Classifications

• • 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
  • A47J27/00—Cooking-vessels
  • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
• • 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
  • A47J27/00—Cooking-vessels
• • 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

Definitions

• the present invention relates to a culinary article whose bottom has, on the lower outer face, at least one insert metal insert at least partially covering the bottom.
• the article, including its bottom, is typically made of a soft metal such as aluminum.
• metal covers metal and metal alloy.
• a culinary article comprising: a metal cap defining locally a bottom bottom portion for the article, wherein said cap has, in a section perpendicular to this bottom, a crenellated zone,
• this insert which has an apparent lower face, being made of metal harder than that of the cap. metal and having, in section, at least one perforated or crenellated zone fixed by embedding with the crenellated zone of said metal cap.
• “Crenellations” are folds or stampings of the plate defining a plurality of studs creating, under the bottom, discontinuities support when placed on a support.
• the attachment insert / bottom "soft" is similar to a stapling or crimping (in the manner of a stone that enchased), essentially,
• the orifices may be imperfectly filled
• An object of the invention is to overcome all or part of these disadvantages. Another goal is to prevent imperfections, related to the manufacturing process or use, or foreign elements appearing at the soft metal interfaces / reported insert, further induce risks of scratches on fragile surfaces and / or range defects.
• defects of scope may, when the article is laid, cause stability defects and / or the deposition of the soft metal on the support.
• the hard metal insert has the function of allowing the article to be heated by induction, via a suitable generator, the greater the number of orifices through the insert, the greater the effectiveness of the invention. Induction heating may be impaired.
• the invention proposes, according to one characteristic, that around said perforated or crenellated zone of the bottom insert is a lower zone defining a peripheral bearing. , continuously solid, crown-shaped, in said harder metal.
• this range zone covers the bottom portion of the cap, around said recesses, and has a lower face, all or part of which is at least slightly lower than the lower limit of said perforated or crenellated zone and / or the crenellated zone of said metal cap. In this way, the support of the culinary article on a stand will focus there.
• said "zone of peripheral reach” has a width (hereinafter L) greater than the shortest distance (d ⁇ ) separating two successive crenellations, along a line joining the center of the bottom and a peripheral edge of this one.
• FIG. 1 shows a diagram of a culinary article, in a section perpendicular to the bottom, according to a first embodiment according to the invention
• FIGS. 5a, 5b, 5c and 6a, 6b, 6c show stages of implementation of two manufacturing methods that can be used in the context of the invention;
• FIG. 7 shows a view from below of FIG. 2;
• the term "culinary article” any kitchen article comprising, typically, at least one handle and a cap (hollow) receiving the product or the preparation to be heated or cooked.
• the bottom of the cap is a sensitive part, since the most subject to the heat of a suitable source. The stoves, pans .... are concerned.
• 1.1 ', 1' ' comprises a hard metal portion, la, la', la "and a softer metal portion Ib, Ib ', Ib". These two parts are assembled under the article to constitute a powerful reinforced bottom.
• Part la, la ', la may be stainless steel, part Ib, Ib', Ib" aluminum.
• Part Ib, Ib ', Ib is preferably monobloc, as illustrated, and has a bottom cross wall 21, 21', 21 '' from which rises a side wall 3, 3 ', 3". It has a hollow crown shape. At least a portion of the bottom wall is lined from below by the hard metal portion, la, la ', la "which is a perforated bottom insert.
• the insert la has a central zone 23 surrounded by a bearing area 25 through which the culinary article 1 can bear on a support.
• the bearing area 25 is continuously solid (i.e., without orifice) and crown-shaped.
• the central zone 23 is traversed right through by holes 230 filled tightly by the soft metal of the bottom wall 21, for assembly. These orifices are evenly distributed or not, in one or more zones, typically following several rays that can be concentric and start near the center of the plate la (see on this point figs.2 and 3).
• the insert 1a which has a lower surface 11a apparent, has Figure 1, in section, at least one perforated area 231 fixed by embedding with a crenellated zone 210 of the metal cap Ib.
• a crenellated zone 210 of the metal cap Ib Around all or part of the area 210 is a continuously solid area 211 covered, or doubled, from below by the peripheral area of reach 25.
• the support of the article 1 on its support is concentrated towards the bearing area 25, it has a lower face of which all or part is at least slightly below (d) with respect to the limit (1) the lowest of the zones 231 and 210.
• the illustrations of the article bases figs.1,2,3 are on a large scale and are in fact not with a lower face (such as lia fig.l) planar, but curved or recessed to ensure a position below the bearing area 25, as shown in Fig.8 where the curvature is exaggerated.
• the guard height (d) would appreciate compared to the only lower limit of the perforated area 231.
• Fig.8, 25a has been identified the line joining the center of the bottom and the peripheral edge 27 thereof. Following this straight line (that is to say in a section perpendicular to the bottom and containing the straight line), the peripheral bearing zone 25 has a width (L) greater than the shortest distance (d1) separating two successive teeth 210a, 210b of the zone 210. Preferably, this width (L) will be greater than or equal to that (L ') between the inner and outer limits 12 and 11 respectively of a group of two respectively outer (21Oc') and inner (21Oa) ') of the metal cap separated by at least one third slot (21Ob'); is typically of the order of 7mm, see fig.2.
• the perforated area 231, and here the entire bottom plate from the center to its bearing area 25 extends along a curved lower surface 100a, concave downwards (and confused here with
• the bottom insert is favorably also embedded in the metal cap, in an area 29, 29 ', 29' '. situated away from the bearing area 25 and said more central recesses, such as 210,231 fig.l and 210 ", 231" fig.3.
• This complementary embedding zone such as 29 is favorably located beyond the periphery the bearing area such as 25 and the surface such as 211 of the cap that it covers.
• the zone 29 receives the attachment to the cap Ib of a fixing portion 31 which extends the periphery of the bearing area 25, in one piece with
• This flange 31 externally surrounds the zone 25, to which it is connected by a fold 33 of stiffening, and has orifices 310 filled tightly by the metal of the cap Ib, thus achieving the aforementioned complementary recesses of the zone 29.
• the fold 33 is inclined at an angle, towards the outside.
• Figures 2 and 3 there is therefore also a fastening portion 31 ', 31 "in one piece with the peripheral bearing area 25', 25" and the bottom insert insert la ', the ", which may have the same previous characteristics as that -idem for the cap Ib ', Ib “bottom 21', 21” vis-à-vis Ib and 21-, except that the fixing portion 31 ', 31 "defines, for the piece la ', the "a peripheral edge raised 35', 35" where there is a retention recess of this piece in (under) the bottom of the metal cap Ib ', Ib ", in an area thus set back of said bearing area 25 ', 25 ". 2, the retaining recess 29 'comprises orifices 310' passing through the fixing portion 31 'and filled closely by the metal of the cap.
• the orifices 310 ' are located in the curvature, here the radius.
• the raised peripheral portion 35,35 ' is embedded only on the edge of the cap and is fully visible.
• this portion has at its base a curvature which connects the edge 35 'and the zone 25' and is traversed by the orifices 310 '.
• said raised portion 35 defines the perforated outer peripheral rim 31.
• Fig.3 the curved peripheral edge, folded 35 "ends in the cap Ib" where it is thus embedded, recessed.
• zone 25, 25 ', 25 can be at least globally flat
• this zone of full span is a continuous crown; the crown could be in several portions, a continuously solid zone can surround the crenellated zone 210, 210 ', 210 "of the cap Ib, Ib', Ib",
• the fixing portion 31, 31 ', 31 " is in one piece with the insert, the same for the bearing area, otherwise the fixing portion can be used to set the bearing area, the central portion of the insert being recessed elsewhere, as for example in the previous embodiments, however, this complicates the manufacture,
• the perforated or crenellated zone of the bottom plate and / or the crenellated zone of the metal cap under which this plate is applied extends (ent) along a lower curved concave bottom surface; concerning this characteristic, one could provide a shoulder, such as a fold down.
• 4, 241d shows a crenellated recess zone of the insert 10a cooperating with the crenellated zone 21Od of the cap 10b under which this insert is plated, with its bearing area 25d below. This is less efficient in terms of fixation, but beneficial for induction.
• Two manufacturing processes are more particularly proposed to obtain the illustrated cookware, or at least one background for such items. Indeed, it is explained below that the bottom can be obtained alone, on the one hand, the rest of the article can be achieved elsewhere, especially after the bottom.
• a raw, unpreformed block 37 is made of light metal, or light alloy, and on the other hand, of the desired insert.
• This insert is already perforated (and / or crenellated) where it should be as described before.
• Fig. 3 Typically (see Fig. 5a), we have the origin of a hollow insert (called capsule) made of metal or metal alloy harder than that of the block. 37 and having in the central part the through holes 230 ". These orifices are arranged in successive rays with, around, the solid zone 25 "with its width (L) greater than the shortest distance (dl) separating two successive mean radii of orifices from this central part. so bordered on its perimeter by the peripheral edge raised 35 ".
• capsule hollow insert
• dl shortest distance
• This hollow plate and the block are then pressed against each other under pressure (see FIG. 5b) until: - (re) pushing under pressure (via a press) the metal or the softer alloy of the block by compelling it to fill the hollow 41 and said holes 230 "of the plate whose raised peripheral edge is embedded in the material of the block by embedding its end, as we also see fig.3, and,
• the peripheral edge 35 may be deformed inwards and / or outwards during the pressure application of the capsule and the block, and will position itself skew with respect to the central part of the insert (fig.5b) .This may strengthen the attachment.
• the insert is already perforated (or crenellated) where it needs to be, as described before. At this moment, it is still in the state of plane plate, or already slightly curved as fig. ⁇ a, with then the aforementioned concavity, to ensure the position below (d) sought (a shape shouldered at the periphery for the same purpose a priori could also be considered, as already indicated).
• the orifices 230 in the central portion may be arranged in successive rays with, therefore, around the solid zone 25 and its width (L) greater than (dl).
• This zone 25 is here itself, on its perimeter, surrounded by the orifices 310 which can be distributed regularly, all following the same radius. But the zone 25 could be surrounded only irregularly by the orifices 310.
• the outer peripheral edge raised 35 ' will be folded just once to be recessed at the edge of the block, the peripheral holes 310' located in the rounded connection having favored a high-performance fixation, without hindering the support.
• Figures 5a, 5b and 6a, 6b also illustrate that the pressure applied between each insert and the block 37 has of course caused a deformation of this block which finally takes the form of the bottom, here 21 or 21 ''. As shown, it is furthermore anticipated that beyond this stage, the deformation under pressure of the block will be favorably continued until developing the side wall (3 fig.5c or 3 '' fig. ⁇ c), then one-piece with the background.
• the bearing area so that its underside is below the rest of the bottom, it may intervene from the manufacture of the 1 'insert (or plate), for example with a form immediately bent, or later, when pressurizing between the insert and the soft metal block, or when developing the side wall of the article, or in the context of a subsequent recovery, via a pressure exerted on this background.
• Different techniques are known.
• Figure 7 the bottom view, which refers to the half sectional view of Figure 2 (section II-II), shows a concentric organization of perforations or holes central 210 ', with the non-perforated peripheral bearing surface 25' of width L and the outermost additional attachment holes 310 '.
• the 'hardest' inserted insert is peripherally interrupted at 35 'and the softer bottom Ib appears at the location of the peripheral crown, between 35' and 27, and at the location of the filled perforations (210 ', 310'). ').

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• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Manufacturing & Machinery (AREA)
• Cookers (AREA)
• Frying-Pans Or Fryers (AREA)
• Food-Manufacturing Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Cites Families (21)

• 2007
  • 2007-04-27 FR FR0703110A patent/FR2915359B1/fr not_active Expired - Fee Related
• 2008
  • 2008-04-23 AU AU2008257251A patent/AU2008257251A1/en not_active Abandoned
  • 2008-04-23 WO PCT/FR2008/050737 patent/WO2008145927A1/fr active Application Filing
  • 2008-04-23 JP JP2010504802A patent/JP2010524617A/ja active Pending
  • 2008-04-23 KR KR1020097024732A patent/KR20100017416A/ko not_active Application Discontinuation
  • 2008-04-23 EP EP08805691A patent/EP2142053A1/de not_active Withdrawn
  • 2008-04-23 RU RU2009143922/12A patent/RU2458616C2/ru not_active IP Right Cessation
  • 2008-04-23 CN CN200880013788A patent/CN101668459A/zh active Pending

Non-Patent Citations (1)

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