Patent ID: 7367790

Claim:
A double-acting type orbiting vane compressor, comprising: a shell; an inlet tube through which refrigerant gas enters; an outlet tube through which refrigerant gas is discharged; a crankshaft installed inside the shell, rotated by a drive unit and comprising a crank pin eccentrically formed at an upper end of the crankshaft, the crankshaft having an oil supplying channel formed longitudinally therethrough; an orbiting vane which performs an orbiting movement due to rotation of the crankshaft, comprising a circular vane plate, an upper circular vane formed on a middle of an upper surface of the circular vane plate and protruding upward, a lower circular vane formed on a middle of a lower surface of the circular vane plate, protruding downward and corresponding to the upper circular vane, and a boss formed at a middle of an inner area of the lower circular vane and protruding downward, the boss being configured to receive an upper end of the crank pin; an upper compression unit in which the upper circular vane is positioned, which compresses the refrigerant gas which enters through the inlet tube due to an orbiting movement of the upper circular vane; a lower compression unit in which the lower circular vane is positioned, which compresses the refrigerant gas which enters through the inlet tube due to an orbiting movement of the lower circular vane; a high and low pressure separating plate disposed between an outer circumferential part of an upper cylinder and an inner circumferential part of the shell; a lower separating plate attached to a lower surface of a lower cylinder such that the lower separating plate surrounds outlet ports of the lower cylinder; and a guide channel which guides high-pressure refrigerant gases discharged through the outlet ports of the lower cylinder to the outlet tube, wherein the inlet tube comprises a single inlet tube which penetrates the shell, the refrigerant gas which enters the inlet tube is introduced into the respective upper and lower cylinders and is guided into the upper and lower compression units through inlet ports formed at the respective upper and lower cylinders, and the refrigerant gas which is compressed by the upper and lower compression units is discharged through outlet ports formed at the respective upper and lower cylinders.