Oxygen depletion sensor

F - Mech Eng,Light,Heat,Weapons – 23 – N

Patent

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Details

F23N 5/00 (2006.01) F23N 5/10 (2006.01)

Patent

CA 2362615

An oxygen depletion sensor relies on the shift of a pilot flame away from a nozzle as the oxygen content of the combustion air decreases. A thermocouple is positioned so as to be in the flame during combustion at acceptable oxygen levels and in the unburned zone when the oxygen content is below an acceptable level. The large voltage difference between conditions of high and low oxygen content provide for a more reliable sensor.

L'invention concerne une sonde d'oxygène à niveaux qui se fonde sur les variations de la flamme d'une veilleuse située à distance d'une buse lorsque le contenu d'oxygène de l'air comburant diminue. Un thermocouple est positionné de sorte qu'il est situé dans la flamme pendant la combustion à des niveaux d'oxygène acceptables, et dans la zone non exposée à la flamme lorsque le contenu d'oxygène est inférieur à un niveau acceptable. La grande différence de tension entre un niveau élevé et un faible niveau d'oxygène améliore la fiabilité de la sonde.

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