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Title: Virtual impactor

Abstract

A virtual impactor having improved efficiency and low wall losses in which a core of clean air is inserted into the aerosol flow while aerosol flow is maintained adjacent inner wall surfaces of the focusing portion of the impactor. The flow rate of the core and the length of the throat of the impactor's collection probe, as well as the dimensional relationships of other components of the impactor adjacent the separation region of the impactor, are selected to optimize separation efficiency.

Inventors:
 [1];  [1];  [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
LOVELACE BIOMED & ENV RES INST
OSTI Identifier:
866699
Patent Number(s):
4767524
Application Number:
07/081,928
Assignee:
Lovelace Medical Foundation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
B - PERFORMING OPERATIONS B07 - SEPARATING SOLIDS FROM SOLIDS B07B - SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS
DOE Contract Number:  
AC04-76EV01013
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
virtual; impactor; improved; efficiency; wall; losses; core; clean; air; inserted; aerosol; flow; maintained; adjacent; inner; surfaces; focusing; portion; rate; length; throat; collection; probe; dimensional; relationships; components; separation; region; selected; optimize; virtual impactor; separation efficiency; wall surface; improved efficiency; inner wall; flow rate; wall surfaces; collection probe; separation region; clean air; wall losses; adjacent inner; aerosol flow; /209/73/96/

Citation Formats

Yeh, Hsu-Chi, Chen, Bean T, Cheng, Yung-Sung, and Newton, George J. Virtual impactor. United States: N. p., 1988. Web.
Yeh, Hsu-Chi, Chen, Bean T, Cheng, Yung-Sung, & Newton, George J. Virtual impactor. United States.
Yeh, Hsu-Chi, Chen, Bean T, Cheng, Yung-Sung, and Newton, George J. Tue . "Virtual impactor". United States. https://www.osti.gov/servlets/purl/866699.
@article{osti_866699,
title = {Virtual impactor},
author = {Yeh, Hsu-Chi and Chen, Bean T and Cheng, Yung-Sung and Newton, George J},
abstractNote = {A virtual impactor having improved efficiency and low wall losses in which a core of clean air is inserted into the aerosol flow while aerosol flow is maintained adjacent inner wall surfaces of the focusing portion of the impactor. The flow rate of the core and the length of the throat of the impactor's collection probe, as well as the dimensional relationships of other components of the impactor adjacent the separation region of the impactor, are selected to optimize separation efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {8}
}

Patent:

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