| 摘要 |
PURPOSE:To improve the accuracy of selecting a cooking sequence by mounting an ultrasonic vibrator on the side wall surface of a heating chamber, and directing an ultrasonic pulse to a food within the chamber in a short period to recognize the shape of the food. CONSTITUTION:A ultrasonic vibrator 15 is mounted on the side wall surface of a heating chamber 3. A control signal is transmitted from a CPU 14 to an ultrasonic wave transmission and reception control part 16 in a short period. By receiving the signal the ultrasonic vibrator 15 is intermittently operated at every minute rotational angle of a food 6 placed on a heating dish 4. The ultrasonic wave from the ultrasonic vibrator 15 is reflected on the surface of the food 6 and received by the ultrasonic vibrator 15. Then, the ultrasonic wave is amplified by the transmission and reception control part 16, and the control signal is sent to the CPU 14. The brief shape of the food 6 is recognized from the difference in time between the transmission and reception, and the sort of the food 6 and the optimal sequence of cooking are selected from the recognition together with other data from other sensors, and an output of a megnetron 1 is controlled by a magnetron control part 13.
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