Oven for non-metal melting

US7423242B2 · kind B2 · utility

Assignee

• DEUTSCHE SOLAR GMBH · DE

Inventors

• Marc Dietrich · Gießen, DE
• Bernhard Freudenberg · Coburg, DE
• Armin Muller · Freiberg, DE
• Jens Seidel · Mainz, DE
• Josef Stenzenberger · Freiberg, DE

Key dates

• Filing date: Apr 26, 2007
• Grant date: Sep 9, 2008
• Expiry date: May 19, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T117/1088
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Oven for non-metal melting, in particular silicon melting, with a housing enclosing an interior, at least one mould arranged in the interior for receiving a non-metal melt, at least one electrical heating device enclosing, at least partially, the at least one mould for influencing the temperature of the non-metal melt, and a power supply device connected in an electrically conductive manner to the at least one heating device for providing the heating device with a time-variable current I(t), wherein the current I(t) has a frequency of 0.1 Hz to 1000 Hz and the current I(t) is of a magnitude sufficient for setting a predetermined temperature of the non-metal melt, the currents in the plurality, where necessary, of heaters having a defined phase position in respect of one another.