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公开(公告)号：US20230392846A1
公开(公告)日：2023-12-07
申请号：US18236286
申请日：2023-08-21
CPC分类号： F25B49/022 , F24F11/64 , F04D27/0246 , F04D27/0261 , F04D27/0284 , F05B2270/404 , F05B2270/709 , F25B2500/06 , F25B2500/12 , F25B2600/0253
摘要： A method of operating a chiller to avoid future surge events, the method comprises applying chiller operating data associated with a chiller as an input to one or more machine learning models; and generating a threshold for a controllable chiller variable to prevent a future chiller surge event from occurring based on an output of the one or more machine learning models, further comprising affecting operation of the chiller based on the threshold to prevent the future chiller surge event from occurring. The method enables automatic control of a chiller to avoid future chiller surge events.
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公开(公告)号：US20230392845A1
公开(公告)日：2023-12-07
申请号：US18063974
申请日：2022-12-09
IPC分类号： F25B49/02
CPC分类号： F25B49/022 , F25B2700/04 , F25B2700/193 , F25B2700/2115 , F25B2500/19
摘要： The present disclosure provides a system and a method for monitoring an operation of a vapor compression cycle. The method comprises collecting digital representation of observed variables of the operation of the vapor compression cycle over multiple instances of time and executing a constrained ensemble Kalman smoother for each instance of time to estimate the state variables of the vapor compression cycle for each instance of time. The constrained ensemble Kalman smoother updates the state variables over a sequence of time instances within a smoothing window by solving a series of constrained optimization problems in a range of a covariance, for which constraints are enforced for every variable in the smoothing window for every instance of the constrained optimization problems. The method further comprises outputting, based on the estimates of the state variables, estimates of variables of the vapor compression cycle at each instance of time.
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公开(公告)号：US11835291B2
公开(公告)日：2023-12-05
申请号：US17584624
申请日：2022-01-26
申请人： LG ELECTRONICS INC.
发明人： Seunguk Ahn , Sunam Chae , Kyunghun Cha
CPC分类号： F25D29/003 , F25B49/022 , F25D11/022 , F25D17/065 , F25D17/067 , F25D2317/0671 , F25D2317/0682 , F25D2700/121
摘要： The method for controlling the refrigerator includes operating a first cooling cycle for cooling the first storage compartment to operate the compressor and operating a first fan for the first storage compartment, and switching the first cooling cycle to a second cooling cycle for cooling the second storage compartment to operate the compressor and operating a second fan when a stop condition of the first cooling cycle is satisfied. A temperature of each storage compartment is sensed at sampling time intervals in each cooling cycle. Further, a cooling power of the compressor is determined for each sampling time based on a sensed current temperature of the storage compartment, and the compressor is operated at the determined cooling power.
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公开(公告)号：US11835288B2
公开(公告)日：2023-12-05
申请号：US17238364
申请日：2021-04-23
申请人： LG ELECTRONICS INC.
发明人： Kyungwon Kang
CPC分类号： F25D21/006 , F25B13/00 , F25B49/02
摘要： An air conditioner system is provided that may include an air conditioner including a compressor, an outdoor heat exchanger that performs heat exchange using refrigerant discharged from the compressor, a camera module that photographs the outdoor heat exchanger, a sensor unit including a plurality of sensors, and a communication unit that transmits an image of the outdoor heat exchanger photographed by the camera module and sensor data detected by the sensor unit, and a server including a communication unit that receives the image of the outdoor heat exchanger photographed by the camera module and the sensor data detected by the sensor unit, and a defrosting controller that determines whether the outdoor heat exchanger is frosted based on image data of the outdoor heat exchanger photographed by the camera module, and predicts a frosting timing based on the sensor data detected by the sensor unit.
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公开(公告)号：US11828510B2
公开(公告)日：2023-11-28
申请号：US17709842
申请日：2022-03-31
发明人： You Tomiyama
CPC分类号： F25B49/022 , F25B13/00 , F25B43/02
摘要： An air conditioning apparatus includes a refrigerant circuit, a suction temperature sensor, and a controller. In the refrigerant circuit, a compressor, a radiator, an expansion valve, an evaporator, and an accumulator are connected in order. The controller controls the number of revolutions of the compressor and the opening degree of the expansion valve. On determination that a refrigerant and a lubricating oil are separated inside the accumulator based on a detection result of the suction temperature sensor, the controller executes control of step to decrease the number of revolutions of the compressor, and executes control of step to set the opening degree of the expansion valve to a predetermined opening degree.
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96.发明授权公开(公告)号：US11828509B2
公开(公告)日：2023-11-28
申请号：US17689073
申请日：2022-03-08
发明人： David Pickett
摘要： A dynamic refrigeration system may include an ultrasonic transducer attached to a refrigerant flow sight glass, an expansion valve, and an evaporator coil in a refrigerant line. The ultrasonic transducer may be placed in a refrigerant flow of the refrigerant line before or after the expansion valve and before the evaporator coil, wherein sound waves of the ultrasonic transducer may break up large globules of refrigerant molecules into smaller globules of refrigerant molecules, thereby increasing total surface area of the refrigerant molecules to increase heat transfer capacity and total system efficiency. The system may provide 3-5 percent higher efficiency overall due to the presence of the ultrasonic transducer in the refrigerant line before or after the expansion valve.
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公开(公告)号：US20230366600A1
公开(公告)日：2023-11-16
申请号：US17743317
申请日：2022-05-12
CPC分类号： F25B49/022 , F25B31/026
摘要： Re-calibrating a bearing system of a compressor includes analyzing environmental data pertaining to a compressor to detect occurrence of a calibration threshold event, and re-calibrating the bearing system based on the detected calibration threshold event by controlling placement of a shaft relative to the bearing system of the compressor.
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98.发明公开公开(公告)号：US20230366598A1
公开(公告)日：2023-11-16
申请号：US18044627
申请日：2021-09-08
申请人： ADVANSOR A/S
CPC分类号： F25B41/39 , F25B49/02 , F25B9/008 , F25B2400/0409 , F25B2400/0411
摘要： A refrigeration system including one or more first compressor(s) for compressing a carbon dioxide (CO2) refrigerant, a main heat rejection system for cooling the CO2 refrigerant, one or more high pressure expansion device(s) for reducing the pressure of the CO2 refrigerant, a receiver for storing the CO2 refrigerant, one or more high pressure expansion device(s), an evaporator and a receiver pressure regulating device. The refrigeration system further includes an auxiliary refrigeration system including an auxiliary compressor arranged to compress at least part of the CO2 refrigerant and thereafter to direct the compressed CO2 refrigerant to a heat rejection system.
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公开(公告)号：US11815281B2
公开(公告)日：2023-11-14
申请号：US17262519
申请日：2018-09-26
IPC分类号： F24F11/85 , F24F1/32 , F25B49/02 , F24F11/83 , F24F11/84 , F24F140/12 , F24F140/20 , F25B25/00
CPC分类号： F24F11/85 , F24F1/32 , F24F11/83 , F24F11/84 , F25B49/02 , F25B49/022 , F24F2140/12 , F24F2140/20 , F25B25/005 , F25B2600/13 , F25B2600/2515
摘要： An air-conditioning device includes: a heat medium cycle circuit including: a pump, a plurality of indoor heat exchangers, and a plurality of flow control devices configured to control a flow rate of the heat medium through the heat medium cycle circuit; a heat-source-side device configured to heat or cool the heat medium; and a controller that includes a determination processing unit to determine whether the heat medium is caused to pass through the plurality of indoor heat exchangers where heat exchange is stopped, a selection processing unit to select, based on a determination from the determination processing unit, an indoor heat exchanger through which the heat medium is caused to pass from the plurality of indoor heat exchangers where heat exchange is stopped, and an instruction processing unit to instruct a release of a flow control device that corresponds to the indoor heat exchanger selected.
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公开(公告)号：US20230358450A1
公开(公告)日：2023-11-09
申请号：US18029219
申请日：2021-10-06
发明人： Ulrich HAFNER , Christopher WREDE
IPC分类号： F25B41/385 , F25B49/02 , F25B41/31 , F25B13/00
CPC分类号： F25B41/385 , F25B49/02 , F25B41/31 , F25B13/00 , F25B2600/2513 , F25B2700/171
摘要： A method of operating a refrigeration cycle apparatus uses a compressor to compress a coolant. The compressed coolant is fed to a condenser for release of heat, the condensed coolant is later fed to a primary side of an internal heat exchanger for release of heat, and the cooled coolant is guided through an expansion device. The coolant expanded in the expansion device is fed to an evaporator for absorption of heat, the evaporated coolant is later fed to a secondary side of the internal heat exchanger for absorption of heat, and the heated coolant is fed to the compressor. For suction gas temperature control, an amount of heat transferred from the primary side to the secondary side of the internal heat exchanger is controlled with the aid of an additional expansion device arranged parallel to the heat exchanger and between the condenser and the evaporator.
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