Induction heating cooking apparatus, operation of which is...

Details Induction heating cooking apparatus, operation of which is... Induction heating cooking apparatus, operation of which is...

2006-07-11

2006-07-11

Leung, Philip H. (Department: 3742)

Electric heating

Inductive heating

With heat exchange

C219S665000, C219S668000, C219S518000

Reexamination Certificate

active

07075044

ABSTRACT:
An induction-heating cooking apparatus, operation of which is interrupted by container eccentricity is disclosed. Upon receiving an input signal varying with the degree of eccentricity of a container, the apparatus changes a reference signal for determining the presence or absence of a small load in proportion to a pulse-width control signal controlling the width of an inverter driving pulse. Although the eccentricity of the container occurs in a normal heating operation and completely escapes from a cook zone, the apparatus determines the occurrence of a no-load state, and interrupts an operation of an inverter circuit, resulting in increased stability of a circuit and a product.

REFERENCES:
patent: 4467165 (1984-08-01), Kiuchi et al.
patent: 4540866 (1985-09-01), Okuda

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