公开(公告)号：US11136981B2

公开(公告)日：2021-10-05

申请号：US16330855

申请日：2017-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Sungyong Ahn ,  Jinho Kim ,  Junghoon Park ,  Junchul Oh ,  Byeongchul Lee ,  Jaeha Lee ,  Seheon Choi

IPC: F04C29/02 ,  F04C18/02

Abstract: A scroll compressor may include a rotational shaft, the rotational shaft including a first frame support having an inner circumferential surface, into which a boss of a first scroll is inserted, and an outer circumferential surface that forms an outer surface of the rotational shaft; and at least one guide hole that extends from the inner circumferential surface to the outer circumferential surface.

公开(公告)号：US10227983B2

公开(公告)日：2019-03-12

申请号：US15244543

申请日：2016-08-23

Applicant: LG ELECTRONICS INC.

Inventor： Jaeha Lee ,  Junchul Oh ,  Seheon Choi ,  Byeongchul Lee

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

Abstract: A scroll compressor is provided that may include a casing; a drive motor; a fixed scroll that forms a compression space by being coupled to the orbiting scroll; and a discharge cover provided at an inner space of the casing, the discharge cover having a space that communicates with the compression space and separated from the inner space of the casing, and having one or more discharge hole on a side surface thereof, the one or more discharge hole providing communication between an inside and an outside of the space. With such a configuration, vibration noise of the scroll compressor may be more reduced in comparison with a case in which an oil separator is provided outside of the casing. Further, as an area of the one or more discharge hole and a volume of the space are optimized, efficiency of the scroll compressor may be enhanced.

公开(公告)号：US11713756B2

公开(公告)日：2023-08-01

申请号：US17342168

申请日：2021-06-08

Applicant: LG Electronics Inc.

Inventor： Taekyoung Kim ,  Sungyong Ahn ,  Jaeha Lee

IPC: F04C18/02 ,  F04C2/02 ,  F04C15/00 ,  F04C29/12 ,  F04C23/00 ,  F04C29/02

CPC classification number: F04C2/025 ,  F04C15/0088 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/02 ,  F04C29/12 ,  F04C2240/30

Abstract: A scroll compressor includes oil in an oil storage space that is brought into direct contact with and stirred with a discharge refrigerant. The scroll compressor includes a fixed scroll, an orbiting scroll coupled to one side of the fixed scroll, and a discharge cover coupled to another side of the fixed scroll and provided with a muffler hole communicating with a refrigerant discharge space and the oil storage space.

公开(公告)号：US11092154B2

公开(公告)日：2021-08-17

申请号：US16290099

申请日：2019-03-01

Applicant: LG ELECTRONICS INC.

Inventor： Yoonsung Choi ,  Jinho Kim ,  Jaeha Lee

IPC: F04C18/02 ,  F04C29/02 ,  F01C21/02

Abstract: A scroll compressor includes a first scroll including a fixed wrap, a second scroll comprising an orbiting wrap, and a boss portion, a rotating shaft including an eccentric portion inserted into the boss portion of the second scroll to transfer a rotational force, a frame having a shaft hole, a first bearing provided between the shaft hole of the frame and an outer circumferential surface of the rotating shaft, and a second bearing provided between an inner circumferential surface of the boss portion and an outer circumferential surface of the eccentric portion of the rotating shaft, wherein a differential pressure space portion is formed between the first bearing and the second bearing in a radial direction, and has a radial cross section wider than a radial gap between an inner circumferential surface of the second bearing and the outer circumferential surface of the eccentric portion.

公开(公告)号：US12018682B2

公开(公告)日：2024-06-25

申请号：US17707382

申请日：2022-03-29

Applicant: LG Electronics Inc.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Jaeha Lee

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

CPC classification number: F04C18/0207 ,  F04C23/005 ,  F04C23/008 ,  F04C29/12 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/60

Abstract: A scroll compressor of an air conditioner includes a refrigerant discharge tube through which refrigerant discharged to an inner space of a casing is discharged into a refrigeration cycle. The scroll compressor further including a venturi tube disposed adjacent to the refrigerant discharge tube in the inner space of the casing, and a liquid refrigerant discharge tube having a first end connected to the venturi tube and a second end opposite to the first end and communicating with the inner space of the casing at a lower side of the refrigerant discharge tube, where liquid refrigerant can be suppressed from excessively stagnating in the inner space of the casing.

公开(公告)号：US11867175B2

公开(公告)日：2024-01-09

申请号：US17993417

申请日：2022-11-23

Applicant: LG Electronics Inc.

Inventor： Taekyoung Kim ,  Sungyong Ahn ,  Junghoon Park ,  Jaeha Lee

IPC: F04C29/02 ,  F04C18/02 ,  F04C29/12

CPC classification number: F04C18/0215 ,  F04C18/0261 ,  F04C29/12 ,  F04C2210/206

Abstract: A scroll compressor includes a casing having an oil storage space, a fixed scroll disposed inside the casing, an orbiting scroll disposed on one side of the fixed scroll and performing an orbiting motion relative to the fixed scroll so as to form a compression chamber, a discharge cover coupled to another side opposite to the one side of the fixed scroll and having a cover bottom surface, and an oil feeder coupled to the cover bottom surface to face a direction opposite to the fixed scroll, to communicate with the oil storage space. The cover bottom surface is disposed at an inner side of an inner circumference of the oil feeder and defines a discharge hole to communicate with the inner side of the oil feeder.

公开(公告)号：US12078175B2

公开(公告)日：2024-09-03

申请号：US17919934

申请日：2021-03-08

Applicant: LG Electronics Inc.

Inventor： Jaeha Lee ,  Sungyong Ahn ,  Howon Lee

IPC: F04C29/12 ,  F04C18/02 ,  F04C23/00 ,  F04C29/02 ,  F04C29/04 ,  F04C29/06

CPC classification number: F04C29/124 ,  F04C18/0215 ,  F04C29/023 ,  F04C29/065

Abstract: A compressor comprises a discharge valve which is provided so as to be coupled to a fixed scroll and open/close a discharge hole. The discharge valve includes a coupling portion which is coupled to one surface of the fixed scroll, the surface facing a muffler, and a head portion extending from the coupling portion and opening/closing the discharge hole. The head portion may be provided with a communicating hole for allowing the discharge hole and the muffler to be in communication with each other. Accordingly, a backflow of a compressed refrigerant is prevented during the operation of the compressor, and thus over-compression of the refrigerant can be prevented. Also, when the compressor stops operating, only a certain amount of the discharged refrigerant is allowed to flow backward to prevent a reverse rotation of an orbiting scroll and a decrease in the oil level of the oil stored in a case.

公开(公告)号：US11815093B2

公开(公告)日：2023-11-14

申请号：US17506348

申请日：2021-10-20

Applicant: LG Electronics Inc.

Inventor： Jaeha Lee ,  Yongkyu Choi ,  Minho Lee

IPC: F04C18/02 ,  F04C29/02 ,  F04C29/06 ,  F04C23/00

CPC classification number: F04C18/0215 ,  F04C23/008 ,  F04C29/026 ,  F04C29/028 ,  F04C29/065 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2250/20 ,  F04C2250/30

Abstract: A scroll compressor includes a motor portion fixed in an inner space of a casing, a compression portion fixed to the inner space of the casing at one side of the motor portion in an axial direction, a rotation shaft to transmit a driving force from the motor portion to the compression portion, and a flow path guide provided in a discharge space between the motor portion and the compression portion and provided with a guide outlet communicating with the discharge space and opened in a direction toward the rotation shaft. Therefore, most of refrigerant discharged to the discharge space through the flow path guide is moved toward an air gap to enhance an oil separation effect, and thus a normal operation point of the air conditioner can be accelerated.

公开(公告)号：US20220316474A1

公开(公告)日：2022-10-06

申请号：US17707382

申请日：2022-03-29

Applicant: LG Electronics Inc.

Inventor： Yongkyu Choi ,  Kangwook Lee ,  Jaeha Lee

IPC: F04C18/02

Abstract: A scroll compressor of an air conditioner includes a refrigerant discharge tube through which refrigerant discharged to an inner space of a casing is discharged into a refrigeration cycle, a venturi tube disposed adjacent to the refrigerant discharge tube in the inner space of the casing, and a liquid refrigerant discharge tube having a first end connected to the venturi tube and a second end opposite to the first end and communicating with the inner space of the casing at a lower side of the refrigerant discharge tube, where liquid refrigerant can be suppressed from excessively stagnating in the inner space of the casing.

公开(公告)号：US11268510B2

公开(公告)日：2022-03-08

申请号：US16526421

申请日：2019-07-30

Applicant: LG Electronics Inc.

Inventor： Jaeha Lee ,  Jinho Kim ,  Sungyong Ahn ,  Yoonsung Choi

IPC: F04C15/06 ,  F04C29/12 ,  F04C18/02 ,  F04B39/10 ,  F04C23/00

Abstract: A fluid compressor is provided. The fluid compressor includes a case including an inlet configured to introduce fluid to be compressed, a compression unit including a compression chamber configured to compress the fluid introduced into the case, and a discharge port configured to discharge the compressed fluid to the outside of the compression chamber, a motor configured to drive the compression unit, and a valve configured to open and close the discharge port. The valve includes a fastening portion coupled to the compression unit to be spaced a first distance from the discharge port.