JP2000152563A - Totally enclosed cooling type dynamo electric machine - Google Patents

Totally enclosed cooling type dynamo electric machine

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Publication number
JP2000152563A
JP2000152563A JP10316762A JP31676298A JP2000152563A JP 2000152563 A JP2000152563 A JP 2000152563A JP 10316762 A JP10316762 A JP 10316762A JP 31676298 A JP31676298 A JP 31676298A JP 2000152563 A JP2000152563 A JP 2000152563A
Authority
JP
Japan
Prior art keywords
electric machine
cooling
fully
cooling element
closed
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.)
Granted
Application number
JP10316762A
Other languages
Japanese (ja)
Other versions
JP3535025B2 (en
Inventor
Koichi Matsuoka
孝一 松岡
Minoru Hosoda
稔 細田
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.)
Railway Technical Research Institute
Original Assignee
Railway Technical Research Institute
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Priority to JP31676298A priority Critical patent/JP3535025B2/en
Publication of JP2000152563A publication Critical patent/JP2000152563A/en
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Publication of JP3535025B2 publication Critical patent/JP3535025B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Motor Or Generator Cooling System (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a totally enclosed cooling type dynamo electric machine which can reduce thermal resistance of a path from a heat generating member to outside air, improve cooling performance, and reduce temperature rise of a dynamo electric machine. SOLUTION: This totally enclosed cooling type dynamo electric machine is equipped with a thin plate type cooling element 14 which is sandwiched between laminated cores 12 and includes a loop type thin heat pipe forming fins 14A coming into contact with outside air 17, and a thin plate type cooling element 15 which is sandwiched between coil ends 13A and includes a loop type thin heat pipe forming fins 15A coming into contact with outside air 17.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、全閉冷却型回転電
機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully-closed cooling rotary electric machine.

【０００２】[0002]

【従来の技術】従来提案されている全閉型回転電機で
は、単に回転電機の外部に冷却風を流すか、機内を循環
する空気を媒体として発熱部から冷却部まで熱を運び、
冷却部でフィン等を通して外部に熱を放出する構成にな
っている。2. Description of the Related Art In a conventionally proposed fully-closed rotary electric machine, cooling air is simply flown to the outside of the rotary electric machine, or heat is carried from a heat-generating section to a cooling section using air circulating in the apparatus as a medium.
In the cooling unit, heat is released to the outside through fins and the like.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、上記し
た従来の回転電機の冷却方法では、発熱体から放熱部ま
での熱抵抗が大きく、温度上昇を防ぎながら大量の熱を
放出することは難しい。つまり、従来の全閉冷却型回転
電機は、温度上昇が大きくなりがちであるといった問題
があった。However, in the above-described conventional cooling method for a rotating electric machine, the thermal resistance from the heating element to the heat radiating portion is large, and it is difficult to release a large amount of heat while preventing a temperature rise. That is, the conventional fully-closed cooling type rotary electric machine has a problem that the temperature rise tends to be large.

【０００４】回転電機を全閉型にすると、冷却風を機内
に導入する必要が無くなり、塵埃の侵入を防ぐことがで
き、メンテンスフリーで低騒音の回転電機が実現できる
が、一方で、回転電機内への冷却風に代わる新たな冷却
手段を考える必要がある。ところで、先行技術例とし
て、ループ型細管ヒートパイプを用いた全閉冷却型電動
機〔登録２５７２４４４号公報（実願平４−５２８３９
号）〕がある。[0004] When the rotating electric machine is fully closed, there is no need to introduce cooling air into the machine, it is possible to prevent dust from entering, and a maintenance-free and low-noise rotating electric machine can be realized. It is necessary to consider a new cooling method that replaces the cooling wind into the inside. By the way, as a prior art example, a fully-closed cooling type electric motor using a loop type thin tube heat pipe [Registration No. 2572444 (Jpn.
No.)].

【０００５】図８は従来の全閉冷却型電動機の断面図、
図９はその全閉冷却型電動機のループパイプの斜視図で
ある。主電動機の回転子１０２、固定子１０３に発生し
た熱は軸１０１に装着された内蔵ファン１０５により、
枠内ファン側より内気通風路１０６の風道入口１０７
ａ、通気管１０８、風道出口１０７ｂを経て主電動機枠
内反ファン側に循環し、冷却された内気は矢印で示した
経路を経て、回転子１０２，固定子１０３を冷却し、内
蔵ファン１０５側へと還流する。ループパイプ１０９の
受熱部１０９ａは内気通風路１０６の風道入口１０７ａ
内に配設され、放熱部１０９ｃは、主電動機枠１０４の
外部に内気通風路１０６ともに車両走行時の走行風に露
出されており、走行風は紙面に直角に流れるように配置
される。FIG. 8 is a sectional view of a conventional fully-closed cooling motor.
FIG. 9 is a perspective view of a loop pipe of the fully closed cooling electric motor. Heat generated in the rotor 102 and the stator 103 of the main motor is generated by a built-in fan 105 mounted on the shaft 101.
The airway entrance 107 of the inside air passage 106 from the fan side in the frame
a, through the ventilation pipe 108 and the wind path outlet 107b, circulates toward the fan inside the main motor frame, and the cooled inside air cools the rotor 102 and the stator 103 through the path indicated by the arrow, and the built-in fan 105 Reflux to the side. The heat receiving portion 109a of the loop pipe 109 is connected to the air passage inlet 107a of the inside air passage 106.
The heat radiating portion 109c is exposed outside the main motor frame 104 to the traveling wind when the vehicle is traveling together with the inside air ventilation passage 106, and the traveling wind is arranged to flow at a right angle to the paper surface.

【０００６】図９に示すように、受熱部１０９ａ（１０
９ａ１，１０９ａ２，１０９ａ３）と、他端の受熱部
（図示なし）と、放熱部１０９ｃ（１０９ｃ１，１０９
ｃ２，１０９ｃ３）とからなるループパイプを構成して
いる。ループパイプはアダプタ１１０により風道入口１
０７ａ、風道出口１０７ｂに取付けられる。しかしなが
ら、上記した従来の方法では、機内空気を中間媒体とし
た間接冷却であって全体での熱抵抗が大きい。As shown in FIG. 9, the heat receiving portion 109a (10
9a1, 109a2, 109a3), a heat receiving section (not shown) at the other end, and a heat radiating section 109c (109c1, 109c).
c2, 109c3). The loop pipe is connected to the airway entrance 1 by the adapter 110.
07a, attached to the airway exit 107b. However, in the above-described conventional method, indirect cooling using the air inside the apparatus as an intermediate medium has a large thermal resistance as a whole.

【０００７】本発明は、この種の電動機に改良を加え
て、発熱体から外気までの経路の熱抵抗を小さくするこ
とができ、冷却性能が向上し、回転電機の温度上昇を低
減することができる全閉冷却型回転電機を提供すること
を目的とする。The present invention improves this type of electric motor to reduce the thermal resistance of the path from the heating element to the outside air, thereby improving the cooling performance and reducing the temperature rise of the rotating electric machine. An object of the present invention is to provide a fully-closed cooling type rotating electric machine that can be used.

【０００８】[0008]

【課題を解決するための手段】本発明は、上記目的を達
成するために、 〔１〕全閉冷却型回転電機において、固定子に配置さ
れ、外気に触れるフィンが形成される板状冷却エレメン
トを具備するようにしたものである。 〔２〕上記〔１〕記載の全閉冷却型回転電機において、
前記板状冷却エレメントを積層鉄心に挟むように配置す
るようにしたものである。According to the present invention, in order to achieve the above object, [1] In a fully-closed cooling type rotary electric machine, a plate-like cooling element arranged on a stator and having fins that come into contact with outside air is formed. Is provided. [2] In the fully-closed cooling rotary electric machine according to [1],
The plate-like cooling element is arranged so as to be sandwiched between laminated iron cores.

【０００９】〔３〕上記〔２〕記載の全閉冷却型回転電
機において、前記板状冷却エレメントを積層鉄心及びコ
イルエンドに挟むように配置するようにしたものであ
る。 〔４〕上記〔１〕、〔２〕又は〔３〕記載の全閉冷却型
回転電機において、前記板状冷却エレメントはループ式
細管ヒートパイプ内蔵の冷却エレメントであるようにし
たものである。[3] In the fully-closed cooling rotary electric machine according to the above [2], the plate-shaped cooling element is arranged so as to be sandwiched between a laminated core and a coil end. [4] In the fully-cooled rotary electric machine according to [1], [2] or [3], the plate-shaped cooling element is a cooling element with a built-in loop-type thin tube heat pipe.

【００１０】[0010]

【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら詳細に説明する。図１は本発明の
第１実施例を示す全閉冷却型回転電機の要部断面図、図
２はその全閉冷却型回転電機の固定子の冷却装置を示す
断面図、図３はその固定子の部分斜視図、図４はその固
定子のコイルエンド部分の斜視図、図５はその薄板状冷
却エレメントを示す図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of a fully-closed cooling type rotating electric machine showing a first embodiment of the present invention, FIG. FIG. 4 is a perspective view of a coil end portion of the stator, and FIG. 5 is a view showing the thin plate cooling element.

【００１１】これらの図において、１は全閉冷却型回転
電機の回転軸、２はその回転軸に固定される回転子、３
はベアリング、１０は外部ケーシング、１１は固定子、
１２は固定子積層鉄心、１３は固定子コイル、１３Ａは
コイルエンド、１４は固定子積層鉄心に挟まれるループ
式細管ヒートパイプ内蔵の薄板状冷却エレメント、１５
はコイルエンド部分に挟まれるループ式細管ヒートパイ
プ内蔵の薄板状冷却エレメント、１６は内気、１７は外
気である。In these figures, reference numeral 1 denotes a rotating shaft of a fully-closed cooling type rotary electric machine, 2 denotes a rotor fixed to the rotating shaft, 3
Is a bearing, 10 is an outer casing, 11 is a stator,
12 is a stator laminated core, 13 is a stator coil, 13A is a coil end, 14 is a thin plate cooling element with a built-in loop-type thin tube heat pipe sandwiched between the stator laminated cores, 15
Is a thin plate cooling element with a built-in loop-type thin tube heat pipe sandwiched between coil end portions, 16 is inside air, and 17 is outside air.

【００１２】この全閉冷却型回転電機の断面を見ると、
図２に示すように、ある固定子積層鉄心１２の円周には
凹部を形成しておき、その凹部に薄板状冷却エレメント
１４の基部１４Ｂを装着して、放射状に複数枚を前後の
固定子積層鉄心（図示なし）で挟み込んで配置するよう
にしている。また、図３に示すように、薄板状冷却エレ
メント１４は前後の配置をずらすように配置することも
できる。Looking at the cross section of this fully-closed cooling type rotary electric machine,
As shown in FIG. 2, a recess is formed in the circumference of a certain stator laminated core 12, and the base 14 B of the thin plate cooling element 14 is mounted in the recess, and a plurality of stators are radially inserted into the front and rear stators. It is arranged so as to be sandwiched between laminated iron cores (not shown). In addition, as shown in FIG. 3, the thin plate cooling elements 14 can be arranged so that the front and rear arrangements are shifted.

【００１３】また、図４に示すように、コイルエンド１
３Ａ間には薄板状冷却エレメント１５の基部を挟み込む
ようにし、そのコイルエンド１３Ａは突出したフィン１
５Ａを除いて樹脂で固めるようにしてもよい。 そこで、 固定子コイル１３の発熱（鉄心内）、固定
子積層鉄心１２の発熱は固定子コイル１３→固定子積層
鉄心１２→薄板状冷却エレメント１４→外気１７で放熱
される。Further, as shown in FIG.
The base of the thin plate cooling element 15 is sandwiched between 3A, and its coil end 13A is
You may make it solidify with resin except 5A. Therefore, heat generated by the stator coil 13 (within the iron core) and heat generated by the stator laminated core 12 are radiated by the stator coil 13 → the laminated stator core 12 → the thin plate cooling element 14 → the outside air 17.

【００１４】また、 固定子コイルエンド１３Ａの発
熱→固定子コイルエンド１３Ａ→薄板状冷却エレメント
１５→外気１７で放熱される。ここで、薄板状冷却エレ
メント１４，１５について説明すると、図５に示すよう
に、例えば、ループ式細管ヒートパイプ１４−１，１５
−１が薄板状の熱伝導性材料（例えば、アルミニウム）
１４−２，１５−２に内蔵されるように構成されてい
る。そのループ式細管ヒートパイプ１４−１，１５−１
内には、作動流体として、フロンＨＣＦＣ１４２ｂを内
容積７０％封入したものを用いることができる（例え
ば、米国特許４９２１０４１号、特開昭６３−３１８４
９３号公報、特公平６−９７１４７号公報参照）。Heat is radiated by the stator coil end 13A → stator coil end 13A → thin plate cooling element 15 → outside air 17. Here, the plate-shaped cooling elements 14 and 15 will be described. For example, as shown in FIG.
-1 is a thin plate-shaped heat conductive material (for example, aluminum)
14-2 and 15-2. The loop type thin tube heat pipes 14-1 and 15-1
As the working fluid, a fluid in which 70% of the volume of Freon HCFC142b is sealed can be used (for example, US Pat. No. 4,921,041, JP-A-63-3184).
No. 93, JP-B-6-97147).

【００１５】このように、発熱体である固定子コイル，
固定子積層鉄心１２から薄板状冷却エレメント１４，１
５までは熱伝導により熱が伝えられるが、接触面積が大
きいため、熱抵抗は小さい。よって、薄板状冷却エレメ
ント１４，１５自身の熱抵抗は非常に小さい。そして、
それがそのまま冷却フィン１４Ａ，１５Ａとなり、ここ
でも空気との接触面積を大きくとることができるので、
熱抵抗を小さくすることができる。As described above, the stator coil as the heating element,
From the stator laminated iron core 12 to the thin plate cooling element 14,1
Up to 5, heat is transmitted by heat conduction, but the thermal resistance is small due to the large contact area. Therefore, the thermal resistance of the sheet-like cooling elements 14 and 15 themselves is very small. And
It becomes the cooling fins 14A and 15A as it is, and the contact area with the air can be increased here, so that
Thermal resistance can be reduced.

【００１６】よって、全体での熱抵抗は空気等を中間媒
体にする場合に比べて非常に小さくすることができる。
次に、本発明の第２実施例について説明する。図６は本
発明の第２実施例を示す全閉冷却型回転電機の内部模式
図、図７はその図６のＡ−Ａ′線断面図である。Therefore, the total thermal resistance can be made very small as compared with the case where air or the like is used as the intermediate medium.
Next, a second embodiment of the present invention will be described. FIG. 6 is a schematic diagram showing the internal configuration of a fully-closed-cooling type rotating electric machine according to a second embodiment of the present invention, and FIG.

【００１７】これらの図において、２１は回転子、２２
は固定子積層鉄心、２３はドーナッ状薄円板からなる冷
却エレメントであり、図示しないが、図５に示すような
ループ式細管ヒートパイプがドーナッ状薄円板を形成す
る熱伝導性材料に内蔵されるように構成されている。ま
た、回転子の冷却は、図示しないが、通常用いられるよ
うに、回転子自らの回転により、ファンが作動して、回
転電機内の空気の循環により、回転子コイル→機内空気
→冷却フィンの経路で放熱するように構成することがで
きる。In these figures, 21 is a rotor, 22
Is a stator laminated iron core, and 23 is a cooling element made of a donut-shaped thin disk. Although not shown, a loop-type thin tube heat pipe as shown in FIG. 5 is built in the heat conductive material forming the donut-shaped thin disk. It is configured to be. The cooling of the rotor is not shown, but as normally used, the fan operates by the rotation of the rotor itself, and the circulation of air in the rotating electric machine causes the rotor coil → in-machine air → cooling fins to cool. It can be configured to dissipate heat in the path.

【００１８】なお、上記実施例では、薄板状冷却エレメ
ントとしたが、大型の回転電機においては、適宜厚みを
持たせることは可能であり、その意味で板状冷却エレメ
ントであってもよい。また、本発明は上記実施例に限定
されるものではなく、本発明の趣旨に基づいて種々の変
形が可能であり、これらを本発明の範囲から排除するも
のではない。In the above embodiment, a thin plate cooling element is used. However, a large rotating electric machine can have an appropriate thickness, and in that sense, a plate cooling element may be used. Further, the present invention is not limited to the above-described embodiments, and various modifications are possible based on the gist of the present invention, and these are not excluded from the scope of the present invention.

【００１９】[0019]

【発明の効果】以上、詳細に説明したように、本発明に
よれば、以下のような効果を奏することができる。 （Ａ）発熱体から外気に至るまでの経路の熱抵抗を小さ
くすることができ、冷却性能が向上し、回転電機の温度
上昇を低減することができる。As described above, according to the present invention, the following effects can be obtained. (A) The thermal resistance of the path from the heating element to the outside air can be reduced, the cooling performance can be improved, and the temperature rise of the rotating electric machine can be reduced.

【００２０】（Ｂ）塵埃の侵入を防ぐことができ、メン
テナンスフリーの全閉冷却型回転電機を実現することが
できる。 （Ｃ）従来のファンを備えた全閉型回転電機は、騒音を
発生することになるが、本発明の全閉冷却型回転電機
は、ファンを要しないので、騒音を防止することができ
る。(B) It is possible to prevent intrusion of dust and to realize a maintenance-free fully-closed cooling type rotating electric machine. (C) A fully-closed rotary electric machine equipped with a conventional fan generates noise, but the fully-closed cooled rotary electric machine of the present invention does not require a fan, so that noise can be prevented.

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

【図１】本発明の第１実施例を示す全閉冷却型回転電機
の要部断面図である。FIG. 1 is a sectional view of a main part of a fully-closed-cooling type rotating electric machine showing a first embodiment of the present invention.

【図２】本発明の第１実施例を示す全閉冷却型回転電機
の固定子の冷却装置を示す断面図である。FIG. 2 is a cross-sectional view showing a cooling device for the stator of the fully-closed cooling type rotating electric machine according to the first embodiment of the present invention.

【図３】本発明の第１実施例を示す全閉冷却型回転電機
の固定子の部分斜視図である。FIG. 3 is a partial perspective view of a stator of the fully-closed cooling type rotating electric machine according to the first embodiment of the present invention.

【図４】本発明の第１実施例を示す全閉冷却型回転電機
の固定子のコイルエンド部分の斜視図である。FIG. 4 is a perspective view of a coil end portion of a stator of the fully-closed cooling type rotating electric machine according to the first embodiment of the present invention.

【図５】本発明の第１実施例を示す全閉冷却型回転電機
の固定子の薄板状冷却エレメントを示す図である。FIG. 5 is a view showing a thin cooling element of a stator of the fully-closed cooling type rotating electric machine according to the first embodiment of the present invention.

【図６】本発明の第２実施例を示す全閉冷却型回転電機
の内部模式図である。FIG. 6 is an internal schematic view of a fully-closed-cooling type rotating electric machine showing a second embodiment of the present invention.

【図７】図６のＡ−Ａ′線断面図である。FIG. 7 is a sectional view taken along line AA ′ of FIG. 6;

【図８】従来の全閉冷却型電動機の断面図である。FIG. 8 is a cross-sectional view of a conventional fully closed cooling electric motor.

【図９】従来の全閉冷却型電動機のループパイプの斜視
図である。FIG. 9 is a perspective view of a loop pipe of a conventional fully closed cooling electric motor.

【符号の説明】[Explanation of symbols]

１ 回転軸 ２ 回転子 ３ ベアリング １０ 外部ケーシング １１ 固定子 １２，２２ 固定子積層鉄心 １３ 固定子コイル １３Ａ コイルエンド １４，１５ ループ式細管ヒートパイプ内蔵の薄板状
冷却エレメント １４Ａ，１５Ａ 冷却フィン １６ 内気 １７ 外気 ２１ 回転子 ２３ ドーナッ状薄円板からなる冷却エレメントDESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Rotor 3 Bearing 10 Outer casing 11 Stator 12, 22 Stator laminated iron core 13 Stator coil 13A Coil end 14, 15 Thin plate-shaped cooling element with a built-in loop-type thin tube heat pipe 14A, 15A Cooling fin 16 Inside air 17 Outside air 21 Rotor 23 Cooling element made of thin donut disk

フロントページの続き Ｆターム(参考） 5H609 BB19 BB24 PP01 PP05 PP06 PP09 QQ02 QQ05 QQ14 QQ18 QQ23 RR10 RR38 RR43 RR50 RR58 RR62 RR70 RR71 RR73Continued on the front page F-term (reference) 5H609 BB19 BB24 PP01 PP05 PP06 PP09 QQ02 QQ05 QQ14 QQ18 QQ23 RR10 RR38 RR43 RR50 RR58 RR62 RR70 RR71 RR73

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 固定子に配置され、外気に触れるフィン
が形成される板状冷却エレメントを具備することを特徴
とする全閉冷却型回転電機。1. A fully-closed cooling rotary electric machine, comprising: a plate-shaped cooling element disposed on a stator and having fins that contact the outside air. 【請求項２】 請求項１記載の全閉冷却型回転電機にお
いて、前記板状冷却エレメントを積層鉄心に挟むように
配置することを特徴とする全閉冷却型回転電機。2. The fully-closed cooling type rotating electric machine according to claim 1, wherein the plate-shaped cooling element is arranged so as to be sandwiched between laminated iron cores. 【請求項３】 請求項２記載の全閉冷却型回転電機にお
いて、前記板状冷却エレメントを積層鉄心及びコイルエ
ンドに挟むように配置することを特徴とする全閉冷却型
回転電機。3. The fully-closed cooling type rotating electric machine according to claim 2, wherein the plate-shaped cooling element is disposed so as to be sandwiched between a laminated iron core and a coil end. 【請求項４】 請求項１、２又は３記載の全閉冷却型回
転電機において、前記板状冷却エレメントはループ式細
管ヒートパイプ内蔵の冷却エレメントであることを特徴
とする全閉冷却型回転電機。4. The fully-closed cooling type rotating electric machine according to claim 1, wherein the plate-shaped cooling element is a cooling element with a built-in loop-type thin-tube heat pipe. .
JP31676298A 1998-11-09 1998-11-09 Fully enclosed cooling rotary electric machine Expired - Fee Related JP3535025B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31676298A JP3535025B2 (en) 1998-11-09 1998-11-09 Fully enclosed cooling rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31676298A JP3535025B2 (en) 1998-11-09 1998-11-09 Fully enclosed cooling rotary electric machine

Publications (2)

Publication Number Publication Date
JP2000152563A true JP2000152563A (en) 2000-05-30
JP3535025B2 JP3535025B2 (en) 2004-06-07

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Family Applications (1)

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Country Status (1)

Country Link
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