Compressor

摘要

A compressor is provided in which a rotary member is suspended on a stationary member and rotates to compress a refrigerant. In the stationary member, top and bottom ends of a stationary shaft are fixed to improve structural stability and assembly properties. Bearing covers are provided on a contact portion of the stationary member and the rotary member, such that the rotary member may rotate when suspended on the stationary member, which stabilizes operation. In the rotary member, a vane is integrally formed with a roller and mounted on a vane mounting hole of a cylinder-type rotor. Although, the rotary member is provided on an outer circumferential surface of the stationary member, suction and discharge operations of the refrigerant are performed in an axial direction, which lowers product height. Oil stored in a hermetic container is supplied to a lubrication passage provided between the stationary member and the rotary member.

主权项

1. A compressor, comprising:
a hermetic container into and from which a refrigerant is sucked and discharged, respectively; a stator fixed in the hermetic container; a stationary member including a stationary shaft formed in a cylindrical shape and having both ends immovably installed in the hermetic container, and an eccentric portion formed in a cylindrical shape, having a diameter larger than a diameter of the stationary shaft, that protrudes from the stationary shaft in the entire radial direction of the stationary shaft, and is eccentrically formed on the stationary shaft; a rotary member including a cylinder-type rotor that rotates around the stationary shaft by a rotating electromagnetic field from the stator, a roller formed in a cylindrical shape and applied with a rotation force from the cylinder-type rotor, that rotates around the eccentric portion of the stationary member with the cylinder-type rotor, wherein a compression space is defined between the roller and the cylinder-type rotor, and a vane fixedly formed on the roller that protrudes from an outer circumferential surface of the roller to the cylinder-type rotor, transfers the rotation force from the cylinder-type rotor to the rollers and partitions the compression space into a suction pocket into which the refrigerant is sucked and a compression pocket in and from which the refrigerant is compressed and discharged, respectively, wherein a vane mounting hole is formed in the cylinder-type rotor to accommodate the protruding vane, and wherein the cylinder-type rotor and the roller rotate together such that opposite portions are repeatedly brought into close and distant positions; and upper and lower bearing covers that form upper and lower portions of the rotary member, rotate with the rotary member, rotatably support the rotary member with respect to the stationary member, and define the compression space in the rotary member, wherein inner circumferential surfaces of the upper and lower beating covers are rotatably journal-supported on the stationary shaft, and wherein a bottom surface of the upper bearing cover is rotatably thrust-supported on a top surface of the eccentric portion of the stationary member.