公开(公告)号：US11585344B2

公开(公告)日：2023-02-21

申请号：US17125181

申请日：2020-12-17

Applicant: LG Electronics Inc.

Inventor： Seungmock Lee ,  Cheolhwan Kim

IPC: F04C29/06 ,  F04C2/02 ,  F04C15/06 ,  F04C18/02 ,  F04C23/00

Abstract: The present disclosure relates to a compressor including a branch part for reducing vibration and noise caused by a refrigerant flowing inside a muffler by expanding an enclosed space formed by a compression part and the muffler in the direction of a rotation axis.

公开(公告)号：US11566623B2

公开(公告)日：2023-01-31

申请号：US17834264

申请日：2022-06-07

Applicant: LG Electronics Inc.

Inventor： Seungmock Lee ,  Jonghun Ha ,  Cheolhwan Kim

IPC: F04C18/02 ,  F04C29/00 ,  F04C29/06

Abstract: Disclosed herein is a scroll compressor having a shaft balancer capable of attenuating vibration while preventing deformation of the rotary shaft during operation at a high speed.

公开(公告)号：USRE49234E1

公开(公告)日：2022-10-04

申请号：US16850400

申请日：2020-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Taekyoung Kim ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C29/02 ,  F01C21/10 ,  F04C18/02 ,  F04C23/00

Abstract: A scroll compressor is provided that may include a casing; an electric motor drive having a stator fixed within the casing, and a rotor rotatably provided within the stator; a rotational shall coupled to the rotor to rotate along with the rotor; a compression device disposed at a lower portion of the electric motor drive to receive a rotational force from the rotational shaft and compress a refrigerant; and an oil storage space located within the casing. A plurality of oil discharge paths to allow oil accumulated at an upper portion thereof to be discharged to the oil storage space may be formed on an outer circumferential surface of the compression device to be separated from each other, and an overall cross-sectional area of the plurality of oil discharge paths may be about 2 to about 12% of an inner diameter cross-sectional area of the casing brought into contact with or separated from an outer circumferential surface of the compression device in the compression device.

公开(公告)号：US11346220B2

公开(公告)日：2022-05-31

申请号：US16790234

申请日：2020-02-13

Applicant: LG Electronics Inc.

Inventor： Sangbaek Park ,  Jungsun Choi ,  Cheolhwan Kim

IPC: F01C17/06 ,  F01C21/08 ,  F04C18/02 ,  F04C23/00

Abstract: A compressor includes a rotation shaft, a drive unit, and a compression unit. The compression unit includes a fixed scroll, an orbiting scroll, a main frame that is disposed on the fixed scroll, and an Oldham's ring coupled to the orbiting scroll and the main frame and configured to restrict rotation of the orbiting scroll. The Oldham's ring includes a ring body disposed between the orbiting scroll and the main frame, keys that protrude from the ring body that are each coupled to the orbiting scroll or the main frame, and caps that are inserted into the main frame and that each have (i) a coupling hole that receives a key among the keys and (ii) a machined portion that faces the coupling hole and that is spaced apart from at least a portion of an outer surface of the key.

公开(公告)号：US11339785B2

公开(公告)日：2022-05-24

申请号：US15956970

申请日：2018-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C23/00

Abstract: A compressor is provided. The compressor may include a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers. The fixed wrap and the orbiting wrap may have irregular wrap curves. At least one interference avoiding portion at which a spacing between the wraps is greater than an orbiting radius or at least one gap compensating portion at which the spacing between the wraps is smaller than the orbiting radius, in a state in which a center of the fixed scroll and a center of the orbiting scroll are aligned with each other, may be provided on a sidewall surface of the fixed wrap or the orbiting wrap, whereby frictional loss or abrasion due to interference between the wraps or a refrigerant leakage due to a gap between the wraps may be prevented.

公开(公告)号：US11293440B2

公开(公告)日：2022-04-05

申请号：US16680912

申请日：2019-11-12

Applicant: LG Electronics Inc.

Inventor： Taekyoung Kim ,  Kangwook Lee ,  Cheolhwan Kim

IPC: F04C29/02 ,  B01D45/16 ,  F25B49/02 ,  F04C18/02 ,  F04D31/00

Abstract: A compressor includes a case, a driving motor including a stator mounted inside the case and a rotor disposed radially inward of the stator and rotatable, a centrifugation space defined inside the case by one side of the driving motor and the case, a discharge pipe passing through the case and defining a refrigerant inlet hole, a rotation shaft coupled to the rotor to rotate, a compressing portion defined at the other side of the driving motor, where refrigerant is compressed by rotation of the rotation shaft, and a rotating member disposed to spread a rotary power of the rotor to the centrifugation space, thereby providing a centrifugal force to refrigerant and oil. The rotating member is disposed at one side of the rotor to rotate integrally with the rotor.

公开(公告)号：US11047386B2

公开(公告)日：2021-06-29

申请号：US16186221

申请日：2018-11-09

Applicant: LG Electronics Inc.

Inventor： Yongkyu Choi ,  Inho Won ,  Cheolhwan Kim

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/02 ,  F04C23/00 ,  F04C28/26 ,  F04C15/06 ,  F04C29/12 ,  F04C29/02

Abstract: A scroll compressor includes a discharge port at a central portion, and a pair of scrolls that define two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions defined at with an each interval along a compression path of each compression chamber. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion is defined as a first interval. The first interval of a the bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than that of the bypass portion belonging to the other compression chamber.

公开(公告)号：US10907634B2

公开(公告)日：2021-02-02

申请号：US16239620

申请日：2019-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim

IPC: F04C18/02 ,  F04C29/12 ,  F04C23/00

Abstract: A scroll compressor is provided that may include a first compression chamber, a second compression chamber separated from the first compression chamber, and having a greater compression ratio than the first compression chamber, a first discharge port that communicates with the first compression chamber and provided with a first discharge inlet and a first discharge outlet, and a second discharge port separated from the first discharge port, that communicates with the second compression chamber, and provided with a second discharge inlet and a second discharge outlet, the discharge outlet of at least one of the first discharge port or the second discharge port may have a larger sectional area than the discharge inlet. Accordingly, a discharge delay in each compression chamber may be prevented in advance, thereby suppressing compression loss.

公开(公告)号：US10724521B2

公开(公告)日：2020-07-28

申请号：US15491009

申请日：2017-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Jungsun Choi ,  Howon Lee ,  Cheolhwan Kim

IPC: F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C18/02 ,  F01C21/10 ,  F04C23/00 ,  F04C29/02

Abstract: A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.

公开(公告)号：US10648470B2

公开(公告)日：2020-05-12

申请号：US15491051

申请日：2017-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C18/10 ,  F01C1/02 ,  F04C28/28 ,  F04C29/00 ,  F04C29/12

Abstract: A scroll compressor is provided that may include an orbiting scroll having an orbiting wrap, and which performs an orbiting motion; and a fixed scroll having a fixed wrap to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the orbiting wrap. In a state in which the orbiting scroll and the fixed scroll are concentric with each other, when a distance between the orbiting wrap and the fixed wrap is defined as an orbiting radius, there exists an offset section having an interval larger than the orbiting radius, between a side surface of the orbiting wrap and a side surface of the fixed wrap which faces the orbiting wrap. With such a configuration, even if the fixed scroll or the orbiting scroll is transformed due to thermal expansion, interference between the fixed wrap and the orbiting wrap at a portion having a large transformation amount may be prevented. This may prevent a frictional loss or abrasion between the fixed wrap and the orbiting wrap. Further, this may restrict or minimize a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction chamber, resulting in enhanced compression efficiency.