Dust detection
    1.
    发明授权
    Dust detection 失效
    灰尘检测

    公开(公告)号:US4740220A

    公开(公告)日:1988-04-26

    申请号:US888165

    申请日:1986-07-22

    摘要: A personal dust spectrometer for aerodynamically classifying and collecting sub-fractions of inspirable dust, has an entry which has an entry efficiency approximating that of the human head during inhalation, and a cascade impactor comprising a stack of stages each having a flat element and a peripheral wall and gas exit holes. A connector enables a gas sampling pump to be attached to draw air through the entry and through the cascade impactor. A filter is desirably used to collect the smallest dust particles. All the dust entering the device is collected and is measurable.

    摘要翻译: 用于空气动力学分类和收集吸气灰尘的次级部分的个人灰尘光谱仪具有在吸入期间进入效率接近于人头部的入口效率,以及包括一堆级的级联冲击器,每级具有平坦元件和外围 墙壁和气体出口孔。 连接器使得气体采样泵能够连接以通过入口和级联冲击器吸入空气。 期望使用过滤器来收集最小的灰尘颗粒。 进入设备的所有灰尘都被收集并且是可测量的。

    Dust detection
    2.
    发明授权
    Dust detection 失效
    灰尘检测

    公开(公告)号:US4586389A

    公开(公告)日:1986-05-06

    申请号:US539140

    申请日:1983-10-05

    摘要: A portable aerosol dust spectrometer has an inlet section with a sampler entry having an entry efficiency for airborne dust approximately to that of the human head during inhalation, a clean-up stage to remove particles above 15 .mu.m and a main collection stage which is a cascade impactor. The cascade impactor classifies particles of dust and collects fractions onto a number of collection surfaces. A pump draws air or gas through the apparatus. The apparatus samples air in a similar way to the human body and yields fractions of dust for further study.

    摘要翻译: 便携式气溶胶粉尘光谱仪具有入口部分,其具有进气口入口,其具有在吸入期间大致与人体头部的空气中的灰尘的进入效率,用于去除15μm以上的颗粒的清理阶段以及主收集阶段 级联冲击器 级联冲击器将灰尘颗粒分类并收集到许多收集表面上。 泵吸入空气或气体通过设备。 该装置以与人体类似的方式取样空气,并产生灰尘的分数用于进一步研究。

    Dust collection
    3.
    发明授权
    Dust collection 失效
    除尘

    公开(公告)号:US4616513A

    公开(公告)日:1986-10-14

    申请号:US725500

    申请日:1985-04-22

    IPC分类号: G01N1/22 G01N1/24

    摘要: A sampler for "total dust", exhibiting inspirability characteristics similar to the human head, has a filter unit containing a filter. The capsule has a lipped entry which protrudes through an aperture in a sampling head. The sampling head is connectd to suction elements for drawing an atmosphere through the filter unit and is capable of being continuously rotated.

    摘要翻译: 具有类似于人头部的启发性特征的“总粉尘”采样器具有包含过滤器的过滤器单元。 胶囊具有通过采样头中的孔突出的唇形入口。 采样头连接到抽吸元件,用于通过过滤器单元吸引大气,并能够连续旋转。

    Dust collector
    4.
    发明授权
    Dust collector 失效
    除尘器

    公开(公告)号:US4675034A

    公开(公告)日:1987-06-23

    申请号:US782421

    申请日:1985-10-01

    IPC分类号: G01N1/22 G01N1/24 B01D53/30

    摘要: A personal dust sampler, for example to be carried on the lapel of a wearer, has a body part with a gas entry protruding therefrom. The entry has an aspiration efficiency of approximately unity for the gas flow rate of a pump (not shown) which is attachable to an exit from the body. Mounted inside the body is a filter which is removable for examination after a sampling period.

    摘要翻译: 例如要携带在穿着者的翻领上的个人灰尘取样器具有从其突出的气体入口的主体部分。 入口对于可附接到身体的出口的泵(未示出)的气体流量具有近似一致的抽吸效率。 安装在体内是一个过滤器,可在取样期后进行检查。