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    Refrigerator
    1.
    发明授权
    Refrigerator 有权

    公开(公告)号：US11674721B2

    公开(公告)日：2023-06-13

    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

    CPC classification number: F25B31/006 ,  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.

    Compressor and chiller system including same
    2.
    发明授权
    Compressor and chiller system including same 有权

    公开(公告)号：US10962020B2

    公开(公告)日：2021-03-30

    申请号：US16329180

    申请日：2016-10-21

    Applicant: LG ELECTRONICS INC.

    Inventor： Kiwook Lee ,  Seongmin Jang ,  Jinhee Jeong ,  Chanmyung Park ,  Solji Ryu

    IPC: F04D29/058 ,  F04D29/056 ,  F25B31/02 ,  F04D29/05 ,  F25B31/00 ,  F04D17/10 ,  F04D29/051

    Abstract: A compressor including a motor having a rotary shaft, a rotor and a stator, and an impeller at a front end of the rotary shaft to suction refrigerant in an axial direction and compress the refrigerant in a centrifugal direction. The compressor has a collar at a rear end of the rotary shaft and coupled to the rotary shaft to be extended outwardly in a radial direction of the rotary shaft. Radial bearings support a radial movement of the rotary shaft at a front and rear of the stator. A thrust bearing prevents an axial movement of the rotary shaft. A mechanical backup bearing also prevents the axial movement of the rotary shaft. A fixing unit supports the backup bearing at the rear end of the rotary shaft, wherein the backup bearing is arranged to overlap the thrust bearing in the radial direction of the rotary shaft.

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