Entries |
Document | Title | Date |
20080296291 | Warm Wave Generating System - A warm wave generating system includes a direct-current power supply, a frequency generator to output a variable signal wave at a predetermined frequency range, a transformer in which a primary coil through which a direct current outputted from the direct-current power supply can pass is opposed to a secondary coil through which the signal wave outputted from the frequency generator can pass, and a heating element connected to the direct-current power supply via the primary coil of the transformer. The direct current, which is modulated by the signal wave passing through the primary coil of the transformer and then through the secondary coil, is used to allow the heating element to generate heat. | 12-04-2008 |
20090084775 | INDUCTIVE HEATING APPARATUS AND METHOD - Apparatus and method for inductive heating wherein an internal inductive heating assembly is provided within a bore of a solid article. The heating assembly includes an interior coil inductively coupled to a portion of the article adjacent the bore to inductively heat the article. The heating assembly lacks an internal cooling mechanism and the coil thermally coupled to the adjacent article portion for transmission of heat from the coil to the article. A signal is provided to the coil to generate a magnetic flux for inductive heating of the adjacent article portion | 04-02-2009 |
20090101637 | SYSTEM AND METHOD FOR CONTROLLING MULTIPLE PROCESSES IN A WELDING-TYPE POWER SOURCE USING A REFINED CONTROLLER ARCHITECTURE - A system and method for operating an welding-based power source includes an welding-type power source includes a power conditioner configured to receive power from a power source and condition the power to have characteristics within a predefined set of thresholds and an inverter configured to receive the conditioned power from the power conditioner and convert the conditioned power to AC power. The welding-type power source also includes a rectifier configured to convert the AC power to DC welding-type power to drive a welding-type process and a processor segregated into at least two functional modules. The processor may be a field programmable gate array (FPGA) based processor. A first functional module is configured to control the power conditioner to condition the power to have characteristics within the predefined set of thresholds and a second functional module is configured to control the inverter to convert the conditioned power to AC power. | 04-23-2009 |
20090127253 | Temperature-controlled induction heating of polymeric materials - The present invention provides new polymer induction bonding technology. Induction heating technologies are utilized to weld, forge, bond or set polymer materials. The invention provides controlled-temperature induction heating of polymeric materials by mixing ferromagnetic particles in the polymer to be heated. Temperature control is obtained by selecting ferromagnetic particles with a specific Curie temperature. The ferromagnetic particles will heat up in an induction field, through hysteresis losses, until they reach their Curie temperature. At that point, heat generation through hysteresis loss ceases. This invention is applicable to bonding thermoplastic materials, wherein only the area to be heated has ferromagnetic particles in it; bonding of thermoset composites, which have been processed with a layer of thermoplastic material on one side; curing of thermoset adhesives or composite resins; or consolidating thermoplastic composites. | 05-21-2009 |
20090166353 | Controlled Electric Induction Heating of an Electrically Conductive Workpiece in a Solenoidal Coil with Flux Compensators - Apparatus and method are provided for inductively heating workpieces with varying characteristics in the same induction coil while selectively controlling the induced heat temperature distribution profile of each workpiece with one or more flux compensators inserted into the induction coil along with the workpiece to be inductively heated. | 07-02-2009 |
20090230123 | DEVICE AND METHOD FOR DRIVING THE INDUCTION HEATING MEANS OF AN INDUCTION HOB - A device for driving the induction heating coils of an induction hob, in which power is supplied to the induction heating coils via the electric power grid or a grid phase thereof, comprises a filter unit and a rectifier unit with at least one converter and intermediate circuit. For two induction heating coils, one rectifier unit and two converters are connected to one filter unit. For further induction heating coils, an additional converter is coupled downstream of one of the existing filter units. | 09-17-2009 |
20090236329 | INDUCTION HEATING SYSTEM FOR A MOTOR-DRIVEN VEHICLE - Disclosed is an induction heating system for a motor-driven vehicle (VC), which comprises a polyphase-type AC motor ( | 09-24-2009 |
20090289055 | INDUCTIVELY-HEATED APPLICATOR SYSTEM - An inductively-heated applicator system including a heating module and an applicator, such as an applicator pen. The heating module include a dock for seating the applicator. The heating module includes circuitry to selectively generate an electromagnetic field to wirelessly provide energy to the applicator when it is positioned in the dock. The heating module may also include temperature control circuitry to monitor and/or control the temperature of the applicator. The applicator pen includes a heating element that it heated through energy provided by the electromagnetic field. The heating element may be directly inductively heated by the electromagnetic field. The heating element may be a roller element that heats and applies the product. Alternatively, the applicator may include a secondary in which electrical power is induced when the electromagnetic field is present. In this alternative, the power may be applied to the heating element to produce resistive heat. | 11-26-2009 |
20100044367 | INDUCTION HEATING DEVICE - An induction heating device includes a main body, an induction coil provided in the main body and forming an electromagnetic field, and an induction coil driving circuit unit positioned in the main body to be physically and thermally separated from the induction coil. | 02-25-2010 |
20100059507 | APPARATUS FOR HEAT TREATING METALS AND HEAT TREATMENT METHOD - An apparatus for heat treating metals includes a container configured for receiving a metal therein for heat treatment, a first power supply configured for generating a first electric field and applying a first voltage U | 03-11-2010 |
20100181306 | METHOD FOR CONTROLLING RESONANT POWER CONVERTERS IN INDUCTION HEATING SYSTEMS, AND INDUCTION HEATING SYSTEM FOR CARRYING OUT SUCH METHOD - A method for controlling resonant power converters using power transistors, particularly for induction heating systems, comprises a step of assessing the occurrence of non-zero voltage switching or non-zero current switching and a step of adjusting the control accordingly, the assessment of the above occurrence being performed by monitoring at least one electrical parameter correlated to the resonant circuit. | 07-22-2010 |
20100219182 | APPARATUS AND METHOD FOR HEATING MATERIAL BY ADJUSTABLE MODE RF HEATING ANTENNA ARRAY - An apparatus for heating a material that is susceptible to RF heating by an RF antenna array. The apparatus includes a source of RF power connected to an antenna array having a plurality of loop antenna sections connected to each other by dipole antenna sections wherein the loop antenna sections and dipole antenna sections create a magnetic near field and an electric near field such that the ratio of magnetic field strength to electric field strength is approximately a predetermined value. Material is heated by the apparatus by placing the material in the near fields of the antenna array and creating magnetic near fields and electric near fields that approximate a ratio that is predetermined to efficiently heat the material and connecting the antenna array to an RF power source. | 09-02-2010 |
20100258555 | DIRECT CURRENT ELECTROMAGNETIC HEATING ELEMENT - A direct current electromagnetic heating element using the principle of electro-heat energy transferring via the DC electromagnetic field is disclosed. When the direct current is passing through a coil and fully charges a closed magnetic field, the magnetic field would form an extra 2D heating space from the DC line circuit. The magnetic medium in this 2D heating space would expel enormous heat energy. Comparing to the common AC heating devices, the heating device with the circuit via the DC electromagnetic field would save more than 40% electric power consumption. | 10-14-2010 |
20100288754 | ELECTRIC POWER SUPPLY APPARATUS - A feeder capable of feeding power to a load such as an electric appliance without remodeling an IH cooker already owned at home and usually used for cooking by heat, and just by putting on a plate of the IH cooker with its power ON without the need of an outlet. The feeder ( | 11-18-2010 |
20100301038 | Induction Heat Treatment of Workpieces - An apparatus and process are provided for induction heating of a workpiece. The workpiece is moved through an inductor to inductively heat treat the workpiece with electric power of varying frequency and duty cycle or amplitude control to control the magnitude of electric power as the frequency changes. Alternatively the workpiece may be stationary and the inductor can be moved along the workpiece, or combined and coordinated movement of both the workpiece and inductor can be used. | 12-02-2010 |
20100320196 | INDUCTION HEATING APPARATUS - An induction heating apparatus includes a current supply unit configured to supply a high-frequency current to a coil for inductively heating a conductive heating element based on a direct current obtained by rectifying AC power supplied from an AC power supply, a driving unit configured to output a drive pulse for supplying the high-frequency current from the current supply unit, a control unit configured to control a frequency of a drive pulse output by the driving unit, and a power limiting unit configured to limit an operation of the driving unit when input power determined based on an input voltage of the AC power supply and an input current to the current supply unit exceeds a predetermined value. | 12-23-2010 |
20100326984 | INDUCTION HEATING APPARATUS AND INDUCTION HEATING METHOD - There is provided an induction heating apparatus which continuously heats a steel plate using a solenoid system. The induction heating apparatus ( | 12-30-2010 |
20110036831 | Electric Induction Heat Treatment of Electrically Conductive Thin Strip Material - Apparatus and method are provided for electric induction heat treatment of electrically conductive thin strip material. Multiple series-connected coil loops, each having a pole pair, are provided in each of a top and bottom induction coil, which are positioned mirror image to each other. The top and bottom induction coils form a transverse flux induction heat treatment apparatus. A separate flux concentrator is provided over and on the side of each pole. The thin strip material passes between the poles of the top and bottom induction coils and the flux concentrators associated with each of the poles. | 02-17-2011 |
20110036832 | METHOD AND METHOD AND ARRANGEMENT FOR DYNAMIC WAVE FORM CORRECTION FOR DYNAMIC WAVE FORM CORRECTION - The invention relates to a method for dynamic wave form correction of a power supply of an induction heating device ( | 02-17-2011 |
20110073590 | Inductor and use of such an inductor - An inductor is provided for the simultaneous inductive heating of two tracks or ways which are formed next to one another on a metallic workpiece, having a first segment which is associated with the first track or way and a second segment which is associated with the second track or way, and having two supply arms via which the segments can be connected to a power supply. To enable two tracks or ways to be heated simultaneously to the hardening temperature without heating the material portion situated between the tracks or ways the segments of the inductor and the supply arms are connected together in an inductor in such a way that the fields travelling at right angles to the longitudinal extent of the tracks or ways neutralize each other in the region of the material portion which separates the tracks or ways from one another. | 03-31-2011 |
20110084063 | ARRANGEMENT AND METHOD FOR POWERING INDUCTORS FOR INDUCTION HARDENING - An arrangement for induction hardening a part including a pair of separate inductors electrically isolated from each other and configured to substantially surround a part when brought into close juxtaposition with each other. The inductor sections are powered by respective secondary inductor loops brought into close juxtaposition with a primary inductor loop connected to an ac power source which induces an ac current in each inductor section. | 04-14-2011 |
20110127256 | METHOD AND CIRCUIT FOR AUTOMATIC CALIBRATION OF THE POWER OF ELECTROMAGNETIC OVEN - A method for automatic calibration of the power of electromagnetic oven includes the following steps: 1) selecting two current test values within a range of working current of the electromagnetic oven, making it operate in the case of the current test values and zero, detecting voltage values of current signals under the three operation states; calculating, by a CPU, a coefficient k and an intercept b according to a formula y | 06-02-2011 |
20110132901 | TRANSVERSE-MOVING MAGNET MAGNETIC HEATER - A transverse-moving magnet magnetic heater is provided having a conductor assembly and a magnet assembly. The conductor assembly is operable to rotate relative to the magnet assembly about an axis so as to induce eddy currents in the conductor assembly when relative motion is produced between the conductor assembly and magnet assembly. The magnet assembly is operable to translate transversely into and out of magnetic engagement with the conductor assembly. The conductor assembly defines a fluid path therethrough operable to drive a working fluid therethrough and for the transfer of heat from the conductor assembly to the working fluid. The magnetic heater may be a component of a heat generation system comprising an internal combustion engine having a drive shaft for rotating the conductor assembly. The heat generated by the magnetic heater, as well as the heat generated by the engine from the engine exhaust and engine cooling system, is combined to heat a working fluid. | 06-09-2011 |
20110139770 | Method of Crosstalk Reduction for Multi-zone Induction Heating Systems - Reduction of crosstalk between induction heating coils in an induction heating apparatus and particularly to reduction of crosstalk in a multi-zone induction heating system provides greater reliability for the power modules. | 06-16-2011 |
20110163088 | TOKEN COMPRISING IMPROVED PHYSICAL UNCLONABLE FUNCTION - The invention relates to a token, to an integrated circuit comprising the token, to a method of randomizing the token and a system for randomizing the token. The token comprises a physical unclonable function and comprising probing means for probing the physical unclonable function. The physical unclonable function comprises a capacitor comprising a dielectric medium being arranged at least partially between the electrodes of the capacitor. The dielectric medium is configured for contributing to a capacitance value of the capacitor and comprises conducting particles substantially randomly dispersed in the dielectric medium. The conducting particles comprise a phase changeable material being changeable between a first structural state having a first conductivity and a second structural state having a second conductivity different from the first conductivity. | 07-07-2011 |
20110168696 | Computer With Electric Heating Unit - The present invention discloses a computer with an electric heating unit, wherein the casing of a computer unit is integrated with an electric heating unit. The electric heating unit has an electric heating plane on the casing. The electric heating plane heats a heatable article placed on the casing. A support device is arranged on the casing to hold a heatable article preventing the heatable article from being accidentally knocked over. | 07-14-2011 |
20110168697 | ELECTRIC POWER CONVERTING APPARATUS AND INDUCTION HEATING APPARATUS - To aim to reduce ripple current flowing through a capacitor in a power converter apparatus including a converter, the capacitor and an inverter. A current sensor | 07-14-2011 |
20110220639 | Wireless inductive coupling assembly for a heated glass panel - A wireless inductive coupling assembly for a heated glass panel assembly is provided that includes a metal oxide coated glass panel with a panel frame, an opening frame that cooperates with the coated glass panel frame to allow the panel to cover a panel opening, a receiving coil that is positioned in the panel frame and that is wired to the panel, and a sending coil that is positioned in the opening frame and that is wired to an electrical power source. When the electrical power source supplies electrical power to the sending coil, the sending coil wirelessly induces an electrical current in the receiving coil, which causes the dielectric panel to provide heat. | 09-15-2011 |
20110226758 | ELECTROMAGNETIC OVEN CIRCUIT BASED ON SOC CHIP - An electromagnetic oven circuit based on SoC chip includes a power inversion circuit and a CHK-S008 type SoC chip. A CPU, comparators, an operational amplifier, an A/D converter, and an IGBT drive control module are integrated into this chip. The circuit further includes a feedback excitation IGBT driver including the IGBT drive control module, the comparator, an external driver, and an external feedback circuit connected between the output of the IGBT drive control module and the in-phase input terminal of the comparator, the output of the comparator is connected to the feedback terminal of the IGBT drive control module, the external driver is connected between the output of the drive control module and the input of the power inversion circuit for driving the power inversion circuit to work. The external feedback circuit feeds back the pulse signal into the chip to modify the IGBT drive waveform and optimize the pulse signal waveform, which improves the work efficiency; at the same time, an excitation effect may be generated in the case of a weak synchronization signal by the external feedback circuit, preventing the synchronization signal from failing when the commercial power is low. | 09-22-2011 |
20110259880 | MECHANICAL SCRAPER SYSTEM WITH SYNCHRONIZED PULSE ELECTROTHERMAL DEICING - A mechanical scraper with synchronized pulse electrothermal deicing includes a heating element that is coupled to a power supply and that is operable to convert power from the power supply into heating energy. A controller controls the magnitude and duration in which power is applied to the heating element, such that only an interfacial layer of ice at an ice-object interface is disrupted for a sufficient period of time to allow the scraper to move or remove the dislodged ice/snow. A scraper then works over the surface to be deiced, thus removing the ice before the interfacial layer re-freezes. Another method of the present invention electromagnetically induces current at the ice-to-object interface, to melt interfacial ice, using coils and a high frequency power supply disposed proximal to the scraper. | 10-27-2011 |
20110284527 | AUXILIARY WELDING HEATING SYSTEM - An auxiliary welding heating system includes an induction heating coil disposed adjacent to a welding torch or plasma cutter. The auxiliary welding heating system further includes an induction power supply configured to generate an alternating current and a step-down transformer coupled to the induction power supply. The induction heating coil is coupled to the step-down transformer and is configured to receive the alternating current and induce eddy currents in a welding work piece to heat the welding work piece before an advancing welding arc or plasma cut to a homologous temperature of at least approximately 0.5. | 11-24-2011 |
20110297668 | INDUCTIVE HEATER HUMIDIFIER - An inductive heater humidifier for heating fluids is provided by the present disclosure. The humidifier includes a reservoir having a ferromagnetic bottom plate. The reservoir is disposed on top of a non-metallic cover plate, which rests on a topless ferrite base. The ferrite base includes induction coil for generating heat. The induction coil is energized to produce eddy currents that generate heat, which is convectively transferred to the reservoir via the bottom plate to heat fluid in the reservoir. | 12-08-2011 |
20110303655 | WELDING EQUIPMENT FOR METALLIC MATERIALS AND METHOD FOR WELDING METALLIC MATERIALS - A welding equipment for metallic materials capable of performing heat treatment such as tempering based on partial heating in spot welding is provided. The welding equipment | 12-15-2011 |
20110315677 | METHOD DEVICE AND ARRANGEMENT FOR HEATING AN OBJECT BY AN INDUCTION - A device for heating an object by an electromagnetic induction comprises at least one rotor, and the rotor comprises at least one permanent magnet. The device also comprises a stator for providing varying magnetic field arranged to interact with at least one magnet of the rotor and causing said rotor to rotate around the axis. The magnets of said rotor is arranged to provide varying magnetic field and eddy currents within the object when said rotor is rotated so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents. | 12-29-2011 |
20120024842 | CIRCUIT ARRANGEMENT FOR AN INDUCTION COOKER, METHOD FOR OPERATING THE CIRCUIT ARRANGEMENT AND INDUCTION COOKER - A circuit arrangement for an induction cooking device and an induction cooking device with a circuit of this kind, wherein the circuit includes a resonant circuit with at least one induction coil for the inductive heating of an induction cooking dish and at least one capacitor, as well as a variable circuit element for the variation of the inductivity and/or the capacity of the resonant circuit. The variable circuit element in preference is a choke controllable with direct current and the switching circuit in preference is operated with a constant frequency. | 02-02-2012 |
20120103975 | RADIO-FREQUENCY HEATING APPARATUS AND RADIO-FREQUENCY HEATING METHOD - A radio-frequency heating apparatus of the present invention includes: a phase varying unit ( | 05-03-2012 |
20120118878 | INDUCTION HEATING DEVICE FOR FUEL CELL SYSTEM - The present invention provides an induction heating device for a fuel cell system, which can rapidly heat coolant during cold start-up, control the power consumption depending on the voltage of a fuel cell stack, and ensure the insulation resistance by separating a heating unit, which is in contact with the coolant, from the outside. That is, the present invention provides an induction heating device for a fuel cell system, in which an insulating housing is provided in a coolant circulation line, a heater for heating coolant is provided in the housing, and a high frequency controller for controlling the power consumption of the heater is provided at the outside of the housing such that the coolant can be rapidly heated during cold start-up, precisely control the power consumption depending of the voltage of a fuel cell stack, and improve the insulation performance by separating the heater as a heating unit, which is in contact with the coolant, and the high frequency controller and a coil as a power unit with respect to the insulating housing. | 05-17-2012 |
20120199578 | METHOD FOR ADJUSTING A HEATING POWER OUTPUT OF AN INDUCTION HEATING APPLIANCE AND CORRESPONDING INDUCTION HEATING APPLIANCE - An induction heating device having an adjustable heating power output includes at least one resonant circuit, which includes an induction heating coil, and a heating power adjusting device, which is designed to vary a resonant frequency of the resonant circuit in order to adjust the heating power output. | 08-09-2012 |
20120234825 | ELECTRIC HEATING APPLIANCE WITH AC-LINE FILTER WITH LOW LEAKAGE CURRENT - Provided is a power supply apparatus, and an appliance including the power supply apparatus, which includes a filter that attenuates a noise component being transmitted toward a source that supplies an AC electric current. The filter lacks a capacitor establishing a conductive path for conducting a high-frequency alternating signal, a leakage current, or both to a ground electrode. A rectifier is also included, and is disposed electrically between the filter and a load that is to be energized by operation of the power supply circuit. The rectifier converts the AC electric current into a rectified signal. The power supply apparatus also includes a grounding capacitor that establishes a capacitive, conductive path between an output of the rectifier and a ground electrode that is to be electrically connected to earth ground. The grounding capacitor is electrically separated from the filter by the rectifier, and extends electrically between the ground conductor and at least one of: (i) a positive DC bus conductor from the rectifier, and (ii) a DC bus return to the rectifier. | 09-20-2012 |
20120241442 | INDUCTION HEATING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - An induction heating device comprises: a resonant circuit provided with a coil heating a workpiece inductively and a capacitor, the coil and the capacitor being coupled in parallel with each other; a switching element coupled in series with the resonant circuit; a power supply which applies to the resonant circuit, a direct-current input voltage whose instantaneous value can be changed with the lapse of time; and a power controller which controls power to the workpiece by turning the switching element ON at a certain time and changing an ON period of the switching element, and the power controller is characterized by turning the switching element ON with a delay of an integral multiple of a resonant period of the resonant circuit if a value of power to the workpiece is equal to or lower than a first threshold which is predetermined. | 09-27-2012 |
20120248098 | CONTROL METHOD OF INDUCTION HEATING COOKER - Disclosed herein is a control method of an induction heating cooker including detecting at least one heating coil occupied by a first container from among a plurality of heating coils, switching a plurality of inverter units so that a power level input by a user is applied to the detected at least one heating coil, determining, if the at least one heating coil occupied by the first container includes plural heating coils, whether or not output currents within a target output current range corresponding to the power level are present from among the output currents of the respective heating coils sensed by sensing units, and equally adjusting duty ratios of pulse width modulation signals applied to the inverter units of the respective heating coils until at least one of the output currents reaches the target output current range, if no output current within the target output current range is present. | 10-04-2012 |
20120267359 | SYNCHRONOUS FULL-BRIDGE OSCILLATOR - 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 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. | 10-25-2012 |
20120285948 | 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. | 11-15-2012 |
20120305546 | INDUCTION COOKTOP PAN SENSING - An induction heating system includes a heating coil operable to inductively heat a load with a magnetic field, a variable high frequency power source supplying a high frequency current to the heating coil, a detector for detecting a current through the coil and providing a current signal representative of the current, a controller for controlling the frequency of the current to the heating coil and responsive to the current signal from the detector to capture and analyze a current signature, the controller being operative to sweep a current operating frequency across an operating frequency spectrum, and to combine a sum of the current signature with a two-sample swing of the current signature, and determine a presence of a load on the heating coil and control the frequency of the current to the coil based on a signal resulting from the combined signal. | 12-06-2012 |
20120305547 | CONTROL UNIT OF INDUCTION HEATING UNIT, INDUCTION HEATING SYSTEM, AND METHOD OF CONTROLLING INDUCTION HEATING UNIT - A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit. | 12-06-2012 |
20130015178 | HIGH FREQUENCY ELECTROMAGNETIC INDUCTION HEATING DEVICE AND METHOD FOR USING THE SAME TO HEAT SURFACE OF MOLDAANM LIN; Shu-ChenAACI Taoyuan CountyAACO TWAAGP LIN; Shu-Chen Taoyuan County TW - A high frequency electromagnetic induction heating device includes a power supply, a high frequency electromagnetic induction coil and an electromagnetic guide sleeve. The high frequency electromagnetic induction coil has two electrodes which are electrically connected with the power supply. The electromagnetic guide sleeve is disposed around the high frequency electromagnetic induction coil, and has an opening exposing the high frequency electromagnetic induction coil, wherein the opening faces towards a surface to be heated. | 01-17-2013 |
20130075388 | Method for Heating a Liquid in a Cooking Vessel and Induction Heating Device - A method for heating a liquid in a cooking vessel is provided. According to various aspects, an induction heating device includes a resonant circuit having an induction heating coil. A parameter value of the resonant circuit may be determined, depending on a temperature of the cooking vessel. A radio-frequency square-wave voltage may be applied at a predefined heating power setpoint value to the resonant circuit to supply heating power to the cooking vessel. The time profile of the parameter value may be evaluated for determining the boiling point of the liquid. After the boiling point has been determined, the heating power setpoint value may be reduced by a predefined amount over a predefined time period after which a current parameter value may be determined and stored. The parameter value may be adjusted to a setpoint value which is dependent on the stored parameter value. | 03-28-2013 |
20130112683 | 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. | 05-09-2013 |
20130119052 | 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. | 05-16-2013 |
20130200070 | 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. | 08-08-2013 |
20130220996 | INDUCTION HEATER SYSTEM FOR ELECTRICALLY HEATED PIPELINES - An induction heater system, comprising an induction heating coil, wherein said induction heating coil has a first end and a second end, and a circumference; a power source electrically connected to said first end and said second end; an electrical connection through said induction heating coil and between said first end and said second end and said power source; and a gap located along said circumference of said induction heating coil, wherein said gap extends substantially longitudinally along the induction heating coil and divides said circumference of said induction heating coil into a first section and a second section. | 08-29-2013 |
20140158679 | COOKER, POWER CONTROL METHOD OF THE COOKER, AND POWER CONTROL SYSTEM HAVING THE SAME - A cooker, a method for controlling power of a cooker, and a power control system including the same are provided. A high power cooking device can be used without making an additional power construction work or causing a power circuit breaker installed in an input terminal of a household power source to be opened. Driving power of a burner is controlled or distributed by using a current flowing in a power circuit breaker or an overcurrent breaker installed in a load end, whereby power operation efficiency of an input power source can be enhanced and the input power source cannot be broken. | 06-12-2014 |
20140217091 | WIRELESS HEAT GENERATION DEVICE AND WIRELESS HEAT GENERATION SYSTEM - A wireless heat generation device includes an antenna, a controller, a heating element, and a temperature sensor. The antenna is used for receiving a radio wave and converting the radio wave into electric energy. The controller is used for receiving the electric energy and providing an electric power to the heating element. After the electric power is received by the heating element, the electric power is converted into heat. The temperature sensor is used for sensing a temperature within the wireless heat generation device. If the temperature reaches a preset temperature, the controller stops providing the electric power to the heating element. Consequently, the possibility of causing an overheating problem of the wireless heat generation device will be eliminated. | 08-07-2014 |
20140231415 | Induction Heating Head - An induction heating system includes a power source and an induction head. The converter output is at a voltage that is not greater than the voltage applied to the coil. The induction head includes a housing that houses a conductive coil disposed to induce heat in a workpiece and the coil is wound to be tuned to the output power. The coil is wound in a stacked spiral pattern with at least two turns in each layer. A flux concentrator is disposed about the coil with a potting compound around the concentrator and coil. Spacers maintain a desired separation between the head and the workpiece. The coil is a tube carrying a coolant. The head includes a wear surface that prevents contact of the coil and the workpiece, and a thermal insulator between the coil and wear surface. A non-contact temperature sensor is mounted to the housing. | 08-21-2014 |
20140263288 | MAGNETIC INDUCTION FEEDBACK MECHANISM FOR A HEATING SYSTEM AND THE METHOD USING THE SAME - A heating system for heating a magnetic inducible container is disclosed, wherein the heating system includes a frequency detector for detecting the frequency of the current through an inductor coil and a control unit coupled to the frequency detector to adjust the heat generated by the heating system according to the variation of the frequencies detected by the frequency detector. | 09-18-2014 |
20140284323 | WIRELESS SYSTEM FOR MONITORING THEFT OF WELDING-TYPE DEVICES - A welding-type device has wireless communications to transmit wireless signals comprising at least identification information. The information may be transmitted either automatically or in response to request signals. Such a welding-type device may be configured to communicate with other welding-type devices, a monitoring device, or both. A wireless communication system has at least one welding-type device, at least one wireless communication assembly, and at least one monitoring device and is capable of assisting a user in preventing theft of welding-type devices. | 09-25-2014 |
20150028024 | MULTI-STAGE COMPRESSOR IN A PLASMA CUTTER - Systems and methods are provided for a torch power system using a multi-stage compressor. In one embodiment, a system includes a torch power unit that includes a compressor having multiple compression stages. A method of operation is provided that includes compressing a gas via a multi-stage compressor in a torch power unit. A method of manufacturing a torch power unit is provided that includes providing a multi-stage compressor for a torch power unit and mounting the multi-stage compressor inside an enclosure of the torch power unit. Another system is provided that includes a plasma cutting circuit, a multi-stage compressor, a motor coupled to the compressor, and a compressor controller. | 01-29-2015 |
20150060439 | DEVICE FOR INDUCTIVELY HEATING A HEATING ELEMENT - A device and method is provided for inductively heating a heating element, particularly via a magnetic field generated by an induction coil, having an induction coil connected to a resonant circuit, whereby the resonant circuit has at least one first capacitor and at least one first current source, and the coil has a specific inductance and a resistance, and the material of the heating element has a constant permeability at least in temperature subranges, and a method for determining a temperature of a heating element. | 03-05-2015 |
20150076139 | Stand-Up Membrane Roofing Induction Heating Tool - A portable induction heating tool is provided as a membrane roofing tool for use in sealing anchor plates with a heat-activated adhesive to a membrane roofing member. The tool uses two different audible tones so two tools can be used simultaneously on a single roof, while allowing a user to easily distinguish between the operation of both tools. The main housing containing electronics is weather-tight, and requires no forced-cooling devices. The controller automatically performs data logging functions, such as counting the number of anchor plates per job or per day that have been properly placed, counting the number of activation events for a tool's life, tracking the number of faults which occur as the tool is being used, and the controller can identify the type of fault that occurs during operation of the tool. The controller also stores energy setting changes in memory. | 03-19-2015 |
20150114954 | PORTABLE INDUCTION HEATER - A portable, handheld induction heater capable of attachment to differently-sized work coils, including a self-resonating oscillator that automatically tunes to the work coil to maintain resonance, a tank circuit for circulating current through the work coil in order to induce a magnetic field in the material to be heated by the induction heater, and a near-zero detector circuit functioning to keep the oscillator operating at a frequency of resonance for the tank circuit. | 04-30-2015 |
20150144618 | HALF BRIDGE INDUCTION HEATING GENERATOR AND A CAPACITOR ASSEMBLY FOR A HALF BRIDGE INDUCTION HEATING GENERATOR - The present invention relates to a half bridge induction heating generator, comprising at least one power terminal ( | 05-28-2015 |
20150327335 | INDUCTION HEATING COIL AND METHOD FOR MANUFACTURING INDUCTION HEATING COIL - An induction heating coil includes a coil section configured to heat a treatment target by induction, a power supply section configured to supply power to the coil section, and a cooling medium passage that is arranged in the power supply section and the coil section, and is configured to supply a cooling medium to the coil section. The coil section, the power supply section, and the cooling medium passage are formed using a metal additive fabrication method. | 11-12-2015 |
20160073451 | Induction Cooking Appliance - A system for operation of an induction stove includes an AC to DC voltage converter receiving AC voltage from a power input, a voltage sensing unit coupled to the converter and comprising an optocoupler, and a processor coupled to the sensing unit for receiving voltage information from the unit and controlling at least one of input voltage, input current, and oscillation frequency of a heating coil of the induction stove. A method for operating an induction stove includes converting an AC voltage from a power input to a DC voltage, supplying the DC voltage to a voltage sensing unit coupled to the converter and comprising an optocoupler, transmitting a voltage measurement from the sensing unit to a processor, and controlling at least one of an input voltage and oscillation frequency to a heating coil of the induction stove via the processor based at least in part on the voltage measurement. | 03-10-2016 |
20160100458 | CONTROL UNIT OF INDUCTION HEATING UNIT, INDUCTION HEATING SYSTEM, AND METHOD OF CONTROLLING INDUCTION HEATING UNIT - A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit. | 04-07-2016 |
20160100459 | CONTROL UNIT OF INDUCTION HEATING UNIT, INDUCTION HEATING SYSTEM, AND METHOD OF CONTROLLING INDUCTION HEATING UNIT - A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit. | 04-07-2016 |
20160113068 | RADIO FREQUENCY HEATING APPARATUS USING DIRECT-DIGITAL RADIO FREQUENCY POWER CONTROL AND FINE-TUNE POWER CONTROL - A radio frequency inductive heating apparatus includes a control device, a plurality of radio frequency devices, a plurality of transformers, a resonant tank circuit, a heating element, a first power supply, and a second power supply. The radio frequency devices are selectively activated by the control device, and each of the plurality of radio frequency devices is coupled to the primary winding of one of the plurality of transformers. The secondary winding of each of the plurality of transformers is coupled to the resonant tank circuit, and the heating element is coupled to the resonant tank circuit. The plurality of radio frequency devices includes a first radio frequency device and a second radio frequency device. The first radio frequency device is coupled to the first power supply, and the second radio frequency device is operatively coupled to the second power supply. A corresponding method is also disclosed. | 04-21-2016 |