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    Centrifugal compressor with extended operating range
    3.
    发明授权
    Centrifugal compressor with extended operating range 有权

    公开(公告)号：US10184481B2

    公开(公告)日：2019-01-22

    申请号：US14832399

    申请日：2015-08-21

    Applicant: DANFOSS A/S

    Inventor： Joost Brasz ,  Mogens Rasmussen

    IPC: F04D27/00 ,  F04D29/44 ,  F04D27/02 ,  F25B1/053 ,  F25B1/10 ,  F04D17/12

    Abstract: This disclosure relates to a centrifugal compressor. In a first example, the compressor includes a first impeller provided in a main refrigerant flow path, a second impeller provided in the main refrigerant flow path downstream of the first impeller, and a recirculation flow path. In the first example, the recirculation flow path is provided between a first location and a second location along the main refrigerant flow path. The first location is downstream of the second location, and the second location is downstream of the first impeller. In a second example, the compressor includes an impeller provided in a main refrigerant flow path, and a recirculation flow path provided between a first location and a second location along the main refrigerant flow path. In the second example, the recirculation flow path includes a recirculation volute. Further disclosed is a method for operating a centrifugal compressor.

    COMPRESSOR WITH ROTOR COOLING PASSAGEWAY
    4.
    发明申请
    COMPRESSOR WITH ROTOR COOLING PASSAGEWAY 审中-公开
    压缩机与转子冷却PASSAGEWAY

    公开(公告)号：US20160138841A1

    公开(公告)日：2016-05-19

    申请号：US14898312

    申请日：2013-06-12

    Applicant: DANFOSS A/S

    Inventor： William Turner Thornton ,  Joost Brasz

    IPC: F25B31/00 ,  F25B31/02 ,  F04D29/58

    CPC classification number: F25B31/006 ,  F04D29/5806 ,  F25B1/053 ,  F25B31/026 ,  F25B49/02 ,  F25B2600/2515 ,  F25B2700/21157

    Abstract: A centrifugal compressor for a refrigeration system is disclosed. The centrifugal compressor includes an electric motor, which includes a rotor and a stator. The compressor further includes a housing enclosing the electric motor, a stator cooling passage provided within the housing, and a rotor cooling passageway provided within the housing. The rotor cooling passageway is independent of the stator cooling passageway.

    Abstract translation: 公开了一种用于制冷系统的离心式压缩机。 离心压缩机包括电动机，其包括转子和定子。 压缩机还包括封闭电动机的壳体，设置在壳体内的定子冷却通道以及设置在壳体内的转子冷却通道。 转子冷却通道独立于定子冷却通道。

    CENTRIFUGAL COMPRESSOR WITH EXTENDED OPERATING RANGE
    5.
    发明申请
    CENTRIFUGAL COMPRESSOR WITH EXTENDED OPERATING RANGE 审中-公开
    离心式压缩机具有扩展的操作范围

    公开(公告)号：US20150354589A1

    公开(公告)日：2015-12-10

    申请号：US14832399

    申请日：2015-08-21

    Applicant: DANFOSS A/S

    Inventor： Joost Brasz ,  Mogens Rasmussen

    IPC: F04D29/44 ,  F04D27/00

    CPC classification number: F04D27/009 ,  F04D17/122 ,  F04D27/0215 ,  F04D27/0238 ,  F04D29/444 ,  F05D2250/52 ,  F25B1/053 ,  F25B1/10 ,  F25B2600/0253 ,  F25B2600/0262 ,  Y02B30/741

    Abstract: This disclosure relates to a centrifugal compressor. In a first example, the compressor includes a first impeller provided in a main refrigerant flow path, a second impeller provided in the main refrigerant flow path downstream of the first impeller, and a recirculation flow path. In the first example, the recirculation flow path is provided between a first location and a second location along the main refrigerant flow path. The first location is downstream of the second location, and the second location is downstream of the first impeller. In a second example, the compressor includes an impeller provided in a main refrigerant flow path, and a recirculation flow path provided between a first location and a second location along the main refrigerant flow path. In the second example, the recirculation flow path includes a recirculation volute. Further disclosed is a method for operating a centrifugal compressor.

    Abstract translation: 本公开涉及一种离心式压缩机。 在第一示例中，压缩机包括设置在主制冷剂流路中的第一叶轮，设置在第一叶轮下游的主制冷剂流路中的第二叶轮和再循环流路。 在第一示例中，再循环流动路径设置在沿着主制冷剂流动路径的第一位置和第二位置之间。 第一位置在第二位置的下游，第二位置在第一叶轮的下游。 在第二示例中，压缩机包括设置在主制冷剂流动路径中的叶轮和设置在沿着主制冷剂流动路径的第一位置和第二位置之间的再循环流动路径。 在第二示例中，再循环流动路径包括再循环蜗壳。 进一步公开了一种操作离心式压缩机的方法。

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