JP2792272B2 - Cooling device for rotating electric machine stator - Google Patents
Cooling device for rotating electric machine statorInfo
- Publication number
- JP2792272B2 JP2792272B2 JP16227291A JP16227291A JP2792272B2 JP 2792272 B2 JP2792272 B2 JP 2792272B2 JP 16227291 A JP16227291 A JP 16227291A JP 16227291 A JP16227291 A JP 16227291A JP 2792272 B2 JP2792272 B2 JP 2792272B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- cooling air
- electric machine
- stator core
- rotating electric
- 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
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、回転電機の回転軸に
軸流ファンを備え、固定子を複流により通風冷却する冷
却装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device having an axial fan on a rotating shaft of a rotary electric machine and cooling a stator by double flow.
【0002】[0002]
【従来の技術】図3および図4は従来の回転電機の固定
子の冷却風の経路を示す縦断面図である。図において回
転電機は、固定子枠1に支持された固定子鉄心3と固定
子巻線4と、固定子鉄心3の背部に通風ダクト2とを備
えている。回転軸8に界磁巻線を収納した回転子を取り
付けてあり、回転軸8の両端に固定された軸流ファン5
により冷却風を回転電機に供給している。図3におい
て、軸流ファン5から送られる冷却風6の一部は、固定
子鉄心3と回転子とのエアギャップを経て、固定子鉄心
3および固定子巻線4を冷却したのち、固定子鉄心3の
背部に到り、風胴9を通って機外へ排出される。2. Description of the Related Art FIGS. 3 and 4 are longitudinal sectional views showing the path of cooling air of a stator of a conventional rotating electric machine. In the figure, the rotating electric machine includes a stator core 3 and a stator winding 4 supported by a stator frame 1, and a ventilation duct 2 behind the stator core 3. A rotor containing a field winding is attached to the rotating shaft 8, and an axial fan 5 fixed to both ends of the rotating shaft 8 is provided.
Supplies cooling air to the rotating electric machine. In FIG. 3, a part of the cooling air 6 sent from the axial flow fan 5 passes through an air gap between the stator core 3 and the rotor, cools the stator core 3 and the stator windings 4, and then cools the stator. It reaches the back of the iron core 3 and is discharged outside the machine through the wind tunnel 9.
【0003】図5は図4のV−V断面の半分を示す断面
図である。図4および図5において、ファン5から送ら
れる冷却風6の一部は、固定子巻線エンド室10を経
て、固定子鉄心3の背部に到り、通風ダクト2を経てさ
らに固定子鉄心3および固定子巻線4を冷却した後、再
び固定子鉄心3の背部に到り風胴9から機外へ排出され
る。FIG. 5 is a cross-sectional view showing a half of a VV cross section of FIG. 4 and 5, a part of the cooling air 6 sent from the fan 5 reaches the back of the stator core 3 through the stator winding end chamber 10, and further passes through the ventilation duct 2, and further passes through the stator core 3. After cooling the stator winding 4, it reaches the back of the stator core 3 again and is discharged from the wind tunnel 9 to the outside of the machine.
【0004】[0004]
【発明が解決しようとする課題】図4,図5において、
固定子枠1と固定子鉄心3の背部との間の冷却風供給室
7に配置された複数の通風ダクト2の開口部2aは、回
転電機の中心に向かって内径側に開口している。開口部
2aから吐出される冷却風6は固定子鉄心3の外径側に
供給される。なお、他室の通風を妨げないように、通風
ダクト2は数箇所に分散配置される。通風ダクト2から
吐出された冷却風6は、固定子鉄心3に入り、固定子鉄
心3および固定子巻線4を冷却するが、このとき通風ダ
クト2から吐出される主流部と通風ダクト2の間の部位
とでは冷却風量の差を生じ、固定子鉄心2および固定子
巻線4の温度が配置場所によりアンバランスを生ずる。
固定子鉄心3の溝に収納された複数の固定子巻線4の温
度を温度計によって測定しているが、検出された固定子
巻線4の温度が固定子巻線4の温度分布のどこを示すも
のか正確に把握できないという問題があった。In FIG. 4 and FIG.
The openings 2a of the plurality of ventilation ducts 2 arranged in the cooling air supply chamber 7 between the stator frame 1 and the back of the stator core 3 open toward the inner diameter side toward the center of the rotating electric machine. The cooling air 6 discharged from the opening 2 a is supplied to the outer diameter side of the stator core 3. Note that the ventilation ducts 2 are dispersedly arranged at several locations so as not to hinder ventilation in other rooms. The cooling air 6 discharged from the ventilation duct 2 enters the stator core 3 and cools the stator core 3 and the stator windings 4. At this time, the main flow discharged from the ventilation duct 2 and the cooling air 6 There is a difference in cooling air flow between the portions between the portions, and the temperature of the stator core 2 and the stator winding 4 may be unbalanced depending on the location.
The temperature of the plurality of stator windings 4 housed in the groove of the stator core 3 is measured by a thermometer. There was a problem that it could not be grasped exactly whether it indicated.
【0005】この発明は、回転電機固定子を均一に冷却
するような冷却装置を提供することを目的とする。An object of the present invention is to provide a cooling device for uniformly cooling a stator of a rotating electric machine.
【0006】[0006]
【課題を解決するための手段】回転軸に取り付けた軸流
ファンにより、冷却風を固定子と回転子とのエアギャッ
プを通って固定子鉄心および固定子巻線に流通させると
ともに、固定子枠と固定子鉄心背部との間の冷却風供給
室に配置された複数の通風ダクトの開口部から吐出され
た冷却風を前記固定子鉄心および前記固定子巻線に流通
させ、前記固定子鉄心および前記固定子巻線を冷却する
回転電機固定子の冷却装置において、前記複数の通風ダ
クトの開口部を前記固定子枠に向けて外側へ放射状に開
口させることによって、上記目的を達成する。Means for Solving the Problems A cooling fan is passed through an air gap between a stator and a rotor to a stator core and a stator winding by an axial fan mounted on a rotating shaft, and a stator frame is provided. The cooling air discharged from the openings of the plurality of ventilation ducts arranged in the cooling air supply chamber between the stator core back and the stator core is circulated through the stator core and the stator winding, and the stator core and In the cooling device for a stator of a rotating electric machine that cools the stator winding, the above object is achieved by radially opening openings of the plurality of ventilation ducts toward the stator frame.
【0007】なお、請求項1記載の回転電機固定子の冷
却装置において、通風ダクトの開口部は冷却風供給室内
に固定子鉄心の外周を複数に均等に分割された位置に配
置すれば、冷却風供給室の風圧を均一化させる上に好適
である。In the cooling device for a rotating electric machine stator according to the first aspect of the present invention, if the opening of the ventilation duct is disposed in the cooling air supply chamber at a position where the outer periphery of the stator core is equally divided into a plurality of portions, cooling is performed. This is suitable for making the wind pressure in the wind supply chamber uniform.
【0008】[0008]
【作用】この発明においては、複流により固定子を通風
冷却する回転電機の冷却風供給室の通風ダクトの開口部
を固定子枠に向けて外側へ放射状に開口させることによ
り、通風ダクトから吐出される冷却風は固定子枠に当た
って混合され、冷却風供給室の風圧は均一化されるの
で、固定子鉄心および固定子巻線には全周にわたり均等
量の冷却風が流れ、固定子鉄心および固定子巻線を均等
に冷却することができる。According to the present invention, the air is discharged from the ventilation duct by radially opening the opening of the ventilation duct of the cooling air supply chamber of the rotating electric machine which cools the stator by the double flow. The cooling air blows against the stator frame and mixes, and the air pressure in the cooling air supply chamber is equalized.Therefore, an equal amount of cooling air flows around the stator core and stator windings all around, and the stator core and stator The child winding can be cooled evenly.
【0009】なお、請求項1記載の回転電機固定子の冷
却装置において、通風ダクトの開口部は、冷却風供給室
内に固定子鉄心の外周を複数に均等に分割する位置に配
置すれば、開口部から吐出する冷却風は均等に分布して
固定子枠に当たって跳ね返り、混合されるので冷却風供
給室は隈無く風圧が均一化される。In the cooling device for a rotating electric machine stator according to the present invention, the opening of the ventilation duct may be arranged in the cooling air supply chamber at a position where the outer periphery of the stator core is equally divided into a plurality of parts. The cooling air discharged from the section is evenly distributed, rebounds and hits the stator frame, and is mixed, so that the cooling air supply chamber has uniform air pressure throughout.
【0010】[0010]
【実施例】図1はこの発明の実施例による冷却装置を備
えた回転電機の固定子の冷却風の経路を示す断面図、図
2は図1のII−II断面の半分を示す断面図である。図1
および図2において、図4,図5および図6と同じ部位
は同じ符号を付してある。固定子枠1,固定子鉄心3,
固定子巻線4,軸流ファン5,回転軸8については図3
と同様なので説明を省略する。軸流ファン5により固定
子鉄心3と回転子との間のエアギャップに供給される冷
却風6の経路は、図3と同様である。1 is a sectional view showing a cooling air path of a stator of a rotating electric machine provided with a cooling device according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a half of a II-II section in FIG. is there. FIG.
2 and FIG. 2, the same parts as those in FIG. 4, FIG. 5, and FIG. Stator frame 1, Stator core 3,
The stator winding 4, axial fan 5, and rotating shaft 8 are shown in FIG.
Therefore, the description is omitted. The path of the cooling air 6 supplied to the air gap between the stator core 3 and the rotor by the axial fan 5 is the same as in FIG.
【0011】この発明の実施例による冷却装置は、固定
子枠1と固定子鉄心3の背部との間の冷却風供給室7に
配置された複数の通風ダクト2の開口部2aを固定子枠
1に向かって外側へ放射状に開口させた。軸流フアン5
から送られた冷却風6の一部は、固定子巻線エンド室1
0を経て、固定子鉄心3の背部に到り、通風ダクト2を
通って冷却風供給室7に入り、通風ダクト2の開口部2
aから固定子枠1に向かって外側へ放射状に吐出され
る。その結果、冷却風6は、固定子枠1に当たって跳ね
返り、混合されて冷却風供給室7の風圧は均一化され、
固定子鉄心3および固定子巻線4を均等に冷却する。In the cooling device according to the embodiment of the present invention, the openings 2a of the plurality of ventilation ducts 2 arranged in the cooling air supply chamber 7 between the stator frame 1 and the back of the stator core 3 are fixed to the stator frame. Radially open outward toward 1. Axial flow fan 5
Of the cooling air 6 sent from the stator winding end chamber 1
0, reaches the back of the stator core 3, enters the cooling air supply chamber 7 through the ventilation duct 2, and opens the opening 2 of the ventilation duct 2.
a, radially outwardly toward the stator frame 1. As a result, the cooling air 6 hits the stator frame 1 and rebounds, is mixed, and the air pressure in the cooling air supply chamber 7 is made uniform,
The stator core 3 and the stator windings 4 are uniformly cooled.
【0012】なお、図2の例は、通風ダクト2の開口部
2aを冷却風供給室7内に固定子鉄心3の外周を14に
均等に分割する位置に配置したので、冷却風6は固定子
枠1に当たって冷却風供給室内は隈無く風圧が均一にな
る。In the example shown in FIG. 2, the cooling air 6 is fixed since the opening 2a of the ventilation duct 2 is disposed in the cooling air supply chamber 7 at a position where the outer periphery of the stator core 3 is equally divided into 14 parts. When hitting the child frame 1, the wind pressure becomes uniform throughout the cooling air supply chamber.
【0013】[0013]
【発明の効果】この発明によれば、冷却風供給室の通風
ダクトの開口部を固定子枠に向けて外側へ放射状に開口
させたことによって、開口部から吐出された冷却風は、
一旦固定子枠の壁に当たり、混合されて冷却風供給室の
風圧は均一化され、固定子鉄心および固定子巻線に均等
量の冷却風が流れるので、固定子の各部の温度を均一化
するため、温度計によって検出された温度は、固定子巻
線の温度を正確に示している。その結果、回転電機の信
頼性を向上させることができる。According to the present invention, since the opening of the ventilation duct of the cooling air supply chamber is radially opened outward toward the stator frame, the cooling air discharged from the opening is
Once it hits the wall of the stator frame, it is mixed and the air pressure in the cooling air supply chamber is made uniform, and an equal amount of cooling air flows through the stator core and stator winding, so that the temperature of each part of the stator is made uniform. Therefore, the temperature detected by the thermometer accurately indicates the temperature of the stator winding. As a result, the reliability of the rotating electric machine can be improved.
【図1】この発明の実施例による冷却装置を備えた回転
電機の固定子の冷却風の経路を示す断面図である。FIG. 1 is a cross-sectional view illustrating a cooling air path of a stator of a rotating electric machine including a cooling device according to an embodiment of the present invention.
【図2】図1のII−II断面の半分を示す断面図である。FIG. 2 is a cross-sectional view showing a half of the II-II cross section of FIG.
【図3】従来の回転電機の固定子の冷却風の経路を示す
縦断面図である。FIG. 3 is a longitudinal sectional view showing a path of cooling air of a stator of a conventional rotating electric machine.
【図4】従来の回転電機の固定子の冷却風の他の経路を
示す縦断面図である。FIG. 4 is a longitudinal sectional view showing another route of cooling air of a stator of a conventional rotating electric machine.
【図5】図4のV−V断面の半分を示す断面図である。FIG. 5 is a sectional view showing a half of a VV section in FIG. 4;
1 固定子枠 2 通風ダクト 2a 開口部 3 固定子鉄心 4 固定子巻線 5 軸流ファン 6 冷却風 7 冷却風供給室 8 回転軸 DESCRIPTION OF SYMBOLS 1 Stator frame 2 Ventilation duct 2a Opening 3 Stator iron core 4 Stator winding 5 Axial fan 6 Cooling air 7 Cooling air supply chamber 8 Rotating shaft
Claims (2)
却風を固定子と回転子とのエアギャップを通って固定子
鉄心および固定子巻線に流通させるとともに、固定子枠
と固定子鉄心背部との間の冷却風供給室に配置された複
数の通風ダクトの開口部から吐出された冷却風を前記固
定子鉄心および前記固定子巻線に通風させ、前記固定子
鉄心および前記固定子巻線を冷却する回転電機固定子の
冷却装置において、前記複数の通風ダクトの開口部を前
記固定子枠に向けて外側へ放射状に開口させることを特
徴とする回転電機固定子の冷却装置。An axial fan mounted on a rotating shaft allows cooling air to flow through an air gap between a stator and a rotor to a stator core and a stator winding, and also allows a stator frame and a stator core to flow. Cooling air discharged from openings of a plurality of ventilation ducts disposed in the cooling air supply chamber between the back and the back is passed through the stator core and the stator winding, and the stator core and the stator winding are A cooling device for a rotating electric machine stator for cooling a wire, wherein openings of the plurality of ventilation ducts are radially opened outward toward the stator frame.
において、通風ダクトの開口部は冷却風供給室内に固定
子鉄心の外周を複数に均等に分割された位置に配置され
ていることを特徴とする回転電機固定子の冷却装置。2. The cooling device for a rotating electric machine stator according to claim 1, wherein the opening of the ventilation duct is disposed in the cooling air supply chamber at a position where the outer periphery of the stator core is equally divided into a plurality. A cooling device for a rotating electric machine stator, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16227291A JP2792272B2 (en) | 1991-06-06 | 1991-06-06 | Cooling device for rotating electric machine stator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16227291A JP2792272B2 (en) | 1991-06-06 | 1991-06-06 | Cooling device for rotating electric machine stator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04359651A JPH04359651A (en) | 1992-12-11 |
JP2792272B2 true JP2792272B2 (en) | 1998-09-03 |
Family
ID=15751313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16227291A Expired - Lifetime JP2792272B2 (en) | 1991-06-06 | 1991-06-06 | Cooling device for rotating electric machine stator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2792272B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108644075A (en) * | 2018-06-05 | 2018-10-12 | 西安盾安电气有限公司 | A kind of cooling wind diversion distribution device and box wind-driven generator |
-
1991
- 1991-06-06 JP JP16227291A patent/JP2792272B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04359651A (en) | 1992-12-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0563051A1 (en) | Methods and apparatus for ventilating electric machines. | |
JPS5914968B2 (en) | Ventilation cooling system for rotating electrical machines | |
JP4897587B2 (en) | Rotating electric machine | |
WO2002071577A1 (en) | Rotary electric machinery | |
JP2792272B2 (en) | Cooling device for rotating electric machine stator | |
US4908537A (en) | Pole ventilation of radially ventilated rotors | |
JPS6026502Y2 (en) | rotor of rotating electric machine | |
JPS596135B2 (en) | Salient pole rotating electric machine | |
JPS6110458Y2 (en) | ||
JPH11146587A (en) | Rotor of electric rotary machine | |
JPH083173Y2 (en) | Rotating electric machine | |
JPS6114304Y2 (en) | ||
JPH07245894A (en) | Cooling device for coil end part of rotary electric machine | |
JPS59175353A (en) | Cooler of rotary electric machine | |
JPH083168Y2 (en) | Rotating electric machine cooling system | |
JPS59172953A (en) | Ventillation cooler of rotary electric machine | |
JPS5996847A (en) | Gas-cooled rotary electric machine | |
JPH02136050A (en) | Cooling and ventilating apparatus of electrical rotating machine | |
JPH0386037A (en) | Ventilated electric rotary machine for vehicle | |
JPH0229796Y2 (en) | ||
JPS57166850A (en) | Cooler for rotary electric machine | |
JP2000050576A (en) | Apparatus for cooling rotor of rotating electric machine | |
JPS6220779B2 (en) | ||
JPS6026500Y2 (en) | Salient pole rotating electric machine | |
JP2006081367A (en) | Rotor of rotating electric machine |