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21. 发明授权

US12013160B2 Expansion valve performance monitoring in refrigeration system 有权
公开(公告)号：US12013160B2
公开(公告)日：2024-06-18
申请号：US17994484
申请日：2022-11-28
申请人： Hill Phoenix, Inc.
发明人： Naresh Kumar Krishnamoorthy , Shobin Balakrishnan
IPC分类号： F25B49/00 , F25B40/06 , F25B41/31 , G01M13/003
CPC分类号： F25B49/005 , F25B40/06 , F25B41/31 , G01M13/003 , F25B2341/064 , F25B2341/068 , F25B2600/2513 , F25B2700/15
摘要： A method of detecting electrical failure in a refrigeration system is provided. The method includes determining whether a present superheat of the refrigeration system is between a maximum superheat and a minimum superheat for the refrigeration system, the maximum superheat and the minimum superheat defining a normal operating range. The method also includes detecting an electrical property of an expansion valve assembly of the refrigeration system responsive to the superheat being outside the normal operating range. The method further includes determining whether the expansion valve assembly as experienced an electrical failure based on at least the electrical property. A signal indicating that the expansion valve has experienced an electrical failure is generated based on a determination that the expansion valve assembly has experienced the electrical failure.

22. 发明授权

US11953240B2 Reversible heat pump 有权
公开(公告)号：US11953240B2
公开(公告)日：2024-04-09
申请号：US17668109
申请日：2022-02-09
申请人： TRANE INTERNATIONAL INC.
发明人： Yves Jacques Raimbault , Qingnan Huang
IPC分类号： F25B30/02 , F25B13/00 , F25B29/00 , F25B40/06
CPC分类号： F25B30/02 , F25B13/00 , F25B29/003 , F25B40/06 , F25B2313/02731 , F25B2700/21152
摘要： There is disclosed a reversible heat pump system 100 and a method of operating a reversible heat pump system to control the temperature of a process fluid of a chiller system 500. In a cooling mode, a working fluid is circulated for co-current flow with a process fluid at a heat exchanger 104 functioning as an evaporator heat exchanger, whereas in a heating mode, the working fluid is circulated for counter-current flow with the process fluid at the same heat exchanger 104 functioning as a condenser heat exchanger.

23. 发明公开

US20230392842A1 System and Method for Superheat Regulation and Efficiency Improvement 审中-公开
公开(公告)号：US20230392842A1
公开(公告)日：2023-12-07
申请号：US18236323
申请日：2023-08-21
申请人： Mohamad Yehia Marwan Itani
发明人： Mohamad Yehia Marwan Itani
IPC分类号： F25B49/00 , F25B40/06
CPC分类号： F25B49/005 , F25B40/06 , F25B2341/064 , F25B2400/0401 , F25B2400/0419
摘要： A refrigeration system includes a heat exchanger configured to provide superheat control for the low temperature low pressure gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger by transferring heat from the high pressure high temperature superheated gas refrigerant flowing through a second side of the heat exchanger. A modulating solenoid valve is located at the inlet of the second side of the heat exchanger and configured to modulate the flow of high pressure high temperature superheated gas refrigerant flowing through the second side of the heat exchanger. A temperature sensor is located in such a way as to measure the temperature of the gas refrigerant flowing out of the evaporator and through the first side of the heat exchanger. A controller is configured to calculate the superheat of the gas refrigerant based on the measured temperature and measured pressure of the gas refrigerant and may compare the calculated superheat to a superheat threshold. If the calculated superheat is less than the superheat threshold, the controller will modulate the flow the high pressure high temperature gas refrigerant flowing through the second side of the heat exchanger. The refrigeration system may be activated in a variety of methods by appropriate control of the valves and other system components.

24. 发明公开

US20230160615A1 Expansion Valve Performance Monitoring in Refrigeration System 审中-公开
公开(公告)号：US20230160615A1
公开(公告)日：2023-05-25
申请号：US17994484
申请日：2022-11-28
申请人： Hill Phoenix, Inc.
发明人： Naresh Kumar Krishnamoorthy , Shobin Balakrishnan
IPC分类号： F25B49/00 , F25B40/06 , G01M13/003 , F25B41/31
CPC分类号： F25B49/005 , F25B40/06 , G01M13/003 , F25B41/31 , F25B2341/068 , F25B2600/2513 , F25B2341/064 , F25B2700/15
摘要： A method of detecting electrical failure in a refrigeration system is provided. The method includes determining whether a present superheat of the refrigeration system is between a maximum superheat and a minimum superheat for the refrigeration system, the maximum superheat and the minimum superheat defining a normal operating range. The method also includes detecting an electrical property of an expansion valve assembly of the refrigeration system responsive to the superheat being outside the normal operating range. The method further includes determining whether the expansion valve assembly as experienced an electrical failure based on at least the electrical property. A signal indicating that the expansion valve has experienced an electrical failure is generated based on a determination that the expansion valve assembly has experienced the electrical failure.

25. 发明授权

US11629892B1 Thermal management systems 有权
公开(公告)号：US11629892B1
公开(公告)日：2023-04-18
申请号：US16872592
申请日：2020-05-12
申请人： Booz Allen Hamilton Inc.
发明人： Igor Vaisman , Joshua Peters , Jacob Swain
IPC分类号： F25B19/00 , F25B25/00 , F25B25/02 , F25B40/06 , F25B43/00 , F25B45/00 , F25B37/00
摘要： A thermal management system includes a refrigerant receiver configured to store a refrigerant fluid, an evaporator arrangement that removes heat from a heat load converting a portion of the refrigerant fluid to refrigerant vapor and a liquid separator having an inlet, a liquid side outlet, and a vapor side outlet. The system also includes a pump that pumps refrigerant liquid received from the liquid side outlet of the liquid separator and a closed-circuit refrigeration system having a closed-circuit fluid path that includes the refrigerant receiver, the liquid separator, the pump, and the evaporator arrangement, the closed-circuit refrigeration system further including a compressor and a condenser. The system also including an open-circuit refrigeration system having an open-circuit fluid path that includes the refrigerant receiver, the liquid separator, the pump, and the evaporator arrangement, and further including a back-pressure regulator configured to receive refrigerant vapor from the vapor side outlet of the liquid separator and an exhaust line coupled to the outlet of the back-pressure regulator, with refrigerant vapor from the exhaust line not returning to the refrigerant receiver.

26. 发明授权

US11618693B2 Multimode system for cooling and desalination 有权
公开(公告)号：US11618693B2
公开(公告)日：2023-04-04
申请号：US17517478
申请日：2021-11-02
申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
发明人： Yousif M. Alkhulaifi , Fahad A. Al-Sulaiman , Nasiru I. Ibrahim , Ridha Ben Mansour
IPC分类号： C02F1/16 , F25B41/20 , F25B40/06 , B01D5/00 , B01D1/16 , C02F103/08
摘要： A multimode system for cooling and desalination includes a humidification-dehumidification (HDH) system, an ejector cooling cycle (ECC) system and valves. The HDH system includes a heater, a humidifier and a dehumidifier. The ECC system includes a generator, an evaporator, an ejector and a condenser. The valves are configured to connect to inlets and outlets of the heater, the generator and a heat source so that by selectively opening and closing the valves, the heat source is connected to the heater while disconnected from the generator, or connected to the generator while disconnected from the heater, or connected to both the heater and the generator, or disconnected from both the heater and the generator. The ECC system and the HDH system are connected at the condenser for heat exchange.

27. 发明申请

US20220412622A1 REFRIGERATION CYCLE APPARATUS 有权
公开(公告)号：US20220412622A1
公开(公告)日：2022-12-29
申请号：US17780743
申请日：2020-02-03
申请人： Mitsubishi Electric Corporation
发明人： Takanori KOIKE , Koji AZUMA , Naomichi TAMURA
IPC分类号： F25B49/02 , F25B13/00 , F25B40/06 , F25B41/34
摘要： A refrigeration cycle apparatus includes; a refrigerant circuit in which a compressor, a heat-source-side heat exchanger, a first expansion device, a second expansion device, and a load-side heat exchanger are sequentially connected by refrigerant pipes and in which refrigerant is circulated; a controller that controls the refrigerant circuit; a bypass pipe extending from a liquid pipe between the first expansion device and the second expansion device toward a suction side of the compressor; a third expansion device provided at the bypass pipe to decompress the refrigerant that flows through the bypass pipe; and a refrigerant cooler provided at the bypass pipe and downstream of the third expansion device to cause heat exchange to be performed between the refrigerant decompressed by the third expansion device and heat generated from the controller.

28. 发明授权

US11530854B2 Ejector refrigeration cycle 有权
公开(公告)号：US11530854B2
公开(公告)日：2022-12-20
申请号：US16743804
申请日：2020-01-15
申请人： DENSO CORPORATION
发明人： Hiroshi Maeda , Hiroshi Oshitani , Yoichiro Kawamoto , Yohei Nagano , Daisuke Sakurai , Masahiro Ito , Hang Yuan
IPC分类号： F25B5/02 , F25B1/06 , F25B41/00 , F25B9/08 , F25B40/06 , F25B41/40
摘要： An ejector refrigeration cycle includes a compressor, a radiator, a branch portion, an ejector, a suction side decompressor, a windward evaporator, and a leeward evaporator. The ejector includes a nozzle portion and a pressure increasing portion. The windward evaporator and the leeward evaporator include at least one outflow side evaporation portion. The leeward evaporator includes a suction side evaporation portion. An outflow side evaporation temperature is a refrigerant evaporation temperature in the at least one outflow side evaporation portion of the leeward evaporator. A suction side evaporation temperature is a refrigerant evaporation temperature in the suction side evaporation portion of the leeward evaporator. At least one of the nozzle portion or the suction side decompressor is configured to adjust a refrigerant passage area such that a temperature difference between the outflow side evaporation temperature and the suction side evaporation temperature is at or below a predetermined reference temperature difference.

29. 发明申请

US20220128272A1 HEATING AND REFRIGERATION SYSTEM 有权
公开(公告)号：US20220128272A1
公开(公告)日：2022-04-28
申请号：US17508937
申请日：2021-10-22
申请人： Illuminated Extractors, Ltd.
发明人： Zachary Richard Lantz
IPC分类号： F25B1/10 , F25B41/22 , F25B40/02 , F25B40/06 , F25B39/04 , F25B39/02
摘要： Apparatus and method for heating and cooling a refrigerant are described. The refrigerant, which may be contained in the core of a jacketed container, is cooled by depressurization and evaporation of a portion of the refrigerant also contained in the jacket of the container. The vapor resulting from the evaporation is directed to the inlet of a compressor for pressurizing the vapor, which is then passed through a condenser where heat is removed causing the high-pressure refrigerant vapor to transition to hot vapor, warm liquid, and cold vapor. Heat generated by compression of the hydrocarbon refrigerant vapor to a state of super-heated vapor may be directed to the jacket of a vessel requiring heating.

30. 发明申请

US20210285693A1 LUBRICANT MANAGEMENT FOR AN HVACR SYSTEM 有权
公开(公告)号：US20210285693A1
公开(公告)日：2021-09-16
申请号：US17334295
申请日：2021-05-28
申请人： TRANE INTERNATIONAL INC.
发明人： Thibaut Gerson
IPC分类号： F25B9/00 , F25B40/06 , F25B49/02 , F25B31/00
摘要： Systems and methods for lubricant management of a compressor in an HVACR system are disclosed. A heat transfer circuit can utilize a working fluid to provide heating or cooling includes a compressor for compressing the working fluid and a heat source configured to increase a suction temperature of the working fluid entering the compressor. One or more lubricant rheological properties in a compressor system based on measurements taken at or near a bearing cavity of the compressor are determinable. A lubricant reservoir can be in thermal communication with a discharge flow path of the compressor. An internal heat exchanger can be disposed within a compressor for improving viscosity of the lubricant to be cycled back into the compressor. A heater can be located on a fluid line between a lubricant separator and a lubricant inlet. Condenser fans can be controlled.

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