УСТРОЙСТВО ДЛЯ НАГРЕВАНИЯ КУРИТЕЛЬНОГО МАТЕРИАЛА

Настоящим изобретением раскрывается устройство (100, 200) для нагревания курительного материала с целью испарения по меньшей мере одного компонента курительного материала. Устройство (100, 200) включает в себя: зону нагрева (111), в которую вставляется по меньшей мере часть элемента, содержащего курительный материал; выпускное отверстие (122) для выхода испаренных компонентов курительного материала из зоны нагрева (111) в область снаружи устройства (100, 200), когда курительный элемент во время работы нагревается в зоне нагрева (111); нагревательный элемент (115, 130), нагреваемый за счет воздействия изменяющегося магнитного поля с целью нагревания зоны нагрева (111), первая часть (115a, 130a) которого расположена между второй частью (115b, 130b) нагревательного элемента (115,130) и выпускным отверстием (122), причем вторая часть (115b, 130b) нагревательного элемента (115, 130) во время работы нагревается за счет теплопроводности от первой части (115a, 130a) нагревательного элемента (115 ...

УСТРОЙСТВО ДЛЯ ИСПАРЕНИЯ ЛЕТУЧЕГО МАТЕРИАЛА

Группа изобретений относится к области устройств для распространения рабочих веществ в окружающую среду. Устройство для испарения летучей текучей субстанции содержит испарительное устройство и сменный элемент. Испарительное устройство и сменный элемент являются разделяемыми друг от друга. Испарительное устройство содержит магнитную катушку индуктивности. Сменный элемент содержит магнитный приемник тока и непроницаемый для жидкости герметичный резервуар с летучим материалом. Во время работы магнитный приемник тока обеспечивает нагрев материала преимущественно магнитным гистерезисом. Нагрев осуществляется при нахождении магнитного приемника тока в индуцированном магнитном поле, созданном при пропускании переменного тока через индукционную катушку. Обеспечивается возможность испарения рабочих веществ с помощью нагрева магнитным гистерезисом. 4 н. и 86 з.п. ф-лы, 10 ил.

Устройство для управления индуктором

Полезная модель относится к области электротехники и может быть использована в системах индукционной закалки, осуществляющих нагрев быстродвижущихся шарообразных заготовок, габариты которых близки к габаритам индуктора, в частности нагрев стальных мелющих шаров и шариков подшипников качения.Устройство содержит однофазный мостовой инвертор на силовых транзисторах, конденсатор в звене постоянного тока инвертора, согласующий трансформатор, компенсирующий конденсатор, датчик тока индуктора, обмотку индуктора, датчик напряжения индуктора, блок вычисления эквивалентной индуктивности и активного сопротивления заготовки в индукторе, блок вычисления резонансной частоты индуктора, блок определения действующего значения тока индуктора, блок ограничения заданной частоты тока индуктора, первый блок деления, блок вычисления квадратного корня, регулятор тока индуктора, блок сравнения, блок интегрирования, блок суммирования, блок умножения, второй блок деления, блок формирования управляющих импульсов силовых ...

НАГРЕВАТЕЛЬНОЕ УСТРОЙСТВО И ХОЛОДИЛЬНИК С НАГРЕВАТЕЛЬНЫМ УСТРОЙСТВОМ

Изобретение относится к кухонным устройствам и, в частности, относится к нагревательному устройству с использованием электромагнитных волн и холодильнику с нагревательным устройством. Технический результат - создание нагревательного устройства, обеспечивающего точное определение нагревательного процесса, а также обеспечение легкой резки нагретых пищевых продуктов. Технический результат достигается тем, что нагревательное устройство (100) включает в себя цилиндрический корпус (110), содержащий отверстие для загрузки и размещения, корпус (120) двери, выполненный с возможностью открытия и закрытия отверстия для загрузки и размещения, систему генерации электромагнитных волн, по меньшей мере, часть которой расположена в цилиндрическом корпусе (110), и устройство для измерения температуры. Устройство для измерения температуры включает в себя часть (171) для измерения сигналов и часть (172) для обработки сигналов, причем часть (171) для измерения сигналов выполнена с возможностью измерения конкретных ...

ЦЕПЬ УПРАВЛЕНИЯ ВЫСОКОЧАСТОТНОЙ ЭЛЕКТРОМАГНИТНОЙ ИНДУКЦИЕЙ

Изобретение относится к области электротехники, в частности к средствам управления высокочастотной электромагнитной индукцией. Технический результат заключается в создании индуцированного магнитного поля для нагрева металла. Достигается тем, что цепь управления высокочастотной электромагнитной индукцией включает в себя цепь управления зарядкой, цепь управления и защиты батареи, аккумуляторную батарею, главный управляющий микроконтроллер, цепь управления дисплеем, цепь управления клавиатурой, цепь привода, цепь высокочастотного нагрева и цепь индукционного нагрева, при этом цепь управления и защиты аккумулятора сконфигурирована таким образом, чтобы определять, соответствуют ли напряжение зарядки и зарядный ток существующим требованиям, аккумуляторная батарея обеспечивает питание главного управляющего микроконтроллера, а главный управляющий микроконтроллер сконфигурирован для определения входного напряжения батареи, а цепь управления дисплеем посылает сигнал о том, находится ли батарея в ...

СИСТЕМЫ ПРЕДОСТАВЛЕНИЯ АЭРОЗОЛЯ

Группа изобретений относится к табачной промышленности, а именно к системе предоставления аэрозоля. Электронная система предоставления пара содержит компонент для вдыхания, выполненный с возможностью выработки пара из исходного материала, и основной блок, с которым компонент для вдыхания по выбору может быть соединен и от которого компонент для вдыхания может быть отсоединен. Основной блок выполнен с возможностью выявления идентификатора для компонента для вдыхания и, когда компонент для вдыхания соединен с основным блоком, для предоставления компоненту для вдыхания некоторого количества расходного материала для использования компонентом для вдыхания с целью выработки пара для вдыхания пользователем тогда, когда компонент для вдыхания отсоединен от основного блока. Основной блок дополнительно выполнен с возможностью создания записи идентификатора для компонента для вдыхания в сочетании с указанием предоставленного компоненту для вдыхания расходного материала, который включает в себя энергию ...

ЭЛЕКТРОННАЯ СХЕМА ДЛЯ ИНДУКЦИОННОГО ЭЛЕМЕНТА В ГЕНЕРИРУЮЩЕМ АЭРОЗОЛЬ УСТРОЙСТВЕ

Представлена электронная схема для индукционного элемента в генерирующем аэрозоль устройстве. Индукционный элемент обеспечивает индукционный нагрев токоприемника, нагревающего аэрозольобразующий материал при использовании. Электронная схема содержит драйвер, выполненный с возможностью преобразования входного постоянного тока в переменный ток для приведения в действие индукционного элемента. Драйвер содержит несколько транзисторов, расположенных в конфигурации H-моста, имеющего пару транзисторов верхнего плеча и пару транзисторов нижнего плеча, причем при использовании к паре транзисторов верхнего плеча подается первый электрический потенциал, превышающий второй электрический потенциал, который подается к паре транзисторов нижнего плеча. По меньшей мере, один транзистор из пары транзисторов верхнего плеча представляет собой p-канальный полевой транзистор. Также представлено генерирующее аэрозоль устройство, содержащее электронную схему для индукционного элемента. Технический результат заключается ...

СКАНИРУЮЩИЙ ИНДУКЦИОННЫЙ НАГРЕВ

... 1. Устройство для индукционного нагрева изделия, содержащее:источник питания, имеющий выход переменного тока с управлением широтно-импупьсной модуляцией;индуктор, присоединенный к выходу переменного тока для создания магнитного поля переменного тока;средство для перемещения изделия сквозь индуктор для магнитной связи выбранных частей изделия с магнитным полем;средство для выборочного регулирования частоты выходного переменного тока, когда каждая из выбранных частей связана с магнитным полем для индукционной термообработки; исредство для выборочного регулирования мощности выходного переменного тока путем изменения скважности выходного переменного тока, когда каждая из выбранных частей связана с магнитным полем для индукционной термообработки и частота выходного переменного тока регулируется.2. Устройство по п.1, содержащее средство для выборочного регулирования периода времени, в течение которого каждая из выбранных частей связана с магнитным полем для индукционной термообработки.3. Устройство ...

УСТРОЙСТВО ДЛЯ ИСПАРЕНИЯ ЛЕТУЧЕЙ ТЕКУЧЕЙ СУБСТАНЦИИ

... 1. Сборное устройство для испарения летучей текучей субстанции, при этом сборное устройство содержит устройство и сменный элемент, которые являются разделяемыми друг от друга,в котором устройство содержит магнитную катушку индуктивности, сконфигурированную для работы с пропущенным через нее переменным током на частоте между по существу 20 кГц и до по существу 500 кГц,и в котором сменный элемент содержит резервуар для летучей текучей субстанции, средство переноса летучей текучей субстанции, чтобы втягивать эту текучую субстанцию из резервуара, и по меньшей мере один магнитный приемник тока, предназначенный для нагрева средства переноса летучей текучей субстанции, преимущественно обусловленного магнитным гистерезисом, когда через катушку индуктивности пропущен упомянутый переменный ток, при этом магнитный приемник тока имеет коэрцитивную силу Нот по существу 50 ампер на метр до по существу 1500 ампер на метр.2. Сборное устройство по п. 1, в котором какой-либо дополнительный нагрев вихревыми ...

ИНДУЦИРОВАНИЕ ТЕПЛОТЫ ВРАЩАЮЩИМСЯ МАГНИТОМ

Изобретение относится к области индукционного нагрева. Нагреватель с вращающимся магнитом для металлических изделий, таких как алюминиевая полоса, может содержать роторы с постоянными магнитами, расположенные над и под движущейся металлической полосой, чтобы вызывать движущиеся или изменяющиеся во времени магнитные поля через металлическую полосу. Изменяющиеся магнитные поля могут создавать токи (например, вихревые токи) внутри металлической полосы, нагревая таким образом металлическую полосу. Набор магнитных роторов может содержать пару согласованных магнитных роторов на противоположных сторонах металлической полосы, которые вращаются с одинаковой скоростью. Каждый магнитный ротор из набора может быть расположен на равном расстоянии от металлической полосы, чтобы избежать отклонения металлической полосы от технологической оси. Задний по ходу набор магнитных роторов может быть применен в непосредственной близости к переднему по ходу набору магнитных роторов для компенсации натяжения, вызванного ...

ИЗДЕЛИЕ, ГЕНЕРИРУЮЩЕЕ АЭРОЗОЛЬ,С ТОКОПРИЕМНИКОМ, СОСТОЯЩИМ ИЗ НЕСКОЛЬКИХ МАТЕРИАЛОВ

Изделие, генерирующее аэрозоль, содержит субстрат, образующий аэрозоль, и токоприемник для нагрева субстрата, образующего аэрозоль. Токоприемник содержит первый материал токоприемника и второй материал токоприемника, имеющий температуру Кюри, при этом первый материал токоприемника расположен в непосредственном физическом контакте со вторым материалом токоприемника. Первый материал токоприемника может также иметь температуру Кюри, при этом вторая температура Кюри ниже 500°C и ниже температуры Кюри первого материала токоприемника, если первый материал токоприемника имеет температуру Кюри. Использование данного токоприемника, состоящего из нескольких материалов, позволяет оптимизировать нагрев и управлять температурой токоприемника до уровня приблизительно второй температуры Кюри без необходимости непосредственного отслеживания температуры. 3 н. и 12 з.п. ф-лы, 7 ил.

УСТРОЙСТВО ДЛЯ НАГРЕВА ОБРАЗУЮЩЕГО ДЫМ МАТЕРИАЛА

СИСТЕМА, ГЕНЕРИРУЮЩАЯ АЭРОЗОЛЬ, С МНОЖЕСТВОМ ТОКОПРИЕМНИКОВ

УСТРОЙСТВО ДЛЯ ГЕНЕРИРОВАНИЯ АЭРОЗОЛЯ И СПОСОБ УПРАВЛЕНИЯ ТАКИМ УСТРОЙСТВОМ

УСТРОЙСТВО ДЛЯ НАГРЕВА ОБРАЗУЮЩЕГО ДЫМ МАТЕРИАЛА

СПОСОБ НАГРЕВА ЖИДКОГО МЕТАЛЛА И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к металлургии и электротехнике, в частности к устройствам и методам нагрева жидкого металла, основанным на применении электромагнитного воздействия. Устройство содержит кольцевой канал, выполненный огнеупорным, индуктор с магнитопроводом и токовой обмоткой, замкнутый вокруг кольцевого канала, выполненный подключаемым к источнику переменного напряжения, источник питания для питания токовой обмотки, при этом кольцевой канал выполнен открытым и соединен с входным каналом и выходным каналом для обеспечения возможности пропускания жидкого металла, при этом входной и выходной каналы выполнены с возможностью соединения с транспортным желобом, магнитопровод индуктора выполнен разборным, кольцевой канал выполнен горизонтальным, источник питания содержит инвертор на базе транзисторов с согласующим контуром, при этом токовая обмотка выполнена с возможностью применения широтно-импульсной модуляции для управления величиной действующего значения электрического тока. Способ включает ...

Elektrische Heizvorichtung mit Anschlussdraht

Elektrische Heizvorrichtung (100, 200, 300, 1600, 1700, 2200) mit einem äußeren Mantel (101, 201, 301, 1601, 1701, 2201) und einem zumindest abschnittsweise innerhalb des äußeren Mantels (101, 201, 301, 1601, 1701, 2201) angeordneten elektrischen Heizelement (102, 202, 302, 2202), das über mindestens einen Anschlussdraht (106, 107, 206, 207, 306, 307, 406, 506, 606, 706, 806, 906, 1006, 1106, 1206, 1306, 1406, 1506, 1606, 1607, 1608, 1706, 1806, 2206, 2207) mit elektrischem Strom versorgbar ist, dadurch gekennzeichnet, dass der Anschlussdraht (106, 107, 206, 207, 306, 307, 406, 506, 606, 706, 806, 906, 1006, 1106, 1206, 1306, 1406, 1506, 1606, 1607, 1608, 1706, 1806, 2206, 2207) einen Hohlraum aufweist, in den ein Abschnitt (104, 105, 204, 205, 2204, 2205) des elektrischen Heizelements (102, 202, 2202) oder eine elektrische Zuleitung (330, 331) zum elektrischen Heizelement (302) aufgenommen ist.

VERFAHREN UND ANORDNUNG ZUM STEUERN DER AUSGANGSLEISTUNG EINES WIDERSTANDSHEIZELEMENTS

A method for preserving the temperature of food for distribution has conductive sheets over induction coils for each dish controlled by a monitor and computer system

A metallic housing (100) has multiple shelves (10- 12) having induction coils (20-22) connected in series to a waveform generator (4) and having conductive sheets (30-32) holding plates of food. A measuring system (1) determines the total value of the induction current and a computer (2) controls the output.

Anordnung zur Regelung auf konstante Betriebsbedingungen bei Induktions-, Schmelz- und Gluehanlagen mit einem Resonanzkreis als Regelglied

Induktionsheizverfahren

... [Aufgabe] Eine Aufgabe besteht darin, ein Induktionsheizverfahren anzugeben, das einen hohen Leistungsfaktor hat, bei dem es, wenn die Wärmebehandlung durch eine Vielzahl von Heizspulen ausgeführt wird, die die Zufuhr des Stromes empfangen, um eine wechselseitige Induktion zu erzeugen, möglich ist, einfach und schnell die Synchronisationssteuerung an einem Spulenstrom auszuführen, und bei dem, wenn der Strom variiert wird, auch wenn die Geschwindigkeit der Steuerung des Stromwertes erhöht wird, dies einen Wechselrichter-Phasenwinkel geringfügig beeinträchtigt. [Mittel zur Lösung] Bei einem Induktionsheizverfahren, das eine Induktionsheizvorrichtung verwendet, die einen zu erwärmenden Gegenstand erwärmt, und eine Vielzahl von Eigenresonanzschaltkreisen umfasst, mit denen eine Resonanzhochfrequenz-Stromversorgung verbunden ist, die Ströme gleicher Frequenz einer Vielzahl von Heizspulen zuführt, die die Zufuhr des Stroms empfangen, um eine wechselseitige Induktion zu erzeugen, werden die Phasen ...

Bridging prevention system for induction melting furnace - has wall temp. sensors connected to alarm, preventing furnace wall damage caused by metal bridge formation

A bridging prevention system comprises (a) temp. sensors (31) embedded in the refractory material (5) of the furnace side and bottom walls; (b) a device for comparing the temp. detected by each sensor with a predetermined value; and (c) a device for producing an alarm when at least one of the temps. is the same as or greater than the predetermined value. In a similar system, in which the furnace has a break-out antenna and a breakout alarm, the break-out alarm is actuated when, because of refractory material wear, molten metal contacts one or more of the temp. sensors (31). Also claimed are similar systems, including electrical parameter detectors and logic circuits, are also claimed. ADVANTAGE - Furnace wall damage by continuous heating, caused by metal bridge formation is prevented.

VERFAHREN ZUR LOKALEN WÄRMEBEHANDLUNG FüR KOLLISIONSTEILE VON FAHRZEUGEN UNTER VERWENDUNG VON HOCHFREQUENZSIGNALEN

Ein Verfahren zum lokalen Erweichen von Kollisionskomponenten eines Fahrzeugs wird bereitgestellt. Das Verfahren umfasst die Erzeugung einer Hochfrequenz unter Verwendung eines Hochfrequenzgenerators und die Extraktion einer abschließenden Frequenz und eines angepassten Ausgangs unter Verwendung der Hochfrequenz über eine Steuerbox, die einen Kondensator und einen Induktor umfasst. Die Wärmebehandlungsabschnitte der Komponente werden lokal erweicht, indem die Wärmebehandlungsabschnitte bei einer Temperatur von ungefähr 400 bis 550°C erwärmt werden, indem ein induzierter Strom unter Verwendung der abschließenden Frequenz und des angepassten Ausgangs durch eine Hochfrequenzspule erzeugt wird.

Einrichtung zum Betrieb eines elektrischen Induktionsofens

Inverter control circuit used in HF heating device

An inverter control circuit for HF heating has a detector 300 for the current entering the inverter 200 from a mains-fed rectifier 100 with a microcomputer 400 receiving the detector's output signal. The microcomputer then gives out first and second ON signals as well as a timing signal to control the inverter's switching. There is a detector 500 for the inverter input voltage and which gives a resonance detection signal depending on a given time lag setting signal. The latter is given by a driver control circuit 600, which also gives first and second control signals in response to the resonance signal and the three microcomputer output signals. The inverter driver 700 gives the driver signals to the inverter in response to the driver control signals.

Electric cooker has power stage generating medium frequency alternating current suitable for induction heater and for supplying all heaters with required electrical power for heating

The cooker has a cooking oven (2) and at least one cooking point (6), each with a heater (8,12,14,15a,16), and a power stage (10) for generating a medium frequency alternating current suitable for supplying an induction heater. The power stage is suitable for supplying all heaters with the required electrical power for heating. At least one cooking point can be inductively heated.

Induktionswärmflasche

Das Befüllen von Wärmflaschen ist mit Gefahren für den Anwender verbunden. Beim Einfüllen der heißen Flüssigkeit in die Einfüllöffnung können Verbrühungen durch Verschütten der Flüssigkeit beim Anwender auftreten. Überdies muss die Flüssigkeit in ein weiteres Gefäß umgefüllt werden, um diese erneut zu erhitzen.Der aktuelle Stand der Technik versucht dieses Problem durch das Einbringen von Heizstäben in die Wärmflasche zu lösen. Nachteilig ist hierbei die verminderte Plastizität der Wärmflasche, sowie die erforderlichen Hilfskomponenten wie Kabel und Dockingstationen.Überdies werden Wärmflaschen in Mikrowellenöfen erhitzt. Als nachteilig ergibt sich die maximale Größe der Wärmflasche, welche durch das Innenvolumen des Mikrowellenofens vorgegeben wird. Fehlbedienungen durch den Anwender, werden mangels Regelmechanismen nicht abgefangen. Hierdurch entstehen Gefahren für die Einrichtungen und den Anwender.Die vorliegende Erfindung erhitzt die Flüssigkeit über das bekannte Prinzip der induktiven ...

Anregungsanordnung für Induktionsöfen

Verfahren zur Erwärmung von Speisen und/oder Wasser in Flugzeugen mittels Induktionserwärmung, bei dem mehrere einen Induktor (115, 125, 135) aufweisende Lastkreise (119, 129, 139) mit einer Lastkreiswechselspannung (U3) und/oder einem Lastkreiswechselstrom angeregt werden, wobei die Lastkreiswechselspannung (U3) und/oder der Lastkreiswechselstrom aus einem mit einer Netzfrequenz amplitudenmodulierten Wechselspannungssignal einer vorgebbaren Frequenz erzeugt wird, wobei aus einer Wechselspannung (U) eines Mehrphasenspannungsnetzes mehrere Hilfsspannungen erzeugt werden, wobei jeweils eine der Hilfsspannungen einem der Wechselspannungserzeuger (117, 127, 137) und/oder einer diesen Wechselspannungserzeuger (117, 127, 137) ansteuernden Steuerung zugeführt werden, oder aus einer Wechselspannung eines Mehrphasenspannungsnetzes eine Hilfsspannung erzeugt wird, die einer Zentralsteuerung (152), zugeführt wird, wobei die Zentralsteuerung (152) mehrere Wechselspannungserzeuger (117, 127, 137) ansteuert ...

EINRICHTUNG UND VERFAHREN ZUM INDUKTIONSHAERTEN VON VENTILSITZEN, INSBESONDERE AN BRENNKRAFTMASCHINEN

Electronic vapour inhalers

Magnetic heating system

Selectable resonant frequency transcutaneous energy transfer system

Circuitry for an induction element for an aerosol generating device

Improvements in or relating to a method and apparatus for Induction Heating

... 1,168,100. Electrically heated rollers. ONDERZOEKINGSINSTITUUT RESEARCH N.V. 28 April, 1967 [30 April, 1966], No. 19691/67. Heading F2V. [Also in Divisions D1 and H5] A heated roller shell 1, 62, is inductively heated upon the setting up of a rotating magnetic field which " cuts " electrically conductive members, such as copper or aluminium rods 12, 13 or 57, in thermal contact with the shell, whereby the induced currents are forced to flow in a particular direction. Rods 12, 13 are interconnected by short-circuiting rings 14, 15. Current intensity is measured inductively by a coil 24 and is used to automatically control the shell temperature. Shell 1 is a tube of steel, or mutually insulated laminations, and is supported by discs 2, 3, and driven by a shaft 4. A stator 18 with three-phase winding 19, 20, and axially extending cooling channels 22, 23, forms the inducing part. Rods 12, 13 are positioned in axially extending grooves in the inner surface of shell 1. The heated roller is used ...

Electrical heating system for a section of fluid transport pipe, section and pipe equipment with such an electrical heating system

Improvements in or relating to induction heating circuits for cooking appliances

A pan sensing circuit 7 responds to current flow through a pan heating coil L2 during periods when a GTO thyristor VT1, or a bipolar device, is non-conducting, the circuit 7 inhibiting a return of thyristor VT1 to conduction unless the sensed current indicates the presence of a suitable utensil. An interrogation circuit 11 allows turn on of thyristor VT1 at one second intervals until a suitable utensil is sensed. In normal operation thyristor VT1 is turned off when a current sensor 8 senses a rise in current to a predetermined level. Thyristor VT1 is turned on again when the current through the coil L2 reverses as sensed by a saturating current transformer T1 and a voltage detector 13. Pan sensor 7 detects the current through a freewheeling diode D1. A controller 9 sets the mark/space ratio of a generator 10 outside the limited range of power control obtainable by sensing current using circuit 8. Operation is inhibited if a protection circuit 12 senses an incorrect operating potential in ...

Improvements in or relating to electrical cooking and like appliances

... 613,484. Electromagnetic induction heating. ARNOT, A. E. R., and SHAY, Ltd., J. E. July 13, 1946, No. 17776. [Class 39 (iii)] [Also in Group XXXVII] In apparatus for heating irons, kettles and like appliances by electromagnetic induction and comprising means for automatically opening and closing the circuit of an electromagnet 14 when the appliance is laid in place and lifted respectively, the electromagnet is movably mounted on a base 13 by means of four parallel spring-arms 34 so as to move downwardly when an iron 11 or the like is placed on it and return when the iron is lifted. The current to the electromagnet is controlled by a switch (see Group XXXVII) comprising a small horseshoe magnet 15 which is attracted towards the magnetic body 11 of the iron when in position so as to close a pair of switch contacts in series with the electromagnet, and the initial upward movement of the iron and electromagnet together releases the horseshoe magnet 45 and cuts off the current thereby destroying ...

HIGH-FREQUENCY HEATING APPARATUS HAVING DIGITAL CONTROLLED INVERTER

Inverter for induction cooker

In an induction heating circuit for a cooking appliance, a pan heating coil (L2) is powered at values determined by the state of conduction of a gate turn-off thyristor (VT1). To reduce the amplitude of current flow through the thyristor at turn-on, a circuit responsive to the voltage across a capacitor (CR) that resonates the pan coil (L2) is employed. The circuit is coupled to the resonant circuit comprising pan coil (L2) and capacitor (CR) by a saturating transformer (T1) and senses the instant when the current flow reverses, which point indicates the capacitor voitage 15 reaching a minimum. This information is used to turn-on the thyristor (VT1). ...

Device for evaporating a volatile material

Cooking apparatus, controller and method for controlling a cooker

Disclosed is a cooking apparatus, a controller and a method for controlling a cooker such as an induction hob. The method includes reading a time of day cooking completion request value provided by a user interface of a controller unit that controls the cooker. An earliest cooking start time value is assigned with a current time of day value provided by the clock of the controller unit and the controller unit determines a maximum cooking time value based on the earliest cooking start time value and the time of day cooking completion request value. The controller unit then processes the maximum cooking time value and a selected cooking profile instruction set read from a controller unit memory to determine a required cooking profile instruction set. The required cooking profile instruction set includes driver output instructions for controlling a load driver of the cooker.

Improvements in or relating to induction heating equipment

... 924,340. Protective arrangements. RADYNE Ltd. Dec. 15, 1961 [Feb. 27, 1961], No. 7104/61. Class 38 (5). In an induction-heating equipment including an alternating current generator 8 having a valve oscillator, a work inductor 7 and a tuning capacitor 3 for the work inductor, protection of the tuning capacitor is effected by a capacitor arranged to receive a current proportional to, but smaller than, the current taken by the capacitor 3, and an overload relay 6 which responds when the current through the capacitor 1 exceeds a predetermined value. As shown, the relay 6 is connected in series with a rectifier 4 and a variable resistor 5 across a resistor 2 which is in series with the capacitor 1.

INDUCTION HEATING CIRCUITS FOR COOKING APPLIANCES

Improvements in or relating to metal induction heating

... 505,073. Transformers; heating by electromagnetic induction. SOMES, H. E. July 30, 1937, Nos. 9194 and 9195. Convention dates, Aug. 17, 1936, and Aug. 20, 1936. [Class 38 (ii)] [Also in Group XI] The supply of high-frequency current to the heating coil of induction heating apparatus is effected through a transformer comprising a fixed primary winding 89 located within a recess in the inner face of a cylindrical core 305, and a movable secondary winding 94 located within a recess on the outer face of a cylindrical core 328, the secondary being connected to the heating coil 63 which is arranged to move with the secondary so as to enter the work 65 to he heated when the secondary moves into coupling relationship with the primary. The secondary core 328 may be provided with an Extension 310 which completes the magnetic circuit of the primary when the secondary moves to the inoperative position. Where power factor correction is effected by a condenser 72 connected across the primary terminals ...

Improvements in and relating to induction furnaces

... 463,097. Supply systems for highfrequency apparatus; converting. AKT.- GES. BROWN, BOVERI, & CIE. Feb. 13, 1936, No. 4437. Convention date, Feb. 13, 1935. [Classes 38 (ii) and 38 (iv)] A high frequency induction furnace is supplied from a D.C. source through electric discharge current converters having extinguishing grids of the type described in Specification 430,915, [Group XL], by which the anode currents are started and stopped at intervals depending upon the frequency of the resonant furnace circuit the capacity of which is constant, the frequency being dependent upon the state of the furnace charge. Current is supplied from the D.C. source u to the cathode m and the anodes b of an inverter, the cathodes being also connected to the middle of the primary of a transformer f. The secondary of this transformer is in the resonant circuit including the induction furnace winding g and the condenser i. The inverter is ignited and extinguished in dependence upon the resonant circuit by grids ...

IMPROVEMENTS IN INDUCTION HEATING

... 1,244,741. Induction heating. AJAX MAGNETHERMIC CORP. 24 Sept., 1968 [25 Sept., 1967], No. 17672/68. Heading H5H. [Also in Division C7] Metal slabs 10 are heated to rolling temperature in a multi-stage induction heating apparatus. In the three-stage apparatus shown a movable slab holder T carries three slabs 10 to positions beneath respective inductors A, B and C whereupon they are raised by hoists 51, 60 into the inductors and a cold slab is inserted into the left-hand end of the holder T. The inductor A has a greater heating power than B, preferably twice as much, and the inductor B has a greater heating power than inductor C, preferably twice as much. The slabs are simultaneously lowered at the end of a heating cycle and the holder T moved to the right whereupon the slab which had been heated in inductor C is discharged to the rolling mill and the three remaining slabs are raised into the inductors A, B, C. Thus each slab is heated successively in the inductors A, B and C. A sensing ...

Improvements in electroluminescent devices

... 748,683. Electroluminescence. BRITISH THOMSON-HOUSTON CO., Ltd. April 6, 1954 [April 8, 1953], No. 10095/54. Drawings to Specification. Class 39 (1). One of the electrodes of a flexible electroluminescent panel is a light-transmitting flexible material formed of conductive glass fibres. The other electrode may be of the same material or a sheet of metal or metallized or metal-clad plastic or plywood. The phosphor, e.g. zinc oxide-zinc sulphide activated by copper, manganese, lead or silver may be dispersed in a solid dielectric which cements it to the glass fibres and a covering layer and edge mouldings of transparent plastic cover the assembly except where metal terminal tabs are applied. The conductive glass is made by drawing glass fibres at 600‹ C. through an atmosphere of anhydrous stannic tetrachloride; or by spraying cadmium nitrate or indium trichloride solution in atomized form onto the fibres. The fibres are spun and woven into cloth or pressed to form paper sheets. Glass paper ...

Improvements in induction heating systems

... 875,210. Valve oscillator circuits; R.F. couplings. SOC. DE TRAITEMENTS ELECTROLYTIQUES ET ELECTROTHERMIQUES. Feb. 3, 1959 [Feb. 7, 1958], No. 3789/59. Classes 40(6) and 40(7) [Also in Groups XI and XXXVI] A high-frequency induction heating system which is to be used as an auxiliary heating source for a glass fibre spinner operating at temperature of the order of 1,000‹C. has the heating coil and immediate circuit separate from the valve oscillator supplying the power, which it is necessary to place in a region of lower temperature. The oscillator and heater units are coupled by means of a co-axial cable as indicated in the figure. The oscillator is based on triode valve 2 whose anode is connected to the central conductor 24 of the coaxial line and also to inductance 11 in series with the coupling transformer 12 coupling the anode and grid circuits. A capacitor 10 across inductance 11 is adjusted so that the impedance of the feed-back circuit increases with increase of operating frequency ...

Device for inductive heating of a metallic workpiece

In order to be able to heat a workpiece inductively with the aid of at least one induction coil 1 in accordance with a target temporal heating profile, without having to detect the temperature profile, in particular of the workpiece core, the temporal heat requirement respectively required for the heating profile of the workpiece is calculated in a computer 12 taking account of the thermal losses occurring, and then submitted as reference variable to the control device 6 for a thyristor switch 5 which switches the supply of power. ...

INDUCTION HEATING COOK MECHANISM

INDUCTION HEATER

VORRICHTUNG ZUM INDUKTIVEN ERWAERMEN EINES METALLISCHEN WERKSTUECKES

COOK DEVICE

SWITCHING CONFIGURATION AND PROCEDURE FOR TURNING AN INDUCTION FURNACE ON

MEANS FOR TRANSPORTING AND WARM STOPS OF MEALS

Formgebungsmaschine und Verfahren zum induktiven Erhitzen

A shaping machine includes a melting vessel, an induction coil arranged on the melting vessel for inductively heating, in particular melting, a material, and a shaping cavity. The melting vessel has at least one irradiation region which is substantially permeable for an electromagnetic field, and the shaping machine is adapted to cool the material in the cavity in such a way that a substantially crystalline solid body is formed. A body with a higher magnetic permeability than the melting vessel is arranged overlapping the irradiation region, and the induction coil is arranged between the body and the irradiation region.

DEVICE AND PROCEDURE FOR INDUCTIVE WARMING UP OF SEVERAL WITH A CONDUCTIVE LAYER MISTAKES TABLE-WARE ELEMENTS FOR THE ADMISSION OF MEALS

EQUIPMENT AND PROCEDURE FOR THE INDUCTION HARDENING OF MACHINE COMPONENTS WITH EXACT POWER OUTPUT REGULATION

INDUCTION

ELECTRONIC INDUCTION HEATING DEVICE.

INDUCTION HEATING MECHANISM

Symmetrical generator for electrical, inductive heating

Rotating magnet heat induction

A rotating magnet heater for metal products, such as aluminum strip, can include permanent magnet rotors arranged above and below a moving metal strip to induce moving or time varying magnetic fields through the metal strip. The changing magnetic fields can create currents (e.g., eddy currents) within the metal strip, thus heating the metal strip. A magnetic rotor set can include a pair of matched magnetic rotors on opposite sides of a metal strip that rotate at the same speed. Each magnetic rotor of a set can be positioned equidistance from the metal strip to avoid pulling the metal strip away from the passline. A downstream magnetic rotor set can be used in close proximity to an upstream magnetic rotor set to offset tension induced by the upstream magnetic rotor set.

Washing machine and control method of washing machine

A washing machine includes: a tub configured to contain water; a drum of metal material configured to rotate in the tub; at least one temperature sensor configured to detect a temperature of air between the drum and the tub; an induction heater configured to be disposed in a position spaced apart from the drum and heat the drum; a controller unit configured to control the induction heater within a preset control temperature range based on a temperature detected by the at least one temperature sensor; a circuit configured to supply power to the induction heater; a first thermostat configured to operate according to the temperature of a first air between the drum and the tub, and open the circuit when the temperature of the first air is a first safety control temperature corresponding to a case where the temperature of the drum is in a first safety temperature range; and a thermal fuse configured to operate according to a temperature of the second air outside the tub, and open the circuit ...

Induction coil assembly for uterine ablation and method

A vapor delivery device includes an induction coil system. The induction coil system can include a coiled fluid tube, a coiled wire, a capsule between the coiled fluid tube and the wire, and a cooling fluid supply configured to force a cooling fluid through the capsule across the coiled wire. The induction coil system can include a closed loop ferrite core, a wire coiled around a first portion of the ferrite core, and a fluid tube coiled around a second portion of the ferrite core. A wire coil can be contained in a cartridge system removably coupleable to a disposable vapor delivery device. The system can include a fluid flow controller and induction power regulation to maintain a specific operating pressure range for vapor within a uterus or other bodily cavity, tract, or duct.

Method and arrangment for dynamic wave form correction

A method and device for controlling an induction heating cooking apparatus

A method for controlling an induction heating cooking apparatus, comprises the steps of a) transforming a supply current (I ...

INDUCTION HOT PLATE COMPRISING HEATING REGIONS HAVING A RECONFIGURABLE STRUCTURE, AND METHOD FOR INCREASING THE MAXIMUM POWER OF SAID HEATING REGIONS

Temperature sensing and heating device

An induction heating system including a container for storing a substance; a heating element in thermal contact with the substance; a machine readable tag in thermal contact with the substance, the tag having a machine readable temperature- dependant characteristic; an interrogator for reading the temperature-dependant characteristic of the tag and for determining the current temperature of the substance; an induction heater for generating an AC magnetic field to heat the heating element; and a heater controller for controlling operation of the induction heater, in response to the substance temperature determined by the interrogator, to heat the substance.

Inductive heating device for heating an aerosol-forming substrate

An inductive heating device (1) comprises: a device housing (10), a DC power source (11), a power supply electronics (13) comprising a DC/AC inverter (132) including a Class-E power amplifier with a transistor switch (1320), a transistor switch driver circuit (1322), and an LC load network (1323) configured to operate at low ohmic load (1324), the LC load network (1323) comprising a shunt capacitor (CI) and a series connection of a capacitor (C2) and an inductor (L2), and a cavity (14) arranged in the device housing (10), the cavity (14) having an internal surface shaped to accommodate at least a portion of the aerosol-forming substrate (20), wherein the cavity (14) is arranged such that the inductor (L2) is inductively coupled to the susceptor (21) of the aerosol-forming substrate (20) during operation.

Aerosol-forming substrate and aerosol-delivery system

There is described an aerosol-forming substrate for use in combination with an inductive heating device. The aerosol-forming substrate comprises a solid material capable of releasing volatile compounds that can form an aerosol upon heating of the aerosol-forming substrate and at least a first susceptor material for heating of the aerosol-forming substrate. The first susceptor material is arranged in thermal proximity of the solid material. The aerosol-forming substrate further comprises at least a second susceptor material having a second Curie-temperature which is lower than a predefined maximum heating temperature of the first susceptor material. There is also described an aerosol-delivery system.

Electronic vapour inhalers

Abstract A cartridge (26) for an electronic vapour inhaler (10) comprises an elongate induction heatable element (28) and a flavour-release medium (30) adhered to the surface (32) of the elongate induction heatable element (28). Figure 2 ...

APPARATUS FOR AEROSOL GENERATING DEVICE

Apparatus for an aerosol generating device is described. The apparatus comprises: a heating circuit for heating a heating arrangement, the heating arrangement arranged to heat an aerosol generating material to thereby generate an aerosol; a temperature sensing arrangement for sensing a temperature of the device; and a controller for controlling a supply of energy to the heating circuit. The controller is configured to: determine a characteristic that is indicative that energy is being supplied to the heating circuit over a given time period, and determine a change in temperature sensed by the temperature sensing arrangement over the given time period; and take a control action if, based on the determined characteristic and the increase in temperature sensed by the temperature sensing arrangement over the given period, the controller determines that one or more predetermined criteria that are indicative of a fault with the temperature sensing arrangement are satisfied.

METHOD AND DEVICE FOR ELECTROMAGNETIC HEATING OF A ROLL, IN PARTICULAR OF A CALENDER ROLL, USED IN THE MANUFACTURE OF PAPER OR OF SOME OTHER WEB-FORMED PRODUCT

A method is disclosed for heating a roll by electromagnetic induction, in particular a calender roll, used in the manufacture of paper or of some other web-formed product. In the method, a variable magnetic flux is applied to the mantle by a magnetic shoe device through air gaps. The magnetic flux induces eddy currents in the mantle, which generate heat owing to the resistance of the roll mantle. The magnetic flux is applied to the roll mantle by means of a magnetic shoe device comprising several component cores side by side. The magnitude of the air gap between the component cores and the face of the roll mantle and/or the magnetizing currents is adjusted so as to control the distribution of the heating effect in the axial direction of the roll. As the frequency (f) of the magnetizing current of the component cores is selected at such a high frequency that a sufficiently low depth of penetration of the heating effect is obtained. The component cores of the magnetizing device are each separately ...

HIGH-FREQUENCY INDUCTION HEATING SYSTEM WITH CIRCUIT PROTECTIVE FEATURE

A high-frequency induction system can generally be achieved by detecting noise superimposed on AC power supply which might induce voltages exceeding the given break-down voltage of a switching device and in such cases by temporarily shutting off the power supply to the induction heating system. To implement this, a high-frequency induction heating system, according to the invention, is provided with a noise detector circuit connected to the output terminal of a rectifying circuit rectifying said input AC voltage. The noise detector is designed to detect noise pulses superimposed on an input AC voltage. The induction heating system of the present invention also includes means for disabling a switching device. The disabling means responds to detection of a noise pulse by the noise detector by disabling the switching device and whereby protects the circuit of the induction heating system.

METHOD OF CONTROLLING THE INDUCTION HEATING OF AN ELONGATED WORKPIECE

COOKING APPARATUS

... : Cooking apparatus, e.g. a microwave oven, is arranged to accurately detect minor weight variation of a food article on a turntable in synchronization with the position of the turntable or its rotational cycle, whereby to control the cooking by such weight variation with improved accuracy.

POWER CONTROL FOR APPLIANCE HAVING A GLASS CERAMIC COOKING SURFACE

IMPROVED POWER CONTROL FOR APPLIANCE HAVING A GLASS CERAMIC COOKING SURFACE An improved power control system for a household cooking appliance of the type having a glass ceramic cooking surface and at least one radiant heating unit disposed beneath the cooking surface operable at a plurality of user selectable power settings. At least one of the power settings has associated with it predetermined maximum and minimum reference temperatures defining a temperature band representative of the steady state temperature range for the glass ceramic support surface proximate the heating unit when heating normal loads at that power setting. The power control system includes an arrangement for sensing the temperature of the glass ceramic cooking surface proximate the heating unit and is operative to operate the heating unit at a power level other than the power level corresponding to the user selected power setting when the sensed glass ceramic support surface temperature is outside the predetermined ...

FORGE COIL AUTOMATIC START UP WITH KWS CONTROL

METHOD AND APPARATUS FOR PROVIDING HARMONIC INDUCTIVE POWER

MULTI-UNIT INDUCTION HEAT COOKING APPARATUS HAVING A COMMON NOISE REJECTION FILTER

HOOKAH

A hookah includes a high-frequency heating assembly and a battery assembly connected to the high-frequency heating assembly. The high-frequency heating assembly includes a cup, a metal sheet, and a magnetic induction coil. The cup includes high-temperature resistant non-metallic material and is configured to accommodate a tobacco material. The metal sheet is fixed in the cup and the cup is disposed in the magnetic induction coil. When the magnetic induction coil is electrified, an eddy current is generated in the metal sheet whereby the metal sheet produces heat to heat the tobacco material.

COMBINATION OF SOLID-STATE RF TECHNOLOGY WITH ANOTHER HEAT TREATMENT FOR FOOD

The present invention relates to a line for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus comprising at least one, preferably a multitude, solid-state radio frequency source(s) and a further heat treatment apparatus. The present invention further relates to a method for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus comprising at least a solid-state RF energy source microwave heating step and a further heat treatment step.

A METHOD AND DEVICE FOR REMOVING COATINGS ON A METAL STRUCTURE

A device for removing layers of corrosion and other coatings (205) from a metal surface (204) is disclosed. Said device includes a signal generator ( 202) driving an induction coil (201) that is positioned on the structure (20 4). A control unit (206) includes a temperature sensor sensing the temperatu re in the metal structure (204). The control unit is adapted to control the power output of the signal generator (202) in accordance with the temperatur e in the metal structure (204).

INDUCTION HEATING SYSTEM CONNECTION BOX

An induction heating system includes an induction heating head assembly configured to move relative to a workpiece. The induction heating system may also include a temperature sensor assembly configured to detect a temperature of the workpiece and/or a travel sensor assembly configured to detect a position, movement, or direction of movement of the induction heating head assembly relative to the workpiece, and to transmit feedback signals to a controller configured to adjust the power provided to the induction heating head assembly by a power source based at least in part on the feedback signals. In certain embodiments, the induction heating system may also include a connection box configured to receive the feedback signals, to perform certain conversions of the feedback signals, and to provide the feedback signals to the power source. Furthermore, in certain embodiments, the induction heating system may include an inductor stand assembly configured to hold the induction heating head assembly ...

INDUCTION HEATING DEVICE AND PROCESS FOR CONTROLLING TEMPERATURE DISTRIBUTION

An induction heating device (10) for controlling the temperature distribution in an electrically conductive material, or susceptor (60), when heated by induced eddy currents in the material. A non-electrically conductive material can be heated in a controlled manner by placing the material near to the susceptor. Variable power is applied to multiple induction coil sections (40) wound around the length of the susceptor from a power source by one or more switching circuits (30). The coil sections can be overlapped (80) or counterwound (121) between adjacent coil sections, or provided power in a cascaded manner, to achieve desired temperature distributions in the susceptor. A control circuit (50) is used to control the power applied to each coil section and the output of the power source. By placing a non-electrically conduction material near to the susceptor the material can be heated in a controlled manner.

Verfahren zur Inbetriebsetzung eines über gittergesteuerte Stromrichter gespeisten, in Resonanzschaltung mit einer Kapazität arbeitenden Induktionsofens.

Elektrisches Entladungsgefäss.

Reibungskupplung.

Vorrichtung zum elektro-induktiven Oberflächenhärten metallischer Werkstücke.

Verfahren zur Hochfrequenz-Warmbehandlung von Zahnrädern.

Vorrichtung zum Abmessen einer Menge elektrischer Energie.

Durchlauf-Induktionsofen zur ungleichmässigen Erwärmung von Metallblöcken

Zeitschalteinrichtung für Hochfrequenzhärteanlagen.

Elektrisches Entladungsgefäss.

Giessverfahren für zur Seigerung neigende Legierungen.

Fixing device, control method for the same, and image forming apparatus

A fixing device includes: a heat generating rotating member including a heat generating layer; an exciting coil to inductively heat the heat generating layer; a degaussing coil generating an electrical current in response to a magnetic flux generated by the exciting coil and generating a magnetic flux in an opposite direction; an exciting coil controller configured to control energization of the exciting coil by using PWM signals; a degaussing coil controller determining necessity of switching the degaussing coil and to control energization of the degaussing coil. When the degaussing coil controller switches ON/OFF state of the degaussing coil, the exciting coil controller controls ON time periods of the PWM signals so as to be within a range from minimum to maximum values of the ON time periods of the PWM signals corresponding to the ON/OFF state of the degaussing coil stored in a storage unit.

Apparatus, system, method and computer program product for precise multi-stage programmable induction cooktop

Embodiments of an exemplary induction cooktop apparatus or system, may include an induction cooking unit; an interface adapted to receive, store, and execute a plurality of instructions of a multistage programmable recipe using said induction cooking unit; a power supply adapted to be coupled to a power source; a controller coupled to said power supply, said interface, and said induction cooking unit adapted to control said induction cooking unit according to said plurality of instructions of said multistage programmable recipe. An embodiment may include a system, method, and computer program product comprising: an induction cooking unit; receiving at an interface a plurality of instructions of a multistage programmable recipe; storing instructions in a memory; executing instructions in a controller coupled to the memory and induction cooking unit, so as to control the induction cooking unit in accordance with instructions of the multistage programmable recipe.

Cooking device

The cooking device includes a top plate 2 on which containers 30 are to be placed, heating devices 5 L, 5 R provided under the top plate 2 , electrodes 15, 16, 17 provided on a lower surface of the top plate 2 , capacitance detection devices 18, 19, 20 for detecting changes in capacitance of the electrodes 15, 16, 17 , and a boil over determination device 31 for determining a liquid boiled over from the containers 30 on the basis of the changes in capacitance detected by the capacitance detection devices 18, 19, 20 in heating operations of the heating devices 5 L, 5 R. The electrodes 15, 16, 17 have a plurality of arc-shaped detection parts 15 a, 16 a, 17 a provided along periphery of each of the heating devices 5 L, 5 R.

Canned product heating apparatus

A canned product heating apparatus includes: a non-contact type temperature detecting element which is not in contact with a surface of a can container; a directional microphone oriented to a closure of the can container; an interrupting circuit which interrupts an electrical supply to a high-frequency induction heating coil based on a signal transmitted from the directional microphone. The electrical supply to the high-frequency induction heating coil is stopped by the interrupting circuit in case the directional microphone captures sonic waves within a predetermined range.

Synchronous full-bridge power oscillator with leg inductors

An electronic high frequency induction heater driver, for a variable spray fuel injection system, uses a zero-voltage switching oscillator that utilizes a full H-bridge topology with inductors between semiconductor switches wherein the semiconductor switches are synchronized within the bridge for function. The induction heater driver, upon receipt of a turn-on signal, multiplies a supply voltage through a self-oscillating series resonance, wherein one component of the tank resonator circuit comprises an induction heater coil magnetically coupled to an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature.

Utensil quality feedback for induction cooktop

Methodology, apparatus and computer programming are provide that permit an induction cooking appliance to evaluate a utensil for use with the appliance. A user may manually initiate an evaluation that will prompt the user to place a utensil on the appliance for evaluation. An evaluation is made based on differences between the expected energy and actual energy delivered. A score related to suitability for use of the utensil may then be displayed to the user.

System and method for detecting vessel presence and circuit resonance for an induction heating apparatus

Systems and methods for detecting vessel presence and circuit resonance for an induction heating apparatus are disclosed. A detector circuit generates an output signal based on a feedback signal corresponding to a signal, such as current, flowing through an induction heating coil. The output signal has a duty cycle corresponding to the proximity of operating frequency of the induction heating apparatus to resonance. Changes in the duty cycle of the output signal can be monitored to determine the presence or absence of a vessel on the induction heating coil.

Cooking Hob Wih Rotary Blade Driving Means and Assembly Comprising a Cooking Hob and Cooking Vessel With Rotary Blades

The cooking hob ( 1 ) comprises a support plate ( 2 ) of glass or glass ceramic, rotary blade driving means ( 32 ) comprising a lower magnetic coupling member ( 5 ) rotatably arranged below the support plate ( 2 ) and a drive motor ( 6 ) operatively connected for rotating it, and position changing means ( 33 ) for moving the lower magnetic coupling member ( 5 ) between an operative position, in which the lower magnetic coupling member ( 5 ) is close enough to the support plate ( 2 ) to magnetically transmit torque to an upper magnetic coupling member ( 54 ) connected to rotary blades ( 53 ) installed in a cooking vessel ( 50 ) located on the support plate ( 2 ), and an inoperative position, in which the lower magnetic coupling member ( 5 ) is far from the support plate ( 2 ).

System Using Multi-Layer Wire Structure for High Efficiency Wireless Communication

A structure for wireless communication having a plurality of conductor layers, an insulator layer separating each of the conductor layers, and at least one connector connecting two of the conductor layers wherein an electrical resistance is reduced when an electrical signal is induced in the resonator at a predetermined frequency.

INDUCTION-HEATING COOKER

An induction-heating cooker includes an infrared sensor for detecting infrared rays emitted from a cooking container, a scorching detecting portion for outputting, when a temperature of the cooking container increases from a first set temperature and exceeds a second set temperature, scorching detection information based on infrared detection information of the infrared sensor in a heating mode in which a power can be set, and a loading detecting portion for detecting addition of a load such as, for example, a material to be cooked based on a change of the infrared detection information. Even if the scorching detecting portion outputs the scorching detection information before a cooking time measured from the start of a heating operation reaches a first set time, a controller continues the heating operation. If the loading detecting portion detects that the load has been added, the measured cooking time is cleared and measurement thereof is restarted. 1. An induction-heating cooker comprising:a top plate adapted to place a cooking container thereon;an inverter circuit disposed below the top plate and having a heating coil to heat the cooking container;an infrared sensor disposed below the top plate to detect infrared rays that are emitted from a bottom surface of the cooking container and pass through the top plate, the infrared sensor outputting infrared detection information corresponding to a temperature of the bottom surface of the cooking container;a scorching detecting portion operable to detect scorching, in which a material to be cooked has burnt and stuck to the bottom surface of the cooking container, based on the infrared detection information, the scorching detecting portion outputting scorching detection information;an output setting portion operable to select one of a plurality of different power set values; and a first time measuring portion operable to measure a cooking time from the start of heating by the inverter circuit; and', 'a loading ...

Method for Heating a Cooking Vessel with an Induction Heating Device and Induction Heating Device

A method for heating a cooking vessel utilizing an induction heating device is provided. According to various aspects, the induction heating device includes a resonant circuit with an induction heating coil. A specified amount of energy may be supplied to the cooking vessel with the induction heating device depending on a heating power level selected by a user and/or on a cooking vessel type selected by the user. A parameter value of the resonant circuit which is dependent on a temperature of the cooking vessel, in particular of the bottom of the cooking vessel, may be determined and stored. The parameter value may be regulated to a setpoint which is dependent on the stored parameter value. 1. A method for heating a cooking vessel utilizing an induction heating device , the method comprising:supplying a specified amount of energy to the cooking vessel from the induction heating device comprising a resonant circuit and an induction heating coil, wherein the specified amount of energy depends on a heating power level selected by a user or a cooking vessel type selected by the user;determining and storing a parameter value of the resonant circuit, wherein the parameter value comprises a period duration of a natural-frequency resonant oscillation of the resonant circuit and wherein the parameter value being dependent on a temperature of a bottom of the cooking vessel; andregulating the parameter value to a setpoint which is dependent on the stored parameter value.2. The method of claim 1 , wherein the setpoint of the parameter value is equal to the stored parameter value.3. The method of claim 1 , further comprising outputting a signal to a user after supplying the specified amount of energy to the cooking vessel.4. The method of claim 1 , further comprising applying a specified heating power to the cooking vessel for a specified settling time after supplying the specified amount of energy to the cooking vessel and before determining and storing the parameter value of ...

COOKER HOB DEVICE

A cooker hob device, in particular to an induction cooker hob device, includes at least one switching unit and at least one control apparatus. In order to obtain a high degree of efficiency, the control apparatus is constructed to automatically prompt the at least one switching unit in at least one operating cycle to switch in at least one entire first time interval using at least one switching parameter having a value which changes at least substantially continuously. 113-. (canceled)14. A cooktop apparatus , comprising:at least one switching unit; andat least one control apparatus constructed to automatically prompt the at least one switching unit in at least one operating cycle to switch in at least one entire first time interval using at least one switching parameter having a value which changes at least substantially continuously.15. The cooktop apparatus of claim 14 , constructed in the form of an induction cooktop apparatus.16. The cooktop apparatus of claim 14 , wherein the control apparatus is constructed to render during the operating cycle the switching unit inactive during an entire inactivity time interval which is at least one millisecond long and which directly adjoins the first time interval.17. The cooktop apparatus of claim 16 , wherein the control apparatus is constructed to switch the switching unit during the operating cycle so that the value of the switching parameter changes substantially continuously in a second time interval that directly adjoins the inactivity time interval.18. The cooktop apparatus of claim 16 , further comprising at least one switching element connected to the switching unit in an electrically conducting manner in at least one operating state claim 16 , said control apparatus being constructed to switch the at least one switching element during the inactivity time interval.19. The cooktop apparatus of claim 14 , wherein the first time interval has an overall duration of around two milliseconds.20. The cooktop apparatus of ...

Multi Cooker

A cooking appliance and method, the appliance including: at least one temperature controlled heating element; a user interface for enabling a user to select a predefined subject for cooking; and a processor module that maintains a cooking data for cooking the selected predefined subject, and provides prompts to the user during cooking. The cooking data can be indicative of a cooking sequence or procedure. A cookware sensor can automatically identifying cookware being used. 1. A cooking appliance including:at least one temperature controlled heating element;a user interface for enabling a user to select a predefined subject for cooking; anda processor module that maintains a cooking data for cooking the selected predefined subject, and provides prompts to the user during cooking.2. The appliance according to claim 1 , wherein the cooking data is indicative of a cooking sequence or procedure.3. The appliance according to claim 2 , further including a cookware sensor for automatically identifying cookware being used.4. The appliance according to claim 3 , wherein the processor module claim 3 , upon identification of the cookware claim 3 , can adjust the respective cooking sequence.5. The appliance according to claim 1 , further including one or more temperature sensors.6. The appliance according to claim 5 , further including one or remote temperature sensors.7. The appliance according to claim 5 , wherein the processor module receives data from the temperature sensors indicative of the cooking temperature and can adjust the temperature controlled heating element according to the respective cooking sequence.8. The appliance according to claim 5 , wherein at least one temperature controlled heating element is an inductive coil element in a substantially rectangular configuration.9. The appliance according to claim 5 , wherein at least one temperature controlled heating element is an inductive coil element in a substantially oval configuration.10. The appliance according ...

Ir temperature sensor for induction heating of food items

A system and method for measuring the temperature of cookware to be induction-heated, using an infrared temperature sensor. An induction heater countertop may include a viewing window between the infrared temperature sensor and the cookware. Various algorithms may be applied to the sensed temperature, to adjust it to account for the presence of the viewing window, as well as variations in the cookware material.

IMAGE HEATING DEVICE

An electromagnetic induction heating type image heating device is capable of preventing image defects caused by an increase in the temperature of a non-sheet passing portion during thin paper passage, and uses a magnetic shunt alloy having a predetermined Curie temperature. The image heating device is configured to heat a material based on heat generated by an eddy current generated in a conductive member by inducing a magnetic field in a conductive member with a magnetic flux generation unit. The conductive member includes a magnetic shunt alloy whose composition is adjusted to have a predetermined Curie temperature. The image heating device includes a cooling device configured to cool an end portion of the conductive member. Consequently, the image heating device can increase a cooling effect by the cooling device during thin paper passage, in which a fixing temperature is lower than during plain paper passage. 1. An image heating device comprising:a coil;an image heating member configured to generate heat by magnetic flux generated from the coil to heat an image on a recording material at a nip portion,wherein the image heating member includes a magnetic shunt alloy adjusted to have a predetermined Curie temperature;a nip forming member configured to form the nip portion with the image heating member;a controller configured to execute a first heating mode for heating a recording material having a first grammage at a first target temperature, which is lower than the Curie temperature, when the recording material having the first grammage is conveyed to the nip portion, and to execute a second heating mode for heating a recording material having a second grammage, which is less than the first grammage, at a second target temperature, which is lower than the first target temperature, when the recording material having the second grammage is conveyed to the nip portion; anda cooling device configured to cool an end portion of the nip forming member,wherein, in the ...

INDUCTION HEATING APPARATUS

In an induction heating apparatus, an infrared-ray detection portion includes an infrared-ray reception portion adapted to receive infrared rays radiated from an object to be heated, an amplification portion adapted to amplify a detection signal from the infrared-ray reception portion to form an infrared-ray detection signal, and a temperature detection portion adapted to detect the temperature of the infrared-ray detection portion and to output the temperature to the control portion. The control portion is adapted to correct the infrared-ray detection signal to form an infrared-ray real signal, when the temperature of the infrared-ray reception portion is equal to or higher than a temperature to be detected by the infrared-ray detection portion, based on information about a negative signal superimposed on the infrared-ray detection signal outputted from the infrared-ray detection portion, which is negative-signal information about the negative signal with the reverse polarity from that of the infrared-ray detection signal. 1. An induction heating apparatus , comprising:a top plate for placing an object to be heated thereon;a heating coil adapted to generate an induction magnetic field for heating the object to be heated;a control portion adapted to control a high-frequency electric current applied to the heating coil for heating the object to be heated; andan infrared-ray detection portion which is adapted to detect an infrared ray radiated according to the temperature of the object to be heated and is adapted to output an infrared-ray detection signal according to infrared-ray energy of the detected infrared ray;wherein the infrared-ray detection portion includesan infrared-ray reception portion adapted to output a detection signal, when receiving an infrared ray radiated from the object to be heated,an amplification portion adapted to amplify the detection signal from the infrared-ray reception portion to form an infrared ray detection signal, anda temperature ...

Method for Transmitting Data, Induction Heating Device, Inductively Heatable Cooking Vessel and System

The disclosure herein provides for transmitting data from an induction heating device to a receiver of an inductively heatable cooking vessel. The induction heating device may include a resonant circuit with an induction heating coil and a converter that may generate a control voltage (UA) from an AC mains voltage (UN) with a control frequency. The resonant circuit may be applied with a control voltage in order to generate an alternating magnetic field for heating the cooking vessel. The data to be transmitted to the receiver may be encoded using the the control frequency.

Cook top appliance having spill and boil-over detection and response

A cook top appliance that can detect a food deposit on the cook top surface from a spill or boil-over is provided. A sensor zone that surrounds a heating source is used to detect the food deposit. Based on the detection of the food deposit, the cook top appliance can take one or more remedial actions to e.g., notify the user and/or modify the operation of the heating source. A variety of configurations of the sensor zone are described.

Multi-layer-multi-turn high efficiency inductors for an induction heating system

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

HEATING APPARATUS

A heating apparatus, in particular a hob heating apparatus, with at least one heating connection for at least one heating element and at least one frequency unit. In order to provide a heating apparatus of the generic type with relatively high operational reliability, it is proposed that the heating apparatus comprises a protective unit, which is provided for determining the existence of a conducting path between the frequency unit and the at least one heating connection. 110-. (canceled)11. A heating apparatus comprising:at least one heating connection for at least one heating element,at least one frequency unit, anda protective unit configured to determine whether a conducting path exists between the frequency unit and the at least one heating connection.12. The heating apparatus of claim 11 , wherein the heating apparatus is constructed as a cooktop heating apparatus.13. The heating apparatus of claim 11 , wherein the protective unit is configured to determine whether the conducting path exists based on a potential profile.14. The heating apparatus of claim 13 , wherein the protective unit is configured to analyze the potential profile at the at least one heating connection.15. The heating apparatus of claim 13 , wherein the protective unit is configured to determine whether the conducting path exists based on a frequency spectrum of the potential profile.16. The heating apparatus of claim 13 , wherein the protective unit comprises at least one high-pass filter configured to discriminate between potential profiles.17. The heating apparatus of claim 11 , wherein the protective unit comprises a current sensor configured to determine whether the conducting path exists.18. The heating apparatus of claim 11 , further comprising a control unit configured to receive connection information from the protective unit and to initiate at least one safety measure when a faulty conducting path exists.19. The heating apparatus of claim 11 , wherein a total number of heating ...

Multi-layer-multi-turn high efficiency inductors for electrical circuits

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

Method for operation of multi-layer-multi-turn high efficiency inductors with cavity structure

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

Condensate Prevention Hood

The invention relates to a device for controlling the temperature of laboratory vessels, comprising at least one vessel receptacle for receiving the laboratory vessels, at least one removably designed peripheral unit, and a base unit which has a temperature control device and a mounting for placing the at least one removable peripheral unit in a defined position, characterised in that the base unit and the at least one peripheral unit each have at least one coupling element, with said elements, when the peripheral unit is placed onto the base unit in the defined position, forming at least one releasable coupled pair by which the electrical power and/or at least one signal can be transmitted. 1. A device for controlling the temperature of laboratory vessels withat least one vessel receptacle for receiving the laboratory vesselsat least one removably designed peripheral unit, and witha base unit having a temperature control device and a mount for placing the at least one removable peripheral unit in a defined position, characterised in that the base unit and the at least one peripheral unit each have at least one coupling element, which, when the peripheral unit is placed on the base unit in the defined position, form at least one releasable coupled pair, through which electric power and/or at least one signal can be transmitted.2. The device according to claim 1 , characterised in that the respective coupling elements of the at least one releasable coupled pair are separated from one another galvanically.3. The device according to claim 2 , characterised in that claim 2 , through said at least one releasable coupled pair optical and/or inductive and/or capacitive electric power coupled pair and/or at least one signal can be transmitted.43. The device according to one of to claim 1 , characterised in that at least one respective coupling element in the base unit and the peripheral unit is a coil claim 1 , and that both coils together claim 1 , in the defined position ...

Power Converter with Over-Voltage Protection

In one implementation, a power converter with over-voltage protection includes a power switch coupled to a power supply through a tank circuit, and a control circuit coupled to a gate of the power switch. The control circuit is configured to turn the power switch OFF based on a current from the tank circuit, thereby providing the over-voltage protection to the power converter. In one implementation, the power converter is a class-E power converter. In one implementation, the control circuit is configured to sense the current from the tank circuit based on a voltage drop across a sense resistor coupled to the power switch. 1. A power converter with over-voltage protection , said power converter comprising:a power switch coupled to a power supply through a tank circuit;a control circuit coupled to a gate of said power switch;said control circuit being configured to turn said power switch OFF based on a current from said tank circuit, thereby providing said over-voltage protection to said power switch.2. The power converter of claim 1 , wherein said control circuit is configured to turn said power switch ON when a current through said power switch is substantially zero.3. The power converter of claim 1 , wherein said power converter is a class-E power converter.4. The power converter of claim 1 , wherein said control circuit is configured to sense said current from said tank circuit based on a voltage drop across a sense resistor coupled to said power switch.5. The power converter of claim 1 , wherein said power switch comprises a group IV insulated-gate bipolar transistor (IGBT).6. The power converter of claim 1 , wherein said power switch comprises a group IV bipolar junction transistor (BJT).7. The power converter of claim 1 , wherein said power switch comprises a group IV metal-oxide-semiconductor field-effect transistor (MOSFET).8. The power converter of claim 1 , wherein said power switch comprises a group III-V heterostructure field-effect transistor (HFET).9. ...

INDUCTION COOKING HOB WITH A NUMBER OF HEATING ZONES

The present invention relates to an induction cooking hob () including a number of heating zones (). Each heating zone () comprises or corresponds with at least one induction coil. Each induction coil is connected to a generator. Two or more heating zones () are linked or can be linked into a cooking area by a user. The linked heating zones () are controlled by a common power setting. An operator interface is provided for operating the heating zones (). A control unit is provided for controlling the heating zones (). The operator interface includes actuating elements corresponding with predetermined links () between the heating zones (). The control unit is provided for synchronizing the generators of the linked heating zones () by one common controller. 1101212141416161818. An induction cooking hob () including a number of heating zones ( , ′; , ′; , ′; , ′) , wherein:{'b': 12', '12', '14', '14', '16', '16', '18', '18, 'each heating zone (, ′; , ′; , ′; , ′) comprises or corresponds with at least one induction coil,'}{'b': 12', '12', '14', '14', '16', '16', '18', '18, 'each induction coil is connected to a generator, two or more heating zones (, ′; , ′; , ′; , ′) are linked or can be linked into a cooking area by a user,'}{'b': 12', '12', '14', '14', '16', '16', '18', '18', '12', '12', '14', '14', '16', '16', '18', '18', '12', '12', '14', '14', '16', '16', '18', '18, 'the linked heating zones (, ′; , ′; , ′; , ′) are controlled by a common power setting, an operator interface is provided for operating the heating zones (, ′; , ′; , ′; , ′), and a control unit is provided for controlling the heating zones (, ′; , ′; , ′; , ′),'}characterized in, that{'b': 20', '20', '12', '12', '14', '14', '16', '16', '18', '18', '12', '12', '14', '14', '16', '16', '18', '18, 'the operator interface includes actuating elements corresponding with predetermined links (, ′) between the heating zones (, ′; , ′; , ′; , ′), and the control unit is provided for synchronizing the generators ...

Induction heating system with self regulating power control

An induction heating system ( 46 ) for use in cooking with a positive feedback mechanism ( 54, 56 ) by means of which the power applied to a cooking utensil (52) can be varied in a wide range by changing its position above an induction coil ( 10 ), and by means of which the circuitry ( 54 ) is automatically protected against overheating.

Induction heating cooker and control method for same

An induction cooker comprises: first and second inverters [[( 11 a, 11 b )]] each of which is connected in parallel to the smoothing capacitor and has a DC power supply converted to AC by first and second switching elements to supply high-frequency power to first and second heating coils [[( 4 a, 4 b )]]; first and second oscillation circuits [[( 7 a, 7 b )]] which supply a driving signal to the respective first and second switching elements; and a control unit [[( 10 )]] which controls driving of the first and second oscillation circuits. The control unit [[( 10 )]] controls the first and second oscillation circuits by alternately driving the first and second oscillation circuits and causes a switched-off side heating coil of the first and second heating coils to maintain low-power heating without causing the switched-off side heating coil of the first and second heating coils to stop heating each time the control unit switches the first and second oscillation circuits to drive.

Induction heating device

An induction heating device includes: a rectifying circuit that rectifies an AC power supply; a smoothing capacitor that smooths the rectified output to obtain a DC power supply; a first and a second inverters each composed of a heating coil, a resonance capacitor, and a switching element, and connected to the smoothing capacitor in parallel; a first and a second oscillating circuits that supply drive signals to the switching elements; and a controller that controls drive of the first and second oscillating circuits. The controller alternately drives the first and second oscillating circuits, and controls a drive time ratio of the first and second oscillating circuits so that a power change amount generated every time the drive is switched between the first and second oscillating circuits is not more than a predetermined amount.

INDUCTION HEATING COOKER

A conventional induction heating cooker which operates two inverters at the same time, with only one input current detecting circuit provided, cannot measure each of input currents to each of the plurality of inverters, and cannot control input powers by feedback control on input currents. In the induction heating cooker which has a plurality of inverters, when the input power varies to the inverter which has less input power supplied, the variation hardly influences the cooking. The induction heating cooker according to the present invention fixes the operating frequency for the inverter which has less input power supplied and performs the feedback control of the input current for the inverter which has bigger input power supplied. 1. An induction heating cooker comprising:a rectifier circuit which rectifies an AC power supply;an input current detecting circuit which detects a current flowing from the AC power supply to the rectifier circuit;a smoothing capacitor which smoothes an output from the rectifier circuit;a first heating coil;a second heating coil;a first inverter which converts an output from the smoothing capacitor into a predetermined frequency by using a semiconductor switch to supply a high-frequency power to the first heating coil;a second inverter which converts the output from the smoothing capacitor into a predetermined frequency by using a semiconductor switch to supply a high-frequency power to the second heating coil; anda control unit which controls operation of the semiconductor switch to cause the current detected by the input current detecting circuit to be a previously set current value, whereinin the case where the first and second inverters are operated at the same time, the control unitcontrols to alternately repeata first operation mode in which an output power from the first inverter is a first output power and an output power from the second inverter is a second output power which is lower than the first output power anda second ...

TEMPERATURE SENSING AND HEATING DEVICE

An induction heating system including a container for storing a substance; a heating element in thermal contact with the substance; a machine readable tag in thermal contact with the substance, the tag having a machine readable temperature-dependant characteristic; an interrogator for reading the temperature-dependant characteristic of the tag and for determining the current temperature of the substance; an induction heater for generating an AC magnetic field to heat the heating element; and a heater controller for controlling operation of the induction heater, in response to the substance temperature determined by the interrogator, to heat the substance. 125-. (canceled)26. An induction heating system comprising:a container for storing a substance;a heating element in thermal contact with the substance;a machine readable tag in thermal contact with the substance, the tag storing a tag identifier and having a machine readable temperature-dependant characteristic;an interrogator for reading the tag identifier, for reading the temperature-dependant characteristic of the tag, and for determining a current temperature of the substance from the temperature-dependent characteristic;an induction heater for generating an AC magnetic field to heat the heating element; anda heater controller for controlling operation of the induction heater, in response to the substance temperature determined by the interrogator, to heat the substance.27. An induction heating system according to claim 26 , wherein the tag includes at least one resonant member having the temperature-dependant characteristic.28. An induction heating system according to claim 27 , wherein the temperature-dependant characteristic is a shift in resonant frequency of the resonant member as a function of temperature.29. An induction heating system according to claim 26 , wherein the tag includes a plurality of resonant members encoding the tag identifier.30. An induction heating system according to claim 29 , ...

Melting and Mixing of Materials in a Crucible by Electric Induction Heel Process

Apparatus and method are provided for electric induction heating and melting of a transition material that is non-electrically conductive in the solid state and electrically conductive in the non-solid state in an electric induction heating and melting process wherein solid or semi-solid charge is periodically added to a heel of molten transition material initially placed in a refractory crucible. Induction power is sequentially supplied to a plurality of coils surrounding the exterior height of the crucible at high power level and high frequency with in-phase voltage until a crucible batch of transition material is in the crucible when the induction power is reduced in power level and frequency with voltage phase shifting to the induction coils along the height of the crucible to induce a unidirectional electromagnetic stir of the crucible batch of material. 1. A method of melting a crucible batch of a transition material by gradually adding a solid or semi-solid charge of the transition material to a molten heel of the transition material in a crucible having a plurality of induction coils surrounding the exterior of the crucible , each one of the plurality of induction coils exclusively surrounding one of a plurality of partial interior volumes of the crucible , the lowest one of the plurality of partial interior volumes comprising a bottom interior volume and the highest one of the plurality of partial interior volumes comprising a top interior volume of the crucible , a first intermediate interior volume disposed above the bottom interior volume , and a second intermediate interior volume disposed above the first intermediate volume and below the top interior volume , each one of the plurality of induction coils connected to the output of a separate alternating current power source , the method comprising the steps of:loading the molten heel of the transition material into at least a bottom portion of the bottom interior volume and adjusting the output of the ...

Melting and Mixing of Materials in a Crucible by Electric Induction Heel Process

Apparatus and method are provided for electric induction heating and melting of a transition material that is non-electrically conductive in the solid state and electrically conductive in the non-solid state in an electric induction heating and melting process wherein solid or semi-solid charge is periodically added to a heel of molten transition material initially placed in a refractory crucible. Induction power is sequentially supplied to a plurality of coils surrounding the exterior height of the crucible at high power level and high frequency with in-phase voltage until a crucible batch of transition material is in the crucible when the induction power is reduced in power level and frequency with voltage phase shifting to the induction coils along the height of the crucible to induce a unidirectional electromagnetic stir of the crucible batch of material. 1. A method of melting a crucible batch of a transition material by gradually adding a solid or semi-solid charge of the transition material to a molten heel of the transition material in a crucible having a plurality of induction coils surrounding the exterior of the crucible , each one of the plurality of induction coils exclusively surrounding one of a plurality of partial interior volumes of the crucible , the lowest one of the plurality of partial interior volumes comprising a bottom interior volume and the highest one of the plurality of partial interior volumes comprising a top interior volume of the crucible , each one of the plurality of induction coils connected to the output of a separate alternating current power source , the method comprising the steps of:loading the molten heel of the transition material into at least a bottom portion of the bottom interior volume and adjusting the output of the separate alternating current power source connected to the one of the plurality of induction coils surrounding the bottom interior volume to a melting frequency and a melting power level to keep the molten ...

INDUCTION COOKING HOB WITH A POT DETECTION DEVICE AND A METHOD FOR OPERATING AN INDUCTION COOKING HOB

An induction cooking hob with a pot detection device. The hob includes a cooking surface having cooking areas and/or cooking zones. The hob includes a user interface having a switch element and a display. The hob includes a control unit for controlling the cooking area(s) and/or the cooking zone(s). The pot detection device checks, if a cooking vessel is placed on the cooking area(s) and/or cooking zone(s). The control unit switches off the cooking area(s) and/or cooking zone(s), if the pot detection device has identified that the cooking vessel has been removed from the cooking area(s) and/or the cooking zone(s). The control unit stores a cooking mode of the cooking area(s) and/or cooking zone(s), which have been switched off. The display indicates that the cooking area(s) and/or cooking zone(s) have been switched off. The switch element restarts the cooking area(s) and/or cooking zone(s) in the same cooking mode. 1. An induction cooking hob with a pot detection device , wherein:{'b': 10', '14', '16', '18, 'the induction cooking hob includes a cooking surface () comprising one or more cooking areas (, ) and/or cooking zones (),'}{'b': '12', 'the induction cooking hob includes a user interface () comprising at least one switch element and at least one display,'}{'b': 14', '16', '18, 'the induction cooking hob includes a control unit for controlling the cooking area(s) (, ) and/or the cooking zone(s) (),'}{'b': 14', '16', '18, 'the pot detection device is provided for checking, if a cooking vessel is placed on the cooking area(s) (, ) and/or cooking zone(s) (),'}{'b': 14', '16', '18', '14', '16', '18, 'the control unit is provided for switching off the cooking area(s) (, ) and/or cooking zone(s) (), if the pot detection device has identified that the cooking vessel has been removed from said cooking area(s) (, ) and/or the cooking zone(s) (),'}{'b': 14', '16', '18, 'the control unit is provided for storing a cooking mode of that or those cooking area(s) (, ) and/or ...

Hardening method and hardening device

An object of the present invention is to provide a hardening method and a hardening device capable of successfully hardening a shaft and an inner wall of a hole of a work in which the hole is formed close to the shaft on a flat plate. A hardening device for hardening a shaft and an inner wall of a hole, the shaft extending vertically from a flat plate and the hole being formed adjacent to the shaft, includes a first heating coil that is a conductive body facing the shaft and a second heating coil that is a helical conductive body having at least a portion inserted into the hole, so that the first heating coil and the second heating coil heat the shaft and the inner wall of the hole respectively and simultaneously.

Induction heating cooker and control method thereof

An induction heating cooker having an oil temperature control function by of the amount of change of an operating frequency, and a control method thereof, the induction heating cooker including a heating coil, an inverter unit, a driving unit, a detection unit to detect a value of a current that flows at the heating coil, and a control unit to calculate an operating frequency of the driving unit according to the value of the current, to vary the operating frequency so that the heating coil maintains a constant output that corresponds to an output level, and to determine whether oil accommodated in a container placed on the heating coil is overheated, by use of an amount of change of the operating frequency, and the maintenance or the control of the temperature of oil may be achieved.

Melting and Mixing of Materials in a Crucible by Electric Induction Heel Process

Apparatus and method are provided for electric induction heating and melting of a transition material that is non-electrically conductive in the solid state and electrically conductive in the non-solid state in an electric induction heating and melting process wherein solid or semi-solid charge is periodically added to a heel of molten transition material initially placed in a refractory crucible. Induction power is sequentially supplied to a plurality of coils surrounding the exterior height of the crucible at high power level and high frequency with in-phase voltage until a crucible batch of transition material is in the crucible when the induction power is reduced in power level and frequency with voltage phase shifting to the induction coils along the height of the crucible to induce a unidirectional electromagnetic stir of the crucible batch of material. 1. A method of melting a crucible batch of a transition material by gradually adding a solid or semi-solid charge of the transition material to a molten heel of the transition material in a crucible having a plurality of induction coils surrounding the exterior of the crucible , each one of the plurality of induction coils exclusively surrounding one of a plurality of partial interior volumes forming a total interior volume of the crucible , the lowest one of the plurality of partial interior volumes comprising a bottom interior volume and the highest one of the plurality of partial interior volumes comprising a top interior volume of the crucible , the method comprising the steps of:loading the molten heel of the transition material into at least a portion of the bottom interior volume;connecting a bottom volume output of a melting power source to the one of the plurality of induction coils surrounding the bottom interior volume, the bottom volume output of the melting power source operating at a melting frequency and a melting power level to keep the molten heel of the transition material at least at the ...

Cooking Temperature and Power Control

A system and method for controlling the power delivered to cookware by a power control system that comprises a heating control user interface that is set by the user to a particular heating control user interface set point within an operating range. A controller derives from the heating control user interface set point a desired cookware temperature set point, and, over at least a first portion of the operating range that encompasses the boiling range, also derives from the heating control user interface set point a maximum limit of power that can be delivered to the cookware to maintain the cookware at the desired cookware temperature set point. The maximum power limit varies monotonically over the first portion of the operating range.

IMAGE FORMATION APPARATUS

An electromagnetic induction heating apparatus comprises: a resonance circuit that includes a inductor and a capacitor; a direct-current electric power supply; and a switching element performing ON and OFF switching of electric power supplied to the resonance circuit by the direct-current electric power supply; performs intermittent control of the electric power supply by controlling the ON and OFF switching at regular intervals, and by performing control to stop the electric power supply when not controlling the ON and OFF switching, wherein during the intermittent control, the switching control unit performs gradual control such that, upon beginning the control of the ON and OFF switching, the electric power supply gradually increases to reach a target value, and upon stopping the control of the ON and OFF switching, the electric power supply gradually decreases from the target value until stopping, such that the gradual decrease involves fewer steps than the gradual increase. 1. An electromagnetic induction heating apparatus performing electromagnetic induction heating of a heating target electromagnetically coupled to an inductor , the electromagnetic induction heating apparatus comprising:a resonance circuit that includes the inductor and a capacitor;a direct-current electric power supply;a switching element performing ON and OFF switching of electric power supplied to the resonance circuit by the direct-current electric power supply; anda switching control unit performing intermittent control of the electric power supplied to the resonance circuit by performing control of the ON and OFF switching by the switching element at regular intervals, and by performing control to stop the electric power supplied to the resonance circuit when not performing control of the ON and OFF switching, whereinduring the intermittent control, the switching control unit performs gradual control such that, upon beginning the control of the ON and OFF switching, the electric power ...

INDUCTION HOB

An induction hob () is provided. The induction hob comprises a solid plate (), a plurality of electrically activatable coil members (-) arranged underneath the plate, said coil members defining corresponding cooking zones (-) of the induction hob, and a control unit () configured to select power levels for the cooking zones. In the solution according to one or more embodiments of the present invention, upon selection of first (P) and second (P) power levels for non-adjacent first () and second () cooking zones, respectively, the control unit is configured to automatically select for each intermediate cooking zone (-) between said first and second cooking zones a corresponding power level (P-P) obtained by interpolation of the first and second power levels with a predefined interpolating function. 1100. Induction hob () comprising:{'b': '105', 'a solid plate (),'}{'b': 1101', '1108', '1151', '1158, 'a plurality of electrically activatable coil members (-) arranged underneath the plate, said coil members defining corresponding cooking zones (-) of the induction hob, and'}{'b': '135', 'a control unit () configured to control the power level of the cooking zones,'}characterized in that{'b': 1151', '1156', '1152', '1155, 'upon selection of first (P1) and second (P6) power levels for non-adjacent first () and second () cooking zones, respectively, the control unit is configured to automatically select for each intermediate cooking zone (-) between said first and second cooking zones a corresponding power level (P2-P5) obtained by interpolation of the first and second power levels with a predefined interpolating function.'}2. Induction hob according to claim 1 , wherein the second power level is higher than the first power level and the predefined interpolating function is a monotonically increasing function claim 1 , thereby the power level selected for each intermediate cooking zone increases monotonically from the first to the second power levels.3. Induction hob ...

Induction Heated Hair Styling Appliances And The Heating Unit Therefor

The present invention provides an induction heating unit for heating up a hair styling appliance. The induction heating unit comprises a container defining a well that is surrounded by an induction coil winding, a controller electrically connected to the induction coil winding to operationally control a heating power; and a sensor plug disposed at the bottom on the well, the sensor plug adapted for coupling with a sensor socket on the hair styling appliance to detect at least temperature of the hair styling appliance through a temperature sensor, wherein the controller operationally controls a heating power based at least on the temperature detected through the temperature sensor. A method of heating up a hair styling appliance is also provided.

Apparatus for saving standby power in a microwave oven

An apparatus for saving standby power in a microwave oven includes a power switch that powers on the microwave oven; a power saving button that powers off the microwave oven; a power saving relay connected in parallel to the power switch and having a contact point to the power supply to the microwave oven that is turned on or off according to a control signal; and a control unit configured to turn on the contact point of the power saving relay when a contact point of the power switch is turned on, and turn off the contact point of the power saving relay when the power saving button is pressed.

Household appliance apparatus

A cooktop apparatus, in particular an induction cooktop apparatus, includes at least one glass unit and at least one coating configured as a multilayer structure, which is disposed on at least one subregion of at least a main face of the glass unit and has at least two layers. In order to achieve optimum compatibility with the sensors of the user interface without requiring a process after deposition, at least one of the layers is formed by at least one semiconducting material, to fulfill the function of an absorbing layer.

Vaporizer Device

A vaporizer device includes a housing, a wick element that is configured to contact a vaporizable substance, an induction heating element located within the housing and inductively coupled to the wick element and not in contact with the wick element, and a power source electrically connected to the induction heating element. The wick element is positioned such that the induction heating element is around the wick element and the wick element is surrounded by the induction heating element. The wick element is configured to heat the vaporizable substance based on induction heating. The induction heating element receives an alternating current from the power source and creates an electromagnetic induction field around the wick element, and the wick element generates heat based on the electromagnetic induction field.

AEROSOL-FORMING ARTICLE COMPRISING MAGNETIC PARTICLES

An aerosol-forming article for use in an electrically heated aerosol-generating device is provided, the aerosol-forming article including a mouthpiece, an aerosol-forming substrate, and a plurality of magnetic particles including a magnetic material having a Curie temperature of between 60 degrees Celsius and 200 degrees Celsius. An electrically heated aerosol-generating device for receiving the aerosol-forming article is also provided, the device including a heater element configured to heat the aerosol-forming article, an inductor, and a controller configured to measure an inductance of the inductor and to control a supply of electrical current to the heater element in response to the measured inductance. 1. An aerosol-forming article for an electrically heated aerosol-generating device , the aerosol-forming article comprising:a mouthpiece:an aerosol-forming substrate disposed in co-axial alignment with the mouthpiece; anda plurality of magnetic particles comprising a magnetic material having a Curie temperature of between about 60 degrees Celsius and about 200 degrees Celsius.2. The aerosol-forming article according to claim 1 , wherein the plurality of magnetic particles are disposed within the aerosol-forming substrate.3. The aerosol-forming article according to claim 1 , wherein the plurality of magnetic particles are present in an amount of between about 1 percent by weight and about 30 percent by weight of the aerosol-forming substrate.4. The aerosol-forming article according to claim 1 , wherein an average diameter of the magnetic particles is between about 25 micrometers and about 75 micrometers. This application is a continuation application of and claims the benefit of priority under 35 U.S.C. § 120 for U.S. Ser. No. 16/040,218, filed on Jul. 19, 2018, which is a continuation application of U.S. Ser. No. 15/311,629, filed on November 16, 2016, which is a National Stage application of PCT/EP2015/061184, filed on May 20, 2015, and claims benefit of ...

INDUCTION RANGE HAVING AUTOMATIC DOUBLE SIDE ROASTING FUNCTION

Disclosed is an induction range having an automatic double side roasting function. The induction range includes a body having an internal space in which a heating coil portion configured to perform induction heating and a rotating rod configured to provide torque of a motor are formed, an induction-exclusive container which is inserted into and mounted in the body to be tilted from the ground at a first angle and is continuously or intermittently rotatable inside the body by the rotating rod and in which an object to be cooked which is accommodated therein is cooked by induction heat transferred from a side surface of the induction-exclusive container, and a control portion including a recipe memory portion configured to store a plurality of preset recipe modes, a heating coil operation portion configured to control an operation of the heating coil portion, and a motor driving portion configured to control the motor. 1. An induction range having an automatic double side roasting function , comprising:a body having an internal space in which a heating coil portion configured to perform induction heating and a rotating rod configured to provide torque of a motor are formed;an induction-exclusive container which is inserted into and mounted in the body to be tilted from the ground at a first angle and is continuously or intermittently rotatable inside the body by the rotating rod and in which an object to be cooked which is accommodated therein is cooked by induction heat transferred from a side surface of the induction-exclusive container; anda control portion comprising a recipe memory portion configured to store a plurality of preset recipe modes, a heating coil operation portion configured to control an operation of the heating coil portion, and a motor driving portion configured to control the motor.2. The induction range of claim 1 , wherein a position indication portion protruding outward is formed on a bottom part of the induction-exclusive container claim 1 , ...

HEATING DEVICE AND CONTROL METHOD THEREOF

A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%. 1. A heating device , configured to generate an induced magnetic field according to a voltage provided by a power source , comprising:a first capacitor coupled to the power source;a first switch;a second switch coupled to the first switch in series at a first node, and the first switch and the second switch are coupled with the first capacitor in parallel;a second capacitor coupled to the first switch;a third capacitor coupled to the second switch, and coupled to the second capacitor in series at a second node;a coil coupled between the first node and the second node, and configured to generate the induced magnetic field; anda controller configured to output a first control signal and a second control signal to the first switch and the second switch, respectively, wherein the first control signal and the second control signal are complementary to each other;wherein during a period after the heating device receives the voltage and after the heating device receives a starting command, the controller is configured to output the first control signal to turn on or off the first switch, and output the second control signal to turn on or ...

COOKING APPLIANCE

A cooking appliance apparatus includes at least one current supply line, and at least one current sensor unit configured to measure a high-frequency current in the at least one current supply line. The at least one current sensor has a first sensor inductance, at least one second sensor inductance, and at least one conduction path, which connects the first sensor inductance to the at least one second sensor inductance in an electrically conducting manner. 113-. (canceled)14. A cooking appliance apparatus , comprising:at least one current supply line; andat least one current sensor unit configured to measure a high-frequency current in the at least one current supply line, said at least one current sensor having a first sensor inductance, at least one second sensor inductance, and at least one conduction path, which connects the first sensor inductance to the at least one second sensor inductance in an electrically conducting manner.15. The cooking appliance apparatus of claim 14 , constructed in the form of a cooktop apparatus.16. The cooking appliance apparatus of claim 14 , wherein a first magnetic field claim 14 , generated by a hypothetical current flow through the first sensor inductance claim 14 , cancels out a second magnetic field generated by a hypothetical current flow through the at least one second sensor inductance claim 14 , at least at one point.17. The cooking appliance apparatus of claim 14 , wherein the first sensor inductance and the at least one second sensor inductance have at least essentially identical inductance values.18. The cooking appliance apparatus of claim 14 , wherein the first sensor inductance and the at least one second sensor inductance are at least essentially identical.19. The cooking appliance apparatus of claim 14 , wherein the first sensor inductance and the at least one second sensor inductance are connected antiserially.20. The cooking appliance apparatus of claim 14 , wherein at least one of the first and second sensor ...

COOKING APPLIANCE

A cooking appliance has a base made of natural stone, ceramic, porcelain, or an ultra-compact surface, with a bottom surface, and a top surface. The cooking appliance has an induction heating element coupled to the bottom surface. The induction heating element heats a targeted object placed on the top surface to a cooking temperature of at least 100 degrees Celsius. 1. A cooking appliance , comprising:at least one induction heating element;a base having a top surface, an induction cooking region, and a bottom surface; whereinthe at least one induction heating element is positioned below the cooking region;the cooking region is made of granite or marble, and has a thickness between the top surface and the bottom surface, the thickness being between 6 millimeters and 12 millimeters; andthe at least one induction heating element is configured to heat a targeted object placed on the cooking region to a temperature of at least 150 degrees Celsius.2. (canceled)3. The cooking appliance of claim 1 , further comprising:at least one passage through the base, the at least one passage shaped to receive an undermount sink.4. The cooking appliance of claim 1 , further comprising:at least one passage through the base, the at least one passage having a recessed flange surface shaped to receive a cooktop control panel and seat the cooktop control panel flush with the top surface.5. The cooking appliance of claim 1 , whereinthe base comprises a counter region made of granite or marble; andthe induction cooking region is unitary with the counter region.6. The cooking appliance of claim 1 , further comprising:a control panel, whereby the appliance is configured to detect a targeted object placed on the cooking region, and to cause only a respective region of the at least one or more induction heating element to heat the targeted object.7. (canceled)8. (canceled)9. (canceled)10. The cooking appliance of claim 1 , whereinthe base is formed from a unitary slab of granite or marble;the ...

Cooking Hob and Operation Method Thereof

A method () for operating a cooking hob () is proposed. The cooking hob comprises at least a first () and a second () cooking zones and a control unit () configured for controlling the first and second cooking zones. The method comprises the following steps executed by the control unit. A pan (P) containing food to be cooked is associated () to the first cooking zone; a food temperature sensor (Ts) is associated () to the first cooking zone, the food temperature sensor being configured to be in direct contact with the food to be cooked and to communicate to the control unit an indication of the food temperature; a power level of the first cooking zone is automatically adjusted () according to a cooking recipe (CR) and to the current food temperature provided by the food temperature sensor; food movement from the first cooking zone to the second cooking zone is inferred (-----) based on a de-association () of the food temperature sensor from the first cooking zone and a re-association () of the food temperature sensor to the second cooking zone; and the power level of the second cooking zone is automatically adjusted () according to the cooking recipe and to the current food temperature provided by the food temperature sensor, starting from a progress status of the cooking recipe at the first cooking zone before moving the food. 1. A method for operating a cooking hob comprising at least a first and a second cooking zones and a control unit configured for controlling the first and second cooking zones , the method comprising the following steps executed by the control unit:associating a pan containing food to be cooked to the first cooking zone,associating a food temperature sensor to the first cooking zone, the food temperature sensor being configured to be in direct contact with the food to be cooked and to communicate to the control unit an indication of the food temperature,automatically adjusting a power level of the first cooking zone according to a cooking ...

INDUCTION HEATING SYSTEM

A thermoelectric element can comprise a thermoelectric body, a first contact, and a second contact structure, wherein the first and/or second contact structure can comprise at least one porous metal structure embedded within an outer region of the thermoelectric body, and at least one metal layer overlying the outer region of the thermoelectric body and being in direct contact with the embedded porous metal structure. A method of making the thermoelectric element can include embedding the at least one porous metal structure within the outer region of the thermoelectric body by induction heating, followed by electroplating of the at least one metal layer. 2. The induction heating system of claim 1 , further comprising a temperature sensor designed for measuring a temperature of a layer of the arrangement.3. The induction heating system of claim 2 , wherein the temperature sensor is an infrared temperature sensor.4. The induction heating system of claim 1 , further comprising an inlet and an outlet for applying a controlled flow of an inert gas through the furnace chamber.5. The induction heating system of claim 4 , wherein the inert gas is an argon gas.6. The induction heating system of claim 1 , wherein a distance dof the at least one induction heating coil to an outer side of the furnace wall ranges from 0 mm to 10 mm.7. The induction heating system of claim 5 , wherein the distance dis at least 0.5 mm and not greater than 2 mm.8. The induction heating system of claim 1 , wherein the at least one heating coil is hollow and adapted for passing a gas flow for cooling through the coil during operation of the induction heating system.9. The induction heating system of claim 1 , wherein the holding and pressing construction is adapted to apply a pressure of at least 5 psi and not greater than 15 psi on the arrangement.10. The induction heating system of claim 1 , wherein the induction heating system further comprises a control unit.11. The induction heating system of ...

CHARGE HEATING METHOD AND SYSTEMS FOR INDUCTION MOLDING

A method and system for heating a material includes an induction coil, a susceptor providing a receptacle, where the receptacle is configured to receive the material, and at least one nozzle for ejecting a heated gas onto and/or into the material. During the method, the susceptor is heated by the induction coil, and thermal energy from the susceptor can be transferred to the material. In addition to being heated by heat from the susceptor, the material is also heated by the heated gas, thereby increasing a heating rate of the material to rapidly heat the material to a processing temperature. The system can include other components such as a gas source, at least one conduit that channels gas from the gas source to the at least one nozzle, and a heat source that heats the gas prior to ejecting the gas from the at least one nozzle. 1. A method for heating a material , comprising:positioning the material within a receptacle of a susceptor assembly;heating a susceptor of the susceptor assembly with a magnetic flux field emitted by an induction coil; andheating the material within the receptacle with a heated gas directed to engage the material.2. The method of claim 1 , further comprising:flowing a gas from a gas source into a conduit in fluid communication with the gas source; andheating the gas within the conduit to form the heated gas,wherein the heating the material further includes ejecting the heated gas from the conduit through a nozzle, to engage the material.3. The method of claim 2 , wherein:the material is a quantity of the material in a particulate form; andthe heating of the material further includes placing the nozzle into the receptacle and into the quantity of the material prior to the heating of the material with the heated gas.4. The method of claim 1 , wherein the material has a processing temperature and the method further comprises:discontinuing the heating of the material with the heated gas prior to the material reaching the processing temperature; ...

PORTABLE INDUCTION HEATER

A portable induction heater is disclosed. In one construction, the portable induction heater is generally composed of a housing and a lid coupled to the housing. The lid has one or more apertures and a chamber coupled to at least one of the one or more apertures. The chamber is positioned in proximity to an induction heating element within the housing. A system for heating a hand held administration device is also disclosed. 1. A portable induction heater for inductively heating an administration device , the portable induction heater comprising:an enclosure having an aperture to receive the administration device;a chamber coupled to the aperture, the chamber having an open end, a closed end opposite the open end, and a wall between the open end and the closed end, the open end of the chamber coinciding with the aperture of the enclosure, the chamber to receive a portion of the administration device;an induction heating device within the enclosure and in close proximity to the chamber;a power supply; anda controller electrically connected to the power supply and to the induction heating device, the controller being configured to controllably provide power to the induction heating device to inductively heat the administration device when received by the chamber.2. The portable induction heater of claim 1 , wherein the controller further includes a microcontroller.3. The portable induction heater of claim 1 , and further comprising an indicator within or on the enclosure and coupled to the controller claim 1 , wherein the controller is further configured to control the indicator to signal one or more operational states of the portable induction heater.4. The portable induction heater of claim 3 , wherein the indicator is a light source claim 3 , and wherein the controller is further configured to provide power to the light source to emit a light having a relation to the administration device being received by the chamber.5. The portable induction heater of claim 3 , ...

INDUCTION HEATED HAND TOOL CONTAINER

A tool storage device with a base having a working surface on which to place tools and an induction coil located remotely from the working surface and connected to an alternating current power source. The induction coil is located to be magnetically coupled to a tool located on the working surface upon application of the alternating current and thereby induces a heating effect within the tool to elevate the temperature of the tool. 1. A tool storage device with a base having a working surface on which to place tools , an induction coil located remotely from the working surface and connected to an alternating current power source , said induction coil located to be magnetically coupled to a tool located on the working surface upon application of the alternating current and thereby induce a heating effect within the tool to elevate the temperature of the tool.2. The tool storage device of including a power source to supply power to said induction coil.3. The tool storage device of wherein said power source includes a DC battery and a switching circuit to convert output of said DC battery to an AC supply to said induction coil.4. The tool storage device of wherein said DC battery is removably mounted on said storage device.5. The tool storage device of wherein said DC battery is rechargeable.6. The tool storage device of wherein an electrical connector is provided on said device to connect said power supply to an external power source.7. The tool storage device of including a controller to monitor temperature of a tool located on said working surface and control supply of the power to said induction coil to maintain a predetermined temperature of said tool.8. The tool storage device of wherein said predetermined temperature is adjustable.9. The tool storage device of including a switch to interrupt supply of power to said induction coil.10. The tool storage device of wherein said induction coil extends about the periphery of said base.11. The tool storage device of ...

Heater element, device provided therewith and method for manufacturing such element

The present specification relates to heater element, device provided therewith and method for manufacturing such heater element. The heater element comprises a heater of a resistance heating metal that is provided in, at or close to a fluid path configured for heating fluid, wherein the heater comprises a conductor that is provided with a porous ceramic layer. In embodiments, the ceramic layer is provided on or at the conductor with plasma electrolytic oxidation. The ceramic layer has a thickness in the range of 5-300 μm.

AEROSOL-GENERATING DEVICE AND METHOD FOR BLOCKING HEATER HEAT CAUSED BY ERRONEOUS OPERATION

An aerosol-generating device according to an aspect includes: a heater; a first switch electrically connected to the heater in series; a second switch electrically connected to the heater and the first switch in series; a first processor configured to output a first control signal that controls an open/closed state of the first switch; and a second processor configured to perform communication with the first processor and output a second control signal that controls an open/closed state of the second switch such that the open/closed state of the second switch is changed based on a communication status with the first processor. 1. An aerosol-generating device comprising:a heater;a first switch electrically connected to the heater in series;a second switch electrically connected to the heater and the first switch in series;a first processor configured to output a first control signal that controls an open/closed state of the first switch; anda second processor configured to perform communication with the first processor, and output a second control signal that controls an open/closed state of the second switch such that the open/closed state of the second switch is changed based on a communication status with the first processor.2. The aerosol-generating device of claim 1 , wherein when the communication status with the first processor is defective claim 1 , the second processor outputs the second control signal such that the second switch is opened.3. The aerosol-generating device of claim 1 , wherein the first processor outputs the first control signal such that the open/closed state of the first switch is changed according to a communication status with the second processor.4. The aerosol-generating device of claim 3 , wherein when the communication status with the second processor is defective claim 3 , the first processor outputs the first control signal such that the first switch is opened.5. The aerosol-generating device of claim 1 , wherein the first processor ...

AUTOMATED COOKER

A cooking system is disclosed which includes a wok for receiving food, the wok being placed on top of a base unit housing a heating element for heating up the wok, a lid substantially covering the wok, at least a portion of the lid being able to rotate relative to the wok, a shaft secured to the rotating portion of the lid, a stirrer pivotally mounted to the shaft, a controller housed in the base unit controlling the heating element and rotations of the shaft and the lid, the rotation of the shaft causing a part of the stirrer to sweep from an edge of the wok to approximately a center of the wok in a low path and return to an edge of the wok in a high path, in the low path the part of the stirrer approximately touching a surface of the wok, in the high path the part of the stirrer being high above and not touching the surface of the wok, and a computing device residing outside of the base unit and signally coupled to the controller, the computing device storing a computer program upon execution instructing the computing device to send operating commands to the controller, the operating commands controlling the heating element and the rotations of the shaft and the lid. 1. A cooking system comprising:a wok for receiving food, the wok being placed on top of a base unit housing a heating element for heating up the wok;a lid substantially covering the wok, at least a portion of the lid being able to rotate relative to the wok;a shaft secured to the rotating portion of the lid;a stirrer pivotally mounted to the shaft;a controller housed in the base unit controlling the heating element and rotations of the shaft and the lid, the rotation of the shaft causing a part of the stirrer to sweep from an edge of the wok to approximately a center of the wok in a low path and return to an edge of the wok in a high path, in the low path the part of the stirrer approximately touching a surface of the wok, in the high path the part of the stirrer being high above and not touching the ...

INDUCTION HEATING POWER SUPPLY APPARATUS

An induction heating, power supply apparatus includes a smoothing section to smooth DC power and an inverter section to convert the smoothed DC power into AC power, The inverter section has first and second modules, each having serially connected switching devices. Output bus bars are interposed between the first and second modules. The smoothing section has first bus bars connected to a DC power supply section and the first module, a capacitor connected to the first bus bars, second bus bars connected to the DC power supply section and the second module, and another capacitor connected to the second bus bars. The first and second bus bars extend parallel to the output bus bars. The first module is interposed between the first bus bars and the output bus bars. The second module is interposed between the second bus bars and the output bus bars. 1. An induction heating power supply apparatus comprising:a smoothing section configured to smooth a pulsating current of DC power that has been output from a DC power supply section;an inverter section configured to convert the DC power smoothed by the smoothing section into AC power; andan output section configured to output the AC power into which the DC power has been converted by the inverter section,wherein the output section comprises a pair of output bus bars, wherein the inverter section comprises at least one bridge, the bridge comprising a first module and a second module, each of the first module and the second module comprising two switching devices connected to each other in series,wherein the pair of output bus bars is interposed between the first module and the second module of the bridge such that an output portion of the first module is connected to one of the output bus bars and an output portion of the second module is connected to the other output bus bar,wherein the smoothing section comprises a pair of first bus bars to be connected to an output portion of the DC power supply section and an input portion ...

AEROSOL-GENERATING ARTICLE WITH MULTI-MATERIAL SUSCEPTOR

An aerosol-generating article is provided, including an aerosol-forming substrate and a susceptor configured to heat the aerosol-forming substrate. The susceptor includes a first susceptor material and a second susceptor material having a Curie temperature, the first susceptor material being disposed in intimate physical contact with the second susceptor material. The first susceptor material may also have a Curie temperature, the second Curie temperature being lower than 500° C., and lower than the Curie temperature of the first susceptor material, if the first susceptor material has a Curie temperature. The use of such a multi-material susceptor allows heating to be optimised and the temperature of the susceptor to be controlled to approximate the second Curie temperature without need for direct temperature monitoring. 1. An aerosol-generating article , comprising:an aerosol-forming substrate; anda susceptor configured to heat the aerosol-forming substrate, the susceptor comprising a first susceptor material and a second susceptor material, the first susceptor material being disposed in intimate physical contact with the second susceptor material, and the second susceptor material having a Curie temperature that is lower than 500° C.2. The aerosol-generating article according to claim 1 , wherein the first susceptor material is aluminium claim 1 , iron claim 1 , or an iron alloy claim 1 , and the second susceptor material is nickel or a nickel alloy.3. The aerosol-generating article according to claim 1 , wherein the first susceptor material is a grade 410 claim 1 , 420 claim 1 , or 430 stainless steel claim 1 , and the second susceptor material is nickel or a nickel alloy.4. The aerosol-generating article according to claim 1 ,wherein the first susceptor material has a first Curie temperature,wherein the Curie temperature that is lower than 500° C. is a second Curie temperature, andwherein the second Curie temperature is lower than the first Curie temperature.5. ...

INDUCTION HEATING COOKER

An induction heating cooker includes a first coil, a second coil, a third coil, a first inverter circuit configured to supply a first high-frequency current to the first coil, a second inverter circuit configured to supply a second high-frequency current to the second coil, a third inverter circuit configured to supply a third high-frequency current to the third coil, a controller, and a load determining unit configured to determine a material of a heating object, wherein when a material of the heating object placed above the first coil is a magnetic material and a material of the heating object placed above the second coil includes a non-magnetic material, the controller operates the first inverter circuit and the second inverter circuit, and stops an operation of the third inverter circuit, and controls such that a frequency of the second high-frequency current is higher than a frequency of the first high-frequency current. 1. An induction heating cooker , comprising:a first coil;a second coil arranged outside the first coil;a third coil arranged outside the second coil;a first inverter circuit configured to supply a first high-frequency current to the first coil;a second inverter circuit configured to supply a second high-frequency current to the second coil;a third inverter circuit configured to supply a third high-frequency current to the third coil;a controller configured to control driving of the first inverter circuit, the second inverter circuit, and the third inverter circuit; anda load determining unit configured to determine a material of a heating object placed above each of the first coil, the second coil and the third coil,wherein when a material of the heating object placed above the first coil is a magnetic material and a material of the heating object placed above the second coil and the third coil includes a non-magnetic material,the controller operates the first inverter circuit and the second inverter circuit, and stops an operation of the third ...

Cooking apparatus, control method, and control system thereof

A cooking apparatus includes an input interface configured to receive a control command for an operation of the cooking apparatus, a communication interface configured to communicate with a terminal device, a memory configured to store information related to limitation of a cooking operation received from the terminal device, and a processor configured to perform the input control command based on the information related to the limitation of the cooking operation, and the processor is configured to, based on a cooking operation command being received via the input interface in a cooking operation limitation state set according to the information related to the limitation of the cooking operation, control the communication interface to request the terminal device for release of the limitation of the cooking operation, and based on a release command being received from the terminal device, perform the input cooking operation command.

SEALING TEMPERATURE SENSOR ASSEMBLY FOR AN APPLIANCE COOKTOP

A temperature sensor assembly for a cooktop appliance can include a plate with a cylindrically-shaped boss, one or more seals located in one or more grooves of the plate, a grommet disk engaged with the bottom surface of the plate, and a cylindrically-shaped grommet in which a cap for a temperature sensor is positioned and is slidable therein. 1. A temperature sensor assembly for a cooktop appliance , the temperature sensor assembling defining a vertical axis , comprising:a plate defining a top surface and a bottom surface, the plate defining a first annular groove positioned on the top surface of the plate and facing upwardly along the vertical axis;a first seal located in the first annular groove of the plate;a grommet disk defining a top surface and a bottom surface, the top surface of the grommet disk engaged with the bottom surface of the plate, the grommet disk defining a cylindrically-shaped grommet extending along the vertical axis from the grommet disk, the cylindrically-shaped grommet having a grommet opening; anda cap for a temperature sensor, the cap positioned within the grommet opening, the cap slidable along the vertical axis within the grommet opening, the cap defining an interior space for receipt of a temperature sensor.2. The temperature sensor for a cooktop appliance as in claim 1 , further comprising a cylindrically-shaped boss protruding upwardly along the vertical axis from the top surface of the plate claim 1 , the boss defining a centrally-located aperture extending though the plate; wherein the cylindrically-shaped grommet extends into the centrally-located aperture; and wherein the boss defines a second annular groove on a radially outward surface of the boss claim 1 , the second annular groove facing radially outward from the vertical axis claim 1 , and further comprising a second seal located in the second annular groove.3. The temperature sensor for a cooktop appliance as in claim 2 , wherein the first annular groove has a first annular ...

COOK TOP ASSEMBLY HAVING A MONITORING SYSTEM AND METHOD OF MONITORING A COOKING PROCESS

A cook top assembly includes a cooking surface. A monitoring system is configured to monitor and control a cooking process on the cooking surface. The monitoring system includes at least one temperature sensor configured to sense a first temperature change at the cooking surface. A controller operatively coupled to the temperature sensor is configured to receive from the temperature sensor a signal indicating the first temperature change and activate a timing module operatively coupled to the controller for a first predetermined time period based at least in part on the first temperature change sensed by the temperature sensor. 1. A cook top assembly , comprising:a cooking surface; a temperature sensor configured to sense a first temperature change at the cooking surface; and', receive from the temperature sensor a first signal indicating the first temperature change; and', 'activate a timing module operatively coupled to the controller for a first predetermined time period based at least in part on the first temperature change sensed by the temperature sensor., 'a controller operatively coupled to the temperature sensor, the controller configured to], 'a monitoring system configured to monitor and control a cooking process on the cooking surface, the monitoring system comprising2. The cook top assembly of claim 1 , further comprising:a notification module operatively coupled to the controller, the notification module configured to generate a second signal that the first predetermined time period has elapsed; andan indicator module operatively coupled to the notification module, the indicator module configured to receive the second signal from the notification module and output a first instructional signal for instructing an operator of the cook top assembly to perform a first action.3. The cook top assembly of claim 2 , wherein the controller is configured to confirm that the first action has been completed by the operator.4. The cook top assembly of claim 2 , ...

SLOTTED SHOT SLEEVE FOR INDUCTION MELTING OF MATERIAL

Disclosed are embodiments of a vessel configured to contain a secondary magnetic induction field therein for melting materials, and methods of use thereof. The vessel can be used in an injection molding apparatus having an induction coil positioned along a horizontal axis and adjacent to the vessel. The vessel can have a tubular body configured to substantially surround and receive a plunger tip. At least one longitudinal slot extends through the thickness of the body to allow and/or direct eddy currents into the vessel during application of an RF induction field from the coil. The body also includes temperature regulating lines configured to flow a liquid within. The temperature regulating lines can be provided to run longitudinally within the wall(s) of the body between its inner bore and outer surface(s). A flange may be provided at one end of the body to secure the body within an injection molding apparatus. 1. A temperature regulated vessel , comprising:a substantially tubular body comprising a first end and a second end along a longitudinal direction;a longitudinal slot extending between the first end and the second end of the substantially tubular body in the longitudinal direction and through a complete thickness of the substantially tubular body; andone or more temperature regulating channels configured to flow a liquid within the substantially tubular body;wherein the vessel is configured for use with a horizontally positioned induction coil configured to melt a meltable material in the vessel,wherein the longitudinal slot is configured to receive eddy currents within the vessel during application of an induction field by the induction coil,wherein the substantially tubular body is configured to substantially contain a second magnetic field produced by the eddy currents from the induction field to melt the meltable material during its application, andwherein the one or more temperature regulating channels are configured to regulate a temperature of the ...

HOUSEHOLD APPLIANCE WITH A CONTROL DEVICE

A domestic appliance includes at least one manually operable longitudinally or rotationally movable control device which is configured to adopt several latching positions. The latching positions are variably adjustable, for example adjusting a number of latching positions, or by adjusting a spacing between adjacent latching positions, or by adjusting a latching sensation of the latching positions. 110- (canceled)11. A domestic appliance , comprising at least one manually operable longitudinally or rotationally movable control device configured to adopt several latching positions , said latching positions being variably adjustable.12. The domestic appliance of claim 11 , further comprising a control facility claim 11 , said control device including adjustment electronics coupled to the control facility and configured to adjust the latching positions in response to data sent by the control facility.13. The domestic appliance of claim 11 , further comprising a control facility for adjusting the latching positions.14. The domestic appliance of claim 11 , wherein the latching positions are variably adjustable by adjusting a number of latching positions.15. The domestic appliance of claim 11 , wherein the latching positions are variably adjustable by adjusting a spacing between adjacent latching positions.16. The domestic appliance of claim 11 , wherein the latching positions are variably adjustable by adjusting a latching sensation of the latching positions.17. The domestic appliance of claim 16 , wherein different latching sensations are assigned to at least two latching positions.18. The domestic appliance of claim 11 , wherein the latching positions of the at least one control device is variable by a function of the control device.19. The domestic appliance of claim 11 , configured to operate at least one other domestic appliance claim 11 , with the control device representing an operating element for the at least one other domestic appliance.20. The domestic ...

COOKING TOOL, INTERWORKING SYSTEM BETWEEN THE COOKING TOOL AND KITCHEN APPLIANCES, AND CONTROL METHOD OF THE COOKING TOOL INTERWORKING WITH THE KITCHEN APPLIANCES

A cooking tool is disclosed, which comprises a fastening portion detachably provided in a cooking vessel provided above or inside a kitchen appliance to cook food; a sensor sensing a temperature of food which is cooked in the cooking vessel; a transmitter transmitting temperature information sensed by the sensor to the kitchen appliance as an electric signal; and a controller controlling the transmitter to transmit the temperature information sensed by the sensor as an electric signal. 1. A cooking tool comprising:a fastening portion detachably provided in a cooking vessel provided above or inside a kitchen appliance to cook food;a sensor sensing a temperature of food which is cooked in the cooking vessel;a transmitter transmitting temperature information sensed by the sensor to the kitchen appliance as an electric signal; anda controller controlling the transmitter to transmit the temperature information sensed by the sensor as an electric signal.2. The cooking tool according to claim 1 , wherein the kitchen appliance includes a receiver receiving the electric signal transmitted from the transmitter and a kitchen appliance controller controlling cooking intensity of food claim 1 , and the controller controls the transmitter to transmit the sensed temperature information to the receiver of the kitchen appliance to allow the kitchen appliance controller to control cooking intensity of food.3. The cooking tool according to claim 2 , wherein the sensor is provided as a thermocouple.4. The cooking tool according to claim 3 , wherein the thermocouple further includes a length control member controlling a length of the thermocouple to be in contact with food which is cooked.5. The cooking tool according to claim 2 , wherein the fastening portion further includes an extension portion extended therefrom to serve as a handle.6. The cooking tool according to claim 2 , further comprising a display module controlled by the controller to display cooking information of food.7. ...

METHOD FOR OPERATING A HOB, AND HOB

A method for operating a hob for maintaining a state, which exists at the time of activation of the maintaining operation, at a cooking point of the hob with a cooking vessel on it detects a change in temperature of the cooking vessel as a change in state, wherein supplied power and/or a change in temperature of the cooking vessel are evaluated. A maintaining function for maintaining the state, which is indicated at this time, at the cooking point with a cooking vessel placed on it can be triggered. In doing so, the current state at the cooking point is classified as a process at the boiling point of water on the one hand and as a process which is different therefrom or as a process which takes place at a different temperature without a phase transition of water on the other hand. 1. A method for operating a hob for maintaining a state at a cooking point of the hob with a cooking vessel on said cooking point , wherein said state exists at the time of activation of an operation for maintaining , the method comprising:placing a cooking vessel onto said cooking point of said hob and being heated by said cooking point or by an inductive heating device of said cooking point according to requirements;detecting a change in temperature of said cooking vessel as a change in state;detecting a heating process of said cooking vessel and evaluation of supplied power and/or a temperature of said cooking vessel and/or a profile thereof with respect to time;triggering of a maintaining function by an operator for maintaining said state, which is indicated at said time, at said cooking point with said cooking vessel placed on it; anddividing a current state at said cooking point firstly into a process at a boiling point of water and secondly into a process which is different therefrom or into a process which takes place at a different temperature without a phase transition of water,wherein, in a case of a decision in favor of a process at said boiling point of water, said power ...

Multi Cooker

A cooking appliance and method for heating an item positioned on the appliance and used in food preparation or food serving or cooking. The appliance including: a chassis having an upper platform for supporting the item in use; an induction element located below the platform for heating the item when positioned on the appliance; a temperature sensing assembly having a temperature sensing element; the temperature sensing element providing a temperature signal indicative of a current temperature of the item; a user interface for enabling a user to select a desired temperature of the item in use; and a processor module that receives the temperature signal and controls power to the induction element for providing the desired temperature; wherein the temperature sensing assembly is exposed to a fan cooling path such that the temperature sensing element is selectively cooled from below. 1. A cooking appliance for heating an item positioned on the appliance and used in food preparation or food serving or cooking , the appliance including:a chassis having an upper platform for supporting the item in use;an induction element located below the platform for heating the item when positioned on the appliance;a temperature sensing assembly having a temperature sensing element; the temperature sensing element providing a temperature signal indicative of a current temperature of the item;a user interface for enabling a user to select a desired temperature of the item in use; anda processor module that receives the temperature signal and controls power to the induction element for providing the desired temperature;wherein the temperature sensing assembly is exposed to a fan cooling path such that the temperature sensing element is selectively cooled from below.2. The cooking appliance of claim 1 , wherein the temperature sensing element is selectively cooled from below when the item is removed from the appliance.3. The cooking appliance of claim 1 , wherein the temperature sensing ...

Contraction Device Having Heating Control

The invention relates to a method for monitoring the temperature of the sleeve part of a tool holder, which sleeve part is inserted into the induction coil of a contraction device, wherein the instantaneous inductance of the induction coil is measured during the inductive heating and the current supply to the induction coil is influenced if the instantaneous inductance approaches, reaches, or exceeds a specified value. 118-. (canceled)19. A method for monitoring the temperature of a sleeve part of a tool holder ,which is inserted into an induction coil of a shrink-fit device,wherein present inductance of the induction coil is measured during inductive heating and current supply to the induction coil is influenced if the present inductance approaches, reaches, or exceeds a predetermined value.20. The method of claim 19 , wherein edge steepness of an alternating current flowing through the induction coil is ascertained in order to determine the present inductance of the induction coil.21. The method of claim 19 , for one or more tool holders with different sleeve parts wherein claim 19 ,a measurement is performed as to what present inductance the induction coil reaches when the sleeve part, inserted into the induction coil, has been heated enough for a shrink-mounting or removal, and the result thereof is stored;at the beginning of a new shrink-fitting procedure, a query is performed as to which tool holder has been inserted into the induction coil for the shrink-mounting or removal; andheating is terminated when the present inductance is measured so that it corresponds to the stored inductance that the sleeve part of the tool holder has when it is ready for shrink-mounting or removal.22. The method of claim 19 , for one or more tool holders with different sleeve parts wherein claim 19 ,a measurement of the present inductance of the induction coil when the sleeve part, inserted into the induction coil, has not yet been heated and at the beginning of a new shrink- ...

INDUCTION MODULE AND INDUCTION HOB

The invention relates to an induction module for powering one or more induction coils () of an induction hob (), the induction module () at least comprising: —an induction generator () for providing electrical power to an induction coil (); —a controller () for controlling the induction generator (); —a communication interface () for coupling the induction module () with a user interface (); wherein the controller () is adapted to operate the induction module () at least according to a first and a second configuration mode, wherein in the first configuration mode, the induction module () is configured to directly communicate with the user interface (), and wherein in said second configuration mode, the induction module () is adapted to be operated either according to master module or slave module configuration, wherein in master module configuration, the induction module () is configured to receive user interface information from the user interface () and provide operation information to one or more slave induction modules based on said user interface information and wherein in slave module configuration, the induction module () is configured to receive operation information from a master induction module and operate the induction generator () according to said operation information. 2. Induction module according to claim 1 , wherein in said slave module configuration claim 1 , the induction module does not consider information directly provided by the user interface.3. Induction module according to claim 1 , wherein the communication interface is configured to couple the induction module with the user interface and one or more further induction modules.4. Induction module according to claim 1 , wherein the communication interface is a bus interface for coupling the induction module with a communication bus.5. Induction module according to claim 1 , comprising storage means for storing information regarding operating the induction module according to said master ...

Portable induction heater

A portable induction heater is disclosed. In one construction, the portable induction heater is generally composed of a housing and a lid coupled to the housing. The lid has one or more apertures and a chamber coupled to at least one of the one or more apertures. The chamber is positioned in proximity to an induction heating element within the housing. A system for heating a hand held administration device is also disclosed.

Vaporizer Device

A vaporizer device includes a housing, a wick element that is configured to contact a vaporizable substance, an induction heating element located within the housing and inductively coupled to the wick element and not in contact with the wick element, and a power source electrically connected to the induction heating element. The wick element is positioned such that the induction heating element is around the wick element and the wick element is surrounded by the induction heating element. The wick element is configured to heat the vaporizable substance based on induction heating. The induction heating element receives an alternating current from the power source and creates an electromagnetic induction field around the wick element, and the wick element generates heat based on the electromagnetic induction field. 118-. (canceled)19. A vaporizer device comprising:a cartridge comprising a reservoir, wherein the reservoir is configured to hold a vaporizable substance;a wick element comprising a susceptor material coupled to and located within the cartridge, wherein the wick element is configured to contact the vaporizable substance located in the cartridge, and wherein the wick element is configured to transfer the vaporizable substance from the reservoir based on a capillary action of the wick element;an induction heating element inductively coupled to the wick element, wherein the wick element is at least partially surrounded by the induction heating element and wherein the wick element is configured to heat the vaporizable substance based on induction heating of the wick element by the induction heating element; anda processor configured to control the induction heating element to cause heating of the vaporizable substance.20. The vaporizer device of claim 19 , further comprising a power source electrically connected to the induction heating element claim 19 , wherein the induction heating element receives an alternating current from the power source and creates an ...

AEROSOL GENERATION DEVICE AND OPERATION METHOD THEREFOR

An aerosol-generating device according to an embodiment includes: a heater including a heating element for heating an aerosol-generating material; and a controller including a first port electrically connected to the heater, and configured to control operation of the heating element by controlling activation of the first port. 1. An aerosol-generating device comprising:a heater including a heating element for heating an aerosol-generating material; anda controller including a first port electrically connected to the heater, and configured to control operation of the heating element by controlling activation of the first port.2. The aerosol-generating device of claim 1 , whereinthe heater includes a switch connected to the heating element, andthe controller deactivates the first port to cut off power supplied to the switch.3. The aerosol-generating device of claim 1 , whereinthe heater includes a switch connected to the heating element, andthe controller activates the first port to supply power to the switch.4. The aerosol-generating device of claim 1 , further comprising a user interface configured to receive a user input claim 1 ,wherein the controller includes a second port electrically connected to the user interface, and activates the first port based on the user input received through the second port.5. The aerosol-generating device of claim 4 , wherein the controller switches from a first mode in which the first port is deactivated to a second mode to activate the first port when the user input is received through the second port in the first mode.6. The aerosol-generating device of claim 1 , further comprising a sensor configured to detect a state of the heating element claim 1 ,wherein the controller further includes a third port electrically connected to the sensor, and periodically activates and deactivates the third port.7. The aerosol-generating device of claim 6 , wherein the controller activates the third port for a first time period and deactivates ...

Inline melt control via rf power

Various embodiments provide apparatus and methods for melting materials and for containing the molten materials within melt zone during melting. Exemplary apparatus may include a vessel configured to receive a material for melting therein; a load induction coil positioned adjacent to the vessel to melt the material therein; and a containment induction coil positioned in line with the load induction coil. The material in the vessel can be heated by operating the load induction coil at a first RF frequency to form a molten material. The containment induction coil can be operated at a second RF frequency to contain the molten material within the load induction coil. Once the desired temperature is achieved and maintained for the molten material, operation of the containment induction coil can be stopped and the molten material can be ejected from the vessel into a mold through an ejection path.

INDUCTION HEATING APPARATUS AND CONTROLLING METHOD THEREOF

An induction heating apparatus includes a coil driver configured to have a plurality of selectable resonant frequencies, and a controller configured to control the coil driver. The coil driver drives a coil according to a control signal from the controller. 1. An induction heating apparatus comprising:a coil driver configured to have a plurality of selectable resonant frequencies; anda controller configured to control the coil driver,wherein the coil driver is further configured to drive a coil according to a control signal from the controller.2. The induction heating apparatus of claim 1 , wherein the coil driver has two or more resonant frequencies.3. The induction heating apparatus of claim 1 , wherein the coil driver comprises:a plurality of first coils connected in series;a plurality of second coils connected in series;a first switching device disposed between the plurality of first coils;a second switching device disposed between the plurality of second coils;a plurality of first capacitors connected to the plurality of first coils; anda plurality of second capacitors connected to the plurality of second coils.4. The induction heating apparatus of claim 3 , wherein the controller is further configured to:turn on or off the first switching device disposed between the plurality of first coils, andturn on or off the second switching device disposed between the plurality of second coils.5. The induction heating apparatus of claim 3 , wherein:the plurality of first capacitors connected to the plurality of first coils are two or more capacitors, andthe plurality of second capacitors connected to the plurality of second coils are two or more capacitors.6. The induction heating apparatus of claim 3 , wherein the coil driver further comprises a current sensor disposed between an input terminal of the coil driver and a node of the plurality of first coils connected in series and the plurality of second coils connected in series.7. The induction heating apparatus of ...

Metal strip induction heating method and induction heating apparatus

An induction heating method for a metal strip is provided to heat a continuously conveyed metal strip using an induction heating device disposed at a first position on a pass line. The induction heating method includes a step of detecting a displacement from a predetermined datum line of a width direction center line of the metal strip at a second position on the pass line that is different from the first position, a step of computing an estimated displacement of the width direction center line of the metal strip at the first position by temporal and spatial extrapolation of the displacement based on a function expressing a time series of changes in the displacement, and a step of controlling a relative positional relationship between the induction heating device and the metal strip in a width direction of the metal strip based on the estimated displacement.

INDUCTION HEATING COOKER

An induction heating cooker is provided that has a plurality of heating coils arranged under a top plate, that has power consumption, heat generation, and unnecessary radiation suppressed at the time of detection of a load, and that requires a short time for detection of a load. In the induction heating cooker of this disclosure, two or more heating coils are at the same time selected depending on a position of an area operated on the operation section. The operation detecting section performs the load detection only for the heating coils selected by an operation on the operation section. By using such a configuration, a user can select heating coils to be used out of a plurality of heating coils in advance. A load detection operation is not performed for heating coils other than the selected heating coils.

HOME APPLIANCE

The present disclosure relates to a home appliance. The home appliance includes a dispensing port, a heating flow path part communicating with the dispensing port, a heating device for heating water flowing through the heating flow path part, and a controller controlling the heating device. The heating device includes a coil part in which coils are stacked in multilayers. 1. A home appliance comprising:a dispensing port;a heating flow path part communicated with the dispensing port;a heating device configured to heat water flowing through the heating flow path part; anda controller configured to control the heating device,wherein the heating device comprises a coil part in which coils are stacked in multilayers.2. The home appliance according to claim 1 , wherein the heating device comprises a frame on which the coil part is seated claim 1 , and the frame is coupled to the heating flow path part.3. The home appliance according to claim 2 , wherein the frame comprises a spacer spacing the heating flow path part from the coil part in a predetermined distance.4. The home appliance according to claim 2 , further comprising a sensor to detect a temperature of the heating flow path part claim 2 , wherein the sensor is disposed within a region defined by the coil part.5. The home appliance according to claim 4 , wherein the frame comprises an opening through which at least one of an input end and an output end of the coil part pass claim 4 , and the sensor is disposed in the opening.6. The home appliance according to claim 1 , wherein the heating flow path part comprises:a first guide comprising an inflow part and a discharge part; anda second guide coupled to the first guide and defining a heating flow path through which water flows together with the first guide, and the second guide is a magnetic substance.7. A home appliance comprising:a dispensing port;a heating flow path part communicated with the dispensing port;a heating device configured to heat water flowing ...

METHOD FOR ILLUMINATING KNOBS OF A COOKING APPLIANCE

A method for illuminating a knob of a cooking appliance is provided. The method includes positioning a cooking utensil on a cooking surface of the cooking appliance, rotating the knob in order to activate a heating element of the cooking appliance and sequentially activating a plurality of light emitting diodes beneath the knob. 1. A method for illuminating a knob on a cooking appliance , comprising:positioning a cooking utensil on a cooking surface of the cooking appliance;rotating the knob in order to activate an induction heating element of the cooking appliance; andsequentially activating each light emitting diode (LED) of a plurality of light emitting diodes if the induction heating element does not heat the cooking utensil after said step of rotating, the plurality of light emitting diodes distributed in a circular pattern below the knob.2. The method of claim 1 , wherein said step of sequentially activating comprises a plurality of consecutive activation stages claim 1 , only one LED of the plurality of light emitting diodes emitting light during each activation stage of the plurality of consecutive activation stages.3. The method of claim 1 , wherein each LED of the plurality of light emitting diodes is activated after a respective adjacent LED of the plurality of light emitting diodes is deactivated during said step of sequentially activating.4. The method of claim 1 , wherein the plurality of light emitting diodes operates in a chasing pattern during said step of sequentially activating.5. The method of claim 1 , further comprising constantly operating each LED of the plurality of light emitting diodes at said step of rotating and before said step of sequentially activating.6. The method of claim 5 , wherein light emitted by the plurality of light emitting diodes is a first color at said step of constantly operating and light emitted by the plurality of light emitting diodes is a second color at said step of sequentially activating claim 5 , the first ...

ELECTROMAGNETIC HEATING CONTROL CIRCUIT AND ELECTROMAGNETIC HEATING DEVICE

Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit. The voltage detection end is connected to the positive output end of the rectifier filter circuit by using the synchronous voltage detection circuit. The control chip controls a working state of the switching transistor according to a voltage detected by the voltage detection end. Further disclosed is an electromagnetic heating device. 192-. (canceled)93. An electromagnetic heating control circuit , comprising: a control chip , a rectifying and filtering circuit , a resonance capacitor , a switch transistor , a drive circuit , and a synchronous voltage detection circuit , wherein:the switch transistor comprises a first terminal, a second terminal, and a control terminal configured to control a connection state between the first terminal and the second terminal, the first terminal is connected to a positive output terminal of the rectifying and filtering circuit via the resonance capacitor, the second terminal is connected to a negative output terminal of the rectifying and filtering circuit via a current-limiting resistor; andthe ...

INDUCTION HEATING DEVICE AND METHOD FOR SENSING A COOKING VESSEL ON AN INDUCTION HEATING DEVICE

An induction heating device and a method for sensing a cooking vessel on an induction heating device are provided. The induction heating device may include a controller that converts a resonance waveform generated as current is applied to a sensing coil into a square waveform. The controller may determine whether a cooking vessel placed on the induction heating device has an inductive heating property based on a number of pulses of the converted square waveform. 1. An induction heating device including:a plate configured to receive a cooking vessel thereon;a working coil provided below the plate that heats the cooking vessel using an inductive current;a cooking vessel sensor provided concentrically with the working coil such that the working coil surrounds the cooking vessel sensor; anda controller configured to apply a sensing current to the sensing coil to generate a resonant signal and determine whether the cooking vessel has an inductive heating property based on the generated resonant signal,wherein the cooking vessel sensor includes:a body having a first receiving space, a side wall, and a sensing coil wound by a predetermined number of winding counts on an outer face of the side wall of the body;a magnetic core received in the first receiving space, wherein the magnetic core has a hollow cylindrical shape and a second receiving space formed inside the magnetic core; anda temperature sensor received in the second receiving space.2. The induction heating device of claim 1 , wherein the controller is configured to:convert the resonant signal into a square waveform; andcompare a number of pulses of the square waveform with a predetermined reference value, and determine whether the cooking vessel has an inductive heating property based on the comparison3. The induction heating device of claim 2 , wherein the controller determines that the cooking vessel has an inductive heating property when the number of the pulses of the square waveform is equal to or smaller ...

COOKING APPARATUS

The present disclosure relates to a cooking apparatus having a heating module capable of moving in a two-dimensional space and, particularly, to a cooking apparatus comprising: an upper plate configured to support a cooking vessel, a heating module disposed movably in a space provided under the upper plate and included a coil, and a rail disposed under the heating module to guide movements of the heating module, wherein electric current is supplied to the rail and the heating module supplies an alternating current through the rail. According to the present disclosure, the heating module supplies a current through the rail rather than receiving a current through a separate connection coil or wiring from an external power supply, thereby enabling shorting or disconnection of a current to be prevented even if the heating module moves. 1. A cooking apparatus , comprising:an upper plate configured to support a cooking vessel, a heating module disposed movably in a space provided under the upper plate and included a coil, anda rail disposed under the heating module to guide movements of the heating module, wherein electric current is supplied to the rail and the heating module supplies an alternating current through the rail.2. The cooking apparatus of claim 1 , wherein claim 1 ,the rail includes a first rail on which the heating module is disposed and which is electrically connected to the heating module, andthe heating module is movable along extension direction of the first rail while maintaining an electric connection with the first rail.3. The cooking apparatus of claim 2 , wherein claim 2 ,a pair of the first rails are provided to supply electric current to the heating module, andthe heating module is provided with a pair of contact terminals that are kept in contact with the pair of first rails.4. The cooking apparatus of claim 3 , wherein claim 3 ,a free end of the contact terminal contacts an upper end of the first rail, andthe contact terminal includes a bent ...

AEROSOL GENERATING APPARATUS AND METHOD OF OPERATING SAME

An aerosol generating apparatus has a composite susceptor for heating an aerosol generating material in use thereby to generate an aerosol. The composite susceptor comprises a support portion and a susceptor portion supported by the support portion. The apparatus comprises an induction element arranged for inductive energy transfer to the susceptor portion in use; and a driving arrangement arranged to drive the induction element with an alternating current in use thereby to cause the inductive energy transfer to the susceptor portion, thereby to cause the heating of the aerosol generating material by the composite susceptor, thereby to generate the aerosol. The alternating current has a waveform comprising a fundamental frequency component having a first frequency and one or more further frequency components each having a frequency higher than the first frequency. A method of operating the aerosol generating apparatus is also disclosed. 1. An aerosol generating apparatus comprising:a composite susceptor for heating an aerosol generating material in use thereby to generate an aerosol in use, wherein the composite susceptor comprises a support portion and a susceptor portion supported by the support portion;an induction element arranged for inductive energy transfer to the susceptor portion in use; anda driving arrangement configured to drive the induction element with an alternating current in use thereby to cause the inductive energy transfer to the susceptor portion in use, thereby to cause the heating of the aerosol generating material by the composite susceptor in use, thereby to generate the aerosol in use;wherein the alternating current has a waveform comprising a fundamental frequency component having a first frequency and one or more further frequency components each having a frequency higher than the first frequency.2. The aerosol generating apparatus according to claim 1 , wherein the susceptor portion is a coating on the support portion.3. The aerosol ...

INDUCTION HEATING SYSTEM, INDUCTION HEATING METHOD, OUTPUT MONITORING APPARATUS, OUTPUT MONITORING METHOD, AND INDUCTION HEATING APPARATUS

An induction heating system includes induction heating apparatuses, each including a high-frequency current transformer, a low-frequency current transformer and a heating coil, a high-frequency input switch connected to the high-frequency current transformer, a low-frequency input switch connected to the low-frequency current transformer, a first power source to output a high-frequency electric power and a low frequency electric power, a second power source, a first power source output switch connectable to the first power source, a second power source output switch connectable to the second power source, and a switch controller. Each induction heating apparatus includes a heater controller to send a signal to the switching controller to turn on one of the first power source output switch and the second power source output switch, to turn off the other, and to switch on or off each of the high-frequency input switch and the low-frequency input switch. 1providing a plurality of induction heating apparatuses each having a heating coil, a first power source configured to adjust a ratio of a high frequency output time and a low frequency output time with respect to an output period and to output a high-frequency electric power and a low frequency electric power, a second power source configured to output an electric power of a frequency that is different from a frequency of the electric power output from the first power source, and a switching section;operating the switching section from one of the induction heating apparatuses to select one of a first mode, a second mode, a third mode, and a fourth mode; andinduction heating a workpiece arranged on said one of the induction heating apparatuses,wherein, in the first mode, said one of the induction heating apparatuses receives one of the high-frequency electric power and the low frequency electric power from the first power source,wherein, in the second mode, said one of the induction heating apparatuses receives the ...

COOKING APPARATUS AND METHOD FOR CONTROLLING THE SAME

A cooking apparatus and a method for controlling the cooking apparatus are provided. The cooking apparatus includes induction heating coils that include a high power burner in which a first heating coil and a second heating coil are concentric. The cooking apparatus includes a low power burner that includes a third heating coil and a fourth heating coil, a power supply unit that includes a first AC power supply unit and a second AC power supply unit which have a different phase from each other, and a coil driving unit that provides power supplied by the first AC power supply unit to the first heating coil, and provides power supplied by the second AC power supply unit to at least one of the second heating coil, the third heating coil, and the fourth heating coil. 1. A method for controlling a cooking apparatus , comprising:supplying power of a first alternating current (AC) power supply unit to a first heating coil included in a high power burner;supplying power of a second AC power supply unit to at least one of a second heating coil included in the high power burner and a third heating coil and a fourth heating coil each included in a low power burner; anddistributing the supplied power of the second AC power supply unit to at least one heating coil having a higher priority among a priority of the second heating coil, the third heating coil, and the fourth heating coil.2. The method according to claim 1 , wherein the distributing of the power supplied by the second AC power supply unit includes distributing the power supplied by the second AC power supply unit so that power obtained by subtracting power provided to the third heating coil from maximum power of the second AC power supply unit is provided to the second heating coil and the fourth heating coil.3. The method according to claim 1 , wherein the distributing of the power supplied by the second AC power supply unit includes distributing the power of the second AC power supply unit so that power obtained by ...

SMART TABLE AND METHOD FOR OPERATING THE SAME

A smart table is disclosed. The smart table includes a plate, an inverter configured to convert direct current (DC) power into alternative current (AC) power and to supply the AC power, a coil unit disposed below the plate and including a plurality of working coils heated by the AC power, a radio frequency identification (RFID) reader configured to recognize an RFID tag of a home appliance placed on the plate and to receive information on the home appliance from the RFID tag, and a processor configured to drive one or more of the plurality of working coils as wireless power transmission coils to perform control to transmit wireless power to the home appliance based on the received information. 1. A smart table comprising:a plate;an inverter configured to convert direct current (DC) power into alternative current (AC) power and to supply the AC power;a coil unit disposed below the plate and comprising a plurality of working coils configured to be heated by the AC power;a radio frequency identification (RFID) reader configured to recognize an RFID tag of a home appliance placed on the plate and to receive information on the home appliance from the RFID tag, the RFID reader comprising an antenna disposed adjacent to at least one of the plurality of working coils;a spacer or an insulator that is disposed between the antenna of the RFID reader and the at least one of the plurality of working coils; anda processor configured to selectively drive one or more of the plurality of working coils (i) as wireless power transmission coils to perform control to transmit wireless power to the home appliance based on the received information or (ii) as working coils for induction heating to heat one or more objects disposed on the plate.2. The smart table according to claim 1 , wherein the processor identifies a location of the recognized RFID tag and performs control to transmit wireless power to the home appliance through a working coil corresponding to the identified location.3. ...

Wireless power transfer apparatus and wireless power transfer system

A wireless power transfer apparatus according to the present invention is a wireless power transfer apparatus for transferring power to a power receiving apparatus. The wireless power transfer apparatus includes a support on which the power receiving apparatus is placed, a coil disposed below the support, the coil generating a high-frequency magnetic field upon receiving supply of a high-frequency current, a communication device disposed below the support to perform radio communication with the power receiving apparatus, a first magnetic shield member made of an electric conductor, the first magnetic shield member being disposed between the communication device and the coil, and a second magnetic shield member made of an electric conductor or a magnetic body, the second magnetic shield member being disposed on at least one of a lower surface and a lateral surface of the communication device.

MULTI-FREQUENCY CONTROLLERS FOR INDUCTIVE HEATING AND ASSOCIATED SYSTEMS AND METHODS

The present technology is generally directed to multi-frequency controllers for inductive heating and associated systems and methods. In some embodiments, systems associated with the present technology are configured to precisely heat a module via a coil to a target temperature using oscillating, pulsed electrical signals associated with unique frequencies and/or capacitance values. Each unique frequency can correspond to heating the module to a particular depth, relative to an outer surface of the module. For example, a first pulsed electrical signal having a first frequency can heat the module to a first depth, and a second pulsed electrical signal having a second frequency can heat the module to a second depth different than the first depth. The system can further include a thermal sensor for measuring a temperature associated with at least one of the module or a fluid associated with the module. Based on the measured temperature, the system can adjust signal delivery parameters of the first and/or second electrical signals. 1. A system for inductively heating a load , the system comprising:an inductor coil configured to heat a fluid flowing through a module, the module including a core;a thermal sensor configured to sense a temperature associated with the core or the fluid;a first set of capacitors configured to be operably coupled to the inductor coil;a second set of capacitors configured to be operably coupled to the inductor coil; and send interleaving electrical signals to the inductor coil, the electrical signals including a first electrical signal having a first frequency and a first duty cycle, and a second electrical signal having a second frequency, different than the first frequency, and a second duty cycle, wherein the first and second frequencies are selected from a plurality of predetermined frequencies, and wherein the first electrical signal causes the first set of capacitors to be electrically connected to the inductor coil, and the second ...

METHOD FOR BOIL DETECTION AND INDUCTION HOB INCLUDING A BOIL DETECTION MECHANISM

The invention relates to a method for boil detection at a heating zone of an induction hob (), the method comprising the steps of: —disabling (S) a power control mechanism of the induction hob by setting the frequency of the AC-current provided to an induction coil of the induction hob to a fixed value; —measuring (S) values of an electrical parameter provided within the induction hob (); —interpolating (S) the measured electrical parameter values by gathering a plurality of values of the electrical parameter within a time window and calculating the average value of said gathered plurality of values thereby obtaining interpolated electrical parameter values. —calculating (S) a gradient measure indicative for the differential change of the interpolated electrical parameter values over time; —determining (S) the boil point based on the calculated gradient measure. 1. A method for boil detection at a heating zone of an induction hob , the method comprising the steps of:disabling a power control mechanism of the induction hob by setting a frequency of AC-current provided to an induction coil of the induction hob associated with the heating zone to a fixed value;measuring values of an electrical parameter provided within the induction hob;interpolating the measured electrical parameter values by gathering a plurality of said values of the electrical parameter within a time window and calculating an average value of said gathered plurality of values thereby obtaining interpolated electrical parameter values;calculating a gradient measure indicative for a differential change of the interpolated electrical parameter values over time;determining a boil point based on the calculated gradient measure.2. The method according to claim 1 , wherein the boil point is determined by detecting whether the calculated gradient measure is zero and/or changes in its sign.3. The method according to claim 1 , wherein the electrical parameter is a peak current of the induction coil claim 1 , ...

INDUCTION HEATING COOKING DEVICE

Provided is an induction cooking apparatus including a heating part including a working coil forming a heating region and configured to heat a container placed in the heating region, an inverter configured to supply a driving voltage to the working coil, a plurality of sensing coils arranged along a circumferential portion of the working coil and sensing the container placed in the heating region, and a controller configured to determine whether to drive the inverter on the basis of information acquired from the plurality of sensing coils. 1. An induction cooking apparatus comprising:a body having an upper surface;a heating device on the upper surface of the body, the heating device including a working coil for heating a container to be provided at a heating region on the upper surface of the body;an inverter configured to supply a driving voltage to the working coil;a plurality of sensing coils arranged along a circumferential portion of the heating device, the plurality of sensing coils including a first one of the sensing coils and a second one of the sensing coils to detect the container at the heating region; anda controller configured to determine whether to drive the inverter based on of information obtained from the plurality of sensing coils.2. The induction cooking apparatus of claim 1 , wherein the controller is to compare a first sensing value of the first sensing coil and a second sensing value of the second sensing coil with at least one set value claim 1 , and the controller is to determine at least one of whether the container is provided at the heating region and whether the container is thermally conductive based on the comparing of the first and second sensing values with the at least one set value.3. The induction cooking apparatus of claim 2 , wherein the at least one set value includes a first state set value for determining whether the container at the heating region is eccentric.4. The induction cooking apparatus of claim 3 , wherein when the ...

HIGH-FREQUENCY HEATING METHOD FOR HOT STAMPING PROCESS

A high-frequency heating method for a hot stamping process includes: a first heating step of high-frequency heating a steel sheet, which has an aluminum (Al) coating layer formed on an iron (Fe)-based base material, to a first target temperature at a first heating rate; a second heating step of melting the coating layer by high-frequency heating the steel sheet, which has passed through the first heating step, to a second target temperature at a second heating rate, wherein the second heating rate is lower than the first heating rate; and a third heating step of high-frequency heating the steel sheet, which has passed through the second heating step, to a third target temperature at a third heating rate, wherein the third heating rate is lower than the second heating rate. A compound is formed by a reaction between a material of the coating layer and a material of the base material in the second heating step. Therefore, the coating layer is not shifted even when high-frequency heating is performed at a temperature equal to or higher than the melting point of the coating layer. 1. A high-frequency heating method for a hot stamping process , comprising:a first heating step of high-frequency heating a steel sheet, which has an aluminum (Al) coating layer formed on an iron (Fe)-based base material, to a first target temperature at a first heating rate;a second heating step of melting the coating layer by high-frequency heating the steel sheet to a second target temperature at a second heating rate, wherein the second heating rate is lower than the first heating rate; anda third heating step of high-frequency heating the steel sheet to a third target temperature at a third heating rate, wherein the third heating rate is higher than the second heating rate,wherein a compound is formed by a reaction between the coating layer and the base material in the second heating step.2. The high-frequency heating method of claim 1 , wherein claim 1 , in the second heating step claim ...

TEMPERATURE DETERMINATION

Disclosed are methods and an apparatus for determining a temperature of a susceptor of an aerosol generating device, the susceptor being for inductive heating by a RLC resonance circuit. The apparatus is arranged to determine a frequency characteristic of a peak of a frequency response of the RLC resonance circuit, and determine, based on the determined frequency characteristic, the temperature of the susceptor. Also disclosed is an aerosol generating device comprising the apparatus. 1. An apparatus for determining a temperature of a susceptor of an aerosol generating device , the susceptor being for inductive heating by a RLC resonance circuit , the apparatus comprising: determine a frequency characteristic of a peak of a frequency response of the RLC resonance circuit; and', 'determine, based on the determined frequency characteristic, the temperature of the susceptor., 'a controller arranged to2. The apparatus according to claim 1 , wherein the frequency characteristic is a resonant frequency of the RLC resonance circuit.3. The apparatus according to claim 1 , wherein the frequency characteristic is indicative of a bandwidth of the peak of the frequency response of the RLC circuit.4. The apparatus according to claim 1 , wherein the controller is further arranged to:determine data indicative of the temperature as a function of the frequency characteristic; andwherein the temperature is determined based on the determined data and the determined frequency characteristic.5. The apparatus according to claim 4 , wherein the data comprises one or more parameters of a functional form describing the temperature as a function of the frequency characteristic.6. The apparatus according to claim 4 , wherein the data is a constant of proportionality between the temperature and the frequency characteristic.7. The apparatus according to claim 4 , wherein the data comprises a series of data points of the temperature measured as a function of the frequency characteristic.8. The ...

HEAT-FIXING DEVICE

A fixing device includes: a rotatable member including an electroconductive layer; a helical coil having a helical axis direction along a generatrix direction of said rotatable member; a magnetic member not forming a loop outside the electroconductive layer; a frequency setting portion for setting a frequency of an AC current caused to flow through said coil; and a temperature detecting portion for detecting a temperature of said rotatable member, including a first temperature detecting member and a second temperature detecting member. The electroconductive layer generates heat through electromagnetic induction heating by magnetic flux resulting from the AC current, and an image is fixed on a recording material by heat of said rotatable member. The frequency setting portion sets the frequency depending on a value of a difference between a detection temperature of said first temperature detecting member and a detection temperature of said second temperature detecting member. 1. A fixing device for fixing an image on a recording material , comprising:a rotatable member including an electroconductive layer;a helical coil provided inside said rotatable member, said helical coil having a helical axis direction along a generatrix direction of said rotatable member;a magnetic member extending in a helically shaped portion formed by said coil, wherein said magnetic member does not from a loop outside the electroconductive layer;a frequency setting portion for setting a frequency of an AC current caused to flow through said coil; anda temperature detecting portion for detecting a temperature of said rotatable member, said temperature detecting portion including a first temperature detecting member for detecting the temperature of said rotatable member at a central portion with respect to the generatrix direction and a second temperature detecting member for detecting the temperature of said rotatable member at an end portion with respect to the generatrix direction,wherein ...

INDUCTION COOKTOP

An induction cooktop may include: a cooking surface; an induction coil; electronic circuitry coupled to said induction coil; and a housing surrounding at least a portion of said induction coil and at least a portion of said electronic circuitry, and said housing comprising a fan chamber comprising: a fan; at least one ribbed wall; and a fan cover covering at least a portion of said fan so as to direct airflow over said electronic circuitry. According to various exemplary embodiments, various preset operating ranges, precise temperature control using discrete increments may be used, as well as power calibration, noise reduction, ultra wide temperature range cooking, flexible programming, extensive multi-stage long duration cooking and memories, including selectable delays, pause features, high temperature searing, low temperature cooking, ultra high frequency high temperature operation, immediate fan shutoff, multiple temperature unit convertible display, multi-stage, and/or multi-step cooking, are disclosed. 1. An induction cooktop comprising:a cooking surface;an induction coil;electronic circuitry coupled to said induction coil; and a fan;', 'at least one ribbed wall; and', 'a fan cover covering at least a portion of said fan so as to direct airflow over said electronic circuitry., 'a housing surrounding at least a portion of said induction coil and at least a portion of said electronic circuitry, and said housing comprising a fan chamber comprising2. The induction cooktop according to claim 1 , further comprising:a plurality of preset temperature ranges.3. The induction cooktop according to claim 2 , wherein said plurality of preset temperature ranges comprises at least 6 claim 2 , or at least 7 preset temperature ranges.4. The induction cooktop according to claim 1 , further comprising at least one thermistor electronically coupled to said electronic circuitry and wherein said thermistor is placed in contact with said glass cooking surface.5. The induction ...

INDUCTION HEATER

An induction heater includes a plurality of heating coils, a plurality of inverters, a plurality of switching circuits, command unit, sensor group, and container detection unit. The number of inverters supplying a high-frequency current to the heating coils is less than the number of heating coils. Each of the switching circuits switches an electric path of each of the heating coils such that each heating coil is connected or not connected to any of the inverters. The command unit controls driving of the inverters and switching of the switching circuits. Each sensor in the sensor group detects a response of a resonance circuit including the heating coil relative to power supply from the inverters. The container detection unit detects whether or not heating target is placed on the heating coil based on an output of the sensor. This enables to retain safety and reduce cost of the induction heater equipped with the plurality of heating coils. 1. An induction heater comprising:a cooktop on which a heating target is placed;a plurality of heating coils including first and second heating coils, placed beneath the cooktop;a plurality of inverters including first and second inverters configured to supply power to the heating coils;a plurality of switching circuits configured to switch electric paths of the heating coils so that each of the heating coils is connected to any of or none of the inverters;a command unit configured to control power supply from the inverters and switching of the switching circuits;a sensor configured to detect a response of a resonance circuit including one of the plurality of heating coils, relative to power supply from the inverters; anda container detection unit configured to detect presence of the heating target on each of the heating coils based on an output of the sensor,whereina number of the plurality of inverters is less than a number of the plurality of heating coils, andthe command unit switches the switching circuits such that one of ...

ELECTROMAGNETIC PRINT NOZZLE FOR DIRECT-WRITE ADDITIVE MANUFACTURING

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material and a plurality of rollers for advancing the working material. An electromagnetic heater is provided to heat and deposit molten working material as a new supply of working material is forced through the material guide. 1. A printing nozzle for use in deposition for additive manufacturing comprising:a plurality of rollers configured to be in lateral contact with outside edges of a working material for advancing the working material forward during operation;a material guide for permitting a desired flow of the working material;a tip positioned at an end of the material guide for depositing the working material in an appropriate position in space; andan electromagnetic heating element positioned with respect to the material guide.2. The printing nozzle of wherein the rollers are configured to contact electromagnetically susceptible slugs of material during operation.3. The printing nozzle of wherein the rollers are configured to contact electromagnetically susceptible filaments of material during operation.4. The printing nozzle of wherein the electromagnetic heating element is positioned around the tip.5. The printing nozzle of wherein the electromagnetic heating element is position around the material guide.6. The printing nozzle of wherein the rollers comprise one or more sets of gears.7. The printing nozzle of wherein the rollers comprise knurled rollers.8. The printing nozzle of further comprising a plurality of channels within the material guide configured to permit direct contact between the working material and the rollers during operation.9. The printing nozzle of wherein the rollers are positioned at multiple places along the material guide.10. The printing nozzle of wherein one or more of the plurality of rollers are fixed and one or more of the plurality of rollers are moveable.11. The printing nozzle of wherein the moveable rollers ...

ELECTROMAGNETIC PRINT NOZZLE FOR DIRECT-WRITE ADDITIVE MANUFACTURING WITH RESISTIVE RENDITIONS

A method and apparatus for additive manufacturing that includes a material guide for directing a supply of working material. An advancement mechanism comprising one or more pistons, pushers, plungers and/or pressure regulation systems are positioned behind at least a portion of the supply of working material for advancing the working material forward. The working material is heated using an electro-magnetic heating element and the melted or molten working material is deposited from a tip positioned at an end of the material guide. 1. A printing nozzle for use in deposition for additive manufacturing comprising:an advancement mechanism for advancing a working material forward during operation;a primary material guide for permitting a desired flow of the working material;a tip positioned at an end of the material guide for depositing the working material in an appropriate position in space; andan electro-magnetic heating element positioned with respect to the primary material guide.2. The printing nozzle of wherein the advancement mechanism comprises a piston.3. The printing nozzle of wherein the advancement mechanism comprises a pressure regulation system.4. The printing nozzle of wherein the primary material guide comprises a sealed pressurized chamber.5. The printing nozzle of wherein the advancement mechanism comprises a piston and a pressure regulation system wherein the pressure regulation system forces the piston into the working material.6. The printing nozzle of further comprising a secondary material guide positioned in parallel with the primary material guide.7. The printing nozzle of further comprising a gate positioned between the secondary material guide and the primary material guide claim 6 , the gate selectable to close off at least one of the secondary material guide and the primary material guide.8. The printing nozzle of wherein the gate is selectable to simultaneously open the secondary material guide and close the primary material guide.9. The ...

DETERMINING RESONANT FREQUENCY FOR QUASI-RESONANT INDUCTION COOKING DEVICES

Systems and methods of quasi-resonant induction heating are provided. In particular, a method for evaluating the resonant frequency of a quasi-resonant induction cooking device can be provided. The method can include generating a startup pulse, receiving multiple feedback pulses from a resonant frequency feedback circuit, measuring a pulse width of each of the feedback pulses, calculating an average pulse width based upon the feedback pulses and determining the resonant frequency based at least in part on the average pulse width and a transfer function. 1. A method for determining a resonant frequency of a quasi-resonant inverter in an induction cooking device , wherein the quasi-resonant inverter includes a parallel configuration of an inductor , a capacitor , a cooking vessel , a switching element and a resonant frequency feedback circuit , the method comprising:generating, by one or more controllers, a startup pulse;receiving, by one or more controllers, multiple feedback pulses from a resonant frequency feedback circuit;measuring a pulse width of each of the feedback pulses;calculating a sync pulse width based at least in part on the feedback pulses; anddetermining the resonant frequency based at least in part on the sync pulse width and a transfer function.2. The method of claim 1 , wherein the feedback pulses are based claim 1 , at least in part claim 1 , a voltage across a collector-emitter junction of the switching element.3. The method of claim 2 , wherein the resonant frequency feedback circuit is a voltage comparator.4. The method of claim 3 , wherein the switching element is an insulated gate bipolar transistor.5. The method of claim 4 , wherein the method further comprises determining if the number of feedback pulses received claim 4 , by the one or more controllers claim 4 , is within a first predetermined range.6. The method of claim 5 , wherein the method further comprises determining if the pulse width of feedback pulses received claim 5 , by the ...

METHOD FOR OPERATING AN INDUCTION COOKING HOB AND COOKING HOB USING SUCH METHOD

A method for operating an induction cooking hob comprising a plurality of inductors in association with induction resonant inverters operating in load-dependent frequency ranges comprises a simultaneous activation of inductors, in at least one phase of the control period, independently from their association to one or more overlying cooking utensils but only according to at least partial overlapping of associated operating frequency ranges. 1. Method for operating a flexible induction cooking hob comprising a plurality of inductors distributed next to each other to form a bi-dimensional array , said inductors being energizable by inverters , said inductors being overlaid by a common cooking utensil or by different cooking utensils , wherein the method comprises the following steps:obtaining for each of said plurality of inductors a target energy or a target power to be delivered;acquiring for each of said inductors in conjunction with its energizing inverter, a power vs. frequency curve;defining a predetermined control (Tprog) period shorter than a thermal time contacts of at least one of said cooking utensils, and longer than one half-period of a mains power supply;establishing for each of said inductors, in conjunction with its energizing inverter, an operating frequency range associated to said power vs. frequency curve;establishing an activation sequence of said inverters in which each of said inductors can be energized alone and/or in combination with at least a second inductor of said plurality of inductors, in order that each single inductor configured to deliver said target energy, or said target power on average, over said control period (Tprog), said combination of inductors being selected irrespectively of whether said each of said inductors and said at least second inductor are overlaid by the common cooking utensil or by different cooking utensils, and wherein said each of said inductors and said at least second inductor are provided with respective ...

CO-AXIAL MULTI-ZONE INDUCTION COOKING APPARATUS

An induction heating system with a plurality of resonant inverter tanks can be provided. The induction heating system can include a power source configured to supply power to the heating system and a plurality of parallel resonant inverter tanks in electrical connection with the power source. Each of the parallel resonant inverter tanks can include one or more parallel resonant capacitors, one or more parallel induction coils and one or more switches configured to disconnect each of the parallel resonant inverter tanks from the power source. The induction heating system can include a controller configured to perform operations, wherein the operations include determining when a cooking vessel is present at each induction coil and in response to determining that a cooking vessel is not present at a resonant inverter tank, operating the one or more switches such that the parallel resonant inverter tank is disconnected from the power source. 1. An induction heating system , the induction heating system comprising:a power source configured to supply power to the induction heating system;a plurality of parallel resonant inverter tanks configured to be in electrical communication with the power source, wherein each of the parallel resonant inverter tanks include one or more parallel resonant capacitors, one or more parallel induction coils and one or more switches configured to disconnect each of the parallel resonant inverter tanks from the power source;a controller configured to perform operations, wherein the operations include determining whether a cooking vessel is present at each induction coil and in response to determining that a cooking vessel is present at a resonant inverter tank, operating the one or more switches such that the parallel resonant inverter tank is connected to the power source.2. The induction heating system of claim 1 , wherein a capacitance of each of the one or more parallel resonant capacitors is such that the current flowing through each ...

System and Method for Controlling Multiple IGBT Temperatures in a Power Converter of an Electrical Power System

A method for monitoring and controlling IGBT temperature in a power converter of an electrical power system includes generating a plurality of temperature signals from a plurality of switching devices via a plurality of temperature sensors. The method also includes selecting a primary switching device from the plurality of switching devices to estimate a primary temperature thereof. Further, the method includes determining the primary temperature of the primary switching device via a temperature measurement circuit communicatively coupled to the primary switching device. Moreover, the method includes comparing remaining temperature signals (or a function thereof) to the primary temperature via at least one comparator circuit. If one of the remaining temperature signals (or the function thereof) exceeds the primary temperature, the method also includes implementing a control action to address the increased temperature. 1. A method for controlling temperature of a plurality of switching devices of a power converter of an electrical power system connected to a power grid , the method comprising:generating, via a plurality of temperature sensors communicatively coupled to the plurality of switching devices, a plurality of temperature signals from the plurality of switching devices;selecting a primary switching device from the plurality of switching devices to estimate a primary temperature thereof;determining, via a temperature measurement circuit communicatively coupled to the primary switching device, the primary temperature of the primary switching device based on a primary temperature signal of the plurality of temperature signals;comparing, via at least one comparator circuit communicatively coupled to each of the plurality of temperature sensors, remaining temperature signals from the plurality of temperature signals or a function of the remaining temperature signals to the primary temperature; and,if one of the remaining temperature signals or the function of ...