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Title: Purged window apparatus utilizing heated purge gas

Abstract

A purged window apparatus utilizing tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows, and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube. Use of this apparatus prevents backstreaming of gases under investigation which are flowing past the mouth of the mounting tube which would otherwise deposit on the windows. Lengthy spectroscopic investigations and analyses can thereby be performed without the necessity of interrupting the procedures in order to clean or replace contaminated windows.

Inventors:
 [1]
  1. (Los Alamos, NM)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
864961
Patent Number(s):
US 4443072
Assignee:
United States of America as represented by United States (Washington, DC) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
purged; window; apparatus; utilizing; heated; purge; gas; tangentially; injected; gases; vicinity; electromagnetic; radiation; transmitting; windows; tapered; external; mounting; tube; accelerate; provide; vortex; flow; surface; turbulent; throughout; prevents; backstreaming; investigation; flowing; past; mouth; otherwise; deposit; lengthy; spectroscopic; investigations; analyses; performed; necessity; interrupting; procedures; clean; replace; contaminated; mounting tube; purge gas; electromagnetic radiation; vortex flow; apparatus utilizing; turbulent flow; spectroscopic investigation; flowing past; purged window; window apparatus; heated purge; /359/356/

Citation Formats

Ballard, Evan O. Purged window apparatus utilizing heated purge gas. United States: N. p., 1984. Web.
Ballard, Evan O. Purged window apparatus utilizing heated purge gas. United States.
Ballard, Evan O. Sun . "Purged window apparatus utilizing heated purge gas". United States. https://www.osti.gov/servlets/purl/864961.
@article{osti_864961,
title = {Purged window apparatus utilizing heated purge gas},
author = {Ballard, Evan O.},
abstractNote = {A purged window apparatus utilizing tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows, and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube. Use of this apparatus prevents backstreaming of gases under investigation which are flowing past the mouth of the mounting tube which would otherwise deposit on the windows. Lengthy spectroscopic investigations and analyses can thereby be performed without the necessity of interrupting the procedures in order to clean or replace contaminated windows.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}

Patent:

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