JP2004088875A - Bearing device of vertical rotating electric machine - Google Patents

Bearing device of vertical rotating electric machine Download PDF

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JP2004088875A
JP2004088875A JP2002244786A JP2002244786A JP2004088875A JP 2004088875 A JP2004088875 A JP 2004088875A JP 2002244786 A JP2002244786 A JP 2002244786A JP 2002244786 A JP2002244786 A JP 2002244786A JP 2004088875 A JP2004088875 A JP 2004088875A
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bearing
rotating electric
electric machine
oil tank
vertical rotating
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JP4253478B2 (en
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Takashi Aikei
愛敬　孝
Kazunari Konishi
小西　和成
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TMA ELECTRIC CORP
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TMA ELECTRIC CORP
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing device of a vertical rotating electric machine with high quality and low cost without need for external auxiliary facilities such as cooling water piping. <P>SOLUTION: In this bearing device of the vertical rotating electric machine where a bearing 4 is provided between a runner 5 fitted on a rotor shaft 3 and a bearing support base 8 and the runner 5, the bearing 4, and the bearing support base 8 are immersed into lubricating oil 10 in a hydraulic tank 9 to support the dead weight of a rotor and a load, a radiating part 14 is provided on the outer-periphery wall 9-1 of the hydraulic tank, and a cooling fan 16 is fitted to the rotor shaft 3. A wind tunnel body 18 is provided to guide air blasting from the cooling fan 16 to the radiating part provided on the outer-periphery wall of the hydraulic oil. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、立軸形回転電機の軸受装置に係り、特に潤滑油を空気冷却ファンにより冷却するように構成した立軸形回転電機の軸受装置に関する。
【０００２】
【従来の技術】
図２は、従来の立軸形回転電機の軸受装置を示す断面図である。図２において、１は立軸型回転電機のフレームであり、２はこのフレーム１の上端部に取り付けられた板状に形成された軸受ブラケットであり、中心部分を回転子軸３により貫通され、上部で軸受４を支持するように構成されている。
【０００３】
前記回転子軸３は、前記軸受ブラケット２を貫通して突出した上端部にランナー５を嵌合してランナー固定ナット６により固着している。また、前記軸受４は例えばスフェリカル軸受（スラスト自動調心ころ軸受）等のころがり軸受で構成され、内輪４−１は前記ランナー５に嵌合され、外輪４−２はスプリング７を介して多少揺動可能に軸受支持台８に固定されている。この軸受支持台８は前記軸受ブラケット２の上面に固定され、軸受ブラケット２により回転子軸３に作用する推力（回転子重量および負荷荷重）を支えるように構成されている。８−１は軸受支持台８の底部に形成した油道である。
【０００４】
９は油タンクであり、前記軸受ブラケット２とこの軸受ブラケット２の上面に同心状に油密に固定された一対の油タンク外周壁９−１および油タンク内周壁９−２とにより環状に形成されている。この油タンク９内に冷却媒体兼潤滑油１０を収容する。１１は潤滑油１０を冷却するための通水冷却器であり、軸受支持台８と同心状に複数本の環状の水冷管で構成されている。１２は油タンクの開口部を塞ぐ油タンクカバーである。
【０００５】
上記のように構成された立形回転電機の軸受装置の動作について説明する。回転電機の運転により回転子軸３およびランナー５が一体的に回転すると、軸受４の内輪４−１および転動体４−３は回転電機の推力すなわち回転子重量と負荷荷重とが加重された状態で回転するため、内輪４−１と転動体４−３、転動体４−３と外輪４−２との間に摩擦熱が生じる。
【０００６】
この軸受４の摩擦熱は潤滑油１０により吸熱される。吸熱により温度上昇した潤滑油１０は放射方向に流れ、通水冷却器１１により冷却される。この通水冷却器１１により冷却された潤滑油１０は、油タンク９の底部すなわち軸受支持台８の下部油道８−１を通って油タンク内周壁９−２側に移動し、再び軸受４の内部を通って通水冷却器１１により冷却される。この連続動作によって、ころがり軸受４の温度が所定の範囲内に維持される。
【０００７】
なお、回転電機の図示しない電機子コイル等の通電部で発生した熱も軸受ブラケット２を介して潤滑油１０に伝えられ、通水冷却器１１により冷却されるので、回転電機本体の温度上昇も防止されるようになっている。
【０００８】
【発明が解決しようとする課題】
以上のように構成された従来の軸受装置は、潤滑油の冷却を通水冷却部により冷却するように構成しているので、通水冷却部を構成する冷却管内に異物が混入して冷却管を詰まらせることの無いように浄化した冷却水を注入するように配慮するとか、冷却管に錆が発生しないように防錆加工を施すとかの配慮が必要であった。また、長年使用すると、冷却器取り付け部のパッキング部から漏水が生じるなどの問題点があった。
【０００９】
本発明は上記従来技術の欠点に鑑み、回転子軸に送風ファンを設けるとともに、回転子軸に装着したランナーおよびこのランナーを支える軸受を潤滑油中に浸漬する油タンクに放熱部を設け、この放熱部に送風ファンの冷却風を道部区風胴体を設けることにより、冷却水配管などの外部の付帯設備を必要とせずに、品質の高い安価な立形回転電機の軸受装置を得ることを目的とする。
【００１０】
【課題を解決するための手段】
上記の目的を達成するため、請求項１に係る立形回転電機の軸受装置の発明は、立形回転電機の回転子軸に装着したランナーと軸受支持台との間に軸受を設け、これらランナー、軸受および軸受支持台を油タンク内で潤滑油中に浸漬し回転子自重および負荷の荷重を支持するように構成した立形回転電機の軸受装置において、前記油タンクの外周壁に放熱部を設け、前記回転子軸に冷却ファンを嵌合し、この冷却ファンからの送風を前記油タンク外周壁に設けた放熱部に導く風胴体を設けたことを特徴とする。
この発明によれば、潤滑油を油タンク外周壁に設けた放熱部により空気冷却を十分行うことができる。
【００１１】
【発明の実施の形態】
以下、図を参照して本発明の実施の形態について説明する。なお、図２と同一部分には同一符号を、また関連する部分には添字を付けて対応関係を明瞭にしている。
【００１２】
図１は、本発明による立軸形回転電機の軸受装置の一実施の形態を示す断面図である。図１において、１は立軸形回転電機のフレームであり、２Ａはこのフレーム１の上端部に取り付けられ、回転子軸３を回転自在に支持する軸受４を固定した軸受ブラケットである。この軸受ブラケット２Ａは、従来の軸受ブラケット２とは構造的に異なっており、次に説明する５つの部材から構成されている。すなわち本発明で採用する軸受ブラケット２Ａは、回転子軸３により貫通され、前記油タンク９の底部を形成する円板状部材２−１と、この円板状部材２−１の下面に対して回転子軸３とほぼ同心状に固着され回転子軸方向に所定の長さＬを有する筒状部材２−２と、前記円板状部材２−１の下面において前記筒状部材２−２から放射方向に複数本配置され、厚み寸法がＬの梁（ビーム）部材２−３と、この複数本の梁部材２−３の先端部下面を一体的に結合するとともに、前記フレーム１に対してボルトで取り付けられる環状板部材２−４と、前記梁部材２−３の下面の特に筒状部材２−２と環状板部材２−４間を塞ぎ、回転電機本体の内部と軸受部とを隔離する隔離板部材２−５とから構成される。
【００１３】
なお、本実施の形態の場合、前記円板状部材２−１と、環状板部材２−４とは１枚の鋼鈑から切り出してそれぞれ形成したため、前記円板状部材２−１の外径寸法と環状板部材２−４の内径寸法とはほぼ等しくし、厚みも等しい寸法になっている。また、前記隔離板部材２−５を図示したように薄板で形成した理由は、円板状部材２−１のように大きな荷重がかからないということおよび、薄板の方が厚板よりも回転電機本体側の熱を後述する風道側に放熱するのに適しているからである。
【００１４】
ところで、前記回転子軸３は、前記軸受ブラケット２Ａを貫通して上部に突出した部分のほぼ中間部にランナー５を嵌合してランナー固定ナット６により固着している。なお、４、７、８および９は、それぞれ前述したスフェリカル軸受等の軸受、スプリング、軸受支持台および油タンクと同じものである。
【００１５】
本発明においては、この軸受支持台８の外周部に、軸受４の回転により放射方向に押し出された潤滑油が油タンク外周壁９−１に衝突した後、再び油道８−１を通って軸受４側に循環するように、潤滑油整流装置１３を取り付けている。この潤滑油整流装置１３は、前記軸受支持台８に固定された潤滑油飛散防止板１３−１および円板状に形成された潤滑油案内板１３−２、さらにこの潤滑油案内板１３−２の下面に放射方向に取り付けられた整流板１３−３とから構成されている。１４は油タンク外周壁９−１の外周面に溶着した放熱フィン等の放熱部である。
【００１６】
１２Ａは、前記油タンク９の開口部を塞ぐように油タンク外周壁９−１に固定した油タンクカバーであり、この油タンクカバー１２Ａの上面に案内軸受１５を載置し固定している。そして、前記回転子軸３の最上端部には外部から空気を吸気する吸込形の冷却ファン１６を冷却ファン固定ナット１７により取り付けている。
この冷却ファン１６は、主板１６−１と、この主板１６−１に放射状に等間隔で取り付けられた翼１６−２と、側板１６−３とから構成されている。
【００１７】
１８はこの冷却ファン１６から油タンク９までを一体的に覆う円筒状に形成された風胴体であり、前記軸受ブラケット２Ａの梁２−３に下端部を固定されている。
【００１８】
そして、この風胴体１８の上部外周面にはフィルタ付きの吸込み口１８−１を設け、内部には吸込み口１８−１から冷却ファン側板１６−３までの空間部を仕切って風道を形成する冷却空気案内板１８−２を取り付けている。さらにこの風胴体１８は軸受ブラケット２Ａの梁２−３相互間のしかも円板状部材２−１と隔離板部材２−５で形成した扇形空間部を上下に二分して風胴体１８の内部を外部に連通させる風道を形成するための冷却空気案内板１８−３を設けている。１８−４は冷却を終えた空気の排気口である。
【００１９】
以上のように構成した立形回転電機の軸受装置の動作について説明する。回転電機の運転により回転子軸３およびランナー５が一体的に回転すると、軸受４の内輪４−１および転動体４−３は回転電機の推力すなわち回転子重量と負荷荷重とが加重された状態で回転するため、内輪４−１と転動体４−３、転動体４−３と外輪４−２との間に摩擦熱が生じる。
【００２０】
この軸受４の摩擦熱は潤滑油１０により吸熱される。吸熱により温度上昇した潤滑油１０は、軸受４内輪、転動体の回転による遠心力で潤滑油整流装置１３の潤滑油案内板１３−２の上面を放射方向に流れ、油タンク外周壁９−１に衝突して油タンク外周壁９−１と熱交換して冷却される。そしてこの油タンク外周壁９−１との衝突により流れの向きを下に変え、整流板１３−３の整流作用により軸受支持台８に向けて流れ、油タンク内周壁９−２側に戻り、再び軸受４の潤滑および冷却に供される。
【００２１】
一方、前記冷却ファン１６の吸込作用により吸込口１８−１から吸込まれた外部の冷たい空気は、風胴体１８と油タンク外周壁９−１との間に形成された風道を上から下に通過する際、油タンク外周壁９−１自体および放熱フィン１４と熱交換し、これらを冷却する。ここで熱交換を終えた冷却空気は軸受ブラケット２Ａの冷却空気案内板１８−３で形成した風道を通り、最後に隔離板部材２−５を冷却して排気口１８−４から回転電機の外部に排気される。
【００２２】
以上の動作を連続して行うことにより、軸受４の温度を所定の範囲内に維持しつつ、回転電機のコイル部等の通電部からの熱も軸受ブラケット２Ａを介して冷却するので、回転電機本体の温度上昇も防止することができる。
【００２３】
なお、上記実施の形態では軸受冷却専用の冷却ファンを設けたが、回転電機の形式が全閉外扇形の場合は、回転電機本体冷却用外扇を利用して冷却風をブラケット下側の風道より吸気する構造を採用することができる。
【００２４】
また、油タンクの放熱部として、外周壁に放熱フィンを溶着する代りに、ヒートパイプなどの熱交換器を取り付けるようにしてもよい。
さらに、回転子軸に固着した吸込形冷却ファンの代りに、別に設置された別電源により駆動される冷却ファンで冷却空気を吹き込むように構成してもよい。
【００２５】
【発明の効果】
以上述べたように本発明によれば、立軸回転電機の推力を支える軸受の潤滑油を冷却する通水冷却器を不要としたので、冷却器を構成する配管の腐食や水洩れなどの不適合がなくなり、また、潤滑油を空冷することにより、通水冷却する場合に比べて部品製作も容易になる。この結果、軸受装置全体を安価に製作することができるとともに、信頼性の高い立形回転電機の軸受装置を提供することができる。
【図面の簡単な説明】
【図１】本発明による立形回転電機の軸受装置の一実施の形態を示す断面図。
【図２】従来の立形回転電機の軸受装置を示す断面図。
【符号の説明】
１…フレーム、２Ａ…軸受ブラケット、２−１…円板状部材、２−２…筒状部材、２−３…梁部材、２−４…環状板部材、２−５…隔離板部材、３…回転子軸、４…軸受、５…ランナー、６…ランナー固定ナット、７…スプリング、８…軸受支持台、９…油タンク、９−１…油タンク外周壁、９−２…油タンク内周壁、１０…潤滑油、１２…油タンクカバー、１３…潤滑油整流装置、１３−１…潤滑油飛散防止板、１３−２…潤滑油案内板、１３−３…整流板、１４…放熱フィン、１５…案内軸受、１６…吸込形冷却ファン、１６−１…主板、１６−２…翼、１６−３…側板、１７…冷却ファン固定ナット、１８…風胴体、１８−１…冷却空気吸込口、１８−２…冷却空気案内板、１８−３…冷却空気案内板、１８−４…排気口。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bearing device for a vertical shaft rotating electric machine, and more particularly to a bearing device for a vertical shaft rotating machine configured to cool lubricating oil by an air cooling fan.
[0002]
[Prior art]
FIG. 2 is a sectional view showing a bearing device of a conventional vertical shaft type rotating electric machine. In FIG. 2, reference numeral 1 denotes a frame of a vertical shaft type rotating electric machine, and 2 denotes a plate-shaped bearing bracket attached to an upper end of the frame 1. And is configured to support the bearing 4.
[0003]
The rotor shaft 3 is fitted with a runner 5 at the upper end protruding through the bearing bracket 2 and fixed by a runner fixing nut 6. The bearing 4 is formed of a rolling bearing such as a spherical bearing (thrust self-aligning roller bearing). The inner ring 4-1 is fitted to the runner 5, and the outer ring 4-2 is slightly swung via a spring 7. It is movably fixed to the bearing support 8. The bearing support 8 is fixed to the upper surface of the bearing bracket 2, and is configured to support a thrust (rotor weight and load) acting on the rotor shaft 3 by the bearing bracket 2. 8-1 is an oil passage formed at the bottom of the bearing support 8.
[0004]
Reference numeral 9 denotes an oil tank, which is formed annularly by the bearing bracket 2 and a pair of oil tank outer peripheral walls 9-1 and an oil tank inner peripheral wall 9-2 concentrically and oil-tightly fixed to the upper surface of the bearing bracket 2. Have been. A cooling medium / lubricating oil 10 is stored in the oil tank 9. Reference numeral 11 denotes a water-flow cooler for cooling the lubricating oil 10, which is constituted by a plurality of annular water cooling tubes concentrically with the bearing support 8. Reference numeral 12 denotes an oil tank cover for closing the opening of the oil tank.
[0005]
The operation of the bearing device of the vertical rotating electric machine configured as described above will be described. When the rotor shaft 3 and the runner 5 rotate integrally by the operation of the rotating electric machine, the inner ring 4-1 and the rolling element 4-3 of the bearing 4 are in a state in which the thrust of the rotating electric machine, that is, the weight of the rotor and the applied load are applied. , Frictional heat is generated between the inner ring 4-1 and the rolling element 4-3 and between the rolling element 4-3 and the outer ring 4-2.
[0006]
The friction heat of the bearing 4 is absorbed by the lubricating oil 10. The lubricating oil 10 whose temperature has risen due to heat absorption flows in the radial direction and is cooled by the through-flow cooler 11. The lubricating oil 10 cooled by the water cooler 11 moves to the oil tank inner peripheral wall 9-2 side through the bottom of the oil tank 9, that is, the lower oil passage 8-1 of the bearing support 8, and returns to the bearing 4. Is cooled by the through-flow cooler 11 through the inside of the. By this continuous operation, the temperature of the rolling bearing 4 is maintained within a predetermined range.
[0007]
In addition, heat generated in a current-carrying part such as an armature coil (not shown) of the rotating electric machine is also transmitted to the lubricating oil 10 via the bearing bracket 2 and cooled by the water-flow cooler 11, so that the temperature of the rotating electric machine body also increases. Is to be prevented.
[0008]
[Problems to be solved by the invention]
In the conventional bearing device configured as described above, the cooling of the lubricating oil is configured to be cooled by the water cooling unit. Care must be taken to inject cooling water that has been purified so as not to clog the cooling pipe, or to provide rust prevention processing so that rust does not occur in the cooling pipe. Further, when used for a long time, there is a problem that water leaks from a packing portion of a cooler mounting portion.
[0009]
In view of the drawbacks of the prior art, the present invention provides a blower fan on the rotor shaft, and provides a heat radiator in an oil tank for immersing a runner mounted on the rotor shaft and a bearing supporting the runner in lubricating oil. By providing a wind fuselage for the cooling air of the blower fan in the radiating section, it is possible to obtain a high-quality and inexpensive vertical rotary electric machine bearing device without the need for external auxiliary equipment such as cooling water piping. Aim.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an invention of a bearing device for a vertical rotating electric machine according to claim 1 is provided with a bearing between a runner mounted on a rotor shaft of the vertical rotating electric machine and a bearing support, and these runners are provided. In a bearing device of a vertical rotating electric machine configured such that a bearing and a bearing support are immersed in lubricating oil in an oil tank to support the weight of the rotor and the load of the load, a heat radiating portion is provided on an outer peripheral wall of the oil tank. A cooling fan fitted to the rotor shaft, and a wind tunnel body for guiding the air blown from the cooling fan to a heat radiating portion provided on the outer peripheral wall of the oil tank.
According to the present invention, air cooling can be sufficiently performed by the heat radiating portion provided on the outer peripheral wall of the oil tank with the lubricating oil.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 2 are denoted by the same reference numerals, and the related parts are provided with subscripts to make the correspondence clear.
[0012]
FIG. 1 is a sectional view showing an embodiment of a bearing device for a vertical shaft type rotating electric machine according to the present invention. In FIG. 1, reference numeral 1 denotes a frame of a vertical shaft type rotating electric machine, and reference numeral 2A denotes a bearing bracket fixed to a bearing 4 which is attached to an upper end of the frame 1 and rotatably supports a rotor shaft 3. This bearing bracket 2A is structurally different from the conventional bearing bracket 2, and is composed of the following five members. That is, the bearing bracket 2A employed in the present invention is penetrated by the rotor shaft 3 and forms a bottom of the oil tank 9 with respect to the disc-shaped member 2-1 and the lower surface of the disc-shaped member 2-1. A cylindrical member 2-2 fixed substantially concentrically to the rotor shaft 3 and having a predetermined length L in the rotor axial direction; and a cylindrical member 2-2 on the lower surface of the disk-shaped member 2-1. A plurality of beams (beams) 2-3 arranged in the radial direction and having a thickness of L and the lower surfaces of the distal ends of the plurality of beams 2-3 are integrally connected to each other. An annular plate member 2-4 attached by bolts and a lower surface of the beam member 2-3, particularly between the cylindrical member 2-2 and the annular plate member 2-4, are closed to isolate the inside of the rotary electric machine main body from the bearing. And a separator plate member 2-5.
[0013]
In the case of the present embodiment, since the disk-shaped member 2-1 and the annular plate member 2-4 are cut out from one steel plate and formed, respectively, the outer diameter of the disk-shaped member 2-1 is formed. The size is substantially equal to the inner diameter of the annular plate member 2-4, and the thickness is also equal. Further, the reason why the separating plate member 2-5 is formed of a thin plate as shown in the drawing is that a large load is not applied like the disk-shaped member 2-1 and that the thin plate is larger than the thick plate in the rotating electric machine body. This is because it is suitable for dissipating heat on the side to the wind path side described later.
[0014]
By the way, the rotor shaft 3 is fitted with a runner 5 at a substantially middle part of a part penetrating the bearing bracket 2A and protruding upward, and is fixed by a runner fixing nut 6. Reference numerals 4, 7, 8 and 9 are the same as the above-described bearings such as the spherical bearings, springs, bearing supports, and oil tanks.
[0015]
In the present invention, the lubricating oil radially extruded by the rotation of the bearing 4 collides against the outer peripheral wall 9-1 of the bearing support 8 and then passes through the oil passage 8-1 again. A lubricating oil rectifier 13 is mounted so as to circulate on the bearing 4 side. The lubricating oil rectifier 13 includes a lubricating oil scattering prevention plate 13-1 fixed to the bearing support 8 and a disc-shaped lubricating oil guide plate 13-2, and a lubricating oil guide plate 13-2. And a rectifying plate 13-3 radially attached to the lower surface of the rectifying plate 13-3. Reference numeral 14 denotes a heat radiating portion such as a heat radiating fin welded to the outer peripheral surface of the oil tank outer peripheral wall 9-1.
[0016]
Reference numeral 12A denotes an oil tank cover fixed to the oil tank outer peripheral wall 9-1 so as to close the opening of the oil tank 9, and a guide bearing 15 is placed and fixed on the upper surface of the oil tank cover 12A. A suction-type cooling fan 16 for sucking air from outside is attached to a top end of the rotor shaft 3 by a cooling fan fixing nut 17.
The cooling fan 16 includes a main plate 16-1, wings 16-2 radially attached to the main plate 16-1 at equal intervals, and side plates 16-3.
[0017]
Reference numeral 18 denotes a cylindrical wind tunnel body integrally covering from the cooling fan 16 to the oil tank 9, and has a lower end fixed to the beam 2-3 of the bearing bracket 2A.
[0018]
A suction port 18-1 with a filter is provided on the upper outer peripheral surface of the wind tunnel body 18, and a space from the suction port 18-1 to the cooling fan side plate 16-3 is partitioned inside to form an air passage. A cooling air guide plate 18-2 is attached. Further, the wind tunnel body 18 vertically divides a fan-shaped space formed between the beams 2-3 of the bearing bracket 2A and formed by the disc-shaped member 2-1 and the separating plate member 2-5 into upper and lower parts, so that the interior of the wind tunnel body 18 is divided. A cooling air guide plate 18-3 for forming an air passage communicating with the outside is provided. Reference numeral 18-4 denotes an exhaust port for the air after cooling.
[0019]
The operation of the bearing device for a vertical rotating electric machine configured as described above will be described. When the rotor shaft 3 and the runner 5 rotate integrally by the operation of the rotating electric machine, the inner ring 4-1 and the rolling element 4-3 of the bearing 4 are in a state in which the thrust of the rotating electric machine, that is, the weight of the rotor and the applied load are applied. , Frictional heat is generated between the inner ring 4-1 and the rolling element 4-3 and between the rolling element 4-3 and the outer ring 4-2.
[0020]
The friction heat of the bearing 4 is absorbed by the lubricating oil 10. The lubricating oil 10 whose temperature has risen due to heat absorption flows radially on the upper surface of the lubricating oil guide plate 13-2 of the lubricating oil rectifier 13 due to centrifugal force generated by the rotation of the inner ring of the bearing 4 and the rolling elements, and the outer peripheral wall 9-1 of the oil tank. And exchanges heat with the oil tank outer peripheral wall 9-1 to be cooled. The collision with the oil tank outer peripheral wall 9-1 changes the flow direction downward, flows toward the bearing support 8 by the rectifying action of the rectifying plate 13-3, and returns to the oil tank inner peripheral wall 9-2 side. The bearing 4 is again provided for lubrication and cooling.
[0021]
On the other hand, the external cold air sucked from the suction port 18-1 by the suction action of the cooling fan 16 moves the wind path formed between the wind tunnel body 18 and the oil tank outer peripheral wall 9-1 from top to bottom. At the time of passing, heat exchange is performed with the oil tank outer peripheral wall 9-1 itself and the radiation fins 14, and these are cooled. Here, the cooling air that has completed the heat exchange passes through the air passage formed by the cooling air guide plate 18-3 of the bearing bracket 2A, and finally cools the separator plate member 2-5, and the cooling air from the exhaust port 18-4 is supplied to the rotating electric machine. It is exhausted outside.
[0022]
By continuously performing the above operations, the heat from the current-carrying portion such as the coil portion of the rotating electric machine is also cooled through the bearing bracket 2A while maintaining the temperature of the bearing 4 within a predetermined range. The temperature rise of the main body can also be prevented.
[0023]
In the above embodiment, a cooling fan dedicated to bearing cooling is provided. However, when the type of the rotating electric machine is a fully-closed external fan type, the cooling air is supplied to the air passage below the bracket using the cooling fan of the rotating electric machine body. It is possible to adopt a structure for more intake.
[0024]
Further, a heat exchanger such as a heat pipe may be attached as the heat radiating portion of the oil tank instead of welding the heat radiating fins to the outer peripheral wall.
Further, instead of the suction-type cooling fan fixed to the rotor shaft, the cooling air may be blown by a cooling fan driven by another power source installed separately.
[0025]
【The invention's effect】
As described above, according to the present invention, a water-flow cooler that cools the lubricating oil of the bearing that supports the thrust of the vertical rotating electric machine is not required, so that inconsistencies such as corrosion and water leakage of the piping constituting the cooler are eliminated. By cooling the lubricating oil by air, it becomes easier to manufacture parts as compared with the case of cooling by water. As a result, the entire bearing device can be manufactured at low cost, and a highly reliable bearing device for a vertical rotating electric machine can be provided.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of a bearing device for a vertical rotating electric machine according to the present invention.
FIG. 2 is a sectional view showing a bearing device of a conventional vertical rotating electric machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Frame, 2A ... Bearing bracket, 2-1 ... Disc-shaped member, 2-2 ... Cylindrical member, 2-3 ... Beam member, 2-4 ... Annular plate member, 2-5 ... Separating plate member, 3 ... Rotor shaft, 4 ... Bearing, 5 ... Runner, 6 ... Runner fixing nut, 7 ... Spring, 8 ... Bearing support, 9 ... Oil tank, 9-1 ... Oil tank outer peripheral wall, 9-2 ... In the oil tank Peripheral wall, 10: lubricating oil, 12: oil tank cover, 13: lubricating oil rectifying device, 13-1: lubricating oil scattering prevention plate, 13-2: lubricating oil guide plate, 13-3: rectifying plate, 14: radiation fin , 15: Guide bearing, 16: Suction type cooling fan, 16-1: Main plate, 16-2: Wing, 16-3: Side plate, 17: Cooling fan fixing nut, 18: Wind fuselage, 18-1: Cooling air suction Port, 18-2: cooling air guide plate, 18-3: cooling air guide plate, 18-4: exhaust port.

Claims (1)

立形回転電機の回転子軸に装着したランナーと軸受支持台との間に軸受を設け、これらランナー、軸受および軸受支持台を油タンク内で潤滑油中に浸漬し回転子自重および負荷の荷重を支持するように構成した立形回転電機の軸受装置において、
前記油タンクの外周壁に放熱部を設け、前記回転子軸に冷却ファンを嵌合し、この冷却ファンからの送風を前記油タンク外周壁に設けた放熱部に導く風胴体を設けたことを特徴とする立形回転電機の軸受装置。A bearing is provided between a runner mounted on the rotor shaft of a vertical rotating electric machine and a bearing support, and the runner, bearing and bearing support are immersed in lubricating oil in an oil tank and the rotor's own weight and the load of the load are applied. In a bearing device of a vertical rotating electric machine configured to support
A heat radiator is provided on the outer peripheral wall of the oil tank, a cooling fan is fitted to the rotor shaft, and a wind tunnel body that guides air blown from the cooling fan to a radiator provided on the oil tank outer peripheral wall is provided. Characteristic bearing device for vertical rotating electric machines.
JP2002244786A 2002-08-26 2002-08-26 Bearing device for vertical rotary electric machine Expired - Fee Related JP4253478B2 (en)

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CN104242530A (en) * 2014-10-13 2014-12-24 中电电机股份有限公司 Oil-lubricating rolling bearing assembly structure of vertical high-thrust motor
CN107769454A (en) * 2017-12-04 2018-03-06 江苏航天动力机电有限公司 New vertical machine thrust and guide bearing assembling structure
WO2018236154A1 (en) * 2017-06-21 2018-12-27 현대일렉트릭앤에너지시스템(주) Thrust bearing cooling device
KR20190037221A (en) * 2019-03-29 2019-04-05 현대일렉트릭앤에너지시스템(주) Cooling apparatus for thrust bearing
CN113198968A (en) * 2021-06-01 2021-08-03 河北国智机械设备制造有限公司 Cooling oil spraying device for cold heading machining of nuts

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Publication number Priority date Publication date Assignee Title
CN104242530A (en) * 2014-10-13 2014-12-24 中电电机股份有限公司 Oil-lubricating rolling bearing assembly structure of vertical high-thrust motor
US20200056663A1 (en) * 2017-06-21 2020-02-20 Hyundai Electric & Energy Systems Co., Ltd. Thrust bearing cooling device
WO2018236154A1 (en) * 2017-06-21 2018-12-27 현대일렉트릭앤에너지시스템(주) Thrust bearing cooling device
KR20180138455A (en) * 2017-06-21 2018-12-31 현대일렉트릭앤에너지시스템(주) Cooling apparatus for thrust bearing
CN110770459A (en) * 2017-06-21 2020-02-07 现代电力与能源系统株式会社 Thrust bearing cooling device
KR102194121B1 (en) * 2017-06-21 2020-12-22 현대일렉트릭앤에너지시스템(주) Cooling apparatus for thrust bearing
US10920829B2 (en) 2017-06-21 2021-02-16 Hyundai Electric & Energy Systems Co., Ltd. Thrust bearing cooling device
CN107769454A (en) * 2017-12-04 2018-03-06 江苏航天动力机电有限公司 New vertical machine thrust and guide bearing assembling structure
CN107769454B (en) * 2017-12-04 2024-03-15 江苏航天动力机电有限公司 Thrust and guide bearing assembly structure of vertical motor
KR20190037221A (en) * 2019-03-29 2019-04-05 현대일렉트릭앤에너지시스템(주) Cooling apparatus for thrust bearing
KR102194122B1 (en) * 2019-03-29 2020-12-22 현대일렉트릭앤에너지시스템(주) Cooling apparatus for thrust bearing
CN113198968A (en) * 2021-06-01 2021-08-03 河北国智机械设备制造有限公司 Cooling oil spraying device for cold heading machining of nuts
CN113198968B (en) * 2021-06-01 2022-05-24 河北国智机械设备制造有限公司 Cooling oil spraying device for cold heading machining of nuts

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