請求項６に記載の発明では、前記連結部に
固定されており、かつ回転自在に支持された回転軸をさ
らに備え、前記連結部側が風上方向を向くように構成さ
れている。According to the invention described in claim 6, a rotary shaft fixed to the connecting portion and rotatably supported is further provided, and the connecting portion side is directed to the windward direction.
【００１７】請求項７に記載の発明では、前記振動板に
おいて、渦発生部材が、圧電素子を挟んで振動板が連結
されている部分とは反対側に固定されている。請求項８
に記載の発明では、上記渦発生部材が、該渦発生部材が
固定されている振動板の主面に沿って流れてきた風の方
向を変えるように、該主面に対して所定の角度をなす面
を有する部材により構成されている。According to the seventh aspect of the present invention, in the vibration plate, the vortex generating member is fixed to a side opposite to a portion where the vibration plate is connected across the piezoelectric element. Claim 8
In the invention described in (1), the vortex generating member forms a predetermined angle with respect to the main surface so as to change the direction of wind flowing along the main surface of the diaphragm to which the vortex generating member is fixed. It is constituted by a member having a surface to be formed.
【００１８】請求項９に記載の発明では、前記渦発生部
材が、振動板と一体に構成されている。請求項１０に記
載の発明では、前記渦発生部材が、振動板の端部を折り
曲げることにより構成されている。According to the ninth aspect of the present invention, the vortex generating member is formed integrally with the diaphragm. According to the tenth aspect of the present invention, the vortex generating member is configured by bending an end of the diaphragm.
【００１９】[0019]
【発明の実施の形態】以下、図面を参照しつつ本発明の
非限定的な実施例を挙げることにより、本発明をより具
体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by giving non-limiting embodiments of the present invention with reference to the drawings.
【００２０】図１は、本発明の第１の実施例に係る圧電
型風力発電機を説明するための斜視図である。圧電型風
力発電機１は、軸受２に回転自在に軸支された回転軸３
を有する。回転軸３の上端には、風の方向を示すロッド
４が回転軸３と直交する方向を向くように固定されてい
る。ロッド４の先端には、風上方向を示す矢印となる円
錐状先端部４ａが形成されている。FIG. 1 is a perspective view illustrating a piezoelectric wind power generator according to a first embodiment of the present invention. The piezoelectric wind turbine 1 includes a rotating shaft 3 rotatably supported by a bearing 2.
Having. A rod 4 indicating the direction of the wind is fixed to the upper end of the rotating shaft 3 so as to face a direction orthogonal to the rotating shaft 3. At the distal end of the rod 4, a conical distal end portion 4a that is an arrow indicating the windward direction is formed.
【００２１】ロッド４の後端には、第１，第２の振動板
５，６が固定されている。第１，第２の振動板５，６
は、その長さ方向にそって屈曲振動をし得るように構成
された細長い矩形の板状部材により構成されている。振
動板５，６は、前端側において、連結部７により連結さ
れている。振動板５，６の後端側の間隔は、連結部７側
における振動板５，６の間隔よりも広げられている。First and second diaphragms 5 and 6 are fixed to the rear end of the rod 4. First and second diaphragms 5, 6
Is constituted by an elongated rectangular plate-like member configured to be capable of bending vibration along its length direction. The diaphragms 5 and 6 are connected by a connecting portion 7 on the front end side. The interval between the rear ends of the diaphragms 5 and 6 is wider than the interval between the diaphragms 5 and 6 on the connecting portion 7 side.
【００２２】振動板５，６は、屈曲振動が生じ易い、弾
性変形し得る材料、例えば金属により構成することが望
ましいが、合成樹脂などの他の材料で構成してもよい。
振動板５，６の後端には、振動板５，６の端部を折り曲
げることにより、渦発生部材５ａ，６ａが形成されてい
る。The diaphragms 5 and 6 are desirably made of a material which is liable to cause bending vibration and can be elastically deformed, for example, a metal, but may be made of another material such as a synthetic resin.
Vortex generating members 5a and 6a are formed at the rear ends of the diaphragms 5 and 6 by bending the ends of the diaphragms 5 and 6 respectively.
【００２３】渦発生部材５ａ，６ａは、本実施例では、
振動板５，６の主面とある角度をなす板状部材として構
成されている。振動板５，６の長さ方向中央において
は、第１，第２の圧電素子８，９がそれぞれ貼り合わさ
れている。従って、上記渦発生部材５ａ，６ａは圧電素
子８，９を挟んで連結部７すなわち振動板５，６の前端
とは反対側に配置されている。In this embodiment, the vortex generating members 5a and 6a are
Each of the diaphragms 5 and 6 is configured as a plate-like member that forms an angle with the main surface. The first and second piezoelectric elements 8 and 9 are bonded to each other at the center in the length direction of the vibration plates 5 and 6. Therefore, the vortex generating members 5a and 6a are disposed on the opposite side of the connecting portions 7, that is, the front ends of the vibration plates 5 and 6, with the piezoelectric elements 8 and 9 therebetween.
【００２４】圧電素子８，９は、振動板５，６が屈曲振
動した場合、その振動エネルギーを受けて電力を取り出
すことを可能とするために設けられている。従って、圧
電素子８，９としては、振動板５，６の振動を受けて歪
み、圧電効果により、与えられた振動エネルギーを電気
エネルギーに変換し得る適宜の圧電素子を用いることが
できる。The piezoelectric elements 8 and 9 are provided so that when the diaphragms 5 and 6 bend and vibrate, electric power can be taken out by receiving the vibration energy. Therefore, as the piezoelectric elements 8 and 9, appropriate piezoelectric elements capable of converting the applied vibration energy into electric energy by the piezoelectric effect due to distortion caused by the vibration of the vibration plates 5 and 6 can be used.
【００２５】なお、特に図示はしないが、圧電素子８，
９の外表面には、それぞれ、電力を取り出すための一方
の電極が形成されており、圧電素子８，９の他面には、
他方の電極が形成されている。他方の電極については、
振動板５，６を金属で構成した場合、振動板５，６を電
極と兼ねさせることにより、省略してもよい。Although not shown, the piezoelectric elements 8 and
One electrode for extracting electric power is formed on the outer surface of each of the piezoelectric elements 9 and 9, and the other surface of each of the piezoelectric elements 8 and 9 is
The other electrode is formed. For the other electrode,
When the diaphragms 5 and 6 are made of metal, the diaphragms 5 and 6 may be omitted by using them as electrodes.
【００２６】圧電素子８，９を構成する圧電体について
は、特に限定されず、圧電セラミックスや圧電単結晶な
どを用いた適宜の圧電体を用いることができる。本実施
例の圧電型風力発電機１は、風力により電力を発生させ
得るだけでなく、風の方向を示す風向計としても用いら
れるものである。次に、この圧電型風力発電機の作用効
果を動作と共に説明することとする。The piezoelectric elements constituting the piezoelectric elements 8 and 9 are not particularly limited, and an appropriate piezoelectric element using piezoelectric ceramics, piezoelectric single crystal, or the like can be used. The piezoelectric wind power generator 1 according to the present embodiment can be used not only to generate power by wind power but also as a wind vane indicating the direction of wind. Next, the operation and effect of the piezoelectric wind power generator will be described together with the operation.
【００２７】圧電型風力発電機１は、上記のように圧電
素子８，９を用いるものであるため、小型に構成するこ
とができる。従って、軸受２は、家屋の屋根等に簡単に
取り付けることができる。Since the piezoelectric wind power generator 1 uses the piezoelectric elements 8 and 9 as described above, it can be made compact. Therefore, the bearing 2 can be easily attached to the roof of a house or the like.
【００２８】いま、風がある方向に吹いている場合、振
動板５，６のいずれかが風により押され、回転軸３が回
転される。第１，第２の振動板５，６では、先端側にお
ける間隔よりも、後端側において両者の間隔が広げられ
ているので、円錐状先端部４ａは風上方向に向かうこと
になる。すなわち、円錐状先端部４ａ側から連結部７側
に風が流れてきた場合、空気の流れは、連結部７より後
方では振動板５，６の外表面に沿って分岐されることに
なる。そのため、ロッド４の長さ方向に流れてきた空気
流により、振動板５，６が、それぞれ、内面側に押され
ることになる。その結果、振動板５，６の外面側から内
面側に向かう力を受けることになるため、風の流れに対
してロッド４の長さ方向が一致している辺りで振動板
５，６に加わる上記力が拮抗することになる。よって、
円錐状先端部４ａは、常に風向き方向に向かうことにな
る。When the wind is blowing in a certain direction, one of the diaphragms 5 and 6 is pushed by the wind, and the rotating shaft 3 is rotated. In the first and second diaphragms 5 and 6, since the interval between them is wider on the rear end side than on the front end side, the conical tip portion 4a is directed to the windward direction. In other words, when the wind flows from the conical tip 4 a to the connecting portion 7, the air flow is branched along the outer surfaces of the diaphragms 5 and 6 behind the connecting portion 7. Therefore, the vibrating plates 5 and 6 are pushed toward the inner surfaces by the airflow flowing in the length direction of the rod 4. As a result, a force from the outer surface side to the inner surface side of the diaphragms 5 and 6 is received, so that the force is applied to the diaphragms 5 and 6 around the position where the length directions of the rods 4 coincide with the flow of wind. The above forces will antagonize. Therefore,
The conical tip 4a always faces in the wind direction.
【００２９】従って、圧電型風力発電機１は、従来の風
向計と同様に風向きを示す風向計として機能する。しか
も、振動板５，６の外表面に沿って振動板５，６の長さ
方向に沿って流れてきた空気流は、渦発生部材５ａによ
りその方向を変化される。この場合、渦発生部材５ａ，
６ａは、折り曲げにより形成された内面が、振動板５，
６の主面と交差する角度をなすように形成されているの
で、流れてきた空気流が、渦発生部材５ａ，６ａの折り
曲げにより形成された内面に沿って方向を変化され、振
動板５，６の外側に渦流を発生させる。Therefore, the piezoelectric wind power generator 1 functions as a wind vane indicating the wind direction, similarly to the conventional wind vane. Moreover, the direction of the airflow flowing along the outer surfaces of the diaphragms 5 and 6 along the length direction of the diaphragms 5 and 6 is changed by the vortex generating member 5a. In this case, the vortex generating members 5a,
6a, the inner surface formed by bending is the diaphragm 5,
6, the direction of the flowing air flow is changed along the inner surface formed by bending of the vortex generating members 5a, 6a, and the diaphragm 5, A vortex is generated outside of the nozzle 6.
【００３０】その結果、振動板５，６の後端側におい
て、振動板５，６の外側に渦流が発生するため、並びに
振動板５，６の前端側は連結部７により固定されている
ため、振動板５，６は、連結部７側を固定端とし、渦発
生部材５ａ，６ａ側を自由端として屈曲振動で振動する
ことになる。この場合、振動板５，６が連結部７で連結
されているので、第１，第２の振動板５，６及び連結部
７で構成される構造体は、音叉型振動で振動する。As a result, a vortex is generated outside the diaphragms 5 and 6 at the rear end side of the diaphragms 5 and 6, and the front end side of the diaphragms 5 and 6 is fixed by the connecting portion 7. The vibrating plates 5 and 6 vibrate by bending vibration with the connecting portion 7 side as a fixed end and the vortex generating members 5a and 6a side as free ends. In this case, since the diaphragms 5 and 6 are connected by the connecting portion 7, the structure including the first and second diaphragms 5 and 6 and the connecting portion 7 vibrates by a tuning fork type vibration.
【００３１】従って、圧電素子８，９が該振動により歪
みを受けて、交流電圧を発生する。よって、圧電素子
８，９から電力を取り出すことができる。本実施例の圧
電型風力発電機では、上記第１，第２の振動板５，６
は、従来の風見鶏型の風向計と同様に、後端側において
両者の間隔が広げられているので、常に円錐状先端部４
ａが風向き方向を向こうとし、振動板５，６が最大風圧
を受けるように構成されている。加えて、渦発生部材５
ａ，６ａが形成されているので、上記渦流が効果的に発
生され、それによって小型であるにも係わらず比較的大
きな電力を取り出すことができる。すなわち、変換効率
に優れた発電機を提供することができる。Therefore, the piezoelectric elements 8 and 9 are distorted by the vibration and generate an AC voltage. Therefore, electric power can be extracted from the piezoelectric elements 8 and 9. In the piezoelectric wind power generator according to the present embodiment, the first and second diaphragms 5 and 6 are used.
As with the conventional weather vane type wind vane, the distance between the two is widened on the rear end side, so that the conical tip 4
a is directed in the wind direction, and the diaphragms 5 and 6 are configured to receive the maximum wind pressure. In addition, the vortex generating member 5
Due to the formation of the a and the a, the eddy current is effectively generated, so that a relatively large power can be taken out despite its small size. That is, a generator having excellent conversion efficiency can be provided.
【００３２】特に、本実施例の圧電型風力発電機では、
上記第１，第２の振動板５，６が、連結部７で連結され
ているので、振動板５，６が屈曲モードで振動するが、
振動板５，６を連結部７で構成した構造体全体が、音叉
型屈曲振動を引き起し、その共振周波数において最も大
きな交流電圧を得ることができる。In particular, in the piezoelectric wind power generator of this embodiment,
Since the first and second diaphragms 5 and 6 are connected by the connecting portion 7, the diaphragms 5 and 6 vibrate in a bending mode.
The entire structure in which the vibration plates 5 and 6 are constituted by the connecting portions 7 causes tuning fork-type bending vibration, and can obtain the largest AC voltage at the resonance frequency.
【００３３】図２は、本発明の第２の実施例に係る圧電
型風力発電機を説明するための部分切欠斜視図である。
圧電型風力発電機１１では、ロッド４に、第１，第２の
振動板５，６が連結部７を介して連結されている。第
１，第２の振動板５，６には、第１の実施例と同様に、
圧電素子８，９がそれぞれ貼り合わされており、かつ第
１，第２の振動板５，６の後端には、第１の振動板５，
６を折り曲げることにより渦発生部材５ａ，６ａが形成
されている。FIG. 2 is a partially cutaway perspective view illustrating a piezoelectric wind power generator according to a second embodiment of the present invention.
In the piezoelectric wind power generator 11, the first and second diaphragms 5 and 6 are connected to the rod 4 via the connecting portion 7. Like the first embodiment, the first and second diaphragms 5 and 6 have
The piezoelectric elements 8 and 9 are bonded to each other, and the first diaphragm 5 and the second diaphragm 5
The vortex generating members 5a, 6a are formed by bending the vortex generator 6.
【００３４】また図示はしないが、ロッド４の先端に、
第１の実施例の場合と同様に円錐状先端部４ａ（図１参
照）が形成されており、かつロッド４には、第１の実施
例と同様に、回転軸３及び軸受２が連結されている。Although not shown, the tip of the rod 4
A conical tip 4a (see FIG. 1) is formed as in the case of the first embodiment, and the rotating shaft 3 and the bearing 2 are connected to the rod 4 as in the first embodiment. ing.
【００３５】本実施例の特徴は、第１，第２の振動板
５，６だけでなく、上下方向に対向するように、第３，
第４の振動板１２，１３が連結部７に連結されているこ
とにある。すなわち、振動板１２，１３の前端は連結部
７に連結されている。また、振動板１２，１３の後端側
は、互いの間隔が、連結部７に連結されている側の端部
の間隔よりも大きくされている。The feature of this embodiment is that not only the first and second diaphragms 5 and 6 but also the third and fourth diaphragms 5 and 6 are vertically opposed.
The fourth diaphragms 12 and 13 are connected to the connecting portion 7. That is, the front ends of the diaphragms 12 and 13 are connected to the connecting portion 7. In addition, the rear ends of the diaphragms 12 and 13 are spaced apart from each other at a distance greater than the distance between the ends connected to the connecting portion 7.
【００３６】さらに、振動板１２，１３の後端を折り曲
げることにより、渦発生部材１２ａ，１３ａが形成され
ている。渦発生部材１２ａ，１３ａは、振動板１２，１
３の主面とある角度をなすように、振動板１２，１３を
外側に折り曲げることにより形成されている。従って、
渦発生部材１２ａ，１３ａの折り曲げにより形成された
内面は、振動板１２，１３の主面とある角度をなし、振
動板１２，１３の主面に沿って流れてきた空気流の方向
を変換し、渦流を発生させるように構成されている。Further, the vortex generating members 12a and 13a are formed by bending the rear ends of the diaphragms 12 and 13. The vortex generating members 12a and 13a are
The diaphragms 12 and 13 are formed by bending the diaphragms 12 and 13 outward so as to form an angle with the principal surface of the diaphragm 3. Therefore,
The inner surface formed by bending the vortex generating members 12a and 13a forms an angle with the main surfaces of the diaphragms 12 and 13, and changes the direction of the airflow flowing along the main surfaces of the diaphragms 12 and 13. , To generate a vortex.
【００３７】また、第３，第４の振動板１２，１３の外
表面には、第３，第４の圧電素子１４，１５が貼り合わ
されている。圧電素子１４，１５は、第１の実施例で用
いた圧電素子８，９と同様に構成されている。The third and fourth piezoelectric elements 14 and 15 are bonded to the outer surfaces of the third and fourth diaphragms 12 and 13, respectively. The piezoelectric elements 14 and 15 have the same configuration as the piezoelectric elements 8 and 9 used in the first embodiment.
【００３８】すなわち、第２の実施例の圧電型風力発電
機１１の特徴は、第１の実施例の圧電型風力発電機１に
おいて、さらに第３，第４の振動板１２，１３、渦発生
部材１２ａ，１３ａ及び圧電素子１４，１５を付加した
構造に相当する。もっとも、第３，第４の振動板１２，
１３の共振周波数は、第１，第２の振動板５，６の共振
周波数と異ならされている。従って、風を受けて振動し
た場合、第３の振動板１２、連結部７及び第４の振動板
１３で構成される音叉型構造体が音叉型振動で振動し、
この音叉型振動の共振周波数は、第１，第２の振動板
５，６及び連結部７で構成される音叉型振動の共振周波
数と異ならされている。That is, the feature of the piezoelectric wind turbine generator 11 of the second embodiment is that the piezoelectric wind turbine generator 1 of the first embodiment further has third and fourth diaphragms 12, 13 and vortex generation. This corresponds to a structure in which members 12a and 13a and piezoelectric elements 14 and 15 are added. However, the third and fourth diaphragms 12,
13 is different from the resonance frequencies of the first and second diaphragms 5 and 6. Therefore, when vibrated by the wind, the tuning fork type structure constituted by the third diaphragm 12, the connecting portion 7, and the fourth diaphragm 13 vibrates in a tuning fork type vibration,
The resonance frequency of the tuning fork type vibration is different from the resonance frequency of the tuning fork type vibration constituted by the first and second diaphragms 5 and 6 and the connecting portion 7.
【００３９】本実施例の圧電型風力発電機１１では、第
１，第２の振動板５，６が上記のように構成されている
ので、第１の実施例と同様に、風向計としても機能す
る。加えて、第１，第２の振動板５，６及び連結部７で
構成される部分の音叉型振動により、第１，第２の圧電
素子８，９から交流電圧を取り出すことができる。In the piezoelectric wind power generator 11 according to the present embodiment, the first and second diaphragms 5 and 6 are configured as described above. Function. In addition, an AC voltage can be extracted from the first and second piezoelectric elements 8 and 9 by the tuning fork-type vibration of the portion constituted by the first and second diaphragms 5 and 6 and the connecting portion 7.
【００４０】さらに、第３，第４の振動板１２，１３側
においても、第３，第４の振動板１２，１３及び連結部
７で構成されている構造体の音叉型振動に伴うエネルギ
ーが圧電素子１４，１５から交流電圧として取り出され
る。Further, also on the side of the third and fourth diaphragms 12 and 13, the energy accompanying the tuning fork type vibration of the structure constituted by the third and fourth diaphragms 12 and 13 and the connecting portion 7 is generated. It is extracted from the piezoelectric elements 14 and 15 as an AC voltage.
【００４１】従って、第１の実施例の圧電型風力発電機
１に比べて、より大きな電力を取り出すことができる。
特に、第３，第４の振動板１２，１３もまた、連結部７
と共に音叉型振動体を構成しているので、第１，第２の
振動板５，６と同様に、最大風圧を効果的に受けること
ができ、第３，第４の圧電素子１４，１５においても大
きな電力を取り出すことができる。Therefore, it is possible to take out more electric power as compared with the piezoelectric wind power generator 1 of the first embodiment.
In particular, the third and fourth diaphragms 12 and 13 are also connected to the connecting portion 7.
Together with the tuning fork type vibrating body, it is possible to effectively receive the maximum wind pressure similarly to the first and second diaphragms 5 and 6, and the third and fourth piezoelectric elements 14 and 15 Can also extract a large amount of power.
【００４２】のみならず、本実施例では、第１，第２の
振動板５，６及び連結部７で構成される音叉型振動体の
共振周波数と、第３，第４の振動板１２，１３及び連結
部７で構成される音叉型振動体の共振周波数が異なるの
で、風速が変化した場合や、風向きが若干変化した場合
でも、より効果的に電力を取り出すことができる。従っ
て、エネルギー変換効率をより一層高めることができ
る。In this embodiment, not only the resonance frequency of the tuning fork type vibrator constituted by the first and second diaphragms 5 and 6 and the connecting portion 7 but also the third and fourth diaphragms 12 and Since the resonance frequency of the tuning fork type vibrating body constituted by 13 and the connecting portion 7 is different, power can be more effectively taken out even when the wind speed changes or the wind direction changes slightly. Therefore, the energy conversion efficiency can be further improved.
【００４３】図３は、本発明の第３の実施例に係る圧電
型風力発電機を説明するための部分切欠斜視図である。
圧電型風力発電機２１では、ロッド４に、一枚の振動板
２２が固定されている。ロッド４の前方は図示を省略し
てあるが、第１の実施例と同様に、円錐状先端部４ａ、
回転軸３及び軸受２が配置されている。FIG. 3 is a partially cutaway perspective view for explaining a piezoelectric wind power generator according to a third embodiment of the present invention.
In the piezoelectric wind turbine generator 21, one vibration plate 22 is fixed to the rod 4. The front of the rod 4 is not shown, but as in the first embodiment, the conical tip 4a,
The rotating shaft 3 and the bearing 2 are arranged.
【００４４】振動板２２の後端には、振動板２２を折り
曲げることにより、渦発生部材２２ａ，２２ｂ，２２ｃ
が形成されている。振動板２２の両主面中央には、圧電
素子２３，２４が貼り合わされている。圧電素子２３，
２４は、第１の実施例で用いた圧電素子８，９と同様に
構成することができる。At the rear end of the diaphragm 22, the diaphragm 22 is bent so that vortex generating members 22 a, 22 b, 22 c
Are formed. Piezoelectric elements 23 and 24 are bonded to the center of both main surfaces of the vibration plate 22. Piezoelectric element 23,
Reference numeral 24 can be configured similarly to the piezoelectric elements 8 and 9 used in the first embodiment.
【００４５】本実施例では、渦発生部材２２ａ，２２ｃ
が折り曲げられる方向と、渦発生部材２２ｂが折り曲げ
られている方向とが逆とされている。すなわち、一枚の
振動板２２のみを用いるため、振動板２２の両側に分け
て渦発生部材２２ａ，２２ｃ及び渦発生部材２２ｂを形
成することにより、振動板２２の後端近傍両側において
渦流が発生されるように構成されている。In this embodiment, the vortex generating members 22a, 22c
Is reversed with respect to the direction in which the vortex generating member 22b is bent. That is, since only one diaphragm 22 is used, the vortex generating members 22a, 22c and 22b are formed on both sides of the diaphragm 22 so that vortices are generated on both sides near the rear end of the diaphragm 22. It is configured to be.
【００４６】従って、振動板２２の両面において渦流が
発生されるので、一枚の振動板２２を用いているが、ロ
ッド４の先端側から風を受けた場合、上記両面に発生さ
れる渦流により、振動板２２の側方への移動が規制さ
れ、ロッド４の先端が常に風向きを向くように位置され
ることになる。Therefore, since a vortex is generated on both sides of the diaphragm 22, a single diaphragm 22 is used. However, when wind is received from the tip side of the rod 4, the vortex generated on the both sides causes the vortex. The movement of the diaphragm 22 to the side is restricted, and the tip of the rod 4 is positioned so as to always face the wind.
【００４７】すなわち、渦発生部材２２ａ，２２ｃと渦
発生部材２２ｂとは、渦流を発生して振動板２２を屈曲
振動させるだけでなく、振動板２２の主面の前後方向を
風の流れる方向と一致する方向に規制する作用も果た
す。That is, the vortex generating members 22a and 22c and the vortex generating member 22b not only generate a vortex to cause the diaphragm 22 to bend and vibrate, but also to determine the direction in which the wind flows in the front-back direction of the main surface of the diaphragm 22. It also acts to regulate in the same direction.
【００４８】従って、本実施例の圧電型風力発電機２１
も、風向きを表示する機能も果たす。加えて、風がロッ
ド４の長さ方向に流れてきた場合には、振動板２２の両
面において、渦発生部材２２ａ，２２ｂ，２２ｃにより
振動板２２の後端近傍に渦流が発生し、それに伴って振
動板２２が長さ方向に沿って屈曲振動する。そのため、
振動板２２の両面に貼り合わされた圧電素子２３，２４
から交流電圧を取り出すことができる。Accordingly, the piezoelectric wind power generator 21 of this embodiment is
It also performs the function of displaying the wind direction. In addition, when the wind flows in the length direction of the rod 4, a vortex is generated near the rear end of the diaphragm 22 on both surfaces of the diaphragm 22 by the vortex generating members 22 a, 22 b, and 22 c. Thus, the vibration plate 22 bends and vibrates along the length direction. for that reason,
Piezoelectric elements 23 and 24 bonded to both surfaces of diaphragm 22
AC voltage can be extracted from the battery.
【００４９】従って、第３の実施例に係る圧電型風力発
電機２１においても、風力を利用し、圧電素子２３，２
４の電気機械変換効果を利用することにより、電力を効
率良く取り出すことができる。Therefore, also in the piezoelectric wind power generator 21 according to the third embodiment, the wind power is utilized and the piezoelectric elements 23 and 2 are used.
By utilizing the electromechanical conversion effect of No. 4, power can be efficiently extracted.
【００５０】なお、第１〜第３の実施例では、渦発生部
材５ａ，６ａ，１２ａ，１３ａ，２２ａ〜２２ｃは、振
動板の後端を折り曲げることにより形成したが、渦発生
部材としては、振動板の主面とある角度をなし、渦流を
振動板の主面外側に発生させ得る限り、特に限定される
ものではない。すなわち、振動板の主面とある角度をな
して渦流を発生させる面を有する突状、リブ、突起など
の適宜の形状の渦発生部材を構成することができる。ま
た、渦発生部材は、振動板と別部材で構成されていても
よく、その場合渦発生部材を振動板に固定する方法につ
いても、接着やねじ止めなど適宜の方法で行い得る。In the first to third embodiments, the vortex generating members 5a, 6a, 12a, 13a, 22a to 22c are formed by bending the rear end of the diaphragm. There is no particular limitation as long as it forms an angle with the main surface of the diaphragm and can generate a vortex outside the main surface of the diaphragm. That is, it is possible to form a vortex generating member having an appropriate shape such as a protrusion, a rib, or a projection having a surface that generates a vortex at an angle with the main surface of the diaphragm. Further, the vortex generating member may be formed of a member different from the diaphragm. In this case, the method of fixing the vortex generating member to the diaphragm may be performed by an appropriate method such as bonding or screwing.
【００５１】さらに、渦発生部材は、振動板の後端に形
成されている必要は必ずしもなく、振動板を屈曲振動さ
せ得る渦流を発生させ得る限り、任意の位置に形成する
ことができる。もっとも、第１〜第３の実施例のよう
に、風上側となる振動板端部とは圧電素子を挟んで反対
側に渦発生部材を配置すれば渦発生部材により振動板を
効果的に振動させることができると共に、風向計として
の作用を果たさせ得る。Further, the vortex generating member does not necessarily need to be formed at the rear end of the diaphragm, and can be formed at any position as long as a vortex that can cause the diaphragm to bend and vibrate can be generated. However, as in the first to third embodiments, if the vortex generating member is disposed on the side opposite to the end of the diaphragm on the windward side with the piezoelectric element interposed therebetween, the vortex generating member effectively vibrates the diaphragm. And can act as a wind vane.
【００５２】また、第１の実施例では、第１，第２の振
動板５，６を同じ共振周波数を有するように構成した
が、本発明においては、複数の振動板を用い、該複数の
振動板として共振周波数が異なる振動板を適宜組み合わ
せて圧電型風力発電機を構成してもよい。In the first embodiment, the first and second diaphragms 5 and 6 are configured to have the same resonance frequency. However, in the present invention, a plurality of diaphragms are used and the plurality of diaphragms are used. A piezoelectric wind power generator may be configured by appropriately combining diaphragms having different resonance frequencies as the diaphragm.
【００５３】[0053]
【発明の効果】請求項１に記載の発明に係る圧電型風力
発電機によれば、振動板に固定された渦発生部材によ
り、風を受けた際に空気の渦流が発生されて振動板が振
動される。その結果、振動板の振動を受けて圧電素子に
より電力を取り出すことができる。従って、振動板、渦
発生部材及び圧電素子からなる比較的簡単な構造で、風
力から電力を取り出すことができる。加えて、比較的簡
単な構造を有するため、家屋の屋根等に設置し得る小型
かつ安価な発電機を提供することが可能となる。According to the piezoelectric wind power generator according to the first aspect of the present invention, the vortex generating member fixed to the diaphragm generates a vortex of air when receiving the wind, thereby forming the diaphragm. Vibrated. As a result, power can be taken out by the piezoelectric element in response to the vibration of the diaphragm. Therefore, electric power can be extracted from wind power with a relatively simple structure including the vibration plate, the vortex generating member, and the piezoelectric element. In addition, since it has a relatively simple structure, it is possible to provide a small and inexpensive generator that can be installed on the roof of a house or the like.
【００５４】さらに、比較的簡単な構造を有し、小型に
構成し得るため、各家庭等に圧電型風力発電機を設置す
ることにより、電力を消費するその場で発電を行うこと
ができ、送電に伴うエネルギーロスも生じ難い。加え
て、風力を利用するものであるため、環境汚染が生じ難
く、かつエネルギー資源の節約にも寄与する。Furthermore, since it has a relatively simple structure and can be made compact, by installing a piezoelectric wind power generator in each home or the like, power can be generated on the spot where power is consumed. Energy loss associated with power transmission is unlikely to occur. In addition, since wind power is used, environmental pollution hardly occurs and energy resources are saved.
【００５５】請求項２に記載の発明では、圧電型風力発
電機に、回転自在に支持されている回転軸が備えられて
おり、渦発生部材と圧電素子を挟んで反対側の振動板端
部が風上方向を向くように渦発生部材が構成されている
ので、振動板が大きな風圧を確実に受けることができ、
エネルギー変換効率を高めることができると共に、風向
計としての機能をも風力発電機に与えることができる。According to the second aspect of the present invention, the piezoelectric wind turbine is provided with a rotating shaft rotatably supported, and the end of the diaphragm opposite to the vortex generating member and the piezoelectric element. The vortex generating member is configured so that it faces upwind, so that the diaphragm can reliably receive a large wind pressure,
The energy conversion efficiency can be improved, and the function as a wind vane can be given to the wind power generator.
【００５６】請求項３に記載の発明では、共振周波数が
異なる振動板を用いた複数の圧電型風力発電機を備える
ため、風速の変化や風向きの変化に対応することがで
き、より一層エネルギー変換効率を高めることができ
る。According to the third aspect of the present invention, since a plurality of piezoelectric wind power generators using diaphragms having different resonance frequencies are provided, it is possible to cope with a change in wind speed and a change in wind direction, and to further convert energy. Efficiency can be increased.
【００５７】請求項４に記載の発明に係る圧電型風力発
電機では、第１，第２の振動板が連結部を介して連結さ
れて音叉型振動を発生するように構成されており、第
１，第２の振動板の連結されている側とは反対側の端部
における間隔が広げられているので、最大風圧を確実に
受けることができ、それによって、より一層エネルギー
変換効率を高めることができ、大きな電力を取り出すこ
とができる。According to a fourth aspect of the present invention, there is provided a piezoelectric wind power generator, wherein the first and second diaphragms are connected via a connecting portion to generate a tuning fork type vibration. 1. Since the interval at the end opposite to the side to which the second diaphragm is connected is widened, the maximum wind pressure can be reliably received, thereby further increasing the energy conversion efficiency. And a large amount of power can be taken out.
【００５８】請求項５に記載の発明では、第１，第２の
振動板に加えて、第３，第４の振動板を用いた圧電型風
力発電機が備えられているので、風向きや風速の変化に
より確実に対応することができ、常に最大風圧を効率良
く受けることができる。従って、より一層エネルギー変
換効率に優れた風力発電機を提供することができる。According to the fifth aspect of the present invention, since the piezoelectric wind power generator using the third and fourth diaphragms is provided in addition to the first and second diaphragms, the wind direction and the wind speed are increased. , And the maximum wind pressure can always be efficiently received. Therefore, it is possible to provide a wind power generator having even more excellent energy conversion efficiency.
【００５９】請求項６に記載の発明では、請求項４，５
に記載の発明に係る圧電型風力発電機において、回転自
在に支持された回転軸がさらに備えられており、連結部
側が風上方向を向くように構成されているので、それに
よって最大風圧をより効率良く受けることができ、エネ
ルギー変換効率を高めることができる。According to the sixth aspect of the present invention, the fourth and fifth aspects of the invention are described below.
In the piezoelectric wind power generator according to the invention described in (1), a rotatable shaft rotatably supported is further provided, and the connecting portion side is configured to face the windward direction, thereby increasing the maximum wind pressure. It is possible to receive energy efficiently and to increase energy conversion efficiency.
【００６０】請求項７に記載の発明では、渦発生部材が
圧電素子を挟んで振動板が連結されている部分とは反対
側において振動板に固定されているので、渦発生部材に
より発生された渦流により振動板が効率良く振動し、そ
れによってエネルギー変換効率を高めることができる。According to the seventh aspect of the present invention, since the vortex generating member is fixed to the diaphragm on the side opposite to the portion where the diaphragm is connected across the piezoelectric element, the vortex generating member generates the vortex. The vibrating plate efficiently vibrates due to the eddy current, thereby increasing the energy conversion efficiency.
【００６１】請求項８に記載の発明では、渦発生部材
が、固定されている振動板の主面に沿って流れてきた風
の方向を変えるように、主面に対して所定の角度をなす
面を有する部材により構成されているので、振動板を振
動させる渦流が効果的に発生される。According to the eighth aspect of the present invention, the vortex generating member makes a predetermined angle with respect to the main surface so as to change the direction of the wind flowing along the main surface of the fixed diaphragm. Since it is constituted by a member having a surface, a vortex that vibrates the diaphragm is effectively generated.
【００６２】請求項９に記載の発明では、渦発生部材が
振動板と一体に構成されているので、渦発生部材及び振
動板を機械加工や成形などの方法により容易に得ること
ができると共に、部品点数の低減を果たし得る。According to the ninth aspect of the present invention, since the vortex generating member is integrally formed with the diaphragm, the vortex generating member and the diaphragm can be easily obtained by a method such as machining or molding. The number of parts can be reduced.
【００６３】請求項１０に記載の発明では、渦発生部材
が、振動板の端部を折り曲げることにより構成されてい
るので、例えば金属などからなる振動板を用意した後、
折り曲げ加工により、容易に渦発生部材を形成すること
ができる。According to the tenth aspect of the present invention, since the vortex generating member is formed by bending the end of the diaphragm, for example, after preparing a diaphragm made of metal or the like,
The vortex generating member can be easily formed by bending.
【図１】本発明の第１の実施例に係る圧電型風力発電機
を説明するための斜視図。FIG. 1 is a perspective view illustrating a piezoelectric wind power generator according to a first embodiment of the present invention.
【図２】本発明の第２の実施例に係る圧電型風力発電機
の要部を説明するための部分切欠斜視図。FIG. 2 is a partially cutaway perspective view illustrating a main part of a piezoelectric wind power generator according to a second embodiment of the present invention.
【図３】本発明の第３の実施例に係る圧電型風力発電機
を説明するための部分切欠斜視図。FIG. 3 is a partially cutaway perspective view illustrating a piezoelectric wind power generator according to a third embodiment of the present invention.
【図４】従来の風力発電装置を説明するための斜視図。FIG. 4 is a perspective view illustrating a conventional wind turbine generator.
１…圧電型風力発電機 ５，６…第１，第２の振動板 ５ａ，６ａ…渦発生部材 ７…連結部分 ８，９…第１，第２の圧電素子 １１…圧電型風力発電機 １２，１３…第３，第４の振動板 １２ａ，１３ａ…第３，第４の渦発生部材 １４，１５…第３，第４の圧電素子 ２１…圧電型風力発電機 ２２…振動板 ２２ａ〜２２ｃ…渦発生部材 ２３，２４…圧電素子 DESCRIPTION OF SYMBOLS 1 ... Piezoelectric wind generator 5, 6 ... 1st, 2nd diaphragm 5a, 6a ... Vortex generating member 7 ... Connection part 8, 9 ... 1st, 2nd piezoelectric element 11 ... Piezoelectric wind generator 12 , 13 ... third and fourth diaphragms 12a, 13a ... third and fourth vortex generating members 14, 15 ... third and fourth piezoelectric elements 21 ... piezoelectric wind power generator 22 ... diaphragms 22a to 22c ... Vortex generating members 23, 24 ... Piezoelectric elements
Claims (10)
振動させるような空気の渦流を発生させるための渦発生
部材と、 前記振動板に固定されており、かつ振動板の振動を受け
て電力を取り出すことを可能とする圧電素子とを備える
ことを特徴とする、圧電型風力発電機。1. A diaphragm, fixed to the diaphragm, and a vortex generating member for generating a vortex of air that vibrates the diaphragm when receiving a wind, the vortex generating member being fixed to the diaphragm. A piezoelectric element capable of extracting electric power by receiving vibration of the diaphragm.
り、かつ回転自在に支持されている回転軸をさらに備
え、前記渦発生部材と圧電素子を挟んで反対側の振動板
端部が風上方向を向くように渦発生部材が構成されてい
る、請求項１に記載の圧電型風力発電機。2. The apparatus according to claim 1, further comprising a rotating shaft connected to said piezoelectric wind generator and rotatably supported. The piezoelectric wind power generator according to claim 1, wherein the vortex generating member is configured to face upward.
の請求項１に記載の圧電型風力発電機を備えることを特
徴とする圧電型風力発電機。3. A piezoelectric wind power generator comprising a plurality of piezoelectric wind power generators according to claim 1, wherein a plurality of vibration plates having different resonance frequencies are used.
における間隔が連結されている側の間隔よりも広くされ
ている第１，第２の振動板と、 前記第１，第２の振動板にそれぞれ固定されており、風
を受けた際に振動板を振動させるような空気の渦流を発
生させるための第１，第２の渦発生部材と、 前記第１，第２の振動板にそれぞれ固定されており、振
動板の振動を受けて電力を取り出すことを可能とする第
１，第２の圧電素子とを備え、 風を受けた際に、一端側で連結された第１，第２の振動
板が音叉型振動を発生するように構成されていることを
特徴とする、圧電型風力発電機。4. A first and second diaphragm connected at one end and having a wider interval at the other end than the connected side, and the first and second vibrations. A first and a second vortex generating member fixed to the plate, for generating a vortex of air that vibrates the diaphragm when receiving a wind; The first and second piezoelectric elements are fixed to each other, and are capable of extracting electric power by receiving vibration of the diaphragm. The first and second piezoelectric elements are connected at one end when wind is received. 2. The piezoelectric wind power generator, wherein the second diaphragm is configured to generate a tuning fork type vibration.
端側が連結されており、連結部分側とは反対側の端部の
間隔が連結部分側の端部の間隔よりも広くされている第
３，第４の振動板と、 前記第３，第４の振動板にそれぞれ固定されており、風
を受けた際に振動板を振動させるような空気の渦流を発
生させる第３，第４の渦発生部材と、 前記第３，第４の振動板にそれぞれ固定されており、振
動板の振動を受けて電力を取り出すことを可能とする第
３，第４の圧電素子とをさらに備え、 前記第３，第４の振動板により音叉型振動が発生するよ
うに構成されておりかつ第１，第２の振動板により発生
される音叉型振動と、第３，第４の振動板により発生さ
れる音叉型振動の周波数が異ならされている、請求項４
に記載の圧電型風力発電機。5. A connecting portion of the first and second diaphragms is connected at one end to a connecting portion, and a distance between ends of the first and second diaphragms opposite to the connecting portion is wider than a distance between ends of the connecting portion. A third and a fourth diaphragm that are fixed to the third and the fourth diaphragm, respectively, and generate a vortex of air that vibrates the diaphragm when receiving a wind. A fourth vortex generating member, and third and fourth piezoelectric elements fixed to the third and fourth diaphragms, respectively, and capable of receiving electric power by receiving vibrations of the diaphragms. And a tuning fork type vibration generated by the first and second diaphragms, wherein the third and fourth diaphragms are configured to generate a tuning fork type vibration. 5. The frequency of the tuning fork type vibration generated by the above is different.
4. The piezoelectric wind generator according to claim 1.
自在に支持された回転軸をさらに備え、前記連結部側が
風上方向を向くように構成されている、請求項４または
５に記載の圧電型風力発電機。6. The vehicle according to claim 4, further comprising a rotating shaft fixed to the connecting portion and rotatably supported, wherein the connecting portion is configured to face upwind. Piezoelectric wind generator.
電素子を挟んで振動板が連結されている部分とは反対側
に固定されている、請求項１〜６のいずれかに記載の圧
電型風力発電機。7. The piezoelectric device according to claim 1, wherein the vortex generating member of the diaphragm is fixed to a side opposite to a portion where the diaphragm is connected across the piezoelectric element. Type wind generator.
されている振動板の主面に沿って流れてきた風の方向を
変えるように、該主面に対して所定の角度をなす面を有
する部材である、請求項１〜７のいずれかに記載の圧電
型風力発電機。8. The vortex generating member makes a predetermined angle with respect to the main surface so as to change the direction of wind flowing along the main surface of the diaphragm to which the vortex generating member is fixed. The piezoelectric wind generator according to any one of claims 1 to 7, which is a member having a surface.
されている、請求項１〜８のいずれかに記載の圧電型風
力発電機。9. The piezoelectric wind power generator according to claim 1, wherein the vortex generating member is formed integrally with the diaphragm.
り曲げることにより構成されている、請求項９に記載の
圧電型風力発電機。10. The piezoelectric wind power generator according to claim 9, wherein the vortex generating member is configured by bending an end of a diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11367798A JP3951438B2 (en) | 1998-04-23 | 1998-04-23 | Piezoelectric wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11367798A JP3951438B2 (en) | 1998-04-23 | 1998-04-23 | Piezoelectric wind power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11303726A true JPH11303726A (en) | 1999-11-02 |
| JP3951438B2 JP3951438B2 (en) | 2007-08-01 |
Family
ID=14618377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11367798A Expired - Lifetime JP3951438B2 (en) | 1998-04-23 | 1998-04-23 | Piezoelectric wind power generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3951438B2 (en) |
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