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公开(公告)号：US12066220B2
公开(公告)日：2024-08-20
申请号：US17759848
申请日：2021-01-27
申请人： DAC Sp. z o.o.
摘要： A refrigeration unit with dynamic air cooling is described. It includes a centrifugal compressor with an electric drive, whose outlet is connected to a working element, whose outlet is connected to the inlet of a turbine. The turbine is connected to an electrical energy generator, where the outlet of the turbine is directed towards a wall-pipe heat exchanger. The heat exchanger is connected to a pump. Between the centrifugal compressor and the working element there is a pipe-wall exchanger of the air-air type, to which a fan is connected. The working element of the unit has a cylindrical hollow profile comprising helical recesses with a substantially oval shape.
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公开(公告)号：US11994321B2
公开(公告)日：2024-05-28
申请号：US17420370
申请日：2020-01-03
发明人： Kang P. Lee , Douglas S. Olsen , Brian Callan
CPC分类号： F25B31/026 , F25B1/047 , F25B1/053 , F25B31/002 , F25B31/008
摘要： The present disclosure relates to a new breed of high performance compressors and associated vapor compression systems that can be used in wide ranging refrigeration, cooling and heating applications with significantly increased compressor isentropic efficiency, motor efficiency, reliability and longevity of the motor, the compressor pump and the system as a whole, as well as COP, heating capacity, and SEER of the new vapor compression systems utilizing the new high performance compressors. The design philosophy and modifications to the current configuration of rolling piston rotary compressor to arrive at the high-performance version of the same type will be readily applicable to other types of vapor compression compressors with only minor changes opening the way for adoption of the new design philosophy by the entire compressor industry resulting in serious reduction of carbon footprint for air conditioners, heat pumps and refrigerators worldwide.
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公开(公告)号：US11835053B2
公开(公告)日：2023-12-05
申请号：US15734042
申请日：2019-08-08
申请人： Carrier Corporation
发明人： Jialong Wang , Qiang Chen , Guicai Zhang , Yun Li , Haitao Zhou , Zhen Jia , Chao Wang
CPC分类号： F04D27/001 , F04D17/10 , F04D27/02 , F25B1/053 , F25B49/022 , F25B2500/19 , F25B2700/151 , F25B2700/1931 , F25B2700/1933
摘要： A system for predicting a surge of a centrifugal refrigeration compressor including a signal capturing module for capturing at least two signals relevant to the centrifugal refrigeration compressor; a feature extracting module defining a window period for extracting data of the at least two signals, and defining at least two feature functions respectively acting on the data in the window period of the at least two signals; and, a feature analyzing and deducing module calculating a feature value for each of the signals to map a probability value of surge prediction for each of the signals, and concluding, based on the probability value of the surge prediction of each of the signals, a final probability value to determine whether or not the surge will occur to the centrifugal refrigeration compressor.
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公开(公告)号：US11815295B2
公开(公告)日：2023-11-14
申请号：US17633095
申请日：2020-07-08
发明人： Fabien Durand , Guillaume Delautre
CPC分类号： F25B1/053 , F25B1/10 , F25B9/06 , F25B11/04 , F25B31/026 , F25J1/005 , F25J1/0025 , F25J1/0204 , F25J1/0259 , F25J1/0261 , F25J1/0288 , F25J1/0296 , F25B2400/054 , F25B2400/072 , F25B2500/01
摘要： Low-temperature refrigeration device arranged in a frame and comprising a working circuit forming a loop and containing a working fluid, the working circuit forming a cycle comprising in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, the device comprising a refrigeration heat exchanger intended to extract heat from at least one member by exchanging heat with the working fluid, the mechanisms for cooling and reheating the working fluid comprising a common heat exchanger in which the working fluid transits in counter-flow in two separate transit portions of the working circuit, the compression mechanism comprising at least two compressors and at least one motor for driving the compressors, the working fluid expansion mechanism comprising at least one rotary turbine, the device comprising at least one drive motor comprising a drive shaft, one end of which drives a compressor and the other end of which is coupled to a turbine, the motor being attached to the frame at at least one fixed point, the common heat exchanger being attached to the frame at at least one fixed point, the two counter-flow transit portions of the common heat exchanger being orientated in a longitudinal direction of the frame, the drive shaft of the drive motor being orientated in a direction parallel or substantially parallel to the longitudinal direction and the turbine and the compressor being arranged relatively longitudinally such that the turbine is located longitudinally on the side corresponding to the relatively cold end of the common heat exchanger when the device is being operated and the compressor is located longitudinally on the side corresponding to the relatively hot end of the common heat exchanger when the device is being operated.
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公开(公告)号：US11428239B2
公开(公告)日：2022-08-30
申请号：US16485692
申请日：2018-02-22
发明人： Jun Koga , Ryosuke Suemitsu
摘要： A compressor suction pipe includes a bent portion at least including a first pipe segment on the most upstream side with respect to flow of a fluid to be compressed, a second pipe segment connected to a suction side of a compressor and extending in a direction different from the extension direction of the first pipe segment, and a third pipe segment disposed between the first pipe segment and the second pipe segment and extending in a direction different from the extension directions of the first and second pipe segments, and at least one partition extending at least from an intermediate portion of the first pipe segment at least to an intermediate portion of the second pipe segment in the bent portion and dividing an interior of the bent portion. The partition extends in a direction intersecting a virtual plane including an incircle that touches an axis of the first pipe segment on an upstream side of a downstream end of the first pipe segment and touches an axis of the second pipe segment.
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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：US11022355B2
公开(公告)日：2021-06-01
申请号：US15934687
申请日：2018-03-23
发明人： Florin V. Iancu , Justin P. Kauffman , Jeb W. Schreiber , Chenggang Wu , Steven Wang , John Trevino, Jr.
IPC分类号： F25B41/00 , F15D1/04 , F25B41/06 , F25B41/40 , F04D17/10 , F04D29/42 , F25B1/053 , F25B41/30
摘要： A compressor includes an inlet and the inlet includes a flange and an impeller eye. The flange is connected to a suction line that transfers a refrigerant into the compressor via the impeller eye. The refrigerant flows into the compressor with an amount of swirl and a pressure loss. The suction line includes a geometry that includes a constantly decreasing cross-sectional area in a direction towards the compressor. The geometry of the suction line is configured to reduce the amount of swirl and the pressure loss.
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公开(公告)号：US20210108843A1
公开(公告)日：2021-04-15
申请号：US16498953
申请日：2018-03-08
摘要： A refrigeration machine control device according to an embodiment of the present invention serves to control a turbo refrigeration machine and is equipped with a pressure reduction rate identification unit for identifying a pressure reduction rate at which foaming does not occur in an oil tank, and a pressure adjustment unit for adjusting the pressure of an evaporator on the basis of the identified pressure reduction rate. The pressure reduction rate identification unit is equipped with: a refrigerant precipitation gas volume calculation unit for calculating the volume of refrigerant gas precipitated from lubricating oil when the pressure is reduced at a prescribed pressure reduction rate; and a determination unit for determining whether or not foaming is permissible on the basis of a comparison between the calculated volume and the volume on the surface of the oil in the oil tank.
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公开(公告)号：US10962263B2
公开(公告)日：2021-03-30
申请号：US16320278
申请日：2017-08-09
申请人： Carrier Corporation
IPC分类号： F25B31/00 , F04D25/06 , F04D29/063 , F04D29/42 , F25B1/053
摘要： A vapor compression system (20, 400, 420, 440, 460, 480) has: a compressor (22) having a suction port (40) and a discharge port (42); a heat rejection heat exchanger (58) coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (88); a first lubricant flowpath (120, 126; 120) from the heat rejection heat exchanger to the compressor; a second lubricant flowpath (121, 126; 121) from the heat absorption heat exchanger to the compressor; at least one lubricant pump (190; 190, 191); at least one liquid level sensor (180, 181; 180, 181, 330); and a controller (900) configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on output of the at least one liquid level sensor.
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