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US 10,455,646 B2Granted
Induction heating cooker
AssigneesMitsubishi Electric Corporation, Mitsubishi Electric Home Appliance Co., Ltd.
InventorsKoshiro Takano, Hayato Yoshino, Yuichiro Ito, Kenichiro Nishi
Life of this patent
Estimating the term…
Abstract
When an inverter circuit is driven with a predetermined driving frequency, an amount of current change of an input current or a coil current in a set period is detected, and high frequency power to be supplied from the inverter circuit to a heating coil is adjusted in accordance with the amount of current change.
Claims13
An induction heating cooker, comprising:
- a heating coil configured to inductively heat a pot;
- an inverter circuit configured to supply high frequency power to the heating coil;
- and
- a processor configured to control driving of the inverter circuit,
- wherein the processor is configured to:
- control the inverter circuit in accordance with a magnitude of an amount of current change of one of an input current to the inverter circuit and a coil current flowing through the heating coil in a measurement period, which is set in advance,
- determine an amount of adjustment of a drive signal of the inverter circuit in accordance with the magnitude of the amount of current change in the measurement period, and
- control the inverter circuit with the drive signal, which was adjusted by the amount of adjustment;
- and
- wherein the processor references a table in which information on a type and/or an amount of a content contained in the pot is set in advance for each of a plurality of amounts of current change, discriminates the type and/or the amount of the content based on the amount of current change with reference to the table, and determines the amount of adjustment corresponding to the type and/or the amount of the content.
7 more elements
Dependencies are inferred from the claim text.