FR2976651A1 - Window for microwave oven, has layer comprising transparent carbon nanomaterial that absorbs and/or reflects microwaves and printed as coating on transparent pane, where layer is conductive and electrically connected with oven - Google Patents
Window for microwave oven, has layer comprising transparent carbon nanomaterial that absorbs and/or reflects microwaves and printed as coating on transparent pane, where layer is conductive and electrically connected with oven Download PDFInfo
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- FR2976651A1 FR2976651A1 FR1155294A FR1155294A FR2976651A1 FR 2976651 A1 FR2976651 A1 FR 2976651A1 FR 1155294 A FR1155294 A FR 1155294A FR 1155294 A FR1155294 A FR 1155294A FR 2976651 A1 FR2976651 A1 FR 2976651A1
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- layer
- microwave oven
- pane
- window
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Classifications
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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
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
- H05B6/766—Microwave radiation screens for windows
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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
- H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
- H05B2214/04—Heating means manufactured by using nanotechnology
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
Abstract
La présente invention se rapporte à une fenêtre pour un four à micro-ondes, la fenêtre comportant au moins une couche comprenant un nanomatériau de carbone transparent qui absorbe et/ou réfléchit les micro-ondes, ainsi qu'à un four à micro-ondes pourvu d'une telle fenêtre.The present invention relates to a window for a microwave oven, the window comprising at least one layer comprising a transparent carbon nanomaterial that absorbs and / or reflects the microwaves, as well as to a microwave oven provided with such a window.
Description
La présente invention se rapporte à une fenêtre pour un four à micro-ondes. Différentes fenêtres pour fours à micro-ondes sont connues par l'état de la technique, devant empêcher que des rayonnements électromagnétiques ne se dégagent de l'intérieur du four à micro-ondes. L'emploi d'une grille métallique ou d'une toile métallique entre une vitre intérieure et une vitre extérieure dans la zone d'une porte ou d'un volet d'un four à micro-ondes est proposé par le brevet DE 20 2008 010 620 U1, par exemple. Toutefois, une grille métallique ou une toile métallique de ce type bloquant au moins partiellement la vue sur l'intérieur du four à micro-ondes, un film d'oxyde conducteur transparent sur une vitre en verre est io proposé comme alternative par le brevet JP 2008 06 0015. Cette couche peut comprendre un oxyde de zinc avec ajout d'aluminium. Des revêtements écrans à base de métamatériaux de carbone sont déjà connus, le produit disponible sous l'appellation commerciale de CarboShield® devant être ici mentionné à titre d'exemple. 15 Le but de la présente invention est de proposer une fenêtre pour un four à micro-ondes offrant d'une manière simple et efficace un écran de protection contre l'émission de micro-ondes hors d'un four à micro-ondes, sans toutefois bloquer la vue sur l'intérieur du four à micro-ondes. Ce but est atteint par une fenêtre pour un four à micro-ondes avec au moins 20 une couche comprenant un nanomatériau de carbone transparent, absorbant et/ou réfléchissant les micro-ondes. À cet égard, il peut être prévu que la couche soit déposée, en particulier imprimée, comme un revêtement sur une vitre transparente, en particulier comprenant une plaque vitrée. 25 Par ailleurs, il est proposé avec l'invention que la couche soit conductrice et soit reliée électriquement avec le four à micro-ondes, en particulier avec son boîtier métallique. De préférence, il est conforme à l'invention que le nanomatériau de carbone comprenne des nanotubes de carbone, en particulier des nanotubes de carbone à 30 simple paroi. Par ailleurs, il est proposé avec l'invention que deux couches soient prévues, dont une première absorbe les micro-ondes et une deuxième réfléchit les micro-ondes, l'épaisseur de la première couche étant entre 30 et 60 µm et l'épaisseur de la deuxième couche entre 30 et 60 µm, de préférence. B10072FR Les fenêtres selon l'invention peuvent également être caractérisées par deux vitres, dont l'une est une vitre intérieure et l'autre est une vitre extérieure, un espace intermédiaire étant arrangé entre la vitre intérieure et la vitre extérieure, et la/les couche(s) étant disposée(s) sur au moins une des deux vitres dans la zone de l'espace intermédiaire. Par ailleurs, les fenêtres selon l'invention peuvent être caractérisées par un cadre, en particulier métallique, pour le support de la/des vitre(s), le revêtement étant de préférence en contact électrique avec le cadre métallique. L'invention propose également un four à micro-ondes avec un espace de cuisson, lequel peut être fermé par un élément de fermeture, en particulier sous la forme d'une porte ou d'un couvercle, au moins une source de micro-ondes, et comportant une fenêtre selon l'invention dans l'élément de fermeture. À cet égard, des développements de l'invention peuvent être caractérisés par un dispositif de chauffage supplémentaire, en particulier sous la forme d'un dispositif de chauffage électrique ou à gaz, et/ou d'un dispositif d'alimentation en humidité, en particulier sous la forme d'un générateur de vapeur ou d'un pulvérisateur d'eau. L'invention s'appuie sur la découverte inattendue que, par l'utilisation d'un revêtement transparent en nanomatériau de carbone sur une vitre, en particulier une vitre en verre, pour une fenêtre d'un four à micro-ondes, le rayonnement électromagnétique peut être absorbé de façon ciblée, empêchant par conséquent l'émission de micro-ondes hors du four à micro-ondes. À cet égard, des particules de nanotubes de carbone peuvent être utilisées, dont l'action absorbante est dirigée sur le rayonnement micro-ondes employé dans le four à micro-ondes. The present invention relates to a window for a microwave oven. Various windows for microwave ovens are known from the state of the art, to prevent electromagnetic radiation from emanating from inside the microwave oven. The use of a metal grid or wire mesh between an inner pane and an outer pane in the area of a door or shutter of a microwave oven is proposed by DE 20 2008 010 620 U1, for example. However, such a metal grid or wire mesh at least partially blocking the view on the inside of the microwave oven, a transparent conductive oxide film on a glass pane is proposed as an alternative by the JP patent. 2008 06 0015. This layer may comprise a zinc oxide with addition of aluminum. Screen coatings based on carbon metamaterials are already known, the product available under the trade name of CarboShield® to be mentioned here by way of example. The object of the present invention is to provide a window for a microwave oven providing in a simple and effective manner a screen for protection against the emission of microwaves from a microwave oven, without however, block the view on the inside of the microwave oven. This object is achieved by a window for a microwave oven with at least one layer comprising a transparent carbon nanomaterial, absorbing and / or reflecting microwaves. In this regard, it may be provided that the layer is deposited, in particular printed, as a coating on a transparent pane, in particular comprising a glass plate. Furthermore, it is proposed with the invention that the layer is conductive and is electrically connected with the microwave oven, in particular with its metal housing. Preferably, it is in accordance with the invention that the carbon nanomaterial comprises carbon nanotubes, in particular single-walled carbon nanotubes. Furthermore, it is proposed with the invention that two layers are provided, one of which absorbs the microwaves and a second reflects the microwaves, the thickness of the first layer being between 30 and 60 microns and the thickness of the second layer between 30 and 60 microns, preferably. The windows according to the invention may also be characterized by two panes, one of which is an inner pane and the other is an outer pane, an intermediate space being arranged between the inner pane and the outer pane, and the pane (s). layer (s) being arranged on at least one of the two panes in the zone of the intermediate space. Moreover, the windows according to the invention may be characterized by a frame, in particular a metal frame, for supporting the window (s), the coating preferably being in electrical contact with the metal frame. The invention also proposes a microwave oven with a cooking space, which can be closed by a closure element, in particular in the form of a door or a lid, at least one microwave source. and having a window according to the invention in the closure element. In this respect, developments of the invention may be characterized by an additional heating device, in particular in the form of an electric or gas heating device, and / or a moisture supply device, in particular particularly in the form of a steam generator or a water sprayer. The invention is based on the unexpected discovery that, by the use of a transparent coating of carbon nanomaterial on a window, in particular a glass pane, for a window of a microwave oven, the radiation Electromagnetic radiation can be absorbed in a targeted manner, thus preventing the emission of microwaves from the microwave oven. In this regard, carbon nanotube particles may be used, the absorbent action of which is directed at the microwave radiation employed in the microwave oven.
Selon l'invention, une couche en nanotubes de carbone peut être imprimée sur une vitre en verre, avec une épaisseur de couche de 50 µm, par exemple, laquelle garantit une absorption de rayonnement électromagnétique dans la plage des micro-ondes. Cette couche peut être utilisée en combinaison avec une couche réfléchissante, laquelle est également à base de nanomatériaux de carbone et présente également une épaisseur de couche de 50 µm. Sur les fenêtres de portes de fours à micro-ondes, une vitre extérieure et une vitre intérieure sont habituellement utilisées, entre lesquelles un espace intermédiaire est créé, sachant qu'il est recommandé d'appliquer le revêtement sur un côté d'une vitre tourné vers l'espace intermédiaire. À cet égard, il faut s'assurer que le revêtement est en contact électrique avec le reste du boîtier, par le biais d'un cadre de la fenêtre, par exemple. B10072FR 5 Les caractéristiques de l'invention décrites dans la description ci-dessus peuvent être esssentielles aussi bien séparément que dans une quelconque combinaison pour la réalisation de l'invention dans ses différents modes de réalisation. B10072FR According to the invention, a layer of carbon nanotubes can be printed on a glass pane with a layer thickness of 50 μm, for example, which ensures absorption of electromagnetic radiation in the microwave range. This layer can be used in combination with a reflective layer, which is also based on carbon nanomaterials and also has a layer thickness of 50 microns. In microwave oven door windows, an outer pane and an inner pane are usually used, between which an intermediate space is created, knowing that it is recommended to apply the coating to one side of a turned glass pane. towards the intermediate space. In this regard, it is necessary to ensure that the coating is in electrical contact with the rest of the housing, for example through a window frame. B10072 The features of the invention described in the above description may be essential both separately and in any combination for carrying out the invention in its various embodiments. B10072FR
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1155294A FR2976651B1 (en) | 2011-06-16 | 2011-06-16 | WINDOW FOR MICROWAVE OVEN, AND MICROWAVE OVEN HAVING SUCH A WINDOW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1155294A FR2976651B1 (en) | 2011-06-16 | 2011-06-16 | WINDOW FOR MICROWAVE OVEN, AND MICROWAVE OVEN HAVING SUCH A WINDOW |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2976651A1 true FR2976651A1 (en) | 2012-12-21 |
| FR2976651B1 FR2976651B1 (en) | 2015-03-20 |
Family
ID=44532930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1155294A Active FR2976651B1 (en) | 2011-06-16 | 2011-06-16 | WINDOW FOR MICROWAVE OVEN, AND MICROWAVE OVEN HAVING SUCH A WINDOW |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2976651B1 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2789919A3 (en) * | 2014-07-08 | 2015-02-18 | V-Zug AG | Cooking device with user door and with heating for windows in user door |
| WO2015145355A1 (en) * | 2014-03-24 | 2015-10-01 | Sabic Global Technologies B.V. | Transparent articles including electromagnetic radiation shielding |
| CN109416182A (en) * | 2016-12-06 | 2019-03-01 | 惠而浦公司 | Micro-wave oven with full glass door |
| US10560986B2 (en) | 2013-08-20 | 2020-02-11 | Whirlpool Corporation | Method for detecting the status of popcorn in a microwave |
| US10764970B2 (en) | 2016-01-08 | 2020-09-01 | Whirlpool Corporation | Multiple cavity microwave oven insulated divider |
| EP3571444A4 (en) * | 2017-01-20 | 2020-09-02 | Whirlpool Corporation | TRANSPARENT CONDUCTIVE DOOR FOR A MICROWAVE FURNACE AND METHOD OF MANUFACTURING ITEM |
| US10772165B2 (en) | 2018-03-02 | 2020-09-08 | Whirlpool Corporation | System and method for zone cooking according to spectromodal theory in an electromagnetic cooking device |
| US10820382B2 (en) | 2016-01-28 | 2020-10-27 | Whirlpool Corporation | Method and apparatus for delivering radio frequency electromagnetic energy to cook foodstuff |
| US10827569B2 (en) | 2017-09-01 | 2020-11-03 | Whirlpool Corporation | Crispness and browning in full flat microwave oven |
| US10827570B2 (en) | 2016-02-15 | 2020-11-03 | Whirlpool Corporation | Method and apparatus for delivering radio frequency electromagnetic energy to cook foodstuff |
| US10904961B2 (en) | 2015-03-06 | 2021-01-26 | Whirlpool Corporation | Method of calibrating a high power amplifier for a radio frequency power measurement system |
| US10904962B2 (en) | 2015-06-03 | 2021-01-26 | Whirlpool Corporation | Method and device for electromagnetic cooking |
| US10912160B2 (en) | 2018-07-19 | 2021-02-02 | Whirlpool Corporation | Cooking appliance |
| US10993293B2 (en) | 2013-12-23 | 2021-04-27 | Whirlpool Corporation | Interrupting circuit for a radio frequency generator |
| US11039510B2 (en) | 2017-09-27 | 2021-06-15 | Whirlpool Corporation | Method and device for electromagnetic cooking using asynchronous sensing strategy for resonant modes real-time tracking |
| US11404758B2 (en) | 2018-05-04 | 2022-08-02 | Whirlpool Corporation | In line e-probe waveguide transition |
| US11483905B2 (en) | 2016-01-08 | 2022-10-25 | Whirlpool Corporation | Method and apparatus for determining heating strategies |
| US11849526B2 (en) | 2020-03-31 | 2023-12-19 | Midea Group Co., Ltd. | Microwave cooking appliance with increased visibility into the cavity |
| US12200849B2 (en) | 2020-03-31 | 2025-01-14 | Midea Group Co., Ltd. | Microwave cooking appliance with user interface display |
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| US4722860A (en) * | 1985-03-20 | 1988-02-02 | Northrop Corporation | Carbon film coated refractory fiber cloth |
| EP1450584A1 (en) * | 2003-02-20 | 2004-08-25 | Schott Glas | Door with seeing window for microwave apparatuses |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10560986B2 (en) | 2013-08-20 | 2020-02-11 | Whirlpool Corporation | Method for detecting the status of popcorn in a microwave |
| US11102855B2 (en) | 2013-08-20 | 2021-08-24 | Whirlpool Corporation | Method for detecting the status of popcorn in a microwave |
| US12302482B2 (en) | 2013-12-23 | 2025-05-13 | Whirlpool Corporation | Interrupting circuit for a radio frequency generator |
| US10993293B2 (en) | 2013-12-23 | 2021-04-27 | Whirlpool Corporation | Interrupting circuit for a radio frequency generator |
| WO2015145355A1 (en) * | 2014-03-24 | 2015-10-01 | Sabic Global Technologies B.V. | Transparent articles including electromagnetic radiation shielding |
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| JP2017512680A (en) * | 2014-03-24 | 2017-05-25 | サビック グローバル テクノロジーズ ベスローテン フェンノートシャップ | Transparent articles including electromagnetic radiation shields |
| US20180220501A1 (en) * | 2014-03-24 | 2018-08-02 | Sabic Global Technologies B.V. | Transparent articles including electromagnetic radiation shielding |
| EP2789919A3 (en) * | 2014-07-08 | 2015-02-18 | V-Zug AG | Cooking device with user door and with heating for windows in user door |
| US10904961B2 (en) | 2015-03-06 | 2021-01-26 | Whirlpool Corporation | Method of calibrating a high power amplifier for a radio frequency power measurement system |
| US10904962B2 (en) | 2015-06-03 | 2021-01-26 | Whirlpool Corporation | Method and device for electromagnetic cooking |
| US10764970B2 (en) | 2016-01-08 | 2020-09-01 | Whirlpool Corporation | Multiple cavity microwave oven insulated divider |
| US11483905B2 (en) | 2016-01-08 | 2022-10-25 | Whirlpool Corporation | Method and apparatus for determining heating strategies |
| US10820382B2 (en) | 2016-01-28 | 2020-10-27 | Whirlpool Corporation | Method and apparatus for delivering radio frequency electromagnetic energy to cook foodstuff |
| US10827570B2 (en) | 2016-02-15 | 2020-11-03 | Whirlpool Corporation | Method and apparatus for delivering radio frequency electromagnetic energy to cook foodstuff |
| CN109416182A (en) * | 2016-12-06 | 2019-03-01 | 惠而浦公司 | Micro-wave oven with full glass door |
| CN109416182B (en) * | 2016-12-06 | 2021-05-18 | 惠而浦公司 | Microwave oven with full glass door |
| US11246192B2 (en) | 2016-12-06 | 2022-02-08 | Whirlpool Corporation | Microwave oven with full glass door |
| EP3571444A4 (en) * | 2017-01-20 | 2020-09-02 | Whirlpool Corporation | TRANSPARENT CONDUCTIVE DOOR FOR A MICROWAVE FURNACE AND METHOD OF MANUFACTURING ITEM |
| US11558937B2 (en) | 2017-01-20 | 2023-01-17 | Whirlpool Corporation | Transparent conductive door for a microwave oven and methods of making the same |
| US10827569B2 (en) | 2017-09-01 | 2020-11-03 | Whirlpool Corporation | Crispness and browning in full flat microwave oven |
| US11039510B2 (en) | 2017-09-27 | 2021-06-15 | Whirlpool Corporation | Method and device for electromagnetic cooking using asynchronous sensing strategy for resonant modes real-time tracking |
| US10772165B2 (en) | 2018-03-02 | 2020-09-08 | Whirlpool Corporation | System and method for zone cooking according to spectromodal theory in an electromagnetic cooking device |
| US11404758B2 (en) | 2018-05-04 | 2022-08-02 | Whirlpool Corporation | In line e-probe waveguide transition |
| US10912160B2 (en) | 2018-07-19 | 2021-02-02 | Whirlpool Corporation | Cooking appliance |
| US11849526B2 (en) | 2020-03-31 | 2023-12-19 | Midea Group Co., Ltd. | Microwave cooking appliance with increased visibility into the cavity |
| US12200849B2 (en) | 2020-03-31 | 2025-01-14 | Midea Group Co., Ltd. | Microwave cooking appliance with user interface display |
| US12225652B2 (en) | 2020-03-31 | 2025-02-11 | Midea Group Co., Ltd. | Microwave cooking appliance with increased visibility into the cavity |
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