Abstract: An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. The driving apparatus of the present invention is an induction heating apparatus in which the electrostatic shielding member is provided between an object to be heated and an induction heating coil where sensing portion for sensing the conduction condition of the electrostatic shielding member is provided, and driving portion for driving the induction heating coil is controlled through sensing by the sensing portion.
Type:
Grant
Filed:
March 19, 2003
Date of Patent:
March 7, 2006
Assignee:
Matsushita Electric Industrial Co., Ltd.
Abstract: An induction heating device for inductively heating an object to be heated which is formed of conductive material has a holder. The holder is positioned outside the object. The device has an exciting coil for inductively heating the object. The exciting coil is supported by the holder. The exciting coil is composed of a plurality of turns of conductor forming a layer, which is positioned along the object. The device also has a demagnetizing coil which is positioned along the layer of the exciting coil. In the demagnetizing coil, a back electromotive force is induced in accordance with a magnetic field produced by the exciting coil, so as to cancel the magnetic field. Stability in the temperature control for the object such as a heating roller can be improved by effective function of the demagnetizing coil. The device can be miniaturized and configured at low cost.
Type:
Grant
Filed:
March 29, 2004
Date of Patent:
February 28, 2006
Assignee:
Konica Minolta Business Technologies, Inc.
Inventors:
Makoto Fujii, Ken Tanino, Yasuhiro Ohno, Masami Miyazaki
Abstract: A bacon cooker and method for microwave cooking of bacon. The bacon cooker includes an outer container, an inner container, a rack, and a lid. The lid is releasably attached to the container via a plurality of cam locks that which engage the container and rim and force the rim into the engagement with the underside of the lid. Lever arms with clasps specifically dimensioned to securely engage the outside wall of the lid when the cam locks in are the locked position. The rack is dimensioned to fit inside the container and consists of a plurality of radially extending vanes over which bacon is hung for cooking. The rack includes a upwardly extending stem with alternate vanes dimensioned to fit within a centrally located bore on the lid for securing the container to the lid. A microwave reflective surface is positioned between vacuum sealed outer and inner containers.
Abstract: A microwave oven is provided, which includes a main cabinet for enclosing and protecting various components, having air inlet holes, a base frame under the main cabinet having a box form with an opened top and a front part with a plurality of air outlet holes, a bottom plate on the base frame, an inner case in a space above one side part of the bottom plate, the inner case having a cooking chamber formed therein, at least one magnetron, a transformer for regulating a voltage provided to the magnetron, at least one waveguide, a fan in a rear of outside of the inner case, and a flow guide for guiding air passed through the magnetron toward air outlet holes, thereby cooling components effectively, reducing a volume, and cost of the product.
Abstract: The present invention relates to the field of electromagnetic induction and short circuit heating. The iron core in the heating device of present invention, which is in the form of EI, is completely made of multi-layered silicon steel sheets to form a closed three-phase magnetic loop; each of the three core legs of the EI-formed iron core is coiled with a winding, i.e. the three-phase primary winding; the iron core and the three-phase primary windings are all enclosed in a metal shell, which is the secondary side that surrounds the iron core and the primary winding of each phase along the closed three-phase magnetic loop to constitute the main heating body of this heating device, in addition to act as a protecting shell and a radiator for the iron core and the three-phase primary winding.
Abstract: A continuous feed microwave applicator having a choke formed along a longitudinal gap. A conveyor may be fit to run along the length of the applicator, within the gap.
Abstract: In a high frequency heating apparatus, a microcomputer inputs the phase signal of a commercial AC power supply and determines whether a timer switch in a mechanical timer apparatus is in ON-state to determine whether the high frequency heating apparatus is in a heating-time set state. If so, the microcomputer turns on a switch that controls the conduction between the commercial AC power supply and a high voltage transformer at such a timing that minimizes the rush current in accordance with the phase of the commercial AC power supply, thereby suppressing the rush current, allowing the user to visually confirm the remaining heating time, and realizing a cost reduction.
Abstract: A microwave oven includes a cooking cavity, a skewer which receives food therethrough to hold the food, and a container which contains the food therein so as to prevent oil produced from the food from being adhered to an inner wall of the cooking cavity. Accordingly, the oil generated from the food is not spattered onto the inner wall, and is allowed to collect in an oil collecting tray of the microwave oven through one or more holes of the container.
Abstract: A system and method for thermally expanding a product submerged in heating medium located in an internal compartment of a microwave oven. The heating medium is subjected to low doses of micro-radiation in order to become heated and thermally expand the encapsulated product.
Abstract: An RF heating system for generating precision stray RF fields that can be used to heat materials. The RF heating system includes an RF power supply for generating RF signals and an electrode apparatus that is coupled to the RF power supply. An electrode apparatus according to the present invention has many advantages over existing electrode apparatuses. For example, the electrode apparatus is easier to manufacture, easier to duplicate, easier to control the manufacturing tolerances on the electrode system, and easier to correctly place and design the resulting RF stray field.
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: A delivery apparatus is provided by the invention. The delivery apparatus includes a container for holding an article to be delivered and a heater. The container includes a housing forming an interior area and an opening. The opening is provided with a size sufficient to allow movement of the article from outside the container to within the interior area, and from within the interior area to outside the container. The heater is provided for placement within the interior area for heating the article. The heater includes an electrically conductive coil for providing an electric current when exposed to a magnetic field, and an electrical resistance heating element for generating heat. The electrical resistance heating element is provided in electrical connectivity with the electrically conductive coil. A delivery apparatus assembly is provided which includes an induction range for generating a magnetic field. A heater and a method for delivering food are provided by the invention.
Type:
Grant
Filed:
July 27, 2004
Date of Patent:
January 24, 2006
Assignee:
Vesture Corporation
Inventors:
Byron C. Owens, Mark E. Van Hoy, William M. Bostic
Abstract: A heating apparatus has a magnetic flux generator and a rotatable induction heating element for generating heat through electromagnetic induction by the action of magnetic flux generated by the magnetic flux generator, and heats a material to be heated by causing the material to be heated to contact the induction heating element. The heating apparatus further includes a thermistor for detecting a surface temperature of the induction heating element, power supply circuits for controlling power to be supplied to the magnetic flux generator on the basis of signals from the temperature detection, a Curie temperature reaching detector for detecting that the temperature of the induction heating element reaches the Curie temperature, and control circuits for detecting that the material to be heated is wound around the induction heating element on the basis of signals from the thermistor and the Curie temperature reaching detector.
Abstract: The present invention relates to an oven that includes radiant cooking elements, a microwave cooking element, as well as convection cooking heating elements. The cooking elements are controlled to provide reduced cooking time as compared to known radiant ovens, yet a wide variety of foods can be cooked in the oven. The oven is operable in a speedcooking mode wherein both radiant and microwave cooking elements are utilized, a microwave only cooking mode wherein only the magnetron is utilized, and a convection/bake mode wherein radiant and convection cooking elements are utilized.
Type:
Grant
Filed:
January 11, 2001
Date of Patent:
January 17, 2006
Assignee:
General Electric Company
Inventors:
Todd Vincent Graves, Kevin Farrelly Nolan, Brian Robert Goodrich
Abstract: A microwave oven includes a door. The door includes a door unit for selectively opening/closing a cooking chamber and a control unit, for controlling an operation of the microwave oven, is arranged at a predetermined part of the door unit.
Abstract: Microwave oven including a cavity for placing food therein, a magnetron for generating a microwave, a waveguide having at least two slots for guiding the microwave from the magnetron to an inside of the cavity, and a stirrer fan rotatably mounted on an inside of the cavity for varying an interfered state of the microwaves periodically, thereby heating the food more uniformly.
Type:
Grant
Filed:
August 13, 2004
Date of Patent:
January 3, 2006
Assignee:
LG Electronics Inc.
Inventors:
Jin Yul Hu, Kwong Yong Kim, Won Hui Lee, Eung Su Kim
Abstract: Disclosed is an apparatus for exhausting pollutant for a microwave oven, the apparatus comprising: a sensor part formed at a predetermined portion of the microwave oven, for detecting fumes and/or moisture contained in polluted air generated during a cooking process; a controller for determining whether or not amount of the fumes and/or moisture detected by the sensor part is greater than a predetermined reference value; and a fan driving part operated, when the amount detected by the controller is greater than the reference value, by a driving signal from the controller and allowing air containing the pollutant to be inhaled and then removed from an interior.
Abstract: A heating apparatus includes a magnetic field generator for generating an AC magnetic field; a heat generation member for generating heat by the magnetic field generated by the magnetic field generator, the heat generation member being effective to heat a material to be heated; a magnetic field suppressing member for suppressing the magnetic field from the magnetic field generator; a moving unit for moving the magnetic field suppressing member into a gap between the magnetic field generator and a heat generating portion where the magnetic field generated by the magnetic field generator substantially acts on the heat generation member; a magnetic field controller for controlling an effective magnetic field generated by the magnetic field generator, wherein the magnetic field controller changes the magnetic field generated by the magnetic field generator in accordance with a moving operation of the magnetic field suppressing member, and wherein the effective magnetic field in a heating operation for the materia
Abstract: A luminous device includes one or more line-shaped luminous units each including an elongated light guide, one or more light sources, and a reflective layer. The light guide has a generally flat luminous surface for emitting light and another surface disposed away from the luminous surface. The light source serves to provide light into the light guide. The reflective layer is disposed on the above-mentioned another surface of the light guide. The light guide may have a ring shape. Since the luminous device produces a continuous line-shaped luminous image, e.g., a ring-shaped luminous image, it may be used for clearly indicating a heating range of an induction heating cooker.
Type:
Grant
Filed:
June 26, 2002
Date of Patent:
November 29, 2005
Assignee:
Matsushita Electric Industrial Co., Ltd.
Abstract: A method of microbially decontaminating at least one of a defined area and an item within the defined area. The method includes the steps of (a) inductively heating a block comprising an electrically non-conductive material and an electromagnetically responsive material; (b) passing an atomized liquid into an interior passage defined by the block, wherein the inductively heated block vaporizes the atomized liquid that contacts walls of the passage to form an antimicrobial vapor; and (c) flowing the vapor out of the block to the defined area to microbially decontaminate at least one of the defined area and the item.
Type:
Grant
Filed:
November 23, 2004
Date of Patent:
November 22, 2005
Assignee:
Steris Inc.
Inventors:
Michael A. Centanni, Aaron L. Hill, Francis J. Zelina