DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low pressure drop, multi-slit virtual impactor

Abstract

Fluid flow is directed into a multiplicity of slit nozzles positioned so that the fluid flow is directed into a gap between the nozzles and (a) a number of receiving chambers and (b) a number of exhaust chambers. The nozzles and chambers are select so that the fluid flow will be separated into a first particle flow component with larger and a second particle flow component with the smaller particles.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
874501
Patent Number(s):
6402817
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pressure; drop; multi-slit; virtual; impactor; fluid; flow; directed; multiplicity; slit; nozzles; positioned; gap; receiving; chambers; exhaust; select; separated; particle; component; larger; particles; fluid flow; pressure drop; virtual impactor; /95/55/73/

Citation Formats

Bergman, Werner. Low pressure drop, multi-slit virtual impactor. United States: N. p., 2002. Web.
Bergman, Werner. Low pressure drop, multi-slit virtual impactor. United States.
Bergman, Werner. Tue . "Low pressure drop, multi-slit virtual impactor". United States. https://www.osti.gov/servlets/purl/874501.
@article{osti_874501,
title = {Low pressure drop, multi-slit virtual impactor},
author = {Bergman, Werner},
abstractNote = {Fluid flow is directed into a multiplicity of slit nozzles positioned so that the fluid flow is directed into a gap between the nozzles and (a) a number of receiving chambers and (b) a number of exhaust chambers. The nozzles and chambers are select so that the fluid flow will be separated into a first particle flow component with larger and a second particle flow component with the smaller particles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Works referenced in this record:

A technique to expose animals to concentrated fine ambient aerosols.
journal, February 1995


The Cascade Centripeter: A Device for Determining the Concentration and Size Distribution of Aerosols
journal, March 1965


High-volume Impactor for Sampling Fine and Coarse Particles
journal, May 1990


An improved virtual impactor: Design and performance
journal, April 1987


Development and Evaluation of a Prototype Ambient Particle Concentrator for Inhalation Exposure Studies
journal, January 1995


Use of two virtual impactors in series as an aerosol generator
journal, February 1988


Fine particle concentrators for inhalation exposures—effect of particle size and composition
journal, September 1997


Performance of a Modified Virtual Impactor
journal, January 1986


An Inertial-Type Particle Separator for Collecting Large Samples
journal, January 1966


Development of High Efficiency Virtual Impactors
journal, January 1988


Aerosol fractionator for large‐scale sampling
journal, October 1976


Experimental and theoretical study of a two-dimensional virtual impactor
journal, August 1982


Development of a low cutpoint slit virtual impactor for sampling ambient fine particles
journal, October 1994


A High-Volume Small Cutpoint Virtual Impactor for Separation of Atmospheric Particulate from Gaseous Pollutants
journal, July 1994


Effect of Clean Air Core Geometry on Fine Particle Contamination And Calibration of a Virtual Impactor
journal, January 1997