ENERGIZING HEATING APPARATUS

Japanese Patent JP2017199625

A

PROBLEM TO BE SOLVED: To provide an energizing heating apparatus that can efficiently continue energizing and heating in a stable state by a simple structure.SOLUTION: A top electrode 16 is arranged at a top part of a crucible 11 having conductivity, and a bottom electrode 19 is arranged at a bottom part of the crucible 11. The crucible 11 is heated by flowing DC currents to a space between the top electrode 16 and the bottom electrode 19, so that objects 12 to be heated such as aluminum stored in the crucible 11 are heated. With respect to a cross section orthogonal to a center shaft line 22 of the crucible 11, a cross sectional area of a peripheral wall 14 at the bottom part side of the crucible 11 is set smaller than a cross sectional area of the peripheral wall 14 at the top part side of the crucible. Further, the top electrode 16 is placed on a top surface 14a of the peripheral wall 14 of the crucible 11 and thereby the top electrode 16 is connected to the crucible 11. Rates of thermal expansion of the top electrode 16 and the crucible 11 are set to 1×10-10×10/K at a temperature of 500°C.SELECTED DRAWING: Figure 1

TAKEUCHI AKIHIRO
MIMA TATSUO
NONAKA NAOKI
KOIKE TAKAYUKI

JP2016091337A

November 02, 2017

April 28, 2016

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CHUBU ELECTRIC POWER
MINO KOGYO KK

H05B3/03; F27B14/10; F27B14/14; F27D11/02; H05B3/00

Makoto Onda
Hironobu Onda

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