APPARATUS INCLUDING A CLEAN MINI ENVIRONMENT

    公开(公告)号:US20200284467A1

    公开(公告)日:2020-09-10

    申请号:US16765453

    申请日:2018-11-26

    IPC分类号: F24F13/08 F24F3/16

    摘要: An apparatus (10), including a gas recirculation circuit comprising a mini environment chamber (14), a gas pump (16), a filter assembly (22) which are connected by a recirculation channel (20). The apparatus additionally includes an air supply conduit (18) for supplying air to the gas recirculation circuit and having an air supply conduit inlet (18a) which opens into the ambient air and an air supply conduit outlet (18b) which opens in the recirculation circuit. In use, a mini environment chamber pressure (Pme) is maintained higher than the ambient pressure (Pam). The gas recirculation channel (20) includes a substantially frictionless recirculation restriction embodied as a throat (30). At downstream end of the throat which forms the narrow part of the throat, in use, the static pressure is below the ambient pressure. The air supply conduit outlet opens at the downstream end (30a) of the throat.

    Apparatus including a clean mini environment

    公开(公告)号:US11639811B2

    公开(公告)日:2023-05-02

    申请号:US16765453

    申请日:2018-11-26

    IPC分类号: F24F13/08 F24F3/167

    摘要: An apparatus (10), including a gas recirculation circuit comprising a mini environment chamber (14), a gas pump (16), a filter assembly (22) which are connected by a recirculation channel (20). The apparatus additionally includes an air supply conduit (18) for supplying air to the gas recirculation circuit and having an air supply conduit inlet (18a) which opens into the ambient air and an air supply conduit outlet (18b) which opens in the recirculation circuit. In use, a mini environment chamber pressure (Pme) is maintained higher than the ambient pressure (Pam). The gas recirculation channel (20) includes a substantially frictionless recirculation restriction embodied as a throat (30). At downstream end of the throat which forms the narrow part of the throat, in use, the static pressure is below the ambient pressure. The air supply conduit outlet opens at the downstream end (30a) of the throat.