公开(公告)号：US20180266419A1

公开(公告)日：2018-09-20

申请号：US15926254

申请日：2018-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seoungmin KANG ,  Jinung SHIN

IPC: F04C23/00 ,  F04C18/10 ,  F04C18/356 ,  F04C29/02

CPC classification number: F04C23/008 ,  F04C15/06 ,  F04C18/10 ,  F04C18/3562 ,  F04C18/3564 ,  F04C29/023 ,  F04C2210/26 ,  F04C2240/30

Abstract: A hermetic compressor includes a casing, a cylinder coupled to an inside of the casing, the cylinder defining a compression space, a first bearing and a second bearing defining a compression space together with the cylinder, a roller located 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 circumferential surface of the cylinder when the roller rotates to divide the compression space into a plurality of compression chambers. An inlet port in communication with the compression space is defined in the first bearing or the second bearing, and a refrigerant suction pipe penetrating through the casing is inserted to be coupled to the inlet port.

公开(公告)号：US20170306961A1

公开(公告)日：2017-10-26

申请号：US15510401

申请日：2015-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Bumdong SA ,  Byeongchul LEE

IPC: F04C29/00 ,  F04C18/356

CPC classification number: F04C29/0021 ,  F04C18/356 ,  F04C18/3566 ,  F04C23/008 ,  F04C29/005 ,  F04C2250/20 ,  F04C2270/03

Abstract: Disclosed is a compressor having a torque load reducing unit for moving a center of weight to which a gas force is applied. As the torque load reducing unit is formed at an oval-shaped roller, a distance between a rotation center of the roller and an operation point to which a gas force is applied becomes short. This can reduce a torque load to the roller, and can enhance compression efficiency.

公开(公告)号：US20230228267A1

公开(公告)日：2023-07-20

申请号：US17993605

申请日：2022-11-23

Applicant: LG ELECTRONICS INC.

Inventor： Gunyoung PARK ,  Seokhwan MOON ,  Kitae JANG ,  Jongtae HER

IPC: F04C18/02 ,  F04C29/00

CPC classification number: F04C18/0215 ,  F04C29/0042

Abstract: A scroll compressor is disclosed. The scroll compressor may include an anti-rotation mechanism provided with an anti-rotation pin and an anti-rotation ring between an orbiting scroll and a scroll support member facing the orbiting scroll, and an axial thickness of the ring body portion constituting the anti-rotation ring may be larger than an axial depth of a ring insertion groove in which the anti-rotation ring is inserted. This can allow the orbiting scroll and a member facing the same to be spaced physically apart without a separate member, to secure a gap for oil to flow, such that the oil can be smoothly supplied between the orbiting scroll and the member, thereby suppressing seizure or/and friction loss between the orbiting scroll and the member.

公开(公告)号：US20180372102A1

公开(公告)日：2018-12-27

申请号：US16019891

申请日：2018-06-27

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Kiyoul NOH ,  Jinung SHIN

IPC: F04C18/344 ,  F04C23/00 ,  F25B31/02 ,  F25B1/10

Abstract: The present disclosure relates to a two-stage rotary compressor in which refrigerant inhaled into a compression space of a cylinder is compressed sequentially in two axially connected compression chambers and then is discharged. A rotary compressor according to an embodiment of the present disclosure includes a first compression unit and a second compression unit arranged on and along a single rotation shaft. Middle-pressure refrigerant discharged from the first compression unit flows into the second compression unit. A maximum gas force of the first compression unit and a maximum gas force of the second compression unit counteract with each other, thereby reducing a reaction force acting on a rotation shaft. According to the present disclosure, a single rotary compressor is configured to separately achieve the stroke volume increase and the compression period increase.

公开(公告)号：US20180340534A1

公开(公告)日：2018-11-29

申请号：US15986114

申请日：2018-05-22

Applicant: LG Electronics Inc.

Inventor： Jinung SHIN ,  Seokhwan MOON ,  Kiyoul NOH

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

Abstract: A rotary compressor includes a cylinder that is coupled to an inner space of a casing and that defines a compression space, a first bearing and a second bearing located at upper and lower sides of the cylinder, a roller disposed eccentrically with respect to an inner circumferential surface of the cylinder to vary a volume of the compression space based on rotation, and a vane inserted into the roller to rotate together with the roller, and drawn out toward the inner circumferential surface of the cylinder during the rotation of the roller to partition the compression space into a plurality of compression chambers. A suction passage communicating with the compression space is defined in the first bearing or the second bearing, and a suction port communicating between the suction passage and the compression space is defined on a side surface of the cylinder.

公开(公告)号：US20240151228A1

公开(公告)日：2024-05-09

申请号：US18381323

申请日：2023-10-18

Applicant: LG Electronics Inc.

Inventor： Seokhwan MOON ,  Sanghun SEONG ,  Jinyong JANG ,  Sooho JANG

IPC: F04C18/02 ,  F04C29/12

CPC classification number: F04C18/0215 ,  F04C29/12 ,  F04C2240/30

Abstract: A scroll compressor is provided that may have a first sealing portion defined between an inner surface of an orbiting wrap and an outer surface of a non-orbiting wrap facing the inner surface of the orbiting wrap in a radial direction, and a second sealing portion defined between an inner surface of the non-orbiting wrap and an outer surface of the orbiting wrap facing the inner surface of the non-orbiting wrap in the radial direction. Further, sealing surfaces where the wraps facing each other are in surface-contact with each other may be formed on at least one of the first sealing portion or the second sealing portion. This may enlarge a sealing area between side surfaces of the wraps facing each other to suppress or prevent leakage of refrigerant suctioned in a compression chamber, thereby improving indicated efficiency and volumetric efficiency.

公开(公告)号：US20230184250A1

公开(公告)日：2023-06-15

申请号：US17926210

申请日：2021-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Bumdong SA ,  Seseok SEOL ,  Seokhwan MOON

IPC: F04C18/344

CPC classification number: F04C18/344 ,  F04C2240/20 ,  F04C2240/50 ,  F04C2210/12

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：US20200224656A1

公开(公告)日：2020-07-16

申请号：US16598098

申请日：2019-10-10

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan MOON ,  Seungmin KANG ,  Seheon CHOI

IPC: F04C2/44 ,  F04C18/356

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.

公开(公告)号：US20180372104A1

公开(公告)日：2018-12-27

申请号：US16010687

申请日：2018-06-18

Applicant: LG Electronics Inc.

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

IPC: F04C29/12 ,  F04C18/344

Abstract: The present disclosure provides a compressor including a rounded portion surrounding a discharge port, including a cylinder without an oil-blocking structure for ease of shaping the rounded portion, and including a valve-recess cover coupled to the cylinder. At least one valve-recess is defined in an outer face portion of the cylinder. A discharge valve assembly is fixedly received in the valve-recess, wherein the discharge valve assembly is configured for opening and closing the discharge port. The valve-recess is defined between the outer face, primary and secondary side blocks. The rounded portion surrounds the discharge port, to reduce a contact area between the discharge port and the valve assembly.

公开(公告)号：US20240151227A1

公开(公告)日：2024-05-09

申请号：US18378203

申请日：2023-10-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinyong JANG ,  Sanghun SEONG ,  Seokhwan MOON ,  Sooho JANG

IPC: F04C18/02 ,  F04C23/00 ,  F04C28/24 ,  F04C29/00

CPC classification number: F04C18/0215 ,  F04C18/0292 ,  F04C23/008 ,  F04C28/24 ,  F04C29/0028 ,  F04C29/0035

Abstract: A scroll compressor is provided that may include a first back pressure unit that allows a refrigerant to flow from a first compression chamber to a back pressure chamber while blocking a reverse flow of the refrigerant, and a second back pressure unit that allows the refrigerant to flow from the back pressure chamber to a second compression chamber while blocking a reverse flow of the refrigerant. The first back pressure unit and the second back pressure unit may be spaced apart from each other in a direction that the compression chambers are formed. This may reduce pressure pulsation in the back pressure chamber. Also, leakage between compression chambers may be suppressed and simultaneously friction loss may be reduced by appropriately adjusting the pressure in the back pressure chamber. This is especially advantageous for enhancing compression efficiency under low load operating conditions (or in a low pressure ratio operation).