61results about "Dielectric heating electrodes" patented technology

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.

Disclosed herein is a hair styling appliance that includes electrodes and a control system that, during operation, energises the electrodes to heat hair dielectrically. A shielding bounds the electrodes to block an electromagnetic field that is generated by the electrodes when energised. Further, a sensor assembly is located outside of the shielding, and the sensor assembly is used to sense a property of hair for the hair styling appliance.

A base disposed in a plasma processing chamber. An electrostatic chuck disposed on an upper portion of the base, the electrostatic chuck including a first part and a second part. A first heater electrode layer group including at least one heater electrode layer disposed in the first part. A second heater electrode layer group including at least one heater electrode layer disposed in the second part. A power source is electrically connected to the first heater electrode layer group and the second heater electrode layer group. A controller configured to periodically and sequentially supply DC current from the power source to heater electrode layers included in the first heater electrode layer group and heater electrode layers included in the second heater electrode layer group.

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 disclosure relates to an induction heating device and a liquid ejection system. A technique is provided in which a liquid adhering to a medium can be uniformly dried without using a sensor that measures the water content in the induction heating device. The induction heating device includes a first heater that has a first electrode and a second electrode that oppose the medium to which a liquid containing water is adhered, and a first coil that is electrically connected in series to the first electrode, and that heats the liquid to dry it, and a voltage application unit that applies an alternating voltage of a predetermined drive frequency to the first electrode and the second electrode. The first heater is configured such that a difference between a resonance frequency of the first heater and the drive frequency in a case where the water content of the medium is in a first range is smaller than a difference between a resonance frequency of the first heater and the drive frequency in a case where the water content is in a second range that is less than the first range, and the amount of heat in the case where the water content is in the first range is greater than the amount of heat in the case where the water content is in the second range.

The present invention relates to a laundry drying machine including a cabinet, a drum rotatably installed in the cabinet to accommodate articles to be dried, and an electric field generator spaced apart from the drum and generating an electric field inside the drum when supplied with power. The electric field generator includes a positive electrode spaced apart from the drum, fixed to the cabinet, and applying an electric field to the articles to be dried accommodated in the drum, a power supply unit supplying power to the positive electrode, and a matcher provided in the cabinet and matching a power source impedance with a load side impedance. In a state where the power is stopped being applied to the positive electrode, the drum rotates at a preset agitating rotational speed, and the agitating rotational speed is greater than 0 and less than 50 rpm, thereby having an effect that the articles to be dried can slide along an inner circumferential surface of the drum without falling.

To provide a technique capable of suppressing retention of steam generated by heating an object to be heated in a dielectric heating device.SOLUTION: A dielectric heating device includes a conveying unit that conveys an object to be heated, an electrode unit including a first electrode and a second electrode to which an alternating voltage is applied, facing in a second direction intersecting the first direction with respect to the object to be heated conveyed in the first direction, and a metal first cover portion surrounding the electrode unit. The first cover portion includes a first insertion port for inserting the object to be heated into the first cover portion, a first delivery port for delivering the object to be heated to the outside of the first cover portion, and a plurality of first openings different from the first insertion port and the first delivery port.SELECTED DRAWING: Figure 5

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 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.

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 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 invention relates to a method (10) for operating a heating means (8) of a cooking appliance (1). The heating means (8) is made of a conductive material, and the heating means (8) lies opposite another conductive element (9) of the cooking appliance (1) such that a cooking chamber (6) of the cooking appliance (1) extends between the heating means (8) and the other conductive element (9). According to one aspect of the invention, in an alternating manner, an alternating voltage is applied to or generated on the heating means (8) across from the other conductive element (9) in order to generate an electromagnetic alternating field (11) which passes through the cooking chamber (6) and a current is applied to or generated on the heating means in order to heat the heating means (8) by means of ohmic losses (12). The invention additionally relates to a corresponding cooking appliance (1) which is designed to carry out such a method.

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 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.

To provide a high frequency defrosting device that improves the reliability and maintainability of the entire equipment and suppresses thawing unevenness of an object to be thawed.SOLUTION: A high frequency defrosting device according to the present invention includes an upper electrode 51 connected to a high frequency power supply 20 and arranged on the wall surface of a heating chamber 60, and a lower electrode 52 connected to the high frequency power supply 20 and arranged on the wall surface of the heating chamber 60 so as to face the upper electrode 51. Between the upper electrode 51 and the lower electrode 52, an intermediate electrode 53 is provided for transmitting and receiving the electric field generated between the upper electrode 51 and the lower electrode 52. The intermediate electrode 53 is detachable from the heating chamber 60.SELECTED DRAWING: Figure 1

The present invention suppresses the occurrence of surface temperature distribution in an object to be thawed. A thawing machine according to the disclosure comprises: a housing; a conductor partition wall provided within the housing so as to form a high-frequency space in which to confine high-frequency waves; a thawing chamber partition wall provided within the conductor partition wall so as to form a thawing chamber inside which an object to be thawed is stored; an electrode device disposed in a first space between the conductor partition wall and the thawing chamber partition wall; and a heat source disposed in a second space between the housing and the conductor partition wall. The electrode device comprises: a first electrode that radiates high-frequency waves into the thawing chamber; and a second electrode, which is a ground electrode, disposed on the opposite side of the thawing chamber as viewed from the first electrode. The thawing chamber partition wall comprises: a first portion facing the first electrode and formed by a first member that allows the high-frequencies to pass through; and a second portion located farther away from the electrode device than the first portion and formed by a second member having higher thermal conductivity than the first member.

Disclosed herein is a hair styling appliance that include electrodes and a control system that energises the electrodes to heat hair dielectrically. A sensor assembly is used to sense a property of the hair for the hair styling apparatus. During operation, the control system be used to suspend energisation of the electrodes during sensing of the property of the hair by the sensor assembly.

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.

To reduce uneven heating and defrost frozen objects in a short time.SOLUTION: A high-frequency defrosting device includes a flat upper electrode and a flat lower electrode arranged in parallel. Multiple meanderline electrodes, formed in a meanderline pattern with the center of the upper electrode or the center of the lower electrode as the symmetry point, are arranged in point symmetry on each of the upper electrode and lower electrode. One end of each meanderline electrode is electrically connected to the upper electrode or the lower electrode, respectively. The other end of the meanderline electrode, positioned centrally on the upper electrode or the lower electrode, is not electrically connected to the upper electrode or the lower electrode. The electrical length of the meanderline electrodes is formed such that it is an integer multiple of one-quarter of the wavelength λ of the RF signal output by the high-frequency power source.SELECTED DRAWING: Figure 1

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.

A substrate support assembly includes a heater plate including a dielectric material; the heater electrode is embedded in the heater plate; a set of distributed purge channels formed within the heater plate, where the set of distributed purge channels provides a set of gas flow paths to equalize gas flow from within the heater plate and direct gas flow in a direction below the heater plate; the grounding electrode is embedded in the heater plate; and a radio frequency (RF) network embedded within the board.

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.

Subject of the present invention is washing machine (20) which comprises a water supply portion (230) to supply water; a detergent supply portion (260) to supply a detergent jet portions (234) to jet a wash liquid comprising the water and the detergent a power supply portion (500) to supply an alternating current (AC) power; and an electric field forming portion (1100) comprising a first electrode portion (1110) and a second electrode portion. The electric field forming portion is configured to receive AC power from the power supply portion and form an electric field between the first electrode portion (1110) and the second electrode portion (1120) to heat the supplied wash liquid, wherein the first electrode portion (1110) and the second electrode portion (1120) of the electric field forming portion are disposed in parallel to form an electric field in a first direction.

To uniformly heat a medium in a dielectric heating device.SOLUTION: A dielectric heating device 100 comprises: a conveying section 320 that conveys a medium; electrode units 20 that each face the medium in a first direction, have a first electrode 30 and a second electrode 40 applied with an AC voltage, and heat the medium by a dielectric heating method; and a control section that controls the conveying section. The second electrode is arranged to surround the first electrode when seen along the first direction. The first electrode has a first electric conductor 31, and a second electric conductor 32 protruding toward the medium from the first electric conductor. The second electric conductor is covered by the first electric conductor when they are projected on a plane perpendicular to the first direction.SELECTED DRAWING: Figure 1

To provide a small-size electrode for dielectric heating excellent in heating efficiency and less uneven heating with a low cost, and a high-frequency dielectric heating device.SOLUTION: The electrode for dielectric heating dielectrically heats an object to be heated by the electric field generated between upper and lower electrodes by applying a high-frequency voltage between the upper and lower electrodes of a parallel plate. In the electrode for dielectric heating, a spiral-shaped electrode is provided on either or both of the lower surface of the upper electrode and the upper surface of the lower electrode, and the spiral-shaped electrode is connected to the parallel plate electrode at the outer peripheral end, and the inner peripheral end side is an open end.SELECTED DRAWING: Figure 1

The present invention relates to a laundry drying machine including a cabinet, a drum rotatably installed in the cabinet to accommodate articles to be dried, and an electric field generator spaced apart from the drum and generating an electric field inside the drum when powered. The electric field generator includes a positive electrode spaced apart from the drum, fixed to the cabinet and applying an electric field to the articles to be dried accommodated in the drum, a power supply unit supplying power to the positive electrode, and a matcher provided in the cabinet and matching a source impedance with a load side impedance. When reflectivity of the electric field exceeds a predetermined ratio, a rotational speed of the drum is reduced to reduce the reflectivity of the electric field, thus having an effect of preventing damage to devices such as the matcher due to reflected waves.

An RF defrosting drawer that has a pair of electrodes for heating a food item. One or both of the electrodes may be moveable and the compartment may have a venting mechanism for removing the moisture generated by the heating of food items. The RF defrosting drawer can be positioned inside the refrigerator compartment of a refrigerator.