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    • 64. 发明专利
    • Nozzle of fine particle detector
    • 细颗粒探测器喷嘴
    • JPS60190834A
    • 1985-09-28
    • JP3267985
    • 1985-02-22
    • Hitachi Electronics Eng Co LtdHitachi Ltd
    • IWATANI FUKUOYAMADA KUNIOTSUKADA KAZUYATAKAMI KATSUMISUDA TADASHITAKAHASHI KENSAKU
    • G01N21/53G01N1/22G01N15/00
    • G01N1/2202G01N2001/2223
    • PURPOSE:To obtain a high-speed, stable laminar air of aerosol, by providing a nozzle so that the outer screen of the aerosol comprises two or more layers having different speeds. CONSTITUTION:At the outside of an original pipe, a pipe 10, which can be slidden in the axial direction, is further provided. Second clean air 11 is introduced into this pipe, and the second layer screen is formed. In order to make aerosol 3 into a stable laminar air, speeds V1 and V2 are made approximately equal and an appropriate intermediate value between the speed V2 and the zero speed is imparted to a speed V3. It is necessary to determine the speed V3 empirically. In present invention, the speed V3 is adjusted by providing a sliding mechanism in the pipe 10, moving the pipe 10 in the axial direction, and changing the interval between tips 12' and 12'' of a nozzle 12. Thus the high-speed, stable laminar air of the aerosol can be obtained.
    • 目的:通过提供喷嘴使得气溶胶的外屏幕具有不同速度的两层或多层,以获得高速稳定的气溶胶层流空气。 构成:在原管的外侧,进一步设置能够沿轴向切断的管道10。 将第二清洁空气11引入该管中,形成第二层筛。 为了使气溶胶3成为稳定的层流空气,速度V1和V2大致相等,将速度V2和零速度之间的适当中间值赋予速度V3。 有必要经验性地确定速度V3。 在本发明中,通过在管10中设置滑动机构,使管10沿轴向移动,并且改变喷嘴12的尖端12'和12“之间的间隔来调节速度V3。因此,高速 ,可以获得气溶胶的稳定层流空气。