JP2011055625A - Rotor of rotary electrical machine - Google Patents

Rotor of rotary electrical machine Download PDF

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Publication number
JP2011055625A
JP2011055625A JP2009201611A JP2009201611A JP2011055625A JP 2011055625 A JP2011055625 A JP 2011055625A JP 2009201611 A JP2009201611 A JP 2009201611A JP 2009201611 A JP2009201611 A JP 2009201611A JP 2011055625 A JP2011055625 A JP 2011055625A
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rotor
wedge
ventilation
insulator
rotor winding
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Japanese (ja)
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Kenji Nagai
健志 長井
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2009201611A priority Critical patent/JP2011055625A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a rotor of a rotary electrical machine, wherein a conductor located under a holding ring of the rotor can be cooled by providing the conductor with a ventilation circuit that can be processed readily. <P>SOLUTION: A vent hole 6 is provided in the conductor 2 and an insulator 3 located under the holding ring 5 of the rotor 1 of the rotary electrical machine. A vent groove 7 is provided in a wedge 4, located under the holding ring 5 of the rotor 1. In addition, the ventilation circuit connecting the vent groove 7 to an adjacent vent hole 6 positioned on the center side of the rotor core is provided. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

この発明は、回転電機の回転子に係わり、より具体的にはタービン発電機の回転子の如く、回転子巻線を構成する導体の冷却通風回路に関する。   The present invention relates to a rotor of a rotating electric machine, and more particularly to a cooling ventilation circuit for a conductor constituting a rotor winding, such as a rotor of a turbine generator.

回転電機は、回転軸を回転可能に支持された回転子が固定子と対向配置して概略構成されている。回転子を構成する回転子鉄心は、軸方向に延び、かつ、周方向に所定間隔をもって形成された複数のスロットを有し、このスロット内に回転子巻線を形成する複数の導体を積層し格納している。導体は、スロットの外周側に配置した金属製のウェッジに拘束されており、ウェッジは、高速回転時にも導体を保持できるように設計されている。さらに、導体とウェッジの間には両者を電気的に絶縁する絶縁物が配置される。回転子巻線の軸方向端部には、この部分を覆うように絶縁筒を介して保持環が嵌着され、保持環で軸端部の導体の遠心力を保持するようにしている。   The rotating electrical machine is schematically configured by a rotor having a rotating shaft rotatably supported so as to face a stator. The rotor core constituting the rotor has a plurality of slots extending in the axial direction and formed at predetermined intervals in the circumferential direction, and a plurality of conductors forming a rotor winding are laminated in the slots. Storing. The conductor is constrained by a metal wedge disposed on the outer peripheral side of the slot, and the wedge is designed so that the conductor can be held even during high-speed rotation. Furthermore, an insulator that electrically insulates the two is disposed between the conductor and the wedge. A holding ring is fitted to an end portion in the axial direction of the rotor winding through an insulating cylinder so as to cover this portion, and the centrifugal force of the conductor at the shaft end portion is held by the holding ring.

ところで、大型の回転電機の回転子冷却方法は、回転子に取り付けたファンにより、回転電機機内のガスを循環させ、ガス冷却器により冷却しており、回転子鉄心内を軸方向に延びるスロットに格納される回転子巻線及び絶縁物、ウェッジに半径方向の通風穴を設け、回転子中心付近より導入した冷却風（ガス）を半径方向へ流通させることで、導体を冷却している。しかし、回転子の保持環の下の導体付近には、明確な冷却風（ガス）が流通する流路が無いため、この部分の温度が高くなる。この部分の温度上昇を低減する方法として、導体の長手方向に沿って冷却風（ガス）が流通する通風溝を設ける方法が提案されている（例えば、特許文献１及び特許文献２を参照）。   By the way, the rotor cooling method of a large-sized rotating electrical machine is such that the gas in the rotating electrical machine is circulated by a fan attached to the rotor and cooled by a gas cooler, and the slot extends in the rotor core in the axial direction. The conductor is cooled by providing radial ventilation holes in the rotor windings, insulators, and wedges to be stored and circulating cooling air (gas) introduced from the vicinity of the center of the rotor in the radial direction. However, in the vicinity of the conductor under the retaining ring of the rotor, there is no channel through which clear cooling air (gas) flows, so the temperature of this portion becomes high. As a method for reducing the temperature rise in this portion, a method of providing a ventilation groove through which cooling air (gas) flows along the longitudinal direction of the conductor has been proposed (see, for example, Patent Document 1 and Patent Document 2).

特開２００７−１１６７５６号公報JP 2007-116756 A 特表２００３−５２３１５８号公報Special table 2003-523158

従来技術では、保持環の下の導体に通風溝を加工することが必要である。一般に、導体は回転子巻線を形成するため、長尺の帯状であるため、導体表面に通風溝を加工することは容易なことでなく、コスト増加を招く。   In the prior art, it is necessary to process the ventilation groove in the conductor under the retaining ring. In general, since the conductor forms a rotor winding and is in the form of a long band, it is not easy to process the ventilation groove on the conductor surface, resulting in an increase in cost.

この発明は、保持環の下の導体に加工が容易な通風回路を設けることで、回転子の保持環の下にある導体を冷却することを目的とする。   An object of the present invention is to cool a conductor under a retaining ring of a rotor by providing an easily-ventilated ventilation circuit in the conductor under the retaining ring.

この発明に係る回転電機の回転子は、回転子の保持環の下にある導体及び絶縁物に通風穴を設け、回転子の保持環の下にあるウェッジに通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けるものである。   The rotor of the rotating electrical machine according to the present invention is provided with a ventilation hole in the conductor and the insulator under the retaining ring of the rotor, a ventilation groove in the wedge under the retaining ring of the rotor, and the ventilation The ventilation circuit which connects a groove | channel to the adjacent ventilation hole located in the center side of a rotor iron core is provided.

また、この発明に係る回転電機の回転子は、回転子の保持環の下にある導体に通風穴を設け、回転子の保持環の下にある絶縁物に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けるものである。   Further, the rotor of the rotating electrical machine according to the present invention is provided with a ventilation hole in the conductor under the retaining ring of the rotor, a ventilation groove in the insulator under the retaining ring of the rotor, and the ventilation The ventilation circuit which connects a groove | channel to the adjacent ventilation hole located in the center side of a rotor iron core is provided.

この発明に係る回転電機の回転子は、回転子の保持環の下にある導体及び絶縁物に通風穴を設け、回転子の保持環の下にあるウェッジに通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。   The rotor of the rotating electrical machine according to the present invention is provided with a ventilation hole in the conductor and the insulator under the retaining ring of the rotor, a ventilation groove in the wedge under the retaining ring of the rotor, and the ventilation By providing a ventilation circuit that connects the groove to the adjacent ventilation hole located on the center side of the rotor core, it is possible to provide a ventilation circuit that is easy to process in the conductor under the retaining ring, and the rotor retaining ring The underlying conductor can be cooled.

また、この発明に係る回転電機の回転子は、回転子の保持環の下にある導体に通風穴を設け、回転子の保持環の下にある絶縁物に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、導体の加工が、通風穴だけになるので、通風穴と通風溝がある場合に比べて、加工時間、加工の容易さがともに改善される。 Further, the rotor of the rotating electrical machine according to the present invention is provided with a ventilation hole in the conductor under the retaining ring of the rotor, a ventilation groove in the insulator under the retaining ring of the rotor, and the ventilation By providing a ventilation circuit that connects the groove to the adjacent ventilation hole located on the center side of the rotor core, it is possible to provide a ventilation circuit that is easy to process in the conductor under the retaining ring, and the rotor retaining ring The underlying conductor can be cooled.
Further, since the conductor is processed only in the ventilation hole, both the processing time and the ease of processing are improved as compared with the case where the ventilation hole and the ventilation groove are provided.

この発明の実施の形態１に係る回転子の断面図。Sectional drawing of the rotor which concerns on Embodiment 1 of this invention. 図１のa-b切断面図。FIG. この発明の実施の形態２に係る回転子の断面図。Sectional drawing of the rotor which concerns on Embodiment 2 of this invention. この発明の実施の形態３に係る回転子の断面図。Sectional drawing of the rotor which concerns on Embodiment 3 of this invention. この発明の実施の形態４に係る回転子の断面図。Sectional drawing of the rotor which concerns on Embodiment 4 of this invention. この発明の実施の形態５に係る回転子の断面図Sectional drawing of the rotor which concerns on Embodiment 5 of this invention

実施の形態１．
図１は、この発明の実施の形態１に係る回転電機の回転子の一部を概略的に示し、軸方向に沿って切断した断面図である。図２は、図１のa-b切断面図である。図１の右側には回転子１の鉄心が、左側には導体２が延びており、導体２端は保持環５にて拘束されている。３は絶縁物、４はウェッジ、６は通風穴、７は通風溝、８は冷却風の流れである。 Embodiment 1 FIG.
1 is a sectional view schematically showing a part of a rotor of a rotary electric machine according to Embodiment 1 of the present invention and cut along an axial direction. FIG. 2 is an ab cutaway view of FIG. An iron core of the rotor 1 extends on the right side of FIG. 1, and a conductor 2 extends on the left side, and the end of the conductor 2 is constrained by a holding ring 5. 3 is an insulator, 4 is a wedge, 6 is a ventilation hole, 7 is a ventilation groove, and 8 is a flow of cooling air.

次に動作について、図１と図２で説明する。冷却風の流れ８は、図中の矢印で示すように、回転子鉄心の端側から流入し、導体２下の開口部、導体２及び絶縁物３、ウェッジ４の通風穴６を通過し、回転子１外周側へ至る。保持環５の下には、ウェッジ４の下面に軸方向に沿って通風溝７を形成し、その通風溝７が回転子鉄心の中央側に位置する隣の通風穴６に接続される通風回路を設けることで、保持環５の下の冷却風の流れ８が留まることなく流れて、保持環５の下の導体２を冷却する。
なお、前記のものは、ウェッジの下面に通風溝を設けたが、ウェッジに通風穴を設け、ウェッジの上面に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けても良い。
また、前記のものは、保持環の下に、１つの通風穴と１つの通風溝を備えているが、通風穴と通風溝を複数箇所設けても良いことは勿論である。 Next, the operation will be described with reference to FIGS. As shown by the arrows in the figure, the cooling air flow 8 flows in from the end of the rotor core, passes through the opening under the conductor 2, the conductor 2 and the insulator 3, and the ventilation hole 6 of the wedge 4, It reaches to the outer peripheral side of the rotor 1. Under the holding ring 5, a ventilation groove 7 is formed in the lower surface of the wedge 4 along the axial direction, and the ventilation groove 7 is connected to an adjacent ventilation hole 6 located on the center side of the rotor core. The cooling air flow 8 below the retaining ring 5 flows without stopping, and the conductor 2 below the retaining ring 5 is cooled.
In the above, the ventilation groove is provided on the lower surface of the wedge. However, the ventilation hole is provided on the wedge, the ventilation groove is provided on the upper surface of the wedge, and the ventilation groove is adjacent to the central side of the rotor core. You may provide the ventilation circuit connected to this ventilation hole.
Moreover, although the said thing is equipped with one ventilation hole and one ventilation groove under the holding ring, of course, you may provide a ventilation hole and a ventilation groove in multiple places.

前記のように、この発明に係る回転電機の回転子は、回転子の保持環の下にある導体及び絶縁物に通風穴を設け、回転子の保持環の下にあるウェッジの下面に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、導体の加工が、通風穴だけになるので、通風穴と通風溝がある場合に比べて、加工時間、加工の容易さがともに改善される。 As described above, the rotor of the rotating electrical machine according to the present invention is provided with ventilation holes in the conductors and insulators under the rotor holding ring, and ventilation grooves in the lower surface of the wedge under the rotor holding ring. And a ventilation circuit that connects the ventilation groove to the adjacent ventilation hole located on the center side of the rotor core can provide a ventilation circuit that is easy to process on the conductor under the holding ring. The conductor under the rotor retaining ring can be cooled.
Further, since the conductor is processed only in the ventilation hole, both the processing time and the ease of processing are improved as compared with the case where the ventilation hole and the ventilation groove are provided.

実施の形態２．
図３は、この発明の実施の形態２に係る回転電機の回転子の一部を概略的に示し、軸方向に沿って切断した断面図である。実施の形態１では、ウェッジ４の下面の通風溝７が、回転子鉄心の中央側に位置する隣の通風穴に接続されていたが、回転子鉄心の端側へ開放することもできる。
次に動作について、図３で説明する。保持環５の下には、ウェッジ４の下面に軸方向に沿って通風溝７を形成し、その通風溝７が回転子鉄心の端側へ開放する通風回路を設けることで、保持環５の下の冷却風の流れ８が留まることなく流れて、保持環５の下の導体２を冷却する。 Embodiment 2. FIG.
FIG. 3 is a cross-sectional view schematically showing a part of the rotor of the rotating electrical machine according to the second embodiment of the present invention and cut along the axial direction. In the first embodiment, the ventilation groove 7 on the lower surface of the wedge 4 is connected to the adjacent ventilation hole located on the center side of the rotor core, but it can also be opened to the end side of the rotor core.
Next, the operation will be described with reference to FIG. Under the holding ring 5, a ventilation groove 7 is formed along the axial direction on the lower surface of the wedge 4, and a ventilation circuit is provided in which the ventilation groove 7 opens to the end side of the rotor core. The lower cooling air flow 8 flows without stopping, and cools the conductor 2 under the retaining ring 5.

前記のように、回転子の保持環の下にある導体及び絶縁物に通風穴を設け、回転子の保持環の下にあるウェッジの下面に通風溝を設け、かつ、その通風溝を回転子鉄心の端側へ開放する通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、実施の形態１では、通風溝が隣の通風穴に接続されていたため、冷却風が合流する際、合流損が生じていたが、通風溝を回転子鉄心の端側へ開放することにより、通風溝に与える圧力変動が低減されるという効果がある。 As described above, a ventilation hole is provided in the conductor and the insulator under the retaining ring of the rotor, a ventilation groove is provided in the lower surface of the wedge under the retaining ring of the rotor, and the ventilation groove is provided to the rotor. By providing a ventilation circuit that opens to the end side of the iron core, a ventilation circuit that can be easily processed can be provided in the conductor under the holding ring, and the conductor under the holding ring of the rotor can be cooled.
Moreover, in Embodiment 1, since the ventilation groove was connected to the adjacent ventilation hole, there was a merging loss when the cooling air merged, but by opening the ventilation groove to the end side of the rotor core, There is an effect that pressure fluctuation applied to the ventilation groove is reduced.

実施の形態３．
図４は、この発明の実施の形態３に係る回転電機の回転子の一部を概略的に示し、軸方向に沿って切断した断面図である。実施の形態１では、ウェッジ４の下面に通風溝７を設けたが、ウェッジ４下の絶縁物３の上面に通風溝７を設けても良い。
次に動作について、図４で説明する。保持環５の下には、絶縁物３の上面に軸方向に沿って通風溝７を形成し、その通風溝７が回転子鉄心の中央側に位置する隣の通風穴に接続される通風回路を設けることで、保持環５の下の冷却風の流れ８が留まることなく流れて、保持環５の下の導体２を冷却する。 Embodiment 3 FIG.
FIG. 4 is a cross-sectional view schematically showing a part of the rotor of the rotating electric machine according to Embodiment 3 of the present invention and cut along the axial direction. In the first embodiment, the ventilation groove 7 is provided on the lower surface of the wedge 4, but the ventilation groove 7 may be provided on the upper surface of the insulator 3 below the wedge 4.
Next, the operation will be described with reference to FIG. Under the holding ring 5, a ventilation groove 7 is formed in the upper surface of the insulator 3 along the axial direction, and the ventilation groove 7 is connected to an adjacent ventilation hole located on the center side of the rotor core. The cooling air flow 8 below the retaining ring 5 flows without stopping, and the conductor 2 below the retaining ring 5 is cooled.

前記のように、この発明に係る回転電機の回転子は、回転子の保持環の下にある導体及び絶縁物に通風穴を設け、回転子の保持環の下にある絶縁物の上面に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、ウェッジは金属材料であるのに対し、絶縁物はその特性上、エポキシ樹脂等で構成されるため、ウェッジよりも絶縁物の方が、通風溝を加工する際の加工時間、加工の容易さが更に改善される。 As described above, the rotor of the rotating electrical machine according to the present invention is provided with ventilation holes in the conductor and the insulator under the rotor holding ring, and the ventilation surface on the upper surface of the insulator under the rotor holding ring. By providing a ventilation circuit that connects the ventilation groove to the adjacent ventilation hole located on the center side of the rotor core by providing a groove, it is possible to provide a ventilation circuit that is easy to process on the conductor under the holding ring And the conductor under the rotor retaining ring can be cooled.
In addition, since the wedge is a metal material, the insulator is made of epoxy resin due to its characteristics. Therefore, the insulator is easier to process than the wedge when processing the ventilation groove. Is further improved.

実施の形態４．
図５は、この発明の実施の形態４に係る回転電機の回転子の一部を概略的に示し、軸方向に沿って切断した断面図である。実施の形態３では、絶縁物３の上面に通風溝７を設けていたが、絶縁物３の下面に設けても良い。
次に動作について、図５で説明する。保持環５の下には、絶縁物３の下面に軸方向に沿って通風溝７を形成し、その通風溝７が回転子鉄心の中央側に位置する隣の通風穴に接続される通風回路を設けることで、保持環５の下の冷却風の流れ８が留まることなく流れて、保持環５の下の導体２を冷却する。 Embodiment 4 FIG.
FIG. 5 is a cross-sectional view schematically showing a part of the rotor of the rotating electrical machine according to the fourth embodiment of the present invention, cut along the axial direction. In the third embodiment, the ventilation groove 7 is provided on the upper surface of the insulator 3, but it may be provided on the lower surface of the insulator 3.
Next, the operation will be described with reference to FIG. Under the holding ring 5, a ventilation groove 7 is formed along the axial direction on the lower surface of the insulator 3, and the ventilation groove 7 is connected to an adjacent ventilation hole located on the center side of the rotor core. The cooling air flow 8 below the retaining ring 5 flows without stopping, and the conductor 2 below the retaining ring 5 is cooled.

前記のように、回転子の保持環の下にある導体に通風穴を設け、回転子の保持環の下にある絶縁物の下面に通風溝を設け、かつ、その通風溝を回転子鉄心の中央側に位置する隣の通風穴に接続させる通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、通風溝が、絶縁物と導体の間に設けられているので、導体を直接冷却することができ、冷却性能を高めることができる。 As described above, a ventilation hole is provided in the conductor under the rotor holding ring, a ventilation groove is provided in the lower surface of the insulator under the rotor holding ring, and the ventilation groove is formed in the rotor core. By providing a ventilation circuit that is connected to the adjacent ventilation hole located on the center side, a ventilation circuit that can be easily processed can be provided on the conductor under the holding ring, and the conductor under the holding ring of the rotor is cooled. can do.
Further, since the ventilation groove is provided between the insulator and the conductor, the conductor can be directly cooled, and the cooling performance can be improved.

実施の形態５．
図６は、この発明の実施の形態５に係る回転電機の回転子の一部を概略的に示し、軸方向に沿って切断した断面図である。実施の形態４では、絶縁物３の下面の通風溝７が、回転子鉄心の中央側に位置する隣の通風穴に接続されていたが、回転子鉄心の端側へ開放することもできる。
次に動作について、図６で説明する。保持環５の下には、絶縁物３の下面に軸方向に沿って通風溝７を形成し、その通風溝７が回転子鉄心の端側へ開放する通風回路を設けることで、保持環５の下の冷却風の流れ８が留まることなく流れて、保持環５の下の導体２を冷却する。
なお、前記のものは、絶縁物の下面に通風溝を設けたが、絶縁物に通風穴を設け、絶縁物の上面に通風溝を設け、かつ、その通風溝を回転子鉄心の端側へ開放する通風回路を設けても良い。 Embodiment 5 FIG.
6 is a cross-sectional view schematically showing a part of a rotor of a rotary electric machine according to Embodiment 5 of the present invention, cut along the axial direction. In the fourth embodiment, the ventilation groove 7 on the lower surface of the insulator 3 is connected to the adjacent ventilation hole located on the center side of the rotor core, but may be opened to the end side of the rotor core.
Next, the operation will be described with reference to FIG. Under the holding ring 5, a ventilation groove 7 is formed along the axial direction on the lower surface of the insulator 3, and a ventilation circuit is provided in which the ventilation groove 7 opens to the end side of the rotor core. The cooling air flow 8 below flows without stopping and cools the conductor 2 below the retaining ring 5.
In addition, although the said thing provided the ventilation groove in the lower surface of the insulator, the ventilation hole was provided in the insulator, the ventilation groove was provided in the upper surface of the insulator, and the ventilation groove was to the end side of a rotor core. An open ventilation circuit may be provided.

前記のように、回転子の保持環の下にある導体に通風穴を設け、回転子の保持環の下にある絶縁物の下面に通風溝を設け、かつ、その通風溝を回転子鉄心の端側へ開放する通風回路を設けることで、保持環の下の導体に加工が容易な通風回路を設けることができ、回転子の保持環の下にある導体を冷却することができる。
また、実施の形態３及び実施の形態４では、通風溝が隣の通風穴に接続されていたため、冷却風が合流する際、合流損が生じていたが、通風溝を回転子鉄心の端側へ開放することにより、通風溝に与える圧力変動が低減されるという効果がある。 As described above, a ventilation hole is provided in the conductor under the rotor holding ring, a ventilation groove is provided in the lower surface of the insulator under the rotor holding ring, and the ventilation groove is formed in the rotor core. By providing the ventilation circuit that opens to the end side, a ventilation circuit that can be easily processed can be provided in the conductor under the holding ring, and the conductor under the holding ring of the rotor can be cooled.
Moreover, in Embodiment 3 and Embodiment 4, since the ventilation groove was connected to the adjacent ventilation hole, there was a merging loss when the cooling air merged, but the ventilation groove was on the end side of the rotor core. Opening to the side has the effect of reducing pressure fluctuations applied to the ventilation groove.

１...回転子、２...導体、３...絶縁物、４...ウェッジ、５...保持環、
６...通風穴、７...通風溝、８...冷却風の流れ 1 ... rotor, 2 ... conductor, 3 ... insulator, 4 ... wedge, 5 ... retaining ring,
6 ... ventilation hole, 7 ... ventilation groove, 8 ... flow of cooling air

Claims (4)

軸方向に延び、かつ、周方向に所定の間隔をもって形成される複数のスロットを有する回転子鉄心と、前記回転子鉄心の各スロット内に、複数の導体が積層されて収納される回転子巻線と、前記回転子巻線を拘束するウェッジと、前記回転子巻線と前記ウェッジを電気的に絶縁する絶縁物と、前記回転子巻線の軸方向端部を覆って保持する保持環とを備え、前記回転子巻線及び前記絶縁物、前記ウェッジには径方向の通風穴が設けられている回転電機の回転子において、
前記保持環の下にある前記回転子巻線及び前記絶縁物に径方向の通風穴を設け、前記保持環の下にある前記ウェッジに、軸方向に沿って通風溝が形成され、かつ、前記通風溝が前記回転子鉄心の中央側に位置する隣の通風穴に接続されることを特徴とする回転電機の回転子。 A rotor core having a plurality of slots extending in the axial direction and formed at predetermined intervals in the circumferential direction, and a rotor winding in which a plurality of conductors are stacked and accommodated in each slot of the rotor core A wire, a wedge that restrains the rotor winding, an insulator that electrically insulates the rotor winding and the wedge, and a retaining ring that covers and holds an axial end of the rotor winding. In the rotor of the rotating electrical machine in which the rotor winding and the insulator, the wedge is provided with a radial ventilation hole,
A radial ventilation hole is provided in the rotor winding and the insulator under the holding ring, and a ventilation groove is formed along the axial direction in the wedge under the holding ring, and A rotor of a rotating electrical machine, wherein a ventilation groove is connected to an adjacent ventilation hole located on the center side of the rotor core. 軸方向に延び、かつ、周方向に所定の間隔をもって形成される複数のスロットを有する回転子鉄心と、前記回転子鉄心の各スロット内に、複数の導体が積層されて収納される回転子巻線と、前記回転子巻線を拘束するウェッジと、前記回転子巻線と前記ウェッジを電気的に絶縁する絶縁物と、前記回転子巻線の軸方向端部を覆って保持する保持環とを備え、前記回転子巻線及び前記絶縁物、前記ウェッジには径方向の通風穴が設けられている回転電機の回転子において、
前記保持環の下にある前記回転子巻線及び前記絶縁物に径方向の通風穴を設け、前記保持環の下にある前記ウェッジに、軸方向に沿って通風溝が形成され、かつ、前記通風溝が前記回転子鉄心の端側へ開放されることを特徴とする回転電機の回転子。 A rotor core having a plurality of slots extending in the axial direction and formed at predetermined intervals in the circumferential direction, and a rotor winding in which a plurality of conductors are stacked and accommodated in each slot of the rotor core A wire, a wedge that restrains the rotor winding, an insulator that electrically insulates the rotor winding and the wedge, and a retaining ring that covers and holds an axial end of the rotor winding. In the rotor of the rotating electrical machine in which the rotor winding and the insulator, the wedge is provided with a radial ventilation hole,
A radial ventilation hole is provided in the rotor winding and the insulator under the holding ring, and a ventilation groove is formed along the axial direction in the wedge under the holding ring, and A rotor of a rotating electrical machine, wherein a ventilation groove is opened to an end side of the rotor core. 軸方向に延び、かつ、周方向に所定の間隔をもって形成される複数のスロットを有する回転子鉄心と、前記回転子鉄心の各スロット内に、複数の導体が積層されて収納される回転子巻線と、前記回転子巻線を拘束するウェッジと、前記回転子巻線と前記ウェッジを電気的に絶縁する絶縁物と、前記回転子巻線の軸方向端部を覆って保持する保持環とを備え、前記回転子巻線及び前記絶縁物、前記ウェッジには径方向の通風穴が設けられている回転電機の回転子において、
前記保持環の下にある前記回転子巻線に径方向の通風穴を設け、前記保持環の下にある前記絶縁物に、軸方向に沿って通風溝が形成され、かつ、前記通風溝が前記回転子鉄心の中央側に位置する隣の通風穴に接続されることを特徴とする回転電機の回転子。 A rotor core having a plurality of slots extending in the axial direction and formed at predetermined intervals in the circumferential direction, and a rotor winding in which a plurality of conductors are stacked and accommodated in each slot of the rotor core A wire, a wedge that restrains the rotor winding, an insulator that electrically insulates the rotor winding and the wedge, and a retaining ring that covers and holds an axial end of the rotor winding. In the rotor of the rotating electrical machine in which the rotor winding and the insulator, the wedge is provided with a radial ventilation hole,
A radial ventilation hole is provided in the rotor winding under the holding ring, a ventilation groove is formed along the axial direction in the insulator under the holding ring, and the ventilation groove is A rotor of a rotating electrical machine, wherein the rotor is connected to an adjacent ventilation hole located on the center side of the rotor core. 軸方向に延び、かつ、周方向に所定の間隔をもって形成される複数のスロットを有する回転子鉄心と、前記回転子鉄心の各スロット内に、複数の導体が積層されて収納される回転子巻線と、前記回転子巻線を拘束するウェッジと、前記回転子巻線と前記ウェッジを電気的に絶縁する絶縁物と、前記回転子巻線の軸方向端部を覆って保持する保持環とを備え、前記回転子巻線及び前記絶縁物、前記ウェッジには径方向の通風穴が設けられている回転電機の回転子において、
前記保持環の下にある前記回転子巻線に径方向の通風穴を設け、前記保持環の下にある前記絶縁物に、軸方向に沿って通風溝が形成され、かつ、前記通風溝が前記回転子鉄心の端側へ開放されることを特徴とする回転電機の回転子。 A rotor core having a plurality of slots extending in the axial direction and formed at predetermined intervals in the circumferential direction, and a rotor winding in which a plurality of conductors are stacked and accommodated in each slot of the rotor core A wire, a wedge that restrains the rotor winding, an insulator that electrically insulates the rotor winding and the wedge, and a retaining ring that covers and holds an axial end of the rotor winding. In the rotor of the rotating electrical machine in which the rotor winding and the insulator, the wedge is provided with a radial ventilation hole,
A radial ventilation hole is provided in the rotor winding under the holding ring, a ventilation groove is formed along the axial direction in the insulator under the holding ring, and the ventilation groove is A rotor of a rotating electrical machine, wherein the rotor is opened toward an end side of the rotor core.
JP2009201611A 2009-09-01 2009-09-01 Rotor of rotary electrical machine Pending JP2011055625A (en)

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CN104065186A (en) * 2014-06-13 2014-09-24 新疆金风科技股份有限公司 Stator used for motor, motor and ventilation cooling method of motor
JP2018191386A (en) * 2017-04-28 2018-11-29 株式会社東芝 Rotor for rotary electric devices

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JPS5671451A (en) * 1979-11-12 1981-06-15 Hitachi Ltd Rotary magnetic field winding
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JPS5671451A (en) * 1979-11-12 1981-06-15 Hitachi Ltd Rotary magnetic field winding
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CN104065186A (en) * 2014-06-13 2014-09-24 新疆金风科技股份有限公司 Stator used for motor, motor and ventilation cooling method of motor
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