Industrial electric heating furnaces – Induction furnace device – Having condition signaling means
Reexamination Certificate
2006-07-04
2006-07-04
Hoang, Tu (Department: 2832)
Industrial electric heating furnaces
Induction furnace device
Having condition signaling means
C373S148000
Reexamination Certificate
active
07072378
ABSTRACT:
An induction heating apparatus includes a measurement device for indicating an electrical resistance of a material to be heated. A controller is configured for energizing an inductor in response to the indicated resistance. An inductor may be energized with an alternating current, a characteristic of which may be selected in response to an indicated electrical resistance. Alternatively, a temperature of the material may be indicated via measuring the electrical resistance thereof and a characteristic of an alternating current for energizing the inductor may be selected in response to the temperature. Energizing the inductor may minimize the difference between a desired and indicated resistance or the difference between a desired and indicated temperature. A method of determining a temperature of at least one region of at least one material to be induction heated includes correlating a measured electrical resistance thereof to an average temperature thereof.
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Hawkes Grant L.
Morrison John L.
Richardson John G.
Battelle Energy Alliance, LLC
Hoang Tu
TraskBritt P.C.
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