Ceramic heater and process for producing the same

Details Ceramic heater and process for producing the same Ceramic heater and process for producing the same

1997-12-05

2000-10-10

Walberg, Teresa

Electric heating

Heating devices

Resistive element: igniter type

219544, 123145A, F23Q 722

Patent

active

061304107

ABSTRACT:
This ceramic heater is increased in bulk density and decreased in production cost by using an unsintered composite as an unsintered filling member filled in a protective pipe without application thereto of a filling pressure while preventing a heating element from deteriorating. In this ceramic heater, the heating element capable of heating by flowing electricity therethrough is disposed in the protective pipe, which is filled with the unsintered composite. In the unsintered composite, inorganic compound particles are disposed between insulating ceramic particles. In this ceramic heater, the heating element is fixed to the inner wall surface of the protective pipe with a heat-resistant glass layer. The heat-resistant glass layer is partially penetrated into the unsintered composite. The open end portion of the protective pipe is hermetically sealed with a heat-resistant sealing member while allowing extension of lead wires from the end portion of the protective pipe.

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