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公开(公告)号：US20240151437A1
公开(公告)日：2024-05-09
申请号：US17980934
申请日：2022-11-04
申请人： Hill Phoenix, Inc.
摘要： A refrigeration system includes a receiver, a gas bypass valve, a medium temperature subsystem, a first valve system, a second valve system, and a controller. The gas bypass valve is operable to control a pressure of the refrigerant in the receiver. The medium temperature subsystem includes one or more expansion valves, one or more medium temperature evaporators, and a suction group including two or more transcritical compressors operable to compress gas refrigerant and discharge the compressed gas refrigerant into a discharge line. The first valve system is fluidly coupled to a first one of the transcritical compressors. The second valve system is fluidly coupled to a second one of the transcritical compressors. The controller is configured to activate each of the first and second transcritical compressors to operate as a parallel compressor by modulating its valve system to switch a suction input of the transcritical compressor from an evaporator outlet of the one or more medium temperature evaporators to the outlet of the receiver.
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公开(公告)号：US20240110736A1
公开(公告)日：2024-04-04
申请号：US17957281
申请日：2022-09-30
申请人： Hill Phoenix, Inc.
IPC分类号： F25B41/20
CPC分类号： F25B41/20
摘要： A refrigeration system having a primary receiver, a secondary receiver, a first gas bypass valve, and second gas bypass valve, a feed control valve, and a controller. The primary receiver has a primary receiver operating pressure and is configured to collect a refrigerant circulated by the refrigeration system. The secondary receiver includes a liquid refrigerant inlet fluidly coupled to a primary receiver liquid refrigerant outlet. The feed control valve is coupled between the primary receiver liquid outlet and the secondary receiver liquid refrigerant inlet. The controller operates the feed control valve to control a flow of a liquid refrigerant from the primary receiver to the secondary receiver.
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