Abstract: An induction heater for a cook top comprising: —a first electrically insulating sheet (1); —a second electrically insulating sheet (2); —one or more inductors (5) arranged on a same plane between the first sheet (1) and the second sheet (2), each inductor (5) comprising a single electrically conductive track defining a flat spiral coil provided with a plurality of turns (15); wherein the thickness (t) of each inductor (5) is comprised between 100 and 500 ?m; and wherein the ratio between the distance (g) between the consecutive turns (15) of each inductor (5) and the thickness (t) of each inductor (5) is lower than or equal to 1.5.

Abstract: A microwave heating device includes radiating portions adapted to radiate microwaves to the heating chamber and is operated according to operational configurations that differ in frequency or in phase shift(s) between the radiated microwaves. A learning procedure is executed by sequentially operating the radiating portions in several operational configurations. Energy efficiency data are calculated for those operational configurations. An operating frequency is selected based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency is taken as a reference. A heating procedure is executed by sequentially operating the radiating portions in operational configurations having the selected operating frequency and respective phase shift(s) chosen around the respective phase shift(s) of the reference operational configuration.

Abstract: An induction hob includes a main body with an upper main surface on which in use at least one pan to be heated can be placed, and a lower main surface. The induction hob also includes at least one inductor coupled to the main body at the lower main surface, and a flexible body, fixed to the lower main surface. The flexible body has alternating first, electrically insulating layers and second layers each including at least one electrically conductive track. The inductor has a plurality of such electrically conductive tracks, which are positioned at different second layers and are electrically connected to each other in series and/or parallel to form a plurality of loops.

Abstract: An induction heater for a cook top comprising:—a first electrically insulating sheet (1);—a second electrically insulating sheet (2);—one or more inductors (5) arranged on a same plane between the first sheet (1) and the second sheet (2), each inductor (5) comprising a single electrically conductive track defining a flat spiral coil provided with a plurality of turns (15); wherein the thickness (t) of each inductor (5) is comprised between 100 and 500 ?m; and wherein the ratio between the distance (g) between the consecutive turns (15) of each inductor (5) and the thickness (t) of each inductor (5) is lower than or equal to 1.5.

Abstract: A countertop (1) for kitchen furniture comprising a hob (12) with at least one magnetic inductor (14) designed to be used for cooking food and located underneath at least one cooking area (16) of said hob (12), said hob (12) further comprising at least one removable protection element (18) designed to be positioned on top of said at least one cooking area (16). The hob (12) is provided with at least one safety device (20) designed to ensure correct positioning of the at least one removable protection element (18).

Abstract: An induction heater for a cook top comprising: —a first electrically insulating sheet (1); —a second electrically insulating sheet (2); —one or more inductors (5) arranged on a same plane between the first sheet (1) and the second sheet (2), each inductor (5) comprising a single electrically conductive track defining a flat spiral coil; —at least one magnetic flux concentrator (4) arranged on a plane under the second sheet (2); —a metallic heat sink plate (3) arranged under the at least one magnetic flux concentrator (4), adapted to dissipate the heat produced by the one or more inductors (5).

Abstract: An apparatus for defrosting or cooking foods, the apparatus including both radio frequency dielectric heating means and an induction heating means. The radio frequency dielectric heating means includes at least two electrodes positioned at a treatment zone, and a device for applying, between the electrodes, a difference in electric potential which is variable with a frequency between 1 MHz and 300 MHz. The induction heating means is electromagnetically coupled to at least one of the electrodes which is at least partly made of ferromagnetic material, such that the electrode transmits heat to the food.

Abstract: A device for the induction heating of a billet of metal of high electrical conductivity has: a tubular body supporting a plurality of permanent magnets arranged inside the tubular body, angularly spaced apart from each other and arranged so as to be alternated with opposite polarities. The device also has a support for the billet that is arranged inside the tubular body and faces the magnets. The device also has a motor adapted to rotate the tubular body with respect to the billet in order to induce currents in the billet that circulate within the metal material, obtaining the heating of the billet by the Joule effect. An integral cooling system for the permanent magnets is provided, this being carried by the tubular body and suitable for feeding cooling air flows between adjacent permanent magnets.

Abstract: This disclosure relates to a microwave heating device and a method for operating a microwave heating device, in particular to heat at least one product inside a heating chamber of the device. The microwave heating device comprises at least two radiating portions that are adapted to radiate microwaves to the heating chamber and can be operated according to a plurality of operational configurations that differ in frequency and/or in phase shift(s) between the radiated microwaves. A learning procedure can be executed by sequentially operating the at least two radiating portions in several operational configurations. Energy efficiency data are calculated for those operational configurations. An operating frequency can be selected, the selection being based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency may be taken as a reference.

Abstract: A microwave heating device and a method for operating a microwave heating device to heat a product inside a heating chamber includes at least two radiating portions that are adapted to radiate microwaves to the heating chamber and can be operated according to a plurality of operational configurations that differ in frequency or phase shift(s) between the radiated microwaves. A learning procedure can be executed by sequentially operating the radiating portions in several operational configurations for which energy efficiency data are calculated. An operating frequency can be selected via an algorithm that optimizes a mathematical function based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency may be taken as a reference.

Abstract: A microwave heating device includes radiating portions adapted to radiate microwaves to the heating chamber and is operated according to operational configurations that differ in frequency or in phase shift(s) between the radiated microwaves. A learning procedure is executed by sequentially operating the radiating portions in several operational configurations. Energy efficiency data are calculated for those operational configurations. An operating frequency is selected based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency is taken as a reference. A heating procedure is executed by sequentially operating the radiating portions in operational configurations having the selected operating frequency and respective phase shift(s) chosen around the respective phase shift(s) of the reference operational configuration.

Abstract: An induction hob includes a main body with an upper main surface, on which in use at least one pan to be heated can be placed, and a lower main surface. The induction hob also includes at least one inductor coupled to the main body at the lower main surface, and a flexible body, fixed to the lower main surface. The flexible body has alternating first, electrically insulating layers and second layers each including at least one electrically conductive track. The inductor has a plurality of such electrically conductive tracks, which are positioned at different second layers and are electrically connected to each other in series and/or parallel to form a plurality of loops. A method for making the induction hob is also disclosed.

Abstract: An apparatus for defrosting and/or cooking foods, comprising both radio frequency dielectric heating means (15) and induction heating means (21); the radio frequency dielectric heating means (15) comprises at least two electrodes (16) positioned at a treatment zone (4), and a device (17) for applying between the electrodes (16) a difference in electric potential which is variable with a frequency of between 1 MHz and 300 MHz, while the induction heating means (21) are electromagnetic ally coupled to at least one of the electrodes (16) which is at least partly made of ferromagnetic material, for, in use, heating it in such a way that the electrode (16) transmits heat to the food (5).

Abstract: This disclosure relates to a microwave heating device and a method for operating a microwave heating device, in particular to heat at least one product inside a heating chamber of the device. The microwave heating device comprises at least two radiating portions that are adapted to radiate microwaves to the heating chamber and can be operated according to a plurality of operational configurations that differ in frequency and/or in phase shift(s) between the radiated microwaves. A learning procedure can be executed by sequentially operating the at least two radiating portions in several operational configurations. Energy efficiency data are calculated for those operational configurations. An operating frequency can be selected, the selection being based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency may be taken as a reference.

Abstract: This disclosure relates to a microwave heating device and a method for operating a microwave heating device, in particular to heat at least one product inside a heating chamber of the device. The microwave heating device comprises at least two radiating portions that are adapted to radiate microwaves to the heating chamber and can be operated according to a plurality of operational configurations that differ in frequency and/or in phase shift(s) between the radiated microwaves. A learning procedure can be executed by sequentially operating the at least two radiating portions in several operational configurations. Energy efficiency data are calculated for those operational configurations. An operating frequency can be selected via an algorithm that optimizes a mathematical function based on energy efficiency data. An operational configuration with a maximum energy efficiency at the selected operating frequency may be taken as a reference.

Abstract: A method and an apparatus for heating a food product constituted of a sandwich or the like, before it is consumed, in which the food product 4 is enclosed between at least a first heating element 6 and a second heating element 7 facing each other, the first heating element 6 comprising a first plurality 8 of electrically conductive raised elements 9 protruding towards the second heating element 7, and the second heating element 7 comprising a second plurality 10 of electrically conductive raised elements 9 protruding towards the first heating element 6, and is radio frequency heated using the raised elements 9 as electrodes 11, 12.

Abstract: An apparatus for heating foods comprises a supporting structure, a treatment zone designed to receive at least one food product to be heated, a radio frequency dielectric heating system, a system for moderating the temperature of at least one surface of the food product during heating. The temperature moderating system comprises at least one fluid container intended to be interposed between an electrode of the dielectric heating system and a surface of the food product received in the treatment zone. During use of the apparatus, the radio frequency dielectric heating system supplies energy to the food product in the treatment zone, the at least one fluid container receives thermal energy from the surface of the food product, a fluid circulates in the at least one fluid container between the infeed and the outfeed for removing at least part of the thermal energy received.

Abstract: A device for the induction heating of a billet of metal of high electrical conductivity has: a tubular body supporting a plurality of permanent magnets arranged inside the tubular body, angularly spaced apart from each other and arranged so as to be alternated with opposite polarities. The device also has a support for the billet that is arranged inside the tubular body and faces the magnets, The device also has a motor adapted to rotate the tubular body with respect to the billet in order to induce currents in the billet that circulate within the metal material, obtaining the heating of the billet by the Joule effect. An integral cooling system for the permanent magnets is provided, this being carried by the tubular body and suitable for feeding cooling air flows between adjacent permanent magnets.

Abstract: An electric oven includes a box casing presenting side walls, a rear wall, an upper wall and a lower wall, an opening and a closure door for this latter, the walls bounding an oven cavity heated by heating structure functionally associated with at least one of the walls. The heating structure is arranged to heat the cavity by induction and includes a generator arranged to generate an electromagnetic field, an electrically insulating material disposed between the generator and the oven wall at which the heating structure is positioned, and magnetically insulating structure is disposed on the outside of the oven with reference to the wall, the generator, the electrically insulating structure and the magnetically insulating structure defining a single, layered structure fitted to the oven wall.

Abstract: A method for detecting the pan size and/or position in induction cooking hobs comprises providing at least a sensing circuit associated to a magnetic field concentrator, particularly a ferrite bar, and assessing an electrical parameter thereof correlated to the variation of the magnetic flux.