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公开(公告)号：US09664424B2
公开(公告)日：2017-05-30
申请号：US13706122
申请日：2012-12-05
申请人： Hill Phoenix, Inc. , Allen Phillips
CPC分类号： F25B43/02 , F25B7/00 , F25B9/002 , F25B25/005 , F25B31/004 , F25B2400/06 , F25B2600/21
摘要： A cascade refrigeration system including an upper portion having at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit having at least a compressor, a condenser, an expansion device, and an evaporator. An ammonia refrigerant which may have entrained oil from the compressor circulates within the refrigerant circuit. An oil recycling circuit removes some oil from the ammonia refrigerant for return to the compressor. An oil pot collects oil accumulated in the evaporator and an oil return line drains oil from the oil pot to an ammonia accumulator or directly to the compressor.
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公开(公告)号：US09657977B2
公开(公告)日：2017-05-23
申请号：US15243308
申请日：2016-08-22
申请人： Hill Phoenix, Inc.
CPC分类号： F25B43/02 , F25B7/00 , F25B9/002 , F25B25/005 , F25B31/004 , F25B43/003 , F25B43/006 , F25B49/02 , F25B2341/0016 , F25B2400/051 , F25B2400/23 , F25B2600/21 , F25B2700/03
摘要： A cascade refrigeration system includes an upper portion. The upper portion includes at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit, an ammonia refrigerant, an ammonia refrigerant accumulator, and an oil separation system. The refrigerant circuit includes at least a compressor, a condenser, an expansion device, and an evaporator. The ammonia refrigerant is configured for circulation within the refrigerant circuit. The ammonia refrigerant accumulator is configured to receive the ammonia refrigerant from the evaporator. The oil separation system is configured to remove oil from the ammonia refrigerant. The oil separation system includes an oil separator that is configured to remove oil from the ammonia refrigerant flowing from the compressor to the condenser, an oil drain pot that is configured to collect oil from the evaporator, and an oil reservoir that is configured to collect oil from the oil separator and the oil drain pot.
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公开(公告)号：US20130091891A1
公开(公告)日：2013-04-18
申请号：US13706122
申请日：2012-12-05
申请人： Hill Phoenix, Inc.
IPC分类号： F25B43/02
CPC分类号： F25B43/02 , F25B7/00 , F25B9/002 , F25B25/005 , F25B31/004 , F25B2400/06 , F25B2600/21
摘要： A cascade refrigeration system including an upper portion having at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit having at least a compressor, a condenser, an expansion device, and an evaporator. An ammonia refrigerant which may have entrained oil from the compressor circulates within the refrigerant circuit. An oil recycling circuit removes some oil from the ammonia refrigerant for return to the compressor. An oil pot collects oil accumulated in the evaporator and an oil return line drains oil from the oil pot to an ammonia accumulator or directly to the compressor.
摘要翻译： 一种级联制冷系统，包括具有至少一个模块化冷却器单元的上部，所述至少一个模块化冷却器单元向具有多个低温负载的低温子系统中的至少一个提供冷却，以及具有多个中等温度负载的中等温度子系统。 模块式冷水机组包括至少具有压缩机，冷凝器，膨胀装置和蒸发器的制冷剂回路。 可能来自压缩机的夹带油的氨制冷剂在制冷剂回路内循环。 油回收回路从氨制冷剂中除去一些油以返回压缩机。 油罐收集积聚在蒸发器中的油，并且回油管线将油从油罐排出到氨储存器或直接到压缩机。
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公开(公告)号：US20160363356A1
公开(公告)日：2016-12-15
申请号：US15243308
申请日：2016-08-22
申请人： Hill Phoenix, Inc.
CPC分类号： F25B43/02 , F25B7/00 , F25B9/002 , F25B25/005 , F25B31/004 , F25B43/003 , F25B43/006 , F25B49/02 , F25B2341/0016 , F25B2400/051 , F25B2400/23 , F25B2600/21 , F25B2700/03
摘要： A cascade refrigeration system includes an upper portion. The upper portion includes at least one modular chiller unit that provides cooling to at least one of a low temperature subsystem having a plurality of low temperature loads, and a medium temperature subsystem having a plurality of medium temperature loads. The modular chiller unit includes a refrigerant circuit, an ammonia refrigerant, an ammonia refrigerant accumulator, and an oil separation system. The refrigerant circuit includes at least a compressor, a condenser, an expansion device, and an evaporator. The ammonia refrigerant is configured for circulation within the refrigerant circuit. The ammonia refrigerant accumulator is configured to receive the ammonia refrigerant from the evaporator. The oil separation system is configured to remove oil from the ammonia refrigerant. The oil separation system includes an oil separator that is configured to remove oil from the ammonia refrigerant flowing from the compressor to the condenser, an oil drain pot that is configured to collect oil from the evaporator, and an oil reservoir that is configured to collect oil from the oil separator and the oil drain pot.
摘要翻译： 级联制冷系统包括上部。 上部部分包括至少一个模块式冷却器单元，其向具有多个低温负载的低温子系统和具有多个中等温度负载的中温子系统中的至少一个提供冷却。 模块式制冷机组包括制冷剂回路，氨制冷剂，氨制冷剂储液器和油分离系统。 制冷剂回路至少包括压缩机，冷凝器，膨胀装置和蒸发器。 氨制冷剂被配置为在制冷剂回路内循环。 氨制冷剂储液器构造成从蒸发器接收氨制冷剂。 油分离系统被构造成从氨制冷剂中除去油。 油分离系统包括：油分离器，其被构造成从从压缩机流向冷凝器的氨制冷剂中除去油;构造成从蒸发器收集油的排油锅;以及构造成收集油的油储存器 从油分离器和排油锅。
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公开(公告)号：US20140352343A1
公开(公告)日：2014-12-04
申请号：US14359228
申请日：2012-11-16
申请人： Hill Phoenix, Inc.
CPC分类号： F25D21/06 , F25B1/10 , F25B5/02 , F25B7/00 , F25B9/008 , F25B41/043 , F25B47/022 , F25B2309/061 , F25B2341/066 , F25B2400/075 , F25B2400/23 , F25B2600/2509 , F25B2600/2517 , F25B2600/2519
摘要： A C02 refrigeration system has an LT system with LT compressors and LT evaporators, and an MT system with MT compressors and MT evaporators, operating in a refrigeration mode and a defrost mode using C02 hot gas discharge from the MT and/or the LT compressors to defrost the LT evaporators. A C02 refrigerant circuit directs C02 refrigerant through the system and has an LT compressor discharge line with a hot gas discharge valve, a C02 hot gas defrost supply header directing C02 hot gas discharge from the LT and/or the MT compressors to the LT evaporators, a flash tank supplying C02 refrigerant to the MT and LT evaporators during the refrigeration mode, and receiving the C02 hot gas discharge from the LT evaporators during the defrost mode, and a control system directing the C02 hot gas discharge through the LT evaporators and to the flash tank during the defrost mode.
摘要翻译： CO 2制冷系统具有LT系统，其具有LT压缩机和LT蒸发器，以及具有MT压缩机和MT蒸发器的MT系统，其以制冷模式和除霜模式运行，使用来自MT和/或LT压缩机的CO 2热气体排放 除霜LT蒸发器。 CO 2制冷剂回路引导CO 2制冷剂通过系统，并具有带有热气体排放阀的LT压缩机排放管，CO 2热气除霜供应头将CO 2热气从LT和/或MT压缩机排放到LT蒸发器， 在制冷模式期间向MT和LT蒸发器供应CO 2制冷剂的闪蒸罐，以及在除霜模式期间接收来自LT蒸发器的CO 2热气体排放;以及控制系统，其将CO 2热气体排放通过LT蒸发器和 在除霜模式下闪光灯。
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公开(公告)号：US09377236B2
公开(公告)日：2016-06-28
申请号：US14359228
申请日：2012-11-16
申请人： Hill Phoenix, Inc.
CPC分类号： F25D21/06 , F25B1/10 , F25B5/02 , F25B7/00 , F25B9/008 , F25B41/043 , F25B47/022 , F25B2309/061 , F25B2341/066 , F25B2400/075 , F25B2400/23 , F25B2600/2509 , F25B2600/2517 , F25B2600/2519
摘要： A C02 refrigeration system has an LT system with LT compressors and LT evaporators, and an MT system with MT compressors and MT evaporators, operating in a refrigeration mode and a defrost mode using C02 hot gas discharge from the MT and/or the LT compressors to defrost the LT evaporators. A C02 refrigerant circuit directs C02 refrigerant through the system and has an LT compressor discharge line with a hot gas discharge valve, a C02 hot gas defrost supply header directing C02 hot gas discharge from the LT and/or the MT compressors to the LT evaporators, a flash tank supplying C02 refrigerant to the MT and LT evaporators during the refrigeration mode, and receiving the C02 hot gas discharge from the LT evaporators during the defrost mode, and a control system directing the C02 hot gas discharge through the LT evaporators and to the flash tank during the defrost mode.
摘要翻译： CO 2制冷系统具有LT系统，其具有LT压缩机和LT蒸发器，以及具有MT压缩机和MT蒸发器的MT系统，其以制冷模式和除霜模式运行，使用来自MT和/或LT压缩机的CO 2热气体排放 除霜LT蒸发器。 CO 2制冷剂回路引导CO 2制冷剂通过系统，并具有带有热气体排放阀的LT压缩机排放管，CO 2热气除霜供应头将CO 2热气从LT和/或MT压缩机排放到LT蒸发器， 在制冷模式期间向MT和LT蒸发器供应CO 2制冷剂的闪蒸罐，以及在除霜模式期间接收来自LT蒸发器的CO 2热气体排放;以及控制系统，其将CO 2热气体排放通过LT蒸发器和 在除霜模式下闪光灯。
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公开(公告)号：US20140102132A1
公开(公告)日：2014-04-17
申请号：US14137072
申请日：2013-12-20
申请人： Hill Phoenix, Inc.
发明人： David K. Hinde , Shitong Zha , Lin Lan , J. Scott Martin , John M. Gallaher
IPC分类号： F25B9/00
CPC分类号： F25B9/008 , F25B5/02 , F25B7/00 , F25B40/00 , F25B43/006 , F25B2309/06 , F25B2400/075 , F25B2400/22 , F25B2400/23
摘要： A cascade CO2 refrigeration system includes a medium temperature loop for circulating a medium refrigerant and a low temperature loop for circulating a CO2 refrigerant. The medium temperature loop includes a heat exchanger having a first side and a second side. The first side evaporates the medium temperature refrigerant. The low temperature loop includes a discharge header for circulating the CO2 refrigerant through the second side of the heat exchanger to condense the CO2 refrigerant, a liquid-vapor separator collects liquid CO2 refrigerant and directs vapor CO2 refrigerant to the second side of the heat exchanger. A liquid CO2 supply header receives liquid CO2 refrigerant from the liquid-vapor separator. Medium temperature loads receive liquid CO2 refrigerant from the liquid supply header for use as a liquid coolant at a medium temperature. An expansion device expands liquid CO2 refrigerant from the liquid supply header into a low temperature liquid-vapor mixture for use by the low temperature loads.
摘要翻译： 级联CO2制冷系统包括用于循环中等制冷剂的中温回路和用于循环CO 2制冷剂的低温回路。 介质温度回路包括具有第一侧和第二侧的热交换器。 第一面蒸发中温制冷剂。 低温回路包括用于使CO 2制冷剂循环通过热交换器的第二侧的排放头，以冷凝CO 2制冷剂，液 - 气分离器收集液态CO 2制冷剂并将蒸气CO 2制冷剂引导至热交换器的第二侧。 液体CO 2供应头从液 - 气分离器接收液体CO 2制冷剂。 中等温度负载从液体供应头接收液体CO2制冷剂，以在中等温度下用作液体冷却剂。 膨胀装置将液体CO 2制冷剂从液体供应集管扩展成低温液体 - 蒸气混合物，以供低温负荷使用。
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公开(公告)号：US09470435B2
公开(公告)日：2016-10-18
申请号：US14137072
申请日：2013-12-20
申请人： Hill Phoenix, Inc.
发明人： David K. Hinde , Shitong Zha , Lin Lan , J. Scott Martin , John M. Gallaher
CPC分类号： F25B9/008 , F25B5/02 , F25B7/00 , F25B40/00 , F25B43/006 , F25B2309/06 , F25B2400/075 , F25B2400/22 , F25B2400/23
摘要： A cascade CO2 refrigeration system includes a medium temperature loop for circulating a medium refrigerant and a low temperature loop for circulating a CO2 refrigerant. The medium temperature loop includes a heat exchanger having a first side and a second side. The first side evaporates the medium temperature refrigerant. The low temperature loop includes a discharge header for circulating the CO2 refrigerant through the second side of the heat exchanger to condense the CO2 refrigerant, a liquid-vapor separator collects liquid CO2 refrigerant and directs vapor CO2 refrigerant to the second side of the heat exchanger. A liquid CO2 supply header receives liquid CO2 refrigerant from the liquid-vapor separator. Medium temperature loads receive liquid CO2 refrigerant from the liquid supply header for use as a liquid coolant at a medium temperature. An expansion device expands liquid CO2 refrigerant from the liquid supply header into a low temperature liquid-vapor mixture for use by the low temperature loads.
摘要翻译： 级联CO2制冷系统包括用于循环中等制冷剂的中温回路和用于循环CO 2制冷剂的低温回路。 介质温度回路包括具有第一侧和第二侧的热交换器。 第一面蒸发中温制冷剂。 低温回路包括用于使CO 2制冷剂循环通过热交换器的第二侧的排放头，以冷凝CO 2制冷剂，液 - 气分离器收集液态CO 2制冷剂并将蒸气CO 2制冷剂引导至热交换器的第二侧。 液体CO 2供应头从液 - 气分离器接收液体CO 2制冷剂。 中等温度负载从液体供应头接收液体CO2制冷剂，以在中等温度下用作液体冷却剂。 膨胀装置将液体CO 2制冷剂从液体供应集管扩展成低温液体 - 蒸气混合物，以供低温负荷使用。
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