The invention, and the molten glass is heated so that the temperature difference is not generated, the present invention relates to the provision of molten glass heating apparatus to suppress the fire homogenization of the molten glass.
Bokhapgwan having a lower branch (3) organized to be drawn substantially perpendicular to the horizontal direction 1, from the lower side of the upper branch pipe (2) and the host (1) that branches from the upper side of the host (1) a branch structure 220 and the lateral ends (2a) of the host (1) of the upper end (1a) electrode 4, the host (1) of the lower end (1b) electrode 5 and the upper branch pipe (2) installed in the installed to an electrode 6 provided on, and forming the electrode 4 and the electrode of claim for supplying a current between the 5 first current supply path 21 and the electrode 4 and the electrode 6 has a first heat conducting part 230 to form a second current supply path 22 for supplying a current between,
Bokhapgwan structure 220 is "0.4 <(host (1) the upper end (1a) and minute branch J and the side end portion (2a of the base upper end resistance and top minutes of current flowing between the (γ) with Ja engine 2 of ) resistance of the current flowing between the (β) with the sum / host (1), the molten glass is heated to be configured to meet the upper end (1a) and the resistance of the current flowing between (α) with the lower end (1b)) <0.8 "of It relates to a device (210).