EP3641499A1 - Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren - Google Patents

Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren Download PDF

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Publication number
EP3641499A1
EP3641499A1 EP18306352.8A EP18306352A EP3641499A1 EP 3641499 A1 EP3641499 A1 EP 3641499A1 EP 18306352 A EP18306352 A EP 18306352A EP 3641499 A1 EP3641499 A1 EP 3641499A1
Authority
EP
European Patent Office
Prior art keywords
panel
metallic fabric
stretched
glazing
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18306352.8A
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English (en)
French (fr)
Inventor
Benoit Kolheb
Sébastien GASNIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott VTF SAS
Original Assignee
Schott VTF SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schott VTF SAS filed Critical Schott VTF SAS
Priority to EP18306352.8A priority Critical patent/EP3641499A1/de
Priority to BR112021004879-0A priority patent/BR112021004879B1/pt
Priority to EP19726003.7A priority patent/EP3868177B1/de
Priority to KR1020217013223A priority patent/KR102583658B1/ko
Priority to PCT/EP2019/063713 priority patent/WO2020078593A1/fr
Priority to MX2021002800A priority patent/MX2021002800A/es
Priority to US17/276,663 priority patent/US20220039220A1/en
Priority to CN201980067520.5A priority patent/CN112840743B/zh
Publication of EP3641499A1 publication Critical patent/EP3641499A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a panel absorbing and / or reflecting microwaves, a glazing, preferably for an oven using microwaves, comprising such a panel, and a method for obtaining such a panel and a such glazing.
  • Microwaves are electromagnetic radiation, used in industry in many technical fields. They are also used daily by professionals or individuals, in the field of household appliances, and more particularly heat treatment devices, such as ovens.
  • microwaves there are ovens commonly known as “microwaves” because they only use microwave radiation for heating and rapid cooking of food
  • so-called “combi” ovens because they use microwaves and one or more other sources of production of heat, such as for example an electrical resistance or an infrared source, as opposed to so-called “traditional” ovens using only one type of heat source, such as for example gas or electricity.
  • the ovens using microwaves, generally comprise a cooking enclosure, which confines the radiations, and means for closing an opening by which the products to be heat treated are placed in the oven, which include, or are usually a door, capable of limiting or even preventing the escape of microwaves out of the enclosure.
  • the door includes glazing that is little or not transparent to microwaves by the use of shielding.
  • the means for shielding glazing units comprise or consist of a network of conductors forming a mesh, which has the advantage of retaining a certain optical transparency, in the visible range, and a certain opacity in the microwave.
  • the mesh size of such a network is generally between 1 and 2 mm, which represents 10% of the wavelength of microwaves used in an oven, which have a wavelength of 12 cm for a frequency generally fixed at 2.5 GHz in the most ovens. This allows about 90% of the microwaves generated in the oven to be reflected.
  • the conductor network is, or includes a metal grid.
  • the document DE3714122 describes a microwave oven door comprising a metal shielding grid, fixed to the metal part of the door frame using enamel or paint.
  • the document FR2484397 describes a safety glass for a microwave oven comprising a glass support to which a conductive network is applied, formed by a metallic mesh, covered with a transparent or colored protective enamel layer coated with electrically conductive layers and optically transparent.
  • the document DE202008010620U describes a microwave oven door comprising a metallic fabric disposed between an external window and an internal window, the space being joined using silicone.
  • the glazing is substantially transparent to rays in the visible range, this transparency is greatly reduced by the presence of the anti-microwave shielding, namely the metal grid, and it is very difficult for the user to be able to see easily inside the oven enclosure. Furthermore, not only does such glazing have a perfectly unsightly appearance, it also gives the oven, which includes such glazing, a connotation of "microwave oven", which may prove to be negative for certain users, especially with regard to mixed ovens.
  • the present invention aims to provide a panel absorbing and / or reflecting microwaves, glazing comprising such a panel, and a method of manufacturing such a panel and glazing, which do not have the drawbacks of the state of the technical.
  • the present invention aims to provide an alternative to the solutions of the existing state of the art.
  • the present invention aims to provide a panel absorbing and / or reflecting microwaves and glazing comprising such a panel, the final aesthetic rendering of which is improved.
  • the present invention also aims to provide a method of manufacturing a panel and glazing, in particular for ovens, which is quick and easy to implement.
  • the present invention relates to a glazing panel comprising a rigid support, substantially transparent to radiation in the visible range, and comprising at least one surface, comprising a periphery, and one or more edges, in which at least one surface is covered with 'a metallic fabric in a "stretched" form.
  • the present invention also relates to a glazing unit comprising at least one panel according to the invention and one or more coatings, and / or one or more plates of the same nature and / or characteristics and / or dimension as that (s) of the support.
  • the present invention further relates to means for closing a heat treatment enclosure comprising the glazing according to the invention, and a frame, fixed on and / or surrounding the glazing, and comprising, or cooperating with, hinge means for closing the heat treatment enclosure.
  • the frame is in electrical contact with the metallic fabric.
  • the present invention further relates to a heat treatment device using microwaves comprising a heat treatment enclosure and the sealing means according to the invention.
  • the present invention also relates to a method for producing a panel according to the invention, comprising the steps of taking a rigid support substantially transparent to radiation in the visible range, and comprising at least one surface, a periphery, and one or more several edges, to take a metallic fabric and stretch it to make it pass from a state of "rest” to a “stretched” state, to fix, by means of fixing, the stretched metallic fabric, and the keep stretched, on the surface.
  • the present invention also relates to a method of producing a glazing according to the invention, comprising the steps of taking a panel, produced by implementing the method of producing the panel according to the invention, of taking one or more coatings, and / or one or more coatings, and / or one or more plates of the same nature and / or characteristics and / or dimension as that (s) of the support, to cover all or part of the metallic fabric and / or of the support not covered with the metallic fabric.
  • the present invention also relates to a method of producing sealing means, a heat treatment enclosure, according to the invention, comprising the steps of taking a glazing, produced by implementing the method of producing a glazing according to the invention, taking a frame, fixing it on the glazing, at the level of, or on, the means for fixing the metallic fabric on the support and / or on one or more edges of the support.
  • the present invention also relates to a method for producing a heat treatment device using microwaves comprising the steps of taking the cooking chamber, of taking the sealing means, produced by implementing the method of producing the means. shutter according to the invention, and connecting the shutter means to the enclosure.
  • the term "length” is used to describe the largest of the measurements on one side of any geometric shape, for example the large radius of an ellipsoid or of an ellipse, the base or height of a triangle, the length of a trapezoid or rectangle.
  • the term “width” is used to describe the smallest of the measures, for example the small radius of an ellipsoid or ellipse, the base or height of a triangle, the width of a trapezoid or a rectangle, and the terms “length” and “width” can be used interchangeably, for example to denote the measurement of the radius of a disc, the side of a square.
  • the panel 1 comprises a support 2, which is rigid, substantially inflexible. It has a mechanical resistance to bending and / or torsional stresses, sufficient not to deform under the action of a bending and / or torsional force.
  • the support 2 is substantially planar, and comprises at least a first surface 3, continuous and substantially planar, preferably a second surface 4, continuous and substantially planar, opposite said first surface 3 ( figure 1 ).
  • the support 2 has a shape, a thickness and dimensions which are adequate and suitable, or compatible, with the end use of the panel 1, or of the elements which comprise such a panel 1.
  • the support 2 has a cross section, therefore in the plane formed by the surface 2 or the surface 3, in the XZ plane, of circular, elliptical, polygonal, trapezoidal shape or else of a quadrilateral, advantageously a diamond section , square or rectangular.
  • the support 2 has a longitudinal section, therefore in the XY plane, and / or a cross section, therefore in the YZ plane, perpendicular to the plane formed by the surface 2 or the surface 3, circular, elliptical or polygonal, trapezoidal or else a quadrilateral, advantageously a square or rectangular section, a trapezoid or a rectangular trapezoid.
  • the support 2 is made of an inert material, preferably at least thermally inert, advantageously also physically and chemically inert to the material (s) with one or both of these surfaces 2 and 3 is / are covered ( s) or in contact.
  • the support 2 is preferably transparent, or else partially transparent, optically in the visible range, in its thickness and / or its width and / or its length. It can be sandblasted and / or screen-printed and / or colored on part of one or both of the surfaces 3 and 4.
  • the support 2 is made of, or comprises plastic, glass, a crystalline or semi-crystalline material, a ceramic or a glass-ceramic.
  • the support 2 is glass, preferably a transparent or mass-colored soda-lime glass, possibly with various layers, such as anti-bacterial, anti-reflective, for example of the type known under the brand Matelux®, chrome-plated, with low emissivity, for example of the type known under the name of Planibel Clear or of Planibel low-E IsoComfort, marketed by the company AGC, or a borosilicate for example known under the brand Borofloat® 33
  • the glass has a high SiO 2 content, a content advantageously between 69% and 81% by weight. and with a light transmission of up to 90%.
  • the glass may possibly have previously undergone a heat treatment of the hardening, annealing, tempering, bending type.
  • the panel 1 comprises anti-microwave shielding means comprising a metallic fabric 5, fixed on all or part of one of the surfaces 3 or 4, preferably on the two surfaces 3 and 4 of the support 2, the metallic fabric 5 being in constrained form, preferably in stretched form.
  • the metallic fabric 5 can protrude from one or more edges 8 of the support 2, and also the cover (s), however preferably in a non-stretched form, therefore in the rest state.
  • the panel 1 according to the invention has barrier properties, or reflection of microwaves, preserved or improved, while providing improved optical transparency in the visible range.
  • the metallic fabric 5 is extensible, deformable, and has an adequate stretching capacity allowing it to pass from a "rest" state to a "stretched” state. Preferably, it has a Young's modulus of between 190 and 230 GPa.
  • stretchable threads or fibers advantageously metallic, made or comprising, one or more metals, or one or more alloys of suitable metals, advantageously chosen from silver, chromium, platinum, copper, stainless steel, their alloys or a mixture thereof.
  • the metallic fibers have a warp diameter "d", and a weft diameter "d '", “d” and “d” which may be identical or different between weft and warp, spaced in warp by a distance " w “and in the weft of a distance” w '"," w “and” w' "can be identical or different between weft and warp.
  • the metallic fibers can crisscross in all the suitable weaves, for example in a canvas, twill or satin weave.
  • the metallic fabric 5 is stretched from 0.01 to 5% relative to its state of rest.
  • the tension exerted on the metallic fabric 5, for such stretching is also a function of the nature of the threads composing the metallic fabric 5, of their stretching capacity and their elasticity, and therefore of the stretching capacity and the general elasticity of the metallic fabric 5.
  • the metallic fabric 5 is stretched in at least one direction, advantageously in all directions, namely, for a metallic fabric 5 of substantially square or rectangular shape, depending on its width or weft (plane ZZ 'of the figure 1 ), its length or chain (plane XX 'of the figure 1 ), but preferably not in its thickness (plane YY 'of the figure 1 ).
  • the metallic fabric 5 is stretched, and kept stretched, in all directions of its width and its length, whatever its shape.
  • the metallic fabric 5 is stretched differently on its surface, therefore in the plane it forms, the XZ plane, for example according to a first level of stretching for one or more portions of its periphery, with a central portion not stretched or stretched according to a second level of stretching, lower than the first level of stretching. However, and preferably, it is stretched homogeneously over its entire surface from its central portion to its periphery.
  • the shape of the days, or meshes, of the metallic fabric 5 stretched in the panel 1, and their sizes or dimensions "w" and "w '", in stretched form, is chosen according to the type of microwave to be absorbed or to reflect.
  • the metallic fabric 5 has the same shape of mesh in its stretched state as in its rest state.
  • the mesh is deformed between these two states, a deformation obtained by a difference in stretch over its width and / or its length.
  • the meshes are stretched between 50 and 100%, that is to say that the meshes have dimensions "w" and / or "w '" which are one and a half or two times those of the metallic fabric 5 at rest.
  • the stretched mesh can be a rectangular or lozenge mesh, but it is preferably square, since such a mesh makes it possible to obtain a transparency of the panel 1, and therefore of the device that it includes, the most aesthetic and the most uniform.
  • the metallic fabric 5 at rest comprises square meshes of dimension dimensions "w" and "w '" between 60 to 100 ⁇ m .
  • the metallic fibers are made of stainless steel with an identical diameter "d” and “d '", between 200 and 300 ⁇ m .
  • the percentage of days varies from 35 to 50% and having a fineness between 30 and 120 mesh / inch, namely between 30 and 120 meshes per 25.4mm.
  • the metallic fabric 5 comprises square meshes ( figure 2 ), whose dimensions "w” and “w '” are between 120 and 220 ⁇ m.
  • the metallic fibers have an identical diameter “d” and “d '”, between 50 and 100 ⁇ m .
  • the tension exerted on the metallic fabric 5 to stretch it is from 10 to 25 Newtons.
  • the metallic fabric 5 according to the invention has a fineness of approximately 43 mesh / inch (43 meshes by 25.4 mm), with 46% of days, and comprising square meshes of dimension "d »In warp and" d '"in weft of about 160 ⁇ m, formed by stainless steel wires having a diameter" w "in warp and"w'"in weft of about 70 ⁇ m.
  • the metallic fabric 5, in a stretched form, is fixed, continuously or discontinuously, to the surface (s) 3, 4, using fixing means 6, an adhesive, or an adhesive, compatible with the nature of the metallic fabrics 5, of the support 2, of the final device integrating the panel 1 according to the invention and of its end use.
  • an adhesive having good resistance when subjected to high temperatures, of around 250 ° C.
  • It can be a single component silicone glue, an acetic base silicone glue or neutral base.
  • the metallic fabric 5 is fixed, preferably, on all or part of the periphery 7 of one of the surfaces 3 or 4 ( figure 1 ), preferably a few millimeters, for example 5 to 25mm, from the edges 8 of the support 2, possibly also on one or more edges 8. This has the advantage of making invisible the points or zones of bonding of the metallic fabric 5 in the final device incorporating the panel 1 according to the invention.
  • the panel 1 according to the invention is preferably used in the field of household appliances, advantageously as glazing for a domestic or professional household appliance, even more advantageously as glazing for a door of a microwave or combi oven .
  • the glazing according to the invention comprises the panel 1 according to the invention, which further comprises one or more coatings, or films, superimposed or arranged adjacent, covering all or part of the metallic fabric 5 and of the support 2, of preferably with the exception of the metallic fabric 5 protruding from the edge or edges 8 of the support 2.
  • the coatings or films have adequate dimensions and thicknesses and preferably particular properties, which are advantageously dependent on the end use of the glazing or of the device or means comprising the glazing. It can be a protective coating, preferably thermal protection, and / or anti-condensation.
  • the panel 1 may further comprise a transparent plate or sheet of the same nature, characteristics and dimensions as those forming the support 2, disposed on the metallic fabric 5, on the coating or coatings covering the metallic fabric 5 and / or on the surface 3 of the support 2.
  • the panel 1 according to the invention is preferably used as means for closing off a heat treatment enclosure, for example as the door of a microwave or combi-oven.
  • the sealing means according to the invention comprise the glazing according to the invention and a frame, in one piece or be made of an assembly of frame elements, fixed on, or surrounding the glazing, and comprising, or cooperating with, hinge means for closing the heat treatment enclosure.
  • the frame has all the shapes and dimensions adapted to the enclosure which it must seal, to the glazing and to the panel 1 according to the invention.
  • the frame is positioned at the level, preferably covers the fastening means 6 of the metallic fabric 5 on the support 2, therefore the periphery 7 of one of the surfaces 3 or 4 of the support 2, which has the advantage to make the fastening means 6 invisible.
  • the frame can also cover one or more edges of the glazing and therefore one or more edges 8 of the panel 1, optionally comprising the portion or portions of the metallic fabric 5 projecting from the support 2.
  • the frame is made, or includes, all suitable materials, compatible with its end use, in particular with its use as an oven door.
  • the frame is in electrical contact with the metallic fabric 5, at least with its portion covering the surface (s) 3, 4 and / or that projecting or covering one or more edges 8 of the support 2.
  • This electrical contact has the advantage of dissipating microwave radiation.
  • the heat treatment device comprises a cooking enclosure and the sealing means according to the invention.
  • a cooking enclosure Preferably, it is a so-called microwave oven or a mixed oven.
  • the present invention also relates to a method of producing a panel 1 according to the invention.
  • the method includes the step of taking, or making, the support 2 and the metallic fabric 5 as described above.
  • the metal fabric 5 is placed in its rest state on a table provided with stretching means, for example a table provided with jaws over its entire periphery, and the fabric is fixed in these stretching means.
  • a table provided with stretching means for example a table provided with jaws over its entire periphery
  • the metallic fabric 5 is stretched in at least one direction, preferably in all directions, namely over its length and / or its width, and maintained in a stretched state, preferably from 0.01 to 5% relative to its resting state.
  • the stretching of the metallic fabric 5 is obtained by applying a force of between 5 and 25 Newtons.
  • the method may further comprise the attachment to the metallic fabric 5 of one or more separating elements, making it possible to delimit at least one, preferably several zones of metallic fabric 5 stretched, and its cutting along the separator (s). This has the advantage of having stretched portions of metallic fabric 5 and therefore of facilitating their handling for the implementation of the other steps of the process.
  • the size and dimensions of the separator (s) depend on those of the support 2 and therefore those of the panel 1.
  • the method comprises the step of taking, or producing, a support 2 as described above, of depositing fixing means 6, on all or part of the periphery 7 of one of the surfaces 3 or 4, preferably a few millimeters of the edges 8 of the support 2, possibly also on one or more of the edges 8.
  • the application of the fastening means 6 uses a pneumatic gun, which has the advantage of gaining precision and obtaining a better homogeneity of the fixing means 6 on the surface or surfaces 3, 4.
  • the stretched metal fabric 5, or a portion of the latter, provided with its separating element or elements, is brought into contact with the support 2 provided with the means fixing 6.
  • the stretched metal fabric 5, or one of these portions is placed on the support 2.
  • pressure is exerted on the metal fabric 5, so that the means of fixation 6 penetrate into, and preferably pass through, these meshes.
  • the method further comprises a step of removing the separating element or elements from the stretched metallic fabric 5.
  • the method may further comprise a step of cutting the metallic fabric 5 projecting beyond the edges 8 of the support 2, preferably leaving a margin relative to said edges 8, which is a function of the end use of the panel according to the invention.
  • this margin will be approximately 5 to 25 mm.
  • the method of producing the glazing according to the invention comprises the step of taking, or making, the panel 1 according to the invention, preferably made according to the method described above, a step of taking, or making, one or more coatings, or films, and / or one or more plates, or sheets, transparent, of the same nature, characteristics and dimensions as those forming the support 2, a step of covering all or part of the metallic fabric 5 and / or of the support 2, so superimposed or adjacent, and / or on the surface or surfaces 3, 4 of the support 2 not covered with the metallic fabric 5, but preferably with the exception of the margin of metallic fabric 5 extending beyond the edges 8 of the support 2.
  • the application of the coating (s), films, plates or sheets can be done by any suitable method.
  • the method for producing means for closing a heat treatment enclosure comprises the step of taking or producing a glazing according to the invention, preferably manufactured according to the method described above, to take or make a one-piece frame, or made of an assembly of frame elements, and to fix the frame on the glazing, preferably at, or on the fixing means 6 metallic fabric 5 on the support 2 and / or one or more edges of the glazing.
  • the method further comprises a step of taking, or producing, means forming a hinge and of fixing them to the frame, before or after the setting of the frame on the glazing.
  • the method for producing a heat treatment device comprises the step of taking, or making a cooking chamber, preferably hermetic, or substantially hermetic, in the microwave, the step of taking, or making the means of sealing according to the invention, preferably made using the method described above, and a step of connecting the sealing means to the enclosure.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Surface Treatment Of Glass (AREA)
  • Laminated Bodies (AREA)
EP18306352.8A 2018-10-15 2018-10-15 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren Withdrawn EP3641499A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP18306352.8A EP3641499A1 (de) 2018-10-15 2018-10-15 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren
BR112021004879-0A BR112021004879B1 (pt) 2018-10-15 2019-05-28 Painel, envidraçamento, meios para fechar uma câmara de tratamento térmico, dispositivo, método de fabrico de um painel, método de fazer um envidraçamento, método de criar meios para fechar uma câmara de tratamento térmico e método para criar um dispositivo
EP19726003.7A EP3868177B1 (de) 2018-10-15 2019-05-28 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren
KR1020217013223A KR102583658B1 (ko) 2018-10-15 2019-05-28 마이크로파 반사 패널, 패널 구성 요소 및 획득 방법
PCT/EP2019/063713 WO2020078593A1 (fr) 2018-10-15 2019-05-28 Panneau reflechissant les micro-ondes, elements comprenant un tel panneau et leur methode d'obtention
MX2021002800A MX2021002800A (es) 2018-10-15 2019-05-28 Panel reflectante de microondas, elementos que constituyen dicho panel y metodo para obtenerlos.
US17/276,663 US20220039220A1 (en) 2018-10-15 2019-05-28 Microwave reflective panel, elements comprising such a panel, and method for obtaining them
CN201980067520.5A CN112840743B (zh) 2018-10-15 2019-05-28 微波反射面板、包括这种面板的元件和元件的获取方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18306352.8A EP3641499A1 (de) 2018-10-15 2018-10-15 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren

Publications (1)

Publication Number Publication Date
EP3641499A1 true EP3641499A1 (de) 2020-04-22

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Family Applications (2)

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EP18306352.8A Withdrawn EP3641499A1 (de) 2018-10-15 2018-10-15 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren
EP19726003.7A Active EP3868177B1 (de) 2018-10-15 2019-05-28 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19726003.7A Active EP3868177B1 (de) 2018-10-15 2019-05-28 Paneel zum reflektieren der mikrowellen, elemente, die ein solches paneel umfassen, und ihr herstellungsverfahren

Country Status (7)

Country Link
US (1) US20220039220A1 (de)
EP (2) EP3641499A1 (de)
KR (1) KR102583658B1 (de)
CN (1) CN112840743B (de)
BR (1) BR112021004879B1 (de)
MX (1) MX2021002800A (de)
WO (1) WO2020078593A1 (de)

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CN107218638B (zh) * 2017-06-08 2019-09-20 广东美的厨房电器制造有限公司 一种微波屏蔽板及微波烹饪装置
US11765796B2 (en) 2020-03-31 2023-09-19 Midea Group Co., Ltd. Microwave cooking appliance with leak detection
US11770882B2 (en) 2020-03-31 2023-09-26 Midea Group Co., Ltd. Microwave cooking appliance with user interface display
US11849526B2 (en) 2020-03-31 2023-12-19 Midea Group Co., Ltd. Microwave cooking appliance with increased visibility into the cavity
WO2024068051A1 (fr) * 2022-09-26 2024-04-04 Schott Vtf Panneau, vitrage et moyens d'obturation, d'un dispositif de traitement thermique utilisant les micro-ondes

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FR2484397A1 (fr) 1980-06-16 1981-12-18 Trois Fontaines Verreries Verre de securite pour appareil a micro-ondes
DE3714122A1 (de) 1987-04-28 1988-11-10 Miele & Cie Verfahren zur herstellung einer tuer fuer einen mikrowellenherd
GB2322276A (en) * 1996-12-13 1998-08-19 Raytheon Appliances Inc Oven door with microwave absorbing and reflecting means
JP2005273977A (ja) * 2004-03-24 2005-10-06 Hitachi Home & Life Solutions Inc 加熱調理器
DE202008010620U1 (de) 2008-08-11 2008-10-23 Deutsche Mechatronics Gmbh Türanordnung für einen Mikrowellenofen und zugehörige Scheibe
US20180054860A1 (en) * 2016-08-22 2018-02-22 Samsung Electronics Co., Ltd. Cooking appliance, door for cooking appliance and method for manufacturing door of cooking appliance

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CA1038045A (en) * 1974-12-09 1978-09-05 Junzo Tanaka Transparent shielded door screen for microwave oven
DE2847486A1 (de) * 1978-11-02 1980-05-14 Bayer Ag Verwendung von metallisierten textilen flaechengebilden als strahlenschutz gegen mikrowellen
JP2001237061A (ja) * 2000-02-22 2001-08-31 Goh Shoji Co Inc 電子レンジ
CN101316500A (zh) * 2007-06-01 2008-12-03 哈尔滨工业大学 金属丝网透明电磁屏蔽层材料的制备方法
KR20140014430A (ko) * 2012-07-24 2014-02-06 동부대우전자 주식회사 전자레인지의 도어

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Publication number Priority date Publication date Assignee Title
FR2484397A1 (fr) 1980-06-16 1981-12-18 Trois Fontaines Verreries Verre de securite pour appareil a micro-ondes
DE3714122A1 (de) 1987-04-28 1988-11-10 Miele & Cie Verfahren zur herstellung einer tuer fuer einen mikrowellenherd
GB2322276A (en) * 1996-12-13 1998-08-19 Raytheon Appliances Inc Oven door with microwave absorbing and reflecting means
JP2005273977A (ja) * 2004-03-24 2005-10-06 Hitachi Home & Life Solutions Inc 加熱調理器
DE202008010620U1 (de) 2008-08-11 2008-10-23 Deutsche Mechatronics Gmbh Türanordnung für einen Mikrowellenofen und zugehörige Scheibe
US20180054860A1 (en) * 2016-08-22 2018-02-22 Samsung Electronics Co., Ltd. Cooking appliance, door for cooking appliance and method for manufacturing door of cooking appliance

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Publication number Publication date
EP3868177A1 (de) 2021-08-25
WO2020078593A1 (fr) 2020-04-23
KR20210062077A (ko) 2021-05-28
CN112840743B (zh) 2023-10-31
CN112840743A (zh) 2021-05-25
BR112021004879B1 (pt) 2024-04-30
EP3868177B1 (de) 2024-01-03
US20220039220A1 (en) 2022-02-03
BR112021004879A2 (pt) 2021-06-01
MX2021002800A (es) 2021-05-12
KR102583658B1 (ko) 2023-09-27

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