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公开(公告)号：US11965514B2
公开(公告)日：2024-04-23
申请号：US17622941
申请日：2020-07-20
申请人： Carrier Corporation
CPC分类号： F04D17/025 , F04D19/024 , F04D25/02 , F04D29/321 , F04D29/284 , F05D2210/14 , F05D2250/51
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：US11808277B2
公开(公告)日：2023-11-07
申请号：US17960401
申请日：2022-10-05
申请人： Carrier Corporation
IPC分类号： F04D27/02 , F04D29/42 , F04D29/68 , F01D17/16 , F04D17/14 , F04D27/00 , F04D29/28 , F25B31/02
CPC分类号： F04D27/0207 , F01D17/162 , F04D17/14 , F04D27/001 , F04D27/009 , F04D27/0238 , F04D27/0246 , F04D29/284 , F04D29/4213 , F04D29/685 , F25B31/026
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.
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公开(公告)号：US11768014B2
公开(公告)日：2023-09-26
申请号：US17255908
申请日：2020-06-29
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla , Lei Yu
CPC分类号： F25B1/053 , F04D5/003 , F04D17/12 , F04D27/0207 , F04D27/0269 , F05D2260/80 , F05D2270/101
摘要： A coolant system includes a multistage compressor having a plurality of surge detection sensors. A condenser is connected to an outlet of the multistage compressor. An economizer is connected to an outlet of the condenser and has a gaseous coolant outlet and a liquid coolant outlet. The liquid coolant outlet is connected to a cooler and the gaseous coolant outlet is connected to a second or later stage of the multistage compressor via a controllable valve. A controller is communicatively coupled to the surge detection sensors and the controllable valve. The controller includes a non-transitory medium storing instructions for causing the controller to detect an occurrence of a surge and restricting a flow through the controllable valve until the surge has ceased.
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公开(公告)号：US11739766B2
公开(公告)日：2023-08-29
申请号：US17252769
申请日：2020-05-08
申请人： Carrier Corporation
CPC分类号： F04D29/441 , F04D17/10 , F04D29/083
摘要： A centrifugal compressor includes an impeller configured to drive fluid along a fluid flowpath via a plurality of discrete passages. Each of the discrete passages includes a discrete passage exit. A diffuser portion is disposed circumferentially about the impeller. The diffuser portion includes a plenum connected to each exit of the discrete passages via a plurality of diffuser inlets and an equalization plenum defined adjacent to the impeller. The equalization plenum is fluidly connected to each discrete passage exit via a corresponding slot.
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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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