Glass melting furnace with control of scr condution time

Details Glass melting furnace with control of scr condution time Glass melting furnace with control of scr condution time

C - Chemistry, Metallurgy

03

B

307/5

C03B 5/027 (2006.01) G05D 23/19 (2006.01) G05F 1/66 (2006.01) H05B 3/00 (2006.01)

Patent

CA 1147784

ABSTRACT Method of melting vitreous materials, in which the thermal power to be supplied electrically to the vitreous mass is controlled by supplying the melting plant with the maximum electric power, for which the plant is rated, during pre-established intervals of time spaced by pre-established intervals of time during which no electric power is applied. The length of said intervals of time is equivalent to an integral number of cycles of the alternating voltage applied to the plant. The power control is obtained by changing the length of the intervals of time by means of a device incorporat- ing SCR switching circuitry. The power is either on or off during all of a particular cycle. There is no switching during a cycle.

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