JPH0126267B2 - - Google Patents
Info
- Publication number
- JPH0126267B2 JPH0126267B2 JP1867283A JP1867283A JPH0126267B2 JP H0126267 B2 JPH0126267 B2 JP H0126267B2 JP 1867283 A JP1867283 A JP 1867283A JP 1867283 A JP1867283 A JP 1867283A JP H0126267 B2 JPH0126267 B2 JP H0126267B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- air
- air cooler
- outer fan
- electric machine
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、外扇のフアン効率を向上させた空気
冷却器付外扇形回転電機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an external fan-shaped rotating electrical machine with an air cooler that improves the fan efficiency of the external fan.
空気冷却器付外扇形回転電機の従来例を第１図
および第２図にもとずいて説明する。これらの図
において、電機本体１の端面から突出する回転軸
２の端部に遠心形の外扇３が取付けられ、この外
扇３による冷却用空気を貫流させて電機本体１の
内部空気を冷却する箱形の空気冷却器４が電機本
体１の外周に取付けられている。前記外扇３を包
囲する外扇カバー５は側面に吸気口５ａが設けら
れ、外周の一部に前記空気冷却器４に向けて冷却
用空気を送り込む吐出口５ｂが設けられている。
A conventional example of an external fan-shaped rotating electrical machine with an air cooler will be explained based on FIGS. 1 and 2. In these figures, a centrifugal external fan 3 is attached to the end of a rotating shaft 2 that protrudes from the end face of the electric machine body 1, and cooling air from this external fan 3 flows through to cool the air inside the electric machine body 1. A box-shaped air cooler 4 is attached to the outer periphery of the electric machine body 1. The outer fan cover 5 that surrounds the outer fan 3 is provided with an intake port 5a on the side surface, and a discharge port 5b for feeding cooling air toward the air cooler 4 in a part of the outer periphery.
このような構造では外扇３の外周と外扇カバー
５との間に形成されている通風路６の断面積が外
扇カバー５のほぼ半周にわたつて一様であるため
空気抵抗が大きく、これによりフアン効率が低下
するという欠点があつた。遠心形フアンにおいて
かゝる空気抵抗を減らすには、よく知られている
ように、上記通風路の断面積が未広がりになるよ
うな第３図に示す如き渦巻き形エアガイド３５を
採用することが考えられる。しかし、この場合に
はフアン効果を減らさないために外扇３の寸法を
維持しようとすると、外扇カバー５の外径が大き
くなつて電機が大形化するという欠点がある。 In such a structure, the cross-sectional area of the ventilation passage 6 formed between the outer circumference of the outer fan 3 and the outer fan cover 5 is uniform over approximately half the circumference of the outer fan cover 5, so air resistance is large. This had the disadvantage of reducing fan efficiency. In order to reduce such air resistance in a centrifugal fan, it is well known that a spiral air guide 35 as shown in FIG. 3 is used so that the cross-sectional area of the ventilation passage is not widened. is possible. However, in this case, if an attempt is made to maintain the dimensions of the outer fan 3 so as not to reduce the fan effect, the outer diameter of the outer fan cover 5 increases, resulting in an increase in the size of the electric machine.
この発明は、前記の欠点を除去するために、外
扇カバーの外形を大きくすることなく外扇フアン
効率を向上させることのできる空気冷却器付外扇
形回転電機を提供することを目的とする。
SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide an external fan-shaped rotating electrical machine with an air cooler that can improve the efficiency of the external fan fan without increasing the external size of the external fan cover.
上記目的は、本発明によれば、回転電機本体
と、該電機本体の端面から突出する回転軸の端部
に取付られた遠心形の外扇と、電機本体の内部空
気を冷却するために電機本体上部外周に設けられ
た空気冷却器と、前記外扇の軸端に対面する部分
に吸気口を有し且つ該吸気口を除いて前記外扇お
よび空気冷却器の冷却用空気入口の周囲を封鎖す
る外扇カバーとを備え、前記吸気口から吸い込ま
れた冷却用空気が前記空気冷却器を貫流するよう
にした空気冷却器付外扇形回転電機において、外
扇周囲を包囲する外扇カバー下部の半円筒状の包
囲壁面部分に続けてその円筒状壁面部分を外扇回
転方向と逆の方向に延長するように外扇カバー内
壁に舌状片を取付け、外扇周囲のうち円筒状包囲
壁面部分でない残りの部分を空気冷却器へ向けて
の冷却用空気の吐出口となし、前記円筒状包囲壁
面部分の個所には外扇周囲空間の軸方向寸法を回
転方向に関して手前側ほど狭めるような隔壁板を
設けることにより、外扇周囲に形成される通風路
の断面積を回転方向に漸増させることによつて達
成される。
The above object, according to the present invention, includes a rotating electric machine body, a centrifugal external fan attached to an end of a rotating shaft protruding from an end face of the electric machine body, and an electric machine for cooling the internal air of the electric machine body. An air cooler provided on the outer periphery of the upper part of the main body, and an intake port in a portion facing the shaft end of the outer fan, and excluding the intake port, the area around the cooling air inlet of the outer fan and the air cooler. In an external fan-shaped rotating electric machine with an air cooler, the electric fan is equipped with an external fan cover that seals off the air cooler, and the cooling air sucked from the air intake port flows through the air cooler. A tongue piece is attached to the inner wall of the outer fan cover so that the cylindrical wall part continues to the semi-cylindrical surrounding wall part and extends in the direction opposite to the rotating direction of the outer fan, and the cylindrical surrounding wall part around the outer fan is attached. The remaining part is used as a discharge port for cooling air toward the air cooler, and the cylindrical surrounding wall part is provided with a structure that narrows the axial dimension of the space around the outer fan toward the front in the rotation direction. By providing the partition plate, this is achieved by gradually increasing the cross-sectional area of the ventilation passage formed around the outer fan in the direction of rotation.
以下、この発明の実施例を図面にもとづいて説
明する。
Embodiments of the present invention will be described below based on the drawings.
第４図はこの発明による空気冷却器付外扇形回
転電機の要部を示すもので、第１図ないし第３図
と同一符号で示すものは同一部品である。 FIG. 4 shows the main parts of an external fan-shaped rotating electric machine with an air cooler according to the present invention, and the same parts as in FIGS. 1 to 3 are denoted by the same reference numerals.
第４図における回転電機においては、外扇３の
周囲を包囲する外扇カバー４５の下部が電機本体
１の外径とほぼ同一寸法の半円筒状に形成されて
いて、この外扇カバーの内壁には、半円筒状壁面
部分に続けてさらに円筒状壁面部分が延長される
ように舌状片４５ｅが取付けられいる。この延長
方向は矢印で図示された回転方向とは逆であり、
したがつて舌状片４５ｅの取付位置は図では外扇
３の左上の部分にあたる。これによつて、外扇３
は全周の3/4程度を円筒状壁面で包囲され、残余
の外周が吐出口４５ｂとなつている。 In the rotating electric machine shown in FIG. 4, the lower part of the outer fan cover 45 surrounding the outer fan 3 is formed into a semi-cylindrical shape with approximately the same size as the outer diameter of the electric machine main body 1, and the inner wall of this outer fan cover A tongue-like piece 45e is attached to the semi-cylindrical wall portion so that the cylindrical wall portion further extends. This direction of extension is opposite to the direction of rotation illustrated by the arrow;
Therefore, the attachment position of the tongue-like piece 45e corresponds to the upper left part of the outer fan 3 in the figure. With this, the outer fan 3
is surrounded by a cylindrical wall surface about 3/4 of its entire circumference, and the remaining outer circumference serves as a discharge port 45b.
外扇カバーの側面部分４５ｃは外扇３の軸端に
対面する部分に吸気口４５ａを有し、この吸気口
には吸込管４５ｄが取付けられいて、この吸込管
の先端は外扇ボス部のすぐ近くまで伸びている。
外扇カバー４５の側板部分４５ｃの内側には付加
的な隔壁的な隔壁板４７が取付けられている。こ
の隔壁板４７は、ほぼ部分リングの形をしてお
り、第５図ないし第７図に示すように、その部分
リング外周縁が上記円筒状壁面に沿い、その部分
リング内周縁が吸込管４５ｄの外周面に沿つてお
り、外扇周囲空間４６の軸方向の寸法Ｗが上記円
筒状壁面部分において回転方向に漸増するように
取付けられている。第５図、第６図および第７図
は、それぞれ第４図における切断線Ａ−Ｏ，Ｂ−
ＯおよびＣ−Ｏによる断面を外扇回転方向に見た
図であり、それぞれにおける外扇周囲空間６の軸
方向寸法ＷがW1ないしW3にて示されている。 The side surface portion 45c of the outer fan cover has an air intake port 45a in a portion facing the shaft end of the outer fan 3, and a suction pipe 45d is attached to this air intake port, and the tip of this suction pipe is connected to the outer fan boss portion. It extends very close.
An additional partition wall plate 47 is attached to the inside of the side plate portion 45c of the outer fan cover 45. This partition plate 47 is approximately in the shape of a partial ring, and as shown in FIGS. 5 to 7, the outer peripheral edge of the partial ring follows the cylindrical wall surface, and the inner peripheral edge of the partial ring runs along the suction pipe 45d. It is attached so that the axial dimension W of the outer fan surrounding space 46 gradually increases in the rotational direction in the cylindrical wall surface portion. 5, 6 and 7 are the cutting lines A-O and B- in FIG. 4, respectively.
It is a diagram showing cross sections taken along lines O and C-O as viewed in the direction of rotation of the outer fan, and the axial dimensions W of the outer fan surrounding space 6 in each are indicated by W 1 to W 3 .
このように舌状片４５ｅおよび隔壁板４７によ
り外扇周囲空間４６を仕切ることによつて、その
空間４６の半径方向の寸法は第１図および第２図
で示された従来装置と同じであつても、その空間
４６の軸方向の寸法は回転方向に関して手前ほど
狭められているので、該空間４６の断面積が回転
方向に漸増する形となり、これにより第３図に示
した渦巻き形エアガイドを設けた場合と同様に末
広がりの通風路が形成されるので、外扇から遠心
力でこの通風路へ送り込まれた空気を吐出口４５
ｂに向けて逃がしやすくなる。すなわち、外扇の
外径を従来と同じに維持しながら且つ外扇カバー
の外径を大きくすることなく、通風路における空
気抵抗を減らしてフアン効率を高めることができ
る。
By partitioning the outer fan surrounding space 46 with the tongue-shaped piece 45e and the partition plate 47 in this way, the radial dimension of the space 46 is the same as that of the conventional device shown in FIGS. 1 and 2. However, since the axial dimension of the space 46 is narrower toward the front in the rotational direction, the cross-sectional area of the space 46 gradually increases in the rotational direction, thereby creating the spiral air guide shown in FIG. Since a ventilation path that widens toward the end is formed in the same way as in the case where a
It becomes easier to escape towards b. That is, while maintaining the outer diameter of the outer fan the same as before and without increasing the outer diameter of the outer fan cover, air resistance in the ventilation path can be reduced and fan efficiency can be increased.
第１図は従来の空気冷却器付外扇形回転電機を
示す一部縦断面図、第２図は第１図の−線に
沿う縦断面図、第３図は他の従来例を示す要部の
縦断面図、第４図はこの発明による空気冷却器付
外扇形回転電機の要部を示す縦断面図、第５図な
いし第７図はそれぞれ第４図のＡ−Ｏ線、Ｂ−Ｏ
線、Ｃ−Ｏ線に沿う断面図である。
１……電機本体、２……外扇、３……空気冷却
器、４５……外扇カバー、４５ａ……吸気口、４
５ｂ……吐出口、４５ｄ……吸気管、４５ｅ……
舌状片、４６……外扇周囲空間（通風路）、４７
点……隔壁部材。
Fig. 1 is a partial vertical sectional view showing a conventional external fan-shaped rotating electric machine with an air cooler, Fig. 2 is a longitudinal sectional view taken along the - line in Fig. 1, and Fig. 3 is a main part showing another conventional example. FIG. 4 is a vertical cross-sectional view showing the main parts of the external fan-shaped rotating electric machine with an air cooler according to the present invention, and FIGS. 5 to 7 are taken along lines A-O and B-O in FIG. 4, respectively.
FIG. 2 is a cross-sectional view taken along line C--O. 1...Electric machine body, 2...Outside fan, 3...Air cooler, 45...Outside fan cover, 45a...Intake port, 4
5b...Discharge port, 45d...Intake pipe, 45e...
Tongue-shaped piece, 46... Space around outer fan (ventilation passage), 47
Point: Partition wall member.
Claims (1)
する回転軸の端部に取付られた遠心形の外扇と、
電機本体の内部空気を冷却するために電機本体上
部外周に設けられた空気冷却器と、前記外扇の軸
端に対面する部分に吸気口を有し且つ該吸気口を
除いて前記外扇および空気冷却器の通風入口の周
囲を封鎖する外扇カバーとを備え、前記吸気口か
ら吸い込まれた冷却用空気が前記空気冷却器を貫
流するようにした空気冷却器付外扇形回転電機に
おいて、外扇周囲を包囲する外扇カバー下部の半
円筒状の包囲壁面部分に続けてその円筒状壁面部
分を外扇回転方向と逆の方向に延長するように外
扇カバー内壁に舌状片を取付け、外扇周囲のうち
円筒状包囲壁面部分でない残りの部分を空気冷却
器へ向けての冷却用空気の吐出口となし、前記円
筒状包囲壁面部分の個所には外扇周囲空間の軸方
向寸法を回転方向に関して手前側ほど狭めるよう
な隔壁板を設けることにより、外扇周囲に形成さ
れる通風路の断面積を回転方向に漸増するように
したことを特徴とする空気冷却器付外扇形回転電
機。1. A rotating electrical machine main body, a centrifugal external fan attached to the end of a rotating shaft protruding from the end face of the electrical machine main body,
an air cooler provided on the outer periphery of the upper part of the electric machine body to cool the internal air of the electric machine body; and an air inlet in a portion facing the shaft end of the outer fan; In an external fan-shaped rotating electrical machine with an air cooler, the electric machine is equipped with an external fan cover that seals around a ventilation inlet of the air cooler, and the cooling air sucked from the air intake port flows through the air cooler. A tongue-shaped piece is attached to the inner wall of the outer fan cover so as to continue with the semi-cylindrical surrounding wall portion of the lower part of the outer fan cover that surrounds the periphery of the fan, and to extend the cylindrical wall portion in a direction opposite to the rotating direction of the outer fan cover. The remaining portion around the outer fan that is not the cylindrical surrounding wall portion is used as a discharge port for cooling air toward the air cooler, and the axial dimension of the space around the outer fan is set at the location of the cylindrical surrounding wall portion. An external fan-shaped rotating electrical machine with an air cooler, characterized in that the cross-sectional area of the ventilation passage formed around the external fan gradually increases in the rotational direction by providing a partition plate that becomes narrower toward the front in the rotational direction. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1867283A JPS59144336A (en) | 1983-02-07 | 1983-02-07 | Outer fan type rotary electric machine with air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1867283A JPS59144336A (en) | 1983-02-07 | 1983-02-07 | Outer fan type rotary electric machine with air cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144336A JPS59144336A (en) | 1984-08-18 |
| JPH0126267B2 true JPH0126267B2 (en) | 1989-05-23 |
Family
ID=11978090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1867283A Granted JPS59144336A (en) | 1983-02-07 | 1983-02-07 | Outer fan type rotary electric machine with air cooler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144336A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077521A3 (en) * | 1996-03-29 | 2002-02-13 | Newage International Limited | A terminal arrangement |
| EP3869043A1 (en) | 2015-06-01 | 2021-08-25 | SZ DJI Technology Co., Ltd. | System, kit, and method for dissipating heat generated by a motor assembly |
-
1983
- 1983-02-07 JP JP1867283A patent/JPS59144336A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144336A (en) | 1984-08-18 |
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