74 results about "Dielectric heating" patented technology

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.

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.

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.

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 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.

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.

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).

Disclosed is an aerosol-generating device. The aerosol-generating device of the present disclosure comprises: a body providing an insertion space in which an aerosol-generating article is accommodated; an antenna for radiating, into the insertion space, microwaves for dielectrically heating the aerosol-generating article; and a processor, wherein the processor can control the depth to which the microwaves penetrate into the aerosol-generating article by changing the frequency band of the microwaves radiated from the antenna.

Provided is a high-frequency dielectric heating adhesive sheet (1A) having an adhesive layer (10) containing at least a thermoplastic resin (A) and a dielectric material that generates heat by application of a high-frequency electric field, wherein the adhesive layer (10) contains, as the thermoplastic resin (A), a silane-modified polyolefin, and the thermoplastic resin (A) has an MFR at 190°C of 2 g / 10 min or more and 50 g / 10 min or less.

Disclosed is an aerosol-generating device. The aerosol-generating device of the present disclosure comprises: a body; and a radiation unit disposed inside the body and providing an insertion space in which an aerosol-generating article is accommodated, wherein the radiation unit comprises: an antenna that wraps around the insertion space and emits microwaves for dielectrically heating the aerosol-generating article; and a hollow dielectric disposed within the antenna to support same and providing the insertion space therein, and the dielectric may include at least one of quartz, glass, ceramic, polyimide, and polytetrafluoroethylene.

The dielectric heating device includes: two heating electrodes spaced apart and facing each other; a heating chamber disposed between the two heating electrodes and serving as a space for placing an object to be heated; a high-frequency power supply that supplies high-frequency power to the two heating electrodes such that the phase difference between the voltages applied to the two heating electrodes is 180°; and a control unit that individually adjusts the voltages applied to the two heating electrodes from the high-frequency power supply.

Disclosed is an aerosol-generating device. The aerosol-generating device of the present disclosure may comprise: a body providing an insertion space in which an aerosol-generating article is accommodated; and an antenna disposed adjacent to the insertion space and for radiating, into the insertion space, microwaves for dielectrically heating the aerosol-generating article, wherein the antenna may include carbon nanotubes.

An aerosol-generating device (120) for dielectrically heating an aerosol-forming substrate (110) is provided. The apparatus (120) includes an oscillation circuit (150) including a switching unit configured for phase inversion operation and a feedback loop connected across the switching unit. The feedback loop comprises two electrical contacts (160, 165) configured to be interconnected with an electrode arrangement forming a load capacitor CL for dielectrically heating the aerosol-forming substrate (110). The feedback loop is configured to perform a resonant oscillation operation. The feedback loop comprises a phase shift component configured to provide a 180 DEG phase shift between an output signal of the switching unit and an input switching signal of the switching unit above a resonant frequency of the oscillating circuit (150).

This invention provides a circuit device for a cooking apparatus that can heat and cook multiple foods simultaneously using a dielectric heating method. [Solution] The system consists of a box-shaped cooking device 1, an input device 20 positioned above the cooking device and comprising various center devices 22, an operating device 23, and an imaging device 21, a control device positioned below the input device and comprising a main control device 11, an image recognition device 12, a storage device 15, a heating control device 13, and an advertising display control device 14, an output device 30 positioned below the control device, heating devices 31a to 31d comprising a plurality of microwave sources positioned below the output device, an advertising display device 32 positioned next to the output device and receiving the output of the advertising display control device as input, an information display device 33 positioned next to the advertising display device and receiving display information output from the main control device as input, communication devices 40 and 41 having a sub-communication unit and receiving data from the main control device, and an external system 50 having an external server positioned outside the cooking device for communication exchange.

The present invention provides an aerosol generating device for generating aerosols by heating an aerosol-forming substrate. [Solution] The apparatus comprises an electromagnetic field generator and a resonant chamber. The electromagnetic field generator is configured to generate radio frequency (RF) electromagnetic radiation having a predetermined frequency composition. The resonant chamber has a peripheral wall configured to be substantially opaque to RF electromagnetic radiation within the resonant chamber. A packing material is arranged inside the resonant chamber so as to surround a substrate recess defined within the resonant chamber. The substrate recess is configured to receive an aerosol-forming substrate. The electromagnetic field generator is connected to the resonant chamber to transmit the RF electromagnetic radiation generated by the electromagnetic field generator to the resonant chamber. The packing material has a relative permittivity greater than 1.

To provide a system and method for generating an aerosol from an aerosol-forming substrate.SOLUTION: There is provided an aerosol-generating device for heating an aerosol-forming substrate to generate an aerosol, the aerosol-generating device comprising: a substrate cavity (28 / 49 / 58 / 78 / 88 / 108) configured to receive an aerosol-forming substrate; and an electromagnetic field generator (23 / 43 / 53 / 73 / 83 / 103) configured to generate a radio frequency (RF) electromagnetic field in the substrate cavity (28 / 49 / 58 / 78 / 88 / 108), the electromagnetic field generator (23 / 43 / 53 / 73 / 83 / 103) comprising a solid state RF transistor. The device can give rise to dielectric heating of the aerosol-forming substrate (36).SELECTED DRAWING: Figure 2

The invention discloses a method, a system and equipment for reinforcing soil in a cold region. The method for reinforcing the soil in the cold region comprises the steps that a complex microbial inoculant suspension is obtained, the complex microbial inoculant suspension comprises multiple strains which are subjected to low-temperature domestication and have different temperature adaptation characteristics, and the multiple strains at least comprise a first urease-producing strain and a second urease-producing strain; magnetic nano-particles in the magnetic nano-particle suspension are subjected to surface modification so as to enhance biocompatibility and dispersion stability; injecting the complex microbial inoculant suspension and the magnetic nanoparticle suspension into the soil; obtaining the state of the soil; according to a reinforcement target and the state of the soil, a low-frequency alternating magnetic field is applied to the magnetic nanoparticles, so that the magnetic nanoparticles are directionally enriched, and the soil is subjected to dielectric heating through a radio-frequency electromagnetic field, so that the biological activity of strains in the complex microbial inoculant suspension is activated or enhanced. By adopting the method, the reinforcing effect of the soil can be effectively improved.

A high-frequency-dielectric-heating-adhesive-sheet includes: a first adhesive layer containing a first thermoplastic resin; a second adhesive layer containing a second thermoplastic resin; and an intermediate layer, a ratio DPM / DP1 of dielectric property DPM of the intermediate layer to dielectric property DP1 of the first adhesive layer and a ratio DPM / DP2 of the dielectric property DPM of the intermediate layer to dielectric property DP2 of the second adhesive layer are each less than one, and the dielectric property DP1, the dielectric property DP2, and the dielectric property DPM are values of dielectric property (tanδ / ε′r) of the first adhesive layer, the second adhesive layer, and the intermediate layer, respectively. tanδ denotes a dielectric dissipation factor at 23 degrees C. and a frequency of 40.68 MHz and ε′r denotes a relative permittivity at 23 degrees C. and the frequency of 40.68 MHz.