PURPOSE: To increase oil feeding quantity so as to suppress the wear of mechanical parts by forming radially-extended recessed parts on the side face of a roller forming a compression element in a compressor with a motor-driven element, a compression element and an oil feeder enclosed in a closed container.

CONSTITUTION: A motor-driven element 4 and a compression element 5 driven by the motor-driven element 4 are enclosed in a closed container 1. The motor- driven element 4 is formed of a stator 2 and a rotor 3. In the compression element 5, a roller 11 is mounted to the eccentric part 15 of a crankshaft 14 coupled to the rotor 3 so as to be brought into internal contact with a compression chamber 10, and a vane 12 is brought into pressure contact with the roller 11 to partition the compression chamber 10. The lower end of a feed oil pipe 18 is submerged in oil 6, and a coil spring 19 fixed to the crankshaft 14 is mounted inside the feed oil pipe 18. In this case, a roller 24 with radially- extended recessed parts 23 formed at the side face is used as the roller 11 so as to increase oil feeding quantity.