Patent ID: 11903115
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 5:
6. A heating cooker comprising:
a heating chamber configured to accommodate an object to be heated;
a heater configured to heat the object to be heated in the heating chamber;
a brushless motor being a drive source of a rotary drive mechanism included in the heater;
a body control circuit configured to output a drive signal for the brushless motor;
a direct current (DC) power supply circuit configured to supply a DC power to the brushless motor;
a motor control circuit configured to control a driving of the brushless motor in response to the drive signal; and
a wired logic circuit including:
a first abnormality detection circuit;
a second abnormality detection circuit;
a first sensor configured to detect a rotation state of a rotor of the brushless motor, and to output a first rotation detection signal;
a second sensor configured to detect the rotation state of the rotor of the brushless motor, and to output a second rotation detection signal;
a first switch coupled to a power supply line in series, the power supply line being coupled to the DC power supply circuit, the first switch being configured to block the power supply line; and
a second switch coupled to the power supply line in series, the second switch being configured to block the power supply line,

wherein the first abnormality detection circuit is configured to control the first switch in response to the drive signal and the first rotation detection signal, and
wherein the second abnormality detection circuit is configured to control the second switch in response to the drive signal and the second rotation detection signal.