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公开(公告)号：US20180355890A1
公开(公告)日：2018-12-13
申请号：US15735649
申请日：2016-07-21
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla
CPC分类号： F04D29/664 , F04D17/122 , F04D29/023 , F04D29/284 , F04D29/441 , F04D29/464 , F05D2250/52
摘要： A centrifugal compressor (20) comprises: a housing (26); an impeller (34) having an axial inlet (70) and a radial outlet (72); a diffuser (82); and a control ring (90) mounted for shifting between an inserted position and a retracted position. The control ring comprises means (150, 160, 162, 166) for absorbing pulsations.
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公开(公告)号：US20150377250A1
公开(公告)日：2015-12-31
申请号：US14768708
申请日：2014-02-20
申请人： CARRIER CORPORATION
发明人： Vishnu M. Sishtla
CPC分类号： F04D29/442 , F04D17/10 , F04D27/0246 , F04D29/444 , F04D29/462 , F05D2250/51 , F25B1/053 , F25B31/026 , F25B49/022
摘要： An inlet guide vane assembly (60) is provided including a plurality of vane subassemblies (62) configured to rotate relative to a blade ring housing (64) to control a volume of air flowing there through. The inlet guide vane assembly (60) also includes a plurality of drive mechanisms (80). Each drive mechanism (80) is operably coupled to one of the plurality of vane subassemblies (62). The vane subassemblies (62) may be rotated independently.
摘要翻译： 入口引导叶片组件（60）被设置成包括多个叶片组件（62），其构造成相对于叶片环壳体（64）旋转以控制在其中流过的空气的体积。 入口导叶组件（60）还包括多个驱动机构（80）。 每个驱动机构（80）可操作地联接到多个叶片组件（62）中的一个。 叶片组件（62）可以独立地旋转。
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公开(公告)号：US11655825B2
公开(公告)日：2023-05-23
申请号：US17407489
申请日：2021-08-20
申请人： CARRIER CORPORATION
CPC分类号： F04D27/0246 , F04D27/0238 , F04D29/462 , F04D17/10
摘要： An illustrative example embodiment of a compressor includes an inlet defining an intake passage, a plurality of inlet guide vanes, an impeller, and a plurality of swirl nozzles. Fluid flow through the plurality of inlet guide vanes into the intake passage is selectively adjustable to control fluid flow through at least the portion of the intake passage downstream of the swirl nozzles. The impeller includes a plurality of blades and directs fluid from the intake passage toward an outlet. The swirl nozzles have outlets positioned downstream of the plurality of inlet guide vanes and upstream of the impeller. The swirl nozzles are configured to introduce fluid into the intake passage to cause swirl of fluid in the intake passage between the plurality of inlet guide vanes and the impeller.
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公开(公告)号：US11603853B2
公开(公告)日：2023-03-14
申请号：US16973356
申请日：2019-09-06
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla
IPC分类号： F04D29/051 , F04D29/058 , F04D17/10
摘要： A method of controlling, by a controller for a compressor (200), pressure at plurality of magnetic motor thrust bearings (360, 370) for a motor (280) disposed within a housing (220) for the compressor (200), wherein the motor (280) and an impeller (270) are disposed on a compressor shaft (260) within the housing, the method including: monitoring current at each of the plurality of magnetic motor thrust bearings (360, 370), controlling a flow regulator (400) in a bypass loop (380) for the impeller (270) to decrease flow through the bypass loop when a first current in a first of the plurality of magnetic motor thrust bearings (360, 370) exceeds a second current in a second of the plurality of magnetic motor thrust bearings (360, 370), and controlling the flow regulator (400) to increase flow through the bypass loop (380) when the second current exceeds the first current.
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公开(公告)号：US20230039145A1
公开(公告)日：2023-02-09
申请号：US17877331
申请日：2022-07-29
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla , Emir Alemic
摘要： A compressor includes a housing having a suction inlet, at least one economizer inlet, and an outlet. A first cylinder arranged within the housing includes a first suction valve arranged in fluid communication with the suction inlet and a first discharge valve fluidly connected to the outlet. At least one second cylinder is arranged within the housing. The at least one second cylinder has a second suction valve in fluid communication with the at least one economizer inlet and a second discharge valve fluidly connected to the outlet. A first piston is arranged within the first cylinder and a second piston is arranged within the at least one second cylinder.
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公开(公告)号：US11421708B2
公开(公告)日：2022-08-23
申请号：US16243833
申请日：2019-01-09
申请人： Carrier Corporation
摘要： An impeller mountable within a centrifugal compressor includes a hub having a front side and a back side, the hub being rotatable about an axis of rotation and a plurality of vanes extending outwardly from the front side of the hub such that a plurality of passages is defined between adjacent vanes. The plurality of vanes is oriented such that a flow output from the plurality of passages adjacent the back side of the impeller is arranged at an angle to the axis of rotation of less than 20 degrees.
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公开(公告)号：US20220186985A1
公开(公告)日：2022-06-16
申请号：US17255908
申请日：2020-06-29
申请人： Carrier Corporation
发明人： Vishnu M. Sishtla , Lei Yu
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：US11306950B2
公开(公告)日：2022-04-19
申请号：US16624865
申请日：2018-07-27
申请人： Carrier Corporation
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.
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公开(公告)号：US11231214B2
公开(公告)日：2022-01-25
申请号：US16262201
申请日：2019-01-30
申请人： Carrier Corporation
摘要： A heating, ventilation, air conditioning and refrigeration system includes a heat transfer fluid circulation loop configured to circulate a refrigerant therethrough, a purge gas outlet in operable communication with the heat transfer fluid circulation loop and at least one gas permeable membrane having a first side in operable communication with the purge gas outlet and a second side. The membrane includes a plurality of pores of a size to allow passage of contaminants through the membrane, while restricting passage of the refrigerant through the membrane, and further restricting passage of a vapor phase corrosion inhibitor through the membrane. A purge unit is in operable communication with the second side of the permeable membrane configured to receive a purge gas from the permeable membrane.
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公开(公告)号：US20220010802A1
公开(公告)日：2022-01-13
申请号：US17482526
申请日：2021-09-23
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
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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