US 2023/0403766 A1 · HEATING DEVICE FOR TRACKING RESONANCE FREQUENCY

Abstract

A heating device for tracking a resonance frequency includes a heating coil for heating a cooking appliance, a parallel resonance circuit including an inductor including the heating coil and a resonance capacitor resonating with the inductor, an inverter unit for supplying power to the parallel resonance circuit, a first current sensor for detecting an output current supplied from the inverter unit to the parallel resonance circuit, and a processor for controlling a driving frequency of the inverter unit so that a peak value of the output current detected by the first current sensor is smaller than a predetermined first threshold value.

Claims20

Dependent claims

A heating device comprising:

an inductor including a heating coil for heating a cooking appliance;
a parallel resonance circuit including the inductor, and a resonance capacitor resonating with the inductor;
an inverter unit for supplying power to the parallel resonance circuit;
a first current sensor for detecting an output current supplied from the inverter unit to the parallel resonance circuit;
and
a processor for controlling a driving frequency of the inverter unit so that a peak value of the output current detected by the first current sensor is smaller than a predetermined first threshold value.

3 more elements

A method, performed by a heating device having a parallel resonance circuit including an inductor including a heating coil for heating a cooking appliance and a resonance capacitor resonating with the inductor, of tracking a resonance frequency, the method comprising:

supplying power, by an inverter unit included in the heating device, to the parallel resonance circuit;
detecting, by a first current sensor included in the heating device, an output current supplied from the inverter unit to the parallel resonance circuit;
and
controlling, by a processor included in the heating device, a driving frequency of the inverter unit so that a peak value of the output current detected by the first current sensor is smaller than a predetermined first threshold value.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

18/238,396Filed 25 Aug 2023

Priority

JP 2021-02940326 Feb 2021

Published

14 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H05B 6/062
Control, e.g. of temperature, of power: for cooking plates or the like
H02J 50/10
Circuit arrangements or systems for wireless supply or distribution of electric power: using inductive coupling
H03H 3/04
For the manufacture of piezoelectric or electrostrictive resonators or networks: for obtaining desired frequency or temperature coefficient
H05B 6/1209
Cooking devices: induction cooking plates or the like and devices to be used in combination with them

Heating device for tracking resonance frequency

Life of this patent

Heating device for tracking resonance frequency

Life of this patent

Abstract

Claims20