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公开(公告)号：US20230024289A1
公开(公告)日：2023-01-26
申请号：US17960898
申请日：2022-10-06
申请人： Carrier Corporation
发明人： Lei Yu , Vishnu M. Sishtla , Sheng Chen
摘要： A centrifugal compressor and a method of operating a centrifugal compressor. The centrifugal compressor includes: an impeller configured to suction a gas to be compressed; a diffuser disposed downstream of the impeller to pressurize the gas, the diffuser comprising a movable ring, a main passage in which the gas flows past the ring, and an openable branch passage; and a circulation loop comprising an inlet and an outlet, the outlet being in communication with an inlet of the impeller; the branch passage is disposed to be in communication with the main passage and the circulation loop when the ring moves into the main passage so that a portion of the gas in the main passage passes through the circulation loop and returns to the impeller so as to be suctioned, and to be closed when the ring is withdrawn from the main passage.
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公开(公告)号：US11555502B1
公开(公告)日：2023-01-17
申请号：US17401528
申请日：2021-08-13
申请人： CARRIER CORPORATION
IPC分类号： F04D27/00 , F02C6/12 , F04D29/56 , F04D27/02 , F04D29/46 , F02C7/042 , F04D15/00 , F04D29/42
摘要： An illustrative example embodiment of a compressor includes an inlet defining an intake passage, a plurality of lateral inlet guide vanes in the intake passage, and a plurality of medial inlet guide vanes in the intake passage. The lateral guide vanes are selectively oriented to alter an amount of fluid flow through a first, lateral portion of the intake passage. The medial inlet guide vanes are selectively oriented to alter an amount of fluid flow through a second, medial portion of the intake passage.
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公开(公告)号：US11499767B2
公开(公告)日：2022-11-15
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：US11499569B2
公开(公告)日：2022-11-15
申请号：US17254328
申请日：2020-06-16
申请人： Carrier Corporation
摘要： A compressor includes a housing. An impeller is located within the housing and rotatable about an impeller axis in a first rotational direction. A rotor section is rotatable about the impeller axis in a second rotational direction opposite the first rotational direction.
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公开(公告)号：US11493057B2
公开(公告)日：2022-11-08
申请号：US17106361
申请日：2020-11-30
申请人： Carrier Corporation
发明人： Lei Yu , Vishnu M. Sishtla , Sheng Chen
摘要： A centrifugal compressor and a method of operating a centrifugal compressor. The centrifugal compressor includes: an impeller configured to suction a gas to be compressed; a diffuser disposed downstream of the impeller to pressurize the gas, the diffuser comprising a movable ring, a main passage in which the gas flows past the ring, and an openable branch passage; and a circulation loop comprising an inlet and an outlet, the outlet being in communication with an inlet of the impeller; the branch passage is disposed to be in communication with the main passage and the circulation loop when the ring moves into the main passage so that a portion of the gas in the main passage passes through the circulation loop and returns to the impeller so as to be suctioned, and to be closed when the ring is withdrawn from the main passage.
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公开(公告)号：US20220255373A1
公开(公告)日：2022-08-11
申请号：US17255125
申请日：2020-06-25
申请人： Carrier Corporation
摘要： An electric compressor motor includes a stator ring having a plurality of stator winding slots and a plurality of stator windings. Each of said stator windings is received in a stator winding slot of the plurality of stator winding slots. The stator ring also includes a plurality of cooling slots. Each cooling slot in the plurality of coolant slots is defined along an axial length of at least one corresponding stator winding slot of the plurality of stator winding slots such that a shared opening between each stator winding slot and at least one corresponding coolant slot is defined. The cooling slots are configured to allow coolant to directly contact at least one stator winding in the corresponding at least one stator winding slot.
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公开(公告)号：US20220228593A1
公开(公告)日：2022-07-21
申请号：US17622941
申请日：2020-07-20
申请人： Carrier Corporation
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).
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公开(公告)号：US20220186744A1
公开(公告)日：2022-06-16
申请号：US17059029
申请日：2020-06-11
申请人： Carrier Corporation
发明人： Hang Zhao , Vishnu M. Sishtla
摘要： The present application discloses a diffuser system and a centrifugal compressor comprising the same. The diffuser system comprises: a passage through which a compressed gas is flowable; and a wall defining the passage, the wall comprising a movable part which is driven to enter the passage so as to change a flow area of the passage, wherein the movable part comprises an elastomer configured to expand to guide the flow of the compressed gas when at least a portion of the movable part enters the passage, and to retract when the movable part withdraws from the passage. The diffuser system involved in the present application re-orients a flow route of the compressed gas in the passage.
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公开(公告)号：US11293438B2
公开(公告)日：2022-04-05
申请号：US16469502
申请日：2017-12-13
申请人： Carrier Corporation
摘要： A screw compressor is provided including a casing having a suction port and a discharge port, a male rotor rotatable relative to the casing about a first axis, a female rotor rotatable relative to the casing about a second axis, and a magnetic gear system. The magnetic gear system includes a first magnetic gear associated with the male rotor and a second magnetic gear associated with the female rotor. The first magnetic gear and the second magnetic gear are positioned such that a magnetic field of the first magnetic gear interacts with the second magnetic gear to drive rotation of the female rotor about the second axis.
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公开(公告)号：US20210317837A1
公开(公告)日：2021-10-14
申请号：US17122138
申请日：2020-12-15
申请人： Carrier Corporation
发明人： Jun Cao , Vishnu M. Sishtla , Sheng Chen , Hao Zhao
摘要： The invention relates to a centrifugal compressor and a method of operating the same. A centrifugal compressor of the invention includes an impeller, a diffuser and a variable diffusion system, wherein the diffuser is disposed downstream of the impeller and has a respective diffuser frame that defines at least a channel through which the fluid flows from the impeller; moreover, the variable diffusion system comprises a movable body that is able to move relative to the channel and an electromagnetic actuating device, and the electromagnetic actuating device controls the movable body to move relative to the channel in an electromagnetic driving manner. The variable diffusion system of the centrifugal compressor in the invention is simple in implementation structure, low in cost, easy to operate and good in stability and reliability.
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