Abstract: An induction coil furnace system includes at least an active induction coil and a passive induction coil surrounding a furnace volume. The active induction coil is connected to an AC power supply, while the passive induction coil is connected in parallel with one or more capacitors forming an L-C tank circuit. The connections to the AC power supply and the one or more capacitors are optionally an interchangeable connection, such that the active coil can become the passive coil upon disconnection of the AC power supply and connection of the one or more capacitors. Likewise, the passive coil can become the active coil upon disconnection of the one or more capacitors and connection of the AC power supply. The active coil is selectively electrically connected to the passive coil via a separable electrical connection, whereupon separation, the active coil and the passive coil are electrically isolated.

Abstract: A control method for a cooking apparatus is disclosed. The disclosed control method for the cooking apparatus comprises the steps of: receiving an input of an output level for a heating coil; determining a plurality of driving frequencies for a driving power on the basis of the output level; generating a driving power alternately having the plurality of determined driving frequencies; and providing the generated driving power to the heating coil.

Abstract: A method is provided for controlling average power delivered to coils of a flexible induction cooktop having a plurality of coils that are arranged adjacent to one another in a non-overlapping manner to form an array. The method includes: a) identifying a group of the plurality of coils that are underlying one or more cookware items; b) providing power to at least one coil of the group of coils underlying one or more cookware items; and c) at the same time, not providing power to coils of the group of coils underlying the cookware items that are adjacent to the at least one coil to which power is provided to prevent interaction between adjacent coils of the group of coils.

Abstract: The invention relates to a method for determining properties of the electrical current provided to an induction heating element (2) of an induction cooking appliance (1). The induction cooking appliance (1) has a heating power energy unit (3) including a heating power generator (4) with at least one switching element (5) adapted to provide pulsed electric power to said induction heating element (2). The induction cooking appliance (1) also has an oscillating circuit (6) with at least one resonance capacitor (6.1, 6.2). The induction heating element (2) is electrically coupled with the heating power generator (4) and the oscillating circuit (6). The induction cooking appliance (1) also has a control entity (8), wherein an input of a measurement circuit (9) is coupled with a node of the heating power energy unit (3).

Abstract: An induction cooktop includes a ceramic cooking surface in connection with a housing. A plurality of inductors is disposed in the housing and each of the inductors is in communication with a controller. The controller is configured to selectively activate each of the inductors in response to an input received at the user interface identifying an active inductor of the plurality of inductors to activate. The controller is further configured to detect a presence of a pan proximate the active inductor in response to a detection signal and identify a small pan condition in response to a phase angle detected for the active inductor of the plurality of inductors.

Abstract: The present invention relates to an induction heating cooker including a synchronization circuit for a plurality of inverters, comprising: a first inverter including a first switching circuit unit for applying a first power source to a first heating coil, and a first control unit for controlling the first switching circuit unit; and a second inverter including a second switching circuit unit for applying a second power source to a second heating coil, and a second control unit for controlling the second switching circuit unit, wherein the first inverter further includes a first insulated signal transfer unit for controlling an operation of the second switching circuit unit, and the first control unit may match an operating frequency of the second switching circuit unit with an operating frequency of the first switching circuit unit by using the first insulated signal transfer unit.

Abstract: An induction heater device and a method for controlling an induction heating device are provided. The method may include determining a first target frequency of a first working coil corresponding to the drive command for the first working coil, determining a second target frequency of a second working coil corresponding to the drive command for the second working coil, and determining a final drive frequency of the first working coil and a final drive frequency of the second working coil based on the first target frequency and the second target frequency, respectively.

Abstract: The present disclosure provides a method for controlling a power of an electromagnetic cooking appliance and an electromagnetic cooking appliance. The electromagnetic cooking appliance includes a first coil disk and a second coil disk. Each of the first coil disk and the second coil disk corresponds to an independent resonance circuit. After obtaining a target power of the electromagnetic cooking appliance, a heating period of the electromagnetic cooking appliance is determined based on the target power, each heating period including at least one first heating time period and at least one second heating time period. The first coil disk is controlled to heat in the first heating time period, and the second coil disk to heat in the second heating time period, such that the first coil disk and the second coil disk are heated alternately to reduce an interference of harmonic current and voltage flicker.

Abstract: Disclosed herein is a cooking apparatus. The cooking apparatus includes a cooking plate, a plurality of induction heating coils installed under the cooking plate, a plurality of drivers configured to supply driving power to the plurality of induction heating coils, and a controller configured to control the plurality of drivers to drive a plurality of groups to which the plurality of induction heating coils belong, respectively. Power output by a first driver, among the plurality of drivers, which drives a first group among the plurality of groups may be increased and power output by a second driver, among the plurality of drivers, which drives a second group among the plurality of groups may be decreased.

Abstract: A system for the production of a polycrystalline silicon product is disclosed. The system includes a reaction chamber, a susceptor, an induction unit, and a plurality of energy sources. The reaction chamber has a reactor wall, and the susceptor encircles the reactor wall. The induction heater surrounds the susceptor, and has multiple induction coils for producing heat in the susceptor. The coils are grouped into a plurality of zones. The plurality of energy sources supply electric current to the coils. Each energy source is connected with the coils of at least one zone.

Abstract: The invention relates to a method for calibrating a power control loop of an induction hob (1), the induction hob (1) comprising a power stage (10) including at least one induction element (21), a measurement unit (12) and a control unit (11), the method comprising the steps of: —coupling the at least one induction element (21) with a reference load; —powering the power stage (10) at predefined working conditions by means of said control unit (11); —deriving a measurement value being indicative for the power transferred from the power stage (10) to the reference load by means of said measurement unit (12); —providing the measurement value to the control unit (11); —calculating a correction value based on the measurement value and a reference value; —storing the correction value in a storage entity in order to modify measurement values provided by the measurement unit (12) based on the correction value when operating the induction hob (1).

Abstract: Methods for treating a patient using time varying magnetic field are described. The treatment methods combine various approaches for aesthetic treatment. The methods are focused on enhancing a visual appearance of the patient.

Abstract: A method for assigning a unique identifier to a hob induction coil of an induction hob including a plurality of hob induction coils, the method including the steps of: placing one or more device induction coils of a device above one or more hob induction coils such that at least one device induction coil and at least one hob induction coil are facing each other; establishing a communication link between the device induction coil and the hob induction coil, wherein information regarding a unique identifier is transmitted to the hob induction coil by the device induction coil; and receiving information regarding the unique identifier by the hob induction coil and storing the identifier associated with the hob induction coil within a memory of the induction hob.

Abstract: An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece can be uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated are established on a workpiece so as to extend in one direction and the areas to be heated are induction-heated, the deformation amount on one edge of the areas to be heated is different from that on the other. This induction heating device includes: heating coils facing a portion of the areas to be heated when the workpiece is induction-heated; and a relative transfer means for transferring the workpiece and the heating coils along one direction in a relative manner, and the heating coils are disposed so as to correspond to the areas to be heated during the heating period.

Abstract: Provided is a component for a network system. The component for a network system which is communicable with the other component includes a communication unit for communicating with the other component, an input part for inputting a command related to an operation of the component, and a control part for controlling the operation of the component. The component includes a power saving function in which the component is operable on the basis of energy information.

Abstract: A network system is provided. The network system includes: at least one component selected from an energy receiving unit receiving energy and an energy management unit managing the energy receiving unit. The energy receiving unit or the energy management unit receives energy rate related information; an energy usage amount or a usage rate of when the component is controlled on the basis of at least the energy rate related information is less than that of when the component is controlled without the basis of at least energy rate related information; if the energy rate related information is high cost information, a function of one component constituting the energy receiving unit is limited; and an operating time or an output of the energy receiving unit is adjusted in correspondence to the limited function of one component.

Abstract: An object is to provide an induction heating method having a high power factor in which when thermal processing is performed through a plurality of heating coils receiving the supply of the current to generate mutual induction. In an induction heating method using an induction heating device that includes self-resonant circuits which feeds currents of equal frequency to a plurality of heating coils receiving the supply of the current to generate mutual induction is connected, wherein adjustment or control is performed to carry out an operation such that a first ratio of a reactance component of a mutual induction impedance to a resistance component of the mutual induction impedance between the adjacent self-resonant circuits and a second ratio of a reactance component of a self-impedance to a resistance component of the self-impedance in the self-resonant circuit are made equal to each other.

Abstract: According to an embodiment, an induction heating coil includes a heating conductor portion which is formed of a conductor member and has a zigzag shape in which a bent portion opened to one side in a first direction and a bent portion opened to the other side in the first direction are alternately continuously arranged in opposite directions along a second direction crossing the first direction.

Abstract: A high-frequency induction heating apparatus is provided with a high-frequency oscillation apparatus, a heating coil, a high-frequency transformer and the like, the heating coil has a first coil through which prescribed current outputted by the high-frequency oscillation apparatus is flown, a second coil through which current different from the predetermined current is flown by the high-frequency transformer, and the first coil heats a trunk part and a bottom side part of the can body, and the second coil heats the trim side part of the can body.

Abstract: A method of fabricating a thermoplastic component using inductive heating is described. The method includes positioning a plurality of induction heating coils to define a process area for the thermoplastic component, wherein the plurality of induction heating coils comprises a first set of coils and a second set of coils. The method also includes controlling a supply of electricity provided to the plurality of inductive heating coils to intermittently activate the coils. The intermittent activation is configured to facilitate prevention of electromagnetic interference between adjacent coils.

Abstract: The present invention relates to a contactlessly chargeable heater. In one example, the contactlessly chargeable heater includes: an induction patch emitting magnetic field by means of current applied to an inner coil; and a heating body, receiving the magnetic field from the charging patch to perform a contactless charging operation, and including a conductive metal yarn for emitting heat via the power generated through the contactless charging operation. The conductive metal yarn is woven together using threads within the heating body.

Abstract: The present invention includes: a plurality of induction heating coils (11, 12, 13) which are disposed adjacently; capacitors (21, 22, 23) each of which is connected in series thereto; a plurality of inverters (30, 35, 31) each of which applies a high frequency voltage converted from a DC voltage to each series resonant circuit of the induction heating coil and the capacitor; and a control circuit (50) which operates the plurality of the inverters with a same frequency and current synchronization, controls so that a phase difference becomes minimal at a specific inverter, which supplies the maximum power to the plurality of the induction heating coils, between the high frequency voltage generated therefrom, and a resonant current flowing the series resonant circuit, and set a DC power supply voltage Vdc applied to the plurality of the inverters so that the output voltages (Vinv) become greater than mutual induction voltages (Vm).

Abstract: An electromagnetic induction heater includes a supporting plate and a plurality of first induction coils. The supporting plate has a heating zone for placing at least one foodstuff container thereon. The heating zone includes a plurality of sub-heating zones. The first induction coils are located at the positions corresponding to the sub-heating zones respectively for heating the at least one foodstuff container. The first induction coils have elliptic profiles, and are located at an inner side of the supporting plate.

Abstract: A switch control module for an electric device is provided. The switch control module includes a substrate and at least one piezoelectric element. The substrate includes a first surface and a second surface. Moreover, at least one operating area is formed on the first surface. The at least one piezoelectric element is attached on the second surface of the substrate and aligned with the at least one operating area. In response to an external force exerted on the at least one operating area of the substrate, the at least one piezoelectric element is subjected to a deformation. According to an amount of the deformation, a voltage signal is generated to control operations of the electric device.

Abstract: In an induction heater, preheated, pressurized air is further heated in the heating cabinet and also drawn into the coil tube via a suction fan. The simultaneous pulling and pushing of the twice-heated air through the tube provides superior air flow to pick up more moisture from the can ends being dried. The tube ends rest on upwardly concave collars and are held in place by gravity, with a single screw acting as a stop above to prevent upward movement. Removal requires only removing the single screw at each end then lifting the tube straight up out of the cabinet, which is facilitated by providing a hinged cover on the cabinet.

Abstract: Provided is an induction heat cooking apparatus. The induction heat cooking apparatus includes a rectifying part rectifying an input voltage to output a DC voltage, an inverter switching the DC voltage outputted through the rectifying part to generate an AC voltage, a first heating part operated by the AC voltage applied from the inverter, a second heating part connected to the first heating part in parallel, the second heating part being operated by the AC voltage applied from the inverter, and a switching signal generation part controlling an operation state of each of the first and second heating parts from the inverter according to an operation mode inputted from the outside. The switching signal generation part includes a photo coupler.

Abstract: A tuned power amplifier includes: a tuning capacitor connected in series with multiple loaded chokes that represent an inductance of an oscillator, and multiple semiconductor power switches connected to the series connections between the tuning capacitor and the loaded chokes. The loaded chokes may be induction heating coils of inductively heated fuel injectors. The induction heating coils may be connected to a common voltage source. An on state and an off state of the semiconductor power switches may be synchronized with, or at a frequency below, a natural resonant frequency of the tuned power amplifier.

Abstract: Provided is an induction heat cooking apparatus. The induction heat cooking apparatus includes a rectifying part rectifying an input voltage to output a DC voltage, an inverter switching the DC voltage outputted through the rectifying part to generate an AC voltage, a first heating part operated by the AC voltage applied from the inverter, a second heating part connected to the first heating part in parallel, the second heating part being operated by the AC voltage applied from the inverter, and a switching signal generation part controlling an operation state of each of the first and second heating parts from the inverter according to an operation mode inputted from the outside. The switching signal generation part includes an inverter driver including a bootstrap circuit.

Abstract: Provided is an induction heat cooking apparatus. The induction heat cooking apparatus includes a rectifying part rectifying an input voltage to output a DC voltage; an inverter switching the DC voltage outputted through the rectifying part to generate an AC voltage; a first heating part operated by the AC voltage applied from the inverter; a second heating part connected to the first heating part in parallel, the second heating part being operated by the AC voltage applied from the inverter; and a switching signal generation part controlling an operation state of each of the first and second heating parts from the inverter according to an operation mode inputted from the outside. The switching signal generation part includes a pulse transformer.

Abstract: A power supply device and method for a household appliance is disclosed. The power supply device comprises a switching converter having a rectifying stage, electrically connected with the mains, a bus capacitor, electrically connected in parallel with at least one output terminal of the rectifying stage, a first and second resonant tank, electrically connected with at least a terminal of the bus capacitor, a first and second switching device respectively having a first and second switching period and are connected respectively with the first and second resonant tank. The power supply device further comprises a control means for controlling the first and second switching device. The control means operates at least one of a first switching device independently from the operating conditions of a second switching device. The control means operates the second switching device depending on the operating conditions of the first switching device.

Abstract: An electronic induction heating cooker is provided. The electronic induction heating cooker may include a rectifier that rectifies an input voltage into a direct current (DC) voltage and output the DC voltage, an inverter including first, second and third switches connected in series between a positive power source terminal and a negative power source terminal to generate an alternating current (AC) voltage by switching the DC voltage, a first heater driven by the AC voltage so as to heat a first cooking container, a second heater connected in parallel to the first heater and driven by the AC voltage so as to heat a second cooking container, and a switching controller that generates a switching signal for controlling the first and second heaters in accordance with a set of operating conditions input thereto and adjusts a duty cycle of the switching signal.

Abstract: An induction heating cooker is provided. The induction heating cooker may include a rectifier to rectify an input voltage into a direct current (DC) voltage and output the DC voltage, an inverter to generate an alternating current (AC) voltage by switching the DC voltage, a first heater driven by the AC voltage so as to heat a first cooking container, a second heater connected in parallel to the first heater, and driven by the AC voltage so as to heat a second cooking container, and a switching controller configured to output a switching signal to the inverter for controlling the first and second heaters in accordance with a selected operation mode. The selected operation mode may be a first operation mode for driving only the first heater, a second operation mode for driving only the second heater, or a third operation mode for driving both the first and second heaters at the same time.

Abstract: An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece, even a large workpiece, can be readily and approximately uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated H1, H2 are established on a workpiece W so as to extend in one direction and the areas to be heated H1, H2 are induction-heated, the deformation amount on one edge of the areas to be heated H1, H2 is different from that on the other. This induction heating device includes: heating coils 451 facing a portion of the areas to be heated H1, H2 when the workpiece W is induction-heated; and a relative transfer means for transferring the workpiece W and the heating coils 451 along one direction in a relative manner, and the heating coils 451 are disposed so as to correspond to the areas to be heated H1, H2 during the heating period.

Abstract: A current conducting melting vessel within which glass can be melted is provided. At least two induction heating coils are provided at selected locations proximate to the melting vessel. Power is selectively supplied to the coils to thereby selectively energize the coils so that the mutual induction of current in a non-energized heating coil adjacent to an energized heating coil is prevented via a switching element in power supply circuitry associated with the non-energized coil.

Abstract: An induction cooker comprises: first and second inverters [[(11a, 11b)]] 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 [[(4a, 4b)]]; first and second oscillation circuits [[(7a, 7b)]] 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.

Abstract: When the control unit makes both the first and second inverter circuits operational, the control unit controls the first and second inverter circuits by duty control such that an average heating output from the first inverter circuit reaches a predetermined first target heating output, and an average heating output from the second inverter circuit reaches a predetermined second target heating output. When the control unit makes one of the first and second inverter circuits operational in an automatic heating mode for automatic heating control according to a predetermined heating output sequence, the control unit inhibits the first and second inverter circuits from being controlled by the duty control.

Abstract: 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.

Abstract: 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.

Abstract: An induction hob having a plurality of induction heating elements; a control unit to operate the plurality of induction heating elements so as to heat at least one flexibly definable heating zone in a synchronized manner; and a measurement array to measure a heating power generated by the plurality of induction heating elements. The measurement array measures a sum of heating powers of at least two induction heating elements and the control unit uses the sum of heating powers to regulate the heating power generated by the plurality of induction heating elements.

Abstract: The purpose of the present invention is to minimize switching losses of an inverter. An induction heating device includes: a plurality of induction heating coils (20) which are disposed adjacent with each other; a plurality of inverters (30), each of which has a capacitor (40) serially connected to each of the induction heating coils (20), and converts a DC voltage into a square wave voltage; and a control circuit (15) which controls so as to align the phase of coil currents flowing though the plurality of the induction heating coils (20), wherein the control circuit (15) controls the timing at which the square wave voltage transitions such that an instantaneous value of the square wave voltage is preserved in either the DC voltage or a turnover voltage, when the coil current zero crosses.

Abstract: A cooking appliance. The cooking appliance includes a cook top for a kitchen. One side of the cook top includes a cooking area with cooking areas. The cooking areas may be operated via an induction cooker. The bottom side of the cooking appliance has a display. The display can provide useful information thereon such as the time. The cook top can be arranged in a first horizontal position for use of the cooking areas, and folded to a second vertical position during non use to display information on the display. The cooking appliance also includes a data reader, such as an RFID reader or bar code scanner to obtain data from a food product package. The data may include suggested recipes, cooking temperatures, and/or cooking times. The obtained data may be used to assist in controlling the operation of the cooking areas.

Abstract: An induction heating device includes a take-off roller, the take-off roller adapted to unwind a wound electrode plate having a coating portion and a non-coating portion, a guide roller adapted to feed the electrode plate, an induction heater above the guide roller, the induction heater being spaced a predetermined distance from the guide roller and the electrode plate, and a winding roller, the winding roller adapted to wind the electrode plate fed from the guide roller.

Abstract: There is provided an induction heating apparatus which continuously heats a steel plate using a solenoid system. The induction heating apparatus (1) includes: at least three heating coils (10A to 10D) disposed along a longitudinal direction of the steel plate to make the steel plate (2) pass through an inside thereof; and inductance adjusters (12A to 12D) disposed on electrical pathways (11) electrically connecting each of the heating coils and a power source applying a voltage to each of the heating coils and capable of generating self-induction and adjusting self-inductance in the self-induction, in which each of the inductance adjusters is disposed to cause a generation of mutual induction at least between the inductance adjusters mutually adjacent to one another.

Abstract: In an induction heater, preheated, pressurized air is further heated in the heating cabinet and also drawn into the coil tube via a suction fan. The simultaneous pulling and pushing of the twice-heated air through the tube provides superior air flow to pick up more moisture from the can ends being dried. The tube ends rest on upwardly concave collars and are held in place by gravity, with a single screw acting as a stop above to prevent upward movement. Removal requires only removing the single screw at each end then lifting the tube straight up out of the cabinet, which is facilitated by providing a hinged cover on the cabinet.

Abstract: An induction heating cooking device has an inverter including a resonant circuit, and a heating output control part. The resonant circuit has a resonant capacitor and a heating coil that is magnetically coupled to a load. The inverter has first and second switching elements. The heating output control part performs control by inverting the rate values of the driving periods of the first and second switching elements. The driving of the inverter is thus controlled so that substantially the same heating output is obtained to average the losses of the first and second switching elements.

Abstract: An induction hob having a plurality of induction heating elements; a control unit to operate the plurality of induction heating elements so as to heat at least one flexibly definable heating zone in a synchronized manner; and a measurement array to measure a heating power generated by the plurality of induction heating elements. The measurement array measures a sum of heating powers of at least two induction heating elements and the control unit uses the sum of heating powers to regulate the heating power generated by the plurality of induction heating elements.

Abstract: A heating circuit includes a first heating coil provided adjacent to an object to be heated. A first capacitor is provided in parallel to the first heating coil, the first capacitor being a resonant component. An inductor is coupled to the first heating coil and the first capacitor.

Abstract: An induction hob comprises an inductor support plate with an opening therein. The position and size of the opening are defined in such a way that the opening is equally spaced at its edges relative to at least three inductors to be fitted to the inductor support plate. A tray-like receptacle with a control mechanism and power electronics is fixed to the inductor support plate beneath the opening. The inductors are fixed to the other side of the inductor support plate and then electrically connected by connecting cables through this opening to the control mechanism and/or power electronics. Advantageously, the cable pass through the opening unimpeded.

Abstract: In an induction heater, preheated, pressurized air is further heated in the heating cabinet and also drawn into the coil tube via a suction fan. The simultaneous pulling and pushing of the twice-heated air through the tube provides superior air flow to pick up more moisture from the can ends being dried. The tube ends rest on upwardly concave collars and are held in place by gravity, with a single screw acting as a stop above to prevent upward movement. Removal requires only removing the single screw at each end then lifting the tube straight up out of the cabinet, which is facilitated by providing a hinged cover on the cabinet.

Abstract: A heating circuit for heating a conductive bowl includes a voltage source; a first heating coil provided between first and second nodes and being configured to heat the conductive bowl; a second heating coil provided between the second node and a third node and being configured to heat the conductive bowl; first capacitor and first switch provided in parallel between the first node and a fourth node; and second capacitor and second switch provided in parallel between the third node and the fourth node. The first and second heating coils define a circle-like shape having a center. The first and second heating coils are configured to be aligned to each other if one of the first and second heating coils is moved with respect to a line extending through the center of the circle-like shape.