Motor for compressor, compressor, and refrigerating cycle apparatus

摘要

A motor for compressor according to the invention is a motor for compressor used for a motor element 13 of a compressor having the motor element 13 including a stator 12 and a rotor 11 and a compressing element 10 driven by the motor element 13, the motor has a rotating shaft 8 including a main shaft part 8b to be fitted to an upper bearing 6 of the compressing element 10 and a rotor fixing shaft 8a fixing the rotor 11 and having an outer diameter being smaller than an outer diameter of the main shaft part 8b, and the rotor comprises: a shaft through hole 31 formed at an approximate center part of the rotor 11 and to be fixed to the rotor fixing shaft 8a; and an air hole 33 provided around a circumference of the shaft through hole 31 and at least a part of which is located at inner side than an outer circumference of the main shaft part 8b of the rotating shaft 8.