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    SCROLL COMPRESSOR INCLUDING A CRANKPIN HAVING AN UPPER RECESS
    11.
    发明申请
    SCROLL COMPRESSOR INCLUDING A CRANKPIN HAVING AN UPPER RECESS 有权

    公开(公告)号：US20210131431A1

    公开(公告)日：2021-05-06

    申请号：US17087954

    申请日：2020-11-03

    Applicant: Danfoss Commercial Compressors

    Inventor： Remi Bou Dargham ,  Arnaud Daussin ,  Dominique Gross

    IPC: F04C18/02 ,  F04C23/00

    Abstract: The scroll compressor comprises a fixed scroll having a fixed end plate and a fixed spiral wrap extending from the fixed end plate; an orbiting scroll (9) having an orbiting end plate and an orbiting spiral wrap extending from the orbiting end plate, the fixed spiral wrap and the orbiting spiral wrap meshing with each other to form compression chambers; a vertical drive shaft (19) having a crankpin (21) at an upper end portion of the vertical drive shaft (19), the crankpin (21) including an outer circumferential surface (23) cooperating with an orbiting scroll bearing (24). The crankpin (21) includes a recess (25) formed in an axial end face (26) of the crankpin (21), the recess (25) and an upper portion (27) of the outer circumferential surface (23) defining therebetween a circumferential wall (28) extending along at least a part of the circumference of the crankpin (21), the circumferential wall (28) being deformable in a radial direction during operation of the scroll compressor.

    A SCROLL COMPRESSOR HAVING AN OIL DISCHARGE DEVICE
    13.
    发明申请
    A SCROLL COMPRESSOR HAVING AN OIL DISCHARGE DEVICE 审中-公开

    公开(公告)号：US20180274543A1

    公开(公告)日：2018-09-27

    申请号：US15542487

    申请日：2015-10-16

    Applicant: Danfoss Commercial Compressors

    Inventor： Arnaud Daussin ,  Patrice Bonnefoi ,  Yves Rosson ,  Ingrid Claudin

    IPC: F04C29/02 ,  F04C18/02

    Abstract: A scroll compressor including a compression unit includes a first non-orbiting scroll having a receiving cavity and an orbiting scroll arrangement. The compression unit further includes a refrigerant suction part suitable for supplying the compression unit with a refrigerant flow, and a first anti-rotation device located in the receiving cavity and configured to prevent rotation of the orbiting scroll arrangement with respect to the first fixed non-orbiting scroll. The compression unit further includes an oil discharge device including an oil discharge passage, the oil discharge passage includes an oil inlet fluidly connected to the receiving cavity and at least one oil discharge outlet located in a refrigerant flow path and configured to supply the refrigerant flow with oil from the receiving cavity.

    A CENTRIFUGAL CONPRESSOR HAVING AN INTER-STAGE SEALING ARRANGEMENT
    14.
    发明申请
    A CENTRIFUGAL CONPRESSOR HAVING AN INTER-STAGE SEALING ARRANGEMENT 审中-公开

    公开(公告)号：US20180142694A1

    公开(公告)日：2018-05-24

    申请号：US15735301

    申请日：2016-06-20

    Applicant: DANFOSS COMMERCIAL COMPRESSORS

    Inventor： Arnaud Daussin ,  Patrice Bonnefoi ,  Nicolas Nouyrigat

    IPC: F04D29/10 ,  F04D29/051 ,  F04D29/056

    CPC classification number: F04D29/102 ,  F04D17/12 ,  F04D17/122 ,  F04D25/06 ,  F04D29/051 ,  F04D29/053 ,  F04D29/056 ,  F04D29/286

    Abstract: The centrifugal compressor includes an hermetic housing; a drive shaft (4); a first and a second compression stage (8, 9) configured to compress a refrigerant, the first and second compression stages (8, 9) respectively including a first and a second impeller (18, 19), the first and second impellers (18, 19) being connected to the drive shaft (4) and being arranged in a back-to-back configuration; a radial annular groove (27) formed between the back-sides (25, 26) of the first and second impellers (18, 19); an inter-stage sealing arrangement (35) provided between the first and second compressor stages (8, 9) and in the radial annular groove (27); a radial bearing arrangement configured to rotatably support the drive shaft (4); and a thrust bearing arrangement configured to limit an axial movement of the drive shaft (4) during operation. The diameter of the inter-stage sealing arrangement (35) is configured to minimize the amplitude of the axial load applying on the thrust bearing arrangement during operation of the centrifugal compressor (2).

    Scroll compressor including a first and a second axial stabilizing arrangement
    16.
    发明授权
    Scroll compressor including a first and a second axial stabilizing arrangement 有权

    公开(公告)号：US11841013B2

    公开(公告)日：2023-12-12

    申请号：US17771851

    申请日：2020-11-02

    Applicant: DANFOSS COMMERCIAL COMPRESSORS

    Inventor： Remi Bou Dargham ,  Arnaud Daussin ,  David Genevois

    IPC: F04C18/02 ,  F04C23/00

    CPC classification number: F04C18/0215 ,  F04C18/0284 ,  F04C23/008

    Abstract: The scroll compressor includes a fixed scroll (8) having a fixed end plate (11) and a fixed spiral wrap (12) extending from the fixed end plate (11); an orbiting scroll (9) having an orbiting base plate (14) and an orbiting spiral wrap (15) extending from a first face of the orbiting base plate (14), the orbiting spiral wrap (15) of the orbiting scroll (9) meshing with the fixed spiral wrap (12) of the fixed scroll (8) to form compression chambers (18), the orbiting base plate (14) having a flange portion (16) radially extending on at least part of the circumference of the orbiting base plate (14) and beyond an outer wall surface of the orbiting spiral wrap (15); and a first and a second axial stabilizing arrangement (29, 31) configured to axially stabilize the orbiting scroll (9), the first axial stabilizing arrangement (29) being formed between the flange portion (16) of the orbiting base plate (14) and the fixed scroll (8), and the second axial stabilizing arrangement (31) being formed between a portion of the orbiting spiral wrap (15) of the orbiting scroll (9) and the fixed end plate (11) of the fixed scroll (8).

    SCROLL COMPRESSOR INCLUDING A LUBRICATION SYSTEM PROVIDED WITH AN OIL STIRRING ARRANGEMENT
    17.
    发明申请
    SCROLL COMPRESSOR INCLUDING A LUBRICATION SYSTEM PROVIDED WITH AN OIL STIRRING ARRANGEMENT 有权

    公开(公告)号：US20220163036A1

    公开(公告)日：2022-05-26

    申请号：US17526190

    申请日：2021-11-15

    Applicant: Danfoss Commercial Compressors

    Inventor： Arnaud Daussin ,  David Genevois ,  Remi Bou Dargham

    IPC: F04C15/00 ,  F04C2/02

    Abstract: The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including a plurality of orbital discs (28) respectively rotatably mounted in circular receiving cavities (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving cavity (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (36), the lubrication system including a plurality of oil reservoirs (43) each arranged in a bottom surface of a respective circular receiving cavity, and a plurality of oil stirring arrangements each configured to stir oil contained in a respective oil reservoir (43).

    FLUID MACHINE HAVING A LABYRINTH SEAL
    19.
    发明申请
    FLUID MACHINE HAVING A LABYRINTH SEAL 审中-公开

    公开(公告)号：US20180156337A1

    公开(公告)日：2018-06-07

    申请号：US15576433

    申请日：2016-05-19

    Applicant: Danfoss Commercial Compressors

    Inventor： Arnaud Daussin ,  Patrice Bonnefoi ,  Yves Rosson ,  Nicolas Nouyrigat

    IPC: F16J15/447

    CPC classification number: F16J15/4472 ,  F01D11/02 ,  F04D29/08 ,  F05D2220/30 ,  F05D2240/55

    Abstract: The fluid machine includes a stationary member (6), a rotary member (5) and a labyrinth seal (9) including a succession of stationary steps (11) formed on the stationary member (6), and a succession of rotary steps (14) formed on the rotary member (5). The labyrinth seal (9) further includes a plurality of stationary recesses (18) each formed in a radial wall portion (12) of a respective stationary step (11), and a plurality of rotary recesses (21) each formed in a radial wall portion (16) of a respective rotary step (14). Each stationary step (11) defines a stationary projection (19) delimited by the stationary recess (18) formed on said stationary step (11), and each rotary step (14) defines a rotary projection (22) delimited by the rotary recess (21) formed on said rotary step (14). The axial width (Wr) of each of the stationary recesses (18) and of the rotary recesses (21) substantially equals the axial width (Wp) of each of the stationary projections (19) and of the rotary projections (22).

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