TOTALLY-ENCLOSED ROTARY ELECTRIC MACHINE

• Main Author: NAKAGAWA HITOSHI
• Format: Patent
• Language: English; Japanese
• Published: 18.05.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a totally-enclosed rotary electric machine with an inner fan capable of uniformly distributing the temperature within a frame.SOLUTION: The rotary electric machine has a frame 16 air-tightly sealing a rotor 11 and a stator 14; and an inner fan 19 fixed to a rotation shaft 10 in the frame 16. The frame 16 includes a first bracket 17 that seals a first end of the frame 16 in an axial direction and supports a first bearing 12. The inner fan 19 is disposed between the first bracket 17 and a first end closer to the first bracket 17 in an axial direction of the rotor 11. The inner fan 19 has plural radial paths 20 for guiding the air from the first end of the rotor 11 in the axial direction to the outside in a radial direction in the axial direction; and a blade part 21 protruding toward the first bracket 17 in the axial direction neighboring to the plural radial paths 20 closer to the first bracket 17. 【課題】内部ファンを備えた全閉形回転電機において、フレーム内の温度の不均一を緩和する。【解決手段】回転電機は、回転子１１と固定子１４とを密閉して覆うフレーム１６と、フレーム１６内で回転軸１０に固定された内部ファン１９と、を有する。フレーム１６は、その軸方向の第１の端部を密封して第１の軸受１２を支持する第１のブラケット１７を含む。内部ファン１９は、第１のブラケット１７と第１のブラケット１７に近い側の回転子１１の軸方向の第１の端部との間に配置され、回転子１１の軸方向の第１の端部から軸方向外側でかつ半径方向外側に向けて空気を導く複数の放射通路部２０と、放射通路部２０の第１のブラケット１７に近い側に隣接して第１のブラケット１７に向かって軸方向に突出する羽根部２１とを有する。【選択図】図１