Ceramic igniters and methods for using and producing same

Details Ceramic igniters and methods for using and producing same Ceramic igniters and methods for using and producing same

F - Mech Eng,Light,Heat,Weapons

23

Q

F23Q 7/22 (2006.01)

Patent

CA 2395754

Ceramic igniters are provided that comprise two cold zones with an interposed hot zone, the hot zone having an electrical path length of from 0.51 cm to about 2 cm. Igniters of the invention can effectively diffuse power density throughout the igniter hot zone region, without producing isolated temperature gradients which can lead to premature igniter degradation and failure. The invention also provides new methods for forming ceramic igniters.

La présente invention concerne des allumeurs en céramique comprenant deux zones froides prenant en sandwich une zone chaude dont la longueur du trajet électrique est comprise entre 0,51 cm et environ 2 cm. Les allumeurs de l'invention sont effectivement capables de diffuser la puissance volumique dans la totalité de la région de zone chaude, sans produire de gradients isolés de température susceptibles de conduire de façon précoce à une dégradation et à une défaillance de l'allumeur. L'invention concerne également des procédés de formation des allumeurs en céramique.

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