JPH01117635A - Rotor of rotary electric machine - Google Patents
Rotor of rotary electric machineInfo
- Publication number
- JPH01117635A JPH01117635A JP27608187A JP27608187A JPH01117635A JP H01117635 A JPH01117635 A JP H01117635A JP 27608187 A JP27608187 A JP 27608187A JP 27608187 A JP27608187 A JP 27608187A JP H01117635 A JPH01117635 A JP H01117635A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- centrifugal fan
- fan
- radial
- radial position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 10
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241000555745 Sciuridae Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分針〕
この発明は、巻線形の回転子構造の回転電機の通風冷却
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Minute Hand] The present invention relates to ventilation cooling of a rotating electric machine having a wound rotor structure.
第４図は例えば実開昭５４−２６００６ 号に示された
従来の回転電機の通風冷却方式を示す断面図であり、図
において（１）は回転子の回転軸、（２）はロータスポ
ーク、（３）は半径方向通風ダクトを有する回転子鉄心
、（４）は前記回転子鉄心（３）の外周側に設けられた
スロットの中に収納される二次巻線、（５）は遠心ファ
ン、（６）は固定子巻線、（７）は前記回転子鉄心（３
）と同じく半径方向通風ダクトを有する１定子鉄心であ
る。FIG. 4 is a cross-sectional view showing a conventional ventilation cooling system for a rotating electrical machine, as shown in, for example, Utility Model Application No. 54-26006. In the figure, (1) is the rotation axis of the rotor, (2) is the rotor spoke, (3) is a rotor core having a radial ventilation duct, (4) is a secondary winding housed in a slot provided on the outer circumferential side of the rotor core (3), and (5) is a centrifugal fan. , (6) is the stator winding, and (7) is the rotor core (3).
) is a single stator core with radial ventilation ducts.
次に動作について説明する。回転子鉄心（３）に設けら
れた半径方向ダクトの回転時における外周速と同周速と
の差によるファン効果および遠心ファン（５）のファン
効果により、冷却風は、一部はロータスポーク（２）の
上・下部通風穴より流入し、回転子鉄心（３）の半径方
向ダクトを通過し、さらに固定子鉄心（７）の半径方向
ダクトを通過した後機外へ放出される。Next, the operation will be explained. Due to the fan effect caused by the difference between the outer peripheral speed and the peripheral speed during rotation of the radial duct provided in the rotor core (3) and the fan effect of the centrifugal fan (5), some of the cooling air flows through the rotor spokes ( 2) flows in through the upper and lower ventilation holes, passes through the radial duct of the rotor core (3), and further passes through the radial duct of the stator core (7) before being discharged to the outside of the machine.
また冷却風の他の一部は遠心ファン（５）を通過し、そ
の一部は固定子巻線（６）のコイルエンドを通過して機
外へ、他の一部は回鉄心鉄心（３）と固定子鉄心（７）
の間にある空隙部に上・下部より流入し回転子鉄心（３
）の半径方向ダクトを通過してきた前記冷却風と混合こ
れて、固定子鉄心（７）の半径方向ダクトへ流入した後
機外へ放出される。この冷却風は第３図の図中に矢印で
示されるような流れとなり、運転時の発熱部である回転
子鉄心（３）、二次巻線（４）、固定子巻線（６）およ
び固定子鉄心（７）をそれぞれ冷却した後、機外へ放出
される事となる。The other part of the cooling air passes through the centrifugal fan (5), part of it passes through the coil end of the stator winding (6) and goes out of the machine, and the other part passes through the rotating iron core (3). ) and stator core (7)
The rotor core (3
) is mixed with the cooling air that has passed through the radial duct of the stator core (7), flows into the radial duct of the stator core (7), and is then discharged to the outside of the machine. This cooling air flows as shown by the arrows in Figure 3, and flows through the rotor core (3), secondary winding (4), stator winding (6), which is the heat generating part during operation. After each stator core (7) has been cooled, it will be discharged outside the machine.
従来の回転電機の通風冷却構造は以上のように構成され
ていたので、回転速度が高速の時は、遠心ファン（５）
および回転子鉄心（３）の半径方向ダクトのファン効果
が大キく、必要以上に冷却風が流れ、風損が大きくなる
。また低速時には、前記ファン効果が小さいために、発
熱部を冷却するのに十分な風量が得られなくなるなどの
問題点があった。The conventional ventilation cooling structure of rotating electric machines was configured as described above, so when the rotation speed is high, the centrifugal fan (5)
Also, the fan effect of the radial duct of the rotor core (3) is large, causing more cooling air to flow than necessary and increasing wind loss. Furthermore, at low speeds, the fan effect is small, so there is a problem that a sufficient amount of air cannot be obtained to cool the heat generating part.
この発明は上記のような問題点を解消するためになされ
たもので、回転電機の低速時の温度上昇をおさえるとと
もに、高速時の風損低減ができる通風冷却装置を提供す
る事を目的とする。This invention was made to solve the above-mentioned problems, and its purpose is to provide a ventilation cooling device that can suppress the temperature rise of a rotating electric machine at low speeds and reduce windage loss at high speeds. .
この発明に係る回転電機の通風冷却装置は、回転速度の
変化に応じて、遠心ファンの半径方向位置を、変化する
事により、冷却風１を調整できるようにしたものである
。The ventilation cooling device for a rotating electric machine according to the present invention is capable of adjusting the cooling air 1 by changing the radial position of a centrifugal fan in accordance with changes in rotational speed.
この発明における回転速度の変化に応じた遠心ファンの
半径方向位置の調整は、低速回転時には、必要ファン圧
力が得にくいため、ファンの半径方向位置を外周側に移
動する事によって冷却風量を大キ＜シ、高速回転時には
ファン圧力が必要以上に大きくなる事により冷却風量が
出すぎるために、ファンの半径方向位置を内周側に移動
させ冷却風量を押える。Adjustment of the radial position of the centrifugal fan according to changes in rotational speed in this invention is difficult to obtain the required fan pressure when rotating at low speed, so by moving the radial position of the fan toward the outer circumference, the cooling air volume can be increased. ＜Si、During high-speed rotation, the fan pressure becomes higher than necessary and the cooling air volume is too high, so the radial position of the fan is moved to the inner circumferential side to suppress the cooling air volume.
以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図において、（８）は回転軸（１）に直結さｎた回
転計、（９）は、回転子に取り付られた遠心ファン（５
）の半径方向位置を移動できるファン支持台である。In Fig. 1, (8) is a tachometer directly connected to the rotating shaft (1), and (9) is a centrifugal fan (5) attached to the rotor.
) is a fan support that can be moved in the radial direction.
第２図は断面１−１線における断面図。第３図は。FIG. 2 is a sectional view taken along the line 1-1. Figure 3 is.
ファン位置の調整方法の制御方式を示す。The control method for adjusting the fan position is shown.
次に動作について説明する。回転計（８）によ−て検出
された回転速度信号は、スリップリングを介してファン
支持台（９）内部に収納されたコントローラαＧに伝達
される。このコントローラαＯにはあらかじめ回転速度
に対応した最適ファンの半径方向位置の特性が入力され
ており、ファン位置の検出装置から伝達されるファン付
量信号と回転速度に対応した前記最適ファン位置の差異
により、同じく前記ファン支持台（９）内部に収納され
たファン位置調整機構（２）に指冷が送られ、前記遠心
ファン（５）の半径方向位置が運転時の回転速度に対応
した最適のものになる。Next, the operation will be explained. The rotational speed signal detected by the tachometer (8) is transmitted via the slip ring to the controller αG housed inside the fan support base (9). The characteristics of the optimal fan radial position corresponding to the rotational speed are input into this controller αO in advance, and the difference between the fan attachment amount signal transmitted from the fan position detection device and the optimal fan position corresponding to the rotational speed is inputted in advance to this controller αO. As a result, finger cooling is sent to the fan position adjustment mechanism (2) also housed inside the fan support stand (9), and the radial position of the centrifugal fan (5) is adjusted to the optimum position corresponding to the rotational speed during operation. Become something.
なお、上記実施例では、巻線形誘導機の場合について説
明したが、かご形誘導機の場合でも適用可能で上記実施
例と同様の効果を奏する。In the above embodiment, the case of a wound induction machine has been described, but the present invention can also be applied to a squirrel cage induction machine, and the same effects as in the above embodiment can be obtained.
以上のように、この発明によれば運転時の回転速度に対
応した最適のファン半径方向位置に調整できるように構
成したので広い運転速度領域で回転１１機のｍ度上昇を
押えつつ、風損を低減できる効果がある。As described above, according to the present invention, the fan can be adjusted to the optimum radial position corresponding to the rotational speed during operation, so that wind loss can be suppressed while suppressing the increase in rotation by 11 m degrees over a wide operating speed range. It has the effect of reducing
第１図は、この発明の一実施例による回転電機の通風冷
却装置を示す断面図、第２図は第１図のト」線における
断面図、第３図は、遠心ファンの半径方向位置の調整の
制御方法を示す概念図、第４図は従来の通風冷却装置を
示す断面図である。
図において、（１）は回転軸、（２１はロータスポーク
、（３］は回転子鉄心、（４）は二次巻締、（５］は遠
心ファン、（６）は固定子巻線、（７）は固定子鉄心、
（８）は回転計、（９）はファン支持台である。
なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a sectional view showing a ventilation cooling device for a rotating electric machine according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line T in FIG. 1, and FIG. FIG. 4 is a conceptual diagram showing an adjustment control method, and is a sectional view showing a conventional ventilation cooling device. In the figure, (1) is the rotating shaft, (21 is the rotor spoke, (3) is the rotor core, (4) is the secondary seaming, (5) is the centrifugal fan, (6) is the stator winding, ( 7) is the stator core,
(8) is a tachometer, and (9) is a fan support stand. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
を有するロータスポークと、このロータスポークの外周
に配置され半径方向通風ダクトが形成された環状の回転
子鉄心と、この鉄心の外周に設けられたスロットの中に
配置された二次巻線と回転子の軸方向の両面または片面
に配置された遠心ファンとからなる回転子、および前記
回転子の外周に空隙を介して配設された固定子を有する
ものにおいて前記回転子の回転速度の変化に応じて、前
記遠心ファンの半径方向位置を変える事を特徴とする回
転電機の回転子。A rotor spoke coupled to a rotating shaft and having ventilation holes on both or one side in the axial direction, an annular rotor core arranged around the outer periphery of the rotor spoke and having a radial ventilation duct formed therein, and a rotor core arranged around the outer periphery of the core. A rotor consisting of a secondary winding disposed in a slot provided in the rotor and a centrifugal fan disposed on both or one side of the rotor in the axial direction, and a centrifugal fan disposed on the outer periphery of the rotor through a gap. A rotor for a rotating electrical machine having a stator, characterized in that the radial position of the centrifugal fan is changed in accordance with changes in the rotational speed of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27608187A JPH01117635A (en) | 1987-10-30 | 1987-10-30 | Rotor of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27608187A JPH01117635A (en) | 1987-10-30 | 1987-10-30 | Rotor of rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01117635A true JPH01117635A (en) | 1989-05-10 |
Family
ID=17564539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27608187A Pending JPH01117635A (en) | 1987-10-30 | 1987-10-30 | Rotor of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01117635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11011964B2 (en) | 2016-05-19 | 2021-05-18 | Central Japan Railway Company | Cage induction motor |
-
1987
- 1987-10-30 JP JP27608187A patent/JPH01117635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11011964B2 (en) | 2016-05-19 | 2021-05-18 | Central Japan Railway Company | Cage induction motor |
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