Dynamo-Electric Machine

Abstract

The invention prevents a temperature in an end portion of a stator iron core from becoming excessively high due to a heat generated in the end portion of the stator iron core of a turbine generator. In a dynamo-electric machine provided with a stator constituted by a stator iron core, a stator iron core pressing member and a stator coil, a rotor constituted by a rotor iron core, a rotor coil and a holding ring, and a baffle plate arranged in an inner diameter side of an end portion of the stator iron core and distributing a cooling medium cooling an inner side of the machine, the baffle plate is provided for forming a flow of the cooling medium along an inner periphery of the stator iron core pressing member and/or an inner peripheral surface of the end portion of the stator iron core.

1 - 8 . (canceled)  
   
   
       9 . A dynamo-electric machine comprising: 
 a stator constituted by a stator iron core, a stator iron core pressing member for pressing said stator iron core, and a stator coil wound around said stator iron core;    a rotor constituted by a rotor iron core inserted to an inner periphery of said stator via a gap, a rotor coil inserted into a plurality of slots in said rotor iron core, and a holding ring covering an outer periphery of a rotor coil end portion protruding from said rotor iron core end portion; and    a baffle plate arranged in an inner diameter side of said stator iron core end portion to distribute a cooling medium cooling an inner side of the machine,    wherein said baffle plate extends in an axial direction along said stator iron core end portion and an inner peripheral side of the stator iron core end portion and an inner peripheral side of the stator iron core pressing member, a first gap flowing the cooling medium is provided between said baffle plate and an inner periphery of said stator iron core pressing member and/or between the baffle plate and inner periphery of said stator iron core end portion, a second gap is provided between said baffle plate and said holding ring or between said baffle plate and said rotor iron core, said first gap is approximately uniform in the flow direction of the cooling medium, and said first gap generates a cooling medium flow along the inner periphery of said stator iron core pressing member and/or the inner peripheral surface of said stator iron core end portion.