63results about "Dielectric heating circuits" patented technology

A removable container (21) for products to be cooked for use in a PEF cooking appliance (P) comprises at least two PEF electrodes (4, 5), between which products to be cooked (G) can be introduced and to which PEF signals pulsed with alternating polarity can be applied, at least one sensor (6, 7) and a sensor circuit (14), comprise an energy supply device (16) without a battery and DC-isolated from the PEF cooking appliance (P), an evaluation circuit (10) connected to the at least one sensor (6, 7) and the energy supply device (16), and a data transmission device (11) connected to the evaluation circuit (10) and the energy supply device (16), said data transmission device being set up to transmit data received from the evaluation circuit (10) to the PEF cooking appliance (P) in a non-electrical manner. A PEF cooking appliance (P) comprises a PEF signal generator (SG) for generating PEF signals polarized in a commutating manner, a receiving space (AR) for the container (21) for products to be cooked and a data transmission device (PS) for receiving data of the data transmission device (11) of the container (21) for products to be cooked. The invention can be applied particularly advantageously to domestic appliances.

A hair styling appliance is described having a pair of electrodes, a chamber located between the electrodes for receiving a section of hair, and a drive unit for applying an alternating voltage to the electrodes to heat the hair dielectrically. The electrodes have a fixed spacing.

A dryer is provided. The dryer includes an alternating current (AC) power supply configured to supply an input voltage, a rectifier configured to rectify the supplied input voltage, a power amplifier configured to amplify the rectified input voltage to provide an output voltage, a plurality of electrodes to which the output voltage is applied, a matching circuit, connected between the power amplifier and the plurality of electrodes, configured to correct a waveform of the output voltage provided from the power amplifier, memory storing instructions, and at least one processor, wherein the instructions, when executed by the at least one processor individually or collectively, cause the dryer to obtain a magnitude of the output voltage provided from the power amplifier, and detect a power value corresponding to the rectified input voltage, based on the magnitude of the output voltage provided from the power amplifier being less than or equal to a defined reference voltage.

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.

A control circuitry (11) comprises an adjustable capacitor (C1), and a bias source (111) configured to apply a bias voltage (V2) to said adjustable capacitor (C1) to adjust a capacitance value of the adjustable capacitor (C1). Such a control circuitry may for example be part of a sealing device (1) to seal a medical tubing (2), the sealing device (1) comprising a receptacle (100) to receive said medical tubing (2), the receptacle (100) comprising an electrode arrangement for causing a heat action on the tubing (2).

To provide a technique in which in a dielectric heating device, the amount of heating of an object to be heated is adjusted according to the degree of dryness of the object to be heated without the use of a sensor for measuring a water content.SOLUTION: A dielectric heating device comprises: an electrode unit that has a first electrode and a second electrode facing an object to be heated and heats the object to be heated; a voltage application unit that applies AC voltage to the first electrode and the second electrode; a current value detection unit that detects the current value of AC current flowing in the electrode unit; a phase difference detection unit that detects the phase difference between the AC voltage and the AC 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 voltage application unit based on the impedance to control output of AC power output to the electrode unit.SELECTED DRAWING: Figure 2

A high-frequency heating apparatus according to the present disclosure includes a first electrode (11), a second electrode (12), a high-frequency power supply (30), a position adjuster (20), a detector (50), and a controller (60). The second electrode (12) is disposed facing the first electrode. The high-frequency power supply (30) supplies a high-frequency power to the first electrode. The position adjuster (20) adjusts a distance between the first electrode (11) and the second electrode (12). The detector (50) detects a reflected power from the first electrode (11) toward the high-frequency power supply (30). The controller (60) controls the position adjuster (20) based on the reflected power. In this embodiment, a heating target can be heated efficiently.

According to an embodiment, an aerosol-generating device includes: a first circuit board on which a power source and a processor are mounted; a second circuit board which is spaced apart from the first circuit board and on which an RF signal generation circuit for generating an RF signal by using power supplied from the power source, and at least one amplifier for amplifying the generated RF signal are mounted; and a radiator which heats an aerosol-generating article by radiating the amplified RF signal in the form of an electromagnetic wave to an insertion space into which the aerosol-generating article is inserted, wherein the processor may be configured to control the RF signal generation circuit and the at least one amplifier.

A drying apparatus is provided. The drying apparatus includes a chamber, a first electrode and a second electrode arranged in the chamber, and facing each other and spaced apart from each other, a power supply configured to apply a voltage to the first electrode and the second electrode, memory, comprising one or more storage media, storing instructions, and one or more processors communicatively coupled to the power supply, the first electrode, the second electrode, and the memory, wherein the second electrode includes a first sub-electrode and a second sub-electrode that are arranged adjacent to each other in a direction parallel to the first electrode, and wherein the instructions, when executed by the one or more processors individually or collectively, cause the drying apparatus to control the power supply to apply a first voltage to the first sub-electrode and to apply the first voltage or a second voltage to the second sub-electrode, the second voltage having a different phase from the first voltage.

A drying apparatus includes: a chamber; a first electrode and a second electrode arranged in the chamber, and facing each other and spaced apart from each other; a power supply configured to apply a voltage to the first electrode and the second electrode; and a controller configured to control the power supply, wherein the second electrode includes a first sub-electrode and a second sub-electrode that are arranged adjacent to each other in a direction parallel to the first electrode, and the controller is configured to control the power supply to apply a first voltage to the first sub-electrode and to apply the first voltage or a second voltage to the second sub-electrode, the second voltage having a different phase from the first voltage.

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.

A control method, apparatus, device for a radio frequency thawing device, and a storage medium. The radio frequency thawing device includes: an RF power amplification loop (102) configured for outputting an RF power to a tuning loop (103), and the tuning loop (103) configured for an impedance matching. The method includes: identifying a food material in the radio frequency thawing device to obtain a food material information (201); determining a target RF power and an initial thawing time of the radio frequency thawing device according to the food material information (202); adjusting the initial thawing time according to a mismatch frequency or reflection coefficient of the tuning loop to obtain a target thawing time, the mismatch frequency being used to characterize a frequency degree at which the tuning loop is triggered for impedance matching, the reflection coefficient being used to characterize a power consumption degree of the RF power amplification loop (203); thawing the food material according to the target RF power and the target thawing (204).

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.

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.

An aerosol-generating device according to one embodiment of the present application comprises: an oscillation unit for generating microwaves; a resonance unit which includes an accommodation space for accommodating an aerosol-generating article, and which resonates the microwaves so as to heat the aerosol-generating article; a sensor unit for identifying the state of a medium of a tobacco rod included in the aerosol-generating article; and a processor for adjusting the frequency of the microwave according to the identified state of the medium. When the state of the medium is greater than or equal to a preset threshold value, the processor controls, during a preheating period, that the oscillation unit generates the microwaves having a first frequency corresponding to moisture contained in the medium, and controls, during a smoking period, that the oscillation unit generates the microwave having a second frequency corresponding to glycerin contained in the medium.

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.

An embodiment of the present disclosure relates to an electronic device including split electrode structures for beverage sterilization. According to an embodiment of the present disclosure, an electronic device capable of accommodating at least one container is provided, the electronic device comprising: a conductive plate configure to form an electric field when a container is accommodated at a designated location; and a conductive member, which is connected to the conductive plate and the length of which is adjustable so as to adjust the position of the conductive plate, wherein the conductive plate is split into a plurality of conductive plates by a gap formed along a direction parallel to the longitudinal cross-section of the container, and based on when the container is accommodated at the designated position, the plurality of conductive plates form an electric field in the transverse cross-sectional direction of the container. Various other embodiments may also be applied.

An aerosol-generating device (120) for dielectrically heating an aerosol-forming substrate (110) is provided. The device (120) includes an oscillating circuit (150) and an electrode arrangement coupled to the oscillating circuit. The electrode arrangement forms a load capacitor for dielectrically heating the aerosol-forming substrate. The electrode arrangement includes first electrodes that intersect each other.

According to one embodiment, an aerosol-generating device pack may include: a power source; a first circuit board on which a processor is mounted; a second circuit substrate disposed to be spaced apart from the first circuit substrate, and on which is mounted a radio frequency (RF) signal generation circuit for generating an RF signal using power supplied from the power source, and at least one amplifier for amplifying the RF signal using the power supplied from the power source, the at least one amplifier is used for amplifying the generated RF signal; and a radiation section that radiates the amplified RF signal in the form of an electromagnetic wave into an insertion space into which an aerosol-generating article is inserted to heat the aerosol-generating article, in which the processor may be configured to control the RF signal generation circuit and the at least one amplifier.

Provided is an aerosol-generating device (120) for combined dielectric and inductive heating of an aerosol-forming substrate. The device (120) comprises: an electrode arrangement (130, 135) that forms a load capacitor CL for dielectrically heating an aerosol-forming substrate (110) in the vicinity of the electrode arrangement (130, 135); and an inductor L positioned in proximity with the electrode arrangement (130, 135). The inductor L is configured to form an inductive coupling with the electrode arrangement (130, 135) and induce a current in the electrode arrangement (130, 135) for heating the aerosol-forming substrate (110).

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 invention relates to a temperature-control assembly (1) for a microelectric system and to a microelectric system having such a temperature-control assembly (1). The temperature-control assembly (1) comprises a closed channel system (3) which comprises at least one channel (4) for guiding an electrically and thermally conductive medium (5) and is thermally coupled to at least one microelectric system object of which the temperature is to be controlled. The assembly also comprises a magnetohydrodynamic pump (7) which has a plurality of magnetohydrodynamic modules (10), each module having an electrode device with two electrodes and a magnet device that generates a magnetic field. At least two magnetohydrodynamic modules (10) are designed as pump modules (10A, 10B) and are electrically connected in series. In each of the pump modules (10A, 10B) a first electrode of the electrode device introduces an electric current flow having a predefined current density into the electrically and thermally conductive medium (5) at at least one channel portion, and a second electrode of the electrode device conducts the electric current flow out of the electrically and thermally conductive medium (5) at the at least one channel portion. This causes the electrically and thermally conductive medium (5) guided in the closed channel system (3) to interact with the introduced electric current flow and with the generated magnetic field in such a way that a Lorentz force is generated which specifically accelerates the electrically and thermally conductive medium (5) in the at least one channel portion, resulting in a pressure build-up that causes a desired volume flow of the electrically and thermally conductive medium (5) through the at least one channel (4) of the closed channel system (3). The volume flow of the electrically and thermally conductive medium (5) controls the temperature of the at least one object of which the temperature is to be controlled. The electrically and thermally conductive medium (5) transfers heat to the at least one object of which the temperature is to be controlled during a heating process or absorbs heat from the at least one object (9) of which the temperature is to be controlled during a cooling process.

The invention discloses a pneumatic thermal composite anti-icing and deicing device and a control method thereof, and relates to the technical field of plasmas, the pneumatic thermal composite anti-icing and deicing device comprises a composite heating film, the composite heating film comprises an insulating substrate layer, a functional heating layer, a lower electrode array, an upper electrode array and a surface protection layer, and the pneumatic thermal composite anti-icing and deicing device further comprises an airborne anti-icing and deicing power supply; and a plasma jet disturbance assembly is arranged at an easy-to-freeze area at the front edge of the device component. The functional heating layer provides stable and uniform substrate heating, and ensures that the whole protective surface is maintained in a non-icing temperature range; under the extreme icing condition, the composite working mechanism shows obvious advantages. The electrothermal film is responsible for melting an ice-film interface and reducing the adhesion strength; and the plasma-induced ion wind provides continuous pneumatic shear force to promote the overall stripping of the ice layer.

The invention relates to a partition-free self-adaptive induction cooker heating control circuit and method.The control circuit comprises an inversion main loop module, a main control module and a plurality of resonance heating modules arranged in parallel, and the alternating current output end of the inversion main loop module is connected with the resonance input end of each resonance heating module; a control signal input end of the inversion main loop module is connected with a first control signal output end of the main control module; the resonance heating module comprises a resonance unit, a sampling unit and a switch conduction unit which are sequentially connected in series, and the sampling signal output end of the sampling unit is connected with the sampling signal input end of the main control module, so that the main control module controls the conduction state of the inversion main loop module and / or the switch conduction unit according to resonance state data; the coil area only covered by the cookware can participate in resonance heating, self-adaptive selection and accurate energy distribution of the heating area are achieved, and the problem that the position of the cookware is limited due to a traditional fixed wire coil layout is solved.

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).

A cooking apparatus according to an embodiment may comprise: first, second, third, and fourth electrodes spaced apart from each other between a housing and a cooking chamber; an RF power supply unit that supplies RF power to each of the first electrode, the second electrode, the third electrode, and the fourth electrode; a plate detachably provided in the cooking chamber and partitioning the inside of the cooking chamber into a plurality of accommodation spaces in which an electric field is generated by at least one of the first electrode, the second electrode, the third electrode, and the fourth electrode; and a processor configured to adjust the RF power supplied from the RF power supply to at least one of the first electrode, the second electrode, the third electrode, or the fourth electrode, such that an independent electric field is generated in each of the plurality of accommodation spaces partitioned by the plate.