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    MOTOR COOLING USING IMPINGEMENT JETS CREATED BY PERFORATED COOLING JACKET
    1.
    发明申请
    MOTOR COOLING USING IMPINGEMENT JETS CREATED BY PERFORATED COOLING JACKET 审中-公开

    公开(公告)号：WO2022119698A1

    公开(公告)日：2022-06-09

    申请号：PCT/US2021/058932

    申请日：2021-11-11

    Applicant: DANFOSS A/S

    Inventor： FAGUNDES, Tadeu Mendonca ,  YAN, Jin ,  SUN, Lin Xiang

    IPC: F25B31/00

    Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a cooling jacket including a plurality of perforations configured to cause refrigerant flowing through the perforations to form impingement jets and further configured to direct the impingement jets onto a surface adjacent a stator. The refrigerant compressor may be used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.

    REFRIGERANT COMPRESSOR WITH IMPELLER HAVING SLOTTED SHROUD
    2.
    发明申请
    REFRIGERANT COMPRESSOR WITH IMPELLER HAVING SLOTTED SHROUD 审中-公开

    公开(公告)号：WO2022225743A1

    公开(公告)日：2022-10-27

    申请号：PCT/US2022/024374

    申请日：2022-04-12

    Applicant: DANFOSS A/S

    Inventor： ZHANG, Tianli ,  YAN, Jin ,  URCIA, Jose Manuel

    IPC: F04D29/42 ,  F04D29/00 ,  F04D29/40 ,  F04D29/44 ,  F04D29/66 ,  F04D29/68

    Abstract: A refrigerant compressor and a method of operating said refrigerant compressor. The refrigerant compressor may comprise: a shrouded impeller including a passageway permitting refrigerant to flow from a location radially outside a shroud of the shrouded impeller to a location radially inside the shroud. The method may comprise: operating refrigerant compressor including a shrouded impeller such that the shrouded impeller rotates within a housing; and directing leakage flow between the shrouded impeller and the housing back into the shrouded impeller through a passageway extending radially through a shroud of the shrouded impeller.

    ACTIVE UNLOADING DEVICE FOR MIXED FLOW COMPRESSORS
    4.
    发明申请
    ACTIVE UNLOADING DEVICE FOR MIXED FLOW COMPRESSORS 审中-公开

    公开(公告)号：WO2021096905A1

    公开(公告)日：2021-05-20

    申请号：PCT/US2020/059929

    申请日：2020-11-11

    Applicant: DANFOSS A/S

    Inventor： PEREZ, Alonso ,  LI, Tianlei ,  YAN, Jin

    IPC: F04D1/00 ,  F04D3/00 ,  F04D17/00 ,  F25B1/10 ,  F25B1/053 ,  F04D17/10 ,  F04D27/02

    Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a mixed compression stage having both axial and radial components arranged along a main flow path, and a radial compression stage having an impeller with a plurality of vanes arranged in the main flow path downstream of the mixed compression stage. The impeller is configured to rotate about an axis and has an outlet downstream of the vanes. A movable diffuser is arranged at the outlet, and the movable diffuser is configured to vary an area of the outlet.

    INTEGRATED CONNECTOR FOR MULTI-STAGE COMPRESSOR
    5.
    发明申请
    INTEGRATED CONNECTOR FOR MULTI-STAGE COMPRESSOR 审中-公开

    公开(公告)号：WO2021071819A1

    公开(公告)日：2021-04-15

    申请号：PCT/US2020/054369

    申请日：2020-10-06

    Applicant: DANFOSS A/S

    Inventor： SCHAEFER, Arnold Martin ,  YAN, Jin ,  PEREZ, Alonso Misael

    IPC: F04D17/00 ,  F25B1/00 ,  F25B1/04 ,  F25B1/10 ,  F25B35/04 ,  F25B41/00 ,  F25B41/04

    Abstract: This disclosure relates to a compressor having at least two compression stages. In particular, an exemplary compressor includes a first radial compression stage arranged along an axis, a second radial compression stage arranged along the axis, and a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage. The connector has a plurality of sections arranged about the axis. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.

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