公开(公告)号：US11773851B2

公开(公告)日：2023-10-03

申请号：US17721610

申请日：2022-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Byeonghun Yu ,  Sanghun Seong ,  Jinyong Jang ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C29/12 ,  F04C23/00 ,  F04C29/04

CPC classification number: F04C18/0261 ,  F04C29/12 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/045 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/50 ,  F04C2240/806 ,  F05C2251/046

Abstract: A scroll compressor is disclosed. The scroll compressor may include a suction guide between a refrigerant suction pipe and a high/low pressure separation plate, and the suction guide may be fastened to a non-orbiting scroll or inserted into a suction guide protrusion that extends from the non-orbiting scroll. Accordingly, suction refrigerant may be partially suctioned into a compression chamber by the suction guide in advance before moving to the high/low pressure separation plate, so as to be prevented from coming into contact with the high/low pressure separation plate, while the suction refrigerant may also partially flow toward a drive motor without being suctioned directly into the compression chamber, so as to cool the drive motor, whereby efficiency of the compressor may be improved and an operation range of the compressor may be expanded.

公开(公告)号：US20220364560A1

公开(公告)日：2022-11-17

申请号：US17874485

申请日：2022-07-27

Applicant: LG Electronics Inc.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C28/28

Abstract: A scroll compressor is provided that may include an orbiting scroll having an orbiting wrap, and which performs an orbiting motion; and a fixed scroll having a fixed wrap to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the orbiting wrap. In a state in which the orbiting scroll and the fixed scroll are concentric with each other, when a distance between the orbiting wrap and the fixed wrap is defined as an orbiting radius, there exists an offset section having an interval larger than the orbiting radius, between a side surface of the orbiting wrap and a side surface of the fixed wrap which faces the orbiting wrap. With such a configuration, even if the fixed scroll or the orbiting scroll is transformed due to thermal expansion, interference between the fixed wrap and the orbiting wrap at a portion having a large transformation amount may be prevented. This may prevent a frictional loss or abrasion between the fixed wrap and the orbiting wrap. Further, this may restrict or minimize a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction chamber, resulting in enhanced compression efficiency.

公开(公告)号：US11448215B2

公开(公告)日：2022-09-20

申请号：US17120573

申请日：2020-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Seokhwan Moon ,  Seoungmin Kang ,  Byeongchul Lee

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C15/00 ,  F04C18/344 ,  F01C21/08 ,  F04C27/00 ,  F04C29/12 ,  F04C23/00

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.

公开(公告)号：US11359629B2

公开(公告)日：2022-06-14

申请号：US17013064

申请日：2020-09-04

Applicant: LG ELECTRONICS INC.

Inventor： Honghee Park ,  Junghoon Park ,  Kyoungjun Park ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C27/00 ,  F04C23/02

Abstract: A motor operated compressor according to the present embodiment may include a main housing; an electric motor unit; a rotation shaft; a fixed scroll coupled to an inner space of the main housing; an orbiting scroll provided that performs an orbiting movement with respect to the fixed scroll; a rear housing provided on an opposite side to the fixed scroll with the orbiting scroll therebetween and coupled to the main housing, and disposed with a first space to communicate with a discharge side of the compression chamber; and a first sealing portion provided to surround the first space to form a second space on an outer edge of the first space, wherein the second space includes a first region and a second region in fluid communication with each other. Accordingly, a horizontal motor operated compressor in which a frame and a fixed scroll are integrated may be provided.

公开(公告)号：USRE49074E1

公开(公告)日：2022-05-17

申请号：US16850331

申请日：2020-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Taekyoung Kim ,  Cheolhwan Kim ,  Byeongchul Lee

IPC: F04C29/02 ,  F04C23/00 ,  F04C18/02 ,  F01C21/10

Abstract: A scroll compressor is provided that may include a casing; an electric motor drive having a stator fixed within the casing, and a rotor rotatably provided within the stator; a rotational shaft coupled to the rotor to rotate along with the rotor; a compression device disposed at a lower portion of the electric motor drive to receive a rotational force from the rotational shaft and compress a refrigerant; and an oil storage space located within the casing. A plurality of oil discharge paths to allow oil accumulated at an upper portion thereof to be discharged to the oil storage space may be formed on an outer circumferential surface of the compression device to be separated from each other, and an overall cross-sectional area of the plurality of oil discharge paths may be about 2 to about 12% of an inner diameter cross-sectional area of the casing brought into contact with or separated from an outer circumferential surface of the compression device in the compression device.

公开(公告)号：US11168689B2

公开(公告)日：2021-11-09

申请号：US16429324

申请日：2019-06-03

Applicant: LG ELECTRONICS INC.

Inventor： Jehoon Kim ,  Bumjune Seo ,  Byeongchul Lee ,  Soonyong Choi

IPC: F04C18/02 ,  F04C29/12

Abstract: A compressor includes a first scroll and a second scroll engaged with the first scroll for performing an orbiting motion relative to the first scroll to form a compression chamber along with the first scroll. A stator is disposed at one side of the second scroll and includes a stator core. A rotor is rotatably disposed inside the stator core, and includes a rotor core. A rotary shaft has one end portion eccentrically coupled to the second scroll and the other end portion coupled to the rotor core. The rotor core is formed with at least one space portion axially recessed into the rotor core.

公开(公告)号：US10914296B2

公开(公告)日：2021-02-09

申请号：US16528734

申请日：2019-08-01

Applicant: LG ELECTRONICS INC.

Inventor： Jongtae Her ,  Dongwoo Min ,  Byeongchul Lee ,  Kitae Jang

IPC: F04C29/00 ,  F04C18/02 ,  F04B17/03 ,  F04C23/02

Abstract: A motor operated compressor includes a drive motor and a rotary shaft coupled to the rotor. A first scroll disposed on one side of the drive motor is eccentrically coupled to and orbitally moved by the rotary shaft. A second scroll faces the first scroll and is coupled to the first scroll to form a compression chamber. A hollow portion is formed inside the rotary shaft along an axial direction, and an eccentric portion having a rotary shaft side discharge hole extends from the rotary shaft center to a rotary shaft outer circumferential surface. The first scroll includes a rotary shaft coupling portion surrounding an outer circumferential surface of the eccentric portion. The rotary shaft coupling portion is provided with a first scroll side discharge hole formed at a position periodically facing the rotary shaft side discharge hole to discharge compressed fluid to the rotary shaft side discharge hole.

公开(公告)号：US10816000B2

公开(公告)日：2020-10-27

申请号：US15830290

申请日：2017-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Cheol Hwan Kim ,  Kangwook Lee ,  Byeongchul Lee ,  Yong Kyu Choi

IPC: F01C1/02 ,  F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C2/00 ,  F04C29/02 ,  F04C18/02 ,  F04C29/00 ,  F04C23/00

Abstract: A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion. The scroll compressor may include a casing in which oil is stored in an oil storage chamber formed at a lower portion of the casing, a drive motor provided in an inner space of the casing, a rotary shaft coupled to the drive motor and including an oil supply path configured to guide the oil stored in the oil storage chamber and at least one oil hole that passes from the oil supply path to an outer circumferential surface of the rotary shall a main frame coupled to the rotary shaft and provided under the drive motor, a fixed scroll coupled to the rotary shaft and provided under the main frame, and an orbiting scroll provided between the main frame and the fixed scroll, into which the rotary shaft is inserted and to which the rotary shaft is eccentrically coupled, the orbiting scroll performing an orbiting movement to form a compression chamber with the fixed scroll. The oil guided upward through the oil supply path may be discharged through the at least one oil hole and supplied to the outer circumferential surface of the rotary shaft.

公开(公告)号：US10718331B2

公开(公告)日：2020-07-21

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 ,  F04C23/00

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：US10704548B2

公开(公告)日：2020-07-07

申请号：US15706921

申请日：2017-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Yoonsung Choi ,  Byung-Kil Yoo ,  Jinho Kim ,  Byeongchul Lee

IPC: F04C18/02 ,  F04C29/02 ,  F04C27/00

Abstract: A co-rotating scroll compressor is provided in which pressure differences between inner and outer portions of a suction chamber are maintained, back pressures are applied to rear surfaces of end plates of a drive scroll and a driven scroll in directions in which the two scrolls are moved toward each other to prevent compression leakage of a fluid, and a lubricant oil is easily supplied to the two scrolls using the back pressures. The co-rotating scroll compressor may include pressure seals between the rear surfaces of the end plates of the drive scroll and the driven scroll and an inner wall of the suction chamber such that the two scrolls are pressed in directions to be moved toward each other by the back pressures, and the oil is supplied to rotary supports and close contact portions of the two scrolls using the back pressures.