JPH0652977B2 - Air duct of rotating electric machine - Google Patents

Air duct of rotating electric machine

Info

Publication number
JPH0652977B2
JPH0652977B2 JP5844685A JP5844685A JPH0652977B2 JP H0652977 B2 JPH0652977 B2 JP H0652977B2 JP 5844685 A JP5844685 A JP 5844685A JP 5844685 A JP5844685 A JP 5844685A JP H0652977 B2 JPH0652977 B2 JP H0652977B2
Authority
JP
Japan
Prior art keywords
electric machine
contact plate
air duct
core
duct
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 - Lifetime
Application number
JP5844685A
Other languages
Japanese (ja)
Other versions
JPS61218333A (en
Inventor
理 名倉
義夫 古川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Electric Power Co Inc
Hitachi Ltd
Original Assignee
Kansai Electric Power Co Inc
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kansai Electric Power Co Inc, Hitachi Ltd filed Critical Kansai Electric Power Co Inc
Priority to JP5844685A priority Critical patent/JPH0652977B2/en
Publication of JPS61218333A publication Critical patent/JPS61218333A/en
Publication of JPH0652977B2 publication Critical patent/JPH0652977B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、回転子外周にスロットを有し、そこに巻線を
挿入して、エアダクトの通風によって巻線および回転子
コアを冷却する回転電機（誘導機、直流機、回転電機子
形交流機）のエアダクトに関する。Description: FIELD OF THE INVENTION The present invention relates to a rotary electric machine that has slots on the outer circumference of a rotor, inserts a winding therein, and cools the winding and the rotor core by ventilation of an air duct. (Induction machine, DC machine, rotating armature type AC machine) Air duct.

〔発明の背景〕[Background of the Invention]

特公昭５２−３０６８２号公報に示すように、従来の回
転子エアダクトは、当板の片面にダクトピースを固定し
ており、この当板の厚さを変えることによって、スロッ
トより内周側のコア部分であるコアバック部分の風速を
変えることは不可能であった。従って、スロットに隣接
する外周側のコア部分であるテイース部分に比較してコ
アバック部分の風速が低下し、コアバック部分での熱伝
達率が低下することがさけられない欠点があり、当板の
厚さを変えることによってコアバック部分の風速を調整
する配慮がなされていなかった。As disclosed in Japanese Examined Patent Publication No. 52-30682, a conventional rotor air duct has a duct piece fixed to one side of a contact plate, and the core on the inner peripheral side of a slot is changed by changing the thickness of the contact plate. It was impossible to change the wind speed of the core back part. Therefore, the wind speed of the core back portion is lower than that of the teeth portion, which is the core portion on the outer peripheral side adjacent to the slot, and there is a drawback that the heat transfer coefficient in the core back portion is unavoidable. No consideration was given to adjusting the wind speed in the core back portion by changing the thickness of the core.

第４図は従来のエアダクトの構造の立体図を示す。そし
て第５図に従来品エアダクト平面図、第６図にその側面
図を示す。これらの図に示されているように、ダクトピ
ース１は当板２に溶接で固定されており、当板２は回転
子コア３にはさまれた形で、キー４によってスパイダー
５に止められており、矢印の如く通風経路を構成してい
る。この冷却風はスロット６より内周側のコアバンク部
分を冷却するとともに、スロット６の両端のテイース８
の部分を冷却し、またスロット内の巻線７を冷却してい
る。しかし、ダクトピース１の配置が第５図の如く放射
状であるため、ダクトピース１の厚さや当板２の厚さに
関係なく、テイース部とコアバック部の通風断面積が決
まることになり、スロット６のあるテイース８の部分に
比較して、スロット６より内周のコアバック部分では通
風断面積が大となる分だけ風速が低下（約４０％）す
る。このため風速の約０．８乗に比例する回転子コア３
の表面の熱伝達率も低く（約４８％）なり、コアバック
においてはテイース８部分と同等の冷却効果を得ること
ができなかった。FIG. 4 shows a three-dimensional view of the structure of a conventional air duct. FIG. 5 shows a plan view of a conventional air duct, and FIG. 6 shows a side view thereof. As shown in these figures, the duct piece 1 is fixed to the contact plate 2 by welding, and the contact plate 2 is sandwiched between the rotor cores 3 and fastened to the spider 5 by the key 4. The ventilation path is constructed as shown by the arrow. The cooling air cools the core bank portion on the inner peripheral side of the slot 6, and the teeth 8 at both ends of the slot 6 are also cooled.
Is cooled, and the winding 7 in the slot is cooled. However, since the arrangement of the duct pieces 1 is radial as shown in FIG. 5, regardless of the thickness of the duct pieces 1 and the thickness of the contact plate 2, the ventilation cross-sectional area of the teeth portion and the core back portion is determined. Compared to the portion of the tooth 8 having the slot 6, the air velocity in the core back portion of the inner periphery of the slot 6 is reduced (about 40%) as much as the cross-sectional area of ventilation becomes large. Therefore, the rotor core 3 proportional to the wind speed to the 0.8th power
The heat transfer coefficient of the surface of (1) was also low (about 48%), and in the core back, the cooling effect equivalent to that of the Taste 8 part could not be obtained.

〔発明の目的〕[Object of the Invention]

本発明は以上の点に鑑みなされたものであり、コアバッ
ク部の熱伝達率を増大してコアおよび巻線の冷却を良く
した回転電機のエアダクトを提供することを目的とする
ものである。The present invention has been made in view of the above points, and an object of the present invention is to provide an air duct for a rotary electric machine in which the heat transfer coefficient of the core back portion is increased to improve cooling of the core and the winding.

〔発明の概要〕[Outline of Invention]

すなわち本発明は、ダクトピースの高さ方向（高さ方向
は第３図の鉄心の積層方向である）中央部に円板状また
はセグメント状の当板を固定し、この円板状またはセグ
メント状の当板の内周側縁を刃形形状とすることを特徴
とするものであり、これによって所期の目的を達成する
ようにしたものである。That is, according to the present invention, a disc-shaped or segment-shaped contact plate is fixed to the central portion of the duct piece in the height direction (the height direction is the stacking direction of the iron cores in FIG. 3), and the disc-shaped or segment-shaped contact plate is fixed. It is characterized in that the inner peripheral side edge of the contact plate is formed into a blade shape, thereby achieving the intended purpose.

すなわち従来のダクトピースは当板の片面に取付けられ
ており、当板自体は通風冷却に何等関係せず、単にダク
トピースを保持する役目しかなかった。一方、ダクトピ
ースはテイース部分とコアバック部分にまたがって放射
状に配置されるので、スロットがなく通風断面積がそれ
だけ大きくなるコアバック部分は風速が低く、冷却効果
が小さかった。本発明は当板をダクトピースの高さ方向
中央部にすることにより、コアバック部分の風速を増大
可能にしたものである。That is, the conventional duct piece is attached to one side of the contact plate, and the contact plate itself has nothing to do with ventilation cooling, and merely serves to hold the duct piece. On the other hand, since the duct pieces are radially arranged over the teeth portion and the core back portion, the core back portion having no slots and having a larger ventilation cross-section has a lower wind speed and a smaller cooling effect. The present invention makes it possible to increase the wind speed of the core back portion by making the contact plate the central portion in the height direction of the duct piece.

〔発明の実施例〕Example of Invention

以下、図示した実施例に基づいて本発明を説明する。第
２図は本発明の一実施例のエアダクトの平面図、第３図
は同じく一実施例のエアダクトの側面図、第１図はその
立体図を示す。本実施例ではダクトピース１の高さ方向
中央部に円板状の当板２を固定し、この当板２の内周側
縁を刃形形状とした。このようにすることにより、当板
２の厚さを適切にすることによりコアバック部分の通風
断面積をテイース８部分とは関係なく加減できるように
なって、コアバック部分の風速をテイース８部分と同等
にできるようになり、コアバック部の熱伝達率を増大し
てコア３および巻線７の冷却を良くした回転電機のエア
ダクトを得ることができる。Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 2 is a plan view of an air duct of one embodiment of the present invention, FIG. 3 is a side view of the air duct of the same embodiment, and FIG. 1 is a three-dimensional view thereof. In this embodiment, a disc-shaped contact plate 2 is fixed to the center of the duct piece 1 in the height direction, and the inner peripheral side edge of the contact plate 2 is formed into a blade shape. By doing so, the ventilation cross-sectional area of the core back portion can be adjusted regardless of the taste 8 portion by adjusting the thickness of the contact plate 2, and the wind speed of the core back portion can be adjusted to 8 portions. It is possible to obtain the air duct of the rotary electric machine in which the heat transfer coefficient of the core back portion is increased and the cooling of the core 3 and the winding 7 is improved.

すなわちダクトピース１は当板２にダクトピース１の高
さ方向中央部で溶接により固定され、当板２はボルト９
によって回転子コア３に固定される。当板２の内径は回
転子コア３の内径より大とし、端面を矢形にとがらせて
風の通風抵抗を小さくしている。本実施例によれば当板
２の厚さを適切にすることによって、コアバック部分の
通風断面積をテイース８部分とは関係なく加減できるの
で、コアバック部分の風速をテイース８部分と同等にす
ることが可能であり、従来品より約２倍高い熱伝達率を
得ることができる。これによって、テイース８部分だけ
でなくコアバック部分でも高い冷却効果が得られること
になり、回転子コア３と巻線７の温度を大幅に下げるこ
とができる。That is, the duct piece 1 is fixed to the contact plate 2 by welding at the center in the height direction of the duct piece 1, and the contact plate 2 is fixed by the bolt 9
It is fixed to the rotor core 3 by. The inner diameter of the contact plate 2 is larger than the inner diameter of the rotor core 3, and the end face is pointed in an arrow shape to reduce the ventilation resistance of wind. According to the present embodiment, by appropriately adjusting the thickness of the contact plate 2, the ventilation cross-sectional area of the core back portion can be adjusted independently of the tees 8 portion, so that the wind speed of the core back portion can be made equal to that of the tees 8 portion. It is possible to obtain a heat transfer coefficient that is about twice as high as that of the conventional product. As a result, a high cooling effect can be obtained not only in the teeth 8 portion but also in the core back portion, and the temperatures of the rotor core 3 and the winding 7 can be significantly reduced.

このように本実施例によれば次に述べるような効果を奏
することができる。As described above, according to this embodiment, the following effects can be obtained.

コアバック部分の熱伝達率は従来の２倍にできる。The heat transfer coefficient of the core back part can be doubled from the conventional one.

これによって回転子コアの温度上昇は、従来の７０％、
回転子巻線の温度上昇は８５％まで低下できる。As a result, the temperature rise of the rotor core is 70% of the conventional one,
The temperature rise of the rotor winding can be reduced by up to 85%.

この効果により、従来と同等の温度上昇を許容する設計
とした場合は回転子コアの電気鋼板の重量を８５％、回
転子巻線の銅重量は約９０％に低減でき、その分だけ経
済的な回転電機が製作可能となる。Due to this effect, the weight of the electrical steel sheet of the rotor core and the weight of copper of the rotor winding can be reduced to 85% and 90%, respectively, when the temperature rise is designed to be equivalent to the conventional one, which is economical. It will be possible to manufacture various rotating electrical machines.

以上、本実施例のエアダクトは回転子に適用した場合で
説明したが、固定子についても全く同じように適用でき
る。Although the air duct of this embodiment has been described as applied to the rotor, it can be applied to the stator in exactly the same manner.

〔発明の効果〕〔The invention's effect〕

上述のように本発明によればダクトピークの高さ方向中
央部に円板状またはセグメント状の当板を固定し、この
円板状またはセグメント状の当板の内周側縁を刃形形状
としたので、当板の厚さを適切にすることによりコアバ
ック部分の通風断面積をテイース部分とは関係なく加減
できるようになって、コアバック部分の風速をテイース
部分と同等にできるようになり、コアバック部の熱伝達
率を増大してコアおよび巻線の冷却を良くした回転電機
のエアダクトを得ることができる。As described above, according to the present invention, a disc-shaped or segment-shaped contact plate is fixed to the central portion in the height direction of the duct peak, and the inner peripheral side edge of this disc-shaped or segment-shaped contact plate is shaped like a blade. Therefore, by adjusting the thickness of this plate, the ventilation cross-sectional area of the core back part can be adjusted independently of the teeth part, and the wind speed of the core back part can be made equal to that of the teeth part. Therefore, it is possible to obtain the air duct of the rotating electric machine in which the heat transfer coefficient of the core back portion is increased and the cooling of the core and the winding is improved.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の回転電機のエアダクトの一実施例の立
体図、第２図は同じく一実施例のエアダクト使用による
回転電機要部の平面図、第３図は第２図の側面図、第４
図は従来の回転電機のエアダクトの立体図、第５図は同
じく従来のエアダクト使用による回転電機要部の平面
図、第６図は第５図の側面図である。 １…ダクトピース、２…当板、３…回転子コア、４…キ
ー、５…スパイダー、６…スロット、７…回転子巻線、
８…テイース、９…ボルト。FIG. 1 is a three-dimensional view of an embodiment of an air duct for a rotating electric machine of the present invention, FIG. 2 is a plan view of a main portion of the rotating electric machine using the air duct of the embodiment, and FIG. 3 is a side view of FIG. Fourth
FIG. 5 is a three-dimensional view of an air duct of a conventional rotary electric machine, FIG. 5 is a plan view of a main portion of a rotary electric machine similarly using the conventional air duct, and FIG. 6 is a side view of FIG. 1 ... Duct piece, 2 ... Contact plate, 3 ... Rotor core, 4 ... Key, 5 ... Spider, 6 ... Slot, 7 ... Rotor winding,
8 ... Taste, 9 ... Bolt.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−66543（ＪＰ，Ａ) 実開 昭50−86206（ＪＰ，Ｕ) 実開 昭59−107553（ＪＰ，Ｕ) 実開 昭59−169555（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-66543 (JP, A) real-open Sho-50-86206 (JP, U) real-open Sho-59-107553 (JP, U) real-open Sho-59- 169555 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】回転子外周にスロットを有し、そこに巻線
を挿入する回転電機の回転子または固定子コアの、通風
経路を形成する当板に固定されたダクトピースよりなる
回転電機のエアダクトにおいて、前記ダクトピースの高
さ方向中央部に円板状またはセグメント状の前記当板を
固定し、この円板状またはセグメント状の当板の内周側
縁を刃形形状としたことを特徴とする回転電機のエアダ
クト。1. A rotary electric machine comprising a rotor or a stator core of a rotary electric machine in which a winding is inserted into the slot, and a duct piece fixed to a contact plate forming a ventilation path of the rotary electric machine. In the air duct, the disc-shaped or segment-shaped contact plate is fixed to the center portion in the height direction of the duct piece, and the inner peripheral side edge of the disc-shaped or segment-shaped contact plate is formed into a blade shape. The air duct of the rotating electric machine that features.
JP5844685A 1985-03-25 1985-03-25 Air duct of rotating electric machine Expired - Lifetime JPH0652977B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5844685A JPH0652977B2 (en) 1985-03-25 1985-03-25 Air duct of rotating electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5844685A JPH0652977B2 (en) 1985-03-25 1985-03-25 Air duct of rotating electric machine

Publications (2)

Publication Number Publication Date
JPS61218333A JPS61218333A (en) 1986-09-27
JPH0652977B2 true JPH0652977B2 (en) 1994-07-06

Family

ID=13084630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5844685A Expired - Lifetime JPH0652977B2 (en) 1985-03-25 1985-03-25 Air duct of rotating electric machine

Country Status (1)

Country Link
JP (1) JPH0652977B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10317593A1 (en) 2003-04-16 2004-11-18 Siemens Ag Electrical machine with cooled stator and rotor laminated core and windings
JP2013066341A (en) * 2011-09-20 2013-04-11 Toshiba Mitsubishi-Electric Industrial System Corp Rotary electric machine
JP6084559B2 (en) * 2013-12-06 2017-02-22 東芝三菱電機産業システム株式会社 Rotating electrical machine rotor

Also Published As

Publication number Publication date
JPS61218333A (en) 1986-09-27

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