| 摘要 |
<P>PROBLEM TO BE SOLVED: To inhibit refrigerator oil contained in refrigerant gas from being discharged into a refrigeration cycle from an electric compressor. Ž<P>SOLUTION: A ring shape groove is provided on a hermetic vessel inner wall part and an oil return passage communicating to the same is provided on the hermetic vessel inner wall surface. Thereby, refrigerator oil is separated from refrigerant gas at the ring shape groove, and is effectively guided to a refrigerator oil reservoir at a lower part of an electric compressor through the oil return passage. Consequently, the electric compressor having excellent performances and inhibiting refrigerator oil from being discharged to an outside of the electric compressor is provided. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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