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    Variable-speed scroll refrigeration compressor
    22.
    发明授权
    Variable-speed scroll refrigeration compressor 有权
    变速涡旋制冷压缩机

    公开(公告)号：US08974190B2

    公开(公告)日：2015-03-10

    申请号：US13715214

    申请日：2012-12-14

    Applicant: Danfoss Commercial Compressors

    Inventor： Patrice Bonnefoi ,  Feifei Wang

    IPC: F04C18/00 ,  F04B49/06 ,  F04C28/06 ,  F04C28/08 ,  F04C29/02 ,  F04C18/02 ,  F04C23/00

    CPC classification number: F04C18/00 ,  F04C18/0215 ,  F04C23/008 ,  F04C28/06 ,  F04C28/08 ,  F04C29/025

    Abstract: The compressor includes a sealed enclosure containing a compression stage, an electric motor having a stator and a rotor, an oil pump rotationally coupled to the rotor, including an oil inlet port connected to an oil sump, and control means arranged to command the operation of the motor in a start-up mode in which the rotor is rotated at a first speed of rotation included in a first speed range, and a normal operating mode in which the rotor is rotated at a second speed of rotation included in a second speed range higher than the first speed range. The compressor includes an oil injection device having an oil injection duct connected to a first oil outlet port of the oil pump and arranged to supply the compression stage with oil.

    Abstract translation: 该压缩机包括：包含压缩级的密封外壳，具有定子和转子的电动马达，与该转子相连接的包括连接到油底壳的进油口的油泵，以及控制装置， 所述电动机处于其中所述转子以包括在第一速度范围内的第一转速旋转的启动模式，以及所述转子以包括在第二速度范围内的第二转速旋转的正常操作模式 高于第一速度范围。 压缩机包括注油装置，该注油装置具有连接到油泵的第一出油口的喷油管道，并设置成向压缩级供油。

    Scroll compressor having a centrifugal oil pump
    23.
    发明授权
    Scroll compressor having a centrifugal oil pump 有权

    公开(公告)号：US11913455B2

    公开(公告)日：2024-02-27

    申请号：US17690517

    申请日：2022-03-09

    Applicant: Danfoss Commercial Compressors

    Inventor： Patrice Bonnefoi

    IPC: F04C29/02 ,  F04C18/02 ,  F04C23/00

    CPC classification number: F04C29/028 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/025

    Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).

    Scroll compressor having a centrifugal oil pump
    24.
    发明授权
    Scroll compressor having a centrifugal oil pump 有权

    公开(公告)号：US11754074B2

    公开(公告)日：2023-09-12

    申请号：US17690517

    申请日：2022-03-09

    Applicant: Danfoss Commercial Compressors

    Inventor： Patrice Bonnefoi

    IPC: F04C29/02 ,  F04C18/02 ,  F04C23/00

    CPC classification number: F04C29/028 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/025

    Abstract: The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).

    SCROLL COMPRESSOR HAVING A PRESS-FITTED MOTOR AND A VERTICALLY CENTRAL SUCTION INLET
    27.
    发明申请
    SCROLL COMPRESSOR HAVING A PRESS-FITTED MOTOR AND A VERTICALLY CENTRAL SUCTION INLET 有权

    公开(公告)号：US20210131432A1

    公开(公告)日：2021-05-06

    申请号：US17087986

    申请日：2020-11-03

    Applicant: Danfoss Commercial Compressors

    Inventor： Patrice Bonnefoi ,  Yann Even ,  Yves Rosson ,  Brian Angel ,  Meldener Gael

    IPC: F04C18/02 ,  F04C15/06

    Abstract: The scroll compressor (2) includes a hermetic casing (3) comprising a mid shell (4) provided with a suction inlet (7); a compression unit (11) arranged within the hermetic casing (3); a drive shaft (27) configured to drive an orbiting scroll (13) of the compression unit (11); an electric motor (21) coupled to the drive shaft (27) and configured to drive in rotation the drive shaft (27) about its rotational axis, the electric motor (21) including a rotor (22) and a stator (23) which includes a stator stack (24), wherein the stator stack (24) is press-fitted in the mid shell (4), the suction inlet (7) is facing the stator stack (24), and the compression unit (11) includes a single suction opening (34) arranged at an opposite position in relation to the suction inlet (7).

    Scroll compressor having an oil discharge device
    28.
    发明授权
    Scroll compressor having an oil discharge device 有权

    公开(公告)号：US10578109B2

    公开(公告)日：2020-03-03

    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 ,  F04C23/00 ,  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.

    Scroll compressor with a lubrication arrangement
    29.
    发明授权
    Scroll compressor with a lubrication arrangement 有权

    公开(公告)号：US10294943B2

    公开(公告)日：2019-05-21

    申请号：US15310572

    申请日：2015-01-27

    Applicant: DANFOSS COMMERCIAL COMPRESSORS

    Inventor： Yves Rosson ,  Patrice Bonnefoi ,  Ingrid Claudin

    IPC: F01C1/02 ,  F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C2/00 ,  F04C29/02 ,  F01C21/02 ,  F04C18/02

    Abstract: The scroll compressor (1) includes an orbiting scroll arrangement (7), and a drive shaft (18) configured to drive the orbiting scroll arrangement (7) in an orbital movement, the drive shaft (18) including a lubrication channel (32) and a first lubrication hole (35) fluidly connected to the lubrication channel (32) and emerging in an outer wall of the drive shaft (18). The scroll compressor (1) further includes a first and a second bearings (38, 39) axially offset along a rotation axis of the drive shaft (18) and each configured to engage the drive shaft (18). The first and second bearings (38, 39) and the drive shaft (18) partially define a first annular gap (44) in which emerges the first lubrication hole (35). The first bearing (38) and the drive shaft (18) define a first oil recess fluidly connected to the first annular gap (44), and the second bearing (39) and the drive shaft (18) define a second oil recess fluidly connected to the first annular gap (44).

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