EP4033862B1 - Dispositif de chauffage, dispositif de rayonnement, procédé de fabrication d'un dispositif de chauffage et utilisation d'un dispositif d'affichage - Google Patents

Dispositif de chauffage, dispositif de rayonnement, procédé de fabrication d'un dispositif de chauffage et utilisation d'un dispositif d'affichage Download PDF

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Publication number
EP4033862B1
EP4033862B1 EP21152429.3A EP21152429A EP4033862B1 EP 4033862 B1 EP4033862 B1 EP 4033862B1 EP 21152429 A EP21152429 A EP 21152429A EP 4033862 B1 EP4033862 B1 EP 4033862B1
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EP
European Patent Office
Prior art keywords
radiation
antenna
cavity
frequency
radio frequency
Prior art date
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EP21152429.3A
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German (de)
English (en)
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EP4033862A1 (fr
Inventor
Pablo RODRIGUEZ CEPEDA
Andrea De Angelis
Daniele Turrin
Claudio MAZZON
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority to EP21152429.3A priority Critical patent/EP4033862B1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • H05B6/686—Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators

Definitions

  • Document EP 3 035 773 A1 describes a microwave appliance for cooking food, the appliance comprising a solid state microwave amplifier that is mounted to a heat sink.
  • the appliance further comprises an antenna for emitting microwaves into a cavity for heating a food object.
  • the antenna is mounted to one end of the heat sink, and may be directly wired to the amplifier.
  • the given design is comparatively complex with regard to assembly.
  • US 2017/0251530 A1 describes a microwave device for heating food objects, comprising a cavity, a microwave generator and two patch antennas.
  • the patch antennas are provided at the bottom side of the cavity and connected via wire transmission lines, rectangular coaxial transmission lines or strip line transmission lines. Again, the assembly and manufacture may be comparatively complex.
  • WO 2015/028839 A1 describes a microwave power generation module including an amplifier arrangement, an impedance matching element, and a resonant element.
  • the amplifier arrangement includes a transistor with a transistor input and a transistor output.
  • the impedance matching element is formed from a planar conductive structure.
  • the planar conductive structure has a proximal end and a distal end, and the proximal end is electrically coupled to the transistor output.
  • the resonant element has a proximal end electrically coupled to the distal end of the planar conductive structure, and the resonant element is configured to radiate electromagnetic energy having a microwave frequency in a range of 800 megahertz (MHz) to 300 gigahertz (GHz).
  • the splitting element comprises a quadrature coupler.
  • the apparatus is operable in at least one of a first mode and second mode, wherein, in the first mode, the predefined load equals an RF short or an RF open, and, in the second mode, the predefined load equals a dummy load.
  • the objective technical problem may be considered as providing an improved radiation device, a heating device, a method for manufacturing a heating device, and a use of a radiation device the improvement related to simplified manufacture and assembly, and advantages with regard to cost and installation space. Further, a radiation device, a heating device, a method for manufacturing a heating device, and a use of a radiation device may be provided that are advantageous, in particular efficient, with regard to the generation and application of high frequency radiation in the radio frequency and/or microwave frequency range.
  • the high-frequency radiation may be in the radio frequency (RF) range, such as for example in the range from 1 MHz to 300 MHz.
  • RF radio frequency
  • the radiation may be in the microwave frequency (MW) range, such as 300 MHz to 300 GHz.
  • MW microwave frequency
  • the radiation device may be adapted such that the RF and MW radiation may be applied independent of each other.
  • the RF or MW radiation may be applied, at least in some operational phases, individually or, in other operational phases in combination, e.g. concurrently.
  • the radiation device in particular a device at least configured for radiation emission, is configured for dielectrically heating, in particular cooking, one or more objects, such as foodstuff or items comprising foodstuff, with the object(s) located or placed in a cavity of a heating device, in particular cooking device, such as a cooking appliance.
  • the radiation device may be configured for radiating the RF and/or MW radiation into the cavity.
  • the object(s) may be irradiated with the RF and/or MW radiation, causing heating by virtue of the object(s) absorbing the RF and/or MW radiation due to dielectric effects.
  • the RF radiation is preferably in the range from 1 MHz to 300 MHz
  • the MW radiation is preferably in the range from 300 MHz to 300 GHz.
  • the RF and MW radiation and the RF and MW range may be selected such that foodstuff may be heated, e.g. thawed/defrosted, or cooked etc..
  • the mentioned ranges in particular are suitable for heating or cooking foodstuff.
  • the radiation device further comprises at least one antenna coupled to the output port of the SSPA module.
  • the antenna is at least configured for emitting (or: radiating) RF or MW radiation based on the signals from the output port of the SSPA module.
  • At least one of the at least one antenna may be configured and provided for use for receiving RF and/or MW radiation.
  • the antenna may be connected to a receiver module configured for receiving the radiation from the antenna.
  • the antenna may for example be used as a receiving antenna for determining the absorption characteristic of the object(s) placed in the cavity. In case that the absorption of the object(s) within the cavity is poor, considerable amounts of the radiation may be reflected, wherein the reflected radiation may be received and detected by the antenna and a corresponding receiver module, and the operation of the radiation device may be adapted to reduce, in particular minimize, reflection.
  • the SSPA module or the signal generator module may be adapted to match the RF and/or MW radiation to the absorption characteristic of the object(s), for example to obtain maximum absorbance.
  • the SSPA module and/or the signal generator module may be configured for varying the RF and/or MW signals.
  • the suggested radiation device in particular the suggested printed circuit board layout, provide the advantage of simplified manufacture and installation.
  • the SSPA module and antenna may be manufactured for being handled as a single component during installation and mounting.
  • the suggested design makes it possible to eliminate connectors (of any kind) on the SSPA module, because the antenna may be directly connected on the printed circuit board to the output port of the SSPA module.
  • it is in particular possible to eliminate coaxial cable or guide assemblies between SSPA module and the antenna. Without the need of connectors and/or cables etc. a more efficient transfer between the SSPA module and the antenna is possible, and leakage prevention in sections between the SSPA module and the antenna may be simplified.
  • the suggested design enables a compact design, in turn simplifying integration into a heating or cooking appliance, such as a cooking oven, e.g. a household cooking oven.
  • a heating or cooking appliance such as a cooking oven, e.g. a household cooking oven.
  • At least one of the at least one SSPA module and at least one of the at least one antenna are placed successively on a common or single PCB of the printed circuit board layout.
  • an antenna input port of the antenna may be connected to and positioned immediately after or adjacent to the output port of the SSPA module.
  • the SSPA module and the antenna may be placed on the PCB directly next to each other with the output port of the SSPA module facing the input port of the antenna.
  • the housing is configured for attachment to a support element of the appliance, in particular to an outer side of a cavity wall of the cavity, to a support panel and/or to a component carrier of the appliance.
  • the housing and pass-through window may be configured for placement at a transparent opening of the cavity enabling feeding, in particular direct feeding, of the HF radiation emitted by the antenna into the cavity.
  • the housing of the radiation device as such and/or the support element may comprise fastening elements, in particular mutually matching fastening elements.
  • the housing, the support element, and/or the fastening elements may be configured such that the antenna or the pass-through window can be aligned with the transparent opening of the cavity.
  • the housing, the support element, and/or the fastening elements may be configured such that the pass-through window is pushed against the transparent opening in the mounted state, such that HF radiation emitted by the antenna can be directly fed into the cavity, whilst avoiding leakage in or at the junction area between the housing of the radiation device and the cavity.
  • the attachment of the housing of the radiation device on or at the cavity may be configured such that the HF radiation may be fed into the cavity via a feed line, such as a wave guide or similar, interposed between the pass-through window and the transparent opening.
  • a feed line such as a wave guide or similar
  • the suggested radiation device is suitable both for directly feeding the HF radiation into the cavity and for indirectly feeding the HF radiation into the cavity via a feed line. Therefore, the suggested radiation device provides flexibility with regard to mounting and positioning the radiation device relative to the cavity and within an outer housing of the heating or cooking appliance.
  • the pass-through window may be implemented as a cutout.
  • the cutout may be filled or covered by a second material that is transparent for the RF and/or MW radiation.
  • the type and/or shape of the antenna may be selected in dependence of the cavity (shape, size, etc.) used, the intended application (thawing, cooking, boiling etc.), and/or the RF and MW range, generator or amplifier used.
  • the ground plane of the antenna may be directly placed on the PCB.
  • the ground plane (or plate) may not be part of the PCB, but realized with a sort of "metal panel" behind the PCB.
  • the radiation device may further comprise a receiver module with an input port thereof connected to the antenna.
  • the receiver module may be configured for receiving, via the antenna, RF and/or MW radiation reflected back from the cavity.
  • the receiver module may be accommodated within the housing of the radiation device, and may be shielded by the housing from being radiated with the HF radiation generated by the antenna and/or reflected back from the cavity.
  • the housing of the radiation device, accommodating the amplifier module and other HF-sensitive electronic or electric components may be configured such that these components are shielded from being radiated with HF radiation generated by the antenna and/or reflected back from the cavity.
  • a heating device for dielectric heating, in particular cooking, one or more objects, such as foodstuff, with HF radiation in the RF and/or MW range is provided.
  • the heating device may for example be a heating, in particular cooking, appliance, e.g. for use as a household device, for heating or cooking food, respectively.
  • the heating device comprises at least one radiation device according to any of the embodiments described in connection with the invention herein.
  • the hating device further comprises a cavity enclosed by outer walls, wherein the cavity is configured for accommodating therein the one or more objects to be heated by the HF radiation. Therefore, the cavity may be considered as a heating cavity configured for heating therein objects, in particular food, via dielectric heating based on HF radiation in the RF and/or MW range.
  • the radiation device is configured for generating RF radiation only
  • the cavity is accordingly adapted for RF heating, in particular such that at least RF radiation is prevented from leaking outside while enabling objects placed within the cavity to be heated by RF radiation.
  • the cavity is accordingly adapted for MW heating, in particular such that at least MW radiation is prevented from leaking outside while enabling objects placed within the cavity to be heated by MW radiation.
  • the (one or more) radiation device(s) is(are) configured for generating both RF radiation and MW radiation (e.g. comprising respective amplifier modules)
  • the cavity is accordingly adapted for RF and MW heating, in particular such that RF and MW radiation is prevented from leaking outside while enabling objects placed within the cavity to be heated by RF and MW radiation, respectively.
  • the outer walls of the cavity are impermeable for the RF and/or MW radiation.
  • the outer walls e.g. a particular wall of the cavity, such as a side wall, a bottom wall, a top wall, or a back wall, may and comprise at least one opening that is transparent for the RF and/or MW radiation, i.e. a transparent opening as referred to above.
  • the opening may be configured such that RF and/or MW radiation emitted by a radiation device as described herein may be fed into the cavity for heating objects placed therein.
  • the pass-through window of the radiation device may be aligned with the opening such that the RF and/or MW radiation can be fed directly into the cavity.
  • a transmission line such as a wave guide or coaxial line may be interposed between the pass-through window and the opening of the cavity for feeding the RF and/or MW radiation into the cavity.
  • the at least one radiation device may be positioned at, in particular mounted to, an outer side of an outer wall of the cavity such that the at least one antenna is able to emit RF and/or MW radiation through the opening into, in particular directly into, the cavity for heating the one or more objects.
  • the device may comprise more than one radiation device and corresponding openings in the cavity.
  • the radiation devices may be adapted to emit radiation in a particular frequency range, for example selected from RF or MW.
  • one or more radiation devices may be configured and arranged for emitting RF radiation into the cavity, and one or more another radiation devices may be configured and arranged for emitting MW radiation into the cavity.
  • great flexibility with regard to heating food or foodstuff may be obtained, e.g. thawing, cooking etc., local heating/cooking, object- or food-specific heating etc..
  • the heating device may further comprise a RF and/or MW transparent inlay inserted into the opening of the cavity, or a RF and/or MW transparent cover connected to the wall and/or the opening of the cavity, and, respectively.
  • the cover may cover the opening from an inner or outer side relative to the cavity interior.
  • a (conductive) gasket or similar may be arranged and positioned between the radiation device and the cavity.
  • the gasket may surround a transparent opening of the cavity and the pass-through window such that HF radiation may be prevented from leaking outside.
  • a gasket may for example be made of a RF and/or MW impermeable material to avoid RF and/or RF leakage.
  • the gasket may be adapted and configured for compensating planarity tolerances between the cavity wall, in particular between the opening, and the housing of the radiation device, in particular the pass-through window.
  • connection or linkage between the antenna and the cavity i.e. the transmission passway between antenna, the pass through window, and the transparent opening in the cavity
  • the radiation device in particular the housing thereof, may be urged on the cavity wall such that the interconnection is sufficiently tight with regard to RF and/or MW leakage.
  • the radiation device may be connected to the cavity wall without a gasket.
  • the transparent inlay may in embodiments be integrated between the antenna and the cavity, or can be added inside the cavity, so as to cover the antenna, in particular the pass-through window.
  • the heating device may further comprise a gasket that is impermeable for the RF and/or MW radiation and positioned between the opening in the cavity and the pass-through window.
  • the gasket may be arranged and configured for preventing the RF and/or MW radiation from leaking outside in a contact area between the opening and the pass-through window.
  • the radiation device may be mounted without such a gasket, e.g. directly to an outer cavity wall.
  • a method for manufacturing a heating device according as described herein in connection with the invention is provided.
  • the method may comprise the following steps:
  • a use of a radiation device according to any embodiments described in connection with the invention in a device for heating, in particular cooking, one or more objects of foodstuff by dielectric heating based on radio RF radiation in the range from 1 MHz to 300 MHz and/or MW radiation in the range from 300 MHz to 300 GHz generated by the radiation device and emitted by the antenna is provided.
  • FIG. 1 shows a schematic system overview of components of a heating device according to an embodiment.
  • the heating device which will be described in connection with an exemplary embodiment in connection with FIG. 9 , comprises a control unit 1, a power supply unit 2, a signal generator module 3, a SSPA module 4, a cooling module 5 for cooling the SSPA module 4, an antenna 6, and a cavity 7.
  • the heating device in particular a cooking device, may comprise further components and units. However, only such components have been mentioned that seem helpful in understanding the exemplary embodiments according to the invention and described in connection with the figures.
  • the control unit 1 is configured for controlling the operation of the other components, in particular the power supply unit 2, the signal generator module 3, the SSPA module 4, in connection with generating and radiating HF radiation in the RF and/or MW range into the cavity 7, and in case that the cooling module 5 is an active cooling module also the cooling module 5.
  • the HF radiation 9 emitted into or radiated into the cavity 7 is schematically illustrated in FIG. 1 by a dashed arrow.
  • the power supply unit 2 is configured for supplying power to the signal generator module 3 and the SSPA module, and, if required, to the cooling module 5.
  • the signal generator module 3 is configured for generating HF signals in the RF and MW range.
  • the RF range may be from 1 MHz to 300 MHz
  • the MW range may be from 300 MHz to 300 GHz. It is to be understood, that the given ranges refer to maximal frequency ranges, wherein the signal generator module 3 may be configured for generating signals in subinterval ranges from the given maximal ranges as required.
  • the SSPA module 4 amplifies the HF signals received at its input port 11 from the output port 10 of the signal generator module 3 and provides the amplified signals at an output port 12 of the SSPA module 4.
  • the output port 12 of the SSPA module 4 is connected to the antenna 6, which is configured for emitting HF radiation 9 in the RF and/or MW range based on the amplified signals provided at the output port 12 of the SSPA module 4.
  • the SSPA module 4 and the antenna 6 are part of a radiation device 8 as shown and described in an exemplary embodiment in more details in connection with FIG. 2 and FIG. 3 .
  • the HF radiation 9 emitted by the antenna 6 is fed into the cavity 7 for dielectrically heating one or more objects, such as food objects, food items and foodstuff inside the cavity 7.
  • the SSPA module 4 and the antenna 6 of the radiation device 8 are integrated on a common printed circuit board 13 as shown in FIG. 2 and FIG. 3 .
  • the SSPA module 4 and the antenna 6 may be handled and mounted as a single component, thereby simplifying assembly of the heating device. Further, by this arrangement, losses and leakage of HF radiation may be reduced due to short transmission pathways.
  • the SSPA module 4 and the antenna 6 are placed successively, in particular directly next to each other, on the printed circuit board 13.
  • the antenna input port 14 of the antenna 6 is connected to and positioned immediately adjacent to the output port 12 of the SSPA module 4.
  • the antenna 6 is implemented as a patch antenna with microstrip feeding which is also shown in FIG. 4 .
  • the radiation device 8 comprises a housing 15 as shown in FIG.2 .
  • the housing 14 accommodates therein the SSPA module 4 and the antenna 6.
  • the housing is made from a HF impermeable material so as to shield the HF-sensitive electronic and electric components therein from the HF radiation 9 generated and emitted by the antenna 6.
  • the housing 15 has and is defined by an outer housing shell 16 enclosing therein the electronic and electric components, in particular the SSPA module 4.
  • the housing 15 is configured for attachment to a support element, such as a wall or support element, of the heating appliance.
  • the housing 15 comprises several attachment tabs 18 with through holes configured for screw attachment on or at the cavity 7.
  • the housing 15 of the radiation device 8 and the pass-through window 17 are configured in the example shown in FIG. 9 such that the surface of the housing 15 is substantially planar and can be press-fitted on a corresponding planar, outer mounting surface of a cavity wall.
  • the housing 15 of the radiation device 8 may for example be made from metal, in more general from a material suitable for shielding the HF radiation 9.
  • the pass-through window 17 may be implemented as a cutout, which may be filled or covered with a HF transparent material, if required.
  • the radiation device 8 may comprise different types of antenna 6, depending, for example, on the desired application, the HF radiation used, the size and dimensions of the cavity 7 and others.
  • the antenna 6 may be implemented as a patch antenna with microstrip feeding as shown in FIG. 4 , a patch antenna with aperture feeding as shown in FIG. 5 , a coplanar patch antenna as shown in FIG. 7 , and a monopole microstrip antenna as shown in FIG. 8 , which are generally known in the art.
  • the antenna 6 shown in FIG. 4 represents a patch antenna with microstrip feeding with a planar active surface 20 and a microstrip feed 21.
  • the antenna 6 shown in FIG. 5 represents a patch antenna with aperture feeding, wherein the aperture 22 in the given example is rectangular in shape.
  • the patch antenna of FIG. 5 is multilayered and comprises a feed layer 23 for feeding the HF signals from the output port of the SSPA module 4, an aperture layer 24 including the aperture 22, and a radiation layer 25 for radiating and emitting the HF radiation 9 via patch 26.
  • the aperture 22 represents a coupling slot between the radiation layer 25 and a feed line 23a of the feed layer 23.
  • the HF radiation 9 emitted by the antenna 6 in FIG. 6 is inter alia dependent on the shape of the aperture 22.
  • the aperture 22 shown in FIG. 5 is rectangular. However, other shapes may be used, depending on the particular application, e.g. defrosting, cooking, boiling, etc., cavity 7, in particular shape and size of the cavity 7, and/or HF frequency used.
  • FIG. 6 shows several different shapes that may be used for the aperture 22 of the patch antenna in FIG. 5 .
  • the aperture 22 may be rectangular with different sizes in length and width dimension.
  • the shape may also be different from rectangular, for example H-shaped, butterfly-shaped with sharp edges, or butterfly-shaped with rounded edges.
  • the form, shape and size may be selected according to the particular application and cavity used.
  • FIG. 8 shows an antenna 6 implemented as a monopole microstrip antenna with a ground plane 32, a microstrip feed line 33, and a meandered monopole 34.
  • the monopole may have a different shale in other embodiments.
  • the antennas 6 shown in connection with FIG. 4 to 8 are merely some examples. As indicated above, the antennas may be configured differently, in particular with regard to type, shape, number of layers etc..
  • ground planes may be directly placed on the printed circuit board 13 of the radiation device 8. It is, however, also possible, that the ground plane is not part of the printed circuit board 13, but realized with a sort of "metal panel" on a side of the printed circuit board 13 that is averted from the antenna patch.
  • FIG. 9 shows a microwave oven 35 as an example for a heating device according to the invention.
  • the microwave oven 35 comprises a control panel 36, the cavity 7, and the radiation device 8.
  • the microwave oven 35 comprises a door (not shown) for closing the cavity 7 in the operational state in which a food item 37 placed within the cavity 7 is subjected to HF radiation 9 (only schematically indicated) for dielectrically heating the food item 37.
  • the radiation device 8 is placed at a rear wall of the cavity 7 with the pass-through window 17 aligned with the transparent opening 19, such that HF radiation 9 emitted by the antenna 6 can be directly radiated into the cavity 7 for heating the object 37.
  • the radiation device and transparent opening 19 may be placed at any other location and side wall of the cavity 7.
  • several of the radiation devices 8 may be provided at different locations at or on the cavity walls.
  • Such radiation devices may of same type, or may be different, for example with regard to power, frequency range and others.
  • the microwave oven 35 or in general a corresponding heating device, may comprise several radiation devices 8 for radiating HF radiation 9 into the cavity.
  • a radiation device may be provided that is adapted for heating the object 35 for defrosting or thawing, e.g. with a HF spectrum in the RF range.
  • a separate radiation device 8 may be provided that is adapted for cooking, e.g. with a HF spectrum in the MW range.
  • a radiation device may be adapted and suitable for radiating both RF and MW as needed. If there are several radiation devices, they may be associated with different sections of the cavity 7 such that different volumes of the cavity 7, in particular different objects or food items placed within the cavity 7, may be heated differently.
  • the radiation devices may be adapted for operating at variable frequencies, for example allowing frequency sweeping or adaption according to particular needs.
  • the transparent opening 19 may be covered by a transparent inlay inserted into the transparent opening 19, or it may be covered by a RF and/or MW transparent cover connected to the wall of the cavity 7, e.g. from an inner or outer side thereof.
  • the cover may also or alternatively be attached, e.g. snap-connected to the transparent opening 19, for example in connection with an inner rim of the transparent opening 19.
  • the cover covers the transparent opening 19, and may be adapted to seal the transparent opening 19 to avoid moisture from penetrating outwards in the area of the transparent opening 19.
  • FIG. 10 shows a flow diagram of method steps to be applied in a process for assembling a heating device, in particular the microwave oven 35 shown in FIG. 9 .
  • the method comprises a step 101 of providing a cavity 7 with outer walls that are impermeable for RF and/or MW radiation in the range between 1 MHz and 300 MHz and in the range between 300 MHz and 300 GHz, respectively, wherein the cavity 7 comprises the transparent opening 19 that is transparent for the RF and/or MW radiation 9.
  • the method further comprises step 102 of mounting the radiation device 8 to or at an outer side of an outer wall of the cavity 7 such that the transparent opening 19 is aligned with the pass-through window 17 of the housing 15 of the radiation device 8 to enable the RF and/or MW radiation generated by the radiation device 8 to be fed into the cavity 7, in particular directly into the cavity 7, via the antenna 6 for dielectrically heating the object 37.

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  • Constitution Of High-Frequency Heating (AREA)

Claims (15)

  1. Dispositif à rayonnement (8) configuré pour la chauffe diélectrique, en particulier la cuisson, d'un ou plusieurs objets (37), tels que des aliments, avec un rayonnement (9) haute fréquence dans la plage radiofréquence et/ou la plage de fréquence micro-onde dans une cavité (7) d'un appareil de chauffe (35), en particulier d'un appareil de cuisson (35), comprenant :
    - au moins un module amplificateur de puissance à l'état solide (4) comportant au moins un port d'entrée (11) et au moins un port de sortie (12), le module amplificateur à l'état solide (4) étant configuré pour amplifier des signaux radiofréquence et/ou à fréquence micro-onde reçus au niveau du port d'entrée (11), et pour délivrer les signaux radiofréquence et/ou à fréquence micro-onde amplifiés au niveau du port de sortie (12) ;
    - au moins une antenne (6) couplée au port de sortie (12) du module amplificateur à l'état solide (4) et au moins configurée pour émettre un rayonnement (9) radiofréquence ou à fréquence micro-onde sur la base des signaux provenant du port de sortie (12) du module amplificateur à l'état solide (4), et
    - une unité de commande (1) pour commander le module amplificateur de puissance à l'état solide (4) pour émettre le rayonnement (9) haute fréquence dans la plage radiofréquence et/ou la plage de fréquence micro-onde dans la cavité (7) pour une chauffe diélectrique de l'objet ou des objets (37) placé(s) en son sein, l'unité de commande (1) étant en outre configurée pour commander l'émission du rayonnement (9) haute fréquence dans la plage radiofréquence et/ou la plage de fréquence micro-onde pour la chauffe de l'objet ou des objets (36) sur la base d'un rayonnement radiofréquence et/ou micro-onde réfléchi depuis la cavité (7) et reçu par un module récepteur via l'au moins une antenne (6),
    - l'au moins un module amplificateur de puissance à l'état solide (4) et l'au moins une antenne (6) étant intégrés sur un agencement de carte de circuit imprimé (13) commun, et
    - l'unité de commande (1) étant configurée pour faire varier la fréquence sur la base du rayonnement radiofréquence et/ou micro-onde réfléchi depuis la cavité (7) et reçu par le module récepteur.
  2. Dispositif à rayonnement (8) selon la revendication 1, au moins un parmi le ou les modules amplificateurs de puissance à l'état solide (4) et au moins un parmi l'antenne ou les antennes (6) étant placés successivement sur une carte de circuit imprimé (13) de l'agencement de carte de circuit imprimé (13), avec un port d'entrée (14) d'antenne de l'antenne (6) connecté et positionné de manière immédiatement adjacente au port de sortie (12) du module amplificateur à l'état solide (4).
  3. Dispositif à rayonnement (8) selon la revendication 1 ou 2, comprenant en outre un boîtier (15) recevant en son sein au moins le ou les modules amplificateurs de puissance à l'état solide (4) et l'antenne ou les antennes (6), le boîtier (15) ayant une enveloppe de boîtier extérieure (16) avec une fenêtre de passage (17), la fenêtre de passage (17) étant alignée avec la position de l'antenne (6) dans le boîtier (15) et configurée pour permettre à un rayonnement (9) haute fréquence dans la plage radiofréquence et/ou la plage de fréquence micro-onde, en particulier un rayonnement (9) haute fréquence émis par l'antenne (6), de passer à travers, le boîtier (15), à part la fenêtre de passage (17), n'étant pas transparent pour le rayonnement (9) haute-fréquence dans la plage radiofréquence et/ou de fréquence micro-onde.
  4. Dispositif à rayonnement (8) selon la revendication 3, le boîtier (15) étant configuré pour se fixer à un élément support de l'appareil (35), en particulier à un côté externe d'une paroi de cavité de la cavité (7), à un panneau support et/ou à un support de composant de l'appareil (35), et le boîtier (15) et la fenêtre de passage (17) étant configurés pour se placer au niveau d'une ouverture (19) transparente de la cavité (7) permettant la fourniture, en particulier une fourniture directe, du rayonnement (9) haute fréquence émis par l'antenne (6) dans la cavité (7).
  5. Dispositif à rayonnement (8) selon la revendication 3 ou 4, le boîtier (15) étant fait d'un premier matériau imperméable au rayonnement (9) radiofréquence et/ou à fréquence micro-onde, tel que du métal, avec la fenêtre de passage (17) mise en place en tant qu'évidement.
  6. Dispositif à rayonnement (8) selon la revendication 5, l'évidement étant rempli de ou recouvert par un deuxième matériau transparent au rayonnement (9) radiofréquence et/ou à fréquence micro-onde.
  7. Dispositif à rayonnement (8) selon l'une quelconque des revendications 1 à 6, au moins une de l'antenne ou des antennes (6) étant choisie dans le groupe comprenant : une antenne à plaque avec une alimentation à microrubans, une antenne à plaque avec une alimentation à ouverture, une antenne à plaque coplanaire, une antenne microruban unipolaire.
  8. Dispositif à rayonnement (8) selon l'une quelconque des revendications 1 à 7, comprenant en outre un module récepteur avec un port d'entrée connecté à l'antenne (6), le module récepteur étant configuré pour recevoir, via l'antenne, un rayonnement radiofréquence et/ou à fréquence micro-onde réfléchi depuis la cavité (7).
  9. Dispositif de chauffe (35) pour une chauffe diélectrique, en particulier une cuisson, d'un ou plusieurs objets (37), tels que des aliments, avec un rayonnement (9) radiofréquence et/ou à fréquence micro-onde, comprenant :
    a) au moins un dispositif à rayonnement (8) selon l'une quelconque des revendications 1 à 8 ;
    b) une cavité (7) entourée de parois extérieures, la cavité (7) étant configurée pour recevoir en son sein l'objet ou les objets (37) à chauffer, les parois extérieures étant imperméables au rayonnement (9) radiofréquence et/ou à fréquence micro-onde, et comprenant au moins une ouverture (19) transparente au rayonnement (9) radiofréquence et/ou à fréquence micro-onde ;
    c) l'au moins un dispositif à rayonnement (8) étant positionné au niveau de, en particulier fixé sur, un côté extérieur d'une paroi extérieure de la cavité (7) de telle sorte que l'antenne ou les antennes (6) peut/peuvent émettre un rayonnement (9) radiofréquence et/ou à fréquence micro-onde via l'ouverture (19) dans, en particulier directement dans, la cavité (7) pour chauffer l'objet ou les objets (37).
  10. Dispositif de chauffe (35) selon la revendication 9, comprenant en outre une incrustation transparente aux radiofréquences et/ou fréquences micro-onde insérée dans l'ouverture (19), ou un couvercle transparent aux radiofréquences et/ou fréquences micro-onde connecté à la paroi et/ou à l'ouverture (19) et fermant l'ouverture (19) .
  11. Dispositif de chauffe (35) selon la revendication 10, comprenant en outre un joint imperméable au rayonnement (9) radiofréquence et/ou à fréquence micro-onde et positionné entre l'ouverture (19) et la fenêtre de passage (17), le joint étant agencé et configuré pour éviter au rayonnement (9) radiofréquence et/ou à fréquence micro-onde de fuiter en dehors dans une zone de contact entre l'ouverture (19) et la fenêtre de passage (17).
  12. Dispositif de chauffe (35) selon l'une quelconque des revendications 9 à 11, comprenant en outre une unité d'alimentation électrique (2), un module générateur de signal (3), une unité de commande (1), et un module de refroidissement (5) pour refroidir au moins le dispositif à rayonnement (8), l'unité d'alimentation électrique (2) étant configurée pour alimenter le module générateur de signal (3) et le dispositif à rayonnement (8) avec de la puissance électrique, le module générateur de signal (3) étant configuré pour générer des signaux radiofréquence et/ou à fréquence micro-onde, avec un port de sortie (10) du module générateur de signal (3) couplé à un port d'entrée (11) du module amplificateur de puissance à l'état solide (4) pour fournir les signaux du module générateur de signal (3) au module amplificateur de puissance à l'état solide (4), l'unité de commande (1) étant configurée pour commander l'unité d'alimentation électrique (2), le module générateur de signal (3), et/ou le module amplificateur de puissance à l'état solide (4), pour émettre le rayonnement (9) radiofréquence et/ou à fréquence micro-onde dans la cavité (7) pour une chauffe diélectrique de l'objet ou des objets (37) placés en son sein.
  13. Dispositif de chauffe (35) selon la revendication 12, l'unité de commande (1) étant en outre configurée pour commander l'émission du rayonnement (9) radiofréquence et/ou à fréquence micro-onde pour chauffer l'objet ou les objets (37) sur la base d'un rayonnement radiofréquence et/ou à fréquence micro-onde réfléchi depuis la cavité (7) et détecté par un module récepteur du dispositif de chauffe (35) via l'antenne (6).
  14. Procédé d'assemblage d'un dispositif de chauffe (35) selon l'une quelconque des revendications 9 à 13, comprenant :
    a) la fourniture (101) d'une cavité (7) avec des parois extérieures imperméables à un rayonnement (9) radiofréquence et/ou à fréquence micro-onde, la radiofréquence étant dans la plage entre 1 MHz et 300 MHz, la fréquence micro-onde étant dans la plage entre 300 MHz et 300 GHz ; la cavité (7) comprenant une ouverture (19) transparente à un rayonnement (9) radiofréquence et/ou à fréquence micro-onde ; et
    b) la fixation (102) d'un dispositif à rayonnement (8) selon l'une quelconque des revendications 1 à 8 à ou au niveau d'un côté extérieur d'une paroi extérieure de la cavité (7) de telle sorte que l'ouverture (19) de la paroi est alignée avec une ou la fenêtre de passage (17) du boîtier (15) du dispositif à rayonnement (8) pour permettre au rayonnement (9) radiofréquence et/ou à fréquence micro-onde généré par le dispositif à rayonnement (8) d'être fourni dans la cavité (7), en particulier directement dans la cavité (7), via l'antenne (6),
    le dispositif à rayonnement comprenant un boîtier (15) recevant en son sein au moins le ou les modules amplificateurs de puissance à l'état solide (4) et l'antenne ou les antennes (6), le boîtier (15) ayant une enveloppe de boîtier extérieure (16) avec un fenêtre de passage (17), la fenêtre de passage (17) étant alignée avec la position de l'antenne (6) dans le boîtier (15) et configurée pour permettre à un rayonnement (9) haute fréquence dans la plage radiofréquence et/ou de fréquence micro-onde, en particulier un rayonnement (9) haute fréquence émis par l'antenne (6), de passer à travers, le boîtier (15), à part la fenêtre de passage (17), n'étant pas transparent au rayonnement (9) haute-fréquence dans la plage radiofréquence et/ou de fréquence micro-onde.
  15. Utilisation d'un dispositif à rayonnement (8) selon l'une quelconque des revendications 1 à 8 dans un dispositif (35) de chauffe, en particulier de cuisson, d'un ou plusieurs objets (37) d'aliments par chauffe diélectrique sur la base d'un rayonnement (9) radiofréquence dans la plage de 1 MHz à 300 MHz et/ou d'un rayonnement (9) à fréquence micro-onde dans la plage de 300 MHz à 300 GHz généré par le dispositif à rayonnement (8) et émis par l'antenne (6) dans une cavité (7) du dispositif (35), le dispositif (35) étant de préférence configuré selon l'une quelconque des revendications 9 à 13.
EP21152429.3A 2021-01-20 2021-01-20 Dispositif de chauffage, dispositif de rayonnement, procédé de fabrication d'un dispositif de chauffage et utilisation d'un dispositif d'affichage Active EP4033862B1 (fr)

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EP21152429.3A EP4033862B1 (fr) 2021-01-20 2021-01-20 Dispositif de chauffage, dispositif de rayonnement, procédé de fabrication d'un dispositif de chauffage et utilisation d'un dispositif d'affichage

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EP21152429.3A EP4033862B1 (fr) 2021-01-20 2021-01-20 Dispositif de chauffage, dispositif de rayonnement, procédé de fabrication d'un dispositif de chauffage et utilisation d'un dispositif d'affichage

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Publication number Priority date Publication date Assignee Title
US5558880A (en) 1989-12-22 1996-09-24 Janssen Pharmaceutica Inc. Pharmaceutical and other dosage forms
GB2512819B (en) * 2013-03-18 2021-07-14 Wayv Tech Limited Microwave heating apparatus
WO2015028839A1 (fr) * 2013-08-29 2015-03-05 Freescale Semiconductor, Inc. Modules de génération de puissance micro-onde solides intégrés
WO2016043731A1 (fr) 2014-09-17 2016-03-24 Whirlpool Corporation Chauffage direct par antennes à plaques
DE102014226280B4 (de) 2014-12-17 2019-06-13 E.G.O. Elektro-Gerätebau GmbH Mikrowellengenerator und Mikrowellenofen
NL2022064B1 (en) * 2018-11-23 2020-06-05 Ampleon Netherlands Bv Solid state cooking apparatus

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