公开(公告)号：US20220025886A1

公开(公告)日：2022-01-27

申请号：US17499313

申请日：2021-10-12

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Seoungmin KANG ,  Jinung SHIN

IPC: F04C23/00 ,  F04C18/344

Abstract: A hermetic compressor includes a casing, a cylinder in the casing, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located at an eccentric position with respect to an inner surface of the cylinder and configured to vary a volume of the compression space, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner surface of the cylinder to divide the compression space into compression chambers. An inlet port in communication with the compression space is defined in the first bearing, and an intermediate plate is located between the cylinder and the inlet port and defines a suction passage connected to the inlet port, where a peripheral length of an inner peripheral surface of the suction passage is greater than a peripheral length of an outer peripheral surface of the suction passage.

公开(公告)号：US20210301662A1

公开(公告)日：2021-09-30

申请号：US17099943

申请日：2020-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Jinung Shin ,  Kiyoul Noh

IPC: F01C1/324 ,  F01C21/02 ,  F01C21/08 ,  F01C21/18

Abstract: A rotary compressor may include a rotational shaft; first and second bearings that support the rotational shaft in a radial direction; a cylinder disposed between the first bearing and the second bearing, and forming a compression space; a rotor forming a contact point, disposed in the compression space, and having a predetermined gap with the cylinder, and coupled to the rotational shaft to compress refrigerant according to rotation; and at least one vane slidably inserted into the rotor, and contacting an inner circumferential surface of the cylinder to separate the compression space into a plurality of regions. Each of the at least one vane may include an upper pin that extends upward, and a lower pin that extends downward, a surface of the first bearing may include a first rail groove into which the upper pin may be inserted, and a first step disposed adjacent to the first rail groove, and a surface of the second bearing may include a second rail groove into which the lower pin may be inserted, and a second step disposed adjacent to the second rail groove.

公开(公告)号：US20200158111A1

公开(公告)日：2020-05-21

申请号：US16541260

申请日：2019-08-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Kiyoul NOH ,  Seokhwan MOON

IPC: F04C18/344

Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.

公开(公告)号：US20180223845A1

公开(公告)日：2018-08-09

申请号：US15506448

申请日：2015-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Yunhi LEE ,  Byeongchul LEE

IPC: F04C18/356 ,  F04C29/02

Abstract: Disclosed is a compressor. A lubrication surface, which has the same curvature as an inner circumferential surface curvature of a cylinder and which has a predetermined circumference length, is formed on an outer circumferential surface of a roller contacting an inner circumferential surface of the cylinder. With such a configuration, since the outer circumferential surface of the roller contacting the inner circumferential surface of the cylinder come in surface-contact with each other, an oil film is formed between the roller and the cylinder with a wide area. This can reduce a frictional loss.

公开(公告)号：US20230047035A1

公开(公告)日：2023-02-16

申请号：US17967094

申请日：2022-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan MOON ,  Joonhong PARK

IPC: F04C18/344 ,  F04C15/06

Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.

公开(公告)号：US20220034318A1

公开(公告)日：2022-02-03

申请号：US17502098

申请日：2021-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Joonhong PARK ,  Kiyoul NOH ,  Seokhwan MOON

IPC: F04C18/344 ,  F04C29/02

Abstract: A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.

公开(公告)号：US20210301823A1

公开(公告)日：2021-09-30

申请号：US17179708

申请日：2021-02-19

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seseok SEOL ,  Kiyoul NOH

IPC: F04C18/356 ,  F04C29/12

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：US20200271114A1

公开(公告)日：2020-08-27

申请号：US16734755

申请日：2020-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Kiyoul NOH ,  Seokhwan MOON ,  Jinung SHIN

IPC: F04C18/344 ,  F04C29/12

Abstract: A vane rotary compressor may include a cylinder provided with at least one outlet port; a plurality of bearings coupled to both sides of the cylinder in an axial direction of the cylinder to form a compression space together with the cylinder; a rotational shaft radially supported by the plurality of bearings; a roller rotatably coupled to the rotational shaft and provided with a plurality of vane slots formed in a circumferential direction, each having a first end opened to an outer circumferential surface thereof; a plurality of vanes slidably inserted into the plurality of vane slots of the roller, respectively, and protruding toward an inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, respectively; a discharge valve coupled to the cylinder to open and close the at least one outlet port; and at least one bypass hole formed in at least one of the plurality of bearings or formed in the cylinder to bypass a portion of refrigerant compressed in the compression chamber.

公开(公告)号：US20190211681A1

公开(公告)日：2019-07-11

申请号：US16241160

申请日：2019-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seoung-Min KANG ,  Kiyoul NOH

IPC: F01C21/08 ,  F25B1/04

CPC classification number: F01C21/0863 ,  F04C18/3446

Abstract: A backpressure rotary compressor may include at least one vane, at least one vane slot configured to accommodate the at least one vane and provided with a pocket portion and a slide portion, and a backpressure passage provided with a backpressure inlet disposed in front of the at least one vane slot and a backpressure outlet formed in the pocket portion. The backpressure passage may perform a role of allowing a compression chamber and the pocket portion to communicate with each other. According to the backpressure passage rotary compressor, proper pressure may be supplied to an inner end of the vane, thereby reducing a mechanical loss caused by pressure occurring in a close contact portion between an outer end of the at least one vane and an inner circumferential surface of the cylinder, and achieving high efficiency in relation to driving a device.

公开(公告)号：US20180223844A1

公开(公告)日：2018-08-09

申请号：US15876304

申请日：2018-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F04C18/344 ,  F04C29/12 ,  F04C27/00

Abstract: A hermetic compressor is provided that may include a vane that is inserted into a roller, rotates with the roller, and is pushed out toward an inner circumference of a cylinder by rotation of the roller to divide the compression chamber into a plurality of spaces. The vane may include a body having a sealing surface that contacts the inner circumference of the cylinder and inserted into the roller; and a guide that extends from an axial end of the body in a direction crossing a direction the vane slides out, and that is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder.