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    • 5. 发明授权
    • Multistage compression refrigerating machine for supplying refrigerant from subcooler to cool rotating machine and lubricating oil
    • 用于从过冷却器供应制冷剂以冷却旋转机和润滑油的多级压缩制冷机
    • US06460371B2
    • 2002-10-08
    • US09904891
    • 2001-07-16
    • Akihiro Kawada
    • Akihiro Kawada
    • F25B3100
    • F25B1/10F04C23/001F04C29/0007F25B31/006F25B2400/13F25B2400/23
    • A multistage compression refrigerating machine is disclosed, which efficiently cools a rotating machine such as an electric motor and lubricating oil by using a refrigerant and increases the amount of refrigerant to be used to provide the refrigerating capacity in the evaporator, thereby improving the refrigerating capacity. The machine comprises a condenser for supplying a condensed refrigerant to an evaporator via a subcooler: a multistage compression system for absorbing the above refrigerant, absorbing a refrigerant evaporated from the subcooler, from an intermediate position between adjacent compressors, compressing the absorbed refrigerants together, and discharging it to the condenser; a rotating-machine cooler for cooling a rotating machine for driving the multistage compression system; and a lubricating-oil cooler for cooling lubricating oil. The refrigerant extracted from the subcooler is supplied to the rotating-machine cooler and the lubricating-oil cooler, and this refrigerant is returned to the evaporator after cooling.
    • 公开了一种多级压缩式制冷机,其通过使用制冷剂有效地冷却旋转机械,例如电动机和润滑油,并且增加用于提供蒸发器中的制冷能力的制冷剂的量,从而提高制冷量。 该机器包括用于经由过冷却器将冷凝的制冷剂供应到蒸发器的冷凝器:用于吸收上述制冷剂的多级压缩系统,从相邻压缩机之间的中间位置吸收从过冷却器蒸发的制冷剂,将吸收的制冷剂压缩在一起,以及 将其排放到冷凝器; 用于冷却用于驱动多级压缩系统的旋转机器的旋转机冷却器; 以及用于冷却润滑油的润滑油冷却器。 从过冷却器抽出的制冷剂供给旋转冷却器和润滑油冷却器,冷却后将该制冷剂返回到蒸发器。