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公开(公告)号：US5590539A
公开(公告)日：1997-01-07
申请号：US558740
申请日：1995-11-16
申请人： Todd T. Marohl , Robert Martin , Russell Gossen
发明人： Todd T. Marohl , Robert Martin , Russell Gossen
CPC分类号： F28D1/0477 , F04C23/00 , F25B1/047 , F25B31/002 , F25B31/006 , F25B40/02 , F28F1/00
摘要： The invention resides in improvements to refrigeration systems which rely on circulation of refrigerant gas through compression and expansion phases, and thereby discharging heat from a fluid to be cooled. The refrigeration systems of the invention include a refrigerant loop (24) and a lubricating oil loop (26). The oil loop includes a high capacity-to-volume oil to air oil cooler (48), for cooling the lubricating oil in the oil loop (26). The oil cooler includes a fan, and a variable speed drive for controlling the speed of rotation of the fan. The Preferred refrigerant is ammonia. Incorporating the above improvements into refrigeration systems enables an overall reduction in system sizing, and constancy in the temperature of the oil at the exit of the oil cooler. Such systems, having heat exchange capacity of at least 200,000 Btu/hr., up to at least 500,000 Btu/hr., can be mounted in a frame (14) whereby the overall refrigeration unit (10) comprising refrigeration system (13) and frame (14) can fit a standard 80,000 pound capacity truck. Preferred embodiments do not require cooling water; the only required utilities being a motive power source, used primarily to power the compressor (30). The shut-off valve (44) between the compressor and the heat source heat exchanger (28) is used to trap refrigerant in the heat source heat exchanger (28) when the refrigeration system (13) is shut down.
摘要翻译： 本发明涉及依赖于制冷剂气体通过压缩和膨胀阶段循环从而从待冷却流体排出热量的制冷系统的改进。 本发明的制冷系统包括制冷剂回路（24）和润滑油回路（26）。 油回路包括高容量到体积的油到空气油冷却器（48），用于冷却油回路（26）中的润滑油。 油冷却器包括风扇和用于控制风扇旋转速度的变速驱动器。 优选的制冷剂是氨。 将上述改进结合到制冷系统中，可以全面减小系统尺寸以及油冷却器出口处油温的恒定。 具有至少200,000Btu / hr，至多500,000Btu / hr的热交换能力的这种系统可以安装在框架（14）中，由此整个制冷单元（10）包括制冷系统（13）和 框架（14）可以装配标准的80,000磅的货车。 优选实施例不需要冷却水; 唯一需要的公用设施是动力源，主要用于为压缩机（30）供电。 当制冷系统（13）关闭时，压缩机与热源热交换器（28）之间的截止阀（44）用于收集热源热交换器（28）中的制冷剂。
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公开(公告)号：US5214928A
公开(公告)日：1993-06-01
申请号：US679119
申请日：1991-04-02
CPC分类号： F25B40/02 , F04C23/00 , F25B1/047 , F25B31/006 , F28D1/0477 , F28F1/00
摘要： The invention resides in improvements to refrigeration systems which rely on circulation of refrigerant gas through compression and expansion phases, and thereby discharging heat from a fluid to be cooled. The invention includes a subcooler (38) in the refrigerant loop, downstream of the refrigerant condenser (34) and a gas trap (36) between the condenser (34) and the subcooler (38), that assures temperature drop in the subcooler (38). The invention also comprehends a shut-off valve (44) between the compressor and the heat source heat exchanger (28). The invention further includes a high capacity-to-volume oil to air heat exchanger (48), for cooling the lubricating oil in the oil loop (26). Preferred refrigerant is ammonia. Incorporating the above improvements into refrigeration systems enables an overall reduction in system sizing. Such systems, having heat exchange capacity of at least 200,000 Btu/hr., up to at least 500,000 Btu/hr., can be mounted in a frame (14) whereby the overall refrigeration unit (10) comprising refrigeration system (13) and frame (14) can fit a standard 80,000 pound capacity truck. Preferred embodiments do not require cooling water; the only required utilities being a motive power source, used primarily to power the compressor (30). The shut-off valve (44) between the compressor and the heat source heat exchanger (28) is used to trap refrigerant in the heat source heat exchanger (28) when the refrigeration system (13) is shut down. This enables maintaining a sufficient amount of refrigerant in the heat source heat exchanger (28) to facilitate an adequate rate of pressure build-up at the compressor (30) when the system is re-started, even under intervening temperatures at least as cold as 30 degrees F., or less.
摘要翻译： 本发明涉及依赖于制冷剂气体通过压缩和膨胀阶段循环从而从待冷却流体排出热量的制冷系统的改进。 本发明包括制冷剂回路中的过冷却器（38），制冷剂冷凝器（34）的下游和冷凝器（34）和过冷却器（38）之间的气体收集器（36），确保过冷却器（38）中的温度下降 ）。 本发明还包括在压缩机和热源热交换器（28）之间的截止阀（44）。 本发明还包括用于冷却油回路（26）中的润滑油的高容量 - 体积的油对空气热交换器（48）。 优选的制冷剂是氨。 将上述改进结合到制冷系统中，可以全面减少系统尺寸。 具有至少200,000Btu / hr，至多500,000Btu / hr的热交换能力的这种系统可以安装在框架（14）中，由此整个制冷单元（10）包括制冷系统（13）和 框架（14）可以装配标准的80,000磅的货车。 优选实施例不需要冷却水; 唯一需要的公用设施是动力源，主要用于为压缩机（30）供电。 当制冷系统（13）关闭时，压缩机与热源热交换器（28）之间的截止阀（44）用于收集热源热交换器（28）中的制冷剂。 这使得能够在热源热交换器（28）中保持足够量的制冷剂，以便在系统重新启动时促进在压缩机（30）处的适当的压力积聚，即使在至少与例如 30华氏度以下。
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公开(公告)号：US5613368A
公开(公告)日：1997-03-25
申请号：US559579
申请日：1995-11-16
申请人： Todd T. Marohl , Robert Burdick , Ronald A. Cole
发明人： Todd T. Marohl , Robert Burdick , Ronald A. Cole
CPC分类号： F04C23/00 , F25B1/047 , F25B31/006 , F25B40/02 , F28D1/0477 , F28F1/00
摘要： The invention resides in improvements to refrigeration systems which rely on circulation of refrigerant gas through compression and expansion phases, and thereby discharging heat from a fluid to be cooled. The invention includes a subcooler (38) in the refrigerant loop, downstream of the refrigerant condenser (34) and a gas trap (36) between the condenser (34) and the subcooler (38), that assures temperature drop in the subcooler (38). The invention also comprehends a shut-off valve (44) between the compressor and the heat source heat exchanger (28). The invention further includes a high capacity-to-volume oil to air heat exchanger (48), for cooling the lubricating oil in the oil loop (26). Preferred refrigerant is ammonia. Incorporating the above improvements into refrigeration systems enables an overall reduction in system sizing. Such systems, having heat exchange capacity of at least 200,000 Btu/hr., up to at least 500,000 Btu/hr., can be mounted in a frame (14) whereby the overall refrigeration unit (10) comprising refrigeration system (13) and frame (14) can fit a standard 80,000 pound capacity truck. Preferred embodiments do not require cooling water; the only required utilities being a motive power source, used primarily to power the compressor (30). The shut-off valve (44) between the compressor and the heat source heat exchanger (289 is used to trap refrigerant in the heat source heat exchanger (28) when the refrigeration system (13) is shut down.
摘要翻译： 本发明涉及依赖于制冷剂气体通过压缩和膨胀阶段循环从而从待冷却流体排出热量的制冷系统的改进。 本发明包括制冷剂回路中的过冷却器（38），制冷剂冷凝器（34）的下游和冷凝器（34）和过冷却器（38）之间的气体收集器（36），确保过冷却器（38）中的温度下降 ）。 本发明还包括在压缩机和热源热交换器（28）之间的截止阀（44）。 本发明还包括用于冷却油回路（26）中的润滑油的高容量 - 体积的油对空气热交换器（48）。 优选的制冷剂是氨。 将上述改进结合到制冷系统中，可以全面减少系统尺寸。 具有至少200,000Btu / hr，至多500,000Btu / hr的热交换能力的这种系统可以安装在框架（14）中，由此整个制冷单元（10）包括制冷系统（13）和 框架（14）可以装配标准的80,000磅的货车。 优选实施例不需要冷却水; 唯一需要的公用设施是动力源，主要用于为压缩机（30）供电。 当制冷系统（13）关闭时，压缩机和热源热交换器（289）之间的截止阀（44）被用来捕集热源热交换器（28）中的制冷剂。
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