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    TECHNIQUES FOR APPLYING BRAZING MATERIAL TO FORM A SHROUDED IMPELLER
    1.
    发明申请
    TECHNIQUES FOR APPLYING BRAZING MATERIAL TO FORM A SHROUDED IMPELLER 审中-公开

    公开(公告)号：WO2022187038A1

    公开(公告)日：2022-09-09

    申请号：PCT/US2022/017412

    申请日：2022-02-23

    Applicant: DANFOSS A/S

    Inventor： LI, Tianlei ,  SUN, Lin Xiang

    IPC: B23P15/00 ,  B23P15/04 ,  F01D5/04 ,  F04D29/22 ,  F04D29/26 ,  F04D29/32

    Abstract: In some aspects, the techniques described herein relate to a method of manufacturing a shrouded impeller, including: arranging a shell relative to an impeller, wherein the impeller includes a plurality of blades, wherein the shell includes a plurality of slots, and wherein the arranging step includes aligning each of the slots with a tip of a respective one of the blades of the impeller; applying brazing paste to each of the tips by using the slots to direct the brazing paste to the tips; arranging a shroud relative to the impeller; and joining the impeller and shroud using a brazing technique.

    COMPRESSOR SHROUDED IMPELLER ARRANGEMENT
    2.
    发明申请
    COMPRESSOR SHROUDED IMPELLER ARRANGEMENT 审中-公开

    公开(公告)号：WO2021118916A1

    公开(公告)日：2021-06-17

    申请号：PCT/US2020/063562

    申请日：2020-12-07

    Applicant: DANFOSS A/S

    Inventor： LI, Tianlei ,  SUN, Lin Xiang ,  LOHMAN, Kevin

    IPC: F01D5/04 ,  F04D29/38

    Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, an impeller configured to rotate about an axis, and a shroud. The impeller has a plurality of blades. The shroud is secured to the impeller with an adhesive at tips of the plurality of blades.

    MOTOR COOLING USING IMPINGEMENT JETS CREATED BY PERFORATED COOLING JACKET
    3.
    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.

    POWER ELECTRONICS COOLING ARRANGEMENT
    4.
    发明申请
    POWER ELECTRONICS COOLING ARRANGEMENT 审中-公开

    公开(公告)号：WO2021022192A1

    公开(公告)日：2021-02-04

    申请号：PCT/US2020/044570

    申请日：2020-07-31

    Applicant: DANFOSS A/S

    Inventor： SUN, Lin Xiang ,  PRITCHARD, Brandon Keith

    IPC: F24F1/24 ,  F04D29/58 ,  F25B1/10 ,  F25B31/00 ,  H02K9/00 ,  H05K7/20

    Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a first stage and a second stage downstream of the first stage, and a cooling line configured to cool power electronics. The cooling line is configured to be switched between a first mode and a second mode. The first mode is configured to dump refrigerant between the first stage and the second stage, and the second mode is configured to dump refrigerant upstream of the first stage.

    AXIAL MAGNETIC BEARING FOR CENTRIFUGAL REFRIGERANT COMPRESSOR
    6.
    发明申请
    AXIAL MAGNETIC BEARING FOR CENTRIFUGAL REFRIGERANT COMPRESSOR 审中-公开

    公开(公告)号：WO2021167613A1

    公开(公告)日：2021-08-26

    申请号：PCT/US2020/019043

    申请日：2020-02-20

    Applicant: DANFOSS A/S

    Inventor： GONZALEZ, Delvis Anibal ,  SUN, Lin Xiang

    IPC: F16C32/04 ,  B23P15/00 ,  F01D3/00 ,  F25B31/00 ,  F25B31/02

    Abstract: This disclosure relates to an axial magnetic bearing for a centrifugal refrigerant compressor, and a corresponding system and method. A centrifugal refrigerant compressor system according to an exemplary aspect of the present disclosure includes, among other things, an impeller connected to a shaft, and a magnetic bearing system supporting the shaft. The magnetic bearing system includes an axial magnetic bearing, which itself includes a first permanent magnet configured to generate a first bias flux, a second permanent magnet axially spaced-apart from the first permanent magnet and configured to generate a second bias flux, and an electromagnet. The electromagnet includes a coil arranged radially outward of the first and second permanent magnets, and the electromagnet is configured to selectively generate either a first control flux or a second control flux to apply a force to the shaft in a first axial direction or second axial direction opposite the first axial direction, respectively.

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