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公开(公告)号：US11585347B2
公开(公告)日：2023-02-21
申请号：US17254510
申请日：2020-05-15
申请人： Carrier Corporation
发明人： Michael M. Joly , Vishnu M. Sishtla
摘要： A centrifugal compressor includes a casing. An impeller is arranged within the casing. The impeller is rotatable about an axis. A diffuser section is arranged within the casing. The diffuser section is positioned axially downstream from an outlet of the impeller and includes a forward portion fixed relative to the impeller and an aft portion distinct from the forward portion.
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公开(公告)号：US11187249B2
公开(公告)日：2021-11-30
申请号：US16074326
申请日：2017-01-23
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla , Kai Deng , Zhanbo Du
摘要： The present invention provides a silencer, including: a silencer housing having an annular plate-like structure, with an annular mounting chamber formed therein; a silencing pad disposed in the mounting chamber; and a positioning portion disposed on the silencer housing and used for fastening the silencer housing. The silencer according to the embodiment of the present invention has an integrated structure, and can desirably avoid the problem of mounting unflatness in a separated structure. Moreover, the silencing pad therein is disposed to surround the entire silencer, which can provide a sound absorption and noise reduction effect more efficiently.
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公开(公告)号：US20210364209A1
公开(公告)日：2021-11-25
申请号：US17045861
申请日：2019-04-08
申请人： CARRIER CORPORATION
摘要： A method of operating a heat exchanger system in which a compressor, which is drivable by a motor, is fluidly interposed between an evaporator and a condenser following receipt of a shutdown command is provided. The method includes positioning inlet guide vanes (IGVs) of the compressor in a first position in the event of at least one of a first precondition being in effect and the first and a second precondition both not being in effect. The method further includes positioning the IGVs in a second position in an event the first precondition is not in effect but the second precondition is in effect, ramping a speed of the compressor down until a third precondition takes effect, removing power from the motor and positioning the IGVs in the first position once power is removed from the motor.
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公开(公告)号：US11053950B2
公开(公告)日：2021-07-06
申请号：US16280346
申请日：2019-02-20
申请人： Carrier Corporation
摘要： A centrifugal compressor impeller (60; 160) has a hub (62; 162) having a gaspath surface (64; 164) extending from a leading end to a trailing end. A plurality of blades (70A, 70B; 170) extend from the hub gaspath surface and each have: a leading edge (72A, 72B; 172); a trailing edge (74A, 74B; 174); a first face (80A, 80B; 180); a second face (82A, 82B; 182); and a tip (78A, 78B; 178). A plurality of flow splitter segments (120, 122; 320, 322) extend between associated twos of the blades and each spaced from both the hub gaspath surface and the tips of the associated two blades.
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公开(公告)号：US20210164489A1
公开(公告)日：2021-06-03
申请号：US17045054
申请日：2019-04-10
申请人： Carrier Corporation
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.
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公开(公告)号：US20210123444A1
公开(公告)日：2021-04-29
申请号：US17254510
申请日：2020-05-15
申请人： Carrier Corporation
发明人： Michael M. Joly , Vishnu M. Sishtla
摘要： A centrifugal compressor includes a casing. An impeller is arranged within the casing. The impeller is rotatable about an axis. A diffuser section is arranged within the casing. The diffuser section is positioned axially downstream from an outlet of the impeller and includes a forward portion fixed relative to the impeller and an aft portion distinct from the forward portion.
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公开(公告)号：US10968919B2
公开(公告)日：2021-04-06
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.
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公开(公告)号：US20200256352A1
公开(公告)日：2020-08-13
申请号：US16778729
申请日：2020-01-31
申请人： Carrier Corporation
IPC分类号： F04D29/44 , F04D17/10 , F04D29/059
摘要： A centrifugal compressor includes a shaft defining an axis, an impeller mounted to the shaft for rotation about the axis, and a diffuser section including a first wall, a second wall, and an opening defined between the first wall and the second wall. The opening of the diffuser section is arranged in fluid communication with the impeller. The first wall is rotatable about the axis and rotation of the first wall about the axis is mechanically driven.
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公开(公告)号：US20200040942A1
公开(公告)日：2020-02-06
申请号：US16339116
申请日：2017-08-31
申请人： Carrier Corporation
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.
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公开(公告)号：US10539352B2
公开(公告)日：2020-01-21
申请号：US14784478
申请日：2014-04-15
申请人： Carrier Corporation
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.
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