JP4643300B2 - Rotating electric machine - Google Patents

Rotating electric machine Download PDF

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Publication number
JP4643300B2
JP4643300B2 JP2005043689A JP2005043689A JP4643300B2 JP 4643300 B2 JP4643300 B2 JP 4643300B2 JP 2005043689 A JP2005043689 A JP 2005043689A JP 2005043689 A JP2005043689 A JP 2005043689A JP 4643300 B2 JP4643300 B2 JP 4643300B2
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hollow shaft
rotating electrical
electrical machine
electric machine
cylindrical body
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JP2006230154A (en
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真琴 松下
圭史 尾崎
忠 松浦
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Toshiba Corp
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Toshiba Corp
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本発明は、エレベータの巻上機等に使用されるアウターロータ形の回転電機に関する。   The present invention relates to an outer rotor type rotating electrical machine used for an elevator hoisting machine and the like.

エレベータの巻上機等に使用される従来のアウターロータ形の回転電機は、図１５に示すように、円管状の中空軸５に固着され巻線３を有する固定子鉄心２と、中空軸５に軸受６，７を介して回転自在に取り付けられた円板状のブラケット９，１０と、ブラケット９，１０の外縁に固着され固定子鉄心２の外周を覆う円筒状の回転子胴４とを備えている。回転子胴４の内側には磁極４ａが取り付けられ、磁極４ａの内周面と固定子鉄心２の外周面との間には空隙８が存在する。巻上機として使用する場合には、回転子胴４の外周面にトラクションワイヤが巻回され、回転子胴４の回転によってトラクションワイヤを巻取りあるいは延伸させる。   As shown in FIG. 15, a conventional outer rotor type rotating electrical machine used for an elevator hoisting machine, etc. has a stator core 2 fixed to a circular hollow shaft 5 and having a winding 3, and a hollow shaft 5 Disk-shaped brackets 9 and 10 that are rotatably attached to the bearings 6 and 7, and a cylindrical rotor body 4 that is fixed to the outer edges of the brackets 9 and 10 and covers the outer periphery of the stator core 2. I have. A magnetic pole 4 a is attached to the inside of the rotor body 4, and a gap 8 exists between the inner peripheral surface of the magnetic pole 4 a and the outer peripheral surface of the stator core 2. When used as a hoisting machine, a traction wire is wound around the outer peripheral surface of the rotor body 4, and the traction wire is wound or stretched by the rotation of the rotor body 4.

図１５に示した構成の従来のアウターロータ形の回転電機は、稼動されることによって固定子鉄心２、巻線３、磁極４ａおよび回転子胴４が発熱する。固定子鉄心２と巻線３の発熱は主に中空軸５を介して冷却されるが、冷却性が十分でなく、従来の回転電機は形格の割に出力が小さいという問題がある。下記特許文献１には、固定子鉄心や巻線の冷却性を向上するために中空軸に設けた孔から機内に冷却風を取り込む構成とした回転電機が開示されている。しかしこの構成は機内が汚損されるという問題がある。
特開平５−３４４６８０号公報 When the conventional outer rotor type rotating electrical machine having the configuration shown in FIG. 15 is operated, the stator core 2, the winding 3, the magnetic pole 4a and the rotor body 4 generate heat. The heat generated in the stator core 2 and the winding 3 is cooled mainly through the hollow shaft 5, but the cooling performance is not sufficient, and the conventional rotating electric machine has a problem that the output is small for its size. Patent Document 1 below discloses a rotating electrical machine configured to take cooling air into a machine from a hole provided in a hollow shaft in order to improve the cooling performance of a stator core and windings. However, this configuration has a problem that the inside of the aircraft is fouled.
JP-A-5-344680

そこで本発明は、機内を汚損することなく冷却性が良く大きい出力の得られるアウターロータ形の回転電機を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide an outer rotor type rotating electrical machine that has good cooling performance and high output without fouling the inside of the machine.

上記課題を解決するために、本発明の請求項１の発明は、中空軸の周囲に固着された固定子と、前記中空軸に支持され前記固定子を囲繞して回転する回転子とを備えたアウターロータ形の回転電機において、前記中空軸の内側の前記固定子に対応する位置にのみ冷却フィンを備えている構成とする。 In order to solve the above-mentioned problem, the invention of claim 1 of the present invention comprises a stator fixed around a hollow shaft, and a rotor supported by the hollow shaft and rotating around the stator. In the outer rotor type rotating electrical machine, the cooling fin is provided only at a position corresponding to the stator inside the hollow shaft.

本発明によれば、機内を汚損することなく冷却性が良く大きい出力の得られるアウターロータ形の回転電機を提供することができる。   According to the present invention, it is possible to provide an outer rotor type rotating electrical machine that has good cooling performance and high output without fouling the inside of the machine.

以下、本発明の第１乃至第１４の実施の形態を図面を参照して説明する。
（第１の実施の形態）
本発明の第１の実施の形態の回転電機は、図１に示すように、円管状の中空軸５に固着され巻線３を有する固定子鉄心２と、中空軸５に軸受６，７を介して回転自在に取り付けられた円板状のブラケット９，１０と、ブラケット９，１０の外縁に固着され内側に磁極４ａを備えて固定子鉄心２の外周を覆う円筒状の回転子胴４と、中空軸５の端部にフランジ１２を介して取り付けられたブロア１１とを備えている。固定子鉄心２と巻線３が固定子を構成し、ブラケット９，１０と回転子胴４と磁極４ａが回転子を構成する。ブロア１１はアキシャルファンからなり、中空軸５内に冷却風１３を通流させる。 Hereinafter, first to fourteenth embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the rotary electric machine according to the first embodiment of the present invention includes a stator core 2 having a winding 3 fixed to a circular hollow shaft 5, and bearings 6 and 7 on the hollow shaft 5. Disk-shaped brackets 9 and 10 that are rotatably attached to each other, and a cylindrical rotor body 4 that is fixed to the outer edges of the brackets 9 and 10 and that has a magnetic pole 4a on the inside and covers the outer periphery of the stator core 2. And a blower 11 attached to the end of the hollow shaft 5 via a flange 12. The stator core 2 and the winding 3 constitute a stator, and the brackets 9 and 10, the rotor body 4 and the magnetic pole 4a constitute a rotor. The blower 11 is composed of an axial fan, and allows the cooling air 13 to flow through the hollow shaft 5.

本実施の形態の回転電機は、冷却風１３によって中空軸５が十分に冷却され、中空軸５に発熱を伝達する固定子鉄心２および巻線３、あるいはさらに磁極４ａおよび回転子胴４の冷却性が向上する。したがって機内を汚損することなく冷却性が良く大きい出力の得られるアウターロータ形の回転電機を提供することができる。   In the rotating electrical machine of the present embodiment, the hollow shaft 5 is sufficiently cooled by the cooling air 13, and the stator core 2 and the winding 3 that transmit heat to the hollow shaft 5, or the magnetic pole 4 a and the rotor body 4 are cooled. Improves. Therefore, it is possible to provide an outer rotor type rotating electrical machine that has good cooling performance and high output without fouling the inside of the machine.

なお図１はブロア１１によって形成される冷却風１３が中空軸５内に押し込まれる構成を示したが、冷却風１３は中空軸５から吸い出される構成であってもよい。またブロア１１を中空軸５の両端に設けた構成であってもよい。   Although FIG. 1 shows a configuration in which the cooling air 13 formed by the blower 11 is pushed into the hollow shaft 5, the cooling air 13 may be sucked out of the hollow shaft 5. Moreover, the structure which provided the blower 11 in the both ends of the hollow shaft 5 may be sufficient.

（第２の実施の形態）
本実施の形態の回転電機は、図２に示すように、中空軸５の端部に取り付けられたフランジ１２を介して中空軸５内にブロア１１が設けられている構成である。その他の構成は図１に示した第１の実施の形態と同じである。 (Second Embodiment)
As shown in FIG. 2, the rotating electrical machine of the present embodiment has a configuration in which a blower 11 is provided in the hollow shaft 5 via a flange 12 attached to an end of the hollow shaft 5. Other configurations are the same as those of the first embodiment shown in FIG.

本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、軸方向サイズを増大させることなく冷却性を改善したアウターロータ形の回転電機を提供することができる。   The rotating electrical machine of the present embodiment provides an outer rotor type rotating electrical machine that has the same effect as the rotating electrical machine of the first embodiment and that has improved cooling performance without increasing the axial size. Can do.

（第３の実施の形態）
本実施の形態の回転電機は、図３に示すように、中空軸５のブロア１１を設けた軸端の反対側の軸端にブラケット９の外縁まで覆う浅皿状の導風カバー１９を取り付けた構成である。その他の構成は図１に示した第１の実施の形態と同じである。 (Third embodiment)
As shown in FIG. 3, the rotating electrical machine of the present embodiment has a shallow dish-shaped air guide cover 19 that covers the outer edge of the bracket 9 on the shaft end opposite to the shaft end on which the blower 11 of the hollow shaft 5 is provided. It is a configuration. Other configurations are the same as those of the first embodiment shown in FIG.

本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、ブロア１１によって中空軸５に送り込まれた冷却風１３によってブラケット９と回転子胴４を冷却し、さらに冷却性の良い回転電機が得られる。   The rotating electrical machine of the present embodiment produces the same effects as the rotating electrical machine of the first embodiment, and cools the bracket 9 and the rotor body 4 by the cooling air 13 sent to the hollow shaft 5 by the blower 11. In addition, a rotating electrical machine with better cooling performance can be obtained.

（第４の実施の形態）
本実施の形態の回転電機は、図４に示すように、中空軸５の端部に取り付けられたフランジ１２に風洞１２ａを介してラジアルファン１１ａが取り付けられている。その他の構成は図１に示した第１の実施の形態と同じである。 (Fourth embodiment)
In the rotating electrical machine of the present embodiment, as shown in FIG. 4, a radial fan 11a is attached to a flange 12 attached to an end of the hollow shaft 5 via a wind tunnel 12a. Other configurations are the same as those of the first embodiment shown in FIG.

本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、設置場所の制約によってアキシャルファンでは十分な冷却風１３が得られない場合に十分な吸排気スペースを確保することができる。   The rotating electrical machine of the present embodiment produces the same effects as the rotating electrical machine of the first embodiment, and sufficient intake / exhaust air when the axial fan cannot provide sufficient cooling air 13 due to installation location restrictions. Space can be secured.

（第５の実施の形態）
本実施の形態の回転電機は、図５に示すように、中空軸５の軸端にＬ字形の架台１４を取り付け、架台１４に脚１５を介してブロア１１を載置している。その他の構成は図１に示した第１の実施の形態と同じである。 (Fifth embodiment)
As shown in FIG. 5, in the rotating electrical machine of the present embodiment, an L-shaped gantry 14 is attached to the shaft end of the hollow shaft 5, and the blower 11 is placed on the gantry 14 via legs 15. Other configurations are the same as those of the first embodiment shown in FIG.

本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、ブロア１１の重量を架台１４で受けているので、低振動のアウターロータ形の回転電機が得られる。   The rotating electrical machine according to the present embodiment produces the same effects as the rotating electrical machine according to the first embodiment. In addition, since the weight of the blower 11 is received by the gantry 14, a low vibration outer rotor type rotating electrical machine is provided. can get.

（第６の実施の形態）
本実施の形態の回転電機は図６に示すように、中空軸５の軸端外方に独立して設けられた架台１４ａと、架台１４ａの上に脚１５を介して載置されたブロア１１を備えている。その他の構成は図１に示した第１の実施の形態と同じである。
本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、回転電機の稼動状況によってブロア１１の使用を選択することができる。 (Sixth embodiment)
As shown in FIG. 6, the rotating electrical machine of the present embodiment includes a gantry 14 a that is independently provided outside the shaft end of the hollow shaft 5, and a blower 11 that is placed on the gantry 14 a via legs 15. It has. Other configurations are the same as those of the first embodiment shown in FIG.
The rotating electrical machine of the present embodiment produces the same effect as the rotating electrical machine of the first embodiment, and can select the use of the blower 11 depending on the operating status of the rotating electrical machine.

（第７の実施の形態）
本実施の形態の回転電機は図７に示すように、中空軸５の軸端外方に設けられた架台１４ａと、架台１４ａの上に脚１５を介して載置されたブロア１１と、中空軸５の両端を支持するスタンド１６，１７、および架台１４ａとスタンド１６，１７を載置するベッド１８を備えている。その他の構成は図１に示した第１の実施の形態と同じである。 (Seventh embodiment)
As shown in FIG. 7, the rotating electrical machine of the present embodiment includes a gantry 14 a provided outside the shaft end of the hollow shaft 5, a blower 11 placed on the gantry 14 a via legs 15, and a hollow Stands 16 and 17 that support both ends of the shaft 5 and a bed 18 on which the gantry 14a and the stands 16 and 17 are placed are provided. Other configurations are the same as those of the first embodiment shown in FIG.

本実施の形態の回転電機は第１の実施の形態の回転電機と同様の作用効果を生じるほかに、低振動の回転電機が得られるとともに回転電機の稼動状況によってブロア１１の使用を選択することができる。   The rotating electrical machine according to the present embodiment produces the same effect as the rotating electrical machine according to the first embodiment. In addition, a low-vibration rotating electrical machine can be obtained and the use of the blower 11 can be selected according to the operating status of the rotating electrical machine. Can do.

（第８の実施の形態）
本実施の形態の回転電機は、図８に示すように、中空軸５の両端部を支持するスタンド１６，１７を載置するベッド１８上において回転子胴４の側方にブロア１１を設けた構成である。
本実施の形態によれば、回転子胴４、磁極４ａ、ブラケット９，１０、および軸受６，７が特によく冷却されるとともに、低振動のアウターロータ形の回転電機が得られる。 (Eighth embodiment)
As shown in FIG. 8, the rotating electrical machine of the present embodiment is provided with a blower 11 on the side of the rotor body 4 on a bed 18 on which stands 16 and 17 that support both ends of the hollow shaft 5 are placed. It is a configuration.
According to the present embodiment, the rotor body 4, the magnetic pole 4a, the brackets 9 and 10, and the bearings 6 and 7 are particularly well cooled, and a low vibration outer rotor type rotating electrical machine is obtained.

（第９の実施の形態）
本実施の形態の回転電機は図９に示すように、中空軸５の両端部を支持するスタンド１６，１７を載置するベッド１８上において回転子胴４の外側を覆って設けたカバー２０の頂部にブロア１１を設けた構成である。
本実施の形態によれば、回転子胴４の全周および全ての磁極４ａがよく冷却されるアウターロータ形の回転電機が得られる。 (Ninth embodiment)
As shown in FIG. 9, the rotating electrical machine according to the present embodiment includes a cover 20 that covers the outside of the rotor body 4 on a bed 18 on which stands 16 and 17 that support both ends of the hollow shaft 5 are placed. The blower 11 is provided at the top.
According to the present embodiment, an outer rotor type rotating electrical machine in which the entire circumference of the rotor body 4 and all the magnetic poles 4a are well cooled is obtained.

（第１０の実施の形態）
本実施の形態の回転電機は図１０に示すように、中空軸５の中の固定子鉄心２に対応する位置に長方形板状の複数のフィン２１を軸方向に沿って設けた構成である。
本実施の形態の回転電機は、中空軸５に発熱を伝達する固定子鉄心２および巻線３、あるいはさらに磁極４ａおよび回転子胴４の冷却性が向上する。したがって機内を汚損することなく冷却性が良く大きい出力の得られるアウターロータ形の回転電機を提供することができる。 (Tenth embodiment)
As shown in FIG. 10, the rotating electrical machine of the present embodiment has a configuration in which a plurality of rectangular plate-like fins 21 are provided along the axial direction at positions corresponding to the stator core 2 in the hollow shaft 5.
In the rotating electrical machine of the present embodiment, the cooling performance of the stator core 2 and the winding 3 that transmit heat to the hollow shaft 5, or the magnetic pole 4a and the rotor body 4 is improved. Therefore, it is possible to provide an outer rotor type rotating electrical machine that has good cooling performance and high output without fouling the inside of the machine.

（第１１の実施の形態）
本実施の形態の回転電機は、図１１に示すように、内側に複数のフィン２１を有する筒状体２２を中空軸５の内部の固定子鉄心２に対応する位置に取り付けた構成である。
本実施の形態の回転電機は第１０の実施の形態の回転電機と同様の作用効果を生じるほかに、フィン２１の製作性と取付作業性が向上する。またフィン２１と筒状体２２をアルミニウム等の伝熱性の良い材料で構成することができ、冷却性が向上する。 (Eleventh embodiment)
As shown in FIG. 11, the rotating electrical machine of the present embodiment has a configuration in which a cylindrical body 22 having a plurality of fins 21 on the inside is attached to a position corresponding to the stator core 2 inside the hollow shaft 5.
The rotating electrical machine according to the present embodiment produces the same effects as the rotating electrical machine according to the tenth embodiment, and improves the manufacturability and mounting workability of the fins 21. Further, the fin 21 and the cylindrical body 22 can be made of a material having good heat conductivity such as aluminum, so that the cooling performance is improved.

（第１２の実施の形態）
本実施の形態の回転電機は、図１２に示すように、内側に複数のフィン２１を有する筒状体２２を中空軸５の内側の固定子鉄心２に対応する位置に嵌着し、ボルト２３で固定した構成である。 (Twelfth embodiment)
As shown in FIG. 12, the rotating electrical machine of the present embodiment fits a cylindrical body 22 having a plurality of fins 21 on the inner side thereof at a position corresponding to the stator core 2 on the inner side of the hollow shaft 5. This is a fixed configuration.

本実施の形態の回転電機は第１１の実施の形態の回転電機と同様の作用効果を生じるほかに、中空軸５と筒状体２２の間の伝熱性が向上するとともにフィン２１および筒状体２２の脱落を防ぐことができる。   The rotating electrical machine according to the present embodiment produces the same effects as the rotating electrical machine according to the eleventh embodiment. In addition, the heat transfer between the hollow shaft 5 and the cylindrical body 22 is improved and the fins 21 and the cylindrical body are improved. 22 can be prevented from falling off.

（第１３の実施の形態）
本実施の形態の回転電機は、図１３に示すように、内側に複数のフィン２１を有する筒状体２２を中空軸５の内側の固定子鉄心２に対応する位置に嵌着し、筒状体２２と中空軸５の間の隙間に合成樹脂等からなる伝熱材２４を充填した構成である。 (Thirteenth embodiment)
As shown in FIG. 13, the rotating electrical machine according to the present embodiment has a cylindrical body 22 having a plurality of fins 21 on the inner side thereof fitted at a position corresponding to the stator core 2 on the inner side of the hollow shaft 5. The gap between the body 22 and the hollow shaft 5 is filled with a heat transfer material 24 made of synthetic resin or the like.

本実施の形態の回転電機は第１１の実施の形態の回転電機と同様の作用効果を生じるほかに、中空軸５と筒状体２２の間の伝熱性が向上するとともにフィン２１および筒状体２２の脱落を防ぐことができる。   The rotating electrical machine according to the present embodiment produces the same effects as the rotating electrical machine according to the eleventh embodiment. In addition, the heat transfer between the hollow shaft 5 and the cylindrical body 22 is improved and the fins 21 and the cylindrical body are improved. 22 can be prevented from falling off.

（第１４の実施の形態）
本実施の形態の回転電機は、図１４に示すように、内側に複数のフィン２１を有する２個の弧状体２５を中空軸５の内側の固定子鉄心２に対応する位置に嵌着し、ターンバックルのような拡張部材２６を用いて中空軸５の内壁に圧接した構成である。 (Fourteenth embodiment)
In the rotating electrical machine of the present embodiment, as shown in FIG. 14, two arcuate bodies 25 having a plurality of fins 21 on the inside are fitted at positions corresponding to the stator core 2 inside the hollow shaft 5, In this configuration, the expansion member 26 such as a turnbuckle is used to press-contact the inner wall of the hollow shaft 5.

本実施の形態の回転電機は第１１の実施の形態の回転電機と同様の作用効果を生じるほかに、中空軸５と筒状体２２の間の伝熱性が向上するとともにフィン２１および筒状体２２の脱落を防ぐことができる。   The rotating electrical machine according to the present embodiment produces the same effects as the rotating electrical machine according to the eleventh embodiment. In addition, the heat transfer between the hollow shaft 5 and the cylindrical body 22 is improved and the fins 21 and the cylindrical body are improved. 22 can be prevented from falling off.

以上、本発明の１４の実施の形態を説明したが、第１乃至第９のいずれかの実施の形態の構成と第１０乃至第１４のいずれかの実施の形態の構成を組合せた実施の形態も可能である。   Although the fourteenth embodiment of the present invention has been described above, an embodiment in which the configuration of any of the first to ninth embodiments and the configuration of any of the tenth to fourteenth embodiments are combined. Is also possible.

本発明の第１の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the standing cross-section upper half and front lower half of the rotary electric machine of the 1st Embodiment of this invention. 本発明の第２の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the standing cross-section upper half and front lower half of the rotary electric machine of the 2nd Embodiment of this invention. 本発明の第３の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the standing cross-section upper half and front lower half of the rotary electric machine of the 3rd Embodiment of this invention. 本発明の第４の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the vertical cross-section upper half and front lower half of the rotary electric machine of the 4th Embodiment of this invention. 本発明の第５の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the vertical cross-section upper half and front lower half of the rotary electric machine of the 5th Embodiment of this invention. 本発明の第６の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the standing cross-section upper half and front lower half of the rotary electric machine of the 6th Embodiment of this invention. 本発明の第７の実施の形態の回転電機の立断面上半および正面下半を示す図。The figure which shows the standing cross-section upper half and front lower half of the rotary electric machine of the 7th Embodiment of this invention. 本発明の第８の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）の右側面図。The rotary electric machine of the 8th Embodiment of this invention is shown, (a) is a figure which shows a vertical cross-section upper half and a front lower half, (b) is a right view of (a). 本発明の第９の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）の右側面図。The rotary electric machine of the 9th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is a right view of (a). 本発明の第１０の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）のｂ−ｂ線に沿う断面図。The rotary electric machine of the 10th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is sectional drawing which follows the bb line of (a). 本発明の第１１の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）のｂ−ｂ線に沿う断面図。The rotary electric machine of the 11th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is sectional drawing which follows the bb line of (a). 本発明の第１２の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）のｂ−ｂ線に沿う断面図。The rotary electric machine of the 12th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is sectional drawing which follows the bb line of (a). 本発明の第１３の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）のｂ−ｂ線に沿う断面図。The rotary electric machine of the 13th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is sectional drawing which follows the bb line of (a). 本発明の第１４の実施の形態の回転電機を示し、（ａ）は立断面上半および正面下半を示す図、（ｂ）は（ａ）のｂ−ｂ線に沿う断面図。The rotary electric machine of the 14th Embodiment of this invention is shown, (a) is a figure which shows a standing cross-section upper half and a front lower half, (b) is sectional drawing which follows the bb line of (a). 従来の回転電機の立断面上半および正面下半を示す図。The figure which shows the vertical section upper half and front lower half of the conventional rotary electric machine.

符号の説明Explanation of symbols

２…固定子鉄心、３…巻線、４…回転子胴、４ａ…磁極、５…中空軸、６，７…軸受、８…空隙、９，１０…ブラケット、１１…ブロア、１１ａ…ラジアルファン、１２…フランジ、１２ａ…風洞、１３…冷却風、１４，１４ａ…架台、１５…脚、１６，１７…スタンド、１８…ベッド、１９…導風カバー、２０…カバー、２１…フィン、２２…筒状体、２３…ボルト、２４…伝熱材、２５…弧状体、２６…拡張部材。

2 ... Stator core, 3 ... Winding, 4 ... Rotor body, 4a ... Magnetic pole, 5 ... Hollow shaft, 6, 7 ... Bearing, 8 ... Air gap, 9, 10 ... Bracket, 11 ... Blower, 11a ... Radial fan 12 ... Flange, 12a ... Wind tunnel, 13 ... Cooling air, 14, 14a ... Mount, 15 ... Leg, 16, 17 ... Stand, 18 ... Bed, 19 ... Wind guide cover, 20 ... Cover, 21 ... Fin, 22 ... Cylindrical body, 23 ... bolt, 24 ... heat transfer material, 25 ... arc-shaped body, 26 ... expansion member.

Claims (6)

中空軸の周囲に固着された固定子と、前記中空軸に支持され前記固定子を囲繞して回転する回転子とを備えたアウターロータ形の回転電機において、前記中空軸の内側の前記固定子に対応する位置にのみ冷却フィンを備えていることを特徴とする回転電機。 In an outer rotor type rotary electric machine comprising a stator fixed around a hollow shaft and a rotor supported by the hollow shaft and rotating around the stator, the stator inside the hollow shaft A rotating electrical machine comprising a cooling fin only at a position corresponding to. 前記冷却フィンは、前記中空軸の内側に嵌着される筒状体の内側に形成されていることを特徴とする請求項１記載の回転電機。 The cooling fins, the rotary electric machine according to claim 1, characterized in that it is formed inside the cylindrical body is fitted inside the hollow shaft. 前記筒状体は前記中空軸にボルトによって固着されていることを特徴とする請求項２記載の回転電機。 The rotating electrical machine according to claim 2, wherein the cylindrical body is fixed to the hollow shaft with a bolt. 前記筒状体の外周面と前記中空軸の内壁との間に伝熱材が充填されていることを特徴とする請求項２記載の回転電機。 The rotating electrical machine according to claim 2 , wherein a heat transfer material is filled between an outer peripheral surface of the cylindrical body and an inner wall of the hollow shaft. 前記冷却フィンは弧状体の内側に形成されており、前記弧状体の複数が拡張部材によって中空軸内壁に押し付けられて前記筒状体を形成していることを特徴とする請求項３記載の回転電機。 4. The rotation according to claim 3, wherein the cooling fin is formed inside the arcuate body, and a plurality of the arcuate bodies are pressed against the inner wall of the hollow shaft by an expansion member to form the cylindrical body. Electric. 前記中空軸の端部に当該中空軸内に冷却風を流通させるラジアルファンを設け、当該ラジアルファンの回転中心軸を前記中空軸の中心線と直交させたことを特徴とする請求項１記載の回転電機。The radial fan which distribute | circulates cooling air in the said hollow shaft is provided in the edge part of the said hollow shaft, The rotation center axis | shaft of the said radial fan was made orthogonal to the centerline of the said hollow shaft. Rotating electric machine.
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