Rotary compressor having a combined vane-roller structure
AssigneeLG Electronics Inc.
InventorsKi Sun KIM, Sangha LEE, Jebyoung MOON, Taeyoung NOH, Jaeyeol LEE
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Abstract
A rotary compressor has a combined vane-roller structure that may ensure improved productivity and reliability through control of mechanical properties. The rotary compressor includes a coupling groove which is disposed at one side of an outer circumferential surface of the roller, which has a circular arc shape from an outer diameter of the roller towards an inner diameter of the roller, and which is configured to couple a vane and the roller, and includes a ferrosoferric oxide (Fe3O4) film on a surface of the coupling groove. A manufacturing method of the rotary compressor is also described.
Claims20
A rotary compressor, comprising:
- a cylinder that defines an inner space configured to receive refrigerant, the cylinder further defining a vane slot that is connected to the inner space and extends in a radial direction of the cylinder;
- a roller that is disposed in the inner space of the cylinder, that has a ring shape, and that is configured to compress the refrigerant in the cylinder, the roller defining a coupling groove that has a circular arc shape and is recessed from an outer circumferential surface of the roller toward a center of the roller;
- and
- a vane disposed in the vane slot and configured to move along the vane slot, the vane being configured to couple to the coupling groove of the roller and to divide the inner space of the cylinder into a suction space and a compression space,
- wherein the roller comprises a ferrosoferric oxide (Fe3O4) film disposed on a surface defining the coupling groove.
A method for manufacturing a rotary compressor, the rotary compressor including a roller that defines a coupling groove at an outer circumferential surface of the roller and a vane that is configured to couple to the couple groove, the method comprising:
- providing powder for sintering;
- compacting the powder in a mold having a shape corresponding to the roller;
- sintering the compacted powder;
- performing a primary shaping process to adjust a shape of the roller detached from the mold;
- based on performing the primary shaping process, steaming the roller;
- and
- based on steaming the roller, performing a secondary shaping process to further adjust the shape of the roller.
Dependencies are inferred from the claim text.