Oven for non-metal melting

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

Reexamination Certificate

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Details

C219S422000, C219S424000, C219S426000, C219S539000, C219S541000, C219S552000, C219S553000, C373S117000, C373S118000, C373S128000, C373S129000, C373S134000, C117S217000, C117S222000

Reexamination Certificate

active

11740620

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.

REFERENCES:
patent: 2005/0087125 (2005-04-01), Muhe et al.
patent: 2005/0275144 (2005-12-01), Muhe et al.
patent: 32 01 181 (1983-07-01), None
patent: 10339402 (2005-04-01), None
patent: 103 49 339 (2005-06-01), None
patent: 1072696 (2001-01-01), None
patent: 156 133 (1922-02-01), None
patent: 7 49185 (1995-02-01), None
patent: 2002-243370 (2002-08-01), None

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