公开(公告)号：US3710557A

公开(公告)日：1973-01-16

申请号：US3710557D

申请日：1972-03-17

Applicant: ATOMIC ENERGY COMMISSION

Inventor： COUCHMAN J ,  APPLEBAY G

IPC: G01N1/22 ,  B01D35/26

CPC classification number: G01N1/2247 ,  G01N1/2202 ,  G01N2001/2223 ,  G01N2001/225

Abstract: An air sampling device including a sampling duct containing a particulate filter and a venturi shroud surrounding the duct. Flow tubes are provided for delivering high velocity air from the venturi into the region behind the filter. Control jets in the region of the venturi constriction enable the effect of the venturi to be varied by the injection of pressurized air from an auxiliary source such as an aircraft cabin or the utilization of the siphon pumping action of the venturi.

Abstract translation: 一个空气采样装置，包括一个包含微粒过滤器的采样管和围绕管道的文丘里管。 提供流量管，用于将来自文丘里管的高速空气输送到过滤器后面的区域。 在文氏管收缩区域内的控制喷嘴可以通过从辅助源（如飞机机舱）注入加压空气或利用文丘里管的虹吸泵送作用来改变文丘里管的效果。