EP3868177A1 - Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau et leur méthode d'obtention - Google Patents
Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau et leur méthode d'obtentionInfo
- Publication number
- EP3868177A1 EP3868177A1 EP19726003.7A EP19726003A EP3868177A1 EP 3868177 A1 EP3868177 A1 EP 3868177A1 EP 19726003 A EP19726003 A EP 19726003A EP 3868177 A1 EP3868177 A1 EP 3868177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metallic fabric
- panel
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000004744 fabric Substances 0.000 claims abstract description 105
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims description 52
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000010411 cooking Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 30
- 239000002184 metal Substances 0.000 abstract description 30
- 239000011248 coating agent Substances 0.000 description 12
- 239000011521 glass Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229920000914 Metallic fiber Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000005352 borofloat Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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 and shutter means for an oven using microwaves, comprising such a panel, and a method of obtaining a such a panel, and such glazing and such shutter means.
- 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, and so-called “mixed” or “combined” ovens because they use microwaves and one or more other sources of heat production, such as for example an electrical resistance or an infrared source, in opposition to so-called “traditional” ovens using only one type of heat source, such as for example gas or electricity.
- the ovens using microwaves, generally include a cooking chamber, which confines the radiation, and means for closing an opening through which the products to be heat treated are placed in the oven, which comprise, or are, usually a door, capable of limiting or 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 to micro- waves.
- 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 shielding means can be a metal grid, fixed to the metal part of the frame of the microwave oven door, using enamel or paint, as described in document DE3714122, or else a wire mesh, arranged between an outer pane and an inner pane, the space being joined using silicone, or alternatively an expanded metal plate, obtained by shearing and concomitant stretching of a metal plate, to form a lattice metallic having a hexagonal or diamond-shaped pattern, as described in the document JP 2005273977, or else a metallic fabric, woven from conductive wires, as described in the document US2018054860.
- the shielding means can also be a network of conductors, obtained by screen printing on a glass support, and which is covered with a transparent or colored protective enamel layer coated with electrically conductive and transparent layers of the optically, as described in document FR2484397.
- the glazing of microwave ovens 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 easily see the interior of 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 in the case of ovens mixed.
- the document GB2322276 describes the combined use of a wire mesh, reflecting microwave energy, with a plastic film absorbing microwave energy. Aims of the invention
- 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 art.
- the present invention aims to provide an alternative to existing state of the art solutions.
- 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 panel for glazing 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 the panel comprises a metallic fabric stretched over at least one of the surfaces.
- the panel according to the invention comprises at least one, or any suitable combination, of the following characteristics:
- the metallic fabric, stretched comprises a percentage of stretching, in the weft and / or warp direction, between 0.01 to 5% relative to its "rest" state,
- the metallic fabric is stretched under a tension of between 5 and 25 Newtons
- the metallic fabric is fixed, using fixing means, on all or part of the periphery of at least one surface of the support,
- the stretched metallic fabric (5) comprises square meshes of which the warp distance "w" and / or the weft distance of "w '" is between 120 and 220 mm
- the present invention also relates to a glazing unit comprising at least one panel according to the invention.
- the present invention further relates to sealing means of a heat treatment chamber comprising the glazing according to the invention, and a frame, fixed on and / or surrounding the glazing, the frame being in contact electric with the metallic fabric and comprising, or cooperating with, hinge means allowing the obturation of the heat treatment enclosure.
- the present invention further relates to a heat treatment device using microwaves comprising a heat treatment chamber and the sealing means according to the invention.
- the present invention also relates to a method of 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, one periphery, and one or more edges, to take a metallic fabric in a state of "rest”, to stretch it to make it pass from the state of "rest” to a state “stretched”, and to keep it stretched, to fix, at the With the aid of fixing means, the metallic fabric, kept stretched, over all or part of the at least one surface, so as to keep it stretched over the surface.
- the method of producing the panel according to the invention comprises at least one, or any suitable combination, of the following characteristics:
- the step of stretching the metallic fabric is done in the weft and / or warp direction, the stretching of the metallic fabric being between 0.01 to 5% relative to a "rest" state,
- the method further comprises a step of fixing, on the metallic fabric, one or more separating elements delimiting a plurality of zones of stretched metallic fabric, and a step of cutting out the stretched metallic fabric, along the separators.
- the present invention also relates to a method of producing a glazing unit 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 or producing one or more coatings, to take or produce 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 or all or part of the surface (s) of the support not covered by the metallic fabric, or both at the same time, with the coating (s), with the plate (s), or, at the same time, with one or more coverings and one or more plates, the cover (s) being arranged adjacent to or superposed with respect to each other, the plate (s) being placed adjacent or superimposed relative to each other, or the coating or coatings being arranged adjacent to or superimposed on the plate or plates, the coating or coatings being disposed on the plate or plates, or vice versa, the plate or plates being arranged on the coating or coatings.
- the present invention further 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 for producing a glazing unit according to the invention, take a frame, fix it on the glazing unit, at or on the means of fixing the metallic fabric to the support and / or on one or more edges of the support so that the frame is in electrical contact with the metallic fabric.
- the present invention also relates to a method of producing a heat treatment device using microwaves comprising the steps of taking the cooking chamber, taking the sealing means, produced by implementing the method of realization of the closure means according to the invention, and of connecting the closure means to the enclosure.
- Figure 1 is a schematic representation of a side view of a panel according to the invention.
- Figure 2 is a schematic representation of a top view of a particular embodiment of the metallic fabric, in stretched form, according to the invention.
- 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 a 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.
- front refers to the normal position of the panel according to the invention, and of its constituent elements, as shown in Figure 1.
- the panel 1 according to the invention 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 has an adequate and suitable shape, thickness and dimensions, or compatible with the end use of the panel 1, or of elements which include such a panel 1.
- the support 2 comprises at least one upper surface 3, continuous and substantially planar, preferably also a lower surface 4, continuous and substantially planar, opposite the upper surface 3 ( Figure 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, circular, elliptical, polygonal, trapezoidal or even a quadrilateral, advantageously a diamond, square or rectangular section.
- 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 comprises at least a first lateral edge 8, and in the embodiments in which it has a transverse and / or longitudinal parallelepipedal section, for example square (s) or rectangular (s), it comprises a second lateral edge 9, opposite the first lateral edge 8, a front edge 10 and a rear edge 11, opposite the front edge 10.
- the support 2 is made of an inert material, preferably at least thermally inert, advantageously also physically and chemically inert to the material (s), one or both of these surfaces 2 and 3 is / are covered or in contact.
- the support 2 is preferably transparent, or 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 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 soda-lime glass transparent or tinted in the mass, possibly with various layers, such as anti-bacterial, anti-reflective, by 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 Si0 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.
- the metallic fabric 5 is stretched over the surface or surfaces 3, 4. It is in a stretched form between the edges 8, 9, 10, 11 of the support 2.
- the metallic fabric 5 is in an elongated form on the support 2. It undergoes, on the support 2, the action of one or several traction forces, continuously, even when it covers the surface (s) 3, 4.
- the metal fabric 5 may 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 microwave reflection, preserved or improved, while providing optical transparency in the visible range, improved.
- the metallic fabric 5 according to the invention is deformable, in particular it is elastically extensible. It has an adequate stretching capacity allowing it to pass from its "rest” state, when it is not installed on the support 2, to its "stretched” state once it covers the surface (s) 3, 4. It also has elasticity properties allowing it to regain, at least partially, its shape and size, after having lost them by extension. Consequently, due to its elasticity, the metallic fabric 5 is stretched on the support 2, and is subjected, within the panel, to tensile forces created by the tendency of the metallic fabric 5 to return to its state of rest.
- it has a Young's module between 190 and 230 GPa.
- 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 a distance "w” and in the frame of a distance "w '", “w” and “w'” can be identical or different between frame 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 rest state.
- the tension exerted on the metallic fabric 5, for such stretching is also a function of the nature of the threads making up the metallic fabric 5, of their stretching capacity and of their elasticity, and therefore of the stretching capacity and the general elasticity of the metallic fabric 5.
- a metallic fabric 5 of substantially square or rectangular shape, depending on its width or weft (plane Z-Z 'of the figure 1), its length or chain (plane X-X 'in Figure 1), but preferably not in its thickness (plane Y-Y' in Figure 1).
- the metallic fabric 5 is stretched, and kept stretched on the surface or surfaces 3, 4 of the support 2, in all directions of its width and its length, whatever either its shape.
- the metallic fabric 5 is stretched differently on its surface 3, 4, therefore in the plane it forms, the XZ plane, for example according to a first level of stretching for one or more portions from 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 absorb or 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 stretching 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 metallic fabric 5 at rest.
- the stretched mesh can be a rectangular or lozenge-shaped mesh, but it is preferably square, because 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 dimension "w" and "w '" between 60 to 100 mites.
- the metal fibers are made of stainless steel with an identical diameter "d” and "d '", between 200 and 300 ⁇ m.
- the percentage of day varies from 35 to 50% and having a fineness between 30 and 120 mesh / inch, namely between 30 and 120 meshes by 25.4mm.
- the metallic fabric 5 comprises square meshes (FIG. 2), the dimensions of which “w” and “w ′” are between 120 and 220 ⁇ m.
- the metal fibers have an identical diameter "d” and "d '", between 50 and 100 ⁇ m.
- the tension exerted on the metal fabric 5 to stretch it, and keep it stretched on the support 2 is from 5 to 25 Newtons.
- the metallic fabric 5 according to the invention has a fineness of about 43 mesh / inch (43 meshes by 25.4mm), with 46% of days, and comprising square meshes of a dimension "d" in warp and "d '" in weft of about 160 miti, formed by stainless steel wires having a diameter "w" in warp and "w'" in weft of about 70 miti.
- the metallic fabric 5, in a stretched form, is fixed, continuously or discontinuously, to the surface or surfaces 3, 4, using fixing means 6, an adhesive, or an adhesive, compatible with the nature of the metallic fabric 5, of the support 2, of the final device integrating the panel 1 according to the invention and of its end use.
- it is a glue with good resistance when it is subjected to high temperatures, of around 250 ° C.
- It can be a single component silicone glue, an acetic based silicone glue or neutral base.
- the metal 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 areas of bonding of the metallic fabric 5 in the final device integrating 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 the glazing of an appliance domestic or professional household appliances, 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, It may further comprise one or more coatings, or films, superimposed or arranged adjacent to each other, covering all or part of the metallic fabric 5 and / or the surface (s) 2, 3, or portions of the surfaces 2, 3 of the support 2, not covered with the metallic fabric 5, preferably with the exception of the metallic fabric 5 projecting from the edge (s) 8 of the support 2.
- the coatings or films have adequate dimensions and thicknesses and preferably special properties, which are advantageously a function of 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 plate, or sheet, transparent, of the same kind, same characteristics and dimensions as those forming the support 2, disposed on the metal fabric 5, on the coating or coatings covering the metal fabric 5 and / or on the surface or surfaces 3, 4 of the support 2.
- the other surface can be covered by one or more coatings arranged adjacent or superimposed relative to each other or by one or more plates arranged adjacent to or superimposed with respect to each other, or alternatively by one or more coverings and one or more plates, the plate or plates being arranged adjacent or superimposed with respect to the coating (s) or the coating (s) covering the plate (s).
- the glazing can be a multilayer product, comprising either a alternating coatings and plates, either one or more coatings on one or more plates, or conversely, one or more plates on one or more coatings.
- the coating (s) or the plate (s) can cover either the metallic fabric 5 or the surface 3 and / or 4 comprising no metallic fabric 5, or both. If a first or a first series of coatings, or a first or a first series of plates, cover only part of the metallic fabric 5, a second or a second series of coatings, or a or a second series of plates can cover the rest of the metallic fabric 5, and possibly also the first or first series of coatings or first or first series of plates. It is also possible to provide for a third or third series of coatings, or a or third series of plates, covering all or part of the first series and / or second series of coatings and / or plates.
- 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, means forming a hinge allowing the obturation of 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 level, preferably covers the fastening means 6 of the metal 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 of making the fixing 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 or surfaces 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 microwave oven or a combi 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 metal fabric 5 is elongated 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% by compared to his 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 areas of stretched metallic fabric 5, and its cutting along the separator (s) .
- This has the advantage of having portions of stretched 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) are a function of 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 fastening means 6, on all or part of the periphery 7 of one of the surfaces 3 or 4, preferably a few millimeters from the edges 8 of the support 2, possibly also on one or more of the edges 8.
- the application of the fixing means 6 implements a gun pneumatic, which has the advantage of gaining precision and obtaining better homogeneity of the fastening means 6 on the surface or surfaces 3, 4.
- the stretched metal fabric 5, or a portion of the latter, provided with its or these separating elements, is brought into contact with the support 2 provided with fixing means 6.
- the stretched metal fabric 5, or one of these portions which is placed on the support 2.
- pressure is exerted on the metal fabric 5, so that the fastening means 6 penetrate into, and preferably pass through, these meshes.
- the method further comprises a step of removing the separator or elements of the stretched metal 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 by 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 making 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 several coatings, or films, and / or one or more plates, or sheets, transparent, of the same nature, same characteristics and dimensions as those forming the support 2, a step of covering all or part of the metallic fabric 5 and / or all or part of one or more surfaces 3,4 of the support 2 not covered by the metal fabric (5), using the coating or coatings or one or more plates.
- the metal fabric 5 covers only one of the surfaces 3 or 4 of the support 2, it is possible to cover the other surface 3 or 4 with one or more coatings arranged adjacent or superimposed relative to each other to the others, or by one or more plates arranged adjacent or superimposed with respect to each other, or by both, one or more coatings and one or more plates, the plate or plates being arranged so adjacent (s) or superimposed with respect to the coating (s), or the coating (s) covering the plate (s).
- the metallic fabric 5 completely covers one or both surfaces 3, 4 at the same time, it is possible to cover it partially or totally, preferably with the exception of the metallic fabric 5 extending beyond the edges 8 of the support 2, by a first or a first series of coatings, or one or a first series of plates, then covering it or them with a second or a second series of coatings, or one or more other plates, in order to obtain a multilayer product , comprising either a succession of layers of coatings or a succession of plates, or an alternation of coatings and plates, or one or more coatings on one or more plates, or conversely, one or more plates on one or more coatings.
- the metallic fabric 5 partially covers one or both surfaces 3, 4 at the same time, it is possible to cover it and / or cover the surfaces 3, 4 not covered by the metallic fabric 5, by a or several coatings or by one or more plates. If a first or a first series of coatings, or a first or a first series of plates, cover only part of the metallic fabric 5, it is possible to cover the rest of the metallic fabric 5, and possibly also the first or first series of coatings or first or first series of plates, using a second or second series of coatings, or a or second series of plates. It is also possible to cover all or part of the first series and / or second series of coatings and / or plates using a third or a third series of coatings, or a or third series of plates.
- the application of the coating (s), films, plates or sheets can be done by any suitable method.
- the method of producing means for closing a heat treatment chamber, in particular of a door of a microwave or combi oven 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 to the glazing, preferably at, or on, the means fixing 6 of the metallic fabric 5 to the support 2 and / or one or more edges of the glazing.
- the method further comprises a step of taking, or making, hinge means and fixing them on the frame, before or after the installation of the frame on the glazing.
- the method of producing a heat treatment device comprises the step of taking, or making a cooking chamber, preferably airtight, or substantially airtight, in the microwave, the step of taking, or making the sealing means according to the invention, preferably made using the method described above, and a step of connecting the sealing means to the enclosure.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18306352.8A EP3641499A1 (fr) | 2018-10-15 | 2018-10-15 | Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau, et leur méthode d'obtention |
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3868177A1 true EP3868177A1 (fr) | 2021-08-25 |
EP3868177B1 EP3868177B1 (fr) | 2024-01-03 |
Family
ID=63965574
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18306352.8A Withdrawn EP3641499A1 (fr) | 2018-10-15 | 2018-10-15 | Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau, et leur méthode d'obtention |
EP19726003.7A Active EP3868177B1 (fr) | 2018-10-15 | 2019-05-28 | Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau et leur méthode d'obtention |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18306352.8A Withdrawn EP3641499A1 (fr) | 2018-10-15 | 2018-10-15 | Panneau réfléchissant les micro-ondes, éléments comprenant un tel panneau, et leur méthode d'obtention |
Country Status (9)
Country | Link |
---|---|
US (1) | US20220039220A1 (fr) |
EP (2) | EP3641499A1 (fr) |
KR (1) | KR102583658B1 (fr) |
CN (1) | CN112840743B (fr) |
BR (1) | BR112021004879B1 (fr) |
ES (1) | ES2974453T3 (fr) |
MX (1) | MX2021002800A (fr) |
PL (1) | PL3868177T3 (fr) |
WO (1) | WO2020078593A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US11849526B2 (en) | 2020-03-31 | 2023-12-19 | Midea Group Co., Ltd. | Microwave cooking appliance with increased visibility into the cavity |
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 |
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 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010343A (en) * | 1974-12-09 | 1977-03-01 | Matsushita Electric Industrial Co., Ltd. | Microwave ovens |
DE2847486A1 (de) * | 1978-11-02 | 1980-05-14 | Bayer Ag | Verwendung von metallisierten textilen flaechengebilden als strahlenschutz gegen mikrowellen |
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 |
US5981927A (en) * | 1996-12-13 | 1999-11-09 | Osepchuk; John | High visibility microwave oven door with screen and microwave absorbing material |
JP2001237061A (ja) * | 2000-02-22 | 2001-08-31 | Goh Shoji Co Inc | 電子レンジ |
JP2005273977A (ja) * | 2004-03-24 | 2005-10-06 | Hitachi Home & Life Solutions Inc | 加熱調理器 |
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 |
DE202008010620U1 (de) | 2008-08-11 | 2008-10-23 | Deutsche Mechatronics Gmbh | Türanordnung für einen Mikrowellenofen und zugehörige Scheibe |
KR20140014430A (ko) * | 2012-07-24 | 2014-02-06 | 동부대우전자 주식회사 | 전자레인지의 도어 |
KR102527643B1 (ko) * | 2016-08-22 | 2023-05-03 | 삼성전자주식회사 | 조리기기, 조리기기용 도어 및 조리기기의 도어의 제조방법 |
-
2018
- 2018-10-15 EP EP18306352.8A patent/EP3641499A1/fr not_active Withdrawn
-
2019
- 2019-05-28 US US17/276,663 patent/US20220039220A1/en active Pending
- 2019-05-28 EP EP19726003.7A patent/EP3868177B1/fr active Active
- 2019-05-28 CN CN201980067520.5A patent/CN112840743B/zh active Active
- 2019-05-28 MX MX2021002800A patent/MX2021002800A/es unknown
- 2019-05-28 KR KR1020217013223A patent/KR102583658B1/ko active IP Right Grant
- 2019-05-28 PL PL19726003.7T patent/PL3868177T3/pl unknown
- 2019-05-28 WO PCT/EP2019/063713 patent/WO2020078593A1/fr unknown
- 2019-05-28 ES ES19726003T patent/ES2974453T3/es active Active
- 2019-05-28 BR BR112021004879-0A patent/BR112021004879B1/pt active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR20210062077A (ko) | 2021-05-28 |
PL3868177T3 (pl) | 2024-09-30 |
BR112021004879B1 (pt) | 2024-04-30 |
ES2974453T3 (es) | 2024-06-27 |
US20220039220A1 (en) | 2022-02-03 |
EP3641499A1 (fr) | 2020-04-22 |
MX2021002800A (es) | 2021-05-12 |
BR112021004879A2 (pt) | 2021-06-01 |
WO2020078593A1 (fr) | 2020-04-23 |
EP3868177B1 (fr) | 2024-01-03 |
CN112840743B (zh) | 2023-10-31 |
CN112840743A (zh) | 2021-05-25 |
KR102583658B1 (ko) | 2023-09-27 |
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