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108 条记录 (耗时 0.019 秒)

    INTEGRATED SCREW COMPRESSOR MOTOR
    31.
    发明申请
    INTEGRATED SCREW COMPRESSOR MOTOR 有权

    公开(公告)号：US20210293236A1

    公开(公告)日：2021-09-23

    申请号：US16330710

    申请日：2017-09-13

    申请人： CARRIER CORPORATION

    发明人： Vishnu M. Sishtla ,  Jagadeesh Tangudu

    IPC分类号： F04C2/16

    摘要： A screw compressor is provided and includes a housing (11), helical screws (21, 24) disposed within the housing (11) for rotation about respective rotational axes (RA1, RA2) in a mutually engaged relationship, at least one stator (30, 40) disposed within the housing (11) about a corresponding one of the helical screws (21, 24) and a conductive element (50, 60). The conductive element (50, 60) is wound about the at least one stator (30, 40) such that current applied to the conductive element (50, 60) generates a flux field by which the corresponding one of the helical screws (21, 24) is driven to rotate about the corresponding rotational axis (RA1, RA2).

    Vapor compression system with refrigerant-lubricated compressor
    32.
    发明授权
    Vapor compression system with refrigerant-lubricated compressor 有权

    公开(公告)号：US11112148B2

    公开(公告)日：2021-09-07

    申请号：US16320802

    申请日：2017-08-10

    申请人： Carrier Corporation

    发明人： Scott A. Nieforth ,  Vishnu M. Sishtla

    IPC分类号： F25B31/00 ,  F25B41/20

    摘要： A vapor compression system (20; 400; 420) comprises: a compressor (22) having a suction port (40) and a discharge port (42); a heat rejection heat exchanger (58) coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (88); a first lubricant flowpath (120, 126) from the heat rejection heat exchanger to the compressor; a second lubricant flowpath (121, 126) from the heat absorption heat exchanger to the compressor; at least one lubricant pump (190); and a controller (900) configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on a sensed fluctuation.

    Two-Stage Centrifugal Compressor
    35.
    发明申请
    Two-Stage Centrifugal Compressor 审中-公开

    公开(公告)号：US20190323515A1

    公开(公告)日：2019-10-24

    申请号：US16461985

    申请日：2017-11-09

    申请人： Carrier Corporation

    发明人： Vishnu M. Sishtla

    IPC分类号： F04D29/16 ,  F04D17/12 ,  F04D29/052 ,  F04D29/058

    摘要： A compressor (22) comprises: a housing (50); a shaft (70); a plurality of bearings (66, 67, 68, 74, 76) mounting the shaft to the housing for relative rotation about an axis (500); and a motor (52). The motor has: a rotor (64) mounted on the shaft; and a stator (62). A first impeller (54A) is mounted the shaft to a first side of the motor. A second impeller (54B) is mounted the shaft to a second side of the motor. The first impeller is an open impeller and the second impeller is a shrouded impeller.

    Compressor Bearing Cooling Via Purge Unit
    37.
    发明申请
    Compressor Bearing Cooling Via Purge Unit 审中-公开
    压缩机轴承冷却通过吹扫单元

    公开(公告)号：US20160054040A1

    公开(公告)日：2016-02-25

    申请号：US14784478

    申请日：2014-04-15

    申请人： CARRIER CORPORATION

    发明人： Ulf J. Jonsson ,  Vishnu M. Sishtla ,  Zaffir A. Chaudhry

    IPC分类号： F25B45/00 ,  F25B13/00

    CPC分类号： F25B45/00 ,  F25B1/053 ,  F25B9/002 ,  F25B13/00 ,  F25B31/002 ,  F25B43/043 ,  F25B49/005 ,  F25B2500/26 ,  F25B2700/04

    摘要： A compressor (22) has a housing assembly (40) with a suction port (24), a discharge port (26), and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working impellers (44) are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. An inlet guide vane (IGV) array (174) is between the suction port (24) and the one or more impellers (44). One or more bearings (66, 68) support the rotor (64) and/or the one or more impellers (44). A purge unit (400) has a vapor inlet line (410) for receiving a refrigerant flow and a return line (414, 417A, 417B) for returning a contaminant-depleted refrigerant flow. A supply flowpath (407A, 407B) for supplying refrigerant to the bearings extends from the purge unit.

    摘要翻译： 压缩机（22）具有具有吸入口（24），排出口（26）和电动机室（60）的壳体组件（40）。 电动机（42）在电动机室内具有定子（62）和定子内的转子（64）。 转子安装成围绕转子轴线（500）旋转。 一个或多个工作叶轮（44）联接到转子，以在至少第一状态下由转子驱动，以便通过吸入口吸入流体并从排出口排出流体。 入口导叶（IGV）阵列（174）位于吸入口（24）和一个或多个叶轮（44）之间。 一个或多个轴承（66,68）支撑转子（64）和/或一个或多个叶轮（44）。 净化单元（400）具有用于接收制冷剂流的蒸汽入口管线（410）和用于返回污染物贫乏的制冷剂流的返回管线（414,417A，417B）。 用于向轴承供应制冷剂的供应流路（407A，407B）从吹扫单元延伸。

    Compressor Bearing Cooling
    38.
    发明申请
    Compressor Bearing Cooling 审中-公开
    压缩机轴承冷却

    公开(公告)号：US20160040915A1

    公开(公告)日：2016-02-11

    申请号：US14779157

    申请日：2014-02-19

    申请人： Carrier Corporation

    发明人： Ulf J. Jonsson ,  Vishnu M. Sishtla ,  Zaffir A. Chaudhry

    IPC分类号： F25B31/00 ,  F04D29/58 ,  F04D25/06

    CPC分类号： F25B31/006 ,  F04D25/06 ,  F04D29/056 ,  F04D29/063 ,  F04D29/582 ,  F04D29/5826 ,  F04D29/584 ,  F05D2260/602 ,  F25B1/053 ,  F25B25/005 ,  F25B31/008 ,  F25B41/00 ,  F25B2339/047 ,  F25B2341/0012 ,  F25B2341/0015 ,  F25B2400/13 ,  F25B2500/16

    摘要： A compressor (22) has a housing assembly (40) with a suction port (24), a discharge port (26), and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working impellers (44) are coupled to the rotor to be driven by the rotor in at least a first condition so as to draw fluid in through the suction port and discharge the fluid from the discharge port. An inlet guide vane (IGV) array (174) is between the suction port (24) and the one or more impellers (44). One or more bearing systems (66, 68) support the rotor (64) and/or the one or more impellers (44). One or more main drain passages (120, 234 206; 120, 232, 202, 206) are coupled to the bearings to pass fluid along a drain flowpath from the bearings to a location (172) upstream of the impeller and downstream of the IGV array.

    摘要翻译： 压缩机（22）具有具有吸入口（24），排出口（26）和电动机室（60）的壳体组件（40）。 电动机（42）在电动机室内具有定子（62）和定子内的转子（64）。 转子安装成围绕转子轴线（500）旋转。 一个或多个工作叶轮（44）联接到转子，以在至少第一状态下由转子驱动，以便通过吸入口吸入流体并从排出口排出流体。 入口导叶（IGV）阵列（174）位于吸入口（24）和一个或多个叶轮（44）之间。 一个或多个轴承系统（66,68）支撑转子（64）和/或一个或多个叶轮（44）。 一个或多个主排水通道（120,234,206; 120,2232,202,206）联接到轴承，以将流体沿排水流路从轴承传递到叶轮上游的位置（172）并且在IGV的下游 数组。

    CENTRIFUGAL COMPRESSOR WITH RECIRCULATION PASSAGE
    40.
    发明申请
    CENTRIFUGAL COMPRESSOR WITH RECIRCULATION PASSAGE 有权

    公开(公告)号：US20230025097A1

    公开(公告)日：2023-01-26

    申请号：US17960401

    申请日：2022-10-05

    申请人： Carrier Corporation

    发明人： Vishnu M. Sishtla ,  William T. Cousins

    IPC分类号： F04D27/02 ,  F04D29/42 ,  F04D29/68 ,  F01D17/16 ,  F04D17/14 ,  F04D27/00 ,  F04D29/28 ,  F25B31/02

    摘要： An example centrifugal compressor includes a housing that defines an inlet chamber and includes first and second openings that define a recirculation passage in fluid communication with the inlet chamber. An impeller is disposed within the housing and is rotatable about a longitudinal axis to draw fluid into the inlet chamber. The first and second openings are at different axial locations along the longitudinal axis. A plurality of inlet guide vanes are rotatable and situated in the inlet chamber. The centrifugal compressor includes a ring and a controller for moving the ring along the longitudinal axis between a first position and a second position when rotating the inlet guide vanes. The ring obstructs at least one of the first and second openings more in the second position than in the first position.