Patent application number | Description | Published |
20090001072 | Induction Heating Cooker - An induction heating cooker including a top plate where a pan is placed; a heating coil for induction heating the pan; an inverter circuit for supplying a high frequency current to the heating coil; an infrared sensor, which is arranged under the heating coil and detects an infrared light radiated from the pan; a light guiding part including an upper opening formed at an upper end facing the top plate and a lower opening formed at a lower end, and guiding the infrared light from the pan to the infrared sensor; and a control unit for controlling an output of the inverter circuit according to an output from the infrared sensor; wherein the light guiding part includes a nonmetallic material part in which the upper opening is formed upper than a lower surface of the heating coil. | 01-01-2009 |
20090014438 | INDUCTION HEATING COOKING DEVICE - There is provided an induction heating cooking device capable of enhancing detection sensitivity of higher temperatures in cases of using a small amount of oil and capable of preventing reduction of the heating output in cases of cooking at relatively lower temperatures. | 01-15-2009 |
20090152260 | INDUCTION HEATING DEVICE - An induction heating device includes a top plate arranged to have an object placed thereon, a heating coil receiving a high-frequency current to inductively heat the object, an infrared ray sensor for outputting a signal in accordance with energy of received infrared ray, a temperature detector for detecting a temperature of the object based on the signal output from the infrared ray sensor, a heating controller for controlling the high-frequency current supplied to the heating coil based on the detected temperature, and a failure determining unit for determining whether the infrared ray sensor has a failure or not. This induction heating device can detect the failure of the infrared ray sensor, and thus stops or suppresses the heating upon detecting the failure of the infrared ray sensor. | 06-18-2009 |
20100051608 | INDUCTION COOKING DEVICE - There is provided an induction cooking device for achieving high heating power at the time of high temperature cooking while ensuring safety. An induction cooking device includes a heating coil ( | 03-04-2010 |
20100065551 | INDUCTION COOKING DEVICE - An infrared sensor | 03-18-2010 |
20110000903 | INDUCTION HEAT COOKING DEVICE - 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 ( | 01-06-2011 |
20110000904 | INDUCTION HEAT COOKING DEVICE - 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. When a preheating heating mode is selected as an operation mode, a control unit ( | 01-06-2011 |
20110315675 | INDUCTION HEATING COOKER - There are provided amplifying part ( | 12-29-2011 |
20120000904 | INDUCTION HEATING COOKER - There is provided a placement position determining part that calculates a rising gradient of an output value of the infrared sensor every after passage of a first predetermined time and performs a placement position determining operation of determining that a placement position of a cooking vessel is improper when the rising gradient is smaller than a first threshold value, and the placement position determining part performs the placement position determining operation after a lapse of a second predetermined time from the start of heating, thereby accurately determining that the cooking vessel is improperly placed on a top plate and preventing overheating of the cooking vessel. | 01-05-2012 |
20120037614 | INDUCTION HEATING COOKER - An induction heating cooker including a heating coil, a top plate, an inverter circuit, a temperature sensor provided under the top plate and detecting a bottom temperature of the pot load, an inverter circuit for supplying a high frequency current to the heating coil, a temperature calculating part for calculating the bottom temperature of the pot load based on an output of the temperature sensor, a setting part for a user to set a cooking temperature freely therewith, a controller for controlling an output of the inverter circuit make the bottom temperature of the pot load calculated by the temperature calculating part match the cooking temperature, a cumulative electric power measuring part for measuring a cumulative electric power value of an electric power supplied to the pot load during a second predetermined time period at intervals of a first predetermined time period, and a adjusting part adjusting the cooking temperature to a higher temperature by a second predetermined value when an increased amount of the cumulative electric power value as compared to another cumulative electric power value measured before a third predetermined time period is larger than a first predetermined value. | 02-16-2012 |
20120061381 | INDUCTION COOKING DEVICE - First material discriminating unit for comparing a magnitude of an input current to inverter circuit and a magnitude of a heating coil current to discriminate a material of cooking container between a non-magnetic body and a magnetic body; second material discriminating unit for comparing a magnitude of the heating coil current and an ON time of switching element when discriminated as the magnetic body by first material discriminating unit to discriminate the material of cooking container as magnetic SUS or iron are arranged, where control unit sets a control temperature lower when the material is discriminated as magnetic SUS by second material discriminating unit than when the material is discriminated as iron so that the temperature of cooking container can be controlled to a predetermined temperature at high accuracy even if cooking container is configured by magnetic SUS, similar to when configured by iron. | 03-15-2012 |