Resistance furnace

Abstract

A known resistance furnace comprises a tubular heating element having a vertically oriented longitudinal axis, which comprises a shell surface defined by an upper side and a lower side and surrounding a furnace chamber, and which is connected to at least two supply terminals by means of which heating current is introduced at power supply points into the heating element. Starting from the above, in order to provide an electric resistance furnace, in particular a high-performance resistance furnace which is characterized by small manufacturing and maintenance efforts and by a high operational reliability, and which permits the reproducible adjustment of an axially and radially homogeneous temperature profile within the furnace, it is suggested according to the invention that the supply terminals should comprise a surrounding upper annular collar (7) in the region of the upper side (11) and a surrounding lower annular collar (8) in the region of the lower side (12).

Dependencies are inferred from the claim text.