| 摘要 |
PROBLEM TO BE SOLVED: To provide a totally enclosed motor that has high performance of cooling, even if miniaturized. SOLUTION: The totally enclosed motor which includes a rotor 1 disposed inside a housing 5 to transfer heat to the housing 5, a stator 2 disposed inside the housing to transfer heat to the housing, and an inner fin 6 which is disposed in the rotor 1 and agitates air inside the housing 5. The totally enclosed motor Z is cooled by a forced convection by an outer fan 8 disposed outside the housing 5, or by a natural convention in the vicinity of an outer surface of the housing 5, and a shape of the rotor 1 is different between one end side and the other end side of the rotor in an extending direction of a rotary shaft 3 of the rotor. COPYRIGHT: (C)2011,JPO&INPIT
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