JP2022063347A - Wind power generation system for movable body and movable body including the same - Google Patents

Wind power generation system for movable body and movable body including the same Download PDF

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JP2022063347A
JP2022063347A JP2022026080A JP2022026080A JP2022063347A JP 2022063347 A JP2022063347 A JP 2022063347A JP 2022026080 A JP2022026080 A JP 2022026080A JP 2022026080 A JP2022026080 A JP 2022026080A JP 2022063347 A JP2022063347 A JP 2022063347A
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power generation
impeller
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wind
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JP7320642B2 (en
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訓範 津田
Kuninori Tsuda
芳久 古藤
Yoshihisa Koto
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    • 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
    • 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
    • Y02E10/728—Onshore wind turbines

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Abstract

PROBLEM TO BE SOLVED: To provide a wind power generation system for a movable body which achieves high conversion efficiency from wind power to rotational energy and high durability.
SOLUTION: A wind power generation system includes: an air channel; an impeller disposed in the air channel and having a hub and blades; and a power generator which generates power by rotation of the impeller. The hub has a substantially conical part or a substantially head-cut conical part in which a diameter becomes larger from the front end part side to the rear end part side. Each of the blades is formed so as to make a predetermined angle obliquely relative to a generating line of the substantially conical part or the substantially head-cut conical part from an area near a front end part of the hub to an area near a rear end part of the hub.
SELECTED DRAWING: Figure 5
COPYRIGHT: (C)2022,JPO&INPIT

Description

本発明は、移動体用の風力発電システム、及びこれを備えた移動体。 The present invention is a wind power generation system for a mobile body, and a mobile body including the wind power generation system.

近年、電気をエネルギー源として走行する電気自動車が注目を浴びている。電気自動車は、走行中に排気ガスを排出しない等の利点を有する一方、ガソリン自動車よりも航続距離が短く、また、充電に数時間かかるといった問題がある。 In recent years, electric vehicles that run on electricity as an energy source have been attracting attention. While electric vehicles have advantages such as not emitting exhaust gas while traveling, they have problems that they have a shorter cruising range than gasoline vehicles and that it takes several hours to charge.

このような問題を解決するため、電気自動車に小型の風力発電装置を取り付け、走行中に受ける風力を利用して走行しながら充電をおこなうことが提案されている。このような電気自動車用の風力発電装置として、例えば、特許文献１では、円錐台のドラムの表面上に小さい羽根を複数並べて配置した羽根車を用いた風力発電装置が提案されている。また、例えば、特許文献２では、螺旋羽根車を用いた風力発電装置が提案されている。 In order to solve such a problem, it has been proposed to attach a small wind power generator to an electric vehicle and charge the electric vehicle while traveling by using the wind force received during traveling. As such a wind power generation device for an electric vehicle, for example, Patent Document 1 proposes a wind power generation device using an impeller in which a plurality of small blades are arranged side by side on the surface of a drum of a truncated cone. Further, for example, Patent Document 2 proposes a wind power generation device using a spiral impeller.

特開２０１０－１０１２７５号公報Japanese Unexamined Patent Publication No. 2010-101275 特開２０１７－１４９１６８号公報Japanese Unexamined Patent Publication No. 2017-149168

しかし、特許文献１に記載されている風力発電装置は、高速での走行中に発電することを目的としたものである。特許文献１の羽根車は、羽根が小さく、また、羽根が軸方向に沿って並んでいるため、風力から回転エネルギーへの変換効率が十分なものではなく、例えば、低速での走行中は、羽根車の回転数を十分なものとすることが難しく、結果として、十分な発電量を得られないという問題があった。 However, the wind power generation device described in Patent Document 1 is intended to generate power while traveling at a high speed. The impeller of Patent Document 1 has small blades and the blades are lined up along the axial direction, so that the conversion efficiency from wind power to rotational energy is not sufficient. There is a problem that it is difficult to make the rotation speed of the impeller sufficient, and as a result, a sufficient amount of power generation cannot be obtained.

また、特許文献２に記載されている風力発電装置は、螺旋羽根車を用いることで、風力から回転エネルギーへの変換効率を向上させているが、耐久性が十分なものではなかった。例えば、高速での走行中は、羽根車が気流から受ける力が非常に大きくなるため、羽根車が破損しやすいという問題があった。 Further, the wind power generation device described in Patent Document 2 uses a spiral impeller to improve the conversion efficiency from wind power to rotational energy, but the durability is not sufficient. For example, while traveling at high speed, the impeller receives a very large force from the air flow, so that there is a problem that the impeller is easily damaged.

本発明は、上記の問題に鑑みてなされたものである。すなわち、本発明の課題は、風力から回転エネルギーへの変換効率および耐久性が高い、移動体用の風力発電システムを提供することである。 The present invention has been made in view of the above problems. That is, an object of the present invention is to provide a wind power generation system for a mobile body, which has high conversion efficiency and durability from wind power to rotational energy.

本発明の要旨は、以下の通りである。 The gist of the present invention is as follows.

［１］風洞と、風洞内に配置され、ハブ及び複数の羽根を有する羽根車と、羽根車の回転によって発電する発電機とを備え、ハブが、前端部側から後端部側に向かうにつれ径が大きくなる略円錐部または略裁頭円錐部を有し、複数の羽根のそれぞれが、ハブの前端部近傍から後端部近傍にかけて、略円錐部または略裁頭円錐部の母線に対して斜めに所定の角度をなすように形成されている、移動体用の風力発電システム。 [1] A wind cone, an impeller arranged in the wind cave and having a hub and a plurality of blades, and a generator that generates electricity by rotating the impeller are provided, and as the hub moves from the front end side to the rear end side. It has a substantially conical portion or a roughly cut head conical portion with a large diameter, and each of the plurality of blades extends from the vicinity of the front end portion to the vicinity of the rear end portion of the hub with respect to the generatrix of the substantially conical portion or the substantially cut head conical portion. A wind power generation system for mobile objects that is formed diagonally at a predetermined angle.

［２］羽根が、略三角形状であり、略三角形状の斜辺に相当する部位と略円錐部または略裁頭円錐部の側面とが接するように形成されている、上記［１］に記載の移動体用の風力発電システム。 [2] The above-mentioned [1], wherein the blade has a substantially triangular shape and is formed so that a portion corresponding to a hypotenuse of the substantially triangular shape is in contact with a substantially conical portion or a side surface of a substantially conical portion. Wind power generation system for mobile bodies.

［３］羽根車の回転軸に垂直な任意の平面によって羽根車を切断した場合に、断面における羽根の長さが、略円錐部または略裁頭円錐部の底面の半径と、略円錐部または略裁頭円錐部の断面の半径との差と略等しい、上記［１］又は［２］に記載の移動体用の風力発電システム。 [3] When the impeller is cut by an arbitrary plane perpendicular to the rotation axis of the impeller, the length of the blade in the cross section is the radius of the bottom surface of the substantially conical portion or the substantially conical portion, and the substantially conical portion or the substantially conical portion. The wind power generation system for a moving body according to the above [1] or [2], which is substantially equal to the difference from the radius of the cross section of the substantially cut cone portion.

［４］所定の角度が、２５～４５度である、上記［１］～［３］のいずれかに記載の移動体用の風力発電システム。 [4] The wind power generation system for a mobile body according to any one of the above [1] to [3], wherein the predetermined angle is 25 to 45 degrees.

［５］任意の１の羽根に着目した場合、該１の羽根が、略円錐部または略裁頭円錐部の側面を１周することなく形成されている、上記［１］～［４］のいずれかに記載の移動体用の風力発電システム。 [5] When focusing on any one blade, the one blade is formed without going around the side surface of the substantially conical portion or the substantially cut conical portion, according to the above [1] to [4]. Wind power generation system for mobiles described in either.

［６］風洞が、風洞の前端部と後端部との間であって、羽根車の後端部近傍に対応する位置に、風洞の前端部から流入した風を風洞の外へ排気するための開口部を有する、上記［１］～［５］のいずれかに記載の移動体用の風力発電システム。 [6] In order to exhaust the wind flowing from the front end of the wind tunnel to the outside of the wind tunnel at a position between the front end and the rear end of the wind tunnel and corresponding to the vicinity of the rear end of the impeller. The wind power generation system for a mobile body according to any one of the above [1] to [5], which has an opening of.

［７］上記［１］～［６］のいずれかに記載の移動体用の風力発電システムを備えた、移動体。 [7] A mobile body provided with the wind power generation system for the mobile body according to any one of the above [1] to [6].

本発明にかかる風力発電システムによれば、羽根車がハブ及び複数の羽根を有し、ハブが前端部側から後端部側に向かうにつれ径が大きくなる略円錐部または略裁頭円錐部を有し、複数の羽根のそれぞれがハブの前端部近傍から後端部近傍にかけて略円錐部または略裁頭円錐部の母線に対して斜めに所定の角度をなすように形成されていることにより、羽根車による風力から回転エネルギーへの変換効率が高く、低速での走行中であっても十分な発電量を得ることが可能になる。 According to the wind power generation system according to the present invention, the impeller has a hub and a plurality of blades, and a substantially conical portion or a substantially conical portion whose diameter increases as the hub moves from the front end side to the rear end side. Each of the plurality of blades is formed so as to form an obliquely predetermined angle with respect to the generatrix of the substantially conical portion or the substantially cut conical portion from the vicinity of the front end portion to the vicinity of the rear end portion of the hub. The efficiency of conversion of wind power to rotational energy by the impeller is high, and it is possible to obtain a sufficient amount of power generation even while traveling at low speed.

本発明の実施の形態にかかる、風力発電システムの一例を示す正面図である。It is a front view which shows an example of the wind power generation system which concerns on embodiment of this invention. 本発明の実施の形態にかかる、風力発電システムの一例を示す側面図である。It is a side view which shows an example of the wind power generation system which concerns on embodiment of this invention. 本発明の実施の形態にかかる、風力発電システムの一例を示す部分断面図である。It is a partial sectional view which shows an example of the wind power generation system which concerns on embodiment of this invention. 本発明の実施の形態にかかる、風力発電システムの吸気および排気を示す模式図である。It is a schematic diagram which shows the intake and exhaust of the wind power generation system which concerns on embodiment of this invention. 本発明の実施の形態にかかる、羽根車の一例を示す斜視図である。It is a perspective view which shows an example of the impeller according to the embodiment of this invention. 本発明の実施の形態にかかる、羽根車の一例を示す模式図である。It is a schematic diagram which shows an example of the impeller according to the embodiment of this invention.

以下、図面を用いて本発明の実施の形態を説明するが、本発明は図面及び実施の形態に限定されるものではない。また、本発明は、以下に記載する好ましい数値や構成に限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the drawings and embodiments. Further, the present invention is not limited to the preferable numerical values and configurations described below.

本明細書において、「軸方向」とは、羽根車の回転軸に平行な方向のことをいう。また、「径方向」とは、羽根車の回転軸に垂直な方向のことをいう。 In the present specification, the "axial direction" means a direction parallel to the rotation axis of the impeller. Further, the "diameter direction" means a direction perpendicular to the rotation axis of the impeller.

［風力発電システム］
図１は、本発明の実施の形態にかかる風力発電システムの一例を示す正面図である。図２は、本発明の実施の形態にかかる風力発電システムの一例を示す側面図であり、図１に示す風力発電システムを真横から見た場合の図である。図３は、本発明の実施の形態にかかる風力発電システムの一例を示す部分断面図であり、図２に示す風力発電システムにおける風洞の内部の構造を示す模式図である。 [Wind power generation system]
FIG. 1 is a front view showing an example of a wind power generation system according to an embodiment of the present invention. FIG. 2 is a side view showing an example of the wind power generation system according to the embodiment of the present invention, and is a view when the wind power generation system shown in FIG. 1 is viewed from the side. FIG. 3 is a partial cross-sectional view showing an example of the wind power generation system according to the embodiment of the present invention, and is a schematic view showing the internal structure of the wind tunnel in the wind power generation system shown in FIG.

図１～３に示す風力発電システムは、略円筒状の風洞１と、風洞１を支持する台座２を備えている。また、風洞１の内部には、ハブ３及び羽根４を有する羽根車５、増速機７、出力軸８、発電機９、並びに制御装置１０が備えられている。なお、図３において、増速機７、出力軸８、発電機９、及び制御装置１０は、それぞれの具体的な構造を示すものではなく、それぞれの配置を簡略的に示すものである。 The wind power generation system shown in FIGS. 1 to 3 includes a substantially cylindrical wind tunnel 1 and a pedestal 2 that supports the wind tunnel 1. Further, inside the wind tunnel 1, an impeller 5 having a hub 3 and blades 4, a speed increaser 7, an output shaft 8, a generator 9, and a control device 10 are provided. Note that, in FIG. 3, the speed increaser 7, the output shaft 8, the generator 9, and the control device 10 do not show their specific structures, but simply show their respective arrangements.

風洞１は、その内部に風を集束させるとともに、その内部に流れ込んだ風を増速させことによって、発電量および発電効率を向上させるものである。また、風洞１は、羽根車５や発電機９など、風洞１の内部に配置されたものを保護する役割を有する。 The wind tunnel 1 improves the amount of power generation and the power generation efficiency by focusing the wind inside the wind tunnel 1 and increasing the speed of the wind flowing into the wind tunnel 1. Further, the wind tunnel 1 has a role of protecting objects arranged inside the wind tunnel 1, such as an impeller 5 and a generator 9.

風洞１は、図２及び図３に示すように、略円筒状の風洞前部１ａ、風洞連結部１ｂ、及び略円筒状の風洞後部１ｃを備えていることが好ましい。風洞前部１ａと風洞後部１ｃは所定の間隔をあけて配置されており、風洞前部１ａと風洞後部１ｃとは、両者の間に開口部ができるように、風洞連結部１ｂによって連結されている。 As shown in FIGS. 2 and 3, the wind tunnel 1 preferably includes a substantially cylindrical wind tunnel front portion 1a, a wind tunnel connecting portion 1b, and a substantially cylindrical wind tunnel rear portion 1c. The front part 1a of the wind tunnel and the rear part 1c of the wind tunnel are arranged at a predetermined interval, and the front part 1a of the wind tunnel and the rear part 1c of the wind tunnel are connected by the wind tunnel connecting part 1b so as to form an opening between them. There is.

風洞前部１ａの前端部は吸気口である。風洞前部１ａは、移動体の移動によって発生する相対的な気流を、風洞前部１ａの内部に集束させるとともに、内部に流れ込んだ気流を増速させる。その結果、内部に備えられた羽根車５に十分な風力を与えることが可能になり、発電量および発電効率を向上させることが可能になる。気流の集束効果を高めるという観点からは、図３に示すように、風洞前部１ａの前端部近傍は、風洞前部１ａの内径が徐々に小さくなるように構成されていることが好ましい。 The front end of the wind tunnel front portion 1a is an intake port. The wind tunnel front portion 1a focuses the relative airflow generated by the movement of the moving body inside the wind tunnel front portion 1a, and accelerates the airflow that has flowed into the wind tunnel front portion 1a. As a result, it becomes possible to apply sufficient wind power to the impeller 5 provided inside, and it becomes possible to improve the amount of power generation and the power generation efficiency. From the viewpoint of enhancing the focusing effect of the airflow, as shown in FIG. 3, it is preferable that the vicinity of the front end portion of the wind tunnel front portion 1a is configured so that the inner diameter of the wind tunnel front portion 1a gradually decreases.

風洞連結部１ｂは、風洞前部１ａと風洞後部１ｃとの間に開口部ができるように両者を連結するものであれば、特に制限はされない。開口部は、風洞１の内部へ流入した気流や雨などを、風洞１の外へと排出するためのものである。 The wind tunnel connecting portion 1b is not particularly limited as long as it connects the front portion 1a of the wind tunnel and the rear portion 1c of the wind tunnel so as to form an opening. The opening is for discharging the airflow, rain, etc. that have flowed into the wind tunnel 1 to the outside of the wind tunnel 1.

図４は、本発明の実施の形態にかかる、風力発電システムの吸気および排気を示す模式図である。本実施の形態にかかる風力発電システムは、風洞前部１ａの前端部から風洞前部１ａの内部へと気流を吸気し、吸気した気流の少なくとも一部を開口部から排気することができる。そのため、風洞１内における羽根車５の後方で生じ得る気流の乱れを抑制することができ、結果として、発電量および発電効率を向上させることが可能になる。また、開口部の後方に配置された増速機７や発電機９などに衝突する気流を減らすことができ、結果として、増速機７や発電機９など、開口部の後方に配置されたものの破損を防止することが可能になる。 FIG. 4 is a schematic diagram showing intake and exhaust of a wind power generation system according to an embodiment of the present invention. The wind power generation system according to the present embodiment can take in airflow from the front end portion of the wind tunnel front portion 1a into the inside of the wind tunnel front portion 1a, and exhaust at least a part of the taken airflow from the opening. Therefore, it is possible to suppress the turbulence of the airflow that may occur behind the impeller 5 in the wind tunnel 1, and as a result, it is possible to improve the power generation amount and the power generation efficiency. Further, it is possible to reduce the airflow that collides with the speed increaser 7 and the generator 9 arranged behind the opening, and as a result, the speed increaser 7 and the generator 9 are arranged behind the opening. It becomes possible to prevent damage to things.

また、開口部を備えることによって、例えば、風洞前部１ａの内部へと入り込んだ雨やゴミなども風洞１の外へと排出することができるため、増速機７や発電機９など開口部の後方に配置されたものが雨やゴミなどによって破損する可能性を低下させることが可能になる。なお、上述のように、開口部からは風洞１の外へと気流が噴き出すため、開口部から風洞１の内部へ雨やゴミが侵入する可能性は少ない。 Further, by providing the opening, for example, rain and dust that have entered the inside of the wind tunnel front portion 1a can be discharged to the outside of the wind tunnel 1, so that the opening such as the speed increaser 7 and the generator 9 can be discharged. It is possible to reduce the possibility that something placed behind the will be damaged by rain or dust. As described above, since the airflow is ejected from the opening to the outside of the wind tunnel 1, there is little possibility that rain or dust will enter the inside of the wind tunnel 1 from the opening.

開口部は、羽根車５の後端部近傍に対応する位置にあることが好ましい。本実施の形態にかかる羽根４は、羽根車５の前端部では受風面積が大きく、羽根車５の後端部へ向かうにつれ受風面積が小さくなるように構成されている。そのため、羽根車５の前端部では気流が羽根車５の回転に与える影響が大きいが、羽根車５の後端部では気流が羽根車５の回転に与える影響が少ないためである。開口部が羽根車５の後端部近傍に対応する位置にあることによって、羽根車５に十分な回転エネルギーを与え、かつ、開口部の後方に配置されたものの破損を防止することが可能になる。 The opening is preferably located at a position corresponding to the vicinity of the rear end portion of the impeller 5. The blade 4 according to the present embodiment is configured so that the wind receiving area is large at the front end portion of the impeller 5 and the wind receiving area becomes smaller toward the rear end portion of the impeller 5. Therefore, the airflow has a large influence on the rotation of the impeller 5 at the front end of the impeller 5, but the airflow has little influence on the rotation of the impeller 5 at the rear end of the impeller 5. By having the opening at a position corresponding to the vicinity of the rear end of the impeller 5, it is possible to give sufficient rotational energy to the impeller 5 and prevent damage to those arranged behind the opening. Become.

開口部の幅、すなわち、風洞前部１ａの後端部と風洞後部１ｃの前端部との間の距離は、風洞前部１ａの内部に流れ込んだ気流の少なくとも一部を排気できるものであれば、特に制限はされない。 The width of the opening, that is, the distance between the rear end of the wind tunnel front 1a and the front end of the wind tunnel rear 1c, is such that at least a part of the airflow flowing into the wind tunnel front 1a can be exhausted. , There are no particular restrictions.

風洞後部１ｃの内部には、増速機７、出力軸８、発電機９、及び制御装置１０が配置されている。風洞後部１ｃは、内部に配置されたものを保護する役割を有する。風洞後部１ｃの形状や大きさは特に制限されず、発電機９の形状や大きさに応じて適宜決定することができ、例えば、風洞前部１ａと異なっていても良い。 A speed increaser 7, an output shaft 8, a generator 9, and a control device 10 are arranged inside the rear portion 1c of the wind tunnel. The rear part 1c of the wind tunnel has a role of protecting what is arranged inside. The shape and size of the wind tunnel rear portion 1c are not particularly limited, and can be appropriately determined according to the shape and size of the generator 9, and may be different from, for example, the wind tunnel front portion 1a.

台座２は、風洞１を支持する。台座２の形状や大きさは、特に制限はされず、移動体の種類や大きさ、移動体に取り付ける位置に応じて、適宜決定することができる。 The pedestal 2 supports the wind tunnel 1. The shape and size of the pedestal 2 are not particularly limited, and can be appropriately determined according to the type and size of the moving body and the position to be attached to the moving body.

羽根車５は、羽根車５の後端部近傍が風洞１の開口部に対応する位置に配置され、その他の部分が風洞前部１ａの内部に位置するよう配置されている。羽根車５は、ハブ３と、複数の羽根４と、回転軸とを備えている。 The impeller 5 is arranged so that the vicinity of the rear end portion of the impeller 5 is located at a position corresponding to the opening of the wind tunnel 1, and the other portions are located inside the wind tunnel front portion 1a. The impeller 5 includes a hub 3, a plurality of blades 4, and a rotation shaft.

ハブ３は、ハブ３の前端部側から後端部側に向かうにつれ径が大きくなる略円錐部または略裁頭円錐部を有する。ハブ３の前端部側の径が小さいことにより、ハブ３の前端部近傍では、羽根４の径方向の長さを長くすることができる。そのため、羽根４が受ける気流を効率よく回転エネルギーに変換することができ、例えば、低速（例えば、時速１０ｋｍ程度）で移動する場合であっても、十分な発電量を得ることが可能になる。 The hub 3 has a substantially conical portion or a substantially conical portion whose diameter increases from the front end side to the rear end side of the hub 3. Since the diameter of the front end portion of the hub 3 is small, the radial length of the blade 4 can be increased in the vicinity of the front end portion of the hub 3. Therefore, the airflow received by the blade 4 can be efficiently converted into rotational energy, and a sufficient amount of power generation can be obtained even when moving at a low speed (for example, about 10 km / h).

また、ハブ３の後端部側の径が大きいことにより、ハブ３の後端部近傍では、径の大きさが羽根４の径方向の長さの数倍になる。そのため、本実施の形態にかかる羽根車５は、十分な強度と耐久性を有し、例えば、高速で移動する場合に強い気流に受けたとしても、破損する恐れが少ない。 Further, since the diameter on the rear end portion side of the hub 3 is large, the diameter is several times the radial length of the blade 4 in the vicinity of the rear end portion of the hub 3. Therefore, the impeller 5 according to the present embodiment has sufficient strength and durability, and is less likely to be damaged even if it is exposed to a strong air flow when moving at high speed, for example.

ハブ３の略円錐部または略裁頭円錐部の底面の直径は、特に制限はされないが、風洞前部１ａの内部に流入した気流を効率良く回転エネルギーに変換するという観点からは、例えば、風洞前部１ａの内径と略等しいことが好ましい。 The diameter of the bottom surface of the substantially conical portion or the substantially conical portion of the hub 3 is not particularly limited, but from the viewpoint of efficiently converting the airflow flowing into the inside of the wind tunnel front portion 1a into rotational energy, for example, the wind tunnel. It is preferably substantially equal to the inner diameter of the front portion 1a.

回転軸は、略円錐部の頂点と底面の円の中心とを結ぶ線分上、または略裁頭円錐部の上面の円の中心と底面の円の中心とを結ぶ線分上に設けられている。回転軸は、ハブ３と一体的に形成されていても良いし、ハブ３と独立して形成し、ハブ３に嵌合させても良い。羽根車５の回転に連動して回転軸が回転し、その回転が増速機７に入力されることになる。 The axis of rotation is provided on a line segment connecting the apex of the substantially conical portion and the center of the circle on the bottom surface, or on the line segment connecting the center of the circle on the upper surface of the substantially cut cone and the center of the circle on the bottom surface. There is. The rotation shaft may be formed integrally with the hub 3 or may be formed independently of the hub 3 and fitted to the hub 3. The rotation shaft rotates in conjunction with the rotation of the impeller 5, and the rotation is input to the speed increaser 7.

複数の羽根４のそれぞれは、ハブ３の前端部近傍から後端部近傍にかけて、略円錐部または略裁頭円錐部の母線に対して斜めに所定の角度をなすように形成されており、尚且つ風洞前部１ａの内径に近い直径（羽根径）を有している。このような構成により、羽根４が受ける受風面積が大きくなり、また、風洞前部１ａ内に流入するほぼ全ての気流を複数の羽根４のいずれかで受けることができるため、羽根車に十分な回転エネルギーを与え、十分な回転数を得ることが可能になる。 Each of the plurality of blades 4 is formed so as to form an obliquely predetermined angle with respect to the generatrix of the substantially conical portion or the substantially cut conical portion from the vicinity of the front end portion to the vicinity of the rear end portion of the hub 3. It has a diameter (blade diameter) close to the inner diameter of the front part 1a of the cone. With such a configuration, the receiving area received by the blade 4 becomes large, and almost all the airflow flowing into the front portion 1a of the wind tunnel can be received by any of the plurality of blades 4, which is sufficient for the impeller. It is possible to obtain a sufficient number of rotations by giving a large amount of rotation energy.

前記所定の角度としては、特に制限はされないが、例えば、２５度以上が好ましく、また、４０度以下が好ましい。前記所定の角度が２５度未満の場合、例えば、羽根４と気流とが衝突しにくくなり、羽根車の回転数が低下する恐れがある。また、前記所定の角度が４０度を越える場合、例えば、羽根４と気流とが衝突した後に気流の乱れが発生しやすくなり、羽根車の回転数が低下する恐れがある。 The predetermined angle is not particularly limited, but is preferably 25 degrees or more, and is preferably 40 degrees or less, for example. If the predetermined angle is less than 25 degrees, for example, the blade 4 and the airflow are less likely to collide, and the rotation speed of the impeller may decrease. Further, when the predetermined angle exceeds 40 degrees, for example, the turbulence of the airflow is likely to occur after the blade 4 and the airflow collide with each other, and the rotation speed of the impeller may decrease.

また、羽根４は、略円錐部または略裁頭円錐部の側面を１周以上するような、いわゆる螺旋状に形成されていても良いが、隣り合う２つの羽根４の間の空間で気流の乱れを生じにくくするという観点からは、略円錐部または略裁頭円錐部の側面を１周することなく形成されていることが好ましい。 Further, the blade 4 may be formed in a so-called spiral shape such that the side surface of the substantially conical portion or the substantially conical portion makes one or more turns, but the airflow flows in the space between the two adjacent blades 4. From the viewpoint of making it difficult for turbulence to occur, it is preferable that the cone is formed without going around the side surface of the substantially conical portion or the substantially cut conical portion.

図１に示す正面図では、複数の羽根４それぞれが、ハブ３の前端部近傍（略裁頭円錐部の上面近傍の側面）から放射状に、風洞１の内壁近傍まで伸びている。ハブ３の前端部近傍において、羽根４が十分な長さを有することにより、風洞前部１ａの内部に流入した気流を効率良く回転エネルギーに変換することができる。 In the front view shown in FIG. 1, each of the plurality of blades 4 extends radially from the vicinity of the front end portion of the hub 3 (the side surface near the upper surface of the substantially cut cone portion) to the vicinity of the inner wall of the wind tunnel 1. Since the blade 4 has a sufficient length in the vicinity of the front end portion of the hub 3, the airflow flowing into the inside of the wind tunnel front portion 1a can be efficiently converted into rotational energy.

以下、図５および図６を用いて、本実施の形態にかかる羽根車についてさらに説明をする。図５は、本発明の実施の形態にかかる、羽根車の一例を示す斜視図である。図６は、本発明の実施の形態にかかる、羽根車の一例を示す模式図であり、理解を容易にするため、羽根車の一部を簡略化して示している。そのため、図５と整合がとれていない部分があるが、整合がとれていない部分は、図５に従って解釈されることが正しい。 Hereinafter, the impeller according to the present embodiment will be further described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing an example of an impeller according to an embodiment of the present invention. FIG. 6 is a schematic view showing an example of an impeller according to an embodiment of the present invention, and a part of the impeller is shown in a simplified manner for easy understanding. Therefore, there is a part that is not consistent with FIG. 5, but it is correct that the part that is not consistent is interpreted according to FIG.

図５及び図６に示す羽根車５は、略裁頭円錐部を有するハブ３と、複数の羽根４と、回転軸６とを備えている。また、図６に示すハブ３は、略裁頭円錐部の上面の円の中心と底面の円の中心とを結ぶ線分を含む平面によってハブ３を切断した場合の断面を模式的に表したものである。また、羽根４は、対向する位置にある２枚のみを簡略的に示し、その他の羽根４は省略している。正確には、図６における上側の羽根４は、羽根車５の前端部では図の奥側に位置し、羽根車５の後端部では図の手前側に位置するものである。また、図６における下側の羽根４は、羽根車５の前端部では図の手前側に位置し、羽根車５の後端部では図の奥側に位置するものである。なお、図５および図６に示すハブ３、複数の羽根４、羽根車５、および回転軸６に関しては、図１～４などを用いて上述した内容を適宜援用することができるため、重複する説明は省略する。 The impeller 5 shown in FIGS. 5 and 6 includes a hub 3 having a substantially cut conical portion, a plurality of blades 4, and a rotating shaft 6. Further, the hub 3 shown in FIG. 6 schematically represents a cross section when the hub 3 is cut by a plane including a line segment connecting the center of the circle on the upper surface and the center of the circle on the lower surface of the substantially cut cone portion. It is a thing. Further, only two blades 4 at opposite positions are simply shown, and the other blades 4 are omitted. To be precise, the upper blade 4 in FIG. 6 is located on the back side of the figure at the front end of the impeller 5, and is located on the front side of the figure at the rear end of the impeller 5. Further, the lower blade 4 in FIG. 6 is located on the front side of the figure at the front end of the impeller 5, and is located on the back side of the figure at the rear end of the impeller 5. Regarding the hub 3, the plurality of blades 4, the impeller 5, and the rotary shaft 6 shown in FIGS. 5 and 6, the above-mentioned contents can be appropriately incorporated by using FIGS. 1 to 4 and the like, so that they overlap with each other. The explanation is omitted.

図５に示すように、径方向における羽根４の長さは、例えば、ハブ３の前端部近傍では長く、ハブ３の後端部近傍では短くなっていることが好ましい。また、羽根車５の回転軸に垂直な任意の平面によって羽根車５を切断した場合に、その断面における羽根４の長さが、略円錐部または略裁頭円錐部の底面の半径と、略円錐部または略裁頭円錐部の断面の半径との差と略等しいことが好ましい。これらのような構成により、風力から回転エネルギーへの変換効率をより高めることができ、例えば、移動体が低速で移動するような場合であっても、十分な発電量を得ることが可能になる。 As shown in FIG. 5, it is preferable that the length of the blade 4 in the radial direction is long in the vicinity of the front end portion of the hub 3 and short in the vicinity of the rear end portion of the hub 3. Further, when the impeller 5 is cut by an arbitrary plane perpendicular to the rotation axis of the impeller 5, the length of the blade 4 in the cross section is substantially the radius of the bottom surface of the substantially conical portion or the substantially cut cone portion. It is preferable that the difference from the radius of the cross section of the conical portion or the substantially cut cone portion is substantially equal to the difference. With such a configuration, the efficiency of conversion from wind power to rotational energy can be further increased, and for example, even when a moving body moves at a low speed, a sufficient amount of power generation can be obtained. ..

同様の観点から、羽根４の形状としては、例えば、略三角形状が好ましく、略直角三角形状がより好ましい。羽根４の形状を略三角形状または略直角三角形状とする場合、斜辺に相当する部位と略円錐部または略裁頭円錐部の側面とが接するように羽根車５を構成することが好ましい。 From the same viewpoint, the shape of the blade 4 is preferably, for example, a substantially triangular shape, and more preferably a substantially right-angled triangular shape. When the shape of the blade 4 is a substantially triangular shape or a substantially right-angled triangular shape, it is preferable to configure the impeller 5 so that the portion corresponding to the hypotenuse and the side surface of the substantially conical portion or the substantially cut conical portion are in contact with each other.

なお、ハブ３の後端部近傍では径が大きくなっているため、ハブ３の後端部近傍では、羽根車５における気流が通過するスペースが小さくなり、気流の圧力が増加する。気流の圧力を増加させた状態で、気流を風洞１に設けられた開口部へ導くことによって、開口部からの排気を効率的に行うことができ、風洞後部１ｃの内部に配置されたものが破損する可能性を低下させることが可能になる。 Since the diameter is large in the vicinity of the rear end portion of the hub 3, the space through which the airflow in the impeller 5 passes becomes small in the vicinity of the rear end portion of the hub 3, and the pressure of the airflow increases. By guiding the airflow to the opening provided in the wind tunnel 1 with the pressure of the airflow increased, the exhaust from the opening can be efficiently performed, and the one arranged inside the rear part 1c of the wind tunnel can be efficiently performed. It is possible to reduce the possibility of damage.

図３の説明に戻る。増速機７は、羽根車５と発電機９との間に配置される。増速機７は、羽根車５の回転軸（入力軸）６から入力された回転数を増加させ、出力軸８を介して発電機９へと伝える。増速機７を備えることで、移動体の移動速度が遅く、羽根車の回転数が不十分な場合でも、十分な発電量および発電効率を得ることが可能になる。増速機７としては、特に制限はされず、例えば、要求される発電量または発電機９の種類などに応じて、従来公知のものを適宜採用することができる。 Returning to the description of FIG. The speed increaser 7 is arranged between the impeller 5 and the generator 9. The speed increaser 7 increases the number of rotations input from the rotation shaft (input shaft) 6 of the impeller 5 and transmits the rotation speed to the generator 9 via the output shaft 8. By providing the speed increaser 7, it is possible to obtain a sufficient amount of power generation and power generation efficiency even when the moving speed of the moving body is slow and the rotation speed of the impeller is insufficient. The speed increaser 7 is not particularly limited, and for example, a conventionally known one can be appropriately adopted depending on the required power generation amount, the type of the generator 9, and the like.

発電機９は、出力軸８を介して伝達された回転エネルギーを電気エネルギーに変換する。発電機としては、特に制限はされず、例えば、移動体に備えられた蓄電池の種類などに応じて、従来公知のものを適宜採用することができる。発電機９としては、直流発電機でも良いし、交流発電機でもよいが、例えば、発生した電流を蓄電池に蓄電させる場合、直流発電機、または整流器を備えた交流発電機（例えば、オルタネータ）が好ましい。 The generator 9 converts the rotational energy transmitted via the output shaft 8 into electrical energy. The generator is not particularly limited, and for example, a conventionally known generator can be appropriately adopted depending on the type of storage battery provided in the moving body and the like. The generator 9 may be a DC generator or an AC generator. For example, when the generated current is stored in a storage battery, a DC generator or an AC generator equipped with a rectifier (for example, an alternator) is used. preferable.

発電機９によって得られた電気エネルギーは、移動体に備えられた蓄電池（図示せず）において蓄電される。蓄電池としては特に制限されず、例えば、リチウムイオン電池、鉛蓄電池など従来公知のものを適宜採用することができる。また、いわゆる全固体電池であっても良い。移動体が動力源として蓄電池を備えている場合は、動力源である蓄電池に蓄電されることが好ましい。 The electric energy obtained by the generator 9 is stored in a storage battery (not shown) provided in the moving body. The storage battery is not particularly limited, and for example, a conventionally known storage battery such as a lithium ion battery or a lead storage battery can be appropriately adopted. Further, a so-called all-solid-state battery may be used. When the mobile body is provided with a storage battery as a power source, it is preferable that the storage is stored in the storage battery which is the power source.

制御装置１０は、ケーブル等（図示せず）を介して、発電機９と電気的に接続されている。制御装置１０は、発電機９によって得られた電気エネルギーを蓄電池に蓄電する際の制御を行う。制御装置１０は、例えば、蓄電池がリチウムイオン電池の場合等に過充電などが起きないよう、蓄電池への出力電圧の制御などを行う。なお、蓄電池が鉛蓄電池の場合など、蓄電池への出力電圧の制御が不要な場合は、制御装置１０を備えていなくても良い。制御装置１０は、風洞後部１ｃの内部ではなく、例えば、蓄電池の近傍に備えられていても良い。 The control device 10 is electrically connected to the generator 9 via a cable or the like (not shown). The control device 10 controls when the electric energy obtained by the generator 9 is stored in the storage battery. The control device 10 controls the output voltage to the storage battery so that overcharging does not occur when the storage battery is a lithium ion battery, for example. If it is not necessary to control the output voltage to the storage battery, such as when the storage battery is a lead storage battery, the control device 10 may not be provided. The control device 10 may be provided in the vicinity of the storage battery, for example, instead of the inside of the rear portion 1c of the wind tunnel.

［移動体］
次に、本発明の実施の形態にかかる、移動体について説明をする。移動体とは、例えば、陸上、海上、または空中を、風力発電が可能な所定の速度（例えば、１０ｋｍ／時）以上で移動可能なものをいう。移動体の具体例としては、自転車、バイク、自動車、船舶、無人航空機（例えば、ドローン）などが挙げられる。 [Mobile]
Next, the moving body according to the embodiment of the present invention will be described. The moving body means, for example, a moving body that can move on land, at sea, or in the air at a predetermined speed (for example, 10 km / hour) or higher at which wind power generation is possible. Specific examples of the moving body include bicycles, motorcycles, automobiles, ships, unmanned aerial vehicles (for example, drones) and the like.

移動体の動力源は、人力、ガソリン、電力など、特に制限はされないが、電力が好ましい。例えば、蓄電池に備えられた電力を動力源とする移動体であれば、移動によって消費した電力を風力発電システムによって発電した電力で補うことができるので、航続距離を伸ばすことが可能になる。電力を動力源とする移動体の具体例としては、電動自転車、電動バイク、電気自動車、ドローンなどが挙げられる。なお、移動体の動力源が電力でない場合でも、発電した電力を蓄電池に蓄え、他の用途に使用することができるため、有用である。 The power source of the moving body is not particularly limited, such as human power, gasoline, and electric power, but electric power is preferable. For example, in the case of a mobile body powered by the electric power provided in the storage battery, the electric power consumed by the movement can be supplemented by the electric power generated by the wind power generation system, so that the cruising distance can be extended. Specific examples of a moving body powered by electric power include an electric bicycle, an electric motorcycle, an electric vehicle, and a drone. Even if the power source of the mobile body is not electric power, the generated electric power can be stored in a storage battery and used for other purposes, which is useful.

風力発電システムの取り付け位置は、移動によって発生する相対的な気流を受けることができる位置であれば、特に制限はされない。風力発電システムの取り付け位置は、移動体の内部であっても外部であっても良く、移動体の種類や大きさに応じて、適宜決定すればよい。移動体が電気自動車の場合、例えば、スポイラーなどのエアロパーツを取り付ける位置や、ボンネットの中などが挙げられる。ボンネットの中に取り付ける場合は、例えば、フロントグリルから流入する気流によって発電を行う。また、電気自動車のボディに専用の取り付けスペースを設け、風力発電システムの吸気口に気流が流れこめる態様にてボディに埋め込んでも良い。破損する可能性を低下できるという観点からは、ボンネットに配置する、又はボディに埋め込む態様で配置することが好ましい。 The mounting position of the wind power generation system is not particularly limited as long as it can receive the relative airflow generated by the movement. The mounting position of the wind power generation system may be inside or outside the moving body, and may be appropriately determined according to the type and size of the moving body. When the moving body is an electric vehicle, for example, the position where aero parts such as a spoiler are attached, the inside of the hood, and the like can be mentioned. When installed in the bonnet, for example, power is generated by the airflow flowing from the front grill. Further, a dedicated mounting space may be provided in the body of the electric vehicle, and the space may be embedded in the body so that the airflow can flow into the intake port of the wind power generation system. From the viewpoint of reducing the possibility of breakage, it is preferable to arrange the bonnet or embed it in the body.

移動体に取り付ける風力発電システムの数は、特に制限はされず、要求される発電量に応じて、適宜決定すれば良い。上述した実施の形態にかかる風力発電システムは、従来の風力発電所に設置されている風力発電装置と比べて非常に小型かつ軽量であるため、移動体への取り付けが容易であり、また、複数取り付けた場合でも移動体の重量的な負担が少ない。 The number of wind power generation systems attached to the moving body is not particularly limited and may be appropriately determined according to the required power generation amount. Since the wind power generation system according to the above-described embodiment is extremely small and lightweight as compared with the wind power generation device installed in a conventional wind power plant, it is easy to attach to a mobile body, and a plurality of wind power generation systems are available. Even when attached, the weight burden on the moving body is small.

１ 風洞
１ａ 風洞前部
１ｂ 風洞連結部
１ｃ 風洞後部
２ 台座
３ ハブ
４ 羽根
５ 羽根車
６ 回転軸（入力軸）
７ 増速機
８ 出力軸
９ 発電機
１０ 制御装置 1 Wind tunnel 1a Wind tunnel front 1b Wind tunnel connection 1c Wind tunnel rear 2 Pedestal 3 Hub 4 Blade 5 Impeller 6 Rotating shaft (input shaft)
7 Accelerator 8 Output shaft 9 Generator 10 Control device

Claims (7)

風洞と、
風洞内に配置され、ハブ及び複数の羽根を有する羽根車と、
羽根車の回転によって発電する発電機とを備え、
ハブが、前端部側から後端部側に向かうにつれ径が大きくなる略円錐部または略裁頭円錐部を有し、
複数の羽根のそれぞれが、ハブの前端部近傍から後端部近傍にかけて、略円錐部または略裁頭円錐部の母線に対して斜めに所定の角度をなすように形成されている、
移動体用の風力発電システム。 Wind tunnel and
An impeller, which is located in a wind tunnel and has a hub and multiple blades,
Equipped with a generator that generates electricity by rotating the impeller,
The hub has a substantially conical portion or a substantially truncated conical portion whose diameter increases from the front end side to the rear end side.
Each of the plurality of blades is formed so as to form an obliquely predetermined angle with respect to the generatrix of the substantially conical portion or the substantially cut conical portion from the vicinity of the front end portion to the vicinity of the rear end portion of the hub.
Wind power generation system for mobiles. 羽根が、略三角形状であり、略三角形状の斜辺に相当する部位と略円錐部または略裁頭円錐部の側面とが接するように形成されている、
請求項１に記載の移動体用の風力発電システム。 The wing is substantially triangular and is formed so that the portion corresponding to the hypotenuse of the substantially triangular shape is in contact with the side surface of the substantially conical portion or the substantially cut head conical portion.
The wind power generation system for a mobile body according to claim 1. 羽根車の回転軸に垂直な任意の平面によって羽根車を切断した場合に、断面における羽根の長さが、略円錐部または略裁頭円錐部の底面の半径と、略円錐部または略裁頭円錐部の断面の半径との差と略等しい、
請求項１または２に記載の移動体用の風力発電システム。 When the impeller is cut by any plane perpendicular to the axis of rotation of the impeller, the length of the blade in the cross section is the radius of the bottom surface of the substantially conical or roughly cut cone and the substantially conical or roughly cut head. Approximately equal to the difference from the radius of the cross section of the cone,
The wind power generation system for a mobile body according to claim 1 or 2. 所定の角度が、２５～４５度である、
請求項１～３のいずれかに記載の移動体用の風力発電システム。 The predetermined angle is 25-45 degrees,
The wind power generation system for a mobile body according to any one of claims 1 to 3. 任意の１の羽根に着目した場合、該１の羽根が、略円錐部または略裁頭円錐部の側面を１周することなく形成されている、
請求項１～４のいずれかに記載の移動体用の風力発電システム。 Focusing on any one blade, the one blade is formed without going around the side surface of the substantially conical portion or the substantially cut conical portion.
The wind power generation system for a mobile body according to any one of claims 1 to 4. 風洞が、風洞の前端部と後端部との間であって、羽根車の後端部近傍に対応する位置に、風洞の前端部から流入した風を風洞の外へ排気するための開口部を有する、
請求項１～５のいずれかに記載の移動体用の風力発電システム。 An opening for exhausting the wind flowing from the front end of the wind tunnel to the outside of the wind tunnel at a position corresponding to the vicinity of the rear end of the impeller between the front end and the rear end of the wind tunnel. Have,
The wind power generation system for a mobile body according to any one of claims 1 to 5. 請求項１～６のいずれかに記載の移動体用の風力発電システムを備えた、移動体。 A mobile body comprising the wind power generation system for the mobile body according to any one of claims 1 to 6.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587864A (en) * 1978-12-27 1980-07-03 Nagao Furukawa Wind-driven power plant utilizing controlled wind
DE102009016899A1 (en) * 2009-04-08 2010-10-28 Bruns, Cord Jürgen Dynamic pressure generator for producing electric energy for motor vehicle i.e. electric vehicle, has turbine including outer casing, cup-shaped inner casing, lying blades and attaching hub connected into single unit
JP7030511B2 (en) * 2017-12-28 2022-03-07 訓範 津田 Wind power generation system for mobiles, and mobiles equipped with it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587864A (en) * 1978-12-27 1980-07-03 Nagao Furukawa Wind-driven power plant utilizing controlled wind
DE102009016899A1 (en) * 2009-04-08 2010-10-28 Bruns, Cord Jürgen Dynamic pressure generator for producing electric energy for motor vehicle i.e. electric vehicle, has turbine including outer casing, cup-shaped inner casing, lying blades and attaching hub connected into single unit
JP7030511B2 (en) * 2017-12-28 2022-03-07 訓範 津田 Wind power generation system for mobiles, and mobiles equipped with it

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