Dynamo-electric machine rotor

Details Dynamo-electric machine rotor Dynamo-electric machine rotor

2007-04-27

2010-10-12

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S052000

Reexamination Certificate

active

07812501

ABSTRACT:
It is an object of this invention to provide a dynamo-electric machine rotor which effectively and uniformly cools a rotor coil outside a rotor core by forming a ventilating groove in the rotor coil, tolerates large field current, and has high reliability. There is provided a dynamo-electric machine rotor in which spaced core slots are formed in a cylindrical rotor core30, rotor coils10of stacked turns are fitted into the core slots to form multiple nested rings around a magnetic pole of the rotor, ends of the rotor coils are fixed by an retaining ring, and a spacer20is arranged in each of circumferential gaps between the ends of the rotor coils, wherein each spacer20has a length not more than the lengths of linear portions12at the ends of corresponding ones of the rotor coils10, a cut-out22for ventilation of coolant gas is formed across at least one of two sides of the spacer, and the spacer is in contact with the rotor coils at the two sides of the spacer at a position located furthest inside in the radial direction of the rotor and an arbitrary position.

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patent: 6628020 (2003-09-01), Tong
patent: 6952070 (2005-10-01), Kaminski et al.
patent: 09322454 (1997-12-01), None
patent: 10336964 (1998-12-01), None

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