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Heating cooker

A technology for cookers and heating parts, applied to electric heating fuel, lighting and heating equipment, electric/magnetic/electromagnetic heating, etc. It can solve the problems of low speed, heavy structure, and the inability of reverse rotation of shaded pole motors, etc.

Active Publication Date: 2019-08-23
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shaded pole motor has a large and heavy construction although the output is not too large
Shaded pole motors have poor efficiency and low speed
Shaded pole motors are not constructed for reverse rotation

Method used

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Examples

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Embodiment Construction

[0023] A heating cooker according to a first aspect of the present disclosure includes a heating chamber, a heating unit, a brushless motor, a main body control circuit, a DC power supply circuit, a motor control circuit, and a safety device.

[0024] The heating chamber accommodates the object to be heated. The heating unit heats the object to be heated in the heating chamber. The brushless motor is the drive source of the rotary drive mechanism included in the heating unit. The main body control circuit outputs a drive signal for the brushless motor. The DC power supply circuit provides DC power to the brushless motor. The motor control circuit controls the driving of the brushless motor according to the driving signal.

[0025] The safety device is composed of a wired logic circuit. The safety device includes: a rotation detection element configured to detect a rotation state of a rotor of the brushless motor and output a rotation detection signal; and a switch to disco...

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PUM

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Abstract

Disclosed is a heating cooker that is provided with a heating chamber, a heating unit, a brushless motor, a main body control circuit, a direct current power supply circuit, a motor control circuit, and a safety device. The brushless motor is a drive source for a rotation drive mechanism included in the heating unit. The main body control circuit outputs a drive signal for the brushless motor. Thedirect current power supply circuit supplies the brushless motor with direct current power. The motor control circuit controls drive of the brushless motor corresponding to the drive signal. The safety device comprises a wired logic circuit. The safety device has: a rotation detection element that is configured to detect the rotation state of a rotor of the brushless motor, and output a rotationdetection signal; and a switch that cuts off a power supply line connected to the direct current power supply circuit. The safety device controls the switch corresponding to the rotation detection signal and the drive signal. According to this embodiment of the present invention, the highly safe and highly reliable heating cooker using the brushless motor as the drive source for the rotation drivemechanism can be provided.

Description

technical field [0001] The present disclosure relates to a heating cooker, and more particularly to a safety device for a rotary drive mechanism included in the heating cooker. Background technique [0002] Conventionally, a heating cooker having three functions of high-frequency heating, radiation heating, and convection heating is known. This heating cooker has a motor for a cooling fan used to cool heat-generating components, a motor for a circulation fan used for convection heating, and a motor for driving a radiation mechanism for high-frequency heating. source. [0003] As these motors, since the structure is simple and inexpensive, a shaded-pole motor (shaded-pole motor) is generally used. However, the shaded pole motor has a large and heavy configuration although the output is not so large. Shaded pole motors have poor efficiency and low speed. Shaded pole motors are not constructed for reverse rotation. [0004] Instead of the shaded pole motor, a brushless DC ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C7/02F24C1/00F24C7/08
CPCF24C7/085H05B6/745H05B6/642H05B6/6473F24C7/08H02P6/16H03K19/21H05B6/6423
Inventor 大谷良介胜部浩幸要田正人山下诚一
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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