阅读说明：本技术 烹饪容器 (Cooking container ) 是由 萨西·拜兹 于 2019-07-09 设计创作，主要内容包括：本发明涉及一种烹饪容器,其由轻金属或合金的薄板制成,烹饪容器包括侧壁和底部,底部用于水平设置在加热设备、尤其是感应加热设备上,底部收纳由铁磁金属或合金制成的板,铁磁金属或合金具有与薄板的金属或合金不同的机械特性、热特性、物理特性,并且尤其是具有比薄板的金属或合金的弹性极限高的弹性极限,板包括呈冠状的连续实心的周边承载区域,周边承载区域在宽度L上径向延伸并且终止于朝薄板延伸的加高的周边边缘。根据本发明,底部通过弯曲部分连接到侧壁,弯曲部分直接从周边边缘向上延伸,并且板具有半径R1,比率L/R1大于0.08,优选大于0.1。(The invention relates to a cooking vessel made of a thin plate of a light metal or alloy, comprising side walls and a bottom for horizontal arrangement on a heating device, in particular an induction heating device, the bottom housing a plate made of a ferromagnetic metal or alloy having different mechanical, thermal, physical properties than the metal or alloy of the thin plate and in particular having a higher elastic limit than the elastic limit of the metal or alloy of the thin plate, the plate comprising a crown-shaped continuous solid peripheral bearing area extending radially over a width L and terminating in a raised peripheral edge extending towards the thin plate. According to the invention, the bottom is connected to the side wall by a curved portion, which extends directly upwards from the peripheral edge, and the plate has a radius R1, the ratio L/R1 being greater than 0.08, preferably greater than 0.1.)

1. Cooking vessel (1) made of a thin plate (3) of light metal or alloy, said cooking vessel (1) comprising side walls (9) and a bottom (4), said bottom (4) being intended to be horizontally arranged on a heating device, said bottom (4) receiving a plate (2) made of ferromagnetic metal or alloy having a higher elastic limit than that of the metal or alloy of the thin plate (3), said plate (2) comprising hooking perforations (5) and being embedded in said bottom (4) so that said hooking perforations (5) are filled with the material of the thin plate (3), said plate (2) comprising a continuous solid peripheral bearing area (11) in the shape of a crown, said peripheral bearing area (11) extending radially over a width L and ending in a raised peripheral edge (20) extending towards the thin plate (3), characterized in that the bottom (4) is connected to the side wall (9) by a curved portion (30), the curved portion (30) extending directly upwards from the peripheral edge (20), and in that the plate (2) has a radius R1, the ratio L/R1 being greater than 0.08.

2. Cooking container (1) according to claim 1, characterized in that said ratio L/R1 is further greater than 0.1.

3. Cooking container (1) according to claim 1, characterized in that said peripheral edge (20) is continuous and regular over the entire periphery of said plate (2).

4. Cooking container (1) according to claim 3, characterised in that said peripheral edge (20) forms an angle a with a line perpendicular to said plate (2), said angle a being smaller than 45 °, so that the free end of said peripheral edge (20) forms a tip (23) embedded in said thin plate (3).

5. Cooking container (1) according to claim 4, characterized in that said angle a is further smaller than 30 °.

6. Cooking container (1) according to claim 4, characterized in that said free end of said peripheral edge (20) comprises an outer edge (21), said curved portion (30) comprising an outer surface (31), said outer surface (31) extending directly from said outer edge (21).

7. Cooking vessel (1) according to any of claims 1 to 6, characterized in that the peripheral edge (20) extends upwards from the upper surface (14) of the plate (2) over a height H greater than 0.2 mm.

8. Cooking container (1) according to claim 7, characterized in that said height H is further greater than 0.5 mm.

9. Cooking container (1) according to any one of claims 1 to 8, characterized in that said plate (2) comprises a lower surface (13), said lower surface (13) being delimited by said peripheral edge (20) and having an area S1; and the bottom (4) comprising a flat upper surface (32) for receiving food, the upper surface (32) having an area S2, the ratio S1/S2 being greater than 0.95.

10. Cooking container (1) according to claim 9, characterized in that said ratio S1/S2 is further greater than 0.98.

11. Cooking vessel (1) according to any of the claims 1 to 10, characterized in that the cooking vessel (1) is a long-handled pan, a double-eared pot or a pressure cooker.

12. Cooking container (1) according to claim 1, characterized in that the heating device further comprises an induction heating device.

Technical Field

The invention relates to a cooking vessel, in particular a long-handle pan (po e), a handled pan (casserole), a double-handle pan (sauteuse) or a pressure cooker (autocuiseur), for horizontal arrangement on a heating device, in particular an induction heating device for cooking food.

Background

From document FR2915359 a cooking vessel made of a thin plate of a light metal or alloy is known, comprising a side wall and a bottom for horizontal arrangement on a heating device, in particular an induction heating device. The bottom receives a plate made of a ferromagnetic metal or alloy having different mechanical, thermal, physical properties and in particular having a higher elastic limit than that of the metal or alloy of the thin plate. The plate comprises hooking perforations and is embedded in the bottom portion, so that the hooking perforations are filled with the material of the thin plate. The plate includes a crowned continuous solid peripheral bearing region terminating in a raised peripheral edge extending toward the sheet.

The peripheral edge includes an end portion that is embedded into the bottom portion. Thus, the bottom portion continues to extend radially from the peripheral edge before being connected to the sidewall by the curved portion. The generally horizontal crowned extension is not covered by the ferromagnetic plate and therefore does not "actively" participate in heating when the base is resting on the induction heating apparatus.

Furthermore, the crowned extension should be the subject of a finishing operation by re-machining or brushing.

Disclosure of Invention

The object of the present invention is to overcome the above drawbacks and to provide a cooking vessel compatible with an induction heating device with optimized heating performance.

Another object of the present invention is to provide a cooking vessel of simple design and economical to implement.

These objects are achieved with a cooking vessel made of a thin plate of light metal or alloy, comprising side walls and a bottom for horizontal arrangement on a heating device, in particular an induction heating device, said bottom housing a plate made of ferromagnetic metal or alloy having different mechanical, thermal, physical properties than the metal or alloy of the thin plate and in particular having an elastic limit higher than that of the metal or alloy of the thin plate, said plate comprising hooking perforations and being embedded in said bottom such that said hooking perforations are filled with the material of the thin plate, said plate comprising a crown-shaped continuous solid peripheral bearing zone extending radially in width L and ending in a raised peripheral edge extending towards the thin plate, characterized in that, the bottom is connected to the side wall by a curved portion extending directly upward from the peripheral edge, and in that the plate has a radius R1, the ratio L/R1 being greater than 0.08, preferably greater than 0.1.

The plate thus extends over the entire flat surface of the bottom. As a result, the heating power of the induction heating device through the plate is distributed over the whole of the bottom. Therefore, the cooking container has improved heating performance.

The continuous solid perimeter bearing area is a preferential contact area for a cooking vessel on an induction heating apparatus comprising a glass plate. As defined, the peripheral bearing area is wide enough to avoid scratches on the glass plate when friction is generated by handling the cooking vessel on the heating device.

In the case of continuous heating and cooling, the raised peripheral edge ensures that the continuous solid peripheral bearing zone is held in position against the thin sheet of light metal or alloy.

By "peripheral edge" it is understood that the edge extends over the entire periphery of the plate.

By "the bottom is connected to the side wall by a curved portion which extends directly upwardly from the peripheral edge" it is understood that the curved portion comprises an outer surface which extends upwardly from or immediately adjacent to the outer edge of the peripheral edge.

Preferably, the peripheral edge is continuous and regular over the entire periphery of the plate.

The raised perimeter edge thus effectively prevents deformation of the continuous solid perimeter bearing zone to hold it against the sheet of light metal or alloy.

Advantageously, the peripheral edge forms an angle a with a line perpendicular to the plate, said angle a being less than 45 °, preferably less than 30 °, so that the free end of the peripheral edge forms a tip embedded in the thin plate.

Thus, the free end of the peripheral edge forms a tip which is embedded in the thin plate of light metal or alloy to ensure that the continuous solid peripheral bearing area is held in place.

Preferably, the free end of the peripheral edge comprises an outer edge, and the curved portion comprises an outer surface extending directly from said outer edge.

By "outer edge" it is understood that the edge forms a line extending over the entire outer periphery of the plate.

Advantageously, the peripheral edge extends upwards from the upper surface of the plate over a height H greater than 0.2mm, preferably greater than 0.5 mm.

Preferably, the plate comprises a lower surface bounded by a peripheral edge and having an area S1; and the bottom comprises a flat upper surface for receiving the food, said upper surface having an area S2, the ratio S1/S2 being greater than 0.95, preferably greater than 0.98.

Thus, the plate extends relative to a flat upper plane for receiving food almost entirely. As a result, the heating power of the induction heating device through the plate is transferred to almost the whole of the flat surface for resting the food.

Preferably, the cooking vessel is a long-handled pan, a double-eared pot or a pressure cooker.

Drawings

The invention will be better understood by studying the embodiments, given in a non-limiting manner and illustrated in the accompanying drawings, wherein:

fig. 1 shows a perspective view of a cooking container according to an embodiment of the present invention;

fig. 2 shows a cross-sectional view of the cooking vessel shown in fig. 1 along line II;

FIG. 3 shows a detailed view III of the cooking vessel shown in FIG. 2;

fig. 4 shows a detailed view IV of the cooking vessel of fig. 3.

Detailed Description

It should be noted that in this document, the terms "horizontal", "vertical", "lower", "upper", "longitudinal", "transverse", "high", "low" used to describe the cooking vessel relate to the use of the cooking vessel when it rests on a horizontal plane, in particular a heating device.

According to the embodiment shown in fig. 1 and 4, the cooking container 1 is constituted by a long handle pan (po e). The pan comprises a bottom 4 and side walls 9. A grip handle, not shown in the figures, is attached to the side wall 9. The cooking vessel 1 is made of a thin plate 3 of light metal or alloy in the shape of a disc, for example made of aluminium. The plate is stamped in a manner known to those skilled in the art to form the cooking vessel 1. Preferably, the disc is made of aluminium having a thickness of between 2mm and 6 mm.

The bottom 4 houses a plate 2 made of metal or alloy having different characteristics from those of the sheet 3, in particular a limit of elasticity which is significantly higher than that of aluminium. As can be seen in fig. 3 and 4, the plate 2 is embedded in the metal of the sheet 3. The plate 2 is made of ferromagnetic material to make the cooking vessel 1 compatible with induction heating equipment. The plate 2 arranged on the bottom 4 is intended to be arranged on a heating device.

The plate 2 has a disc shape to fit the circular shape of the bottom 4. The plate 2 comprises a central region 10 surrounded by a peripheral bearing region 11, by means of which peripheral bearing region 11 the cooking vessel 1 can be supported on a support, in particular formed by a glass plate of an induction heating device. The bearing region 11 is continuously solid (that is to say without perforations here) and crowned. The continuous solid peripheral bearing zone 11 extends radially over the width L and the plate 2 has a radius R1 (fig. 2). The ratio L/R1 is greater than 0.08, preferably greater than 0.1. Advantageously, the central area 10 is very slightly concave to facilitate the bearing of the bearing area 11 of the cooking container 1 on the support.

The central area 10 of the plate 2 is penetrated from side to side by the perforations 5. These perforations 5 are distributed uniformly or non-uniformly in one or more zones, generally along a plurality of radii that can be concentric and start near the center of the plate 2 (fig. 1). As can be seen in fig. 3, each perforation 5 has an inclined peripheral lip 6 and a lip end 7. The perforated plate 2 thus formed is applied to the metal sheet 3, the peripheral lip 6 of the perforation 5 forming a projection towards the metal sheet. The plate 2 is embedded in the sheet 3 by cold stamping, as described in document FR 2693894. During the stamping, the straightening of the peripheral lip 6 and the lip end 7 is linked to a creep of the material of the sheet metal 3 in the perforation 5, achieving the anchorage of the plate 2 on the sheet metal 3.

According to fig. 3 and 4, the panel 2 comprises a continuous and regular peripheral edge 20, which peripheral edge 20 externally surrounds the carrying area 11. The peripheral edge 20 is made by folding of the panel 2. Advantageously, the folding radius is less than 2mm, so that the peripheral edge 20 stiffens the load-bearing zone 11. The peripheral edge 20 forms an angle a (fig. 4) smaller than 45 ° with a line perpendicular to the plate 2. The side 12 of the panel 2 is therefore inclined with respect to the bottom 4 and defines with the lower surface 13 of the panel an outer edge 21 and with the upper surface 14 of the panel 2 an inner edge 22. The free end of the peripheral edge 20 thus forms a tip 23, which tip 23 is embedded in the metal sheet 3. The peripheral edge 20, in particular the tip 23, extends upwards from the upper surface 14 of the plate 2 over a height H equal to 0.4 mm.

As can be seen in fig. 2 to 4, the bottom 4 is directly connected to the side wall 9 by a curved portion 30, which curved portion 30 extends directly upwards from the peripheral edge 20. The curved portion 30 includes an outer surface 31, the outer surface 31 extending upwardly from or adjacent to the outer edge 21 of the peripheral edge 20.

The lower surface 13 of the panel 2, delimited by the peripheral edge 20, has an area S1. The bottom 4 has a flat upper surface 32 for receiving food, the upper surface 32 having an area S2. The ratio S1/S2 is greater than 0.95, preferably greater than 0.98. For example, for a long-handled pan with a diameter of 28 cm, the plate 2 has a diameter D1 equal to 225mm and the lower surface 13 has a diameter D1 equal to 39760mm²Area S1 (fig. 3). The flat upper surface 32 has a diameter D2 equal to 229mm and an area S2 equal to 41187mm². The ratio S1/S2 equals 0.97.

The invention is of course not limited to the described and illustrated embodiments, which are given by way of example only. Modifications can be made, in particular from the point of view of the construction of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

In another embodiment variant, the plate may have a polygonal shape to fit the polygonal shape of the bottom.