Device for induction heating of a receptable and process for con

Details Device for induction heating of a receptable and process for con Device for induction heating of a receptable and process for con

1995-12-11

1998-09-15

Leung, Philip H.

Electric heating

Inductive heating

With heat exchange

219626, 219662, 219675, H05B 612, H05B 606

Patent

active

058082808

ABSTRACT:
Device for induction heating of cooking receptacles, of the type comprising at least two concentric induction coils supplied by a generator. Each induction coil (I.sub.1, I.sub.2, I.sub.3) is supplied by a separate generator (G.sub.1, G.sub.2, G.sub.3), the number of induction coils being equal to the number of supply generators. A control block (8) effects the independent operation of each supply generator (G.sub.1, G.sub.2, G.sub.3). The control block (8) is adapted to cause to operate according to a sequential order the supply generators (G.sub.1, G.sub.2, G.sub.3) during a detection step of the presence of a load on the corresponding induction coil (I.sub.1, I.sub.2, I.sub.3), starting with the generator (G.sub.1) corresponding to the innermost concentric induction coil (I.sub.1) and progressing to the outermost concentric induction coil covered by the receptacle (9) to be heated. The supply generators (G.sub.1, G.sub.2, G.sub.3) are identical to each other and have the same nominal power, for the modular replacement of one supply generator by another supply generator of the same characteristics.

REFERENCES:
patent: 2845377 (1958-07-01), Seulen et al.
patent: 3275784 (1966-09-01), Merritt
patent: 3704357 (1972-11-01), Moulin
patent: 4453067 (1984-06-01), Karklys et al.

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