公开(公告)号：US11193529B2

公开(公告)日：2021-12-07

申请号：US16812806

申请日：2020-03-09

Applicant: LG Electronics Inc.

Inventor： Changgook Moon ,  Jun Chul Oh ,  Seheon Choi

IPC: F16C17/04 ,  F04D29/051

Abstract: Disclosed herein is a thrust bearing for a turbo compressor, the thrust bearing has a structure that is modified in response to a portion where a deformation amount of a thrust runner is relatively large on the basis of magnitude of a force applied at the time of rotation of a shaft of a turbo compressor, to maintain a thickness of an oil film constantly and to increase a load supporting force of the thrust bearing, thereby ensuring improved durability of the thrust bearing.

公开(公告)号：US11002287B2

公开(公告)日：2021-05-11

申请号：US15971354

申请日：2018-05-04

Applicant: LG Electronics Inc.

Inventor： Sungyong Ahn ,  Seheon Choi

IPC: F04D29/44 ,  F04D29/58 ,  F04D29/60 ,  F04D29/40 ,  F25B31/00 ,  F04D25/06 ,  F04D29/051 ,  F04D29/057 ,  F25B31/02 ,  F04D29/62 ,  F04D29/041 ,  F04D17/08 ,  F04D29/52 ,  F25B1/053

Abstract: A turbo compressor includes a driving unit including a stator and a rotor that are configured to generate a rotational force and a rotary shaft that is connected to and rotated by the rotor, an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft and a casing that receives the driving unit and the impeller and supports the rotary shaft. The casing includes a first shell to which the stator is fixed and that rotatably supports the rotary shaft, and a second shell that is spaced apart from the first shell and surrounds the first shell. A shell passage is defined between the first and second shells. The discharged refrigerant cools the driving unit, which improves the efficiency of the compressor.

公开(公告)号：US10605251B2

公开(公告)日：2020-03-31

申请号：US15864082

申请日：2018-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Junchul Oh ,  Byeongchul Lee ,  Seheon Choi

IPC: F04D17/12 ,  F04D27/00 ,  F04D29/041 ,  F04D29/051 ,  F04D29/28 ,  F04D29/053 ,  F04D29/42 ,  F04D29/58 ,  F04D25/06

Abstract: A turbo compressor is provided that may include an impeller housing having an impeller accommodation space, an inlet formed at a first side of the impeller accommodation space, and an outlet formed at a second side of the impeller accommodation space that communicates with the inlet; an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotary shaft by being coupled to the rotary shaft, and configured to centrifugally-compress a fluid suctioned through the inlet of the impeller housing and discharge the compressed fluid outside of the impeller housing through the outlet; a back pressure space formed between a rear surface of the impeller and the impeller housing; a back pressure passage connected between the outlet of the impeller housing and the back pressure space; and a back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween.

公开(公告)号：US20170067466A1

公开(公告)日：2017-03-09

申请号：US15246650

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Junchul OH ,  Jaeha Lee ,  Seheon Choi ,  Byeongchul Lee

IPC: F04C29/00 ,  F04C18/02

CPC classification number: F04C29/0057 ,  F01C17/066 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/0085 ,  F04C2210/26 ,  F04C2230/41 ,  F04C2230/91 ,  F04C2240/10 ,  F04C2240/20 ,  F04C2240/30 ,  F04C2270/16 ,  F05C2201/021 ,  F05C2201/0454 ,  F05C2201/0466 ,  F05C2203/04 ,  F05C2251/10 ,  F05C2253/12

Abstract: A scroll compressor is provided that may include a casing having a sealed inner space; a drive motor provided in the inner space of the casing to generate a rotational force; a rotational shaft rotatably coupled to the drive motor; an orbiting scroll formed of an aluminum material, and coupled to the rotational shaft to perform an orbiting movement; a fixed scroll coupled to the orbiting scroll to form a compression space; and an Oldham ring coupled to the orbiting scroll, and formed of a sintered metal. With this structure, it may be possible to prevent the Oldham ring from being worn out due to contact with the orbiting scroll. Further, a weight loss portion or wear-resistant coating layer may be formed on a portion of the Oldham ring, thereby suppressing or preventing vibration noise of the scroll compressor from being increased due to a weight increase of the Oldham ring.

Abstract translation: 提供一种涡旋压缩机，其可以包括具有密封的内部空间的壳体; 设置在所述壳体的内部空间中以产生旋转力的驱动马达; 可旋转地联接到所述驱动电动机的旋转轴; 由铝材料形成的旋转涡卷，并且联接到所述旋转轴以执行轨道运动; 固定涡旋盘，其联接到所述绕动涡旋件以形成压缩空间; 以及联接到绕动涡旋件的十字环，并且由烧结金属形成。 利用这种结构，可以防止由于与绕动涡盘接触而造成奥德姆环磨损。 此外，可以在奥德姆环的一部分上形成减重部分或耐磨涂层，从而抑制或防止由于奥德姆环的重量增加涡旋压缩机的振动噪声增加。

公开(公告)号：US12286971B2

公开(公告)日：2025-04-29

申请号：US18612080

申请日：2024-03-21

Applicant: LG ELECTRONICS INC.

Inventor： Minho Lee ,  Sungyong Ahn ,  Junghoon Park ,  Seheon Choi

IPC: F04C18/02 ,  F04C29/02

Abstract: A scroll compressor is provided that may include a casing, a main frame, a rotational shaft, an orbiting scroll, a fixed scroll, and an oil supply guide. A second oil supply guide of the oil supply guide may be disposed in at least one of the orbiting scroll or the fixed scroll and extend along a thrust bearing surface between the orbiting scroll and the fixed scroll to provide communication between a first oil supply guide and a compression chamber having a lower pressure than an oil storage space. This may produce a great pressure difference between ends of an oil supply passage including the first oil supply guide and the second oil supply guide, and allow smooth oil supply using differential pressure to the thrust bearing surface between the fixed scroll and the orbiting scroll.

公开(公告)号：US20250129779A1

公开(公告)日：2025-04-24

申请号：US18882955

申请日：2024-09-12

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Yunhi Lee ,  Seheon Choi

IPC: F04C18/356 ,  F04C29/12 ,  F25B31/02

Abstract: Disclosed are a rotary compressor and a refrigeration cycle device having the same. The rotary compressor and the refrigeration cycle device having the same may include a casing, a main bearing, a sub bearing, a cylinder, a roller, a vane, and an injection passage, and the injection passage may be disposed in at least one selected from the main bearing, the sub bearing, and the cylinder to communicate with a corresponding compression chamber after a compression start angle of the corresponding compression chamber. Thus, a maximum injection section may be secured, while a refrigerant being injected may be suppressed from being leaked toward a suction port.

公开(公告)号：US12258964B2

公开(公告)日：2025-03-25

申请号：US18066615

申请日：2022-12-15

Applicant: LG Electronics Inc.

Inventor： Byungkil Yoo ,  Jungsun Choi ,  Seheon Choi

IPC: F04C18/02 ,  F04C29/00

Abstract: A scroll compressor is disclosed. The scroll compressor includes a rotating shaft coupling portion axially extending from a central portion of an orbiting end plate to radially overlap an orbiting wrap, such that an eccentric portion of a rotating shaft is coupled thereto, and a portion of the orbiting wrap may extend from an end surface of the rotating shaft coupling portion facing a fixed end plate. With the configuration, a distance between bearing reaction force and gas reaction force acting on the orbiting scroll can be reduced, to stabilize a behavior of the orbiting scroll and thus reduce back pressure, thereby decreasing friction loss between scrolls. Simultaneously, compression chambers can be formed even in a central portion of the orbiting scroll, which can increase a compression ratio and improve volumetric efficiency.

公开(公告)号：US11480194B2

公开(公告)日：2022-10-25

申请号：US17055289

申请日：2019-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Jun Chul Oh ,  Kyungmin Kim ,  Seheon Choi

IPC: F04D29/053 ,  F04D29/051 ,  F04D29/58 ,  F04D17/10 ,  F04D29/054

Abstract: A turbo compressor comprises a rotary shaft including a rotor; a first impeller coupled to one side of the rotary shaft, a thrust bearing runner coupled between the first impeller and the rotary shaft, an impeller sleeve compressed and coupled between the first impeller and the thrust bearing runner, a second impeller coupled to the other side of the rotary shaft, and a tie rod passing through the first impeller and a thrust bearing and fastened to the rotary shaft.

公开(公告)号：US11428224B2

公开(公告)日：2022-08-30

申请号：US16528716

申请日：2019-08-01

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seoungmin Kang ,  Seheon Choi

IPC: F04C18/344 ,  F04C29/02 ,  F01C21/08

Abstract: A vane rotary compressor has a cylinder. A main bearing and a sub bearing are coupled to the cylinder forming a compression space. The main and sub bearing each have a back pressure pocket on a surface facing the cylinder. The main bearing and the sub bearing radially support a rotation shaft. A roller coupled to the shaft is disposed within the compression space. The roller has circumferentially spaced vane slots, each vane slot extending from an open end on an outer circumferential surface of the roller to a back pressure chamber disposed within the roller at an opposite end of each vane slot. A plurality of vanes slide within the vane slots and divide the compression space into compression chambers. At least one of the back pressure chambers in the vane slots fluidly communicates with at least one of the back pressure pockets in the main and sub bearings.

公开(公告)号：US11300122B2

公开(公告)日：2022-04-12

申请号：US16598098

申请日：2019-10-10

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seungmin Kang ,  Seheon Choi

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C2/44 ,  F04C18/356 ,  F04C23/00

Abstract: A vane rotary compressor includes: a cylinder forming a compression space having an inlet port and an outlet port, a roller having an outer circumferential surface of one side thereof almost coming into contact with an inner circumferential surface of the cylinder to form a contact point, and a plurality of vanes slidably inserted into the roller to protrude toward the inner circumferential surface of the cylinder so as to divide the compression space into a plurality of compression chambers, wherein ion at least one of the outer circumferential surface of the roller and the inner circumferential surface of the cylinder is provided a surface contact portion between the outer circumferential surface of the cylinder and the inner circumferential surface of the roller is constantly maintained in a preset section including the contact point in a circumferential direction.