Induction heat cooking device
First Claim
1. An induction heat cooking device comprising:
- a top plate made of a material through which an infrared light is transmitted;
a heating coil for receiving a high frequency current to heat a cooking container placed on the top plate by induction;
an inverter circuit for providing the high frequency current to the heating coil;
an operation unit including an operation mode setting unit for setting an operation mode of the inverter circuit;
an infrared sensor for detecting an infrared light that is emitted from a bottom surface of the cooking container and transmitted through the top plate and outputting a voltage signal variable according to an intensity of the detected infrared light;
a control unit for controlling an output of the inverter circuit, based on an output of the infrared sensor and a setting inputted to the operation unit; and
a notification unit,wherein the operation mode includes a preheating mode for performing preheating before performing heating,wherein when the operation mode is set to a preheating mode, the control unit starts operation under the preheating mode for preheating the cooking container with a first heating output corresponding to the preheating mode, and wherein the control unit monitors a voltage difference between the voltage signal outputted from the infrared sensor under the preheating mode and a reference voltage signal outputted from the infrared sensor at a beginning of the preheating mode and, when the monitored voltage difference becomes equal to or larger than a first predetermined threshold value, the control unit causes the notification unit to notify a user that the preheating is finished, and changes the operation mode to a waiting mode for performing heating with a second heating output that is lower than the first heating output.
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Accused Products
Abstract
An induction heat cooking device is provided that finishes preheating in a short time and maintains the temperature obtained at the finish of the preheating. The induction heat cooking device includes a heating coil for heating a cooking container by induction, an inverter circuit for providing a high frequency current to the heating coil, an operation unit including an operation mode setting unit for setting an operation mode of the inverter circuit, an infrared sensor for detecting an infrared light that is emitted from a bottom surface of the cooking container, a control unit for controlling an output of the inverter circuit based on an output of the infrared sensor and a setting inputted to the operation unit, and a notification unit.
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Citations
15 Claims
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1. An induction heat cooking device comprising:
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a top plate made of a material through which an infrared light is transmitted; a heating coil for receiving a high frequency current to heat a cooking container placed on the top plate by induction; an inverter circuit for providing the high frequency current to the heating coil; an operation unit including an operation mode setting unit for setting an operation mode of the inverter circuit; an infrared sensor for detecting an infrared light that is emitted from a bottom surface of the cooking container and transmitted through the top plate and outputting a voltage signal variable according to an intensity of the detected infrared light; a control unit for controlling an output of the inverter circuit, based on an output of the infrared sensor and a setting inputted to the operation unit; and a notification unit, wherein the operation mode includes a preheating mode for performing preheating before performing heating, wherein when the operation mode is set to a preheating mode, the control unit starts operation under the preheating mode for preheating the cooking container with a first heating output corresponding to the preheating mode, and wherein the control unit monitors a voltage difference between the voltage signal outputted from the infrared sensor under the preheating mode and a reference voltage signal outputted from the infrared sensor at a beginning of the preheating mode and, when the monitored voltage difference becomes equal to or larger than a first predetermined threshold value, the control unit causes the notification unit to notify a user that the preheating is finished, and changes the operation mode to a waiting mode for performing heating with a second heating output that is lower than the first heating output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification