Induction heating apparatus for drink can

Details Induction heating apparatus for drink can Induction heating apparatus for drink can

1995-10-04

1997-11-25

Leung, Philip H.

Electric heating

Inductive heating

Specific heating application

219624, 219630, 219660, 219674, 221150A, H05B 610

Patent

active

056908512

ABSTRACT:
A drink can induction heating apparatus includes a ferrite core having a plurality of projected portions and recesses formed between the adjacent projected portions. When a drink can is set in a position to be heated, each of the projected portions is oriented toward a longitudinal axis of the drink can and a particular portion of a circumferential wall of the drink can. The apparatus further includes a saddle-shaped heating coil which is partly received in the recesses of the ferrite core and covers a region around the foregoing particular portions of the drink can in a non-contact manner, and an inverter for feeding the AC power to the heating coil. The inverter is arranged to produce the AC power at a resonance frequency which corresponds to one of 5 kHz to 15 kHz where equivalent resistance values of an aluminum can and a steel can approximate to each other.

REFERENCES:
patent: 2818483 (1957-12-01), Blume
patent: 4371768 (1983-02-01), Pozna
patent: 4704509 (1987-11-01), Hilmersson et al.
patent: 5350902 (1994-09-01), Fox et al.
patent: 5352871 (1994-10-01), Ross et al.

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