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US 4,792,652 AGranted
Electric induction cooking appliance with reduced harmonic emission
AssigneeElectricite de France (Service National)
InventorsMichel Seguy, Michel Bisson
Life of this patent
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Abstract
Electric induction cooking appliance comprising a support for a vessel (C) to be heated and at least one flat inductor intended to be fed by a frequency convertor, characterized in that the inductor consists of a first coil (4) having a first sense and of at least one second coil (5) formed of at least one turn of opposite sense to that of the first coil.
Claims2
Induction heating assembly for an electric induction cooking appliance and comprising a support for a vessel to be heated and at least one flat inductor having a center, connectable to a current-supplying frequency converter;
- said inductor being constituted by a first coil, having a first winding direction, and by at least one second coil which is formed of at least one turn having a second winding direction opposite to that of said first coil and which is connected in series with said first coil;
- said first and second coils being of generally circular shape and being disposed in an arrangement symmetrical relative to said center of said inductor;
- wherein said first coil and said at least one second coil of said inductor comprise six coils of circular shape and arranged side-by-side around a circumference, two neighbouring coils having opposite winding directions, respectively;
- wherein said six coils arranged on the circumference constitute peripheral coils, and wherein said assembly includes, in addition, two central coils surrounded by said peripheral coils and wound in semi-circles, said central coils having opposite winding directions, respectively, and having straight sides which are opposite each other.
1 more element
Dependencies are inferred from the claim text.