WO2023025993A1 - Culinary item for a microwave oven - Google Patents
Culinary item for a microwave oven Download PDFInfo
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- WO2023025993A1 WO2023025993A1 PCT/FR2021/051958 FR2021051958W WO2023025993A1 WO 2023025993 A1 WO2023025993 A1 WO 2023025993A1 FR 2021051958 W FR2021051958 W FR 2021051958W WO 2023025993 A1 WO2023025993 A1 WO 2023025993A1
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- radius
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- cookware
- container
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/027—Cooking- or baking-vessels specially adapted for use in microwave ovens; Accessories therefor
Definitions
- the present invention relates to the field of containers that can be used in microwave ovens, and relates more particularly to a cookware comprising a stainless steel container intended to be used to heat food in a microwave oven.
- Microwave ovens generate electromagnetic waves that agitate the water molecules inside the food, causing a rapid and local rise in temperature. This process does not allow the use of all types of containers. Indeed, some plastics, polystyrene or terracotta cannot or are not suitable for heating food in microwave ovens.
- the containers used in microwave ovens are made of glass or plastic.
- containers or accessories made of metal in particular stainless steel
- Such articles are known to those skilled in the art, such as for example those described in patent applications US2017202393 or EP313725.
- US2017202393 or EP313725 a metal container for microwaves.
- a culinary item intended to be used in a microwave oven comprising a container made of metallic material (which can preferably be integrally molded), with an interior surface adapted to receiving food and an outer surface, the container comprising: - a bottom of a shape adapted to bear at least partially on a work surface and whose outline is symmetrical and describes a circle, or a substantially rectangular shape, and
- junction area or connection, rising from said bottom and having a curved shape oriented so that said inner surface is concave at said junction area
- the cooking utensil according to the invention being characterized in that the container is made of stainless steel, and in that :
- the upper zone has a substantially curved shape oriented so that the outer surface is concave at the level of the upper zone, and in the upper zone,
- the outer surface has a first zone having a first radius of curvature R and a second zone having a second radius of curvature R', the first zone representing at least 10% of the second contour C2 and the progression from R' to R between said second zone and said first zone being homogeneous and regular, the first zone representing at least 10% of the second contour C2, and preferably between 10% and 20% of the second contour C2 when the shape is circular and preferably between 25% and 30% when the shape is rectangular, and the progression from R' to R between the second zone and the first zone being homogeneous and regular, and
- the container of the cookware according to the invention therefore has an overall shape having perfectly continuous flowing lines.
- the container according to the invention of metallic nature and having rounded and continuous shapes, can be used both in a microwave oven and in a freezer.
- a ratio R/R,' of the first radius of curvature R to the second radius of curvature R', of between 1.5 and 15, and preferably between 1.875 and 12.5 has the effect that the wall side has an enlarged neck in the upper area, which allows good circulation of waves and heat inside the container.
- the inner surface may have in section the shape of a truncated torus of third radius r or else, when the first contour C1 describes a substantially rectangular shape, the inner surface may comprise four lower rounded corners each having the shape of a spherical cap of third radius r, with r between 10 mm and 50 mm.
- junction zone has the shape of a truncated torus (Circular outline) or has four corners in the shape of a spherical cap (Rectangular outline) makes it possible to avoid the presence of a sudden break in the profile between the side wall and the bottom of the container.
- the side wall can be a truncated cone of revolution whose height passes through the center O of the first contour C1 when the latter describes a circle, or
- the side wall may be a truncated pyramid comprising four inclined walls each rising from each of the lower rounded corners when the first contour C1 describes a substantially rectangular shape
- the angle a of between 80 and 88 degrees of angle has the effect of allowing the evacuation of electrical charges outside the container; such a range of variation of the value of the angle a also makes it possible to optimize the stacking of boxes of the same format one inside the other and thus to optimize the costs and the size (logistics, storage at the user's, etc. ).
- said second contour C2 can describe a substantially rectangular or circular shape.
- the outer surface may comprise two adjacent first upper rounded corners having the shape of a spherical cap of first radius R and defining a first upper side and two second upper rounded corners having the shape of a spherical cap of second radius R' and being opposite said first upper rounded corners by defining a second upper side opposite said first upper side.
- the second contour C2 may have a length L2 or a diameter D2 (depending on whether the second contour C2 is substantially rectangular or is circular), which are such that L2 or D2 are at least equal to 1.3 xh, and preferably at least equal to 3 ⁇ h. This also has the effect of preventing any accumulation of electrical charges inside the container.
- the side wall can have a height h from the bottom of between 30 and 150 mm
- ferritic or non-ferritic (in particular austenitic) stainless steels we can use ferritic or non-ferritic (in particular austenitic) stainless steels, depending on whether it is desired to make a container with deep or shallow drawing.
- non-ferritic (so-called austenitic) stainless steels use will preferably be made in the context of the present invention of stainless steel INOX 304 according to the American standard AISI (comprising 18% Cr and 8% nickel , and corresponding to AFNOR reference Z7CN18-09), allowing deep drawing.
- stainless steel INOX 430 according to the American standard AISI (comprising 18% Cr, and corresponding to the AFNOR reference Z8C17) will preferably be used in the context of the present invention.
- Such steel has the advantage of being less expensive on the other hand it has a low ability to stretch, which is a problem when it is desired to produce containers of high height, in particular capable of fitting together.
- the ratio of the height h to the value of the perimeter pC2 of the second contour C2 be between 5 and 12% and that r be equal to or greater than 20 mm .
- first contour 01 and second contour 02 each describe a substantially rectangular shape
- said inner surface has four lower rounded corners in the shape of a spherical cap of third radius r, with r between 5 mm and 50 mm,
- said side wall is a truncated pyramid comprising four inclined walls each rising from each of said lower rounded corners,
- the container may be a large container, with a substantially rectangular bottom (hereinafter referred to as “large box”).
- the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 334 mm, a height h of 94 mm, a third radius r of 15 mm, a first radius R of 41 mm and a second radius R' of 5 mm.
- non-ferritic austenitic
- the container may be made of ferritic stainless steel and have a length L2 of 322 mm, a height h of 59 mm, a third radius r of 30 mm, a first radius R of 59 mm and a second radius R' of 5 mm.
- the perimeter pC2 of the second contour C2 is 89 cm, and the height h corresponds to 6.63% of the perimeter pC2 of the second contour C2.
- the container may be a container of medium size, with a substantially rectangular bottom (hereinafter referred to by the terms “medium box”).
- the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 157 mm, a height h of 80 mm, a third radius r of 10 mm, a first radius R of 28 mm and a second radius R' of 5 mm.
- non-ferritic austenitic
- the container can be made of ferritic stainless steel and have a length L2 of 180 mm, a height h of 60 mm, a third radius r of 25 mm, a first radius R of 21 mm and a second radius R' of 5 mm.
- the perimeter pC2 of the second contour C2 is 60 cm, and the height h corresponds to 10% of the perimeter pC2 of the second contour C2.
- the container may be a flat container (shallow), with a substantially rectangular bottom (hereinafter referred to by the terms "flat box”)
- the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 270 mm, a height h of 40 mm, a third radius r of 10 mm, a first radius R of 16 mm and a second radius R' of 5 mm.
- the container may be made of ferritic stainless steel and have a length L of 270 mm, a height h of 40 mm, a third radius r of 25 mm, a first radius R of 15 mm and a second radius R' of 5 mm.
- the perimeter pC2 of the second contour C2 is 74 cm
- the height h corresponds to 5.4% of the perimeter pC2 of the second contour C2.
- the first contour C1 and second contour C2 each describe a circle and the junction zone has the shape of a truncated torus (hereinafter referred to as a "round box") ,
- said inner surface has the shape of a truncated torus of third radius r,
- said side wall is a truncated cone of revolution whose height passes through the center O of said first contour C1,
- any plane tangent to said truncated cone of revolution forming an angle a with respect to a flat support on which said bottom is intended to be placed, which is between 80 and 88 degrees of angle;
- any plane tangent to said side wall can be common to the truncated torus of first radius R of said upper zone and to the truncated torus of third radius r of said junction zone,
- any plane tangent to the side wall can be common to the truncated torus of second radius R' of the upper zone and to the truncated torus of third radius r of the junction zone.
- the container may be made of ferritic (austenitic) stainless steel and have a diameter D2 of 213 mm, a height h of 65 mm, a third radius r of 47 mm, a first radius R of 30 mm and a second radius R' of 5 mm.
- the container may be made of non-ferritic (austenitic) stainless steel and have a diameter D2 of 155 mm, a height h of 51 mm, a third radius r of 22 mm, a first radius R of 30 mm and a second radius R' of 5 mm.
- the perimeter pC2 of the second contour C2 is 74 cm, and the height h corresponds to 7.97% of the perimeter pC2 of the second contour C2.
- the edge 223 terminating the upper zone 222 can be a rolled edge, that is to say an edge coming to close by forming an angle of 90 degrees with respect to the wall of the container.
- the rolling will not reveal the slice of the edge of the side wall so as not to create a risk when passing through a microwave oven (risk of creating an electric arc).
- the width of the edge is greater, and for example equal to 20 mm.
- the cookware according to the invention may also include a cover, preferably made of plastic material, which can be placed in a microwave oven.
- Figure 1 is a schematic top view of a first embodiment of the cookware according to the invention in which the first contour C1 and second contour C2 each describe a substantially rectangular shape;
- Figure 2 comprises two schematic views 2A and 2B in side perspective of another example of a cookware according to the invention
- Figure 3 comprises two schematic sectional views 3A and 3B of a first variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the large box type); these schematic views corresponding to two distinct examples differing in the drawability of each of the embodiments;
- Figure 4 comprises two schematic sectional views 4A and 4B of a second variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the "medium box” type); these schematic views corresponding to two distinct examples differing essentially by the drawability of each of the embodiments;
- Figure 5 comprises two schematic sectional views 5A and 5B of a third variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the "flat box" type); these schematic views corresponding to two distinct examples differing in the drawability of each of the embodiments;
- FIG. 6 comprises two schematic cross-sectional views 6A and 6B of a second embodiment of the cookware according to the invention (of the “round box” type), these two schematic views corresponding to two different examples of this embodiment, as well as a third schematic view 6C in perspective showing the first and second zones and the evolution of the value of the radii of curvature from R to R′ in the upper zone of the container.
- FIG. 6 comprises two schematic cross-sectional views 6A and 6B of a second embodiment of the cookware according to the invention (of the “round box” type), these two schematic views corresponding to two different examples of this embodiment, as well as a third schematic view 6C in perspective showing the first and second zones and the evolution of the value of the radii of curvature from R to R′ in the upper zone of the container.
- the cookware 1 comprises a container 2 of pressed stainless steel, with an inner surface 200 (visible in FIGS. 1 and 2) suitable for receiving food and an outer surface 201 (visible in views 2A and 2B).
- the container 2 comprises a bottom 21 of a shape suitable for resting on a work surface (in this case a flat bottom) and the first contour C1 of which has a substantially rectangular shape, as well as a continuous side wall 22 (visible on Figure 2).
- Figure 3 shows in particular that the side wall 22 comprises: a junction area 220 (visible in Figure 3) rising from the bottom 21 and having a curved shape oriented so that the inner surface 200 is concave at the level of the junction area 220: indeed, Figure 2 shows that the inner surface 200 comprises four lower rounded corners 2201, 2202, 2203, 2204 having the shape of a spherical cap of third radius r, an intermediate zone 221 (visible in FIG. 3) rising from the zone junction 220: FIG.
- the side wall 22 is a truncated pyramid comprising four inclined walls 221 1 , 2212, 2213, 2214 which each rise from each of the lower rounded corners 2201 , 2202, 2203 , 2204 and forming an angle a with respect to a flat support on which the bottom 21 is intended to be placed, which is between 80° and 88 degrees of angle; an upper zone 222 (visible in FIG. 3) extending the intermediate zone 221 ending in an edge 223 (visible in particular in views 3B and 4A) describing a second rectangular symmetrical contour C2, the upper zone 222 having a curved shape oriented from so that the outer surface 201 is concave at the level of said upper zone 222: FIGS.
- the outer surface 201 comprises two first adjacent upper rounded corners 2221, 2222 having the shape of a spherical cap of first radius R and defining a first upper side 2231, and two second upper rounded corners 2223, 2224 having the shape of a spherical cap of second radius R' and being opposite the first upper rounded corners 2221, 2222 of first radius R, defining a second upper side 2232 (visible in Figure 2) opposite said first upper side 2231, with R representing between two and ten times the value of R' so that the container 2 has a greater edge width on the side of the corners rounded corners of radius R (2221, 2222) than on the side of the rounded corners of radius R' (2223, 2224).
- the first upper side 2231 of the edge is formed into a lip which has the effect of facilitating gripping of the container 2.
- This lip also has the effect of conforming this portion of the upper edge into a neck which facilitates the pouring of contents of the container such as dishes, and for example dishes in sauce.
- the width, considered overall in top view, of the lip is preferably of the order of 20 mm.
- FIG. 3 more particularly illustrates a first variant of the first embodiment of the cookware according to the invention represented in FIGS.
- FIG. 5 more particularly illustrates a third variant of the first embodiment of the cooking utensil according to the invention shown in FIGS.
- FIG 6 is shown the second embodiment of the culinary item 1 according to the invention in which the first contour C1 and second contour C2 of the container 2 each describe a circle so that the container 2 has a sphere shape truncated (hereinafter referred to as "round box".
- the container 2 comprises a bottom 21 of a shape adapted to rest on a work surface (in this case a flat bottom) and whose first contour C1 is circular, as well as a continuous side wall 22 which, as for the first embodiment (as shown in Figures 1 to 5) comprises three zones:
- the inner surface 200 has in section the shape of a truncated sphere of third radius r,
- the side wall 22 is a truncated cone of revolution 215 whose generatrix passes through the center O of said first contour C1 and any plane tangent to the truncated cone of revolution 215 forming an angle a with respect to a flat support on which said bottom 21 is intended to be placed which is between 80 and 88 degrees of angle;
- any plane tangent to said side wall 22 is common to the truncated sphere of first radius R of said upper zone 222 and to the truncated sphere of third radius r of said junction zone 220 and
- any plane tangent to the side wall 22 is common to the truncated sphere of second radius R′ of said upper zone 222 and to the truncated sphere of third radius r of said junction zone 220.
- Views 3B, 4B, 5B and 6B show the presence of a bead located at a height corresponding to 2/3 of the height h from the bottom. This bead, which stiffens the side wall, results from the stamping of the containers.
- the modeling focused on three containers or boxes that could, in terms of geometry, fit into a microwave oven: a medium box, a round box, and a flat box. Initially, the containers were modeled unloaded, that is to say, containing no food inside.
- results of this simulation show in particular that the fluid and rounded shape of the corners of each container allows a fluid circulation of the waves. They also show that the very wide lip (forming a flared neck) (on the side of the first upper rounded corners 2221 and 2222) allows easier evacuation of electric charges. It enlarges the opening without necessarily modifying the size and volume of the container.
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Abstract
Description
DESCRIPTION DESCRIPTION
Titre de l’invention : ARTICLE CULINAIRE POUR FOUR A MICRO-ONDESTitle of the invention: COOKWARE FOR MICROWAVE OVEN
Domaine technique de l’invention Technical field of the invention
La présente invention concerne le domaine des récipients utilisables dans des fours à micro-ondes, et se rapporte plus particulièrement à un article culinaire comprenant un récipient en acier inoxydable destiné à être utilisé pour chauffer des aliments dans un four à micro-ondes. The present invention relates to the field of containers that can be used in microwave ovens, and relates more particularly to a cookware comprising a stainless steel container intended to be used to heat food in a microwave oven.
Arrière-plan technique Technical background
Les fours à micro-ondes génèrent des ondes électromagnétiques qui viennent agiter les molécules d’eau à l’intérieur des aliments, ce qui provoque une montée en température rapide et locale. Ce processus ne permet pas l’utilisation de tous types de récipients. En effet, certains plastiques, le polystyrène ou la terre cuite ne peuvent pas ou ne sont pas appropriés pour réchauffer des aliments dans des fours à microondes. Microwave ovens generate electromagnetic waves that agitate the water molecules inside the food, causing a rapid and local rise in temperature. This process does not allow the use of all types of containers. Indeed, some plastics, polystyrene or terracotta cannot or are not suitable for heating food in microwave ovens.
Habituellement, les récipients utilisés dans les fours à micro-ondes sont en verre ou en plastique. De manière usuelle, il est généralement admis que les récipients ou les accessoires en métal (notamment en acier inoxydable) présentant un ou plusieurs angles pointus ne peuvent pas être utilisés dans des fours à micro-ondes. De tels articles sont connus de l’homme du métier, comme par exemple ceux décrits dans les demandes de brevet US2017202393 ou EP313725. Ainsi, dans la demande de brevet américain, il prend en considération les impératifs de forme d’un récipient métallique pour micro-ondes. Ces impératifs se traduisent par des conditions très précises sur la forme finale du récipient (notamment des formes arrondies). Mais rien n’est dit concernant une forme spécifique de la paroi latérale du récipient permettant une bonne circulation des ondes et de la chaleur à l’intérieur de la boîte. Usually, the containers used in microwave ovens are made of glass or plastic. Usually, it is generally accepted that containers or accessories made of metal (in particular stainless steel) having one or more sharp angles cannot be used in microwave ovens. Such articles are known to those skilled in the art, such as for example those described in patent applications US2017202393 or EP313725. Thus, in the US patent application, he takes into consideration the shape requirements of a metal container for microwaves. These imperatives result in very precise conditions on the final shape of the container (in particular rounded shapes). But nothing is said about a specific shape of the side wall of the container allowing a good circulation of waves and heat inside the box.
Exposé de l’invention Disclosure of Invention
Pour répondre au cahier des charges susmentionné, le déposant a mis au point un article culinaire destiné à être utilisé dans un four à micro-ondes comportant un récipient en matériau métallique (qui peut être de préférence intégralement moulé), avec une surface intérieure adaptée à recevoir des aliments et une surface extérieure, le récipient comprenant : - un fond de forme adaptée à prendre appui au moins partiellement sur une surface de travail et dont le contour est symétrique et décrit un cercle, ou une forme sensiblement rectangulaire, et To meet the aforementioned specifications, the applicant has developed a culinary item intended to be used in a microwave oven comprising a container made of metallic material (which can preferably be integrally molded), with an interior surface adapted to receiving food and an outer surface, the container comprising: - a bottom of a shape adapted to bear at least partially on a work surface and whose outline is symmetrical and describes a circle, or a substantially rectangular shape, and
- une paroi latérale continue comportant : - a continuous side wall comprising:
- une zone de jonction, ou raccordement, s’élevant à partir dudit fond et présentant une forme courbe orientée de manière que ladite surface intérieure soit concave au niveau de ladite zone de jonction, - a junction area, or connection, rising from said bottom and having a curved shape oriented so that said inner surface is concave at said junction area,
- une zone intermédiaire s’élevant à partir de ladite zone de jonction, et - an intermediate zone rising from said junction zone, and
- une zone supérieure prolongeant ladite zone intermédiaire se terminant par un bord décrivant un deuxième contour C2 symétrique de forme similaire à celle dudit premier contour C1 , l’article culinaire selon l’invention étant caractérisé en ce que le récipient est en acier inoxydable, et en ce que : - an upper zone extending said intermediate zone ending in an edge describing a second symmetrical outline C2 of similar shape to that of said first outline C1, the cooking utensil according to the invention being characterized in that the container is made of stainless steel, and in that :
- la zone supérieure présente une forme sensiblement courbe orientée de manière que la surface extérieure soit concave au niveau de la zone supérieure, et dans la zone supérieure, - the upper zone has a substantially curved shape oriented so that the outer surface is concave at the level of the upper zone, and in the upper zone,
- la surface extérieure présente une première zone présentant un premier rayon de courbure R et une deuxième zone présentant un deuxième rayon de courbure R’, la première zone représentant au moins 10% du deuxième contour C2 et la progression de R’ à R entre ladite deuxième zone et ladite première zone étant homogène et régulière la première zone représentant au moins 10% du deuxième contour C2, et de préférence entre 10% et 20% du deuxième contour C2 lorsque la forme est circulaire et de préférence entre 25% et 30% lorsque la forme est rectangulaire, et la progression de R’ à R entre la deuxième zone et la première zone étant homogène et régulière, et - the outer surface has a first zone having a first radius of curvature R and a second zone having a second radius of curvature R', the first zone representing at least 10% of the second contour C2 and the progression from R' to R between said second zone and said first zone being homogeneous and regular, the first zone representing at least 10% of the second contour C2, and preferably between 10% and 20% of the second contour C2 when the shape is circular and preferably between 25% and 30% when the shape is rectangular, and the progression from R' to R between the second zone and the first zone being homogeneous and regular, and
- le rapport de R/R’ est compris entre 1 ,5 et 15, et de préférence entre 1 ,875 et 12,5. Le récipient de l’article culinaire selon l’invention présente donc une forme globale ayant des lignes fluides parfaitement continues. En outre, le récipient selon l’invention, de nature métallique et présentant des formes arrondies et continues peut être utilisé à la fois dans un four à micro-ondes et dans un congélateur. - the R/R' ratio is between 1.5 and 15, and preferably between 1.875 and 12.5. The container of the cookware according to the invention therefore has an overall shape having perfectly continuous flowing lines. In addition, the container according to the invention, of metallic nature and having rounded and continuous shapes, can be used both in a microwave oven and in a freezer.
Par ailleurs, un rapport R/R,’ du premier rayon de courbure R sur le deuxième rayon de courbure R’, compris entre 1 ,5 et 15, et de préférence entre 1 ,875 et 12,5 a pour effet que la paroi latérale présente un col élargi dans la zone supérieure, ce qui permet une bonne circulation des ondes et de la chaleur à l’intérieur du récipient. Lorsque le premier contour C1 décrit un cercle, dans la zone de jonction, la surface intérieure peut présenter en section la forme d’un tore tronqué de troisième rayon r ou bien, lorsque le contour premier C1 décrit une forme sensiblement rectangulaire, la surface intérieure peut comporter quatre coins arrondis inférieurs ayant chacun la forme d’une calotte sphérique de troisième rayon r, avec r compris entre 10 mm et 50 mm. Furthermore, a ratio R/R,' of the first radius of curvature R to the second radius of curvature R', of between 1.5 and 15, and preferably between 1.875 and 12.5 has the effect that the wall side has an enlarged neck in the upper area, which allows good circulation of waves and heat inside the container. When the first contour C1 describes a circle, in the junction zone, the inner surface may have in section the shape of a truncated torus of third radius r or else, when the first contour C1 describes a substantially rectangular shape, the inner surface may comprise four lower rounded corners each having the shape of a spherical cap of third radius r, with r between 10 mm and 50 mm.
Le fait que la zone de jonction ait la forme d’un tore tronqué (Contour circulaire) ou présente quatre coins ayant la forme d’une calotte sphérique (Contour rectangulaire) permet d’éviter la présence d’une rupture brusque du profil entre la paroi latérale et le fond du récipient. The fact that the junction zone has the shape of a truncated torus (Circular outline) or has four corners in the shape of a spherical cap (Rectangular outline) makes it possible to avoid the presence of a sudden break in the profile between the side wall and the bottom of the container.
Dans la zone intermédiaire, In the middle zone,
- la paroi latérale peut être un cône de révolution tronqué dont la hauteur passe par le centre O du premier contour C1 lorsque celui-ci décrit un cercle, ou - the side wall can be a truncated cone of revolution whose height passes through the center O of the first contour C1 when the latter describes a circle, or
- la paroi latérale peut être une pyramide tronquée comportant quatre parois inclinées s’élevant chacune à partir de chacun des coins arrondis inférieurs lorsque le premier contour C1 décrit une forme sensiblement rectangulaire, - the side wall may be a truncated pyramid comprising four inclined walls each rising from each of the lower rounded corners when the first contour C1 describes a substantially rectangular shape,
- tout plan tangent au cône de révolution tronqué ou chacune des parois inclinées formant un angle a par rapport à un support plan sur lequel ledit fond est destiné à être posé qui est compris entre 80 et 88 degrés d’angle. Au niveau de la zone intermédiaire, l’angle a compris entre 80 et 88 degrés d’angle a pour effet de permettre l’évacuation de charges électriques à l’extérieur du récipient ; une telle gamme de variation de la valeur de l’angle a permet également d’optimiser l’empilement des boites de même format les unes dans les autres et ainsi optimiser les coûts l’encombrement (logistique, rangement chez l’utilisateur, etc.). - any plane tangent to the truncated cone of revolution or each of the inclined walls forming an angle a with respect to a flat support on which said bottom is intended to be placed, which is between 80 and 88 degrees of angle. At the level of the intermediate zone, the angle a of between 80 and 88 degrees of angle has the effect of allowing the evacuation of electrical charges outside the container; such a range of variation of the value of the angle a also makes it possible to optimize the stacking of boxes of the same format one inside the other and thus to optimize the costs and the size (logistics, storage at the user's, etc. ).
Au niveau de la zone supérieure, ledit deuxième contour C2 peut décrire une forme sensiblement rectangulaire ou circulaire. At the level of the upper zone, said second contour C2 can describe a substantially rectangular or circular shape.
Dans le cas d’une forme sensiblement rectangulaire, la surface extérieure peut comporter deux premiers coins arrondis supérieurs adjacents ayant la forme d’une calotte sphérique de premier rayon R et définissant un premier côté supérieur et deux seconds coins arrondis supérieurs ayant la forme d’une calotte sphérique de deuxième rayon R’ et étant opposés auxdits premiers coins arrondis supérieurs en définissant un deuxième côté supérieur opposé audit premier côté supérieur. In the case of a substantially rectangular shape, the outer surface may comprise two adjacent first upper rounded corners having the shape of a spherical cap of first radius R and defining a first upper side and two second upper rounded corners having the shape of a spherical cap of second radius R' and being opposite said first upper rounded corners by defining a second upper side opposite said first upper side.
Dans la zone supérieure le deuxième contour C2 peut présenter une longueur L2 ou un diamètre D2 (selon que le deuxième contour C2 est sensiblement rectangulaire ou est circulaire), qui sont tels que L2 ou D2 sont au moins égaux à 1 ,3 x h, et de préférence au moins égaux à 3 x h. Cela a également pour effet d’éviter toutes accumulations de charges électriques à l’intérieur du récipient. In the upper zone, the second contour C2 may have a length L2 or a diameter D2 (depending on whether the second contour C2 is substantially rectangular or is circular), which are such that L2 or D2 are at least equal to 1.3 xh, and preferably at least equal to 3×h. This also has the effect of preventing any accumulation of electrical charges inside the container.
La paroi latérale peut présenter une hauteur h à partir du fond comprise entre 30 et 150 mm The side wall can have a height h from the bottom of between 30 and 150 mm
A titre d’aciers inoxydables dans le cadre de la présente invention pour réaliser le récipient de l’article culinaire selon l’invention, nous pouvons utiliser des aciers inoxydables ferritiques ou non ferritiques (notamment austénitiques), selon que l’on souhaite réaliser un récipient présentant un emboutissage profond ou faible. As stainless steels in the context of the present invention to make the container of the culinary item according to the invention, we can use ferritic or non-ferritic (in particular austenitic) stainless steels, depending on whether it is desired to make a container with deep or shallow drawing.
Ainsi par exemple, à titre d’aciers inoxydables non ferritiques (dits austénitiques), on utilisera de préférence dans le cadre de la présente invention, l’acier inoxydable INOX 304 selon la norme américaine AISI (comprenant 18% de Cr et 8% nickel, et correspondant à la référence AFNOR Z7CN18-09), permettant un emboutissage profond. Thus, for example, as non-ferritic (so-called austenitic) stainless steels, use will preferably be made in the context of the present invention of stainless steel INOX 304 according to the American standard AISI (comprising 18% Cr and 8% nickel , and corresponding to AFNOR reference Z7CN18-09), allowing deep drawing.
Par contre, à titre d’aciers inoxydables ferritiques, on utilisera de préférence dans le cadre de la présente invention l’acier inoxydable INOX 430 selon la norme américaine AISI (comportant 18% de Cr, et correspondant à la référence AFNOR Z8C17). Un tel acier présente l’avantage d’être moins cher par contre il présente une faible aptitude à s’étirer, ce qui est un problème lorsque l’on souhaite réaliser des récipients de hauteur élevée, notamment aptes à s’emboiter. On the other hand, as ferritic stainless steels, stainless steel INOX 430 according to the American standard AISI (comprising 18% Cr, and corresponding to the AFNOR reference Z8C17) will preferably be used in the context of the present invention. Such steel has the advantage of being less expensive on the other hand it has a low ability to stretch, which is a problem when it is desired to produce containers of high height, in particular capable of fitting together.
Pour permettre un emboutissage d’un récipient en acier inoxydable ferritique, il est préférable que le rapport de la hauteur h sur la valeur du périmètre pC2 du deuxième contour C2 soit comprise entre 5 et 12% et que r soit égale ou supérieur à 20 mm.To allow stamping of a ferritic stainless steel container, it is preferable that the ratio of the height h to the value of the perimeter pC2 of the second contour C2 be between 5 and 12% and that r be equal to or greater than 20 mm .
Selon un premier mode de réalisation de l’article culinaire selon l’invention dans lequel les premier contour 01 et deuxième contour 02 décrivent chacun une forme sensiblement rectangulaire, According to a first embodiment of the cookware according to the invention in which the first contour 01 and second contour 02 each describe a substantially rectangular shape,
- dans ladite zone de jonction, ladite surface intérieure comporte quatre coins arrondis inférieurs ayant la forme d’une calotte sphérique de troisième rayon r, avec r compris entre 5 mm et 50 mm, - in said junction area, said inner surface has four lower rounded corners in the shape of a spherical cap of third radius r, with r between 5 mm and 50 mm,
- dans ladite zone intermédiaire, - in said intermediate zone,
- ladite paroi latérale est une pyramide tronquée comportant quatre parois inclinées s’élevant chacune à partir de chacun desdits coins arrondis inférieurs, - said side wall is a truncated pyramid comprising four inclined walls each rising from each of said lower rounded corners,
- chacune desdites parois inclinées formant un angle a par rapport à un support plan sur lequel ledit fond est destiné à être posé qui est compris entre 80 et 88 degrés d’angle. Selon une première variante de ce premier mode de réalisation, le récipient pourra être un grand récipient, à fond sensiblement rectangulaire (ci-après désigné par les termes « grande boite »). - each of said inclined walls forming an angle a with respect to a flat support on which said bottom is intended to be placed, which is between 80 and 88 degrees of angle. According to a first variant of this first embodiment, the container may be a large container, with a substantially rectangular bottom (hereinafter referred to as “large box”).
Selon un premier exemple d’une telle variante, le récipient peut être en acier inoxydable non ferritique (austénitique) et présenter une longueur L2 de 334 mm, une hauteur h de 94 mm, un troisième rayon r de 15 mm, un premier rayon R de 41 mm et un deuxième rayon R’ de 5 mm. According to a first example of such a variant, the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 334 mm, a height h of 94 mm, a third radius r of 15 mm, a first radius R of 41 mm and a second radius R' of 5 mm.
Selon un deuxième exemple d’une telle variante, le récipient peut être en acier inoxydable ferritique et présenter une longueur L2 de 322 mm, une hauteur h de 59 mm, un troisième rayon r de 30 mm, un premier rayon R de 59 mm et un deuxième rayon R’ de 5 mm. Pour une telle variante, le périmètre pC2 du deuxième contour C2 est de 89 cm, et la hauteur h correspond à à 6,63% du périmètre pC2 du deuxième contour C2. According to a second example of such a variant, the container may be made of ferritic stainless steel and have a length L2 of 322 mm, a height h of 59 mm, a third radius r of 30 mm, a first radius R of 59 mm and a second radius R' of 5 mm. For such a variant, the perimeter pC2 of the second contour C2 is 89 cm, and the height h corresponds to 6.63% of the perimeter pC2 of the second contour C2.
Selon une deuxième variante de ce premier mode de réalisation, le récipient pourra être un récipient de taille moyenne, à fond sensiblement rectangulaire (ci-après désigné par les termes « boite moyenne »). According to a second variant of this first embodiment, the container may be a container of medium size, with a substantially rectangular bottom (hereinafter referred to by the terms “medium box”).
Selon un premier exemple d’une telle variante, le récipient peut être en acier inoxydable non ferritique (austénitique) et présenter une longueur L2 de 157 mm, une hauteur h de 80 mm, un troisième rayon r de 10 mm, un premier rayon R de 28 mm et un deuxième rayon R’ de 5 mm. According to a first example of such a variant, the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 157 mm, a height h of 80 mm, a third radius r of 10 mm, a first radius R of 28 mm and a second radius R' of 5 mm.
Selon un deuxième exemple d’une telle variante, le récipient peut être en acier inoxydable ferritique et présenter une longueur L2 de 180 mm, une hauteur h de 60 mm, un troisième rayon r de 25 mm, un premier rayon R de 21 mm et un deuxième rayon R’ de 5 mm. Pour une telle variante, le périmètre pC2 du deuxième contour C2 est de 60 cm, et la hauteur h correspond à 10% du périmètre pC2 du deuxième contour C2. According to a second example of such a variant, the container can be made of ferritic stainless steel and have a length L2 of 180 mm, a height h of 60 mm, a third radius r of 25 mm, a first radius R of 21 mm and a second radius R' of 5 mm. For such a variant, the perimeter pC2 of the second contour C2 is 60 cm, and the height h corresponds to 10% of the perimeter pC2 of the second contour C2.
Selon une troisième variante de ce premier mode de réalisation, le récipient pourra être un récipient plat (de faible profondeur), à fond sensiblement rectangulaire (ci- après désigné par les termes « boite plate ») According to a third variant of this first embodiment, the container may be a flat container (shallow), with a substantially rectangular bottom (hereinafter referred to by the terms "flat box")
Selon un premier exemple d’une telle variante, le récipient peut être en acier inoxydable non ferritique (austénitique) et présenter une longueur L2 de 270 mm, une hauteur h de 40 mm, un troisième rayon r de 10 mm, un premier rayon R de 16 mm et un deuxième rayon R’ de 5 mm. Selon un deuxième exemple d’une telle variante, le récipient peut être en acier inoxydable ferritique et présenter une longueur L de 270 mm, une hauteur h de 40 mm, un troisième rayon r de 25 mm, un premier rayon R de 15 mm et un deuxième rayon R’ de 5 mm. Pour une telle variante, le périmètre pC2 du deuxième contour C2 est de 74cm, et la hauteur h correspond à 5,4% du périmètre pC2 du deuxième contourC2. According to a first example of such a variant, the container may be made of non-ferritic (austenitic) stainless steel and have a length L2 of 270 mm, a height h of 40 mm, a third radius r of 10 mm, a first radius R of 16 mm and a second radius R' of 5 mm. According to a second example of such a variant, the container may be made of ferritic stainless steel and have a length L of 270 mm, a height h of 40 mm, a third radius r of 25 mm, a first radius R of 15 mm and a second radius R' of 5 mm. For such a variant, the perimeter pC2 of the second contour C2 is 74 cm, and the height h corresponds to 5.4% of the perimeter pC2 of the second contour C2.
Selon un deuxième mode de réalisation de l’article culinaire selon l’invention, les premier contour C1 et deuxième contour C2 décrivent chacun un cercle et la zone de jonction présente une forme de tore tronqué (ci-après désignée par « boite ronde »),According to a second embodiment of the cookware according to the invention, the first contour C1 and second contour C2 each describe a circle and the junction zone has the shape of a truncated torus (hereinafter referred to as a "round box") ,
- dans ladite zone de jonction, ladite surface intérieure présente la forme d’un tore tronqué de troisième rayon r, - in said junction zone, said inner surface has the shape of a truncated torus of third radius r,
- dans ladite zone intermédiaire, - in said intermediate zone,
- ladite paroi latérale est un cône de révolution tronqué dont la hauteur passe par le centre O dudit premier contour C1 , - said side wall is a truncated cone of revolution whose height passes through the center O of said first contour C1,
- tout plan tangent audit cône de révolution tronqué formant un angle a par rapport à un support plan sur lequel ledit fond est destiné à être posé qui est compris entre 80 et 88 degrés d’angle ; - any plane tangent to said truncated cone of revolution forming an angle a with respect to a flat support on which said bottom is intended to be placed, which is between 80 and 88 degrees of angle;
- dans ladite zone supérieure, - in said upper zone,
- au niveau de ladite première zone, tout plan tangent à ladite paroi latérale peut être commun au tore tronqué de premier rayon R de ladite zone supérieure et au tore tronqué de troisième rayon r de ladite zone de jonction, - at the level of said first zone, any plane tangent to said side wall can be common to the truncated torus of first radius R of said upper zone and to the truncated torus of third radius r of said junction zone,
- au niveau de ladite deuxième zone diamétralement opposée à la première zone, tout plan tangent à la paroi latérale peut être commun au tore tronqué de deuxième rayon R’ de la zone supérieure et au tore tronqué de troisième rayon r de la zone de jonction. - at the level of said second zone diametrically opposite to the first zone, any plane tangent to the side wall can be common to the truncated torus of second radius R' of the upper zone and to the truncated torus of third radius r of the junction zone.
Selon une première variante de ce deuxième mode de réalisation, le récipient peut être en acier inoxydable ferritique (austénitique) et présenter un diamètre D2 de 213 mm, une hauteur h de 65 mm, un troisième rayon r de 47 mm, un premier rayon R de 30 mm et un deuxième rayon R’ de 5 mm. According to a first variant of this second embodiment, the container may be made of ferritic (austenitic) stainless steel and have a diameter D2 of 213 mm, a height h of 65 mm, a third radius r of 47 mm, a first radius R of 30 mm and a second radius R' of 5 mm.
Selon une deuxième variante de ce deuxième mode de réalisation, le récipient peut être en acier inoxydable non ferritique (austénitique) et présenter un diamètre D2 de 155 mm, une hauteur h de 51 mm, un troisième rayon r de 22 mm, un premier rayon R de 30 mm et un deuxième rayon R’ de 5 mm. Pour une telle variante, le périmètre pC2 du deuxième contour C2 est de 74cm, et la hauteur h correspond à 7,97% du périmètre pC2 du deuxième contour C2. According to a second variant of this second embodiment, the container may be made of non-ferritic (austenitic) stainless steel and have a diameter D2 of 155 mm, a height h of 51 mm, a third radius r of 22 mm, a first radius R of 30 mm and a second radius R' of 5 mm. For such a variant, the perimeter pC2 of the second contour C2 is 74 cm, and the height h corresponds to 7.97% of the perimeter pC2 of the second contour C2.
Le bord 223 terminant la zone supérieure 222 peut être un bord roulé, c’est-à-dire un bord venant se refermer en formant un angle de 90 degrés d’angle par rapport à la paroi du récipient. De manière préférée, le roulage ne laissera pas apparaître la tranche du bord de la paroi latérale pour ne pas créer de risque lors du passage dans un four à micro-ondes (risque de création d’arc électrique). Entre lesdits deux premiers coins arrondis supérieurs adjacents, la largeur du bord est plus importante, et par exemple égale à 20 mm. The edge 223 terminating the upper zone 222 can be a rolled edge, that is to say an edge coming to close by forming an angle of 90 degrees with respect to the wall of the container. Preferably, the rolling will not reveal the slice of the edge of the side wall so as not to create a risk when passing through a microwave oven (risk of creating an electric arc). Between said first two adjacent upper rounded corners, the width of the edge is greater, and for example equal to 20 mm.
L’article culinaire selon l’invention peut en outre comporter un couvercle, de préférence en matière plastique pouvant être placé dans un four à micro-ondes.The cookware according to the invention may also include a cover, preferably made of plastic material, which can be placed in a microwave oven.
Brève description des figures Brief description of figures
D’autres avantages et particularités de la présente invention résulteront de la description qui va suivre, donnée à titre d’exemple non limitatif et faite en référence aux figures annexées et aux exemples conformes à la présente invention : Other advantages and particularities of the present invention will result from the description which will follow, given by way of non-limiting example and made with reference to the appended figures and to the examples in accordance with the present invention:
[Fig. 1] : la figure 1 est une vue de dessus schématique d’un premier mode de réalisation de l’article culinaire selon l’invention dans lequel les premier contour C1 et deuxième contour C2 décrivent chacun une forme sensiblement rectangulaire ;[Fig. 1]: Figure 1 is a schematic top view of a first embodiment of the cookware according to the invention in which the first contour C1 and second contour C2 each describe a substantially rectangular shape;
[Fig. 2] : la figure 2 comporte deux vues schématiques 2A et 2B en perspective latérale d’un autre exemple d’article culinaire selon l’invention ; [Fig. 2]: Figure 2 comprises two schematic views 2A and 2B in side perspective of another example of a cookware according to the invention;
[Fig. 3] : la figure 3 comprend deux vues schématiques 3A et 3B en coupe d’une première variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type grande boite ») ; ces vues schématiques correspondant à deux exemples distincts se différenciant par l’emboutissabilité de chacun des modes de réalisation ; [Fig. 3]: Figure 3 comprises two schematic sectional views 3A and 3B of a first variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the large box type); these schematic views corresponding to two distinct examples differing in the drawability of each of the embodiments;
[Fig. 4] : la figure 4 comprend deux vues schématiques 4A et 4B en coupe d’une deuxième variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type « boite moyenne ») ; ces vues schématiques correspondant à deux exemples distincts se différenciant essentiellement par l’emboutissabilité de chacun des modes de réalisation ; [Fig. 4]: Figure 4 comprises two schematic sectional views 4A and 4B of a second variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the "medium box" type); these schematic views corresponding to two distinct examples differing essentially by the drawability of each of the embodiments;
[Fig. 5] : la figure 5 comprend deux vues schématiques 5A et 5B en coupe d’une troisième variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type « boite plate ») ; ces vues schématiques correspondant à deux exemples distincts se différenciant par l’emboutissabilité de chacun des modes de réalisation ; [Fig. 5]: Figure 5 comprises two schematic sectional views 5A and 5B of a third variant of the first embodiment of the cookware according to the invention shown in Figures 1 and 2 (of the "flat box" type); these schematic views corresponding to two distinct examples differing in the drawability of each of the embodiments;
[Fig. 6] : la figure 6 comprend deux vues schématiques 6A et 6B en coupe d’un deuxième mode de réalisation de l’article culinaire selon l’invention (de type « boite ronde »), ces deux vues schématiques correspondant à deux exemples différents de ce mode de réalisation, ainsi qu’une troisième vue schématique 6C en perspective montrant les première et deuxième zones et l’évolution de la valeur des rayons de courbure de R à R’ dans la zone supérieure du récipient. Description détaillée des figures 1 à 6 [Fig. 6]: FIG. 6 comprises two schematic cross-sectional views 6A and 6B of a second embodiment of the cookware according to the invention (of the “round box” type), these two schematic views corresponding to two different examples of this embodiment, as well as a third schematic view 6C in perspective showing the first and second zones and the evolution of the value of the radii of curvature from R to R′ in the upper zone of the container. Detailed description of figures 1 to 6
Dans la description qui va suivre, des éléments identiques, similaires ou analogues seront désignés par les mêmes chiffres de référence. In the following description, identical, similar or analogous elements will be designated by the same reference numerals.
Sur les figures 1 et 2, est représenté le premier mode de réalisation de l’article culinaire 1 selon l’invention dans lequel les premier contour C1 et deuxième contour C2 décrivent chacun une forme sensiblement rectangulaire. L’article culinaire 1 comprend un récipient 2 en acier inoxydable embouti, avec une surface intérieure 200 (visible sur les figures 1 et 2) adaptée à recevoir des aliments et une surface extérieure 201 (visible sur les vues 2A et 2B). Le récipient 2 comprend un fond 21 de forme adaptée à prendre appui sur une surface de travail (en l’occurrence un fond plat) et dont le premier contour C1 présente une forme sensiblement rectangulaire, ainsi qu’une paroi latérale 22 continue (visible sur la figure 2). In Figures 1 and 2, is shown the first embodiment of the culinary item 1 according to the invention in which the first contour C1 and second contour C2 each describe a substantially rectangular shape. The cookware 1 comprises a container 2 of pressed stainless steel, with an inner surface 200 (visible in FIGS. 1 and 2) suitable for receiving food and an outer surface 201 (visible in views 2A and 2B). The container 2 comprises a bottom 21 of a shape suitable for resting on a work surface (in this case a flat bottom) and the first contour C1 of which has a substantially rectangular shape, as well as a continuous side wall 22 (visible on Figure 2).
La structure de la paroi latérale 22 du récipient 2 est particulièrement visible sur la figure 3, mais cela s’applique également aux schémas des figures 1 ,2, 4 et 5. Ainsi, la figure 3 montre notamment que la paroi latérale 22 comporte : une zone de jonction 220 (visible sur la figure 3) s’élevant à partir du fond 21 et présentant une forme courbe orientée de manière que la surface intérieure 200 soit concave au niveau de la zone de jonction 220 : en effet, la figure 2 montre que la surface intérieure 200 comporte quatre coins arrondis inférieurs 2201 , 2202, 2203, 2204 ayant la forme d’une calotte sphérique de troisième rayon r, une zone intermédiaire 221 (visible sur la figure 3) s’élevant à partir de la zone de jonction 220 : la figure 2 montre notamment que, dans cette zone intermédiaire, la paroi latérale 22 est une pyramide tronquée comportant quatre parois inclinées 221 1 , 2212, 2213, 2214 qui s’élèvent chacune à partir de chacun des coins arrondis inférieurs 2201 , 2202, 2203, 2204 et formant un angle a par rapport à un support plan sur lequel le fond 21 est destiné à être posé qui est compris entre 80° et 88 degrés d’angle ; une zcne supérieure 222 (visible sur la figure 3) prolongeant la zone intermédiaire 221 se terminant par un bord 223 (visible notamment sur les vues 3B et 4A) décrivant un deuxième contour C2 symétrique rectangulaire, la zone supérieure 222 présentant une forme courbe orientée de manière que la surface extérieure 201 soit concave au niveau de ladite zone supérieure 222 : les figures 2 à 5 montrent en particulier que la surface extérieure 201 comporte deux premiers coins arrondis supérieurs 2221 , 2222 adjacents ayant la forme d’une calotte sphérique de premier rayon R et définissant un premier coté supérieur 2231 , et deux seconds coins arrondis supérieurs 2223, 2224 supérieurs ayant la forme d’une calotte sphérique de deuxième rayon R’ et étant opposés aux premiers coins arrondis supérieurs 2221 , 2222 de premier rayon R en définissant un deuxième coté supérieur 2232 (visible sur la figure 2) opposé audit premier coté supérieur 2231 , avec R représentant entre deux et dix fois la valeur de R’ de sorte que le récipient 2 dispose d’une largeur de bord plus importante du côté des coins arrondis de rayon R (2221 , 2222) que du côté des coins arrondis de rayon R’ (2223, 2224). The structure of the side wall 22 of the container 2 is particularly visible in Figure 3, but this also applies to the diagrams of Figures 1, 2, 4 and 5. Thus, Figure 3 shows in particular that the side wall 22 comprises: a junction area 220 (visible in Figure 3) rising from the bottom 21 and having a curved shape oriented so that the inner surface 200 is concave at the level of the junction area 220: indeed, Figure 2 shows that the inner surface 200 comprises four lower rounded corners 2201, 2202, 2203, 2204 having the shape of a spherical cap of third radius r, an intermediate zone 221 (visible in FIG. 3) rising from the zone junction 220: FIG. 2 shows in particular that, in this intermediate zone, the side wall 22 is a truncated pyramid comprising four inclined walls 221 1 , 2212, 2213, 2214 which each rise from each of the lower rounded corners 2201 , 2202, 2203 , 2204 and forming an angle a with respect to a flat support on which the bottom 21 is intended to be placed, which is between 80° and 88 degrees of angle; an upper zone 222 (visible in FIG. 3) extending the intermediate zone 221 ending in an edge 223 (visible in particular in views 3B and 4A) describing a second rectangular symmetrical contour C2, the upper zone 222 having a curved shape oriented from so that the outer surface 201 is concave at the level of said upper zone 222: FIGS. 2 to 5 show in particular that the outer surface 201 comprises two first adjacent upper rounded corners 2221, 2222 having the shape of a spherical cap of first radius R and defining a first upper side 2231, and two second upper rounded corners 2223, 2224 having the shape of a spherical cap of second radius R' and being opposite the first upper rounded corners 2221, 2222 of first radius R, defining a second upper side 2232 (visible in Figure 2) opposite said first upper side 2231, with R representing between two and ten times the value of R' so that the container 2 has a greater edge width on the side of the corners rounded corners of radius R (2221, 2222) than on the side of the rounded corners of radius R' (2223, 2224).
Ainsi, dans cette zone qui s’étend entre les coins arrondis 2221 et 2222 de premier rayon R, le premier coté supérieur 2231 du bord est conformé en une lèvre qui a pour effet de faciliter la préhension du récipient 2. Cette lèvre a aussi pour effet de conformer cette portion du bord supérieur en un col qui facilite le versement de contenus du récipient tels que des plats, et par exemple des plats en sauce. La largeur, considérée globalement en vue de dessus, de la lèvre est de préférence de l’ordre de 20 mm. Thus, in this zone which extends between the rounded corners 2221 and 2222 of first radius R, the first upper side 2231 of the edge is formed into a lip which has the effect of facilitating gripping of the container 2. This lip also has the effect of conforming this portion of the upper edge into a neck which facilitates the pouring of contents of the container such as dishes, and for example dishes in sauce. The width, considered overall in top view, of the lip is preferably of the order of 20 mm.
La vue 2B montre que la surface extérieure 201 présente une première zone 2225 ayant la forme d’une sphère tronquée de premier rayon R et une deuxième zone 2226) ayant la forme d’une sphère tronquée de deuxième rayon R’, avec la première zone 2225 représentant 25% du deuxième contour C2 et la progression de R’ à R entre la deuxième zone 2226 et ladite première zone 222 étant homogène et régulière La figure 3 illustre plus particulièrement une première variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type grande boite ») : selon le premier exemple illustré sur la vue 3A, L = 334 mm, h = 94 mm, r = 15 mm, R = 41 mm et R’ = 5 mm ; et selon le deuxième exemple illustré sur la vue 3B, L = 322 mm, h = 59 mm, r = 30 mm, R = 17 mm et R’ = 5 mm. View 2B shows that the outer surface 201 has a first zone 2225 having the shape of a truncated sphere of first radius R and a second zone 2226) having the shape of a truncated sphere of second radius R′, with the first zone 2225 representing 25% of the second contour C2 and the progression from R′ to R between the second zone 2226 and said first zone 222 being homogeneous and regular FIG. 3 more particularly illustrates a first variant of the first embodiment of the cookware according to the invention represented in FIGS. 1 and 2 (of the large box type): according to the first example illustrated in view 3A, L=334 mm, h=94 mm, r=15 mm, R=41 mm and R' = 5mm; and according to the second example illustrated in view 3B, L = 322 mm, h = 59 mm, r = 30 mm, R = 17 mm and R' = 5 mm.
La figure 4 illustre plus particulièrement une deuxième variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type « boite moyenne ») : selon le premier exemple illustré sur la vue 4A, L = 157 mm, h = 80 mm, r = 10 mm, R = 28 mm et R’ = 5 mm ; et selon le deuxième exemple illustré sur la vue 4B, L = 180 mm, h = 60 mm, r = 25 mm, R = 21 mm et R’ = 5 mm. La figure 5 illustre plus particulièrement une troisième variante du premier mode de réalisation de l’article culinaire selon l’invention représenté sur les figures 1 et 2 (de type « boite plate ») : selon le premier exemple illustré sur la vue 5A, L = 270 mm, h = 40 mm, r = 10 mm, R = 16 mm et R’ = 5 mm ; et selon le deuxième exemple illustré sur la vue 5B, L = 270 mm, h = 40 mm, r = 25 mm, R = 15 mm et R = 5 mm. Pour un tel récipient faiblement embouti, on pourra utiliser un acier inoxydable non ferritique. Les variantes illustrées sur les vues 3B, 4B et 5 B sont réalisées en acier inoxydable ferritique. Sur la figure 6, est représenté le deuxième mode de réalisation de l’article culinaire 1 selon l’invention dans lequel les premier contour C1 et deuxième contour C2 du récipient 2 décrivent chacun un cercle de sorte que le récipient 2 a une forme de sphère tronquée (ci-après désignée par « boite ronde ». Le récipient 2 comprend un fond 21 de forme adaptée à prendre appui sur une surface de travail (en l’occurrence un fond plat) et dont le premier contour C1 est circulaire, ainsi qu’une paroi latérale 22 continue qui, de même que pour le premier mode de réalisation (tel que représenté sur les figures 1 à 5) comporte trois zones : FIG. 4 more particularly illustrates a second variant of the first embodiment of the cooking utensil according to the invention represented in FIGS. 1 and 2 (of the “medium box” type): according to the first example illustrated in view 4A, L = 157 mm, h = 80 mm, r = 10 mm, R = 28 mm and R' = 5 mm; and according to the second example illustrated in view 4B, L=180 mm, h=60 mm, r=25 mm, R=21 mm and R'=5 mm. FIG. 5 more particularly illustrates a third variant of the first embodiment of the cooking utensil according to the invention shown in FIGS. 1 and 2 (of the “flat box” type): according to the first example illustrated in view 5A, L = 270 mm, h = 40 mm, r = 10 mm, R = 16 mm and R' = 5 mm; and according to the second example illustrated in view 5B, L=270 mm, h=40 mm, r=25 mm, R=15 mm and R=5 mm. For such a slightly stamped container, a non-ferritic stainless steel can be used. The variants illustrated in views 3B, 4B and 5B are made of ferritic stainless steel. In Figure 6, is shown the second embodiment of the culinary item 1 according to the invention in which the first contour C1 and second contour C2 of the container 2 each describe a circle so that the container 2 has a sphere shape truncated (hereinafter referred to as "round box". The container 2 comprises a bottom 21 of a shape adapted to rest on a work surface (in this case a flat bottom) and whose first contour C1 is circular, as well as a continuous side wall 22 which, as for the first embodiment (as shown in Figures 1 to 5) comprises three zones:
- 6 dans la zone de jonction 220, la surface intérieure 200 présente en section la forme d’une sphère tronquée de troisième rayon r, - 6 in the junction area 220, the inner surface 200 has in section the shape of a truncated sphere of third radius r,
- dans la zone intermédiaire 221 , la paroi latérale 22 est un cône de révolution tronqué 215 dont la génératrice passe par le centre O dudit premier contour C1 et tout plan tangent au cône de révolution tronqué 215 formant un angle a par rapport à un support plan sur lequel ledit fond 21 est destiné à être posé qui est compris entre 80 et 88 degrés d’angle ; - in the intermediate zone 221, the side wall 22 is a truncated cone of revolution 215 whose generatrix passes through the center O of said first contour C1 and any plane tangent to the truncated cone of revolution 215 forming an angle a with respect to a flat support on which said bottom 21 is intended to be placed which is between 80 and 88 degrees of angle;
- dans ladite zone supérieure 222, - in said upper zone 222,
- au niveau de ladite première zone 2225, tout plan tangent à ladite paroi latérale 22 est commun à la sphère tronquée de premier rayon R de ladite zone supérieure 222 et à la sphère tronquée de troisième rayon r de ladite zone de jonction 220 et- at the level of said first zone 2225, any plane tangent to said side wall 22 is common to the truncated sphere of first radius R of said upper zone 222 and to the truncated sphere of third radius r of said junction zone 220 and
- au niveau de ladite deuxième zone 2226, tout plan tangent à la paroi latérale 22 est commun à la sphère tronquée de deuxième rayon R’ de ladite zone supérieure 222 et à la sphère tronquée de rayon troisième r de ladite zone de jonction 220. - at the level of said second zone 2226, any plane tangent to the side wall 22 is common to the truncated sphere of second radius R′ of said upper zone 222 and to the truncated sphere of third radius r of said junction zone 220.
Les vues 3B, 4B, 5B et 6B montrent la présence d’un bourrelet situé à une hauteur correspondant au 2/3 de la hauteur h à partir du fond. Ce bourrelet, qui rigidifie la paroi latérale, est consécutif à l’emboutissage des récipients. Views 3B, 4B, 5B and 6B show the presence of a bead located at a height corresponding to 2/3 of the height h from the bottom. This bead, which stiffens the side wall, results from the stamping of the containers.
Une simulation numérique des cartographies de champ électrique dans des récipients selon l’invention lors du passage dans un four à micro-ondes a été réalisée. A digital simulation of electric field maps in containers according to the invention during passage through a microwave oven was carried out.
Pour cela, on a utilisé des outils de simulation numérique, et le logiciel de modélisation en éléments finis « Ansys Electronic Desktop version 18.2 » de la société Ansys couplé à deux serveurs de calcul. For this, we used digital simulation tools, and the finite element modeling software "Ansys Electronic Desktop version 18.2" from the company Ansys coupled to two calculation servers.
Pour introduire des données réalistes dans le modèle, on a pris en compte les données disponibles dans la littérature pour alimenter le modèle. To introduce realistic data into the model, we took into account the data available in the literature to feed the model.
La modélisation a porté sur trois récipients ou boites qui pouvaient, en termes de géométrie, entrer dans un four micro-ondes : une boite moyenne, une boite ronde, et une boite plate. Dans un premier temps, les récipients ont été modélisés non chargés, c'est-à-dire, ne contenant aucun aliment à l'intérieur. The modeling focused on three containers or boxes that could, in terms of geometry, fit into a microwave oven: a medium box, a round box, and a flat box. Initially, the containers were modeled unloaded, that is to say, containing no food inside.
On a ensuite rempli ces récipients aux trois-quarts avec de l'eau et ensuite avec un liquide dont les propriétés diélectriques sont proches d'une valeur médiane des produits susceptibles d'être habituellement contenus dans de telles récipients. These containers were then three-quarters filled with water and then with a liquid whose dielectric properties are close to a median value of the products likely to be usually contained in such containers.
Les résultats de cette simulation montrent notamment que la forme fluide et arrondie des coins de chaque récipient permet une circulation fluide des ondes. Ils montrent aussi que la lèvre (formant un col évasé) très large (du côté des premiers coins arrondis supérieurs 2221 et 2222) permet une évacuation plus facile des charges électriques. Elle agrandit l’ouverture sans nécessairement modifier la taille et le volume du récipient. The results of this simulation show in particular that the fluid and rounded shape of the corners of each container allows a fluid circulation of the waves. They also show that the very wide lip (forming a flared neck) (on the side of the first upper rounded corners 2221 and 2222) allows easier evacuation of electric charges. It enlarges the opening without necessarily modifying the size and volume of the container.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2108933A FR3126294B1 (en) | 2021-08-26 | 2021-08-26 | Culinary item for microwave oven |
| FRFR2108933 | 2021-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023025993A1 true WO2023025993A1 (en) | 2023-03-02 |
Family
ID=77999165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2021/051958 Ceased WO2023025993A1 (en) | 2021-08-26 | 2021-11-05 | Culinary item for a microwave oven |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE1029717B1 (en) |
| ES (1) | ES2936184B2 (en) |
| FR (1) | FR3126294B1 (en) |
| WO (1) | WO2023025993A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701585A (en) * | 1986-04-04 | 1987-10-20 | Kidde Consumer Durables Corp. | Microwave browning cookware |
| EP0313725A2 (en) | 1987-10-30 | 1989-05-03 | Corning Glass Works | Microwaveable/stovetop cooking utensil |
| US5203836A (en) * | 1992-01-10 | 1993-04-20 | Rubbermaid Incorporated | Nestable mixing bowl with integral handle |
| US20170202393A1 (en) | 2014-07-15 | 2017-07-20 | Envases Universales De México, S.A. P.I. De C.V. | Metal container for microwave oven |
| KR20200004268A (en) * | 2018-07-03 | 2020-01-13 | (주)씨엔티코리아 | An electric stove container for safe use |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560850A (en) * | 1984-12-03 | 1985-12-24 | Aluminum Company Of America | Container with steam port for use in microwave ovens |
| WO1993023971A1 (en) * | 1992-05-21 | 1993-11-25 | Campbell Soup Company | Metal container and use thereof in a microwave oven |
-
2021
- 2021-08-26 FR FR2108933A patent/FR3126294B1/en active Active
- 2021-11-05 WO PCT/FR2021/051958 patent/WO2023025993A1/en not_active Ceased
-
2022
- 2022-05-18 BE BE20225376A patent/BE1029717B1/en active IP Right Grant
- 2022-05-31 ES ES202230468A patent/ES2936184B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701585A (en) * | 1986-04-04 | 1987-10-20 | Kidde Consumer Durables Corp. | Microwave browning cookware |
| EP0313725A2 (en) | 1987-10-30 | 1989-05-03 | Corning Glass Works | Microwaveable/stovetop cooking utensil |
| US5203836A (en) * | 1992-01-10 | 1993-04-20 | Rubbermaid Incorporated | Nestable mixing bowl with integral handle |
| US20170202393A1 (en) | 2014-07-15 | 2017-07-20 | Envases Universales De México, S.A. P.I. De C.V. | Metal container for microwave oven |
| KR20200004268A (en) * | 2018-07-03 | 2020-01-13 | (주)씨엔티코리아 | An electric stove container for safe use |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3126294A1 (en) | 2023-03-03 |
| ES2936184R1 (en) | 2023-04-12 |
| ES2936184B2 (en) | 2025-01-29 |
| BE1029717B1 (en) | 2023-03-28 |
| BE1029717A1 (en) | 2023-03-21 |
| FR3126294B1 (en) | 2024-04-05 |
| ES2936184A2 (en) | 2023-03-14 |
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