107 results about "Dielectric heating" patented technology

The utility model discloses a Sic VDMOSFET structure with lower manufacturing cost, which relates to the technical field of semiconductor power devices and comprises a drain electrode, a conductive substrate layer arranged above the drain electrode, conductive epitaxial layers arranged on two sides of the upper end of the conductive substrate layer, a conductive column area arranged in the middle of the upper end of the conductive substrate layer, and a conductive electrode arranged in the conductive column area. A gate dielectric layer and a gate electrode are arranged above the conductive column region, a conductive polycrystalline silicon carbide layer is arranged in the gate dielectric layer, buffer structures are arranged above the two conductive epitaxial layers, and a conductive power supply region and a conductive well region are respectively arranged above the two buffer structures. According to the Sic VDMOSFET structure with the low manufacturing cost, the use stability of a Sic VDMOSFET device is improved, the resistance value of the Sic VDMOSFET device can be adjusted in time along with high temperature generated during power transmission, and meanwhile the problem that electric leakage loss occurs due to the fact that current is increased due to medium heating caused by movement of charged particles is solved.

A radio frequency (RF) dielectric heating system includes a solid-state RF power generator, a matching network electrically coupled to the RF power generator, and a dielectric heating applicator electrically coupled to the matching network and including electrodes for applying RF power to a dielectric material. A solid-state RF power generator can include a power supply, an RF power amplifier stage electrically coupled to the power supply, and a control system electrically coupled to and configured to control the RF power amplifier stage. The control system can be configured to regulate an output voltage of the RF power generator to provide a constant RF power generator output current to maintain a constant voltage across the applicator electrodes. Examples of RF power generators and methods for RF dielectric heating are also disclosed.

Provided is a dielectric heating device and a printing system, which provide a technique for adjusting the amount of heating of a heated object based on the dryness of the heated object without using a sensor for measuring the moisture content in the dielectric heating device. The dielectric heating device includes: an electrode unit having a first electrode and a second electrode that oppose a heated object, for heating the heated object; a voltage application unit that applies an alternating-current voltage to the first electrode and the second electrode; a current value detection unit that detects a current value of an alternating-current current flowing through the electrode unit; a phase difference detection unit that detects a phase difference between the alternating-current voltage and the alternating-current current; an impedance detection unit that detects the impedance of the electrode unit based on the current value and the phase difference; and a control unit that controls the output of the alternating-current voltage output to the electrode unit based on the impedance.

The present invention provides a dielectric heating aerosol generating structure with distributed electrodes, which relates to the field of aerosol generation technology and includes an aerosol generating device and an aerosol generating component. The aerosol generating device is provided with a working chamber, the aerosol generating component includes an aerosol generating substrate, a sensor is provided in the aerosol generating substrate, and distributed electrodes are provided on the side walls of the working chamber. The distributed electrodes include an anode plate and a cathode plate. The aerosol generating device is provided with a power supply and a controller, so that when the aerosol generating substrate is inserted into the working chamber, the controller controls the power supply to generate alternating current to power the anode plate and the cathode plate, thereby forming an alternating electric field dielectric heating sensor. The present invention has a simple structure and adopts a dielectric heating method instead of a resistive heating method. It can effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol, and the distributed electrodes can further promote uniform heat distribution during the dielectric heating process.

An aerosol generating device according to an embodiment includes an insertion space into which at least a portion of an aerosol generating article is inserted, a source unit configured to generate a radio frequency (RF) signal, a power converter configured to generate direct current of various levels, a heater configured to heat the aerosol generating article, and a processor, wherein the processor is further configured to control the power converter and the source unit to operate the heater in a dielectric heating mode in which electromagnetic waves are radiated into the insertion space or a resistance heating mode in which thermal energy is transmitted to the insertion space and to provide the RF signal or the direct current to the heater.

An aerosol-generating device is disclosed. An aerosol-generating device includes a body and a radiating unit disposed in the body and providing an insertion space in which an aerosol-generating article is accommodated, where the radiating unit includes: an antenna surrounding the insertion space, the antenna configured to emit microwaves for dielectric heating of the aerosol-generating article; and a hollow dielectric portion disposed inside the antenna to support the antenna, the dielectric portion having an insertion space provided therein; and wherein the dielectric portion includes at least one of quartz, glass, ceramic, polyimide, or polytetrafluoroethylene.

The disclosed clothes dryer comprises: a cabinet; the roller is rotatably arranged in the cabinet; a plurality of electrodes spaced apart from each other along a circumference of the drum between the cabinet and the drum; an RF power supply unit for applying a voltage to the plurality of electrodes; and a control unit that controls the RF power supply unit to generate an electric field for dielectric heating of the object to be dried accommodated in the drum through the plurality of electrodes.

Provided is an adhesive (1A) for high-frequency dielectric heating, which contains a thermoplastic resin (A) (13) and a dielectric filler (B) (15), and which satisfies at least one condition selected from the following conditions (1) and (2): (1) the circularity of the two-dimensional shape of the dielectric filler (B) (15) observed on a cut surface obtained by cutting the adhesive (1A) for high-frequency dielectric heating in the thickness direction is 0.40 or less; (2) The transmittance ratio (T1 / T2) of the transmittance (T1) at a wavelength of 500 nm to the transmittance (T2) at a wavelength of 1000 nm of the adhesive (1A) for high-frequency dielectric heating is 0.65 or less.

The present application relates to a dielectric heating device and a printing system. The present application provides a technology capable of suppressing uneven heating while heating both a carbon black-containing ink and a non-carbon black-containing ink attached to a medium. The dielectric heating device of the present application heats a first carbon black-containing ink and a second non-carbon black-containing ink attached to a medium. The dielectric heating device includes a first electrode unit having a first electrode and a second electrode facing the medium as an electrode unit for heating the first and second inks, and a first voltage application unit applying an alternating voltage of a frequency of 300 MHz or more and 300 GHz or less to the first and second electrodes.

The application belongs to the field of food heating, and discloses a method for improving the uniformity of dielectric heating based on a wave-absorbing particle coating, which can uniformly heat a predetermined food stack without directly contacting the surface of the food stack, by setting the density distribution of electromagnetic wave-absorbing particle clusters corresponding to the cold and hot zone distribution of the predetermined food stack, thereby avoiding the negative impact on the original quality of the food stack and reducing the willingness of consumers to purchase. First, the accumulation shape of the predetermined food stack is obtained through simulation, and a corresponding cold and hot zone distribution model is obtained. Then, a hollow heat-conducting element is set to be inserted into the predetermined food stack, the hollow heat-conducting element contains electromagnetic wave-absorbing particle clusters, and the distribution density of the electromagnetic wave-absorbing particle clusters in the hollow heat-conducting element is set based on the cold and hot zone distribution model of the predetermined food stack, thereby realizing the uniform heating of the predetermined food stack. The application also discloses a dielectric heating uniform heating device based on a wave-absorbing particle coating, which can better implement the above method.

A carbon capture composite particle comprising a core and a shell, wherein: (i) the core of the carbon capture composite particle comprises a liquid sorbent reactive with carbon dioxide; and (ii) the shell of the carbon capture composite particle encapsulates said core and comprises a multiplicity of hydrophobic-coated oxide particles, wherein gas-permeable spacings are present between the hydrophobic-coated oxide particles, and said hydrophobic-coated oxide particles have a main group or transition metal oxide inner portion encapsulated by a coating of hydrophobic molecules. Also described herein is a method for capturing carbon dioxide by contacting a gaseous source containing CO2 with the above-described carbon capture particles. Also described herein is an apparatus with a microwave-transparent or radiofrequency-transparent column (or window in the column) for regenerating carbon capture particles that have been reacted with CO2 by exposing the particles to microwave or radiofrequency electromagnetic radiation for direct conductive heating.

A three-dimensional decorative piece that is made of a thermoplastic synthetic resin and can retain bulkiness and shape by a core and a method of producing the same. The three-dimensional decorative piece includes an upper layer molded body made of an upper layer material with a metal vapor-deposited layer and having a three-dimensional shape with a convex portion formed on its front surface side through a high-frequency dielectric heating, a core formed by curing a flowable synthetic resin filled in the convex portion of the upper layer molded body, and a substrate bonded a back surface side of the core by fusion.

Provided is an aerosol-generating device (120) for dielectrically heating an aerosol-forming substrate (110. 1). The aerosol-generating device (120) comprises a dielectric heater assembly (130, 135) having a heating region (140) for receiving an aerosol-forming article (105). The aerosol-generating device (120) further comprises an radio frequency source (150) for supplying power to the dielectric heater assembly (130, 135) to generate the aerosol over a heating period when the aerosol-forming article (105) is received in the heating region (140). The aerosol-generating device (120) also comprises one or more sensors (185, 187, 188) configured to measure one or more input parameters associated with operating conditions of the aerosol-generating device (120) during the heating period of the aerosol-generating device (120). A control unit (180) comprises a model comprising data indicative of a relationship between the one or more input parameters and an output variable over a range of input parameter values. The control unit (180) is configured to: receive the one or more measured input parameters; and indirectly estimate, using the model, an output variable value based on the received one or more measured input parameters.

The present invention relates to a portable and hand-held aerosol-generating device, and in particular to an aerosol-generating device for dielectrically heating an aerosol-forming substrate, the aerosol-generating device comprising: a power source providing a DC supply voltage; an oscillation circuit which is fed by the power supply; and a dielectric heating element forming a load capacitor arranged for dielectrically heating the substrate, the dielectric heating element being powered by an oscillating voltage from the oscillating circuit. The oscillation frequency is selected to exceed 100 MHz and less than 1.2 GHz, and the DC supply voltage, the oscillation frequency, and the electrode arrangement and capacitance value of the load capacitor are selected such that the average electric field intensity across the electrodes of the load capacitor exceeds 10 V / mm and less than 200 V / mm.

The present invention relates to an aerosol-generating device, and in particular to an aerosol-generating device configured to heat an aerosol-forming substrate by dielectric heating. A power supply is provided; the oscillation circuit comprises a resonance feedback circuit and a switch unit and is powered by the power supply to form a self-oscillation circuit; a dielectric heating element fed by the oscillating circuit, the dielectric heating element being a capacitor for the resonant feedback circuit, the dielectric heating element is arranged for heating the aerosol-forming substrate by dipole rotation when subjected to an alternating electric field induced by the dielectric heating element; a temperature determination unit for measuring a value indicative of a temperature of the aerosol-forming substrate; and a controller for controlling the temperature of the aerosol-forming substrate by changing a parameter or configuration of the aerosol-generating device based on a signal from the temperature determination unit.

To provide a high-frequency dielectric heating method capable of preventing local heating by reducing the concentration of electromagnetic energy at a corner part of a frozen food material even when the frozen food material disposed between electrodes has surface irregularities, and capable of maintaining high heating efficiency of the frozen food material.SOLUTION: There is provided a high-frequency dielectric heating for thawing a frozen food material placed between a pair of electrodes arranged vertically opposite to each other using a high-frequency dielectric heating device including a high frequency power supply that outputs high-frequency power in a MHz band and the pair of electrodes. The method thaws the frozen food material by driving the high-frequency power supply to generate electromagnetic energy between the pair of electrodes in a state in which, with upper surface and lower surface irregularities of the frozen food material being covered with a dielectric body, an upper end of the frozen food material and is substantially flush with an upper end of the dielectric body, and a lower end of the frozen food material is substantially flush with a lower end of the dielectric body.SELECTED DRAWING: Figure 1

Dielectric heating aerosol-generating device with heat sink structure for heat management of switching unit The present invention relates to an aerosol-generating device, and specifically to an aerosol-generating device configured to heat an aerosol-forming substrate by dielectric heating. The present disclosure further relates to an aerosol-generating system comprising an aerosol-generating device and to a method to manufacture an aerosol-generating device. An aerosol-generating device comprises a heating chamber which is arranged to at least partly receive an aerosol-forming substrate, wherein the heating chamber comprises a dielectric heating element, which in operation heats the aerosol-forming substrate by dipole rotation when subjected to an alternating electric field inside the heating chamber, an oscillation circuit comprising a switching unit, wherein the dielectric heating element is fed by the oscillation circuit, a shell forming an inner volume that at least partly encompasses the heating chamber, the shell configured to insulate heat within the inner volume, wherein the switching unit is arranged within the inner volume and in thermal contact with the heating chamber, so that in operation heat losses of the switching unit are for at least a substantial part dissipated into the heating chamber.

A dielectric heating module according to the present disclosure generates an electric field to heat the inside of a cooling space in which a load can be cooled. The dielectric heating module comprises: a heating module having an electrode in a cooling space; a heating control module for performing adjustment so that a load impedance and an output impedance match each other; and a high-frequency control module for outputting a high-frequency voltage. In the dielectric heating module, the heating module and the heating control module are assembled in the cooling space so as to be laterally adjacent to each other. The high-frequency control module is disposed outside the cooling space.

The present invention relates to a dryer using dielectric heating and a control method thereof. The dryer of the present invention comprises: a body; a drum provided inside the body and accommodating an object therein; a fan for circulating air in the drum; a motor for circulating at least one of the drum and the fan; an energy harvester for collecting magnetic energy from a magnetic field formed in the motor; a plurality of electrodes provided in the body to be spaced apart from each other and forming a magnetic field in the drum; a first power controller connected to a commercial power source and the plurality of electrodes; and a second power controller for generating a driving signal by using power supplied from the energy harvester and transmitting the generated driving signal to the first power controller. The first power controller of the dryer according to one aspect converts power supplied from the commercial power source into power having a preset frequency and a preset magnitude on the basis of a driving signal received from the second power controller, and applies the converted power to the plurality of electrodes.

A radio frequency (RF) dielectric heating system includes a solid-state RF power generator, a matching network electrically coupled to the RF power generator, and a dielectric heating applicator electrically coupled to the matching network and including electrodes for applying RF power to a dielectric material. A solid-state RF power generator can include a power supply, an RF power amplifier stage electrically coupled to the power supply, and a control system electrically coupled to and configured to control the RF power amplifier stage. The control system can be configured to regulate an output voltage of the RF power generator to provide a constant RF power generator output current to maintain a constant voltage across the applicator electrodes. Examples of RF power generators and methods for RF dielectric heating are also disclosed.

The present invention relates to an aerosol-generating device, and in particular to an aerosol-generating device configured to heat an aerosol-forming substrate by dielectric heating. The present disclosure provides an aerosol-generating device for dielectrically heating an aerosol-forming substrate. The aerosol-generating device comprises: a power source; the oscillating circuit is powered by the power supply; a dielectric heating element, the dielectric heating element being fed by the oscillating circuit, the dielectric heating element being arranged for dipole rotation to dielectrically heat the aerosol-forming substrate when subjected to an electric field induced by the dielectric heating element; and a controller for controlling heating of the aerosol-forming substrate by changing a parameter or configuration of the aerosol-generating device. The dielectric heating element is shaped such that the opposing electrodes have a variable, preferably increased distance towards each other along a given direction between the two opposing electrodes, wherein the controller is configured to vary the parameter to cause a spatially and temporally varying profile of an electric field intensity in a space or volume for receiving the aerosol-forming substrate along the given direction, wherein the spatially varying profile varies over time in response to a change in a parameter or configuration of the aerosol-generating device.

The present invention relates to an aerosol-generating device, and in particular to an aerosol-generating device for dielectrically heating an aerosol-forming substrate of an aerosol-forming article. The aerosol-generating device includes a power source; and an oscillation circuit, the oscillation circuit comprising: a switching unit; and a resonant oscillation feedback circuit connected between the input and the output of the switching unit, the resonant oscillation feedback circuit comprising a dielectric heating element arranged for dielectrically heating the substrate. In operation, an electrical parameter associated with a capacitance of the dielectric heating element is measured to determine a property of the substrate.

Disclosed is an aerosol-generating device, the aerosol-generating device comprising a body; and a radiation part provided in the main body and formed to provide an insertion space in which an aerosol-generating article is accommodated. The radiation part comprises a sheet-shaped member which extends in the length direction; an antenna surrounding the insertion space, the antenna configured to emit microwaves for dielectrically heating the aerosol-generating article; and a shielding portion surrounding the antenna, the shielding portion being configured to prevent the microwaves from being emitted to the outside of the radiating portion. The radiation portion is configured such that the antenna and the shielding portion are disposed on the sheet so as to be spaced apart from each other in a length direction of the sheet, and the sheet is wound in the length direction.

A heater module (1) for an aerosol-generating device (100) configured to dielectrically heat an aerosol-generating article (10). The heater module (1) comprises a chamber (2) configured to receive at least a portion of an aerosol-generating article (10) to be heated. The heater module (1) comprises a chamber housing (3), the chamber (2) being disposed in the chamber housing (3). The chamber housing (3) comprises a first region (21) having a first material property, and a second region (22) having a second material property. The first material property and the second material property are such that an electric field in the chamber (2) and chamber housing (3) is greater in the chamber (2) at the second region (22) of the chamber housing (3) compared to the electric field in the chamber (2) at the first region (21) of the chamber housing (3).

The invention relates to an aerosol-generating device, and in particular to an aerosol-generating device for dielectrically heating a solid aerosol-forming substrate, the aerosol-generating device comprising: an oscillating circuit having a switching unit and providing an alternating voltage; at least two electrodes connected to the alternating voltage, the at least two electrodes being arranged to form a heating chamber therebetween for removably receiving an aerosol-generating article, the article comprising the solid aerosol-forming substrate; and a controller for controlling the aerosol-generating device such that the substrate located between the two electrodes is dielectrically heated during a period of less than 15 minutes at an average dielectric heating power density in a range between 1 W / cm3 and 25 W / cm3 per volume of substrate material.

A dielectric heating device according to an embodiment may comprise: a power source; a load circuit; a first AC power supply unit connected to the power source; a first impedance matching inductor unit connected to the first AC power supply unit; a second AC power supply unit connected to the power source; a second impedance matching inductor unit connected to the second AC power supply unit; and an impedance matching capacitor unit having one end connected to the first impedance matching inductor unit and the second impedance matching inductor unit and the other end connected to the load circuit.

The present invention provides a dielectric heating aerosol generating structure with comb-type electrodes, which relates to the field of aerosol generation technology and includes an aerosol generating component and an aerosol generating device. The aerosol generating component includes an aerosol generating substrate, a filter tip, and a hollow acetate tube. A sensor is provided in the aerosol generating substrate. The aerosol generating device is provided with a working chamber, and a comb-type electrode is provided in the working chamber. The aerosol generating device is provided with a power supply and a controller, so that when the aerosol generating substrate is inserted into the working chamber, the controller controls the power supply to generate alternating current to power the comb-type electrode, thereby forming an alternating electric field dielectric heating sensor. The present invention has a simple structure and adopts a dielectric heating method to effectively heat the inside and outside of the entire aerosol generating substrate to generate aerosol. The comb-type electrode can guide the insertion and clamping of the aerosol generating component, while having high heating efficiency, and can also promote uniform heat distribution during the dielectric heating process.

The high-frequency dielectric heating adhesive (1A) of the present invention contains a thermoplastic resin (A) and a dielectric filler (B). When the cross-section of the high-frequency dielectric heating adhesive (1A) cut along the thickness direction is observed by scanning electron microscopy, the relationship between the nearest centroid distance Dg of the dielectric filler (B) and the particle size Dn of the dielectric filler (B) satisfies the following mathematical formula (F1): 1.55≤Dg / Dn≤1.85 ···(F1).