Purge air system for a combustion instrument

Details Purge air system for a combustion instrument Purge air system for a combustion instrument

1986-02-27

1988-11-22

Yasich, D. M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

350584, 356 43, 374144, G01J 502, G01J 510

Patent

active

047861886

ABSTRACT:
A radiation instrument has a purging air flow system for passing air over the lens to keep it clean and free from particulate contaminants and also for providing a positive flow of air away from the lens. The air supply used for such purging is controlled adequately so the flow changes direction and particles are removed from the main flow of purge air by inertial separation prior to the time the air contacts the lens. Such air entrained particles might otherwise deposit on the lens. A flow control orifice provides a secondary flow to carry the particles separated from the main flow out of the flow passageway.

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