Ignition device for chemical oxygen generators

Details Ignition device for chemical oxygen generators Ignition device for chemical oxygen generators

C - Chemistry, Metallurgy

06

B

52/24, 52/34, 23

C06B 45/00 (2006.01) B24C 11/00 (2006.01) C06C 9/00 (2006.01)

Patent

CA 1234494

-8- ABSTRACT: AN IGNITION DEVICE FOR CHEMICAL OXYGEN GENERATORS Chemical oxygen generators are used in protective respiratory and resuscitation apparatus, in order to provide an oxygen supply. In chemical oxygen generat- ors the oxygen is present in a chemically combined form and, when needed, is released when igntion is triggered during the course of a chemical reaction. The ignition device formed from an igntion mixture is usually disposed in the top part of the chemical oxygen supply, present in the form of a candle. From here, after ignition, the reaction continues until the candle is spent. The igntion device of the invention remains thermally stable up to temperatures of at least 100°C, in order to safeguard the storage stability of the oxygen generators; nevertheless, the igntion devices can be activated by water and even by a momentary elevated temperature. The igntion composition comprises a mixture of an alkali metal-oxygen compound, combined with an oxygen- containing silicon compound, a percarbonate, a metal peroxide or superoxide.

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