Unit for conductively heatable melting

摘要

A melting and/or refining unit for conductively heatable melts, in particular glass melts, is provided. The melting and/or refining unit has a tank and at least one electrode. The electrode passes through an opening in a wall of the tank so as to be immersed in the conductively heatable melt. The melting and/or refining unit has an apparatus for reducing the local introduction of heating power into at least one region adjacent to the electrode.

主权项

1. A unit for a conductively heatable glass melt, comprising:
a tank having a wall with a wall opening therethrough, the wall having an inner surface that faces the conductively heatable glass melt; at least one electrode passing through the wall opening so as to be immersed in the conductively heatable glass melt; an apparatus for reducing the local introduction of heating power into at least one region of the wall, wherein the apparatus comprises at least one shielding device arranged in the conductively heatable glass melt adjacent to the at least one electrode, wherein the at least one shielding device is a shielding basket having a basket opening, an interior, an exterior, a lower boundary, and an upper boundary, wherein the at least one electrode passes through the basket opening, wherein at least a portion of the conductively heatable glass melt can be substantially enclosed in the interior of the shielding basket or can have a virtually unimpeded exchange between the interior and the exterior of the shielding basket, wherein the shielding basket is arranged so that the lower boundary faces the inner surface of the wall with the upper boundary immersed in the conductively heatable glass melt, and wherein the shielding basket reduces an electric field gradient that occurs in the conductively heatable glass melt immediately adjacent to the at least one electrode; and an electrical connection passing through the wall and electrically connecting the shielding basket to an outer region of the electrode.