111results about "Dielectric heating electrodes" patented technology

An electronic device includes: a housing configured to provide a space capable of receiving an object to be heated; a first electrode and a second electrode for forming an electric field in the space in which the object to be heated is received; and a floating electrode disposed between the first electrode and the second electrode, the floating electrode being positioned inside the object to be heated when the object to be heated is disposed in the space.

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.

According to an embodiment of the present invention, an electrode heating device is provided, comprising: a device housing; an electrode heating element accommodated and arranged inside the device housing, comprising a central conductor, an internal conductor arranged on the inner side of the central conductor and forming a gap, and an external conductor arranged on the outer side of the central conductor and forming a gap; a control board accommodated and arranged inside the device housing, for controlling the heating operation of the electrode heating element by supplying power to the electrodes of the electrode heating element.

An embodiment of the present disclosure may provide an electronic device, the electronic device including: a housing for providing a space capable of receiving an object to be heated; a first electrode and a second electrode for forming an electric field in the space in which the object to be heated is received; and a floating electrode disposed between the first electrode and the second electrode, the floating electrode being positioned inside the object to be heated when the object to be heated is disposed in the space. Various other embodiments may be applied.

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.

The present disclosure relates to an inductor assembly, an impedance matching network, and a system including the inductor assembly. An inductor assembly (100) includes: a fixed element (102) having a central core (104) and a support structure (106) coupled to and projecting outwardly from the central core, each of the support structures having an outer edge (108) having a notched profile with a recess (110) extending toward the central core; and a spiral inductor (112) having a plurality of turns located in the recesses of the at least two support structures. The support structures are spaced equidistantly from each other around the central core by air gaps (308). The inductor assembly can be incorporated into an impedance matching network (1100), and one or more impedance matching networks can be incorporated into a defrost system (100). The impedance matching network can be a single-ended network (1100) or a double-ended network (1300).

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 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.

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.

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

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.

To provide a solid oxide fuel cell capable of increasing the heating efficiency and raising the temperature of an inner structure to a target temperature (an operation temperature) in a short time and with low energy.SOLUTION: A solid oxide fuel cell 100 comprises: an electrolyte ceramic 3; an electrode part 1 that comprises an anode electrode 4 and a cathode electrode 5 sandwiching the electrolyte ceramic 3 from both sides; a metal frame 2 arranged around the electrode part 1 so as to sandwich the electrode part 1 from both sides, being physically in contact with the anode electrode 4 and the cathode electrode 5, respectively; and a power feeding port 7 electrically connected with the metal frame 2 to feed high-frequency power to the metal frame 2. The thickness of the electrode part 1 becomes thinner in a predetermined concentration heating region.SELECTED DRAWING: Figure 1

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 disclosure relates to an induction heating device and a printing system. In an induction heating device, a technology is provided that can suppress the retention of steam generated by heating an object to be heated. The induction heating device comprises: a conveying portion that conveys the object to be heated; an electrode unit having a first electrode and a second electrode, the first electrode and the second electrode being opposed to the object to be heated conveyed in a first direction in a second direction intersecting the first direction, and being applied with an AC voltage; and a first metal cover portion that surrounds the electrode unit. The first cover portion comprises: 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 opening portions that are different from the first insertion port and the first delivery port.

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

To provide a solid oxide fuel cell capable of increasing the heating efficiency and raising the temperature of an inner structure to a target temperature (an operation temperature) in a short time and with low energy.SOLUTION: A solid oxide fuel cell 100 comprises: an electrolyte ceramic 3; an electrode part 1 that comprises an anode electrode 4 and a cathode electrode 5 sandwiching the electrolyte ceramic 3 from both sides; a metal frame 2 arranged around the electrode part 1 so as to sandwich the electrode part 1 from both sides, being physically in contact with the anode electrode 4 and the cathode electrode 5, respectively; and a power feeding port 7 electrically connected with the metal frame 2 to feed high-frequency power to the metal frame 2. The shapes, sizes and materials of the electrode part 1 and the metal frame 2 are selected so that the resonance frequency of the electrode part 1 becomes a target resonance frequency. The transmission frequency from a high-frequency oscillator 8 is adjusted to be the target resonance frequency.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.