公开(公告)号：US12228130B2

公开(公告)日：2025-02-18

申请号：US18610425

申请日：2024-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Joonhong Park ,  Kiyoul Noh

IPC: F04C18/356

Abstract: A rotary compressor provided that may include a casing, a cylinder, a roller, and at least one vane slidably inserted into the roller, and the roller may have at least one bypass passage through which spaces on both sides of a contact point based on a rotational direction of the roller communicate with each other. Through the at least one bypass passage, residual refrigerant remaining in a compression space even after a discharge stroke may be bypassed to a suction chamber, thereby minimizing the refrigerant remaining in the compression space after the discharge stroke. Also, loss due to overcompression in a residual space may be suppressed or prevented while reducing suction loss due to the introduction of overcompressed high-pressure refrigerant by the bypassing the refrigerant in the residual space toward a suction side in advance.

公开(公告)号：US11578724B2

公开(公告)日：2023-02-14

申请号：US17179708

申请日：2021-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seseok Seol ,  Kiyoul Noh

IPC: F04C18/348 ,  F04C18/356 ,  F04C18/32 ,  F01C21/08 ,  F01C1/32 ,  F04C29/12 ,  F01C21/02 ,  F01C21/18 ,  F01C1/324

Abstract: A rotary compressor is provided that may include a rotational shaft, first and second bearings configured to support the rotational shaft in a radial direction, a cylinder disposed between the first and second bearings to form a compression space, a rotor disposed in the compression space to form a contact point forming a predetermined gap with the cylinder and coupled to the rotational shaft to compress a refrigerant as the rotor rotates, and at least one vane slidably inserted into the rotor, the at least one each vane coming into contact with an inner peripheral surface of the cylinder to separate the compression space into a plurality of regions. The at least one vane may include a pin that extends upward or downward, and a lower surface of the first bearing or an upper surface of the second bearing may include a rail groove into which the pin may be inserted.

公开(公告)号：US09429156B2

公开(公告)日：2016-08-30

申请号：US14141713

申请日：2013-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Bumdong Sa ,  Byeongchul Lee

IPC: F04C23/00 ,  F04C15/00 ,  F01C21/08 ,  F04C18/04 ,  F04C2/34

CPC classification number: F04C15/0065 ,  F01C21/08 ,  F04C2/34 ,  F04C15/0088 ,  F04C18/045 ,  F04C23/001 ,  F04C23/008

Abstract: A compressor is provided that may include a cylinder including an outer cylinder portion, an inner cylinder portion, and a vane portion connected between the outer cylinder portion and the inner cylinder portion, which is fixed to a casing. A rolling piston may be slidably coupled to the vane portion to form an outer compression space and an inner compression space while making a turning movement between the outer cylinder portion and the inner cylinder portion. Through this, a weight of a rotating body may be reduced to obtain a low power loss with respect to the same cooling power and a small bearing area, thereby reducing refrigerant leakage as well as easily changing a capacity of a cylinder in an expanded manner. In addition, refrigerant may be discharged in opposite directions to each other in each compression space, thereby reducing vibration noise of the compressor.

Abstract translation: 提供一种压缩机，该压缩机可以包括一个气缸，它包括一个外筒部分，一个内筒部分和一个连接在外筒部分和内筒部分之间的叶片部分，该叶片部分固定在壳体上。 滚动活塞可以可滑动地联接到叶片部分，以在外筒部分和内筒部分之间形成转动运动的同时形成外部压缩空间和内部压缩空间。 由此，可以减小旋转体的重量，以相对于相同的冷却功率和小的轴承面积而获得低的功率损失，从而减少制冷剂泄漏以及容易地以扩大的方式改变气缸的容量。 此外，制冷剂可以在每个压缩空间中彼此相反的方向排出，从而减少压缩机的振动噪声。

公开(公告)号：US11732712B2

公开(公告)日：2023-08-22

申请号：US17562175

申请日：2021-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Jinung Shin ,  Joonhong Park

IPC: F04C2/344 ,  F04C15/06 ,  F04C18/356 ,  F04C18/344 ,  F04C29/12

CPC classification number: F04C2/344 ,  F04C15/06 ,  F04C2240/30 ,  F04C2240/50

Abstract: A rotary compressor may include a case, a cylinder, a roller, a vane, a main bearing and a sub bearing, and a discharge passage defined in the main bearing or the sub bearing to discharge refrigerant compressed in a compression space. The discharge passage may include at least one discharge hole formed through the main bearing or the sub bearing, and at least one discharge guide groove having a first end that communicates with the at least one discharge hole and a second end that extends from the at least one discharge hole toward a contact point between the cylinder and the roller and is recessed from one surface of the main bearing or the sub bearing forming the compression space. Accordingly, an amount of refrigerant remaining in the compression space even after a discharge stroke may be reduced.

公开(公告)号：US11448072B2

公开(公告)日：2022-09-20

申请号：US16551101

申请日：2019-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Sedong Lee ,  Bumdong Sa ,  Seseok Seol

IPC: F01C21/08 ,  F04C18/352 ,  F25B1/04

Abstract: A rotary compressor: a casing; a plurality of bearings provided in an internal space of the casing; at least one cylinder provided between the bearings to form a compression space and has a vane slot; a rolling piston accommodated in the compression space to perform an orbiting movement; at least one vane that is slidably inserted into the vane slot of the cylinder, the at least one vane configured to separate the compression space into a suction chamber and a discharge chamber; a discharge cover including a noise reducing space to accommodate refrigerant discharged from the compression space; and a bypass flow path that allows the noise reducing space of the discharge cover to be connected between a sidewall of the vane slot and a side of the vane facing the sidewall.

公开(公告)号：US12123414B2

公开(公告)日：2024-10-22

申请号：US18283057

申请日：2022-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong Park ,  Seseok Seol ,  Seoungmin Kang

IPC: F04C18/356 ,  F01C21/08 ,  F04C29/02 ,  F25B31/00 ,  F25B31/02

CPC classification number: F04C29/028 ,  F01C21/0863 ,  F04C18/356 ,  F04C29/025 ,  F25B31/002 ,  F25B31/026 ,  F04C2240/50 ,  F04C2240/603 ,  F05B2210/14

Abstract: A rotary compressor is provided that may include at least one vane that is slidably inserted into at least one vane slot provided in a roller or a cylinder so as to separate a compression space into a plurality of compression chambers. The at least one vane has an at least one oil supply groove formed in at least one of axial side surfaces, respectively, facing a main bearing and a sub bearing. The at least one oil supply groove may be longer in a longitudinal direction of the at least one vane than in a widthwise direction of the at least one vane. With this structure, it is possible to suppress friction loss and wear on a friction surface by supplying oil to the friction surface in contact with the at least one vane.

公开(公告)号：US11060521B2

公开(公告)日：2021-07-13

申请号：US16544170

申请日：2019-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Bumdong Sa

IPC: F04C18/324 ,  F04C2/356 ,  F04C29/02 ,  F01C21/08 ,  F04C18/356

Abstract: A rotary compressor includes a cylinder, a drive unit, a piston, a vane, and an oil passage. The cylinder includes a suction chamber for suctioning fluid and a compression chamber for compressing fluid. The drive unit rotates a drive shaft by connecting to the cylinder. The piston oscillates in the cylinder by connecting to the drive shaft. The vane extends between the cylinder and the piston so as to separate the suction chamber from the compression chamber, and some parts of the length of the vane are inserted into a slide groove formed in the cylinder. One end of the vane is connected to the coupling groove formed in the piston. The oil passage is disposed between one end of the vane and the rolling piston so as to receive oil therethrough.

公开(公告)号：US20210180597A1

公开(公告)日：2021-06-17

申请号：US17113230

申请日：2020-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong SA ,  Joonhong Park ,  Seseok Seol

IPC: F04C18/344 ,  F04C18/356

Abstract: A vane-type compressor is provided. The vane-type compressor may include a cylindrical cylinder having opposite open ends along an axial direction, an inner circumferential surface of the cylinder being eccentric from an outer circumferential surface of the cylinder, a main bearing and a sub bearing, respectively, positioned at the open ends of the cylinder, a rotor coupled to a shaft supported by the main bearing and the sub bearing and installed eccentric from the inner circumferential surface of the cylinder, and a plurality of vanes coupled to the rotor to rotate along with the rotor, the plurality of vanes dividing the inner circumferential surface of the cylinder into a plurality of spaces including a suction chamber and a compression chamber when the rotor rotates. An elastic member may be installed at a point at which a minimum gap is maintained between the inner circumferential surface of the cylinder and the rotor so that a portion of the elastic member protrudes inward of the inner circumferential surface of the cylinder. An end of a discharge dimple formed in the inner circumferential surface of the cylinder extends up to the point.

公开(公告)号：US12253083B2

公开(公告)日：2025-03-18

申请号：US17926210

申请日：2021-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong Sa ,  Seseok Seol ,  Seokhwan Moon

IPC: F04C18/344

Abstract: A rotary compressor is provided that may include a cylinder; a chamber eccentrically formed in the cylinder and accommodating a predetermined working fluid; a rotor rotatably received in the chamber and arranged so as to be concentric to the cylinder; first and second bearings disposed on upper and lower portions, respectively, of the cylinder so as to close the chamber, and which support a drive shaft of the rotor; a plurality of vanes movably installed on the rotor in a radial direction thereof, and protruding from the rotor up to an inner circumferential surface of the cylinder so as to divide the chamber into a plurality of compression spaces; first and second guide grooves which, in order to accommodate a portion of the vanes, are formed on respective surfaces, facing the chamber, of the first and second bearings so as to be concentric to the chamber, and guide the plurality of vanes while the rotor is rotating so that the plurality of vanes continuously protrude up to the inner circumferential surface of the cylinder; and an auxiliary bearing which is provided in at least one of the first guide groove or the second guide groove and rotating with the plurality of vanes.

公开(公告)号：US11891995B2

公开(公告)日：2024-02-06

申请号：US17869037

申请日：2022-07-20

Applicant: LG ELECTRONICS INC.

Inventor： Seseok Seol ,  Seoungmin Kang ,  Joonhong Park

IPC: F04C18/344 ,  F04C29/12 ,  F04C23/00 ,  F01C21/08

CPC classification number: F04C18/3445 ,  F04C18/3442 ,  F04C29/124 ,  F01C21/0809 ,  F04C18/3441 ,  F04C23/008 ,  F04C2240/40 ,  F04C2240/50 ,  F04C2240/603

Abstract: A rotary compressor may include a cylinder having an inner peripheral surface that defines a compression space, and provided with a suction port configured to communicate with the compression space and through which refrigerant is suctioned into the compression space; a roller rotatably provided in the compression space of the cylinder, and having a plurality of vane slots that provides a back pressure at one side thereinside and provided at a predetermined interval along an outer peripheral surface of the roller; and a plurality of vanes slidably inserted into the vane slots, respectively, and configured to rotate together with the roller, front end surfaces of which come into contact with the cylinder due to the back pressure to partition the compression space into a plurality of compression chambers. High-pressure refrigerant may be accommodated between one of the vanes and the cylinder.