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1. 发明公开

US20240219080A1 CO2 REFRIGERATION SYSTEM WITH MAGNETIC REFRIGERATION SYSTEM COOLING 审中-公开
公开(公告)号：US20240219080A1
公开(公告)日：2024-07-04
申请号：US18602183
申请日：2024-03-12
申请人： Hill Phoenix, Inc.
发明人： Jeffrey E. Newel , John D. Bittner , Niel M. Hayes
IPC分类号： F25B25/00 , F25B9/00 , F25B21/00 , F25B41/40
CPC分类号： F25B25/00 , F25B9/008 , F25B21/00 , F25B41/40 , F25B2321/002 , F25B2400/0403 , F25B2400/05 , F25B2500/09 , F25B2500/18 , F25B2600/2501 , F25B2600/2513 , F25B2600/2515
摘要： A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.

2. 发明授权

US10663201B2 CO2 refrigeration system with supercritical subcooling control 有权
公开(公告)号：US10663201B2
公开(公告)日：2020-05-26
申请号：US16167763
申请日：2018-10-23
申请人： Hill Phoenix, Inc.
发明人： Niel M. Hayes
IPC分类号： F25B49/02 , F25B41/04 , F25B9/00 , F25B40/02 , F25B40/06 , F25B41/06 , F25B1/10
摘要： A refrigeration system includes a gas cooler/condenser configured to remove heat from a refrigerant, a temperature sensor configured to measure a temperature of the refrigerant leaving the gas cooler/condenser, a pressure sensor located along the high pressure conduit and configured to measure a pressure of the refrigerant leaving the gas cooler/condenser, a pressure control valve operable to regulate the pressure of the refrigerant leaving the gas cooler/condenser, and a controller. The controller is configured to determine whether the refrigerant leaving the gas cooler/condenser is in a subcritical region based on at least one of the measured temperature of the refrigerant or the measured pressure of the refrigerant. If the refrigerant leaving the gas cooler/condenser is not in the subcritical region, the controller is configured to add a pseudo-subcooling temperature value to the measured temperature of the refrigerant to calculate a summed temperature, calculate a supercritical pseudo-saturated pressure as a function of the summed temperature, and operate the pressure control valve to drive the pressure of the refrigerant leaving the gas cooler/condenser to the supercritical pseudo-saturated pressure corresponding to the summed temperature.

3. 发明申请

US20200124330A1 CO2 REFRIGERATION SYSTEM WITH SUPERCRITICAL SUBCOOLING CONTROL 审中-公开
公开(公告)号：US20200124330A1
公开(公告)日：2020-04-23
申请号：US16167763
申请日：2018-10-23
申请人： Hill Phoenix, Inc.
发明人： Niel M. Hayes
IPC分类号： F25B49/02 , F25B1/10 , F25B9/00 , F25B40/02 , F25B40/06 , F25B41/04 , F25B41/06
摘要： A refrigeration system includes a gas cooler/condenser configured to remove heat from a refrigerant, a temperature sensor configured to measure a temperature of the refrigerant leaving the gas cooler/condenser, a pressure sensor located along the high pressure conduit and configured to measure a pressure of the refrigerant leaving the gas cooler/condenser, a pressure control valve operable to regulate the pressure of the refrigerant leaving the gas cooler/condenser, and a controller. The controller is configured to determine whether the refrigerant leaving the gas cooler/condenser is in a subcritical region based on at least one of the measured temperature of the refrigerant or the measured pressure of the refrigerant. If the refrigerant leaving the gas cooler/condenser is not in the subcritical region, the controller is configured to add a pseudo-subcooling temperature value to the measured temperature of the refrigerant to calculate a summed temperature, calculate a supercritical pseudo-saturated pressure as a function of the summed temperature, and operate the pressure control valve to drive the pressure of the refrigerant leaving the gas cooler/condenser to the supercritical pseudo-saturated pressure corresponding to the summed temperature.

4. 发明申请

US20220357081A1 CO2 REFRIGERATION SYSTEM WITH MAGNETIC REFRIGERATION SYSTEM COOLING 有权
公开(公告)号：US20220357081A1
公开(公告)日：2022-11-10
申请号：US17872512
申请日：2022-07-25
申请人： Hill Phoenix, Inc.
发明人： Jeffrey E. Newel , John D. Bittner , Niel M. Hayes
IPC分类号： F25B25/00 , F25B9/00 , F25B21/00
摘要： A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.

5. 发明申请

US20210396433A1 CO2 Refrigeration System with Automated Control Optimization 有权
公开(公告)号：US20210396433A1
公开(公告)日：2021-12-23
申请号：US17464321
申请日：2021-09-01
申请人： Hill Phoenix, Inc.
发明人： Niel M. Hayes , Jeffrey E. Newel
IPC分类号： F25B9/00 , F25B1/10 , F25B49/02 , F25B41/20
摘要： A refrigeration system includes a receiver, a gas bypass valve, a parallel compressor, and a controller. The gas bypass valve and the parallel compressor are fluidly coupled to an outlet of the receiver in parallel and configured to control a pressure of a gas refrigerant in the receiver. The controller is configured to switch from operating the gas bypass valve to operating the parallel compressor to control the pressure of the gas refrigerant in the receiver in response to a value of a process variable crossing a switchover setpoint. The value of the process variable depends on an amount of the gas refrigerant produced by the refrigeration system. The controller is configured to automatically adjust the switchover setpoint in response to the amount of the gas refrigerant produced by the refrigeration system being insufficient to sustain operation of the parallel compressor.

6. 发明授权

US11940186B2 CO 有权
公开(公告)号：US11940186B2
公开(公告)日：2024-03-26
申请号：US17872512
申请日：2022-07-25
申请人： Hill Phoenix, Inc.
发明人： Jeffrey E. Newel , John D. Bittner , Niel M. Hayes
IPC分类号： F25B25/00 , F25B9/00 , F25B21/00 , F25B41/40
CPC分类号： F25B25/00 , F25B9/008 , F25B21/00 , F25B41/40 , F25B2321/002 , F25B2400/0403 , F25B2400/05 , F25B2500/09 , F25B2500/18 , F25B2600/2501 , F25B2600/2513 , F25B2600/2515
摘要： A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.

7. 发明授权

US11674719B2 CO 有权
公开(公告)号：US11674719B2
公开(公告)日：2023-06-13
申请号：US17464321
申请日：2021-09-01
申请人： Hill Phoenix, Inc.
发明人： Niel M. Hayes , Jeffrey E. Newel
IPC分类号： F25B49/02 , F25B9/00 , F25B1/10 , F25B41/20 , F25B5/02
CPC分类号： F25B9/008 , F25B1/10 , F25B41/20 , F25B49/02 , F25B49/022 , F25B49/027 , F25B5/02 , F25B2400/075 , F25B2500/19 , F25B2600/01 , F25B2600/0251 , F25B2600/111 , F25B2600/2501 , F25B2700/2106 , F25B2700/21161 , F25B2700/21163
摘要： A refrigeration system includes a receiver, a gas bypass valve, a parallel compressor, and a controller. The gas bypass valve and the parallel compressor are fluidly coupled to an outlet of the receiver in parallel and configured to control a pressure of a gas refrigerant in the receiver. The controller is configured to switch from operating the gas bypass valve to operating the parallel compressor to control the pressure of the gas refrigerant in the receiver in response to a value of a process variable crossing a switchover setpoint. The value of the process variable depends on an amount of the gas refrigerant produced by the refrigeration system. The controller is configured to automatically adjust the switchover setpoint in response to the amount of the gas refrigerant produced by the refrigeration system being insufficient to sustain operation of the parallel compressor.

8. 发明申请

US20190212043A1 REFRIGERATION SYSTEM AND METHOD FOR AUTOMATED CHARGING AND START-UP CONTROL 审中-公开
公开(公告)号：US20190212043A1
公开(公告)日：2019-07-11
申请号：US16295534
申请日：2019-03-07
申请人： Hill Phoenix, Inc.
发明人： Matthew W. Walden , Thomas W. Bradshaw , Peter J. Ferretti , Niel M. Hayes , Senthilkumar Kandappa Goundar Shanmugam
IPC分类号： F25B45/00 , F25B49/02 , F25B41/06 , F25B41/04
CPC分类号： F25B45/00 , F25B41/04 , F25B41/062 , F25B49/02 , F25B49/022 , F25B2345/003 , F25B2400/075 , F25B2400/19 , F25B2500/24 , F25B2500/26 , F25B2600/23 , F25B2600/2513 , F25B2600/2523 , F25B2700/15 , F25B2700/1933 , F25B2700/21151 , F25B2700/21163
摘要： A system for starting a refrigeration system includes a liquid line regulating valve, a liquid line charging valve, a suction line expansion valve, a suction line charging valve, and a controller. The controller is configured to override normal operation of the refrigeration system and transmit a demand signal to enable partial system operation. The controller is configured to operate the liquid line regulating valve and the liquid line charging valve to charge a receiver tank, gradually increase the demand signal to a predetermined level of partial system operation, and release the liquid line charging valve to normal operation. The controller is configured to operate the suction line expansion valve and the suction line charging valve to charge a suction line, gradually increase the demand signal to full system operation, and release the liquid line regulating valve, the suction line expansion valve, and the suction line charging valve to normal operation.

9. 发明授权

US11353246B2 CO2 refrigeration system with automated control optimization 有权
公开(公告)号：US11353246B2
公开(公告)日：2022-06-07
申请号：US16429478
申请日：2019-06-03
申请人： Hill Phoenix, Inc.
发明人： Niel M. Hayes , Jeffrey E. Newel
IPC分类号： F25B9/00 , F25B1/10 , F25B49/02 , F25B41/20
摘要： A refrigeration system includes a receiver, a gas bypass valve, a parallel compressor, and a controller. The gas bypass valve and the parallel compressor are fluidly coupled to an outlet of the receiver in parallel and configured to control a pressure of a gas refrigerant in the receiver. The controller is configured to switch from operating the gas bypass valve to operating the parallel compressor to control the pressure of the gas refrigerant in the receiver in response to a value of a process variable crossing a switchover setpoint. The value of the process variable depends on an amount of the gas refrigerant produced by the refrigeration system. The controller is configured to automatically adjust the switchover setpoint in response to the amount of the gas refrigerant produced by the refrigeration system being insufficient to sustain operation of the parallel compressor.

10. 发明授权

US11022356B2 Refrigeration system and method for automated charging and start-up control 有权
公开(公告)号：US11022356B2
公开(公告)日：2021-06-01
申请号：US16295534
申请日：2019-03-07
申请人： Hill Phoenix, Inc.
发明人： Matthew W. Walden , Thomas W. Bradshaw , Peter J. Ferretti , Niel M. Hayes , Senthilkumar Kandappa Goundar Shanmugam
IPC分类号： F25B45/00 , F25B49/02 , F25B41/20 , F25B41/31
摘要： A system for starting a refrigeration system includes a liquid line regulating valve, a liquid line charging valve, a suction line expansion valve, a suction line charging valve, and a controller. The controller is configured to override normal operation of the refrigeration system and transmit a demand signal to enable partial system operation. The controller is configured to operate the liquid line regulating valve and the liquid line charging valve to charge a receiver tank, gradually increase the demand signal to a predetermined level of partial system operation, and release the liquid line charging valve to normal operation. The controller is configured to operate the suction line expansion valve and the suction line charging valve to charge a suction line, gradually increase the demand signal to full system operation, and release the liquid line regulating valve, the suction line expansion valve, and the suction line charging valve to normal operation.

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