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2. 发明授权

US6086347A Two-stage rotary vane motor 失效
标题翻译：两级旋片马达
公开(公告)号：US6086347A
公开(公告)日：2000-07-11
申请号：US139184
申请日：1998-08-25
申请人： Antonin Ryska , Jiri Ota , Herman H. Viegas , Bruce E. McClellan
发明人： Antonin Ryska , Jiri Ota , Herman H. Viegas , Bruce E. McClellan
IPC分类号： F04C2/344 , F01C1/344 , F01C11/00 , F01C20/00 , F01C20/06 , F01C21/00 , F03C2/30 , F04C11/00 , F04C28/02 , F04C29/00 , F04C29/12
CPC分类号： F01C21/008 , F01C1/3442 , F01C11/002 , F01C20/00 , F01C20/06 , F04C2270/56
摘要： A two-stage rotary vane motor is provided that is particularly efficient for use in cryogenic refrigeration systems where the mass flow rate of the drive fluid (which may be expanding cryogen gas) varies substantially. The two-stage rotary vane motor includes a housing enclosure having first and second fluid chambers, each with their own inlets for receiving pressurized cryogen, and first and second rotors rotatably mounted within the chambers by means of a shaft assembly having an output end. In operation, when the mass flow of the drive fluid is high (350 pounds per hour), fluid is admitted through the inlets of both the chambers of the housing enclosure to drive both of the rotors. However, when the mass flow of the drive fluid drops to a low level (i.e., 100 pounds per hour), expanding cryogen is admitted only through the second chamber of the housing enclosure to drive only the second rotor. An overrunning clutch may be used to engage and disengage the first rotor from the shaft assembly in coordination with the admission of drive fluid through both or only one of the housing inlets.
摘要翻译：提供了两级旋转叶片电动机，其特别有效地用于低温制冷系统，其中驱动流体（其可膨胀的致冷剂气体）的质量流量基本上变化。两级旋转叶片马达包括具有第一和第二流体室的壳体壳体，每个流体室具有用于接收加压制冷剂的各自的入口，以及通过具有输出端的轴组件可旋转地安装在腔室内的第一和第二转子。在操作中，当驱动流体的质量流量高（350磅/小时）时，通过壳体外壳的两个腔室的入口允许流体驱动两个转子。然而，当驱动流体的质量流量下降到低水平（即每小时100磅）时，仅通过壳体外壳的第二腔室仅允许扩张的冷冻剂仅驱动第二转子。可以使用超越离合器来将第一转子与轴组件接合并且与驱动流体通过两个或仅一个壳体入口协调地脱离啮合。

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