Lg Electronics Inc.

Sangha Lee

Jaeyeol Lee

Ki Sun Kim

Jebyoung Moon

Taeyoung Noh

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 (FeO) film on a surface of the coupling groove. A manufacturing method of the rotary compressor is also described.

Rotary compressor having a combined vane-roller structure including a ferrosoferric oxide film on a surface of a coupling groove of the roller

A rotary compressor includes a cylinder having a vane slot and a compression chamber, a shaft having an eccentric portion and configured to perpendicularly pass through a center of the compression chamber, a roller having a coupling groove and configured to orbit in the compression chamber by rotation of the shaft, and a vane having a vane hinge coupled to the coupling groove and a vane body being inserted into the vane slot and configured to divide the compression chamber into a discharge space and a suction space. A shape of the discharge-sided groove close to the discharge space and a shape of the suction-sided groove close to the suction space are asymmetrically formed between the vane hinge and the vane body with respect to the a central axis of the vane.

Rotary compressor with a vane discharge-sided groove and a vane suction-sided groove

A rotary compressor includes a roller that is provided with oil grooves concavely formed in a centrifugal direction from an inner circumferential surface of the roller facing an eccentric portion. The oil grooves are disposed at positions not overlapping an intake and a discharge port in an axial direction.

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Seoul, South Korea

Sangha Lee