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公开(公告)号:EP0776081B1
公开(公告)日:2002-10-02
申请号:EP96118709.3
申请日:1996-11-21
申请人: Hitachi, Ltd.
CPC分类号: H02K9/18 , F28D15/0275 , H02K5/18
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公开(公告)号:EP0776081A1
公开(公告)日:1997-05-28
申请号:EP96118709.3
申请日:1996-11-21
申请人: HITACHI, LTD.
CPC分类号: H02K9/18 , F28D15/0275 , H02K5/18
摘要: In a totally-enclosed type motor, internal cooling air is passed through internal ventilation passages (4a) provided inside a stator frame (4) by an internal fan (9), and external cooling air is passed through external ventilation passages (4b) provided on the outside of the stator frame (4) by an external fan (12). Archly extending inner heat radiation ribs (4c) are provided on the inner surface of the ventilation passages (4a). The raise in temperature is reduced by an improvement in the cooling characteristic, thereby permitting a compact totally-enclosed type motor.
摘要翻译: 在全封闭式电动机中,内部冷却空气通过内部风扇(9)通过设置在定子框架(4)内部的内部通风通路(4a),外部冷却空气通过设置在外部通风通路(4b) 通过外部风扇(12)在定子框架(4)的外侧。 在通风通路(4a)的内表面设置有弓形延伸的内部散热肋(4c)。 通过改善冷却特性来降低温度升高,从而允许紧凑的全封闭式电动机。
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