Abstract: A household cooking appliance includes a cooking space and a microwave apparatus which is configured to feed microwaves into the cooking space. The microwave apparatus includes a feed chamber arranged outside of the cooking space and configured to open into the cooking space through an emission opening which is excitable by the microwaves, and a microwave line projecting into the feed chamber and connected galvanically to an electrically conductive wall region of the feed chamber which wall region restricts the emission opening. The feed chamber defines a chamber which is non-resonant for the microwaves.

Abstract: An arrangement for heating a sample by microwave radiation is provided. The arrangement includes a container having an inner space for accommodating the sample and having a bottom container wall, a wave guide arranged to guide a microwave having an electric field direction, a waveguide adapter being adapted to couple the microwave from the wave guide into the inner space of the container via the bottom container wall being oriented to be different from perpendicular to, in particular substantially parallel to, the electric field vector direction.

Abstract: In some embodiments, a process chamber for a microwave batch curing process includes: an annular body having an outer surface and an inner surface defining a central opening of the annular body, wherein the inner surface comprises a plurality of angled surfaces defining a first volume; a first lip extending radially outward from the outer surface of the annular body proximate a first end of the annular body; a second lip extending radially outward from the outer surface of the annular body proximate a second end of the annular body; an exhaust disposed between the first lip and the second lip and fluidly coupled to the first volume, wherein the exhaust comprises a plurality of first openings; a plurality of second openings fluidly coupled to the first volume, wherein the plurality of second openings are configured to expose the first volume to microwave energy; and one or more ports fluidly coupled to the first volume.

Abstract: A system and method for defrosting or heating are presented. A radio frequency (RF) signal source provides, through a transmission path, an RF signal to an electrode that is proximate to a cavity of a defrosting system. A rate of change of a ratio of a reflected RF power measurement and a forward RF power measurement along the transmission path is determined to have transitioned from a relatively high value to a relatively low value. At a point in time when the determination is made, the RF signal is provided to the electrode for an additional time duration beyond the point in time, and provision of the RF signal to the electrode is ceased when the additional time duration has expired.

Abstract: Apparatuses and methods are provided for applying radio frequency (RF) energy from a source of electromagnetic energy to an object in an energy application zone. At least one processor may be configured to acquire information indicative of electromagnetic energy loss associated with at least a portion of the energy application zone. The processor may be further configured to determine a weight to be applied to each of a plurality of electromagnetic field patterns each having a known electromagnetic field intensity distribution and cause the source to supply each of the plurality of electromagnetic field patterns to the energy application zone at the determined weights.

Abstract: An embodiment of a microwave power generation module includes an amplifier arrangement, an impedance matching element, and a resonant element. The amplifier arrangement includes a transistor with a transistor input and a transistor output. The impedance matching element is formed from a planar conductive structure. The planar conductive structure has a proximal end and a distal end, and the proximal end is electrically coupled to the transistor output. The resonant element has a proximal end electrically coupled to the distal end of the planar conductive structure, and the resonant element is configured to radiate electromagnetic energy having a microwave frequency in a range of 800 megahertz (MHz) to 300 gigahertz (GHz). A combination of the impedance matching element and the resonant element is configured to perform an impedance transformation between an impedance of the transistor and an impedance of an air cavity.

Abstract: An operating method of microwave heating device is provided, in which a holder is disposed in a heating chamber, and a plurality of microwave transmitters are arranged outside the heating chamber. A plurality of half-wave-rectified power supplies are provided to connect the microwave transmitters, and the half-wave-rectified power supplies have capacitances respectively. A plurality of longitudinal waveguides and a plurality of transverse waveguides are installed in between the heating chamber and the microwave transmitters. The capacitance of each of the capacitors of the half-wave-rectified power supplies is adjusted, such that the microwave power pulse bandwidth of the microwave transmitters are extended to produce a plurality of overlapped couplings.

Abstract: A microwave irradiation apparatus includes: an annular microwave transmission path; a first microwave generation circuit that is coupled with the microwave transmission path and generates a first microwave; and a second microwave generation circuit that is coupled with the microwave transmission path and generates a second microwave; wherein the first microwave and the second microwave have frequencies equal to each other but have phases different from each other.

Abstract: An apparatus and method for microwave vacuum-drying of organic materials such as food products. The dehydration apparatus (10) has a vacuum chamber (12) with a loading module (14) at one end and a discharge module (22) at the other. The vacuum chamber has access doors (80) spaced between the input end (16) and the discharge end (24) which provide operator and maintenance access. Microwave generators (86) are mounted on each access door and arranged to radiate through a microwave chamber and microwave-transparent window on the access door into the vacuum chamber. The waveguides on a respective access door are oriented to minimize microwave interference between the magnetrons on that door. A conveyor (60) in the vacuum chamber moves the organic material (96) on trays (18) through the vacuum chamber.

Abstract: A high frequency heating apparatus which heats a substrate by applying high frequency waves thereto. The high frequency heating apparatus includes a high frequency generator which generates high frequency to heat the substrate. The distance from the substrate to the high frequency generator is n/2*?, where n is a natural number ranging from 1 to 6, and ? is the wavelength of the high frequency that is generated by the high frequency generator.

Abstract: A soil remediation method for treating contaminated soil includes combining a dielectric carbonaceous nanomaterial with the contaminated soil to yield a composite contaminated soil, and irradiating the composite contaminated soil with microwave radiation to yield a remediated soil. The composite contaminated soil includes at least 1 wt % of the dielectric carbonaceous material, and the microwave radiation provides an energy input of at least 2.5 kWh per kilogram of the composite contaminated soil.

Abstract: An apparatus for applying EM energy to a load may include at least one processor configured to receive information indicative of dissipated energy for each of a plurality of modulation space elements and group a number of the plurality of modulations space elements into at least two subsets based on the information received indicative of dissipated energy. The processor may also be configured to associate a power delivery protocol with each of the at least two subsets wherein the power delivery protocol differs between subsets and regulate energy applied to the load in accordance with each power delivery protocol.

Abstract: A device for heat-treating products using microwaves includes an enclosure (2), a drum (3) having at least one portion mounted inside the enclosure (2), a spacing (4) defined between the enclosure (2) and the drum (3), a support (5) positioned at least partially in the spacing (4) and designed to receive and transport products to be treated, and at least one module (6) for applying microwaves to the products, designed to introduce microwaves into the spacing (4). The drum (3) has a prism shape, extending according to the axis (30) of the drum (3), and including a plurality of sides (31; 31?; 31?) extending parallel to the axis (30). The enclosure (2) includes, internally, several planar surfaces (20; 20?; 20?) each oriented towards one (31; 31?; 31?) of the sides of the drum (3) and extending parallel to the side of the drum.

Abstract: An oven may include a cooking chamber configured to receive a food product, a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber; and an energy conversion assembly provided as a cooking surface of the oven. The energy conversion assembly may be configured to convert at least some of the RF energy into thermal energy for heating the food product, while at least some other portion of the RF energy is directly applied to the food product to heat the food product.

Abstract: A microwave reactor constructed to produce a homogeneous heat distribution across the body of the microwave reactor subsequent exposure to microwave irradiation. The microwave reactor includes a body having an exterior wall transparent to microwave irradiation. A microwave sensitized element layer is adjacent the exterior wall and is comprised of a carbide mixture wherein the carbide mixture includes a carbide mixed with either a metal oxide, a ferrite or a nitride. The carbide mixture is in granular form wherein the carbide has a larger particle size than the other component. The microwave sensitized element layer further includes a metal layer that extends the length thereof. The metal layer is positioned in various arrangements within or adjacent to the carbide mixture. The body further includes an inner layer adjacent to the microwave sensitized layer opposite the exterior wall. The inner layer is transparent to microwave irradiation.

Abstract: An apparatus and method for heating a material are disclosed. The apparatus includes one or more magnetron assemblies positioned on each of opposing sides of a heating region. The magnetron assemblies positioned on one side of the heating region generate overlapping microwaves that propagate in a first direction through the material, and the magnetron assemblies positioned on the other side of the heating region generate overlapping microwaves that propagate in a second direction through the material. The overlapping microwaves provide a total wave voltage that is substantially constant across the material resulting in substantially even heating of the material.

Abstract: Medical devices and methods for drying medical devices are disclosed. An example method for drying a medical device may include disposing a medical device within a drying apparatus. The drying apparatus may include a variable frequency microwave heating device. The medical device may include a substrate, the substrate including an active pharmaceutical ingredient and a solvent. The method may also include heating the medical device with the drying apparatus. Heating may evaporate at least a portion of the solvent.

Abstract: A safety timer device, for a cooking appliance connected to an energy source, the cooking appliance having a heat generating component in communication with a heat controller. A timer communicates with the heat controller configured to count down a predetermined cooking time. An alarm unit, in communication with the timer, is configured to communicate an alarm signal for a predetermined alarm time after the cooking time expires.

Abstract: A method and related system for presenting time on an appliance. The method includes connecting at least a first and second appliance to each other with a network, establishing a time of day, presenting the time of day on a display of the first appliance, and deactivating a display of the second appliance such that the time of day is not presented on the display of the second appliance.

Abstract: According to one embodiment, a microwave annealing apparatus is provided, including a housing shielding electromagnetic waves, a first electromagnetic wave source configured to apply a first electromagnetic wave into the housing, a second electromagnetic wave source configured to apply, into the housing, a second electromagnetic wave having a higher frequency than the first electromagnetic wave, a susceptor configured to hold a semiconductor substrate, made of a material transparent to the first electromagnetic wave and provided in the housing, a temperature measuring device configured to measure the temperature of the semiconductor substrate, and a control unit configured to control the power of each of the first and second electromagnetic wave sources in accordance with the temperature measured by the temperature measuring device.

Abstract: A microwave radiation applicator for exposing mined material to microwave radiation is disclosed. The applicator includes side walls 3 and end walls 5 that define a chamber. One end wall has an opening that forms an inlet for mined material to be supplied to the chamber and the other end wall has an opening that defines an outlet for mined material to be discharged from the chamber. The side walls define a pentagon in transverse cross-section.

Abstract: This invention discloses a kind of method to remove organic pollutants through coupling microwave degradation based on microporous mineral adsorption. It consists of the following major steps: Fill hydrophobic porous mineral adsorbent into the adsorption column to adsorb organic pollutants in the organic wastewater, and start up the microwave generator after the adsorbent reaches saturation so that the organic pollutants adsorbed inside the adsorption column can be degraded under microwave induction. With the alternative operation and regeneration of two adsorption columns, the organic wastewater can be treated continuously. In the invention, with the technologies of microwave-induced degradation through hydrophobic microporous mineral coupling adsorption, organic pollutants can be removed from water efficiently, and the degradation process and carrier can be circulated. The pollutants can be mineralized into non-toxic and harmless micromolecular substance completely.

Abstract: An electromagnetic heater for heating an irregularly shaped object, including: a cavity within which an object is to be placed; at least one feed which feeds UHF or microwave energy into the cavity; and a controller that controls one or more characteristics of the cavity or energy to assure that the UHF or microwave energy is deposited uniformly in the object within ±30% over at least 80% of the volume of the object.

Abstract: Disclosed is an apparatus for applying RF energy to an object in an energy application zone via one or more radiating elements at a plurality of modulation space elements (MSEs). The apparatus may include at least one processor configured to cause supply of RF energy to one or more of the radiating elements in a first subset of the plurality of MSEs, at a first power level common to the MSEs in the first subset and for varying time durations, and cause supply of RF energy to one or more of the radiating elements in a second subset of the plurality of MSEs, at power levels lower than the first power level and for a time duration common to the MSEs of the second subset.

Abstract: The present invention relates a microwave applicator for heating a sample by microwave radiation which is transmitted via an at least partially tapering transmission duct from a microwave source to a cavity adapted to receive the sample to be heated. The transmission duct has at least one external wall, said wall defining an internal space for the propagation of said microwave radiation and comprising an interface which is at least partially permeable to said microwave radiation. The interface is at least partially arranged within said tapering portion of the duct. The duct is adapted to form a jacket surrounding the cavity with said interface forming an inner wall of said jacket.

Abstract: An apparatus for applying RF energy to an object in a cavity is disclosed. The apparatus may include a plurality of pairs of radiating ports, and a plurality of electrically conductive elements. Each pair of radiating ports may include two radiating ports configured to emit RF radiation into the cavity coherently with each other; and each electrically conductive element may be positioned between two radiating ports constituting a pair of radiating ports. The electrically conductive elements may be arranged such that RF radiation emitted by the plurality of pairs of radiating ports concentrates closer to the center of the cavity than that in the absence of the electrically conductive elements.

Abstract: A cooking appliance such as a microwave oven is provided with a sacrificial region for repairing damage caused by arcing and related failure modes. The sacrificial region incorporates a component that, when damaged, is removable from the cooking appliance for replacement by another component of similar construction. In one implementation, a sacrificial component is utilized in a microwave oven with a heated cavity subject to microwave radiation from a magnetron. The sacrificial component in this example includes an aperture that communicates with an opening in the cavity, and through which the radiation impinges into the heated cavity.

Abstract: A heating system for hot water and conditioned air uses electromagnetic energy created by one or more magnetrons operated by high voltage transformers. The heating system includes oil cooled transformers and magnetrons. Using radiators in the form of heat exchangers, heat recovered from the transformers and magnetrons is dissipated directly into the path of the return air and the air handler blower. The magnetron heating system includes a coiled conduit sized to allow complete heating of the fluid flowing therethrough. The conduit has a conical shape to allow upper magnetrons to heat the outside of the conduit and lower magnetrons to heat the inside of the conduit.

Abstract: A method of delivering energy to an object in a cavity may include transmitting electromagnetic energy to the cavity at a plurality of frequencies. At each of the plurality of frequencies, the method may also include determining an efficiency of energy transfer into the object and adjusting power transmitted at each of the plurality of frequencies such that a multiplicative product of the efficiency and the power transmitted is substantially constant across each of the plurality of frequencies.

Abstract: An apparatus and method for processing food products is provided. The product conditioning system includes an inlet assembly, a pressurizeable tunnel and an outlet assembly. The inlet assembly and outlet assembly include a pair of vertically extending pressure vessels having entry and exit openings which are both sealable by doors to provide liquid and gaseous tight seals. The inlet and outlet assembly pressure vessels further include a pair of vertically extending parallel screws for transporting food products from one end of the pressure vessel to the other. The pressurizeable tunnel includes a heating stage having microwave sources for irradiating food products so as to pasteurize or sterilize prepackaged food. The pressurizeable tunnel further includes a heat maintenance stage and product cooling stage. Both the heat maintenance stage and product cooling stage include vertically extending pressure vessels.

Abstract: A microwave heating apparatus includes a microwave generation part (5) having a plurality of output parts, a heating chamber (4) to contain an object to be heated, a plurality of feeding parts (21a, 21b, 21c, 21d) supplying outputs of the plurality of output parts to the heating chamber, and a control part (6) controlling microwave radiation from the plurality of feeding parts to control an electromagnetic wave distribution in the heating chamber, in which a microwave is concentrated on the object to be heated put in the heating chamber.

Abstract: The present invention concerns a device for heating a sample by microwave radiation comprising a source of microwave radiation, a first waveguide for guiding said microwave radiation to an applicator space adapted to receive said sample to be heated, wherein said applicator space is defined by a terminal portion of said first waveguide and an initial portion of a second waveguide extending from said terminal portion of said first waveguide and being arranged at an angle with respect to said first waveguide.

Abstract: A combined plenum divider/hopper is provided for a grain drying tower. The divider/hopper is positioned in the drying tower proximate the heater for the drying tower and is operable to adjust the ratio of the length of the heating portion of the plenum to the length of the cooling portion of the plenum.

Abstract: A microwave heating device comprises a cavity arranged to receive a load to be heated and a feeding structure for feeding microwaves in the cavity. The feeding structure comprises a transmission line for transmitting microwave energy generated by a microwave source and a resonator arranged at the junction between the transmission line and the cavity for operating as a feeding port of the cavity. The dielectric constant of the material constituting the interior of the resonator and the dimensions of the resonator are selected such that a resonance condition is established in the resonator for the microwaves generated by the source and impedance matching is established between the transmission line, the resonator and the cavity. In addition, the present invention provides a microwave heating device comprising a plurality of feeding ports with reduced crosstalk.

Abstract: In a microwave irradiation apparatus, an applicator portion has an interior space for housing an object to be irradiated. A first microwave irradiation system outputs a first microwave to the interior space in a first mode so as to generate a large electric field and a small magnetic field at a specific place of the interior space. A second microwave irradiation system outputs a second microwave having a polarization plane crossing a polarization plane of the first microwave to the interior space in a second mode so as to generate a large magnetic field and small electric field at the specific place of the interior space.

Abstract: The invention relates to a microwave waveguide element for matching a standard waveguide input port to an enlarged waveguide output port. In the waveguide element, a plurality of intermediate waveguide segments is cascaded in the propagation direction of the microwave energy to first split the waveguide element into two symmetrical waveguide branches and then combine the branches at the output port. Thus, the width of the waveguide element is gradually enlarged and the input port is matched to the output port. The intermediate waveguide segments are preferably dimensioned such that respective characteristic impedances are approximately matched with each other for the fundamental mode.

Abstract: A cooking device includes a cooking chamber; a first deodorization region along which air from the cooking chamber flows and in which a plasma discharge is generated for removing odor-producing materials generated in the cooking chamber from the air; and a bypass region along which air from the cooking chamber flows to bypass the first deodorization region.

Abstract: The invention described herein generally pertains to a process for reducing an organic-containing material into lower molecular weight gaseous hydrocarbons, liquid hydrocarbons and solid carbon constituents, said process including the steps of: feeding a sample of said organic-containing material into an infeed system, wherein the infeed system contains a non-flammable blanketing purge gas; transferring the material into at least one microwave applicator containing the purge gas in a pressurized state above local atmospheric pressure to insure that no air migrates into said microwave applicator which might cause a fire or explosion hazard; exposing the material in said microwave applicator to at least two sources of microwaves from at least a pair of divaricated waveguide assemblies for a period of time sufficient to volumetrically reduce said material into said constituents, a frequency of said microwaves between approximately 894 MHz and approximately 1000 MHz and without an external heat source, the microw

Abstract: An autoclave for pressure and temperature treatment of objects includes a pressure container having a pressure resistant wall which encloses a pressure chamber for receiving the objects to be treated, the pressure chamber having a free inner diameter of at least 1.5 m; and a heat source for heating the objects received in the pressure chamber, the heat source including a plurality of microwave sources irradiating microwave radiation, which are arranged outside the pressure container. The microwave sources are distributed over the pressure resistant wall at an areal density of at least 4 microwave sources per square meter surface area of the pressure resistant wall; and the microwave radiation irradiated by the microwave sources is coupled through the pressure resistant wall into the pressure chamber.

Abstract: Disclosed are an apparatus and a method for sterilizing a food product. The apparatus comprises an ionization unit for holding the food product, a housing enclosing the ionization unit, a bipolar ionization assembly and a pulse power energization assembly. The bipolar ionization assembly comprises a generator unit and at least one ionization tube for generating bipolar ionization within the ionization unit for sterilizing the food product. The pulse power energization assembly comprises at least one ultraviolet light energy source for generating pulsed energy and at least one ultraviolet light emitting unit for generating pulsed ultraviolet light within the ionization unit upon receiving the pulsed energy. The pulsed ultraviolet light is capable of irradiating the food product for sterilizing purposes.

Abstract: Embodiments discussed herein relate to sensor devices and processes of producing them. Some embodiments include a sensor device with a substrate with a sensing element mounted above the substrate, with a heating element, mounted substantially coplanar to the sensing element; and with a heat spreading element, the heat spreading element thermally coupling the sensing element and the heating element.

Abstract: An improved vertical aeration system is provided for a grain bin having a sloped hopper bottom with a discharge opening. A pyramid frame includes legs with lower ends attachable to the hopper bottom. Concave perforated walls are attached to the legs. Braces extending between the legs provide structural support for the walls. An air duct extends upwardly and centrally into the interior of the frame, to supply air into the aeration system for flow outwardly through the perforated walls.

Abstract: This invention relates to a method of and an apparatus for thawing an object to be thawed. The method of thawing an object to be thawed according to the present invention comprises a step of generating a first stream (F1) inside of a reservoir (8) containing liquid by supplying additional liquid into the reservoir. The first stream flows to surround the object to be thawed introduced into the reservoir (8). The method further comprises a step of thawing the object to be thawed introduced into the reservoir (8) while it is rotated on its axis by the first stream (F1).

Abstract: A high voltage input apparatus for a magnetron, in which first protrusions formed on lead conductors are caught by insulators and an insulating case, a ground metal is bonded to the insulating case, and expanded portions formed on the insulators are caught by the insulating case and the ground metal, thereby firmly fixing the lead conductors and preventing the lead conductors from being undesirably separated from the insulators and the insulating case.

Abstract: In an apparatus for microwave-assisted preparation of specimens, the microwave chamber for reception of specimens to be processed is embodied as a waveguide (3), in particular as a monomode waveguide, and is equipped with at least one opening (3a) for introduction of the at least one specimen (11) into the waveguide. A cooling circuit comprises a cooling means (8) adapted to cool the fluid (12), which fluid surrounds the at least one specimen and is separated from the cooling liquid of the cooling circuit, in the region of the at least one specimen (11) inside the waveguide. The opening (3a) can be sealed in microwave-tight fashion, by means of a closure means (7), during operation of the apparatus.

Abstract: A microwave or radio frequency device including an applicator for receiving an object to be processed, and a plurality of generators supplying power to the applicator via propagation guides. According to the invention, three propagation guides propagating the microwaves or radio frequencies generated by three respective generators are mounted on three respective plates defining a three-dimensional rectangular axis system, and symmetrical relative to a ternary axis of symmetry of the axis system, whereby the generators supplying power to the applicator are mutually decoupled. The three propagation guides have a rectangular cross-section and are mounted on respective plates in such a way that the short sides of the rectangular cross-section of said guides are orthogonal in pairs, or are coaxial cables extending in a longitudinal propagation direction perpendicular to the plates with one exposed end thereof extending into the applicator.

Abstract: A method and apparatus for creating uniform heating of an microwave absorptive target. A circularly polarized waveguide mode is created that promotes uniform heating of the microwave absorptive target by rotating a propagated non-uniform field pattern around a central axis of a cylindrical cavity or waveguide. In the process of rotating the field pattern, hot and cold spots in the field pattern are averaged out over time.

Abstract: In an even numbered polygonal microwave resonator wherein a high mode microwave mode is formed and in the resonator volume a homogeneous field distribution is established for the thermal processing of workpieces, a microwave in-coupling structure pair is provided along a joining edge of two wall segments alternately at opposite sides and the in-coupling structure pairs or in communication, via a rectangular microwave guide channel, with a microwave sources supplying microwaves to the in-coupling structure pairs so that the microwaves entering the resonator from each in-coupling structure are directed toward an opposite corner area of the resonator and are reflected from the opposite corner area back into the center area of the resonator in the form of separate beams.

Abstract: Apparatus for pasteurizing and/or sterilizing foodstuffs. In one representative embodiment, an apparatus for pasteurizing or sterilizing a packaged foodstuff includes at least one cavity in which the foodstuff to be pasteurized or sterilized is positioned. The cavity is configured such that, as microwave energy radiates into the cavity, the cavity operates as a single-mode cavity for sterilizing or pasteurizing the foodstuff. In another embodiment, methods are provided for optimizing a microwave system for sterilizing or pasteurizing a foodstuff.

Abstract: The invention may be broadly conceptualized as an approach in which a microwave oven (120) receives a plurality of program recipes from a network that are executed by scanning with a scanner (1326) a symbol and associating the scanned symbol with one of the plurality of program recipes while keeping a real-time clock (1308) synchronized and correctly set by receiving period time synchronization messages.