JP3494056B2 - Outer rotor type magnet generator - Google Patents
Outer rotor type magnet generatorInfo
- Publication number
- JP3494056B2 JP3494056B2 JP01531299A JP1531299A JP3494056B2 JP 3494056 B2 JP3494056 B2 JP 3494056B2 JP 01531299 A JP01531299 A JP 01531299A JP 1531299 A JP1531299 A JP 1531299A JP 3494056 B2 JP3494056 B2 JP 3494056B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor yoke
- rotor
- fan
- cylindrical portion
- cooling air
- 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.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 claims description 50
- 238000009423 ventilation Methods 0.000 claims description 36
- 230000000630 rising effect Effects 0.000 claims description 12
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 10
- 238000007664 blowing Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アウターロータ型
磁石発電機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer rotor type magnet generator.
【０００２】[0002]
【従来の技術】図３は、従来のアウターロータ型磁石発
電機の構成を示したものである。このアウターロータ型
磁石発電機は、環状のステータコア１の外周の各突極１
ａにコイル２を巻装したステータ３と、該ステータ３の
外周をロータヨーク４の筒部４ａが包囲していて該筒部
４ａの内周に永久磁石５を支持させたロータ６と、環状
のステータコア１を外周に固定している筒状のボス７
と、ロータヨーク４の底部４ｂの中心に取り付けられて
ボス７の内周を複数の軸受８を介して回転自在に貫通す
る回転軸９と、ロータヨーク４の開口端側で回転軸９に
直交する向きで且つ回転軸９を回転自在に貫通させてボ
ス７の端部に固定されている取付けプレート１０と、ロ
ータヨーク４の筒部４ａ内に回転軸９の方向に冷却風が
通り抜けるように取付けプレート１０とロータヨーク４
とにそれぞれ周方向に所定の間隔で複数設けられた通風
口１１ａ，１１ｂと、各通風口１１ａ，１１ｂを経てロ
ータヨーク４の筒部４ａ内を冷却風が通り抜けるように
ロータヨーク４の内周部に複数の羽根部１２を固定して
設けられたファン１３と、取付けプレート１０側でその
外に突出されている回転軸９にナット１４で固定された
いるプーリ１５とを備えた構造になっている。取付けプ
レート１０は、ロータヨーク４の筒部４ａの外周を包囲
する筒部１０ａと、ロータヨーク４の筒部４ａの開口部
側で筒部１０ａの一端を塞ぐ底部１０ｂと、筒部１０ａ
の外周に突設された取付け鍔部１０ｃとを備えた構造に
なっていて、底部１０ｂに周方向の所定の間隔で通風口
１１ａが設けられている。他方の各通風口１１ｂは、ロ
ータヨーク４の底部１０ｂ寄り筒部４ａの末端にそれぞ
れ設けられている。各軸受８は、複数のカラー１６で回
転軸９の外周に位置決めされている。ステータコア１
は、ネジ１７で取付けプレート１０に固定されている。2. Description of the Related Art FIG. 3 shows the structure of a conventional outer rotor type magnet generator. This outer rotor type magneto-generator is configured such that each salient pole 1 on the outer circumference of an annular stator core 1
a stator 3 in which the coil 2 is wound around a, a rotor 6 surrounding the outer periphery of the stator 3 with a tubular portion 4a of the rotor yoke 4, and a permanent magnet 5 supported on the inner periphery of the tubular portion 4a; Cylindrical boss 7 fixing stator core 1 to the outer periphery
A rotary shaft 9 attached to the center of the bottom portion 4b of the rotor yoke 4 and rotatably passing through the inner circumference of the boss 7 via a plurality of bearings 8; and a direction orthogonal to the rotary shaft 9 on the open end side of the rotor yoke 4. And the mounting plate 10 which is rotatably pierced through the rotating shaft 9 and fixed to the end of the boss 7, and the mounting plate 10 which allows cooling air to pass through the cylindrical portion 4a of the rotor yoke 4 in the direction of the rotating shaft 9. And rotor yoke 4
And a plurality of ventilation openings 11a and 11b provided at predetermined intervals in the circumferential direction, and an inner peripheral portion of the rotor yoke 4 so that the cooling air can pass through the cylindrical portion 4a of the rotor yoke 4 through the ventilation openings 11a and 11b. The fan 13 has a plurality of blades 12 fixed to it, and the pulley 15 is fixed to the rotating shaft 9 on the mounting plate 10 side by a nut 14 so as to protrude therefrom. . The mounting plate 10 includes a tubular portion 10a that surrounds the outer periphery of the tubular portion 4a of the rotor yoke 4, a bottom portion 10b that closes one end of the tubular portion 10a on the opening side of the tubular portion 4a of the rotor yoke 4, and a tubular portion 10a.
It has a structure including a mounting flange portion 10c projectingly provided on the outer periphery of the above, and ventilation holes 11a are provided on the bottom portion 10b at predetermined intervals in the circumferential direction. The other ventilation ports 11b are provided at the ends of the cylindrical portion 4a of the rotor yoke 4 near the bottom portion 10b. Each bearing 8 is positioned on the outer circumference of the rotating shaft 9 by a plurality of collars 16. Stator core 1
Are fixed to the mounting plate 10 with screws 17.
【０００３】このようなアウターロータ型磁石発電機で
は、ロータヨーク４の回転につれてファン１３の各羽根
部１２を回転させ、これら羽根部１２の回転による送風
作用により、プーリ１５側で取付けプレート１０に設け
られた各通風口１１ａから外気を吸い込んで、この外気
をロータヨーク４の筒部４ａ内に回転軸９に沿って各突
極１ａ間の隙間を通し、これによりステータ３及び永久
磁石５を冷却し、筒部４ａ内を通り抜けた排気をロータ
ヨーク４の底部１０ｂ寄りの筒部４ａの末端の各通風口
１１ｂから外部に排出する。In such an outer rotor type magneto-generator, each blade portion 12 of the fan 13 is rotated as the rotor yoke 4 rotates, and the rotation of these blade portions 12 provides a blowing action to provide the pulley 15 side to the mounting plate 10. The outside air is sucked in through the respective ventilation holes 11a, and the outside air is passed through the gap between the salient poles 1a along the rotating shaft 9 into the cylindrical portion 4a of the rotor yoke 4, thereby cooling the stator 3 and the permanent magnet 5. The exhaust gas that has passed through the inside of the tubular portion 4a is exhausted to the outside from each ventilation port 11b at the end of the tubular portion 4a near the bottom 10b of the rotor yoke 4.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のアウターロータ型磁石発電機のファン１３に
よる冷却構造では、次のような問題点があった。However, the conventional cooling structure using the fan 13 of the outer rotor type magneto-generator has the following problems.
【０００５】（ａ）ステータ３の冷却はよいが、永久磁
石５の冷却が不十分である。(A) Cooling of the stator 3 is good, but cooling of the permanent magnet 5 is insufficient.
【０００６】（ｂ）永久磁石５の冷却が不十分なため、
発電出力が低下する。(B) Due to insufficient cooling of the permanent magnet 5,
The power output decreases.
【０００７】なお、永久磁石５の温度上昇は、周囲温度
やステータ３からの熱伝導等により起こっている。The temperature rise of the permanent magnet 5 is caused by the ambient temperature, heat conduction from the stator 3, and the like.
【０００８】本発明の目的は、永久磁石の冷却を効率よ
く行えるアウターロータ型磁石発電機を得ることにあ
る。An object of the present invention is to obtain an outer rotor type magnet generator capable of efficiently cooling a permanent magnet.
【０００９】本発明の他の目的は、永久磁石の温度上昇
による発電出力の低下を防止できるアウターロータ型磁
石発電機を得ることにある。Another object of the present invention is to obtain an outer rotor type magnet generator capable of preventing a decrease in power generation output due to a rise in temperature of a permanent magnet.
【００１０】[0010]
【課題を解決するための手段】本発明は、環状のステー
タコアにコイルを巻装したステータと、該ステータの外
周をロータヨークの筒部が包囲していて該筒部の内周に
永久磁石を支持させたロータと、環状のステータコアを
外周に固定している筒状のボスと、ロータヨークの底部
の中心に取り付けられてボスの内周を軸受を介して回転
自在に貫通する回転軸と、ロータヨークの開口端側で回
転軸に直交する向きで且つ回転軸を回転自在に貫通させ
てボスの端部に固定されている取付けプレートと、ロー
タヨークの筒部内に回転軸の方向に冷却風が通り抜ける
ように取付けプレートとロータヨークとにそれぞれ設け
られた通風口と、各通風口を経てロータヨークの筒部内
を冷却風が通り抜けるようにロータヨークに設けられた
ファンとを備えたアウターロータ型磁石発電機を改良す
るものである。SUMMARY OF THE INVENTION According to the present invention, a stator in which a coil is wound around an annular stator core, and a cylindrical portion of a rotor yoke surrounds the outer periphery of the stator, and a permanent magnet is supported on the inner periphery of the cylindrical portion. Of the rotor, a cylindrical boss that fixes an annular stator core to the outer periphery, a rotary shaft that is attached to the center of the bottom of the rotor yoke and rotatably penetrates the inner periphery of the boss through a bearing, and The mounting plate is fixed to the end of the boss by rotatably penetrating the rotary shaft on the opening end side in a direction orthogonal to the rotary shaft, and allows cooling air to pass through in the cylinder of the rotor yoke in the direction of the rotary shaft. The mounting plate and the rotor yoke were respectively provided with ventilation holes, and a fan provided on the rotor yoke so that cooling air could pass through the ventilation holes through the cylindrical portion of the rotor yoke. It is intended to improve the outer rotor magnet generator.
【００１１】本発明に係るアウターロータ型磁石発電機
では、各通風口はロータヨークの底部と、この底部に対
向する取付けプレートの部分とに設けられている。ファ
ンは、ロータヨークの底部の外で、該底部の通風口から
該ロータヨークの筒部内を通る冷却風を吸出してロータ
ヨークの筒部の外周に吹付けるように設けられている。In the outer rotor type magneto-generator according to the present invention, each ventilation port is provided in the bottom portion of the rotor yoke and the portion of the mounting plate facing the bottom portion. The fan is provided outside the bottom portion of the rotor yoke so as to suck the cooling air passing through the inside of the cylindrical portion of the rotor yoke from the ventilation port of the bottom portion and blow the cooling air to the outer periphery of the cylindrical portion of the rotor yoke.
【００１２】このように各通風口を、ロータヨークの底
部と、この底部に対向する取付けプレートの部分とに設
けると、冷却風はロータヨークの筒部内を回転軸の方向
に通り抜けることになる。ファンを、ロータヨークの底
部の外で、該底部の通風口から該ロータヨークの筒部内
を通る冷却風を吸出してロータヨークの筒部の外周に吹
付けるように設けると、このファンはロータヨークの筒
部内を通る冷却風を吸出す作用と、吸出した冷却風をロ
ータヨークの筒部の外周に吹付ける作用との２つの作用
をするようになる。特に、ファンがロータヨークの筒部
内から吸出した冷却風をロータヨークの筒部の外周に吹
付けると、ロータヨークの内周に支持されている永久磁
石が該ロータヨークの筒部を介して冷却されることにな
る。このため永久磁石は、ロータヨークの筒部の内部と
外部との双方から冷却されることになる。それゆえ、永
久磁石の冷却が効率よく行われ、永久磁石の温度上昇に
よる発電出力の低下を防止することができる。When the ventilation holes are provided in the bottom portion of the rotor yoke and the portion of the mounting plate facing the bottom portion in this manner, the cooling air passes through the cylinder portion of the rotor yoke in the direction of the rotation axis. When the fan is provided outside the bottom of the rotor yoke so as to suck the cooling air passing through the inside of the cylindrical portion of the rotor yoke from the ventilation port of the bottom and blow the cooling air to the outer periphery of the cylindrical portion of the rotor yoke, the fan moves inside the cylindrical portion of the rotor yoke. There are two functions, that is, an effect of sucking the cooling air passing therethrough and an effect of blowing the sucked cooling air to the outer circumference of the cylindrical portion of the rotor yoke. In particular, when the fan blows the cooling air sucked from the inside of the rotor yoke onto the outer circumference of the rotor yoke, the permanent magnets supported on the inside of the rotor yoke are cooled via the rotor yoke. Become. Therefore, the permanent magnet is cooled both inside and outside the cylindrical portion of the rotor yoke. Therefore, the permanent magnets are efficiently cooled, and it is possible to prevent the power generation output from decreasing due to the temperature rise of the permanent magnets.
【００１３】本発明にあっては、ファンはファンプレー
トと、このファンプレートに固定された複数枚の羽根部
とで構成されていることが好ましい。また、ファンプレ
ートは、ロータヨークの底部中央に回転軸を利用して固
定される中央板部と、該中央板部の外周からロータヨー
クの底部から離間する方向に立上がる立上がり筒部と、
該立上がり筒部の先端外周からロータヨークの底部の通
風口を所定間隔を隔てて覆って該通風口から排出される
気流の向きを前記底部の外径方向に導く第１の風向き変
更板部と、該風向き変更板部の外径方向の先端で気流が
ロータヨークの筒部外周に供給されるように導く第２の
風向き変更板部と、立上がり筒部の周方向に所定間隔で
開口されて外気を取入れる複数の外気取入れ口とを備え
た構造になっていることが好ましい。さらに、各羽根板
は、ロータヨークの底部に対向する第１の風向き変更板
部の面に、各外気取入れ口からそれぞれ取入れた外気を
それぞれ底部の外径方向に導くように放射状に支持され
ていることが好ましい。In the present invention, the fan is preferably composed of a fan plate and a plurality of blade portions fixed to the fan plate. The fan plate has a central plate portion fixed to the center of the bottom portion of the rotor yoke by using a rotation shaft, and a rising tubular portion that rises from the outer periphery of the central plate portion in a direction away from the bottom portion of the rotor yoke.
A first wind direction changing plate portion that covers the ventilation hole at the bottom of the rotor yoke from the outer circumference of the tip of the rising tubular portion at a predetermined interval and guides the direction of the airflow discharged from the ventilation port to the outer diameter direction of the bottom portion; A second airflow direction changing plate portion that guides the airflow so that the airflow is supplied to the outer circumference of the cylindrical portion of the rotor yoke at the tip of the outer diameter direction of the airflow direction changing plate portion, and a rising airflow portion is opened at a predetermined interval in the circumferential direction of the rising tubular portion to open the outside air. It is preferable to have a structure provided with a plurality of outside air intake ports. Furthermore, each vane plate is radially supported by the surface of the first wind direction changing plate portion facing the bottom portion of the rotor yoke so as to guide the outside air taken in from each outside air intake port to the outside diameter direction of the bottom portion. It is preferable.
【００１４】このように構造になっていると、各羽根板
の回転によりロータヨークの筒部内から底部の通風口を
経て吸出した冷却風に、ロータヨークの底部の外で外部
の空気を新たに加えてロータヨークの筒部の外周に吹付
けることができる。このため本発明のファンは、ロータ
ヨークの筒部内を通る冷却風を吸出す作用と、吸出した
冷却風に外部の空気を新たに加えてロータヨークの筒部
の外周に吹付ける作用との２つの作用をするようにな
る。With this structure, the outside air is newly added to the outside of the bottom portion of the rotor yoke to the cooling air sucked from the inside of the cylindrical portion of the rotor yoke through the ventilation holes at the bottom portion by the rotation of each blade. It can be sprayed on the outer circumference of the cylindrical portion of the rotor yoke. For this reason, the fan of the present invention has two functions, that is, the function of sucking the cooling air passing through the cylindrical portion of the rotor yoke and the function of newly adding the outside air to the sucked cooling air and blowing the cooling air to the outer circumference of the cylindrical portion of the rotor yoke. Will come to
【００１５】特に、ファンによって、ロータヨークの筒
部内から吸出した冷却風に、ロータヨークの底部の外で
外部の空気を新たに加えて温度を下げてロータヨークの
筒部の外周に吹付けると、ロータヨークの内周に支持さ
れている永久磁石が該ロータヨークの筒部を介して効率
よく冷却されることになる。このため永久磁石は、ロー
タヨークの筒部の内部と外部との双方から効率よく冷却
されることになる。それゆえ、永久磁石の冷却が一層効
率よく行われ、永久磁石の温度上昇による発電出力の低
下を防止することができる。In particular, when external air is newly added outside the bottom of the rotor yoke by the fan to cool the cooling air sucked from the inside of the rotor yoke, the temperature is lowered and blown onto the outer periphery of the rotor yoke. The permanent magnets supported on the inner circumference are efficiently cooled via the tubular portion of the rotor yoke. Therefore, the permanent magnet is efficiently cooled both inside and outside the cylindrical portion of the rotor yoke. Therefore, the permanent magnets are cooled more efficiently, and it is possible to prevent the power generation output from decreasing due to the temperature rise of the permanent magnets.
【００１６】また、このファンは、第１の風向き変更板
部と第２の風向き変更板部とを有するファンプレートを
備えているので、これら第１の風向き変更板部と第２の
風向き変更板部により、ロータヨークの筒部内から吸出
された冷却風のロータヨークの筒部の外周への変更を容
易に行うことができる。Further, since this fan is provided with the fan plate having the first wind direction changing plate portion and the second wind direction changing plate portion, the first wind direction changing plate portion and the second wind direction changing plate are provided. By the portion, it is possible to easily change the cooling air sucked out from the cylindrical portion of the rotor yoke to the outer periphery of the cylindrical portion of the rotor yoke.
【００１７】さらにファンプレートには、その中央側の
回転軸に対して同心状に立ち上げた立上がり筒部に、そ
の周方向に所定間隔で複数の外気取入れ口を設けている
ので、ロータヨークの底部の通風口を経てロータヨーク
の筒部内から吸出した冷却風に、ロータヨークの底部の
外で該底部の中央側から外部の空気を加えることができ
て、ロータヨークの筒部の外周に吹付ける段階では双方
の気流が交じり合った状態となり、ロータヨークの筒部
の外周の冷却を良好に行うことができる。また、ファン
プレートの中央側で外気を取り込むと、ロータヨークの
底部の通風口から吸出した冷却風の向きを、容易にロー
タヨークの底部の外径方向に変えることができる。Further, the fan plate is provided with a plurality of outside air intake ports at predetermined intervals in the circumferential direction on the rising cylinder portion which is erected concentrically with respect to the rotation shaft on the center side of the fan plate. Outside air can be added to the cooling air sucked from the inside of the cylindrical portion of the rotor yoke through the ventilation openings of the rotor yoke from the center side of the bottom portion of the rotor yoke, and both can be blown to the outer periphery of the cylindrical portion of the rotor yoke at the stage of blowing. As a result, the air flows of are mixed with each other, and the outer circumference of the cylindrical portion of the rotor yoke can be cooled well. Further, when the outside air is taken in at the center side of the fan plate, the direction of the cooling air sucked from the ventilation port at the bottom of the rotor yoke can be easily changed to the outer diameter direction of the bottom of the rotor yoke.
【００１８】[0018]
【発明の実施の形態】図１及び図２は本発明に係るアウ
ターロータ型磁石発電機における実施の形態の一例を示
したもので、図１は本例のアウターロータ型磁石発電機
における縦断面図、図２は図１のＸ−Ｘ線断面図であ
る。なお、前述した図３と対応する部分には、同一符合
を付けて示している。1 and 2 show an example of an embodiment of an outer rotor type magneto-generator according to the present invention. FIG. 1 is a vertical cross section of the outer rotor type magneto-generator of this example. FIG. 2 and FIG. 2 are sectional views taken along line XX of FIG. The parts corresponding to those in FIG. 3 described above are designated by the same reference numerals.
【００１９】本例のアウターロータ型磁石発電機では、
各通風口１１ｂ，１１ａはロータヨーク４の底部４ｂ
と、この底部４ｂに対向する取付けプレート１０の部分
である底部１０ｂとに設けられている。これら通風口１
１ｂ，１１ａは、永久磁石５とステータコア１とのギャ
ップに対向する位置付近に設けられている。In the outer rotor type magnet generator of this example,
Each of the ventilation ports 11b and 11a has a bottom portion 4b of the rotor yoke 4.
And a bottom portion 10b which is a portion of the mounting plate 10 facing the bottom portion 4b. These vents 1
1b and 11a are provided near positions facing the gap between the permanent magnet 5 and the stator core 1.
【００２０】本例では、ロータヨーク４内のファン１３
の他に、ロータヨーク４の底部４ｂの外に別のファン２
０を設けている。このファン２０は、ファンプレート１
８と、このファンプレート１８に固定された複数枚の羽
根部１９とで構成されている。In this example, the fan 13 in the rotor yoke 4 is
In addition to the above, another fan 2 is provided outside the bottom portion 4b of the rotor yoke 4.
0 is set. This fan 20 is a fan plate 1
8 and a plurality of blades 19 fixed to the fan plate 18.
【００２１】ファンプレート１８は、ロータヨーク４の
底部４ｂ中央に回転軸９を利用して固定される中央板部
１８ａと、該中央板部１８ａの外周からロータヨーク４
の底部４ｂから離間する方向に円錐筒状に立上がる立上
がり筒部１８ｂと、該立上がり筒部１８ｂの先端外周か
らロータヨーク４の底部４ｂの通風口１１ｂを所定間隔
を隔てて覆って該通風口１１ｂから排出される気流の向
きを底部４ｂの外径方向に導く第１の風向き変更板部１
８ｃと、該第１の風向き変更板部１８ｃの外径方向の先
端で気流がロータヨーク４の筒部４ａ外周に供給される
ように導くように湾曲された第２の風向き変更板部１８
ｄと、立上がり筒部１８ｂの周方向に所定間隔で開口さ
れて外気を取入れる複数の外気取入れ口１８ｅとを備え
た構造になっている。The fan plate 18 includes a central plate portion 18a fixed to the center of the bottom portion 4b of the rotor yoke 4 by using the rotary shaft 9, and the rotor yoke 4 from the outer periphery of the central plate portion 18a.
Of the rising cylindrical portion 18b and a ventilation hole 11b of the bottom portion 4b of the rotor yoke 4 which covers the rising cylindrical portion 18b rising in a conical cylindrical shape in a direction away from the bottom portion 4b of the rotor yoke 4 at a predetermined interval. The first wind direction changing plate portion 1 that guides the direction of the air flow discharged from the bottom 4b to the outer diameter direction.
8c and a second wind direction changing plate portion 18 which is curved so as to guide the airflow so that the airflow is supplied to the outer circumference of the cylindrical portion 4a of the rotor yoke 4 at the tip of the first wind direction changing plate portion 18c in the outer diameter direction.
d and a plurality of outside air intake ports 18e opened at predetermined intervals in the circumferential direction of the rising tubular portion 18b to take in outside air.
【００２２】各羽根板１９は、ロータヨーク４の底部４
ｂに対向する第１の風向き変更板部１８ｃの面に、各外
気取入れ口１８ｅからそれぞれ取入れた外気をそれぞれ
底部４ｂの外径方向に導くように放射状に溶接等で支持
されている。Each vane 19 has a bottom portion 4 of the rotor yoke 4.
On the surface of the first wind direction changing plate portion 18c facing b, the outside air taken in from each outside air intake port 18e is radially supported by welding or the like so as to be guided in the outer diameter direction of the bottom portion 4b.
【００２３】このようなアウターロータ型磁石発電機で
は、ロータヨーク４の回転と一緒にファン１３，２０を
回転させると、外部の冷却風が取付けプレート１０の各
通風口１１ａからロータヨーク４の筒部４ａ内に入っ
て、永久磁石５とステータコア１とのギャップと、ステ
ータコア１の各突極１ａ間の隙間を、回転軸９の方向に
通り抜け、ロータヨーク４の底部４ｂの各通風口１１ｂ
からロータヨーク４の外に排出されることになる。これ
により永久磁石５とステータコア１とが冷却されること
になる。In such an outer rotor type magneto-generator, when the fans 13 and 20 are rotated together with the rotation of the rotor yoke 4, external cooling air flows from the ventilation holes 11a of the mounting plate 10 to the cylindrical portion 4a of the rotor yoke 4. After entering the inside, it passes through the gap between the permanent magnet 5 and the stator core 1 and the gap between the salient poles 1a of the stator core 1 in the direction of the rotation shaft 9, and the ventilation holes 11b of the bottom portion 4b of the rotor yoke 4.
Will be discharged to the outside of the rotor yoke 4. As a result, the permanent magnet 5 and the stator core 1 are cooled.
【００２４】ロータヨーク４の底部４ｂの各通風口１１
ｂからロータヨーク４の外に排出された冷却風は、ファ
ンプレート１８の第１の風向き変更板部１８ｃでロータ
ヨーク４の底部４ｂに沿って該底部４ｂの外径方向に向
きを変えることになる。この向きの変更は、ファンプレ
ート１８の中央側の各外気取入れ口１８ｅから取り込ま
れる外気がロータヨーク４の底部４ｂの外径方向に向か
う力を利用して容易に行うことができる。このときロー
タヨーク４の底部４ｂの各通風口１１ｂからロータヨー
ク４の外に排出された冷却風は、ファンプレート１８の
中央側の各外気取入れ口１８ｅから取り込まれた外気と
混じり合って、ロータヨーク４の底部４ｂの外径方向に
向かうことになる。ロータヨーク４の底部４ｂの外径方
向に移動した冷却風は、ファンプレート１８の第２の風
向き変更板部１８ｄでロータヨーク４の筒部４ａの外周
方向に向きが変えられ、ロータヨーク４の筒部４ａの外
周に吹付けられる。これによりロータヨーク４の筒部４
ａがその外側からも冷却され、この筒部４ａを介してそ
の内側に支持されている永久磁石５が冷却されることに
なる。Each ventilation port 11 on the bottom portion 4b of the rotor yoke 4
The cooling air discharged from the rotor b to the outside of the rotor yoke 4 is redirected by the first wind direction changing plate portion 18c of the fan plate 18 along the bottom portion 4b of the rotor yoke 4 in the outer diameter direction of the bottom portion 4b. This change in direction can be easily performed by using the force of the outside air taken in from each outside air intake port 18e on the center side of the fan plate 18 toward the outer diameter direction of the bottom portion 4b of the rotor yoke 4. At this time, the cooling air exhausted to the outside of the rotor yoke 4 from the respective ventilation openings 11b of the bottom portion 4b of the rotor yoke 4 mixes with the outside air taken in from the outside air intake openings 18e on the center side of the fan plate 18, and the cooling air of the rotor yoke 4 is absorbed. It goes toward the outer diameter direction of the bottom portion 4b. The cooling air that has moved in the outer diameter direction of the bottom portion 4b of the rotor yoke 4 is redirected to the outer peripheral direction of the tubular portion 4a of the rotor yoke 4 by the second airflow direction changing plate portion 18d of the fan plate 18, and the tubular portion 4a of the rotor yoke 4 is then rotated. Is sprayed on the outer circumference of. As a result, the cylindrical portion 4 of the rotor yoke 4
a is also cooled from the outside, and the permanent magnet 5 supported on the inside is cooled via the tubular portion 4a.
【００２５】上記のように本例のファン２０は、ロータ
ヨーク４の底部４ｂの外で、該底部４ｂの通風口１１ｂ
から該ロータヨーク４の筒部４ａ内を通る冷却風を吸出
し、この吸出した冷却風に、ロータヨーク４の底部４ｂ
の外で外部の空気を新たに加えてロータヨーク４の筒部
４ａの外周に吹付けることになる。このため該ファン２
０は、ロータヨーク４の筒部４ａ内を通る冷却風を吸出
す作用と、吸出した冷却風に外部の空気を新たに加えて
ロータヨーク４の筒部４ａの外周に吹付ける作用との２
つの作用をするようになる。As described above, the fan 20 of the present embodiment is provided outside the bottom portion 4b of the rotor yoke 4 and at the ventilation port 11b of the bottom portion 4b.
The cooling air passing through the inside of the cylindrical portion 4a of the rotor yoke 4, and the bottom portion 4b of the rotor yoke 4 is absorbed by the sucked cooling air.
Outside air is newly added to the outside of the above to be blown to the outer periphery of the cylindrical portion 4a of the rotor yoke 4. Therefore, the fan 2
0 has a function of sucking the cooling air passing through the cylindrical portion 4a of the rotor yoke 4 and a function of newly adding external air to the sucked cooling air and blowing the cooling air to the outer periphery of the cylindrical portion 4a of the rotor yoke 4.
It comes to have one effect.
【００２６】このようにファン２０によって、ロータヨ
ーク４の筒部４ａ内から吸出した冷却風に、ロータヨー
ク４の底部４ｂの外で、ファンプレート１８の立上がり
筒部１８ｂに設けた複数の外気取入れ口１８ｅから外部
の空気を新たに加えて温度を下げてロータヨーク４の筒
部４ａの外周に吹付けると、ロータヨーク４の内周に支
持されている永久磁石５が該ロータヨーク４の筒部４ａ
を介して効率よく冷却されることになる。このため永久
磁石５は、ロータヨーク４の筒部４ａの内部と外部との
双方から効率よく冷却されることになる。それゆえ、永
久磁石５の冷却が一層効率よく行われ、永久磁石５の温
度上昇による発電出力の低下を防止することができる。As described above, the cooling air sucked from the inside of the cylindrical portion 4a of the rotor yoke 4 by the fan 20 is provided outside the bottom portion 4b of the rotor yoke 4 with a plurality of outside air intake ports 18e provided in the rising cylindrical portion 18b of the fan plate 18. When external air is newly added from the above to lower the temperature and blow it onto the outer circumference of the cylindrical portion 4a of the rotor yoke 4, the permanent magnets 5 supported on the inner circumference of the rotor yoke 4 will move to the cylindrical portion 4a of the rotor yoke 4.
It will be efficiently cooled through. Therefore, the permanent magnet 5 is efficiently cooled both inside and outside the cylindrical portion 4a of the rotor yoke 4. Therefore, the permanent magnets 5 are cooled more efficiently, and it is possible to prevent the power generation output from decreasing due to the temperature rise of the permanent magnets 5.
【００２７】また、このファン２０は、第１の風向き変
更板部１８ｃと第２の風向き変更板部１８ｄとを有する
ファンプレート１８を備えているので、これら第１の風
向き変更板部１８ｃと第２の風向き変更板部１８ｄによ
り、ロータヨーク４の筒部４ａ内から吸出された冷却風
のロータヨーク４の筒部４ａの外周への変更を容易に行
うことができる。Further, since the fan 20 is provided with the fan plate 18 having the first wind direction changing plate portion 18c and the second wind direction changing plate portion 18d, the first wind direction changing plate portion 18c and the first wind direction changing plate portion 18c The second wind direction changing plate portion 18d can easily change the cooling air sucked from the inside of the cylindrical portion 4a of the rotor yoke 4 to the outer periphery of the cylindrical portion 4a of the rotor yoke 4.
【００２８】さらにファンプレート１８には、その中央
側の回転軸９に対して同心状に立ち上げた立上がり筒部
１８ｂに、その周方向に所定間隔で複数の外気取入れ口
１８ｅを設けているので、ロータヨーク４の底部４ｂの
通風口１１ｂを経てロータヨーク４の筒部４ａ内から吸
出した冷却風に、ロータヨーク４の底部４ｂの外で該底
部４ｂの中央側から外部の空気を加えることができて、
ロータヨーク４の筒部４ａの外周に吹付ける段階では双
方の気流が交じり合った状態となり、ロータヨーク４の
筒部４ａの外周の冷却を良好に行うことができる。ま
た、ファンプレート１８の中央側の各外気取入れ口１８
ｅで外気を取り込むと、ロータヨーク４の底部４ｂの通
風口１１ｂから吸出した冷却風の向きを、容易にロータ
ヨーク４の底部４ｂの外径方向に変えることができる。Further, the fan plate 18 is provided with a plurality of outside air intake ports 18e at predetermined intervals in the circumferential direction on a rising cylindrical portion 18b which is erected concentrically with respect to the central rotation shaft 9 thereof. It is possible to add external air from the center side of the bottom portion 4b outside the bottom portion 4b of the rotor yoke 4 to the cooling air sucked out from the inside of the cylindrical portion 4a of the rotor yoke 4 via the ventilation port 11b of the bottom portion 4b of the rotor yoke 4. ,
At the stage of spraying on the outer circumference of the cylindrical portion 4a of the rotor yoke 4, both air flows are in a mixed state, and the outer circumference of the cylindrical portion 4a of the rotor yoke 4 can be cooled well. In addition, the outside air intake ports 18 on the center side of the fan plate 18
When the outside air is taken in by e, the direction of the cooling air sucked from the ventilation port 11b of the bottom portion 4b of the rotor yoke 4 can be easily changed to the outer diameter direction of the bottom portion 4b of the rotor yoke 4.
【００２９】なお、本発明の構造にすると、ロータヨー
ク４の内側のファン１３は必要に応じて省略することが
できる。According to the structure of the present invention, the fan 13 inside the rotor yoke 4 can be omitted if necessary.
【００３０】[0030]
【発明の効果】本発明に係るアウターロータ型磁石発電
機では、各通風口を、ロータヨークの底部と、この底部
に対向する取付けプレートの部分とに設けているので、
冷却風はロータヨークの筒部内を回転軸の方向に通り抜
けることになる。またファンを、ロータヨークの底部の
外で、該底部の通風口から該ロータヨークの筒部内を通
る冷却風を吸出してロータヨークの筒部の外周に吹付け
るように設けているので、このファンはロータヨークの
筒部内を通る冷却風を吸出す作用と、吸出した冷却風を
ロータヨークの筒部の外周に吹付ける作用との２つの作
用をするようになる。特に、このファンはロータヨーク
の筒部内から吸出した冷却風をロータヨークの筒部の外
周に吹付けるので、ロータヨークの内周に支持されてい
る永久磁石が該ロータヨークの筒部を介して冷却される
ことになる。このため永久磁石は、ロータヨークの筒部
の内部と外部との双方から冷却されることになる。それ
ゆえ、永久磁石の冷却が効率よく行われ、永久磁石の温
度上昇による発電出力の低下を防止することができる。In the outer rotor type magnet generator according to the present invention, since each ventilation port is provided in the bottom portion of the rotor yoke and the mounting plate portion facing the bottom portion,
The cooling air passes through the cylindrical portion of the rotor yoke in the direction of the rotation axis. Further, since the fan is provided outside the bottom of the rotor yoke so as to suck the cooling air passing through the inside of the cylindrical portion of the rotor yoke from the ventilation port of the bottom and blow it onto the outer periphery of the cylindrical portion of the rotor yoke, this fan is installed in the rotor yoke. The cooling air passing through the inside of the cylindrical portion is sucked out, and the sucked cooling air is blown onto the outer circumference of the cylindrical portion of the rotor yoke. In particular, this fan blows the cooling air sucked from the inside of the rotor yoke into the outer periphery of the rotor yoke, so that the permanent magnets supported on the inside of the rotor yoke are cooled via the rotor yoke. become. Therefore, the permanent magnet is cooled both inside and outside the cylindrical portion of the rotor yoke. Therefore, the permanent magnets are efficiently cooled, and it is possible to prevent the power generation output from decreasing due to the temperature rise of the permanent magnets.
【図１】本発明に係るアウターロータ型磁石発電機にお
ける実施の形態の一例を示した縦断面図である。FIG. 1 is a vertical cross-sectional view showing an example of an embodiment of an outer rotor type magnet generator according to the present invention.
【図２】図１のＸ−Ｘ線断面図である。FIG. 2 is a sectional view taken along line XX of FIG.
【図３】従来のアウターロータ型磁石発電機の縦断面図
である。FIG. 3 is a vertical sectional view of a conventional outer rotor type magnet generator.
１ ステータコア １ａ 突極 ２ コイル ３ ステータ ４ ロータヨーク ４ａ 筒部 ４ｂ 底部 ５ 永久磁石 ６ ロータ ７ ボス ８ 軸受 ９ 回転軸 １０ 取付けプレート １０ａ 筒部 １０ｂ 底部 １０ｃ取付け鍔部 １１ａ，１１ｂ 通風口 １２ 羽根部 １３ ファン １４ ナット １５ プーリ １６ カラー １７ ネジ １８ ファンプレート １８ａ 中央板部 １８ｂ 立上がり筒部 １８ｃ 第１の風向き変更板部 １８ｄ 第２の風向き変更板部 １８ｅ 外気取入れ口 １９ 羽根板 ２０ ファン 1 Stator core 1a salient pole 2 coils 3 stator 4 rotor yoke 4a tube 4b bottom 5 permanent magnets 6 rotor 7 Boss 8 bearings 9 rotation axis 10 Mounting plate 10a tube part 10b bottom 10c mounting collar 11a, 11b ventilation port 12 wings 13 fans 14 nuts 15 pulley 16 colors 17 screws 18 fan plate 18a Central plate part 18b Standing tube 18c First wind direction changing plate part 18d Second wind direction changing plate part 18e Outside air intake 19 blades 20 fans
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 21/22 H02K 9/06 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02K 21/22 H02K 9/06
Claims (2)
ステータと、該ステータの外周をロータヨークの筒部が
包囲していて該筒部の内周に永久磁石を支持させたロー
タと、前記環状のステータコアを外周に固定している筒
状のボスと、前記ロータヨークの底部の中心に取り付け
られて前記ボスの内周を軸受を介して回転自在に貫通す
る回転軸と、前記ロータヨークの開口端側で前記回転軸
に直交する向きで且つ前記回転軸を回転自在に貫通させ
て前記ボスの端部に固定されている取付けプレートと、
前記ロータヨークの筒部内に前記回転軸の方向に冷却風
が通り抜けるように前記取付けプレートと前記ロータヨ
ークとにそれぞれ設けられた通風口と、前記各通風口を
経て前記ロータヨークの筒部内を前記冷却風が通り抜け
るように前記ロータヨークに設けられたファンとを備え
たアウターロータ型磁石発電機において、 前記各通風口は前記ロータヨークの底部とこの底部に対
向する前記取付けプレートの部分とに設けられ、 前記ファンは前記ロータヨークの底部の外で該底部の前
記通風口から該ロータヨークの筒部内を通る冷却風を吸
出して前記ロータヨークの筒部の外周に吹付けるように
設けられていることを特徴とするアウターロータ型磁石
発電機。1. A stator in which a coil is wound around an annular stator core, a rotor in which the outer periphery of the stator is surrounded by a tubular portion of a rotor yoke, and a permanent magnet is supported on the inner periphery of the tubular portion; A cylindrical boss that fixes the stator core to the outer periphery, a rotary shaft that is attached to the center of the bottom portion of the rotor yoke and rotatably penetrates the inner periphery of the boss via a bearing, and an opening end side of the rotor yoke. A mounting plate fixed to an end of the boss in a direction orthogonal to the rotation axis and rotatably passing through the rotation axis;
Ventilation openings provided in the mounting plate and the rotor yoke so that the cooling air passes through the cylindrical portion of the rotor yoke in the direction of the rotation axis, and the cooling air flows in the cylindrical portion of the rotor yoke through the ventilation holes. In an outer rotor type magnet generator including a fan provided in the rotor yoke so as to pass through, each of the ventilation holes is provided in a bottom portion of the rotor yoke and a portion of the mounting plate facing the bottom portion, and the fan is An outer rotor type characterized in that it is provided outside the bottom of the rotor yoke so that cooling air passing through the inside of the cylindrical portion of the rotor yoke is sucked from the ventilation hole of the bottom and blown onto the outer periphery of the cylindrical portion of the rotor yoke. Magnet generator.
ステータと、該ステータの外周をロータヨークの筒部が
包囲していて該筒部の内周に永久磁石を支持させたロー
タと、前記環状のステータコアを外周に固定している筒
状のボスと、前記ロータヨークの底部の中心に取り付け
られて前記ボスの内周を軸受を介して回転自在に貫通す
る回転軸と、前記ロータヨークの開口端側で前記回転軸
に直交する向きで且つ前記回転軸を回転自在に貫通させ
て前記ボスの端部に固定されている取付けプレートと、
前記ロータヨークの筒部内に前記回転軸の方向に冷却風
が通り抜けるように前記取付けプレートと前記ロータヨ
ークとにそれぞれ設けられた通風口と、前記各通風口を
経て前記ロータヨークの筒部内を前記冷却風が通り抜け
るように前記ロータヨークに設けられたファンとを備え
たアウターロータ型磁石発電機において、 前記各通風口は前記ロータヨークの底部とこの底部に対
向する前記取付けプレートの部分とに設けられ、 前記ファンはファンプレートと、このファンプレートに
固定された複数枚の羽根部とで構成され、 前記ファンプレートは前記ロータヨークの底部中央に前
記回転軸を利用して固定される中央板部と、該中央板部
の外周から前記ロータヨークの底部から離間する方向に
立上がる立上がり筒部と、該立上がり筒部の先端外周か
ら前記ロータヨークの底部の前記通風口を所定間隔を隔
てて覆って該通風口から排出される気流の向きを前記底
部の外径方向に導く第１の風向き変更板部と、該風向き
変更板部の外径方向の先端で前記気流が前記ロータヨー
クの筒部外周に供給されるように導く第２の風向き変更
板部と、前記立上がり筒部の周方向に所定間隔で開口さ
れて外気を取入れる複数の外気取入れ口とを備え、 前記各羽根板は前記ロータヨークの底部に対向する前記
第１の風向き変更板部の面に、前記各外気取入れ口から
それぞれ取入れた外気をそれぞれ前記底部の外径方向に
導くように放射状に支持されていることを特徴とするア
ウターロータ型磁石発電機。2. A stator in which a coil is wound around an annular stator core, a rotor in which the outer periphery of the stator is surrounded by a tubular portion of a rotor yoke, and a permanent magnet is supported on the inner periphery of the tubular portion; A cylindrical boss that fixes the stator core to the outer periphery, a rotary shaft that is attached to the center of the bottom portion of the rotor yoke and rotatably penetrates the inner periphery of the boss via a bearing, and an opening end side of the rotor yoke. A mounting plate fixed to an end of the boss in a direction orthogonal to the rotation axis and rotatably passing through the rotation axis;
Ventilation openings provided in the mounting plate and the rotor yoke so that the cooling air passes through the cylindrical portion of the rotor yoke in the direction of the rotation axis, and the cooling air flows in the cylindrical portion of the rotor yoke through the ventilation holes. In an outer rotor type magnet generator including a fan provided in the rotor yoke so as to pass through, each of the ventilation holes is provided in a bottom portion of the rotor yoke and a portion of the mounting plate facing the bottom portion, and the fan is The fan plate includes a plurality of blades fixed to the fan plate, and the fan plate has a central plate portion fixed to the center of the bottom of the rotor yoke by using the rotating shaft, and the central plate portion. And a tip end of the rising tubular portion that rises from the outer circumference of the rotor yoke in a direction away from the bottom of the rotor yoke. A first airflow direction changing plate portion that covers the airflow opening at the bottom of the rotor yoke at a predetermined distance from the circumference and guides the direction of the airflow discharged from the airflow opening to the outer diameter direction of the bottom portion, and the airflow direction changing plate. A second airflow direction changing plate portion that guides the airflow so that the airflow is supplied to the outer circumference of the cylindrical portion of the rotor yoke at the tip of the outer diameter direction of the rotor portion; A plurality of outside air intakes to be introduced, wherein each of the vanes is provided on the surface of the first wind direction changing plate facing the bottom of the rotor yoke, and the outside air taken in from each of the outside air intakes is outside the bottom. An outer rotor type magneto-generator, which is radially supported so as to be guided in a radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01531299A JP3494056B2 (en) | 1999-01-25 | 1999-01-25 | Outer rotor type magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01531299A JP3494056B2 (en) | 1999-01-25 | 1999-01-25 | Outer rotor type magnet generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000217321A JP2000217321A (en) | 2000-08-04 |
| JP3494056B2 true JP3494056B2 (en) | 2004-02-03 |
Family
ID=11885280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01531299A Expired - Fee Related JP3494056B2 (en) | 1999-01-25 | 1999-01-25 | Outer rotor type magnet generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3494056B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10454328B2 (en) | 2016-03-03 | 2019-10-22 | M-Link Co., Ltd. | Coreless rotating electrical machine including stator comprising cylindrical coil and cooling method therefor |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4113666B2 (en) * | 2000-09-20 | 2008-07-09 | 三菱電機株式会社 | Magnet generator |
| JP2002305857A (en) * | 2001-04-17 | 2002-10-18 | Zexel Valeo Climate Control Corp | Hybrid compressor |
| JP2004260902A (en) * | 2003-02-25 | 2004-09-16 | Kokusan Denki Co Ltd | Magnetogenerator |
| WO2005008860A2 (en) * | 2003-07-10 | 2005-01-27 | Magnetic Applications Inc. | Compact high power alternator |
| CN101127468A (en) * | 2007-07-11 | 2008-02-20 | 无锡开普动力有限公司 | A cooling fan structure for permanent magnetic generator |
| US10651702B2 (en) | 2014-09-04 | 2020-05-12 | Coreless Motor Co., Ltd. | Coreless rotating electrical machine with stator including cylindrical coil and cooling method therefor |
| US10965193B2 (en) * | 2016-08-05 | 2021-03-30 | Nidec Corporation | Motor with shaft flange through-hole filled with resin |
| US11286956B2 (en) * | 2016-08-05 | 2022-03-29 | Nidec Corporation | Motor with rotor including angled cooling outlet and a bracket including cooling inlet |
| JP6579522B2 (en) * | 2017-03-27 | 2019-09-25 | 株式会社エムリンク | Brushless rotating electrical machine including a stator having a coreless cylindrical coil and a brushless rotating electrical machine including a stator having a coreless cylindrical coil mounted with the cooling assisting tool |
| WO2020202390A1 (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Outer rotor-type motor |
| CN112953043A (en) * | 2021-04-02 | 2021-06-11 | 刘建 | Stator module, rotor assembly and central disc shaft core dual-rotor motor |
-
1999
- 1999-01-25 JP JP01531299A patent/JP3494056B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10454328B2 (en) | 2016-03-03 | 2019-10-22 | M-Link Co., Ltd. | Coreless rotating electrical machine including stator comprising cylindrical coil and cooling method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000217321A (en) | 2000-08-04 |
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