Induction heating apparatus and methods of operation thereof

Details Induction heating apparatus and methods of operation thereof Induction heating apparatus and methods of operation thereof

2006-08-01

2006-08-01

Hoang, Tu (Department: 2832)

Industrial electric heating furnaces

Induction furnace device

Coreless

C373S007000, C373S138000

Reexamination Certificate

active

07085305

ABSTRACT:
Methods of operation of an induction melter include providing material within a cooled crucible proximate an inductor. A desired electromagnetic flux skin depth for heating the material within the crucible may be selected, and a frequency of an alternating current for energizing the inductor and for producing the desired skin depth may be selected. The alternating current frequency may be adjusted after energizing the inductor to maintain the desired electromagnetic flux skin depth. The desired skin depth may be substantially maintained as the temperature of the material varies. An induction heating apparatus includes a sensor configured to detect changes in at least one physical characteristic of a material to be heated in a crucible, and a controller configured for selectively varying a frequency of an alternating current for energizing an inductor at least partially in response to changes in the physical characteristic to be detected by the sensor.

REFERENCES:
patent: 3601717 (1971-08-01), Kuecken
patent: 3686460 (1972-08-01), Lamparter et al.
patent: 4280038 (1981-07-01), Havas et al.
patent: 4679007 (1987-07-01), Reese et al.
patent: 4738713 (1988-04-01), Stickle et al.
patent: 4866592 (1989-09-01), Fujii et al.
patent: 5109389 (1992-04-01), Stenzel
patent: 5165049 (1992-11-01), Rotman
patent: 5523631 (1996-06-01), Fishman et al.
patent: 5675476 (1997-10-01), Nostwick
patent: 5892790 (1999-04-01), Abiko et al.
patent: 5940427 (1999-08-01), Hurtgen et al.
patent: 6026050 (2000-02-01), Baker et al.
patent: 6078033 (2000-06-01), Bowers et al.
patent: 6144690 (2000-11-01), Kusamichi et al.
patent: 6163019 (2000-12-01), Green et al.
patent: 6174570 (2001-01-01), Dambrine et al.
patent: 6185243 (2001-02-01), Boen et al.
patent: 6255635 (2001-07-01), Thompson et al.
patent: 6307875 (2001-10-01), Tsuda et al.
patent: 6414982 (2002-07-01), Rake et al.
patent: 6618426 (2003-09-01), Ernst
patent: 6817212 (2004-11-01), Romer et al.
patent: 2005/0111518 (2005-05-01), Roach et al.
patent: 2005/0200442 (2005-09-01), Boen et al.
“IGBT Introduction Heating Generator,” MSI Automation Inc. <http://www.msiautomation.com/control-panell.html>, Nov. 2003, 2 pages.

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