公开(公告)号：EP3595150A3

公开(公告)日：2020-04-22

申请号：EP19185706.9

申请日：2019-07-11

Applicant: LG ELECTRONICS INC.

Inventor： KIM, Kiman ,  KIM, Sanghyeon ,  KIM, Taekyoung ,  CHO, Yongsoo

IPC: H02M1/084 ,  H02M1/32 ,  H03K17/14 ,  H03K17/08 ,  H02M1/08 ,  H02M1/44 ,  H02M7/00 ,  H02M7/5387 ,  H02M7/5395 ,  H02M1/00

Abstract: The present invention relates to a power converting device, and more particularly, to a power converting device capable of protecting a compressor from overheat, a compressor including the same, and a control method thereof. The device includes an inverter for generating an alternate current for driving the motor using power supplied from a power supply, the inverter including a plurality of switching elements; a driver for driving the plurality of switching elements; a variable resistance unit disposed between and electrically coupled to the driver and a gate of each of the switching elements, wherein the variable resistance unit has a resistance value inversely proportional to a temperature of the inverter; and a controller configured for transferring a drive signal to the driver.

公开(公告)号：EP3595150A2

公开(公告)日：2020-01-15

申请号：EP19185706.9

申请日：2019-07-11

Applicant: LG ELECTRONICS INC.

Inventor： KIM, Kiman ,  KIM, Sanghyeon ,  KIM, Taekyoung ,  CHO, Yongsoo

IPC: H02M1/084 ,  H02M1/32 ,  H03K17/14 ,  H03K17/08

Abstract: The present invention relates to a power converting device, and more particularly, to a power converting device capable of protecting a compressor from overheat, a compressor including the same, and a control method thereof. The device includes an inverter for generating an alternate current for driving the motor using power supplied from a power supply, the inverter including a plurality of switching elements; a driver for driving the plurality of switching elements; a variable resistance unit disposed between and electrically coupled to the driver and a gate of each of the switching elements, wherein the variable resistance unit has a resistance value inversely proportional to a temperature of the inverter; and a controller configured for transferring a drive signal to the driver.

公开(公告)号：EP3584445A1

公开(公告)日：2019-12-25

申请号：EP19180799.9

申请日：2019-06-18

Applicant: LG Electronics Inc.

Inventor： JEON, Nayoung ,  KIM, Taekyoung ,  KIM, Cheolhwan

IPC: F04C23/00 ,  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：EP3450762A1

公开(公告)日：2019-03-06

申请号：EP17789743.6

申请日：2017-01-09

Applicant: LG Electronics Inc.

Inventor： KIM, Taekyoung ,  LEE, Kangwook ,  KIM, Cheolhwan ,  LEE, Byeongchul

IPC: F04C18/02 ,  F04C29/02 ,  B01D17/02

Abstract: A scroll compressor includes: a casing which contains oil at a lower space thereof; a driving motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotation shaft coupled to a rotor of the driving motor, and having an oil supply passage to guide the oil contained in the casing to an upper side; a frame provided below the driving motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber by being engaged with the fixed wrap, and having a rotation shaft coupling portion for coupling the rotation shaft thereto in a penetrating manner; and an oil collection unit including an oil separator provided at the upper space of the casing, and including an oil guiding portion having one end communicated with the oil separator and another end communicated with a lower space of the fixed scroll.

公开(公告)号：EP3401543A1

公开(公告)日：2018-11-14

申请号：EP18171087.2

申请日：2018-05-07

Applicant: LG Electronics Inc.

Inventor： KIM, Cheolhwan ,  LEE, Kangwook ,  KIM, Taekyoung ,  LEE, Byeongchul

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

CPC classification number: F04C29/026 ,  B01D45/14 ,  B01D50/002 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/0085 ,  F04C29/045 ,  F04C29/12 ,  F04C2210/26 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/806

Abstract: Provided is a scroll compressor including: a casing, an internal space in which is sealed; a drive motor that is configured with a stator and a rotator which rotates within the stator, and that has an internal flow passage and an external flow passage; a rotation shaft that is connected to the rotator; a compression unit that includes a first scroll, and a second scroll which is engaged with the first scroll to form a compression chamber, with which the rotation shaft is eccentrically combined; a discharge pipe that communicates with an upper space of the internal space; an oil separation member that is provided in the upper space; and a guidance member that is provided between an upper end of the drive motor and a lower end of the discharge pipe and guides the refrigerant with which the oil is mixed, to the oil separation member.