公开(公告)号：US20160377086A1

公开(公告)日：2016-12-29

申请号：US15052954

申请日：2016-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Namsoo LEE ,  Jinhee JEONG ,  Kiwook LEE ,  Soyoon KIM

IPC: F04D27/00 ,  F04D29/28 ,  F04D29/053 ,  F04D17/12 ,  F04D29/058

CPC classification number: F04D27/001 ,  F04D17/12 ,  F04D29/058 ,  F05D2270/821 ,  F25B1/04 ,  F25B2339/047

Abstract: A compressor and a chiller system including a compressor are provided. The compressor may include one or more impellers that draws a refrigerant in an axial direction and compresses the refrigerant in a radial direction, a rotating shaft that rotates the one or more impellers, and at least one displacement sensor that detects a displacement of the rotating shaft. The displacement sensor may include a flexible circuit board and coils provided on both sides of the flexible circuit board. The flexible circuit board may include a plurality of boards which may be connected to each other by one or more connectors.

Abstract translation: 提供了包括压缩机的压缩机和冷却器系统。 压缩机可以包括一个或多个在轴向上拉制冷剂并沿径向压缩制冷剂的叶轮，使一个或多个叶轮旋转的旋转轴以及检测旋转轴的位移的至少一个位移传感器 。 位移传感器可以包括柔性电路板和设置在柔性电路板两侧的线圈。 柔性电路板可以包括可以通过一个或多个连接器彼此连接的多个板。

公开(公告)号：US20180058460A1

公开(公告)日：2018-03-01

申请号：US15684557

申请日：2017-08-23

Applicant: LG ELECTRONICS INC.

Inventor： Namsoo LEE ,  Solji RYU ,  Kiwook LEE ,  Seongmin JANG

IPC: F04D27/00 ,  F25B31/02 ,  F04D29/058 ,  F04D29/053 ,  G01B7/14

CPC classification number: F04D27/001 ,  F04D29/053 ,  F04D29/058 ,  F04D29/286 ,  F25B1/053 ,  F25B31/026 ,  F25B39/00 ,  F25B49/025 ,  F25B2339/0242 ,  F25B2339/047 ,  F25B2400/077 ,  G01B7/14

Abstract: The present invention provides a compressor that includes: one or more impellers that axially suck and centrifugally compress a refrigerant; a rotary shaft that is connected with the impeller and a motor for rotating the impeller; a plurality of magnetic bearings that supports the rotary shaft in the air so that the rotary shaft can rotate; a gap sensor that senses the distance from the rotary shaft; and a controller that determines abnormal wire connection of the magnetic bearings on the basis of information from the gap sensor. The controller can sense movement of the rotary shaft through the gap sensor while controlling the amount of current supplied to any one of the magnetic bearings and can determine whether there is abnormal wire connection on the basis of the information.

公开(公告)号：US20210116155A1

公开(公告)日：2021-04-22

申请号：US17253213

申请日：2019-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Kiwook LEE ,  Namsoo LEE ,  Chanmyung PARK

IPC: F25B31/00 ,  F28F3/12

Abstract: A refrigerator according to an embodiment of the present invention includes: a compressor configured to compress a refrigerant; and an inverter module configured to control the compressor, wherein the inverter module includes: a heatsink provided with a cooling passage through which coolant passes; a coolant inlet connected to the heatsink to communicate with an inlet of the cooling passage; a coolant outlet connected to the heatsink to communicate with an outlet of the cooling passage; at least one insulated gate bipolar transistor (IGBT) disposed on a top surface of the heatsink; and at least one diode disposed to be spaced apart from the IGBT on the top surface of the heatsink, wherein the cooling passage includes: an IGBT cooling passage that is closer to the coolant inlet among the coolant inlet and the coolant outlet; and a diode cooling passage that is closer to the coolant outlet among the coolant inlet and the coolant outlet, wherein the diode cooling passage is disposed behind the IGBT cooling passage in a flow direction of the coolant.

公开(公告)号：US20180023938A1

公开(公告)日：2018-01-25

申请号：US15615064

申请日：2017-06-06

Applicant: LG ELECTRONICS INC. ,  THE INDUSTRY & ACADEMIC COOPERATION IN CHUNGNAM NATIONAL UNIVERSITY

Inventor： Namsoo LEE ,  Myounggyu NOH ,  Soyoon KIM ,  Seongmin JANG ,  Jinhee JEONG ,  Seongki BAEK ,  Sunggyu NAM

IPC: G01B5/14 ,  F16C32/04 ,  G01M13/04

CPC classification number: G01B5/14 ,  F16C32/0446 ,  F16C32/0451 ,  F16C2362/52 ,  G01B5/146 ,  G01M13/04

Abstract: A method of measuring a center error between bearings includes disposing both sides of a rotation shaft on inner circumferential surfaces of a magnetic bearing and a backup bearing, applying current to the magnetic bearing to produce movement of the rotation shaft, determining a contact point between the rotation shaft and the backup bearing according to movement of the rotation shaft, determining a final target value using the contact point and predetermined position information of the magnetic bearing, determining a magnetic center of the magnetic bearing through the final target value, comparing the magnetic center of the magnetic bearing and a mechanical center of the backup bearing to determine a center error, and aligning the magnetic center of the magnetic bearing and the mechanical center of the backup bearing based on the determined center error.

公开(公告)号：US20170276616A1

公开(公告)日：2017-09-28

申请号：US15470108

申请日：2017-03-27

Applicant: LG ELECTRONICS INC.

Inventor： Kiwook LEE ,  Chanmyung PARK ,  Namsoo LEE ,  Jinhee JEONG

IPC: G01N21/954 ,  F25B31/02 ,  F25B39/00 ,  G01M15/14 ,  F25B49/02

CPC classification number: G01N21/954 ,  F25B31/026 ,  F25B39/00 ,  F25B39/02 ,  F25B39/04 ,  F25B45/00 ,  F25B49/02 ,  F25B2339/0242 ,  F25B2339/046 ,  F25B2345/001 ,  F25B2345/006 ,  F25B2500/06 ,  F25B2500/222 ,  G01M15/14 ,  G01N2021/9546

Abstract: Disclosed is a detection device for detecting a turbomachine including an opening, the detection device comprises: a flange configured to close the opening; and an endoscope assembly including an endoscope body, a detector extending from the endoscope assembly and inserted into an internal space of the turbomachine through the flange and an extension part connecting the endoscope body and the detector.