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1. 发明授权

US5501082A Refrigeration purge and/or recovery apparatus 失效
标题翻译：制冷清洗和/或回收装置
公开(公告)号：US5501082A
公开(公告)日：1996-03-26
申请号：US76641
申请日：1993-06-15
申请人： Keiji Tachibana , Susumu Ishii , Michio Kumaki , Takeo Genba
发明人： Keiji Tachibana , Susumu Ishii , Michio Kumaki , Takeo Genba
IPC分类号： F25B45/00
CPC分类号： F25B45/00 , F25B2345/002
摘要： An improved refrigerant recovery method and apparatus by which a refrigerant charged in a refrigerator is transferred into a refrigerant tank are disclosed. The apparatus is adapted to discharge almost all the refrigerant gas from the refrigerator and purge non-condensible gases from a safety valve to the atmosphere with little refrigerant gas accompanying the non-condensible gases. There are provided a vacuum pump at the upstream side of a line connected between the refrigerator and a liquid separator, and a compressor at the downstream side thereof, the vacuum pump and compressor being connected in series with each other. The vacuum pump is intended to nearly zero the pressure of the remaining refrigerant gas in the refrigerator and the compressor is to give the liquid separator a desired internal pressure, thereby minimizing the amount of refrigerant gas purged along with the non-condensible gases to the atmosphere. Also a bypass valve is provided to bypass the vacuum pump. By opening the bypass valve to activate the compressor independently with the vacuum pump put out of operation to circulate the refrigerant liquid accumulating in the lower portion of the liquid separator to the refrigerator, it is possible to purge the non-condensible gases to the atmosphere during operation of the refrigerator.
摘要翻译：公开了一种改进的制冷剂回收方法和装置，其中将装在冰箱中的制冷剂转移到制冷剂罐中。该装置适于从冰箱排出几乎所有的制冷剂气体，并且将不可冷凝气体从安全阀排放到大气中，伴随着不可冷凝气体的少量制冷剂气体。在连接在冰箱和液体分离器之间的管线的上游侧设有真空泵，在其下游侧设置有真空泵和压缩机彼此串联连接的真空泵。真空泵几乎将冰箱中剩余的制冷剂气体的压力几乎归零，并且压缩机将使液体分离器产生所需的内部压力，从而最小化与不可冷凝气体一起吹送到大气中的制冷剂气体的量。还提供旁通阀以绕过真空泵。通过打开旁通阀以独立地启动压缩机，使真空泵停止运行，使积液在液体分离器的下部的制冷剂液体循环到冰箱，可以将不可冷凝的气体吹扫到大气中操作冰箱。

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