STATOR FOR DYNAMO-ELECTRIC MACHINE, AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To improve the efficiency of coil cooling by effectively transmitting the heat that a coil generates to the iron core of a stator. SOLUTION: Smoothing is performed for a face at which the bundle 14a of coils contacts with a stator iron core (b). For this smoothing, it will do to process it to such a degree that it does not break the insulating film 18 of a rectangular coil 16, leaving an insulating material at the smoothed face of the bundle 14a of coils, or it will do to process it so far as to remove the insulating film 18 of the rectangular coil 16, and then to form an insulating film on this processed face. As regards the formation of the insulating film on the smoothed face, it will do to so form an insulating film 19 as to cover the entire bundle 14a of coils by wrapping, for example, an insulating tape, etc. (c), or it will do to form an insulating film 20 anew only on the smoothed face (d). Since the bundle 14a of coils where smoothing is applied can transmit heat efficiently when contacting with the stator iron core, the efficiency of coil cooling is improved. COPYRIGHT: (C)2005,JPO&NCIPI