Virtual impactor
    1.
    发明授权
    Virtual impactor 失效
    虚拟冲击者

    公开(公告)号:US06698592B2

    公开(公告)日:2004-03-02

    申请号:US10202210

    申请日:2002-07-22

    IPC分类号: B07B704

    摘要: A separation plate separates a major flow of fluid from a minor flow of fluid. The major flow includes a minor portion of particles greater than a “cut size,” while the minor flow includes a major portion of particles greater than the cut size. Plates define a laterally extending passage between a front of the separation plate and its rear. The passage telescopes or converges from an initial height at its inlet, to a substantially smaller height at its outlet. A slot extends transversely into the plates from within a minor flow portion of the passage and connect into major flow outlet ports. The flow of fluid into the outlet is thus divided into the major flow, which flows from the major flow outlet ports and the minor flow that exits the outlet of the passage. To accommodate a desired flow of fluid, the width of the passage can be changed, or an array of stacked separation plates can be employed.

    摘要翻译: 分离板将主流体流与少量流体分开。 主要流量包括小于“切割尺寸”的较小部分的颗粒,而较小的流量包括大于切割尺寸的大部分颗粒。 板在分隔板的前部和其后部之间限定横向延伸的通道。 通道从其入口处的初始高度望远镜或会聚到其出口处的基本较小的高度。 狭槽从通道的小流动部分内横向延伸到板中并且连接到主流出口。 因此,进入出口的流体流被分成从主要流出口流出的主要流量和离开通道出口的小流量。 为了适应期望的流体流动,可以改变通道的宽度,或者可以使用堆叠的分隔板阵列。

    Micromachined virtual impactor
    2.
    发明授权
    Micromachined virtual impactor 有权
    微加工虚拟冲击器

    公开(公告)号:US06290065B1

    公开(公告)日:2001-09-18

    申请号:US09494962

    申请日:2000-01-31

    IPC分类号: B07B704

    摘要: A separation plate separates a major flow of fluid from a minor flow of fluid. The major flow includes a minor portion of particles greater than a “cut size,” while the minor flow includes a major portion of particles greater than the cut size. Plates define a laterally extending passage between a front of the separation plate and its rear. The passage telescopes or converges from an initial height at its inlet, to a substantially smaller height at its outlet. A slot extends transversely into the plates from within a minor flow portion of the passage and connect into major flow outlet ports. The flow of fluid into the outlet is thus divided into the major flow, which flows from the major flow outlet ports and the minor flow that exits the outlet of the passage. To accommodate a desired flow of fluid, the width of the passage can be changed, or an array of stacked separation plates can be employed.

    摘要翻译: 分离板将主流体流与少量流体分开。 主要流量包括小于“切割尺寸”的较小部分的颗粒,而较小的流量包括大于切割尺寸的大部分颗粒。 板在分隔板的前部和其后部之间限定横向延伸的通道。 通道从其入口处的初始高度望远镜或会聚到其出口处的基本较小的高度。 狭槽从通道的小流动部分内横向延伸到板中并且连接到主流出口。 因此,流入出口的流体被分成从主要流出口流出的主要流量和离开通道出口的小流量。 为了适应期望的流体流动,可以改变通道的宽度,或者可以使用堆叠的分隔板阵列。

    Biological individual sampler
    3.
    发明授权
    Biological individual sampler 失效
    生物个体取样器

    公开(公告)号:US06729196B2

    公开(公告)日:2004-05-04

    申请号:US09775872

    申请日:2001-02-01

    IPC分类号: G01N3120

    摘要: A portable sampling unit capable of separating particulates, including biological organisms, from gaseous fluids such as air. A combined particle impact collector and fan is used to both move fluid through the sampling unit and to collect particulates. In one embodiment, the combined particle impact collector is a disposable unit that is removed and replaced with a fresh unit after each sampling period. The disposable unit is placed in a rinse station, where a liquid sample is extracted for later analysis. Alternatively, a disposable detection unit is incorporated in the sampling unit to provide real time detection of chemical toxins and/or biological pathogens. Preferably, the detector unit includes micro-fluidic channels so that a minimum amount of sample and test reagents are required. In another embodiment, the combined impact collector is integral to the sampling unit, rather than a separate disposable item.

    摘要翻译: 一种便携式取样单元,能够将气体(如空气)的微粒分离出来,包括生物体。 组合的颗粒冲击收集器和风扇用于将流体移动通过取样单元并收集颗粒物。 在一个实施例中,组合的颗粒撞击收集器是在每个采样周期之后被移除并被新鲜单元替换的一次性单元。 将一次性单元放置在冲洗站中,其中提取液体样品用于后续分析。 或者,将一次性检测单元并入采样单元中以提供化学毒素和/或生物病原体的实时检测。 优选地,检测器单元包括微流体通道,使得需要最少量的样品和测试试剂。 在另一个实施例中,组合的冲击收集器与采样单元是一体的,而不是单独的一次性物品。