公开(公告)号：US3740149A

公开(公告)日：1973-06-19

申请号：US3740149D

申请日：1972-02-02

Applicant: GEN ELECTRIC

Inventor： WHETTEN N

IPC: G01N15/06 ,  G01N15/02

CPC classification number: G01N15/065

Abstract: The size distribution of particles including particulate matter in a gas sample is determined by generating a three-dimensional alternating current electric field in an expansion chamber for mass-selective sorting of the particles whereby condensible vapor saturated charged particles in the gas sample which are in a particular range of charge-to-mass ration are trapped within the electric field and the particles outside the range are swept away. An expansion of the gas in the expansion chamber causes condensation of droplets on the trapped particles and a condensation nuclei counter may be used for detecting the number of droplets which corresponds to a like number of the trapped particles in the particular range of charge-to-mass ratio occurring in the gas sample.

Abstract translation: 通过在膨胀室中产生三维交流电场来确定气体样品中颗粒物质的尺寸分布，用于对颗粒进行质量选择性分选，其中气体样品中的可冷凝的蒸汽饱和带电粒子在 电荷质量比的特定范围被捕获在电场内，并且范围之外的颗粒被扫除。 气体在膨胀室中的膨胀导致液滴在捕获的颗粒上的冷凝，并且冷凝核计数器可以用于检测在特定的电荷 - 电压范围内对应于相同数目的捕获颗粒的液滴数量， 质量比发生在气体样品中。

公开(公告)号：US3740553A

公开(公告)日：1973-06-19

申请号：US3740553D

申请日：1972-02-02

Applicant: GEN ELECTRIC

Inventor： WHETTEN N

IPC: G01N15/06 ,  H01J39/34

CPC classification number: G01N15/065

Abstract: The size distribution of particles including particulate matter in a gas sample is determined by generating a two-dimensional alternating current electric field for mass-selective sorting of the particles whereby condensible vapor saturated charged particles in the gas sample which are in a particular range of charge-to-mass ratio, are directed to an expansion chamber. An expansion of the gas in the expansion chamber causes condensation of droplets on the particles, and a condensation nuclei counter may be used for detecting the number of the droplets which corresponds to a like number of the particles in the particular range of charge-to-mass ratio in the gas sample.

Abstract translation: 通过产生用于质量选择性分选颗粒的二维交流电场来确定包括气体样品中的颗粒物质的颗粒的尺寸分布，由此在气体样品中的可冷凝的蒸汽饱和带电粒子处于特定的电荷范围 质量比指向膨胀室。 膨胀室中的气体的膨胀导致液滴在颗粒上的冷凝，并且冷凝核计数器可以用于检测在特定的电荷 - 电压范围内对应于类似数量的颗粒的液滴的数量， 气体样品中的质量比。

公开(公告)号：US3739554A

公开(公告)日：1973-06-19

申请号：US3739554D

申请日：1971-12-01

Applicant: GEN ELECTRIC

Inventor： WHETTEN N ,  WEBSTER H

IPC: B03C3/00 ,  B03C3/88 ,  B03C3/08

CPC classification number: B03C3/885 ,  B03C3/08 ,  B03C3/12 ,  B03C3/368 ,  B03C3/41 ,  B03C3/47 ,  B03C2201/04 ,  B03C2201/14

Abstract: A duct for the transmission of an air flow therethrough is provided with a plurality of parallel plates oriented parallel to the air flow. The plates have aligned holes therethrough and are connected to a source of alternating current voltage for generating alternating current electric fields in the region of the holes. The electrical forces generated by the electric fields trap charged particles in the air flow and direct them through the holes to the sides of the duct for collection and subsequent removal. The trapping of the particles is enhanced by coating the plates with a high dielectric strength material.

Abstract translation: 用于传输通过其中的空气流的管道设置有平行于空气流定向的多个平行板。 这些板具有对准的穿过其中的孔，并且连接到交流电源，用于在孔的区域中产生交流电场。 由电场产生的电力将空气中的带电颗粒捕获并引导它们穿过管道的两侧，用于收集和随后的去除。 通过用高介电强度材料涂覆板来增强颗粒的捕获。

公开(公告)号：US3739552A

公开(公告)日：1973-06-19

申请号：US3739552D

申请日：1971-12-01

Applicant: GEN ELECTRIC

Inventor： WEBSTER H ,  WHETTEN N

IPC: B03C3/00 ,  B03C3/12 ,  B03C3/04

CPC classification number: B03C3/12

Abstract: A duct for the transmission of an air flow therethrough is provided with parallel planar arrays of electrical conductors which are angularly positioned relative to the axis of the air flow. The conductors are parallel to each other and connected to a source of alternating current voltage for generating two dimensional multipolar alternating current electrodynamic fields across the duct. The electrical forces generated by the multipolar fields trap charged particles in the air flow and the orientation of the air flow relative to the angular position of the conductor planar arrays causes the particles to be directed to a side of the duct for collection and subsequent removal. The trapping of the particles is enhanced by coating the conductors with a high dielectric strength material.

Abstract translation: 用于传输通过其中的空气流的管道设置有相对于空气流的轴线成角度地定位的电导体的平行平面阵列。 导体彼此平行并连接到交流电源上，以在管道上产生二维多极交流电动场。 由多极场产生的电力捕获空气流中的带电粒子和相对于导体平面阵列的角位置的空气流的取向使得颗粒被引导到管道的一侧以用于收集和随后的去除。 通过用高介电强度材料涂覆导体来增强颗粒的捕获。