| 摘要 |
The present invention relates to an induction heating cooker and a control method thereof, particularly, to an induction heating cooker having an oil temperature control function by using the amount of change in an operating frequency, and a control method thereof. The present invention comprises: a heating coil; an inverter unit to provide a high-frequency power to the heating coil; a driving unit to provide a signal for controlling an operation of the inverter unit; a detection unit to detect a value of current that flows through the heating coil; and a control unit to calculate an operating frequency of the driving unit according to the value of the current, to vary the operating frequency so that the heating coil maintains a constant output that corresponds to an output level, and to determine whether oil contained in a container placed on the heating coil is overheated by using the amount of change in the operating frequency. According to the present invention, the temperature status of oil can be directly detected based on the correlation between the temperature status of the bottom of the cooking container and the amount of change in the operating frequency without having an intermediate medium. In addition, the improvement of accuracy in detecting the temperature of oil, the decrease of the ignition risk of oil, and the maintenance or the control of the constant temperature of oil may be achieved. [Reference numerals] (40) Detection unit; (50) Driving unit; (60) Control unit; (70) Main microcomputer; (80) Operation unit; (90) Display unit |
