公开(公告)号：US11428229B2

公开(公告)日：2022-08-30

申请号：US16423775

申请日：2019-05-28

Applicant: LG Electronics Inc.

Inventor： Howon Lee ,  Kangwook Lee ,  Cheolhwan Kim

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

Abstract: A scroll compressor is disclosed, which comprises an auxiliary discharge path capable of sufficiently making sure of a discharge area at an initial discharge stage. The compressor comprises a fixed scroll including a fixed end plate portion and a fixed wrap, and an orbiting scroll including an orbiting end plate portion and an orbiting wrap, wherein a discharge hole is formed in the fixed end plate portion, and an auxiliary discharge path for connecting a side of the orbiting wrap with a bottom surface of the orbiting wrap is provided to be communicated with the discharge hole, whereby a compressed refrigerant may be discharged through the auxiliary discharge path.

公开(公告)号：US11248608B2

公开(公告)日：2022-02-15

申请号：US16692112

申请日：2019-11-22

Applicant: LG ELECTRONICS INC.

Inventor： Kangwook Lee ,  Taekyoung Kim ,  Cheol Hwan Kim ,  Byeongchul Lee

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

Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.

公开(公告)号：US11053938B2

公开(公告)日：2021-07-06

申请号：US15974358

申请日：2018-05-08

Applicant: LG Electronics Inc.

Inventor： Cheolhwan Kim ,  Taekyoung Kim ,  Kangwook Lee ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C29/02 ,  F04C29/12 ,  F04C29/04

Abstract: Provided a scroll compressor including: a casing, an internal space in which is sealed; a drive motor that is configured with a stator which is located in the internal space, and a rotator which rotates within the stator, and that has an internal flow passage and an external flow passage that passes through the drive motor itself; a rotation shaft that is connected to the rotator of the drive motor; a compression unit that includes a first scroll which is provided below the drive motor, and a second scroll which is engaged with the first scroll; a discharge pipe that communicates with an upper space of the internal space, which is formed above to the drive motor; and an oil separation member that is provided between the drive motor and the discharge pipe, and from whose upper surface a space is formed to a predetermined depth.

公开(公告)号：USRE48456E1

公开(公告)日：2021-03-02

申请号：US16850234

申请日：2020-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

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

Abstract: A compressor is provided that may include a passage separator provided between an electric motor drive and a compression device to separate a refrigerant passage from an oil passage. The passage separator may include a first partition wall and a second partition wall. The first partition wall may be disposed between an inner circumferential surface of a casing and a discharge hole of the compression device, and the second partition wall may be disposed between the discharge hole and a balance weight. Accordingly, the refrigerant passage may be separated from the oil passage between the compression device and electric motor drive, thereby efficiently recovering oil to an oil storage space.

公开(公告)号：US10808698B2

公开(公告)日：2020-10-20

申请号：US15830222

申请日：2017-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Yong Kyu Choi ,  Cheol Hwan Kim ,  Kangwook Lee ,  Jungsun Choi

IPC: F04C28/26 ,  F04C18/02 ,  F04C28/10 ,  F04C23/00 ,  F04C29/12 ,  F01C21/00 ,  F04C15/00 ,  F04C29/00

Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.

公开(公告)号：US10648471B2

公开(公告)日：2020-05-12

申请号：US15448955

申请日：2017-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Taekyoung Kim ,  Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

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

Abstract: A scroll compressor is provided that may include a casing that contains oil in a lower space thereof; a drive motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotational shaft coupled to a rotor of the drive motor, and having an oil supply passage to guide the oil contained in the casing to an upper side of the drive motor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber by being engaged with the fixed wrap, and a rotational shaft coupling portion to couple the rotational shaft to the orbiting scroll in a penetrating manner; and an oil collection unit including an oil separator provided at the upper space of the casing, and an oil guide having a first end that communicates with the oil separator and a second end that communicates with a lower space of the fixed scroll.

公开(公告)号：US10345018B2

公开(公告)日：2019-07-09

申请号：US15447585

申请日：2017-03-02

Applicant: LG ELECTRONICS INC.

Inventor： Kangwook Lee ,  Dongkeun Yang ,  Choonjae Ryu

IPC: F04F5/00 ,  F04F5/44 ,  F04F5/46 ,  F25B9/08 ,  F25B41/00 ,  F25B1/06 ,  B60H1/32

Abstract: An ejector and a refrigeration cycle apparatus having an ejector are provided. The ejector may include an ejector body having an accommodation space therein, a suction portion through which a high pressure refrigerant and a low pressure refrigerant may be suctioned into the accommodation space, and a mixing portion configured to mix the high pressure refrigerant with the low pressure refrigerant; a nozzle provided in the ejector body, having a nozzle neck and an expansion portion, and configured to inject the high pressure refrigerant into the mixing portion; a first needle moveably provided at the expansion portion, and configured to control a flow sectional area of the expansion portion; a second needle moveably provided at the nozzle neck, and configured to control a flow sectional area of the nozzle neck; a first needle drive configured to drive the first needle; and a second needle drive configured to drive the second needle. With such a configuration, the flow sectional area of the nozzle neck and the flow sectional area of the expansion portion may be independently controlled in correspondence to a drive condition.

公开(公告)号：US10202978B2

公开(公告)日：2019-02-12

申请号：US15817584

申请日：2017-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim

IPC: F04C18/00 ,  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 second discharge inlet having a larger sectional area than the first discharge inlet. The first discharge inlet and the first discharge outlet may have a same cross section, and the second discharge inlet and the second discharge outlet may have a same cross section. Accordingly, a discharge delay in each compression chamber may be prevented in advanced, and thus, compression loss may be suppressed.

公开(公告)号：US09879679B2

公开(公告)日：2018-01-30

申请号：US14283187

申请日：2014-05-20

Applicant: LG Electronics Inc.

Inventor： Jaesang Lee ,  Kangwook Lee ,  Inho Won

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

CPC classification number: F04C29/12 ,  F04C18/0215 ,  F04C18/0261 ,  F04C23/008

Abstract: A scroll compressor is provided, in which a fixed side discharge opening is formed eccentric from a geometrical center of an orbiting scroll toward an orbiting side discharge opening, so as to overlap the orbiting side discharge opening across a relatively wide area. This may reduce flow resistance between the orbiting side discharge opening and the fixed side discharge opening. Accordingly, a refrigerant compressed in a final compression chamber may be rapidly discharged without being blocked by an upper frame, while maintaining a proper discharge pressure. Since uniform pressure may be maintained in compression chambers positioned at both sides of the scroll compressor, input losses due to over-compression may be reduced.