JPS6034338B2 - rotating electric machine - Google Patents
rotating electric machineInfo
- Publication number
- JPS6034338B2 JPS6034338B2 JP98479A JP98479A JPS6034338B2 JP S6034338 B2 JPS6034338 B2 JP S6034338B2 JP 98479 A JP98479 A JP 98479A JP 98479 A JP98479 A JP 98479A JP S6034338 B2 JPS6034338 B2 JP S6034338B2
- Authority
- JP
- Japan
- Prior art keywords
- slot
- core
- cooling hole
- rotating electric
- cooling
- 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.)
- Expired
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Description
【発明の詳細な説明】
本発明は固定子または回転子の軸方向に冷却孔を有する
回転電機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating electric machine having cooling holes in the axial direction of a stator or rotor.
一般の回転電機は従来固定子または回転子の鉄心の半径
方向に設けた通風ダクトに通風し冷却を行なっていた。Conventionally, general rotating electric machines are cooled by ventilation through ventilation ducts provided in the radial direction of the iron core of the stator or rotor.
しかしながらかかる構造では回転電機の重量低減に寄与
する必要な通風冷却面積が得られないので、近年は鉄心
の軸万向に通風冷却孔を設けて通風冷却面積を増加し、
固定子または回転子のコアバックにおける鉄損、および
スロット内に発生する銅損を冷却するようになってきた
。この輔方向の通風冷却孔は発生熱源の大なる部分、す
なわち固定子または回転子のスロットに近い方が温度上
昇を低下するのに寄与するので、スロット近辺に軸万向
の通風冷却孔を多数設けている。このことは、電気的に
は孔のため有効コア長が減少し、磁束密度が増加するの
で鉄損が増加し、孔のため磁路長が長くなり、励磁力が
増加して、前者は効率が低下、後者は力率が低下するな
どの欠点があった。本発明は上記欠点に鑑みなされたも
ので、電気的特性を良好に保つように固定子または回転
子の鞄方向に冷却孔を設けた回転電機を提供することを
目的とする。However, with this structure, it is not possible to obtain the necessary ventilation cooling area that contributes to the weight reduction of rotating electric machines, so in recent years, ventilation cooling holes are provided in all directions of the axis of the iron core to increase the ventilation cooling area.
Iron loss in the stator or rotor core back and copper loss occurring in the slots have been cooled. This ventilation cooling hole in the direction of the shaft contributes to reducing the temperature rise near the majority of the generated heat source, that is, the slot of the stator or rotor, so a large number of ventilation cooling holes in the direction of the axis are installed near the slot. It is set up. Electrically, this means that the effective core length decreases due to the holes, the magnetic flux density increases, so iron loss increases, and the magnetic path length increases due to the holes, increasing the excitation force, and the former is less efficient. The latter had disadvantages such as a decrease in power factor. The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide a rotating electric machine in which cooling holes are provided in the direction of the stator or rotor in order to maintain good electrical characteristics.
以下本発明を図面に示す一実施例について説明する。An embodiment of the present invention shown in the drawings will be described below.
図において、１は固定子鉄心、ｌａは固定子鉄心１の内
径側に配設したスロット、ｌｂはスロットｌａ間の歯、
ｌｃはスロットｌａの底と固定子鉄心１の外周面との間
に形成されたコアバック、２は回転子鉄心、２ａは回転
子鉄心２の外蓬側に配設したスロット、２ｂはスロット
２ａ間の歯、２ｃはスロット２ａの底と回転子鉄心２の
内周面との間に形成されたコァバック、３は固定子鉄心
１に設けた藤方向の冷却孔、４は回転子鉄心２に設けた
軸万向の冷却孔である。Ｓ，は固定子鉄心１のスロット
ｌａの深さ、Ｓ２は歯ｌｂの歯中であって歯ｌｂの中の
小さい方から１／＄，の位置における寸法、Ｓ３はコア
バックｌｃの寸法、Ｓ４はスロットｌａの底部と冷却孔
３の中心までの径万向の寸法、Ｓ５はスロットｌａの底
部と冷却孔３の外律端部との間の径方向の寸法、Ｒ，は
回転子鉄心２のスロット２ａの深さ、Ｒ２は歯２ｂの歯
中であって歯２ｂの中の小さい方から１／双，の位置に
おける寸法、Ｒ３はコアバック２ｃの寸法、Ｒ４はスロ
ット２ａの底部と冷却孔４の中心までの蓬方向の寸法、
Ｒ５はスロット２ａの底部と冷却孔４の外雀端部との間
の径方向の寸法である。しかして一般にＳ３はＳ，の０
．５〜１．５倍であり、冷却孔３の中心は歯ｌｂの中心
線上でＳ４は１′偽３以上、Ｓ５は１′＄２以上の位置
に設け、Ｒ３はＲ，の０．５〜１．３音であり、冷却孔
４の中心は歯２ｂの中心線上でＲ４は１／２Ｒ３以上、
Ｒ５は１／２Ｒ２以上の位置に設けてある。次に作用を
説明する。In the figure, 1 is a stator core, la is a slot provided on the inner diameter side of the stator core 1, lb is a tooth between slots la,
lc is a core back formed between the bottom of the slot la and the outer peripheral surface of the stator core 1, 2 is a rotor core, 2a is a slot provided on the outer side of the rotor core 2, and 2b is a slot 2a 2c is a core back formed between the bottom of the slot 2a and the inner circumferential surface of the rotor core 2, 3 is a cooling hole provided in the stator core 1 in the wisteria direction, and 4 is a core back formed in the rotor core 2. Cooling holes are provided in all directions. S, is the depth of the slot la of the stator core 1, S2 is the dimension at the position of 1/$ from the smaller tooth lb within the tooth lb, S3 is the dimension of the core back lc, S4 is the radial dimension between the bottom of the slot la and the center of the cooling hole 3, S5 is the radial dimension between the bottom of the slot la and the outer edge of the cooling hole 3, and R is the rotor core 2 The depth of the slot 2a, R2 is the dimension at the position of 1/2 from the smaller tooth 2b in the tooth 2b, R3 is the dimension of the core back 2c, R4 is the bottom of the slot 2a and the cooling Dimension in the vertical direction to the center of hole 4,
R5 is the radial dimension between the bottom of the slot 2a and the outer sparrow end of the cooling hole 4. However, in general, S3 is 0 of S,
．． 5 to 1.5 times, the center of the cooling hole 3 is on the center line of the tooth lb, S4 is provided at a position of 1' false 3 or more, S5 is provided at a position of 1' $2 or more, and R3 is 0.5 to 1.5 of R. 1.3 sounds, the center of the cooling hole 4 is on the center line of the tooth 2b, and R4 is 1/2R3 or more,
R5 is provided at a position of 1/2R2 or more. Next, the effect will be explained.
冷却孔３は歯ｌｂの中心線上でスロットｌａの底と冷却
孔３の外径端部との間の径万向の寸法Ｓ５は歯ｌｂの歯
中Ｓ２の１′２より大きいので、歯ｌｂの磁束はコアバ
ツクｌｃで冷却孔３で２分割されても滋路が大きく、発
生する鉄損は歯ｌｂに発生する鉄損と等価またはそれ以
上となり、効率の低減は軽減することができる。しかし
て冷却孔３によって冷却面積が増加したのでスロットｌ
ａ内で発生する銅損の一部を放熱するので温度上昇は低
下する。さらに冷却孔３の中心はコアバック２ｃの寸法
Ｓ３の１′２以上なので磁路長は長くならず力率が低下
することはない。すなわち冷却効果は上昇し、効率およ
び力率の電気的特性を良好に保つことができる。冷却孔
４についても同様なので説明は省略する。なお冷却孔は
固定子または回転子の何れか一方に設けたものであって
もよいことは勿論である。以上の様に本発説明によれば
回転電機のコァバックがスロット深さの０．５〜１．５
倍の固定子または回転子の何れか一方の鉄心に冷却孔を
コアバックの歯の中心線上で、スロットの底部と冷却孔
までの径方向の寸法をコアバックの１／２以上とし、且
つスロットの底部と冷却孔の外蚤端部との間の径万向の
寸法を歯中の１′２以上の位置に設けるようにしたので
、冷却効果は大になり、且つ効率および力率の電気的特
性を良好に保つことができるなどのすぐれた効果がある
。The cooling hole 3 has a radial dimension S5 in all directions between the bottom of the slot la and the outer diameter end of the cooling hole 3 on the center line of the tooth lb, which is larger than 1'2 of the mid-tooth S2 of the tooth lb. Even if the magnetic flux is divided into two by the cooling hole 3 in the core back lc, the flow path is large, and the iron loss that occurs is equal to or greater than the iron loss that occurs in the tooth lb, and the reduction in efficiency can be alleviated. However, since the cooling area has been increased by cooling hole 3, slot l
Since part of the copper loss generated within a is radiated, the temperature rise is reduced. Furthermore, since the center of the cooling hole 3 is 1'2 or more of the dimension S3 of the core back 2c, the magnetic path length does not become long and the power factor does not decrease. That is, the cooling effect is increased, and electrical characteristics such as efficiency and power factor can be kept good. The same applies to the cooling holes 4, so a description thereof will be omitted. It goes without saying that the cooling holes may be provided in either the stator or the rotor. As mentioned above, according to the present invention, the core back of the rotating electric machine is 0.5 to 1.5 of the slot depth.
The cooling holes in the iron core of either the stator or the rotor should be placed on the center line of the teeth of the core back, and the radial dimension from the bottom of the slot to the cooling hole should be 1/2 or more of the core back, and the slot Since the radial dimension between the bottom of the cooling hole and the outer end of the cooling hole is set at a position of 1'2 or more in the tooth, the cooling effect is large, and the efficiency and power factor of the electric It has excellent effects such as being able to maintain good physical properties.
図は本発明の回転電機の一実施例を示す固定子および回
転子の正面図である。
１・…・・固定子、ｌａ・・・・・・スロット、ｌｂ…
・・・歯、ｌｃ・・・・・・コアバック、２・・・・・
・回転子、２ａ・・・…スロット、２ｂ……歯、２ｃ…
…コアバック、３・・・・・・冷却孔、４…・・・冷却
孔。The figure is a front view of a stator and a rotor showing an embodiment of a rotating electric machine of the present invention. 1... Stator, la... Slot, lb...
...teeth, lc...core back, 2...
・Rotor, 2a...Slot, 2b...Teeth, 2c...
... Core back, 3 ... Cooling hole, 4 ... Cooling hole.
Claims (1)
定子鉄心または回転子鉄心を有する回転電機において、
前記鉄心の少なくとも何れか一方に冷却孔を、コアバツ
クの歯の中心線上で、スロツトの底部と冷却孔の中心ま
での径方向の寸法をコアバツクの１／２以上とし、且つ
スロツトの底部と冷却孔の外径端部との間の径方向の寸
法を歯巾の１／２以上とする位置に設けたことを特徴と
する回転電機。1. In a rotating electric machine having a stator core or rotor core whose core back is 0.5 to 1.5 times the slot depth,
A cooling hole is provided in at least one of the iron cores, and the radial dimension from the bottom of the slot to the center of the cooling hole is 1/2 or more of the core back on the center line of the teeth of the core back, and the bottom of the slot and the cooling hole are A rotating electric machine characterized in that the rotating electrical machine is provided at a position where the radial dimension between the outer diameter end and the outer diameter end is 1/2 or more of the tooth width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP98479A JPS6034338B2 (en) | 1979-01-11 | 1979-01-11 | rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP98479A JPS6034338B2 (en) | 1979-01-11 | 1979-01-11 | rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5594548A JPS5594548A (en) | 1980-07-18 |
| JPS6034338B2 true JPS6034338B2 (en) | 1985-08-08 |
Family
ID=11488856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP98479A Expired JPS6034338B2 (en) | 1979-01-11 | 1979-01-11 | rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034338B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375718A (en) * | 2014-08-28 | 2016-03-02 | 上海日立电器有限公司 | Rotor/stator punching sheet assembly of asynchronous induction motor and asynchronous induction motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012061270A2 (en) * | 2010-11-03 | 2012-05-10 | Ramu, Inc. | Noise reduction structures for electrical machines |
-
1979
- 1979-01-11 JP JP98479A patent/JPS6034338B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375718A (en) * | 2014-08-28 | 2016-03-02 | 上海日立电器有限公司 | Rotor/stator punching sheet assembly of asynchronous induction motor and asynchronous induction motor |
| CN105375718B (en) * | 2014-08-28 | 2018-04-17 | 上海海立电器有限公司 | The rotor punching component and asynchronous induction motor of asynchronous induction motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5594548A (en) | 1980-07-18 |
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