公开(公告)号：US09897143B2

公开(公告)日：2018-02-20

申请号：US14679077

申请日：2015-04-06

Applicant: LG ELECTRONICS INC.

Inventor： Junchul Oh ,  Sungyong Ahn ,  Eunji Hwang ,  Byeongchul Lee ,  Seheon Choi

IPC: F03C2/00 ,  F03C4/00 ,  F04C18/02 ,  F04C23/00 ,  F04C29/00 ,  F16C33/20 ,  F04C29/02 ,  F01C21/02 ,  F04C29/06

CPC classification number: F16C33/201 ,  F01C21/02 ,  F04C18/0215 ,  F04C29/0057 ,  F04C29/0071 ,  F04C29/02 ,  F04C29/06 ,  F04C2230/60 ,  F04C2240/56 ,  F05C2225/12 ,  F05C2251/00 ,  F05C2251/14 ,  F16C2360/42

Abstract: A bush bearing and a scroll compressor including a bush bearing are provided. A boss of an orbiting scroll may be inserted into and coupled to a boss coupling groove of a rotational shaft, and thus, an outer circumferential surface of a bush bearing may wholly contact an inner circumferential surface of the boss coupling groove, thereby decreasing wear of the bush bearing. Further, friction loss in the bush bearing may be reduced, and thus, compression efficiency and reliability may be enhanced, noise may be reduced, and material costs may be reduced. Furthermore, despite that the bush bearing is formed in a ring shape and press-fitted to the boss, as the bush bearing may be formed of a plastic material having an ether ketone bonding in consideration of a thermal expansion rate, an elongation, and a press-fit range, the bush bearing may be effectively prevented from being detached from the boss, thereby enhancing a reliability of a compressor.

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：US10774646B2

公开(公告)日：2020-09-15

申请号：US15942832

申请日：2018-04-02

Applicant: LG ELECTRONICS INC.

Inventor： Yunhi Lee ,  Byeonghun Yu ,  Byeongchul Lee

IPC: F01C21/04 ,  F02B53/00 ,  F01M1/02 ,  F01C17/02 ,  F01M1/06 ,  F02B55/14 ,  F01C1/22 ,  F01C13/04 ,  F02B55/02 ,  F04C2/10

Abstract: A rotary engine having a crankshaft, a housing provided with lobe accommodating portions arranged to surround the crankshaft, and combustion chambers communicating with the lobe accommodating portions, a rotor rotatable eccentrically with respect to the crankshaft and provided with lobes continuously accommodated in the lobe accommodating portions, a housing cover provided with a bearing portion through which the crankshaft is inserted so as to be rotatably supported, and a lubricating unit to supply oil to the bearing portion, wherein the lubricating unit includes an oil pan to accommodate oil therein, an oil pump to pump up oil filled in the oil pan, and an oil supply passage having both ends located in the oil pump and the bearing portion, respectively, is provided. This structure may allow direct and effective lubrication of the bearing portion, and can employ a journal bearing.

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：US10550696B2

公开(公告)日：2020-02-04

申请号：US15506300

申请日：2015-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Gukhyun Cho ,  Yunhi Lee ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C15/00 ,  F01C21/08 ,  F04C18/324 ,  F04C18/356 ,  F04C23/00 ,  F04C29/00

Abstract: A compressor including a hinge recess formed at a rolling piston and a hinge protrusion formed at a vane to be inserted into the hinge recess. A diameter of the hinge protrusion is greater than an interval between both ends of an opening of the hinge recess. A bearing surface, which comes in contact with an inner circumferential surface of the hinge recess, of an outer circumferential surface of the hinge protrusion, has a circumferential surface below 90° at both sides, respectively, based on a central line in a lengthwise direction of the vane. This structure may facilitate cutting and grinding of the bearing surface so as to reduce machining costs, and also improve a machining degree and thus stabilize behaviors of the rolling piston and the vane so as to enhance compression efficiency.

公开(公告)号：US20180372103A1

公开(公告)日：2018-12-27

申请号：US15830161

申请日：2017-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Yong Kyu CHOI ,  Nara Han ,  Cheol Hwan Kim ,  Byeongchul Lee

IPC: F04C29/02 ,  F04C18/02

CPC classification number: F04C29/023 ,  F04C18/0215 ,  F04C23/008 ,  F04C27/005 ,  F04C2210/26 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/603

Abstract: A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.

公开(公告)号：US20160146206A1

公开(公告)日：2016-05-26

申请号：US14939327

申请日：2015-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Yoonsung Choi ,  Byungkil Yoo ,  Jinho Kim ,  Byeongchul Lee

IPC: F04C18/02

CPC classification number: F04C18/0215 ,  F04C18/0269 ,  F04C23/008

Abstract: A scroll compressor is provided that may include a casing including a rotational shaft, a first scroll rotated by rotation of the rotational shaft, the first scroll including a first head plate and a first wrap that extends from the first head plate in a first direction, and a second scroll that defines a plurality of compression chambers together with the first scroll, the second scroll including a second head plate and a second wrap that extends from the second head plate in a second direction. Each of the first and second wraps spirally may extend from an outer end toward an inner start end, and the first wrap may have a thickness greater than a thickness of the second wrap.

Abstract translation: 提供一种涡旋压缩机，其可以包括：壳体，其包括旋转轴，通过旋转轴的旋转而旋转的第一涡旋盘，所述第一涡卷包括第一头板和从第一头板沿第一方向延伸的第一涡卷; 以及第二涡卷，其与所述第一涡旋件一起限定多个压缩室，所述第二涡卷包括第二头板和从所述第二头板沿第二方向延伸的第二涡卷。 第一和第二卷绕件中的每一个螺旋地可以从外端朝向内起始端延伸，并且第一包装可以具有大于第二包装的厚度的厚度。

公开(公告)号：US20150192121A1

公开(公告)日：2015-07-09

申请号：US14590229

申请日：2015-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Sanghun SUNG ,  Jaesang Lee ,  Kitae Jang ,  Inho Won ,  Byeongchul Lee

IPC: F04C2/02

CPC classification number: F04C18/0215 ,  F04C18/0261 ,  F04C23/008 ,  F04C29/126

Abstract: A scroll compressor is provided that may include a casing; a discharge cover fixed to an inner space of the casing, that divides the inner space of the case into a suction space and a discharge space; a main frame in the casing, and spaced from the discharge cover; an orbital scroll that performs an orbital motion on the main frame; a non-orbital scroll coupled to the main frame so as to be movable up and down with respect to the orbital scroll, that forms a suction chamber, an intermediate pressure chamber, and a discharge chamber together with the orbital scroll; and a back pressure plate provided between the discharge cover and the non-orbital scroll, that forms a back pressure chamber that communicates with the intermediate pressure chamber. With such a configuration, a bypass valve may be easily installed, and application of an overload minimized.

Abstract translation: 提供一种可包括壳体的涡旋压缩机; 排出盖，其固定到所述壳体的内部空间，其将所述壳体的内部空间分成吸入空间和排出空间; 壳体中的主框架，并与排出罩间隔开; 在主框架上执行轨道运动的轨道滚动体; 非轨道涡卷，其联接到主框架，以便能够相对于轨道涡旋件上下移动，与轨道涡旋件一起形成吸入室，中间压力室和排出室; 以及设置在排出盖和非轨道涡旋件之间的背压板，形成与中间压力室连通的背压室。 通过这样的构造，可以容易地安装旁通阀，并且使过载的应用最小化。