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1. 发明申请

WO2018111985A1 SCREW COMPRESSOR WITH MAGNETIC GEAR 审中-公开
公开(公告)号：WO2018111985A1
公开(公告)日：2018-06-21
申请号：PCT/US2017/065990
申请日：2017-12-13
申请人： CARRIER CORPORATION
发明人： TANGUDU, Jagadeesh , SISHTLA, Vishnu M.
IPC分类号： F04C29/00 , F04C18/16
摘要： A screw compressor (12) includes a casing (20) having a suction port and a discharge port, a male rotor (28) rotatable relative to said casing about a first axis (A), a female rotor (30) rotatable relative to said casing about a second axis (B), and a magnetic gear system including a first magnetic gear (60) associated with said male rotor and a second magnetic gear (62) associated with said female rotor. The first magnetic gear and the second magnetic gear are positioned such that a magnetic field of said first magnetic gear interacts with said second magnetic gear to drive rotation of said female rotor about said second axis.

2. 发明申请

WO2018093440A1 SCREW COMPRESSOR WITH ROTOR SYNCHRONIZATION 审中-公开
公开(公告)号：WO2018093440A1
公开(公告)日：2018-05-24
申请号：PCT/US2017/049588
申请日：2017-08-31
申请人： CARRIER CORPORATION
发明人： SISHTLA, Vishnu M.
IPC分类号： F04C2/16
CPC分类号： F04C2/165 , F04C2240/402 , F04C2240/81
摘要： A compressor (20, 100, 200, 300) comprises: a housing (22); a first rotor (30) mounted for rotation about a first axis (500); a first motor (34) coupled to the first rotor to drive rotation of the first rotor about the first axis; a second rotor (32A) mounted for rotation about a second axis (502A) and enmeshed with the first rotor; a second motor (36A) coupled to the second rotor to drive rotation of the second rotor about the second axis; and means (60, 62A) for detecting a phase relationship between the first rotor and the second rotor.

3. 发明申请

WO2018089090A1 HYBRID BEARINGS 审中-公开
标题翻译：混合轴承
公开(公告)号：WO2018089090A1
公开(公告)日：2018-05-17
申请号：PCT/US2017/049585
申请日：2017-08-31
申请人： CARRIER CORPORATION
发明人： SISHTLA, Vishnu M. , JONSSON, Ulf J. , CHAUDHRY, Zaffir A.
IPC分类号： F16C33/62 , F16C33/38 , F16C19/16 , F16C33/30
摘要： A bearing (20; 150; 152) comprises: an inner race (26); an outer race (28); and a plurality of rolling elements (30). The inner race comprises a nitrogen-alloyed steel (40). The outer race comprises a steel (42) with lower nitrogen content than said nitrogen-alloyed steel.
摘要翻译：轴承（20; 150; 152）包括：内座圈（26）;内座圈外圈（28）; 和多个滚动元件（30）。内圈包含氮合金钢（40）。外圈包含氮含量低于所述氮合金钢的钢（42）。

4. 发明申请

WO2015148004A1 CHILLER COMPRESSOR ROLLING BEARINGS WITH SQUEEZE FILM DAMPERS 审中-公开
标题翻译：冷却器压缩机滚动轴承与SQUEEZE膜阻尼器
公开(公告)号：WO2015148004A1
公开(公告)日：2015-10-01
申请号：PCT/US2015/015782
申请日：2015-02-13
申请人： CARRIER CORPORATION
发明人： SISHTLA, Vishnu M.
IPC分类号： F25B31/02 , F04D17/12 , F04D29/049 , F04D29/66 , F25B1/053 , F16C27/04 , F04D29/059
CPC分类号： F04D29/059 , F04D17/10 , F04D17/122 , F04D25/06 , F04D29/053 , F04D29/284 , F04D29/4213 , F04D29/668 , F16C19/26 , F16C27/045 , F16C2360/44 , F25B1/053 , F25B1/10 , F25B25/005 , F25B31/008 , F25B40/02 , F25B41/04 , F25B43/003 , F25B2339/047 , F25B2341/0661 , F25B2400/13
摘要： A centrifugal compressor (22) comprises: a case (160) having a suction port (24) and a discharge port (26); an impeller (162, 164) mounted for rotation about an impeller axis (500) by a plurality of bearings (80, 82); and a motor (34) coupled to the impeller to drive rotation of the impeller about the impeller axis. The bearings each comprise: an inner race (200); an outer race (202); and rolling elements (204) between the inner race and outer race. T the bearings each comprising: an inner race (200); an outer race (202); and rolling elements (204) between the inner race and outer race. The outer race of each bearing is mounted for radial displacement relative to the case and is surrounded by an associated chamber (224); and the chambers are coupled to a port (92) on the compressor.
摘要翻译：离心压缩机（22）包括：具有吸入口（24）和排出口（26）的壳体（160）; 安装用于通过多个轴承（80,82）围绕叶轮轴线（500）旋转的叶轮（162,164）; 以及联接到叶轮以驱动叶轮围绕叶轮轴线的旋转的马达（34）。所述轴承各自包括：内圈（200）; 一个外线（202）; 以及内圈和外圈之间的滚动元件（204）。所述轴承各自包括：内座圈（200）; 一个外线（202）; 以及内圈和外圈之间的滚动元件（204）。每个轴承的外圈安装成相对于壳体的径向位移，并被相关联的腔室（224）包围; 并且所述室耦合到压缩机上的端口（92）。

5. 发明申请

WO2015122991A2 HOT GAS BYPASS FOR TWO-STAGE COMPRESSOR 审中-公开
标题翻译：两级压缩机的燃气旁路
公开(公告)号：WO2015122991A2
公开(公告)日：2015-08-20
申请号：PCT/US2015/011940
申请日：2015-01-20
申请人： CARRIER CORPORATION
发明人： SISHTLA, Vishnu M.
IPC分类号： F25B1/053
CPC分类号： F25B1/10 , F04D17/122 , F04D27/0215 , F04D27/0223 , F04D27/023 , F04D27/0238 , F04D29/441 , F25B1/053 , F25B41/04 , F25B49/02 , F25B2400/0403 , F25B2400/0411 , F25B2400/13 , F25B2400/23 , F25B2600/17 , F25B2600/2501 , F25B2700/151 , F25B2700/1931 , F25B2700/195 , F25B2700/197
摘要： A vapor compression system comprising a centrifugal compressor (22) having: an inlet (24); an outlet (26); a first impeller stage (28); a second impeller stage (30); and a motor (34) coupled to the first impeller stage and second impeller stage. A first heat exchanger (38) is downstream of the outlet along a refrigerant flowpath. An expansion device (56) and a second heat exchanger (64) are upstream of the inlet along the refrigerant flowpath. A bypass flowpath (120; 320) is positioned to deliver refrigerant from the compressor bypassing the first heat exchanger. A valve (128) is positioned to control flow through the bypass flowpath, wherein: the bypass flowpath extends from a first location (140) intermediate the inlet and outlet to a second location (142; 342) downstream of the first heat exchanger along the refrigerant flowpath.
摘要翻译：一种蒸气压缩系统，包括具有：入口（24）的离心压缩机（22）出口（26）; 第一叶轮台（28）; 第二叶轮台（30）; 和联接到第一叶轮级和第二叶轮级的马达（34）。第一热交换器（38）沿着制冷剂流动路径在出口的下游。膨胀装置（56）和第二热交换器（64）沿着制冷剂流动路径在入口的上游。旁路流路（120; 320）定位成从旁路第一热交换器的压缩机输送制冷剂。定位阀（128）以控制通过旁路流路的流量，其中：旁路流路从入口和出口之间的第一位置（140）延伸到第一热交换器下游的第二位置（142; 342），沿着第制冷剂流路。

6. 发明申请

WO2014179032A1 COMPRESSOR BEARING COOLING VIA PURGE UNIT 审中-公开
标题翻译：压缩机轴承通过冲压单元冷却
公开(公告)号：WO2014179032A1
公开(公告)日：2014-11-06
申请号：PCT/US2014/034097
申请日：2014-04-15
申请人： CARRIER CORPORATION
发明人： JONSSON, Ulf J. , SISHTLA, Vishnu M. , CHAUDHRY, Zaffir A.
IPC分类号： F25B1/053 , F25B31/00 , F25B1/04 , F25B49/00 , F25B9/00 , F25B43/04
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。

7. 发明申请

WO2021025851A1 AXIAL AND DOWNSTREAM COMPRESSOR ASSEMBLY 审中-公开
公开(公告)号：WO2021025851A1
公开(公告)日：2021-02-11
申请号：PCT/US2020/042759
申请日：2020-07-20
申请人： CARRIER CORPORATION
发明人： JOLY, Michael M. , HALBE, Chaitanya Vishwajit , SISHTLA, Vishnu M. , COUSINS, William T.
IPC分类号： F04D19/02 , F04D25/02 , F04D17/02
摘要： A refrigerant compressor assembly (20A, 20B, 20C) includes an axial compressor (22B, 22C, 22) that includes at least one axial stage. A downstream compressor (24) is located fluidly downstream of the axial compressor (22B, 22C, 22) and includes one of a mixed-flow impeller (46) or a centrifugal impeller (96). At least one motor (26, 27) is in driving engagement with at least one of the axial compressor (22B, 22C, 22) and the downstream compressor (24).

8. 发明申请

WO2019199962A1 COMPRESSOR HAVING EXTENDED RANGE AND STABILITY 审中-公开
公开(公告)号：WO2019199962A1
公开(公告)日：2019-10-17
申请号：PCT/US2019/026777
申请日：2019-04-10
申请人： CARRIER CORPORATION
发明人： JOLY, Michael M. , JONSSON, Ulf J. , COUSINS, William T. , SISHTLA, Vishnu M.
IPC分类号： F04D29/42 , F04D29/44
摘要： A ported shroud (60) for use in a compressor includes a body having a first end (42) and a second opposite end (46). The body is disposed concentrically about an axial passageway (50) and includes an inlet (40) for receiving a fluid flow formed adjacent the first end (42) and an outlet port (70) for discharging the fluid flow formed adjacent the second end (46). A toroidal volute (74) is disposed within the interior of the body and fluidly couples the inlet and the outlet.

9. 发明申请

WO2019023618A1 LUBRICATION SUPPLY SYSTEM 审中-公开
公开(公告)号：WO2019023618A1
公开(公告)日：2019-01-31
申请号：PCT/US2018/044158
申请日：2018-07-27
申请人： CARRIER CORPORATION
发明人： SISHTLA, Vishnu M. , NIEFORTH, Scott A.
IPC分类号： F04B39/02 , F04B53/18 , F25B1/053 , F25B31/00 , F16C33/66
摘要： A lubrication additive recovery system is provided for use with a vapor compression system. The vapor compression system includes a compressor having a bearing, a condenser and an evaporator. The lubrication additive recovery system includes a lubrication ring formed to define first and second through-holes, a first system by which a portion of a required supply of lubrication is drawn from the condenser and provided to the bearing through the first through-holes and a second system by which a remainder of the required supply of lubrication is recovered from the evaporator and provided along with compressor discharge gas to the bearing through the second through-holes.

10. 发明申请

WO2018111986A1 IMPELLER INTEGRATED MOTOR FOR CENTRIFUGAL COMPRESSOR 审中-公开
公开(公告)号：WO2018111986A1
公开(公告)日：2018-06-21
申请号：PCT/US2017/065991
申请日：2017-12-13
申请人： CARRIER CORPORATION
发明人： TANGUDU, Jagadeesh , SISHTLA, Vishnu M.
IPC分类号： F04D25/06 , F04D29/28 , F04D29/42
摘要： An impeller of a centrifugal compressor comprising an impeller body (54) rotatable about an impeller axis (l)and a motor operable to drive said impeller about said impeller axis. The motor includes a stator assembly (72) and a rotor assembly (76). The rotor assembly is associated with said impeller body.

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