公开(公告)号：US11555404B2

公开(公告)日：2023-01-17

申请号：US16910856

申请日：2020-06-24

Applicant: LG Electronics Inc.

Inventor： Ki Sun Kim ,  Sangha Lee ,  Jebyoung Moon ,  Taeyoung Noh ,  Jaeyeol Lee

IPC: F01C21/08 ,  F04C18/356 ,  F04C23/00 ,  F04C18/324 ,  B22F3/10 ,  B22F3/24 ,  B22F5/00

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.

公开(公告)号：US11313367B2

公开(公告)日：2022-04-26

申请号：US16880158

申请日：2020-05-21

Applicant: LG Electronics Inc.

Inventor： Ki Sun Kim ,  Sangha Lee ,  Jaeyeol Lee

IPC: F04C18/324 ,  F04C29/02 ,  F04C18/356

Abstract: 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.

公开(公告)号：US11493044B2

公开(公告)日：2022-11-08

申请号：US16931163

申请日：2020-07-16

Applicant: LG Electronics Inc.

Inventor： Ki Sun Kim ,  Sangha Lee ,  Jaeyeol Lee

IPC: F04C18/324 ,  F01C21/08 ,  F04C29/12

Abstract: 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.