JP2007189849A - Rotor of salient pole electric rotating machine - Google Patents

Rotor of salient pole electric rotating machine Download PDF

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JP2007189849A
JP2007189849A JP2006007004A JP2006007004A JP2007189849A JP 2007189849 A JP2007189849 A JP 2007189849A JP 2006007004 A JP2006007004 A JP 2006007004A JP 2006007004 A JP2006007004 A JP 2006007004A JP 2007189849 A JP2007189849 A JP 2007189849A
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salient pole
rotor
coil
salient
rotor shaft
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Japanese (ja)
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Hiroyuki Hayashi
弘幸 林
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor of a salient pole electric rotating machine in which a temperature rise in the axial direction center portion of a salient pole coil is suppressed and the temperature difference in the salient pole coil can be reduced while reducing the salient pole coil in size and prolonging the lifetime. <P>SOLUTION: A rotor core 2 having a plurality of radially extending salient pole core parts 2a is fitted to a rotor shaft 1, and the salient pole core parts 2a are wound with the salient pole coil 3 respectively. A ventilation passage 10 extending in the axial direction of the rotor shaft 1 is constituted and a plurality of pressing members 7 pressing each side surface of the adjacent salient pole coils 3 are provided on the rotor shaft 1 side between the adjacent salient pole coils 3, 3. An inclined part 2c inclined in the direction enlarging an opening area is provided at the inlet part of the ventilation passage 10 of the rotor core 2. The inclined part 2c facilitates flowing of air into the ventilation passage 10 to increase the air quantity in the ventilation passage 10 to increase the cooling air quantity to be discharged to outside between the salient pole coils 3, 3 and between the pressing members 7, 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、突極形回転電機の回転子に係り、特に突磁極コイルの冷却性を改善した突極形回転電機の回転子に関する。   The present invention relates to a rotor of a salient pole type rotating electrical machine, and more particularly to a rotor of a salient pole type rotating electrical machine with improved cooling performance of salient pole coils.

従来の突極形回転電機の回転子として図３ないし図５に示すものが知られている。図３ないし図５は、従来の４極タイプにおける突極形回転電機の回転子の主要部を示すもので、図３は回転子の主要部を示す断面図、図４は図３のIV−IV線に沿って切断して平面状に展開した展開断面図、図５は回転子の主要部を示す斜視図である。   As a rotor of a conventional salient pole type rotating electric machine, those shown in FIGS. 3 to 5 are known. 3 to 5 show a main part of a rotor of a salient pole type rotating electrical machine in a conventional four-pole type. FIG. 3 is a sectional view showing the main part of the rotor, and FIG. FIG. 5 is a developed sectional view taken along the line IV and developed in a plane, and FIG. 5 is a perspective view showing the main part of the rotor.

図３ないし図５において、回転子軸１には回転子鉄心２が装着されている。この回転子鉄心２には、放射方向に延びる４個の突磁極鉄心部２ａが形成されていて、各突磁極鉄心部２ａには突磁極コイル３が巻装されている。各突磁極コイル３は、ほぼ長方形のコイル導体と、そのコイル導体よりもやや小形で相似形の長方形状の導体間絶縁材とが互い違いに配列され多数が積層され、両者間の絶縁がなされている。各突磁極コイル３は、その軸方向両側に設けられた絶縁カラー４，４を介して突磁極シュー５と回転子鉄心２の段部２ｂに挟まれて固定されている。突磁極シュー５は、突磁極コイル３を巻装した後に突磁極鉄心部２ａに押さえボルト６により取り付けられている。   3 to 5, a rotor core 2 is mounted on the rotor shaft 1. The rotor core 2 is formed with four salient pole core portions 2a extending in the radial direction, and salient pole coils 3 are wound around the salient pole core portions 2a. Each salient-pole coil 3 has a substantially rectangular coil conductor and rectangular inter-conductor insulating materials that are slightly smaller than the coil conductor and arranged in a staggered manner, and a large number of them are laminated to insulate them. Yes. Each salient pole coil 3 is sandwiched and fixed between the salient pole shoe 5 and the step 2b of the rotor core 2 via insulating collars 4 and 4 provided on both sides in the axial direction. The salient pole shoe 5 is attached to the salient pole iron core portion 2a by a holding bolt 6 after the salient pole coil 3 is wound.

隣合う突磁極コイル３，３の対向する側面には、Ｌ字状をなす複数個のコイル押さえ部材７が配設されている。これらコイル押さえ部材７は、回転子軸１の軸方向に沿って間隔をおいて設けられ、それぞれ回転子鉄心２および回転子軸１に螺合された植込みボルト８および植込みボルト８に螺合するナット９により、突磁極コイル３，３の側面を押さえつけるようにして回転子鉄心２および回転子軸１に取り付けられている。   A plurality of L-shaped coil pressing members 7 are disposed on the opposing side surfaces of the adjacent salient pole coils 3 and 3. These coil pressing members 7 are provided at intervals along the axial direction of the rotor shaft 1 and screwed into the rotor core 2 and the stud bolt 8 and the stud bolt 8 screwed to the rotor shaft 1, respectively. The nut 9 is attached to the rotor core 2 and the rotor shaft 1 so as to press the side surfaces of the salient magnetic pole coils 3 and 3.

このコイル押さえ部材７は、回転子が極めて高速で回転することにより突磁極コイル３の導体および導体間絶縁材に強い遠心力が働くことから、この遠心力によって突磁極コイル３内の導体および導体間絶縁材が移動したり、飛び出したりするのを防止するために設けられている。図５では、コイル押さえ部材７は、二ヶ所に配置されている状態を示している。   The coil holding member 7 has a strong centrifugal force acting on the conductor of the salient pole coil 3 and the inter-conductor insulating material when the rotor rotates at an extremely high speed. Therefore, the conductor and conductor in the salient pole coil 3 are caused by this centrifugal force. It is provided to prevent the insulating material from moving or jumping out. In FIG. 5, the coil pressing member 7 has shown the state arrange | positioned at two places.

隣合う突磁極コイル３，３間の回転子軸１側には、回転子軸１の軸方向に沿って延びる通風路１０が構成されている。この通風路１０は、回転子鉄心２の軸方向両側に開口しており、その両開口の入口部からそれぞれ冷却風が強制的に送り込まれている。   A ventilation path 10 extending along the axial direction of the rotor shaft 1 is formed on the rotor shaft 1 side between the adjacent salient pole coils 3 and 3. The ventilation path 10 is open on both sides in the axial direction of the rotor core 2, and cooling air is forcibly fed from the inlet portions of both openings.

また通風路１０は、隣合う突磁極コイル３，３間にも開口されており、通風路１０に供給された冷却風は、この隣合う突磁極コイル３，３間とコイル押さえ部材７との間の隙間を通して放出されるようになっている（特許文献１参照）。
特開２００３−３３３７９０号公報 The ventilation path 10 is also opened between adjacent salient magnetic pole coils 3 and 3, and the cooling air supplied to the ventilation path 10 is between the adjacent salient magnetic pole coils 3 and 3 and the coil pressing member 7. It discharge | releases through the clearance gap between them (refer patent document 1).
JP 2003-333790 A

上記のようなコイル押さえ部材７を取り付けた突極形回転電機の回転子においては、突磁極コイル３の軸方向両端部や突磁極鉄心部２ａの先端部は、回転子の外側の空気や通風路１０を流れる多量の冷却空気で冷却されるので、温度上昇が比較的低く抑さえられる。   In the rotor of the salient pole type rotating electrical machine to which the coil holding member 7 as described above is attached, both ends in the axial direction of the salient pole coil 3 and the tip end portion of the salient pole iron core 2a are air or ventilation outside the rotor. Since it is cooled by a large amount of cooling air flowing through the passage 10, the temperature rise is suppressed to a relatively low level.

しかしながら、突磁極コイル３の軸方向に沿う側面は、隣接する突磁極コイル３，３間にコイル押さえ部材７が存在するために突磁極コイル３の側面の長手方向に沿う冷却風の流れが阻害されており、この冷却風の流れによる冷却が期待できない。このため突磁極コイル３の軸方向中央部は、突磁極コイル３，３間とコイル押さえ部材７間の隙間から放出される冷却風による冷却に依存することになり、突磁極コイル３の軸方向中央部に対する冷却性が悪く、温度上昇が大きくなり、突磁極コイル３内の温度差が大きくなっていた。   However, the side surface along the axial direction of the salient pole coil 3 is hindered by the flow of cooling air along the longitudinal direction of the side surface of the salient pole coil 3 because the coil pressing member 7 exists between the adjacent salient pole coils 3 and 3. Therefore, cooling by the flow of this cooling air cannot be expected. For this reason, the axial center part of the salient pole coil 3 depends on cooling by the cooling air discharged from the gap between the salient pole coils 3 and 3 and the coil holding member 7. Coolability with respect to the central portion is poor, the temperature rise is large, and the temperature difference in the salient pole coil 3 is large.

本発明は、上記の課題を解決するためになされたもので、突磁極コイルの軸方向中央部の温度上昇を抑え、突磁極コイル内の温度差も低減できて突磁極コイルの小形化および長寿命化を図ることのできる突極形回転電機の回転子を提供することを目的とする。 The present invention has been made in order to solve the above-described problems, and it is possible to suppress the temperature rise in the axial center portion of the salient pole coil and reduce the temperature difference in the salient pole coil, thereby reducing the size and length of the salient pole coil. An object of the present invention is to provide a salient pole type rotating electrical machine rotor capable of extending the service life.

上記の課題を解決するため、本発明による突極形回転電機の回転子においては、回転子軸に、放射方向に延びる複数個の突磁極鉄心部を有する回転子鉄心を装着し、この回転子鉄心の突磁極鉄心部にそれぞれ突磁極コイルを巻装し、隣接する突磁極コイル間の回転子軸側に回転子軸の軸方向に沿って延びる通風路を構成するとともに隣接する突磁極コイルの各側面を押さえつける複数個の押さえ部材を、回転子軸の軸方向に所定の間隔をおいて配設した突極形回転電機の回転子において、回転子鉄心の通風路の入り口部に、開口面積が拡大する方向に傾斜する傾斜部を設けたことを特徴とする。   In order to solve the above problems, in the rotor of the salient pole type rotating electrical machine according to the present invention, a rotor core having a plurality of salient magnetic cores extending in the radial direction is attached to the rotor shaft. A salient magnetic coil is wound around each of the salient magnetic cores of the iron core, and an air passage extending along the axial direction of the rotor shaft is formed on the rotor shaft side between adjacent salient magnetic pole coils. In the rotor of a salient pole type rotating electrical machine in which a plurality of pressing members for pressing each side surface are arranged at predetermined intervals in the axial direction of the rotor shaft, the opening area is provided at the entrance of the ventilation path of the rotor core It is characterized in that an inclined portion is provided which is inclined in a direction in which the angle is enlarged.

本発明によれば、通風路の入り口部に開口面積が大きくなる傾斜部が形成されているために、入り口部から冷却風が通風路内に流れ込みやすくなり、通風路内の風量が増大して突磁極コイルの側面を冷却する風量を増大させることができる。これにより突磁極コイルの軸方向中央部の温度上昇を抑えることができ、突磁極コイル内の温度差も低減することができて突磁極コイルの小形化および長寿命化を図ることができる。   According to the present invention, since the inclined portion having the large opening area is formed at the entrance portion of the air passage, the cooling air easily flows into the air passage from the entrance portion, and the air volume in the air passage increases. The air volume for cooling the side surface of the salient pole coil can be increased. As a result, the temperature rise in the central portion in the axial direction of the salient pole coil can be suppressed, the temperature difference in the salient pole coil can be reduced, and the salient pole coil can be reduced in size and extended in life.

以下、本発明の一実施の形態を説明する。図１は、本発明による突極形回転電機の回転子の主要部を示す断面図である。図２は、図１のII−II線に沿って切断して平面状に展開した展開断面図である。図１および図２において、回転子軸１には回転子鉄心２が装着されている。この回転子鉄心２には、放射方向に延びる４個の突磁極鉄心部２ａが形成されていて、各突磁極鉄心部２ａには突磁極コイル３が巻装されている。各突磁極コイル３は、平板状のコイル導体と、そのコイル導体とほぼ同じ形状で同じ大きさの導体間絶縁材とが互い違いに配列され多数が積層され、両者間の絶縁がなされたエッジワイズ形となっていて、端部を外側に向けて巻装されている。   Hereinafter, an embodiment of the present invention will be described. FIG. 1 is a sectional view showing a main part of a rotor of a salient pole type rotating electric machine according to the present invention. FIG. 2 is a developed cross-sectional view taken along the line II-II in FIG. 1 and 2, a rotor core 2 is mounted on the rotor shaft 1. The rotor core 2 is formed with four salient pole core portions 2a extending in the radial direction, and salient pole coils 3 are wound around the salient pole core portions 2a. Each salient pole coil 3 is edgewise in which a flat coil conductor and inter-conductor insulating materials having the same shape and the same size as that of the coil conductor are alternately arranged and a large number of them are laminated, and insulation between them is made. It is shaped and wound with its ends facing outward.

各突磁極コイル３は、その軸方向両側に設けられた絶縁カラー４，４を介して突磁極シュー５と回転子鉄心２の段部２ｂに挟まれて固定されている。突磁極シュー５は、突磁極コイル３を巻装した後に突磁極鉄心部２ａに押さえボルト６により取り付けられている。   Each salient pole coil 3 is sandwiched and fixed between the salient pole shoe 5 and the step 2b of the rotor core 2 via insulating collars 4 and 4 provided on both sides in the axial direction. The salient pole shoe 5 is attached to the salient pole iron core portion 2a by a holding bolt 6 after the salient pole coil 3 is wound.

また隣合う突磁極コイル３，３間には、Ｌ字状をなす複数個のコイル押さえ部材７が回転子軸１の軸方向に沿って間隔をおいて配設されており、それぞれ突磁極鉄心部２ａおよび回転子軸１に螺合された植え込みボルト８および植込みボルト８に螺合する締付けナット９を介して回転子鉄心２および回転子軸１に固定されている。   In addition, a plurality of L-shaped coil pressing members 7 are disposed between adjacent salient magnetic pole coils 3 and 3 at intervals along the axial direction of the rotor shaft 1. It is fixed to the rotor iron core 2 and the rotor shaft 1 via a stud bolt 9 screwed to the part 2 a and the rotor shaft 1 and a tightening nut 9 screwed to the stud bolt 8.

隣合う突磁極コイル３，３間の回転子軸１側には、回転子軸１の軸方向に沿って延びる通風路１０が構成されている。この通風路１０は、回転子鉄心２の軸方向両側に開口しており、その両開口の入り口部からそれぞれ冷却風が強制的に送り込まれている。   A ventilation path 10 extending along the axial direction of the rotor shaft 1 is formed on the rotor shaft 1 side between the adjacent salient pole coils 3 and 3. The ventilation path 10 is open on both sides in the axial direction of the rotor core 2, and cooling air is forcibly sent from the entrance portions of both openings.

また通風路１０は、隣合う突磁極コイル３，３間にも開口されており、通風路１０に供給された冷却風は、この隣合う突磁極コイル３，３間とコイル押さえ部材７との間の隙間を通して放出されるようになっている。   The ventilation path 10 is also opened between adjacent salient magnetic pole coils 3 and 3, and the cooling air supplied to the ventilation path 10 is between the adjacent salient magnetic pole coils 3 and 3 and the coil pressing member 7. It is designed to be released through the gap between them.

ここで本実施の形態においては、通風路１０の入り口部を構成する回転子鉄心２の軸方向両側の開口部に、開口面積が拡大する方向に傾斜する傾斜部２ｃが形成されている。この傾斜部２ｃは、回転子鉄心２の突磁極鉄心部２ａに面取り加工を施して構成することができる。   Here, in the present embodiment, inclined portions 2 c that are inclined in the direction in which the opening area is enlarged are formed in the openings on both sides in the axial direction of the rotor core 2 that constitutes the entrance portion of the ventilation path 10. The inclined portion 2c can be configured by chamfering the salient pole core portion 2a of the rotor core 2.

このように構成すれば、通風路１０における冷却風の入り口部が傾斜部２ｃにより広がっているために、通風路１０内に空気が流れ込みやすくなり、通風路１０内の風量を増大させることができる。これにより通風路１０内から突磁極コイル３，３間およびコイル押さえ部材７，７間を通して外部に放出される冷却風量を増大させることができるので、突磁極コイル３の側面の冷却性を改善して軸方向中央部の温度上昇を抑えることができ、突磁極コイル３内の温度差も低減されて突磁極コイル３の小形化および長寿命化を図ることができる。   If comprised in this way, since the entrance part of the cooling air in the ventilation path 10 has spread by the inclined part 2c, air becomes easy to flow into the ventilation path 10, and the air volume in the ventilation path 10 can be increased. . As a result, the amount of cooling air discharged from the air passage 10 through the salient magnetic pole coils 3 and 3 and between the coil pressing members 7 and 7 can be increased, thereby improving the cooling performance of the side surface of the salient magnetic pole coil 3. Thus, the temperature rise in the central portion in the axial direction can be suppressed, and the temperature difference in the salient pole coil 3 can be reduced, so that the salient pole coil 3 can be reduced in size and extended in life.

また、通風路１０を形成する側面部分の端部だけでなくて回転子鉄心２の端部にも傾斜部２ｃを設けることにより、回転子軸１にかかる遠心力を低減することができ、回転子軸１の応力増大を防ぐことができる。すなわち、かりに傾斜部２ｃを、通風路１０を形成する側面部分の端部のみとすれば、その外周に位置する回転子鉄心２や突磁極コイル３や突磁極シュー５などの部品の遠心力は変わらないままで、しかも回転子軸１の断面積が減ることになり回転子軸１の応力が増大してしまうが、この実施形態では上記構成により回転子軸１０の応力の増大を防ぐことができる。   Further, by providing the inclined portion 2c not only at the end portion of the side surface portion forming the ventilation path 10 but also at the end portion of the rotor core 2, the centrifugal force applied to the rotor shaft 1 can be reduced, and the rotation An increase in stress of the child shaft 1 can be prevented. That is, if the inclined portion 2c is only the end portion of the side surface forming the ventilation path 10, the centrifugal force of the components such as the rotor core 2, the salient pole coil 3 and the salient pole shoe 5 located on the outer periphery thereof is Although the cross-sectional area of the rotor shaft 1 is reduced and the stress of the rotor shaft 1 is increased, the increase in the stress of the rotor shaft 10 is prevented by the above configuration in this embodiment. it can.

本発明による突極形回転電機の回転子の主要部を示す断面図である。It is sectional drawing which shows the principal part of the rotor of the salient pole type rotary electric machine by this invention. 図１のII−II線に沿って切断して平面状に展開した展開断面図である。It is the expanded sectional view which cut | disconnected along the II-II line | wire of FIG. 1, and expand | deployed planarly. 従来の４極タイプにおける突極形回転電機の回転子の主要部を示す断面図である。It is sectional drawing which shows the principal part of the rotor of the salient pole type rotary electric machine in the conventional 4 pole type. 図３のIV−IV線に沿って切断して平面状に展開した展開断面図である。FIG. 4 is a developed cross-sectional view taken along the line IV-IV in FIG. 3 and developed in a planar shape. 回転子の主要部を示す斜視図である。It is a perspective view which shows the principal part of a rotor.

符号の説明Explanation of symbols

１…回転子軸
２…回転子鉄心
２ａ…突磁極鉄心部
２ｂ…段部
２ｃ…傾斜部
３…突磁極コイル
４…絶縁カラー
５…突磁極シュー
６…押さえボルト
７…コイル押さえ部材
８…植込みボルト
９…ナット
１０…通風路 DESCRIPTION OF SYMBOLS 1 ... Rotor shaft 2 ... Rotor core 2a ... Salient pole iron core part 2b ... Step part 2c ... Inclined part 3 ... Salient pole coil 4 ... Insulation collar 5 ... Salient pole shoe 6 ... Holding bolt 7 ... Coil holding member 8 ... Implantation Bolt 9 ... Nut 10 ... Ventilation path

Claims (1)

回転子軸に、放射方向に延びる複数個の突磁極鉄心部を有する回転子鉄心を装着し、この回転子鉄心の前記突磁極鉄心部にそれぞれ突磁極コイルを巻装し、隣接する前記突磁極コイル間の前記回転子軸側に前記回転子軸の軸方向に沿って延びる通風路を構成するとともに隣接する前記突磁極コイルの各側面を押さえつける複数個の押さえ部材を、前記回転子軸の軸方向に所定の間隔をおいて配設した突極形回転電機の回転子において、前記回転子鉄心の前記通風路の入り口部に、開口面積が拡大する方向に傾斜する傾斜部を設けたことを特徴とする突極形回転電機の回転子。   A rotor core having a plurality of salient magnetic cores extending in the radial direction is mounted on the rotor shaft, and each salient magnetic coil is wound around each of the salient magnetic cores of the rotor core, and the adjacent salient poles A plurality of pressing members that form a ventilation path extending along the axial direction of the rotor shaft on the rotor shaft side between the coils and press each side surface of the adjacent salient pole coil are arranged on the axis of the rotor shaft. In the rotor of the salient pole type rotating electrical machine disposed at a predetermined interval in the direction, an inclined portion that is inclined in the direction in which the opening area is enlarged is provided at the entrance of the ventilation path of the rotor core. A salient pole type rotating electrical machine rotor.
JP2006007004A 2006-01-16 2006-01-16 Rotor of salient pole electric rotating machine Pending JP2007189849A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060758A1 (en) * 2007-11-09 2009-05-14 Toyota Jidosha Kabushiki Kaisha Dynamo-electric machine
CN102570670A (en) * 2012-01-17 2012-07-11 东元总合科技（杭州）有限公司 Rotor with internal spacers and motor employing rotor
CN103595160A (en) * 2013-11-20 2014-02-19 陆川县志强电机厂 Quadrupole motor
JP2016530869A (en) * 2013-09-06 2016-09-29 ジーイー・アビエイション・システムズ・エルエルシー Rotor assembly for electric machines
JP2017108479A (en) * 2015-12-07 2017-06-15 株式会社明電舎 Rotor structure for rotary electric machine
CN110224511A (en) * 2019-06-28 2019-09-10 徐州逸腾机电科技有限公司 A kind of electric vehicle brushless motor rotor structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002058188A (en) * 2000-08-10 2002-02-22 Mitsubishi Electric Corp Salient-pole rotor
JP2003319588A (en) * 2002-04-19 2003-11-07 Nishishiba Electric Co Ltd Rotor for motor

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2002058188A (en) * 2000-08-10 2002-02-22 Mitsubishi Electric Corp Salient-pole rotor
JP2003319588A (en) * 2002-04-19 2003-11-07 Nishishiba Electric Co Ltd Rotor for motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060758A1 (en) * 2007-11-09 2009-05-14 Toyota Jidosha Kabushiki Kaisha Dynamo-electric machine
CN102570670A (en) * 2012-01-17 2012-07-11 东元总合科技（杭州）有限公司 Rotor with internal spacers and motor employing rotor
JP2016530869A (en) * 2013-09-06 2016-09-29 ジーイー・アビエイション・システムズ・エルエルシー Rotor assembly for electric machines
US10523079B2 (en) 2013-09-06 2019-12-31 Ge Aviation Systems Llc Rotor assembly for an electric machine with thermal management features
CN103595160A (en) * 2013-11-20 2014-02-19 陆川县志强电机厂 Quadrupole motor
JP2017108479A (en) * 2015-12-07 2017-06-15 株式会社明電舎 Rotor structure for rotary electric machine
WO2017099027A1 (en) * 2015-12-07 2017-06-15 株式会社 明電舎 Rotor structure of rotary electrical machine
CN110224511A (en) * 2019-06-28 2019-09-10 徐州逸腾机电科技有限公司 A kind of electric vehicle brushless motor rotor structure

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