RESPIRATOR AND HEAD-MOUNTED PROTECTIVE APPARATUS
    50.
    发明申请
    RESPIRATOR AND HEAD-MOUNTED PROTECTIVE APPARATUS 审中-公开
    呼吸器和头戴式保护装置

    公开(公告)号:US20170050056A1

    公开(公告)日:2017-02-23

    申请号:US15147048

    申请日:2016-05-05

    摘要: Disclosed are a respirator and a head-mounted protection apparatus. The respirator includes a respirator body. A breathing passage is formed in the respirator body for airflow when a user breathes. The respirator further includes a filter layer switching device and at least two filter layers of different filtering properties, and the filter layer switching device is installed on the respirator body and is configured to switch filter layers below the breathing passage according to requirements. In use of the respirator, the user can transfer a filter layer of a required performance to a region below the breathing passage using the filter layer switching device based on his requirement for air filtration.

    摘要翻译: 公开了一种呼吸器和头戴式保护装置。 呼吸器包括呼吸器体。 呼吸器体内形成呼吸通道,用于呼吸时气流。 所述呼吸器还包括过滤层切换装置和至少两个具有不同过滤特性的过滤层,所述过滤层切换装置安装在所述呼吸器主体上,并根据需要将所述呼吸通道下方的过滤层切换。 在使用呼吸器时,使用者可以根据其对空气过滤的要求,使用过滤层切换装置将所需性能的过滤层转移到呼吸通道下方的区域。