Title:
CERAMIC HEATER
Document Type and Number:
Japanese Patent JP2955127
Kind Code:
B2
Abstract:
PURPOSE: To provide an excellent ceramic composed of a pair of electrodes and a conductive ceramic sintering, which is bonded porously by silicon carbide and has a specific resistance value, by performing heat emission while the temp. difference between the perimeters of sheath heater and the area free of sheath heater is nullified substantially.
CONSTITUTION: A conductive ceramic sintering constitutes a heater which emits heat using electric energy, wherein the specific resistance has a value between 0.1-100Ω.cm. The resultant ceramic heater 4 includes a plate-shaped ceramic sintering, electrode layers 2, 2 formed by fusion spray of Al material along the mating two edges of the rear surface of the sintering, and an insulative portion 1 formed on the front and rear surfaces of sintering 4a except where the electrode layers 2, 2 are provided. Further the heater 4 has electrode plates 3, 3 made of Al formed on the front surfaces of the electrode parts 2, 2 by means of ultrasonic welding process. Heat emission is conducted so that there is no temp. difference between the perimeters of the sheath heater and the area with no sheath heater.
Inventors:
INOE ZENICHI
MORYAMA TETSUO
MORYAMA TETSUO
Application Number:
JP18334392A
Publication Date:
October 04, 1999
Filing Date:
July 10, 1992
Export Citation:
Assignee:
SHAAPU KK
International Classes:
C04B35/565; C04B35/56; C04B38/00; C04B41/88; H05B3/14; (IPC1-7): H05B3/14; C04B35/565; C04B38/00; C04B41/88
Attorney, Agent or Firm:
Takaya Koike