Patent ID: 8894388

Claim:
A compressor, comprising: a stator that generates an electromagnetic field inside the stator; a first rotary member that rotates, within the stator, around a first rotary shaft that longitudinally extends concentrically with respect to a center of the stator, due to the electromagnetic field from the stator; a second rotary member that compresses a refrigerant in a compression space formed between the first and second rotary members while rotating, within the first rotary member, around a second rotary shaft upon receipt of a rotational force from the first rotary member; and a vane for that transmits the rotational force to the second rotary member from the first rotary member, and partitions the compression space into a suction region into which the refrigerant is sucked and a compression region in which the refrigerant is compressed and then discharged, wherein the first rotary member includes a cylindrical rotor that rotates within the stator and includes a plurality of permanent magnets inserted therein in an axial direction of the first rotary member and a cylinder inside the rotor that forms the compression space with the secondary rotary member, and wherein the rotor and the cylinder comprise a plurality of corresponding mounting projections and grooves on an outer peripheral surface of the cylinder and an inner peripheral surface of the rotor, respectively, such that the rotor and the cylinder are separately manufactured and coupled by matching the plurality of corresponding mounting projections and grooves on the outer peripheral surface of the cylinder and the inner peripheral surface of the rotor, respectively.