Patent ID: 9097254
Filing Date: 2015-08-04
Classification: F01C,F04C

Abstract:
1. A compressor, comprising: a hermetic container that stores oil at a lower portion thereof, wherein a suction tube and a discharge tube are installed on the hermetic container; a stator mounted within the hermetic container that generates a rotating electromagnetic field inside the stator; a cylinder type rotor that is rotated within the stator by the rotating electromagnetic field of the stator and defines a compression chamber in the cylinder type rotor as well as within the stator, the cylinder type rotor comprising a first cover and a second cover secured to upper and lower portions thereof, respectively, that rotate integrally with the cylinder type rotor; a roller that rotates within the compression chamber of the cylinder type rotor by a rotational force transferred from the cylinder type rotor and compresses a refrigerant during rotation; a rotational shaft integrally formed with the roller, that extends in an axial direction of the roller; a vane that divides the compression chamber into a suction region into which the refrigerant is sucked and a compression region in which the refrigerant is compressed and discharged from, the vane transferring the rotational force from the cylinder type rotor to the roller; and a plurality of oil feed passages provided in the rotational shaft and the roller, wherein one end of the rotational shaft is dipped into the oil at the lower portion of the hermetic container, the plurality of oil feed passages feeds the oil pumped from the lower portion of the hermetic container along an interior of the rotational shaft, by a rotating motion of the rotational shaft to a plurality of areas where two or more members selected from the first cover, the second cover, the cylinder type rotor, the roller, the rotational shaft, the vane, and bushes that guide the vane to make a linear reciprocating motion are slidingly engaged with one another, wherein a compressor assembly including the stator, the cylinder type rotor, the roller, the rotational shaft, and the vane is installed in the hermetic container with a gap at an inside space of the hermetic container, and wherein a low-pressure refrigerant is sucked into the inside space of the hermetic container through the suction tube and is then sucked into the suction region from the inside space of the hermetic container, and a high-pressure refrigerant compressed in the compression region is discharged outside of the hermetic container through the discharge tube, which communicates with the compression region.