公开(公告)号：US20220260077A1

公开(公告)日：2022-08-18

申请号：US17566000

申请日：2021-12-30

Applicant: LG Electronics Inc.

Inventor： Nayoung JEON ,  Sangbaek PARK ,  Cheolhwan KIM

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

Abstract: A scroll compressor includes a flow path guide disposed between a motor unit and a compression unit to separate a refrigerant flow path and an oil flow path. A guide discharge hole communicating with a discharge passage of the compression unit is formed axially through the flow path guide and a guide passage communicating with the guide discharge hole is annularly defined, such that a discharge guide protrusion surrounding the guide discharge hole extends toward the motor unit. Accordingly, inner and outer spaces of the flow path guide can communicate with each other while the refrigerant flow path and the oil flow path are separated, which results in securing a space of an oil recovery passage to allow quick oil recovery and simplifying a structure of the flow path guide to reduce manufacturing costs.

公开(公告)号：US20190353163A1

公开(公告)日：2019-11-21

申请号：US16414110

申请日：2019-05-16

Applicant: LG Electronics Inc.

Inventor： Nayoung JEON ,  Taekyoung KIM ,  Cheolhwan KIM

IPC: F04C27/00 ,  F04C18/02

Abstract: Disclosed is a scroll compressor with a refrigerant discharge flow passage and an oil recovery flow passage separated from each other to improve efficiency and reliability of the compressor. The scroll compressor includes a flow passage separation unit configured to separate an intermediate space between a drive portion and a compression portion into an inner space communicating with the refrigerant flow passage and an outer space communicating with the oil flow passage to separate the refrigerant discharge path from the oil recovery path. Accordingly, the present invention may prevent the oil from being mixed with the discharged refrigerant, thereby reducing an oil discharge amount.

公开(公告)号：US20210277892A1

公开(公告)日：2021-09-09

申请号：US17185392

申请日：2021-02-25

Applicant: LG Electronics Inc.

Inventor： Taekyoung KIM ,  Kangwook LEE ,  Nayoung JEON

IPC: F04C2/02 ,  F04C29/06 ,  F04C29/04 ,  F04C29/02

Abstract: A compressor includes a casing that defines an oil storage space and an opening that discharges refrigerant to an outside of the casing, a rotatable shaft disposed in the casing, a driver coupled to an inner circumferential surface of the casing and configured to rotate the rotatable shaft, a compression assembly coupled to the rotatable shaft and configured to compress and discharge the refrigerant to an inside of the casing, a muffler coupled to the compression assembly and configured to guide the refrigerant discharged from the compression assembly toward the opening, where the muffler being is configured to exchange heat with the refrigerant, and a heat radiating member that is coupled to the muffler and extends to the oil storage space and contacts the oil in the oil storage space. The muffler is configured to exchange heat with the oil through the heat radiating member.

公开(公告)号：US20200256600A1

公开(公告)日：2020-08-13

申请号：US16788966

申请日：2020-02-12

Applicant: LG Electronics Inc.

Inventor： Nayoung JEON ,  Taekyoung KIM ,  Cheolhwan KIM

IPC: F25B43/02 ,  F04C29/02

Abstract: A compressor include a casing, a drive unit including a stator and a rotor accommodated in the stator, a rotation shaft coupled to the rotor and configured to be rotated by the rotor, a compression unit that is coupled to the rotation shaft, that is lubricated with the oil, and that is configured to compress and discharge the refrigerant, and an oil-separator that is disposed between the discharge part and the drive unit and that is configured to separate the oil from the refrigerant and guide the refrigerant to the discharge part. The oil-separator includes a centrifugal separator configured to rotate together with the rotation shaft and configured to generate a centrifugal force to separate the oil from the refrigerant, and a coupler coupled to the rotor or the rotation shaft and configured to rotate the centrifugal separator based on rotation of the rotating shaft.

公开(公告)号：US20190309753A1

公开(公告)日：2019-10-10

申请号：US16378653

申请日：2019-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Nayoung JEON ,  Taekyoung KIM ,  Cheolhwan KIM

IPC: F04C29/12 ,  F04C18/02

Abstract: A scroll compressor may include a second scroll provided between a frame and a first scroll and forming compression chambers with the first scroll while orbiting relative to the first scroll; a discharge port provided in the first scroll to allow refrigerant compressed in the compression chamber to a lower side of the first scroll; a discharge passage formed through the first scroll and the frame to guide the refrigerant discharged through the discharge port to an upper side of the frame; and a discharge cover coupled to the first scroll and having a space to accommodate end portions of the discharge port and the discharge passage to guide the refrigerant discharged through the discharge port to the discharge passage. A volume of a discharge space defined in the space by the first scroll may be 4.5 or more, obtained by dividing a volume of the discharge space by a total volume of an initial compression chamber among the compression chambers.

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：US20230374989A1

公开(公告)日：2023-11-23

申请号：US18162215

申请日：2023-01-31

Applicant: LG Electronics Inc.

Inventor： Sangbaek PARK ,  Nayoung JEON ,  Cheolhwan KIM

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

CPC classification number: F04C29/026 ,  F04C18/0215 ,  F04C23/008

Abstract: The present disclosure relates to is a compressor. The compressor may be provided with a communication hole between an inlet and an outlet of a refrigerant discharge pipe coupled through an upper surface of a casing, the communication hole penetrating between an outer circumferential surface and an inner circumferential surface of the refrigerant discharge pipe. Thus, during oil sealing through the refrigerant discharge pipe, a flux path area of a driving motor may be ensured, and a number of winding wires and/or a coil diameter of a stator coil may be ensured. Thus, efficiency of the driving motor may be maintained and backflow or overflow of oil through the refrigerant discharge pipe may be suppressed. In addition, during operation of the compressor, oil may be suppressed from being excessively leaked through the refrigerant discharge pipe without having to include a separate oil separator inside or inside the casing.

公开(公告)号：US20190383288A1

公开(公告)日：2019-12-19

申请号：US16444369

申请日：2019-06-18

Applicant: LG Electronics Inc.

Inventor： Nayoung JEON ,  Taekyoung KIM ,  Cheolhwan KIM

IPC: F04C27/00 ,  F04C18/02

Abstract: A compressor is disclosed. The compressor includes a case having an oil reservoir space for storing oil in a lower portion of the case and a refrigerant discharge pipe for discharging a compressed refrigerant in an upper portion of the case, a drive motor provided in the case, a rotary shaft rotatably coupled to the drive motor, a compression unit coupled to the rotary shaft to compress the refrigerant, and a discharge cover hermetically coupled to a lower end of the compression unit and configured to guide an oil-containing refrigerant compressed by the compression unit toward the refrigerant discharge pipe, wherein a guide is provided between the compression unit and the discharge cover and configured to guide an oil-containing refrigerant discharged from the compression unit toward the refrigerant discharge pipe.

公开(公告)号：US20180080445A1

公开(公告)日：2018-03-22

申请号：US15706911

申请日：2017-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Jaesang LEE ,  Nayoung JEON ,  Byeongchul LEE

IPC: F04C18/02

CPC classification number: F04C18/023 ,  F04C2240/30 ,  F04C2240/50

Abstract: A co-rotating scroll compressor is provided in which a bearing configured to support a scroll is displaced by a torque repulsive force, which is applied to the bearing due to compression repulsion of a compressed fluid, the torque repulsive force is converted into a sealing force of compression pockets, which are defined by wraps of co-rotating scrolls such that the sealing force of the compression pockets is increased, and in which a bearing housing is rotatably installed in a housing accommodation hole, a rotational center of a second scroll is positioned at a position eccentric from a rotational center of a bearing housing, the bearing housing is rotated by the torque repulsive force applied to the second scroll, some of the torque repulsive force is converted into the sealing force against a sealing disturbing force, and thus, the wrap of the second scroll is pressed against the wrap of the first scroll by the sealing force.