Pressure controlled cryopump regeneration method and system
    1.
    发明授权
    Pressure controlled cryopump regeneration method and system 失效
    压力控制低温泵再生方法及系统

    公开(公告)号:US5517823A

    公开(公告)日:1996-05-21

    申请号:US374140

    申请日:1995-01-18

    IPC分类号: F04B37/08 F04B37/16 B01D8/00

    CPC分类号: F04B37/085 Y10S417/901

    摘要: In a subatmospheric regeneration process, a relief valve and a roughing valve are coupled in parallel to a common roughing pump. During regeneration, the cryopump is warmed to release gases from cryopump stages. The relief valve opens at a first cryopump pressure level less than a predetermined maximum pressure. The maximum pressure is subatmospheric. The relief valve closes when the cryopump pressure drops below a second cryopump pressure level. Pressure in a line between the relief valve and the roughing pump is monitored to control the opening of the roughing valve to the roughing pump.

    摘要翻译: 在低于大气压的再生过程中,安全阀和粗加工阀与共同的粗加工泵并联。 在再生期间,将低温泵加热以从低温泵阶段释放气体。 安全阀在低于预定最大压力的第一低温泵压力水平下打开。 最大压力低于大气压。 当低温泵压力低于第二低温泵压力水平时,安全阀关闭。 监控安全阀和粗加油泵之间管路中的压力,以控制粗加油阀对粗加油泵的打开。