Abstract: Induction heating power supplies, data collection systems, and induction heating systems to communicate over an induction heating cable are disclosed. An example induction heating power supply includes a power conversion circuit configured to: convert input power into induction heating power and transmit the induction heating power via an induction heating cable, and at least one of a receiver circuit coupled to the induction heating cable and configured to receive data via the induction heating cable or a transmitter circuit coupled to the induction heating cable and configured to transmit data via the induction heating cable.

Abstract: Plural induction heating coils for inductively heating to-be-heated object are provided under a top plate on which to-be-heated object is placed, and plural inverter circuits for supplying high-frequency currents to the plural induction heating coils, respectively, are adapted to be cooled by cooling air flows from cooling portions, and placed in a longitudinal row along the cooling air flows, in air-flow blowing path spaces through which cooling air flows from the cooling portions are blown, so as to facilitate cooling designing for an induction heating device and to improve the cooling performance of the induction heating device.

Abstract: A solenoidal induction coil with dynamically variable coil geometry is provided for inductively welding or heating continuous or discontinuous workpieces passing through the solenoidal induction coil in a process line. The coil geometry can change, for example, as the outer dimension of the workpiece passing through the solenoidal induction coil changes or as non-continuous workpieces pass through the solenoidal induction coil in an induction heating or welding process line.

Abstract: An induction cook top may include a heat management system. The heat management system controls heat produced both internally by the electronic components within the cook top as well as heat produced above the cook top when cooking. The heat management system provides improved air flow past and around the internal electronic components. The cook top features an efficient removal of generated heat and may optionally provide a vented housing and direct airflow into and out of the housing or provide a thermoelectric cooling device which permits a ventless housing.

Abstract: A permanent magnet thermal generator having a rotating chamber with an attached optionally rotational heat element in close proximity to one or more permanent magnets. The relative motion of the heat element to the magnetic flux from the magnets results in heat generation and in some cases in levitation. Clothe driers, air furnaces, water heaters and other systems incorporating a permanent magnet thermal generator are also set forth.

Abstract: An induction heating cooking apparatus includes a magnetic flux-shielding plate 28 to restrain magnetic flux leakage from a heating coil 24 and define a cooling air trunk 33, through which cooling air from a fan 32 passes. An infrared sensor 26 for detecting infrared rays emitted from a cooking container 22 and a control circuit 27 for controlling an output of a heating coil 24 depending on an output from the infrared sensor 26 are accommodated within the same space with respect to the magnetic flux-shielding plate 28 to thereby enhance assemblage. Also, the infrared sensor 26 is mainly cooled by cooling air passing through a cooling air trunk 33 to thereby enhance the cooling efficiency of the infrared sensor 26 and conduct correct temperature detection.

Abstract: A method and device for heating or hardening at least an axial segment of a rotationally-symmetric surface of a work piece includes rotating the work piece about its rotational axis and moving a peripheral portion of an inductor along a longitudinal profile of the axial segment of the rotating work piece with a constant spacing between the peripheral portion and the axial segment. At least a portion of the movement of the peripheral portion is composed of a first vector component in the direction of the rotational axis and a second component extending perpendicularly to the first vector component. The peripheral portion has a length in the rotational axis direction that is less the length of the axial segment in the rotational axis direction.

Abstract: 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.

Abstract: The present invention is apparatus for, and method of, purification of silicon by electric induction heating and melting of silicon in a crucible or susceptor vessel, with subsequent directional partial cooling of the silicon melt to an initial amorphous-to-crystalline (solidification) temperature to produce a directionally solidified purified quantity of silicon and a separate quantity of high impurity silicon. The quantity of high impurity silicon is removed from the vessel and the purified quantity of silicon at solidification temperature is remelted in the vessel for removal from the vessel or further processing.

Abstract: An electrical apparatus includes a casing, a circuit board, a top cover and an active heat-dissipating element. The casing includes a first entrance, a first receptacle, a first sidewall, and a first bottom surface. An air inlet hole is formed in the first bottom surface. A concave region is defined at a junction between the first sidewall and the first bottom surface. An air outlet hole is formed in the concave region. The circuit board is disposed within the first receptacle and has at least one electronic component mounted thereon. The top cover shelters the first entrance. The active heat-dissipating element is disposed within the first receptacle and arranged over the air inlet hole. Ambient air is inhaled into the first receptacle by the active heat-dissipating element and exhausted out of the casing through the air outlet hole, thereby removing heat generated from the electronic component.

Abstract: An induction heating workcoil has a ferrite core on which are wound multiple layers of an electrically conductive material. To cool the winding, solid thermal conductors are inserted between the multiple layers of the winding to provide a thermal interface with the multiple layers. The workcoil can also have a hollow tube that is wound on the outside of the winding with the tube having a liquid circulating through it to cool the winding. The core can have a cross-shaped top and an I-shaped leg with the multiple layers of the winding wound on the leg of the core. The solid thermal conductors can extend above the height of the windings so that the heat to be dissipated is transferred to the upper portion of the workcoil. The multiple layers of the winding are tightly wound on the solid thermal conductors to maximize the thermal interface.

Abstract: A heating device for heating a hollow component may include at least one inner induction coil and at least one outer induction coil, each configured to be heated. At least one element may be configured to influence a magnetic field formed between the inner and the outer induction coil during the operation of the heating device. The element may be arranged between the inner and the outer induction coils. Regions of the hollow component may be thinner and the thinner regions may be configured to heat more quickly than the remaining thicker regions. The thinner and thicker regions of the component may allow even heating of the component to be achieved.

Abstract: An induction heating apparatus that can operate at current frequencies of greater than 60 Hz and at least 1 kW. The induction heating apparatus includes a high frequency power supply, a superconductive induction coil, and a fluid cooling system. A fluid cooling system is designed to cause a cooling fluid to flow at least partially about and/or through the superconductive induction coil.

Abstract: A method and a device for the continuous production of glass and glass ceramic products from a glass melt is provided, which simplifies the changing between two kinds of glass. The device includes a melting crucible and an induction coil, which preferably extends around the melting crucible in order to heat a glass melt by means of an induction field generated by the induction coil. The wall elements, which form the side wall of the crucible, have cooling channels, through which a cooling fluid can be conducted, so that the glass melt solidifies on the side wall and forms a skull layer. The interior side of the wall elements is formed at least in part by an aluminum nitride-containing ceramic.

Abstract: A heating coil includes a pair of linear lead portions adapted to be connected to a power supply, and a ring-shaped or coil-shaped head portion having end portions connected to the lead portions respectively. A flow path through which a cooling medium flows is formed inside the lead portions and the head portion. An outer circumferential surface of the head portion has a circular or elliptical cross section and is configured to face a heating target portion of an inner circumferential surface of a work extending, the heating target portion extending in a circumferential direction of the work. Each of the lead portions has a straight side portion in a plane intersecting a longitudinal direction of the lead portions, the straight side portions of the lead portions being arranged in proximity to each other.

Abstract: Provided is an induction heater which induces an electric current in a metal utensil (e.g., a cooking utensil) using an electromagnetic force and can thus heat the metal utensil, and more particularly, an induction heater which can prevent electric devices sensitive to temperature from being overheated by forcefully blowing air to the front and the rear of an inverter circuit board. The induction heater is easy to be miniaturized, and a considerable number of devices can be integrated into the induction heater.

Abstract: An apparatus includes one or more magnetic cores collectively having an inner leg located between two outer legs. The legs are coupled to one or more connecting portions. The apparatus also includes one or more conductive coils wound around the inner leg. The one or more magnetic cores and the one or more conductive coils are configured to generate substantially balanced magnetic fluxes when the conductive coil is energized. Also, the one or more magnetic cores and the one or more conductive coils are configured so that heat created by currents induced in the roll by the magnetic fluxes produces a steady state thermal profile on a surface of the roll. The steady state thermal profile has one peak that falls within a control zone associated with the roll. The one or more magnetic cores could include a single magnetic core or multiple magnetic cores.

Abstract: An inductive heating device is structured such that a coil base (5) and ferrites (6) placed under a heating coil (4) in the vertical direction are flushed with each other at their lower surfaces and are directly placed on a heat dissipation plate (12A). A heat conductive member (8) is charged between the ferrites (6) and an electrical insulating member (9) sandwiched between the heating coil (4) and the ferrites (6), at least at a portion thereof, so that thickness variations in the ferrites (6) are absorbed thereby, which realizes a state where they are thermally coupled to each other from the heating coil (4) to the heat dissipation plate (12A).

Abstract: A method and apparatus for heating a workpiece. An induction heating system is used to induce magnetic fields in a workpiece to inductively heat the workpiece. The induction heating system may comprise a portable power source, a portable power source controller, a fluid-cooled induction heating cable, and a portable cooling unit. The induction heating system may be used to perform a variety of induction heating operations, including: annealing, surface hardening, heat treating, stress-relieving, curing, shrink-fitting, etc.

Abstract: Various mold apparatuses and methods for forming a polymer with induction heat energy are provided. In one embodiment of the present invention, a mold apparatus for forming polymer includes a mold having a top mold portion and a top mold surface that is magnetic. The bottom mold portion of the mold includes an induction heating unit that is at least partially embedded in the bottom mold portion that provides induction heat energy to the mold. The mold apparatus is constructed and arranged to dissipate greater than about 50% of the induction heat energy in the top mold portion. The induction heating unit of the bottom portion of the mold provides rapid heating to the top mold surface to provide high surface quality polymer parts and a shorter molding cycle time while utilizing less energy.

Abstract: A cooking appliance includes at least one heating element; a heat sink connected to the heating element, to radiate heat generated by the heating element; a cooling fan located at one side of the heat sink, to blow cooling air to the heat sink; and a flow guide covering at least a portion of the heat sink and guiding a portion of the cooling air to flow to the heating element.

Abstract: Waste heat of a high temperature inside a main body is designed to be discharged to the outside of the main body by means of a discharge fan through a first suction air flow passage and a first discharge air flow passage. Also, through a second air flow passage communicating from a second discharge fan suction port to a discharge fan suction portion, air from the outside of the main body or air at a site of the main body, where the temperature is low, is sucked by a discharge fan so that the air of a low temperature can pass outside the drive motor to cool the latter. With this construction, the interior of the main body and the drive motor can be cooled efficiently.

Abstract: A method and device for heating or hardening at least an axial segment of a rotationally-symmetric surface of a work piece includes rotating the work piece about its rotational axis and moving a peripheral portion of an inductor along a longitudinal profile of the axial segment of the rotating work piece with a constant spacing between the peripheral portion and the axial segment. At least a portion of the movement of the peripheral portion is composed of a first vector component in the direction of the rotational axis and a second component extending perpendicularly to the first vector component. The peripheral portion has a length in the rotational axis direction that is less the length of the axial segment in the rotational axis direction.

Abstract: Because it is possible to cool down a column member at a higher speed than natural cooling, throughput can be improved further. Especially, when the tubular body M42 and the column part M43 are made of different metals and the column part M43 is pressed into the tubular body M42, a distortion will occur in the column member M42 and M43 and the top board M41 fixed to the column member M42 and M43 due to the difference in thermal expansion coefficients between them, but the cooling paths P1 and P2 can absorb a distortion caused by the difference in thermal expansion coefficients of these metals. In particular, when the top board M41 is used as a mold for resin molding, it is possible to perform resin molding precisely because distortion caused by the difference in thermal expansion coefficients does not easily occur.

Abstract: A system and method for inductively heating a work piece. The induction heating system is coupleable to a plurality of temperature feedback devices operable to provide a signal representative of work piece temperature. The induction heating system is operable to control the output of the induction heating system based on the plurality of signals representative of work piece temperature received from the plurality of temperature feedback devices.

Abstract: The present invention relates to a device for tensioning or de-tensioning tools, having a tool shaft in a tool chuck which has a sheath section open on the free end thereof and which is made of electrically conductive material, for receiving the tool shaft in a friction connection, having an induction coil which surrounds the sheath section of the tool chuck, to which preferably high-frequency alternating current can be applied, and which is designed as a ring or cylinder coil, wherein the device has at least one channel running between the inner peripheral surface of the induction coil and the sheath section of the tool chuck, through which flows a cooling agent which cools the sheath section of the tool chuck.

Abstract: An apparatus includes one or more magnetic cores collectively having an inner leg located between two outer legs. The legs are coupled to one or more connecting portions. The apparatus also includes one or more conductive coils wound around the inner leg. The one or more magnetic cores and the one or more conductive coils are configured to generate substantially balanced magnetic fluxes when the conductive coil is energized. Also, the one or more magnetic cores and the one or more conductive coils are configured so that heat created by currents induced in the roll by the magnetic fluxes produces a steady state thermal profile on a surface of the roll. The steady state thermal profile has one peak that falls within a control zone associated with the roll. The one or more magnetic cores could include a single magnetic core or multiple magnetic cores.

Abstract: A superheated steam generator, capable of generating superheated steam which exceeds 400° C. even if a litz wire is adopted as an induction heating coil, and capable of being used as a middle-sized or small-sized home-available apparatus, is provided. The invention provided a superheated steam generator in which induction heating elements 22 which generates heat by electromagnetic induction are housed in a heat-resistant container 21, a hose 24 which allows cooling water to pass therethrough is wound around an outer peripheral surface of the heat-resistant container, a water supply unit 4 for the cooling water is connected to one end of the hose, the other end of the hose is connected to a steam inlet 21A of the heat-resistant container, an induction heating coil 25 is mounted on an outer peripheral surface of the hose, a high-frequency power supply unit 3 is connected to the induction heating coil.

Abstract: 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.

Abstract: Apparatus and method for inductive heating of a material located in a channel. In one embodiment, the heating assembly comprises an interior coil, an exterior sheath inductively coupled to the coil, a dielectric material disposed between the coil and sheath, and a conductor for supplying a signal to the coil to generate the magnetic flux for inductive heating of the sheath. The heating assembly is disposed in the material in the channel, and the magnetic flux generated by the coil may also inductively couple to the material in the channel. The material may be heated from a nonflowable to a flowable state, such as heating a metal or polymer plug formed in a melt channel of a molding apparatus.

Abstract: An electric cooker having a composite heat source includes an external case having an air inlet and an air outlet, a cooking plate mounted on an upper surface of the external case to be a top plate thereof, a heat generating unit mounted between the external case and the cooking plate, the heat generating unit including a work coil and an electric heater and arranged coaxially with the air inlet with respect to a center of the air inlet, a cooling unit coaxially arranged with respect to the center of the air inlet between the air inlet and the heat generating unit, the cooling unit cooling the heat generating unit, an air duct provided below the heat generating unit, and a reflector forming an outer cover of the electric heater.

Abstract: The invention relates to a shrinking device for shrinking a rotary tool into a central receiving opening of a toolholder which holds said rotary tool in a press fit. The device an induction heating device for thermally expanding the toolholder in the area of the receiving opening. A cooling device with at least one cooling collar which can be placed on the toolholder, in physical contact with the same, and through which a liquid coolant can flow, is provided for cooling the receiving opening area of the toolholder. This liquid cooling considerably reduces the overall time span needed for the shrinking process.

Abstract: An induction heating cooker with improved discharge capability and cooling performance comprises a cooking plate 200 formed with a cooking vessel thereon; a cooking body 310 coupled to the cooking plate 200 to define a receiving space 311 therebetween and having an exhaust port 312 communicating with the receiving space 311; a plurality of unit induction heating modules 410 and 420 installed within the receiving space 311 to be partitioned from each other, each having a heating unit 412 or 422, a blowing fan 413 or 423 disposed close to the heating unit to cool the heating unit 412 or 422, and an exhaust passage 415 or 425 for allowing exhaust air generated by the blowing fan 413 or 423 to be guided to and discharged through the exhaust port 312; and a bridge duct 810 for allowing the exhaust passages 415 and 425 of the unit induction heating modules 410 and 420 to communicate with each other, to thereby enable to improve the cooling performance.

Abstract: A method and apparatus for inducing heat within a workpiece. A flexible fluid-cooled induction heating cable is used to produce a magnetic field to induce electric current in a workpiece. The induction heating cable has separate fluid and electrical connectors to separately couple cooling fluid and electric current to and from the induction heating cable. An induction heating system having a fluid cooling unit, a power source, and a flexible fluid-cooled induction heating cable having separate fluid and electrical connectors. An extension cable may be used to enable the flexible fluid-cooled induction heating cable to be used at a greater distance from the power source and the fluid cooling unit. An insulation blanket adapted for use with a specific size workpiece may be used with the flexible fluid-cooled induction heating cable.

Abstract: An inductive cap sealer (10) for sealing an inner seal over an opening (54) in container (52) includes a vented sealing head (12). The sealing head (12) contains an induction coil (24) for producing an electromagnetic field when energized by a power supply. Field focusing elements (26) contain the coil (24) and direct the electromagnetic field to a sealing region beneath the sealing head (12). The housing (20) has a central inlet vent (40) flanked by two outlet vents (42, 44) aligned with a vent plate (46) inside the housing (20) having a plurality of small openings (48) which allow a fan (18) to blow cooling air through the sealing head from only one side of the sealing head (12) in a generally U-shaped flow pattern, preferably from the side opposite the sealing region. The field focusing elements (26) are spaced to allow the cooling air to flow around the field focusing elements (26) and past the coil (24).

Abstract: A method of sealing a foil cap to the opening of a container by induction heating is provided. A heat pipe is used to transfer heat from an induction sealing head assembly.

Abstract: An induction heating system having a fluid cooling unit, a power source, an induction heating device, a controller, and an alarm system to place the system in a safe condition when an improper operating condition is detected. The induction heating system may have a flow switch to detect fluid flow through the system. The system may operate to secure power to the induction heating device when cooling flow is inadequate. Alternatively, the system may increase fluid flow to provide adequate cooling flow. The controller may have a visual indicator of inadequate flow or an improper power source operating condition.

Abstract: The present invention relates to an induction heating coil comprising a litz cable which is wound into a spiral to form a bobbin, and means for cooling said cable indirectly. The litz cable is arranged to be cooled by means of an indirect cooling system that comprises a tube which is wound in an intermeshed fashion with the windings of the litz cable. The present invention relates also to a method on a paper or board machine or on a paper finishing machine, in which method at least one induction heating coil comprising a wound litz cable is used for heating a component, and said coil is cooled indirectly by a cooling medium.

Abstract: The invention relates to a shrinking device (1) for shrinking a rotary tool (5) into a central receiving opening of a toolholder (3) which holds said rotary tool (5) in a press fit. The device comprises an induction heating device (15, 18) for thermally expanding the toolholder (3) in the area of the receiving opening. A cooling device (51, 53) with at least one cooling collar (53) which can be placed on the toolholder (3), in physical contact with the same, and through which a liquid coolant can flow, is provided for cooling the receiving opening area of the toolholder. This liquid cooling considerably reduces the overall time span needed for the shrinking process.

Abstract: This invention is provided for improvement of corrosion-resistant property of a crucible and for promotion of safety in a pyrochemical reprocessing method for the spent nuclear fuel. The spent nuclear fuel is dissolved in a molten salt placed in the crucible. In a pyrochemical reprocessing method, the nuclear fuel is deposited, and the crucible (2) is heated by induction heating. Cooling media (5, 6) are supplied to cool down, and a molten salt layer (7) is maintained by keeping balance between the heating and the cooling, and a solidified salt layer (8) is formed on inner wall surface of the crucible.

Abstract: An induction foil cap sealer includes a sealing head module and power supply module that can be separately mounted and replaced. Both modules are convection air-cooled without a requirement for forced air-cooling or water cooling.

Abstract: Apparatus for induction heating of billet-shaped blanks (10) of electrically well conductive and non-magnetic metal, in particular aluminum or copper, comprising a winding (21) adapted to surround the blank completely or partially, to be supplied with electric alternating current (8) and to be cooled (22) at least during the heating of the blank (10). The winding has turns comprising superconducting material and is enclosed by a thermally insulating chamber (33). The cooling (22) is adapted to maintain the winding at a temperature in the range 30-90° K, and the frequency of the alternating current (8) is adapted to be in the range of common mains frequencies.

Abstract: A method and apparatus for inducing heat within a workpiece. A flexible fluid-cooled induction heating cable is used to produce a magnetic field to induce electric current in a workpiece. The induction heating cable has separate fluid and electrical connectors to separately couple cooling fluid and electric current to and from the induction heating cable. An induction heating system having a fluid cooling unit, a power source, and a flexible fluid-cooled induction heating cable having separate fluid and electrical connectors. An extension cable may be used to enable the flexible fluid-cooled induction heating cable to be used at a greater distance from the power source and the fluid cooling unit. An insulation blanket adapted for use with a specific size workpiece may be used with the flexible fluid-cooled induction heating cable.

Abstract: The present invention relates to an induction heating coil comprising a litz cable which is wound into a spiral to form a bobbin, and means for cooling said cable indirectly. The litz cable is arranged to be cooled by means of an indirect cooling system that comprises a tube which is wound in an intermeshed fashion with the windings of the litz cable. The present invention relates also to a method on a paper or board machine or on a paper finishing machine, in which method at least one induction heating coil comprising a wound litz cable is used for heating a component, and said coil is cooled indirectly by a cooling medium.

Abstract: An induction foil cap sealer includes a sealing head module and power supply module that can be separately mounted and replaced. Both modules are convection air-cooled without a requirement for forced air-cooling or water cooling.

Abstract: Gastight and vacuum-tight chamber intended to be used in a device for heating a product advancing inside the chamber by electromagnetic induction, characterized in that it comprises a gastight and vacuum-tight sheath made of an electrically insulating, gastight and vacuum-tight material, the inner faces of the sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the matrix of tiles.

Abstract: A shrinkage device for rapidly shrinking and outshrinking tools, especially hard metal tools, in so-called shrinkage tension chucks using an induction heating coil, wherein a plurality of shrinkage chucks of paramagnetic or ferromagnetic materials can be positioned on a turntable and brought from a position below the induction coil, which can be lowered, into a cooling position.

Abstract: An inductive cap sealer for sealing an inner seal over an opening in a container includes a vented sealing head. The sealing head contains an induction coil for producing an electromagnetic field when energized by a power supply. Field focusing elements contain the coil and direct the electromagnetic field to a sealing region beneath the sealing head. The housing has openings and the field focusing elements are spaced to allow cooling air to flow around the field focusing elements and past the coil.

Abstract: A magnetic field applicator to heat magnetic substances in biological tissue, having a magnetic yoke with two pole shoes across from each other and separated from each other by a distance that defines the magnetic field exposure volume produced by the applicator, and with two magnetic coils, one assigned to each of the two pole shoes, to produce a magnetic field. The magnetic yoke and the pole shoes consist of ferrite segments assembled together. The pole shoes oppose each other and are surrounded by magnetic disk-shaped coils with one or more windings extending helicoidally, which creates an intermediate air gap between the pole shoes and coils. This results in a magnetic field applicator with the ability to effectively and efficiently administer hyperthermia and thermo-ablation procedures to destroy cancerous tissue in a patient, as well as having uses in other medical and industrial applications.

Abstract: A magnetic field applicator to heat magnetic substances in biological tissue, having a magnetic yoke with two pole shoes across from each other and separated from each other by a distance that defines the magnetic field exposure volume produced by the applicator, and with two magnetic coils, one assigned to each of the two pole shoes, to produce a magnetic field. The magnetic yoke and the pole shoes consist of ferrite segments assembled together. Additionally, the magnetic field applicator is composed of a magnetic yoke having two parallel vertical yoke elements of identical geometry spaced apart a distance from each other, and two transverse yoke elements disposed between said vertical yoke elements. The pole shoes, surrounded by disk-shaped magnetic coils, are attached to the center of said transverse yoke elements and oppose each other over a prescribed distance.