公开(公告)号：US20220333598A1

公开(公告)日：2022-10-20

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 ,  F04C23/00

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：US20190316587A1

公开(公告)日：2019-10-17

申请号：US16381064

申请日：2019-04-11

Applicant: LG ELECTRONICS INC.

Inventor： Sanghun SEONG ,  Honghee PARK ,  Bumjune SEO ,  Jinyong JANG

IPC: F04C29/02 ,  F04C18/02

Abstract: A motor-operated compressor includes a casing having an inner space including a suction space and a discharge space. A first scroll is disposed in the inner space of the casing. A second scroll is configured to orbit in engagement with the first scroll to form a pair of two compression chambers between the first scroll and the second scroll. A rotary shaft is coupled to the second scroll and configured to transfer a rotational force of a driving motor to the second scroll. An intermediate pressure space is formed on one side of the second scroll and in fluid communication with the discharge space. Oil entering the intermediate pressure space from the discharge space forms back pressure supporting the second scroll toward the first scroll, and a portion of the oil flows into the suction space.

公开(公告)号：US20170167485A1

公开(公告)日：2017-06-15

申请号：US15372762

申请日：2016-12-08

Applicant: LG ELECTRONICS INC.

Inventor： Jaesang LEE ,  Sanghun SEONG ,  Byeongchul LEE

IPC: F04C18/02 ,  F04C29/12

Abstract: A scroll compressor is provided that may include a communication hole that penetrates from a side surface of a non-orbiting scroll adjacent to a discharge side to a thrust bearing surface between the non-orbiting scroll and an orbiting scroll, and a decompression member having a radial sectional area smaller than a radial sectional area of the communication hole and inserted into the communication hole. A refrigerant discharged to a discharge space may be introduced to a suction space through the passage between the communication hole and the decompression member, thereby preventing a high vacuum state of a compression chamber, and a refrigerant passing through the communication hole may be decompressed during a normal operation to restrain leakage of the refrigerant to the thrust bearing surface between the non-orbiting scroll and the orbiting scroll, thus increasing compression efficiency.

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).

公开(公告)号：US20230193902A1

公开(公告)日：2023-06-22

申请号：US17987529

申请日：2022-11-15

Applicant: LG Electronics Inc.

Inventor： Jaesang LEE ,  Sanghun SEONG ,  Honghee PARK ,  Sooho JANG

IPC: F04C18/02 ,  F04C29/12

CPC classification number: F04C18/0215 ,  F04C29/12

Abstract: In a scroll compressor, a discharge chamber is provided in an inner space of a back pressure chamber inner wall, a discharge port is provided inside the discharge chamber, a bypass hole is provided around the discharge port, and a communicating recess portion allowing the discharge chamber to communicate with the bypass hole is provided on an inner circumferential surface of the back pressure chamber inner wall forming the discharge chamber. Through this, the bypass hole may be easily configured in addition to the discharge port, thereby increasing an operation range of the compressor and suppressing overcompression.

公开(公告)号：US20180363651A1

公开(公告)日：2018-12-20

申请号：US15996883

申请日：2018-06-04

Applicant: LG Electronics Inc.

Inventor： Sanghun SEONG ,  Byungkil YOO ,  Nayoung JEON

IPC: F04C28/18 ,  F04C18/02 ,  F04C28/26

Abstract: A scroll compressor includes a casing accommodating a rotary shaft and a driving unit, a first scroll making an orbiting movement by the rotary shaft, a second scroll engaged with the first scroll to form a compression chamber and having a bypass hole bypassing a refrigerant sucked into the compression chamber to an internal space of the casing, and a back-pressure chamber assembly pressing the second scroll toward the first scroll, wherein the back-pressure chamber assembly includes: a back-pressure space, a first valve unit allowing the bypass hole and the internal space of the casing to selectively communicate with each other, and a second valve unit opened and closed to selectively supply the refrigerant of the back-pressure space to the first valve unit to operate the first valve unit, and positioned to be fixed to the casing.

公开(公告)号：US20230167819A1

公开(公告)日：2023-06-01

申请号：US17987446

申请日：2022-11-15

Applicant: LG Electronics Inc.

Inventor： Jinyong JANG ,  Sanghun SEONG ,  Honghee PARK ,  Byeonghun YU

IPC: F04C18/02 ,  F04C29/12

CPC classification number: F04C18/0215 ,  F04C29/12

Abstract: A scroll compressor includes a discharge guide disposed in a high-pressure part to guide refrigerant discharged from a compression part to a refrigerant discharge pipe, and the discharge guide may extend by a preset height from an inner circumferential surface of a casing constituting the high-pressure part toward one side surface of a high and low pressure separation plate. This can guide discharge refrigerant discharged to the high-pressure part to quickly flow to the refrigerant discharge pipe before being spread in an entire space of the high-pressure part, thereby preventing the high and low pressure separation plate from being overheated by discharge refrigerant of high temperature. This can result in preventing suction refrigerant of a low-pressure part from being heated by heat of discharge refrigerant transferred through the high and low pressure separation plate, thereby reducing a specific volume of the suction refrigerant and improving compressor efficiency.

公开(公告)号：US20200224659A1

公开(公告)日：2020-07-16

申请号：US16735811

申请日：2020-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Byungkil YOO ,  Kyoungjun PARK ,  Yongkyu CHOI ,  Sanghun SEONG

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

Abstract: A compressor includes a main housing having an internal space, a motor provided in the main housing and comprising a stator and a rotor, a shaft coupled to the rotor, and a shaft mounting portion provided at one end of the shaft and having a smaller diameter than the shaft. A sub-ball bearing is coupled to the shaft mounting portion, and a fixing latch is coupled to the shaft mounting portion. The fixing latch includes a latching portion configured to constrain the sub-ball bearing in the shaft mounting portion.

公开(公告)号：US20190277289A1

公开(公告)日：2019-09-12

申请号：US16207380

申请日：2018-12-03

Applicant: LG ELECTRONICS INC.

Inventor： Byungkil YOO ,  Sanghun SEONG ,  Jinyong JANG ,  Dongwoo MIN ,  Kyoungjun PARK ,  Junghoon PARK ,  Byeongchul LEE

IPC: F04C29/00 ,  F01C17/06 ,  F04C18/02

Abstract: A scroll compressor is disclosed. The scroll compressor includes a first scroll and a second scroll engaged with the first scroll and configured to perform an orbiting movement. The second scroll forms a compression chamber between the first scroll and the second scroll. The scroll compressor includes a frame positioned opposite the first scroll with the second scroll interposed therebetween. The scroll compressor also includes an oldham ring that has an annular ring portion and a key portion protruding from the ring portion. The key portion is slidably coupled to a key groove provided in the frame or in the second scroll to allow the second scroll to perform an orbiting movement with respect to the first scroll. The scroll compressor also include a reinforcing member coupled to the key portion. The reinforcing member is positioned between the key groove and the key portion.

公开(公告)号：US20190211679A1

公开(公告)日：2019-07-11

申请号：US16225058

申请日：2018-12-19

Applicant: LG ELECTRONICS INC.

Inventor： Kitae JANG ,  Sanghun SEONG ,  Jinyong JANG ,  Jongtae HER

IPC: F01C17/06 ,  F04C29/00 ,  F04C18/02

CPC classification number: F01C17/066 ,  F04C18/0215 ,  F04C29/0057 ,  F04C2240/801 ,  F04C2240/805 ,  F05B2230/60 ,  F05B2260/95

Abstract: A scroll compressor may include a casing configured to receive a rotation shaft and a driving unit; a compression unit provided with a frame configured to rotatably support the rotation shaft, a first scroll fixed to the casing, and a second scroll configured to be connected to the rotation shaft and engaged with the first scroll. An oldham ring is provided with a plurality of key portions to guide the second scroll to perform an orbiting movement, wherein at least one of the frame, the first scroll, and the second scroll includes a respective key groove formed to receive a respective key portion; and a respective wear-resistant member mounted to cover an inner surface of the respective key groove in contact with the respective key portion.