Igniter shields

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

Patent

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Details

F23Q 7/22 (2006.01) F23Q 3/00 (2006.01) F23Q 7/24 (2006.01) F23Q 9/00 (2006.01)

Patent

CA 2398947

An igniter for use in industrial and domestic gas burning appliances is disclosed. One embodiment of the igniter includes an igniter element disposed on the longitudinal axis of a tubular shield. The shield includes at least one open slot formed therethrough for providing a passageway through which gas and air can flow, thereby forming one or more open spiral patterns in the tubular shield. Another embodiment of the igniter includes an igniter element disposed on the longitudinal axis of a spiral coil. Still another embodiment of the igniter includes an igniter element disposed on the lontigudinal axis of a ceramic, cylindrical sleeve. The sleeve includes at least one hole formed therethrough for optimally exposing the igniter element to a gas flow. The tubular shield, the spiral coil, and the ceramic sleeve protect the igniter element from accidental damage or breakage, and allow an optimal flow of gas and air to the igniter element, thereby facilitating subsequent ignition of the gas.

L'invention concerne un allumeur qu'on utilise dans des appareils industriels ou domestiques de brûlage au gaz. Dans une forme de réalisation, on décrit un élément de l'allumeur qui est disposé sur l'axe longitudinal d'un blindage tubulaire. Le blindage comprend au moins une fente ouverte servant de passage par lequel le gaz et l'air peuvent s'écouler pour former une ou plusieurs spirales ouvertes dans le blindage tubulaire. Dans une autre forme de réalisation, on décrit un élément de l'allumeur disposé sur l'axe longitudinal d'un manchon céramique cylindrique. Le manchon comprend au moins un orifice traversant servant à exposer de façon optimale l'élément de l'allumeur à l'écoulement gazeux. Le blindage tubulaire, la bobine à spirale, et le manchon céramique protègent l'élément de l'allumeur d'une détérioration ou d'une rupture accidentelle, et assurent un écoulement optimal du gaz et de l'air vers l'élément de l'allumeur, ce qui facilite l'allumage subséquent du gaz.

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