Inductively heatable metal cooking support

Abstract

The invention relates to a metal cooking support (10) compatible with induction heating, having a cooking surface and a heating surface (12), comprising a metal substrate (2) made of aluminum or an aluminum alloy and a mesh-shaped metal insert (3) made of a ferromagnetic material, which is at least partially inserted into the metal substrate (2) on the side of the heating surface (12), the mesh metal insert (3) has an interstrand opening diameter. According to the invention, the mesh metal insert (3) has, in the central portion thereof, a central opening (38) and / or at least one non-central opening (32), the opening cross-section of which is at least equal to two times the interstrand opening diameter, preferably at least equal to three times the interstrand opening diameter, more preferably at least equal to four times the interstrand opening diameter, and the opening cross-section of which is at least equal to three times the interstrand opening diameter, preferably at least equal to four times the interstrand opening diameter. The diameter of the interstrand opening is preferably at least five times the diameter of the interstrand opening. The invention also relates to a cooking appliance and an electric cooking appliance comprising such a metal cooking holder (10).

Description

Technical Field

[0001] This invention relates to the technical field of metal cooking racks compatible with induction heating for cooking or reheating food. Such metal cooking racks can be used with induction heating devices, such as induction plates mounted or integrated into a work surface, or induction cooktops integrated into electric cooking appliances.

[0002] The present invention relates particularly, but not exclusively, to metal cooking supports that form cooking containers.

[0003] The present invention also relates to a cooking utensil comprising a metal cooking support associated with at least one gripping member. If desired, the one or more gripping members may be removable or detachable relative to the metal cooking support.

[0004] The present invention also relates to electric cooking appliances including a metal cooking rack associated with an induction heating device. Background Technology

[0005] It is known to manufacture cooking utensils comprising a metal body made of aluminum, which are compatible with induction heating by using a metal insert made of ferromagnetic metal assembled to the bottom of the metal body.

[0006] Document EP0509860, for example, describes a metal insert in the form of a perforated plate in the embodiment shown in Figure 12. This configuration allows for the manufacture of cooking appliances compatible with induction heating, which heat in a satisfactory manner.

[0007] However, one drawback of this implementation is the need for a press with a relatively high impact tonnage to properly assemble the metal body with the insert. Another drawback is the difficulty in reducing the thickness of the metal body to below 3 mm while maintaining acceptable bottom deformation over time.

[0008] Document EP0509860 also describes a metal insert made of mesh metal in the embodiment shown in Figure 15. However, this document proposes using a molding operation to fasten the metal insert to the surface of a metal substrate to at least partially embed the insert into the surface.

[0009] A disadvantage of this implementation is that it is difficult to pre-roll the metal insert, made of mesh metal, onto the surface of the metal substrate before the impact operation for final assembly. If the pre-rolling is performed on the free edge of the metal insert, or in other words, on its periphery, the resulting attachment points on the periphery will produce appearance defects because the impact operation during final assembly will cause radial slippage of the aluminum in the metal substrate under the pressure of the press. If the pre-rolling is performed on the surface of the metal insert, rather than on its free edge, the applied pressure risks localized damage to the metal insert and / or the metal substrate (especially when the metal substrate is coated), and / or localized hardening of the metal substrate, which also results in appearance defects. Summary of the Invention

[0010] Various aspects of the present invention aim to overcome the disadvantages of the prior art by providing a metal cooking rack compatible with induction heating, which is easy to manufacture and has no appearance defects.

[0011] A first aspect of the invention relates to a metal cooking rack compatible with induction heating, having a cooking surface and a heating surface, comprising a metal substrate made of aluminum or an aluminum alloy, and a mesh metal insert made of a ferromagnetic material, the mesh metal insert being at least partially inserted into the metal substrate on the heating surface side. The mesh metal insert has an inter-strand opening diameter, because the mesh metal insert has a central opening and / or at least one non-central opening in its central portion, the opening cross-section of which is at least twice the inter-strand opening diameter, preferably at least three times the inter-strand opening diameter, more preferably at least four times the inter-strand opening diameter, and preferably at least five times the inter-strand opening diameter. These arrangements allow the mesh metal insert to be pre-rolled onto the metal substrate by locally deforming the mesh metal insert on at least a portion of the central opening and / or the at least one non-central opening. The highly deformable nature of the mesh metal allows for easy pre-rolling. The diameter of the inter-strand openings in the mesh metal insert is smaller than the minimum size of the central opening and / or the at least one non-central opening. The mesh metal insert will necessarily have free strand portions within the central opening and / or the at least one non-central opening, which may deform and embed into the metal substrate during the pre-rolling operation. Thus, the metal substrate will appear within the central opening and / or the at least one non-central opening. However, since the inductor, which is configured for induction heating, has an annular geometry, the implementation of the central opening and / or the at least one non-central opening does not affect the induction heating performance. Then, with the mesh metal insert and metal substrate properly held in place, an impact operation for the final assembly of these two parts can be performed.

[0012] The heating surface may have a recessed area, in which at least a portion of the at least one non-central opening extends. This arrangement allows for the concealment of defects caused by the pre-curling operation.

[0013] The at least one off-center opening can extend entirely into the recessed area. This arrangement allows for easier concealment of defects caused by the pre-curling operation.

[0014] The recessed area can be annular. This arrangement facilitates the implementation of the recessed area.

[0015] The depth of the recessed area can be between 0.1 and 0.5 mm, preferably between 0.2 and 0.4 mm.

[0016] The mesh metal insert may have multiple off-center openings in its central portion, preferably at least three off-center openings, with an opening cross-section at least twice the diameter of the inter-strand opening, preferably at least three times the diameter of the inter-strand opening (OB), more preferably at least four times the diameter of the inter-strand opening, and most preferably at least five times the diameter of the inter-strand opening. These arrangements allow for pre-curling operations because the different off-center openings have different oriented free edges that deform to perform pre-curling, thereby allowing the assembly to have better mechanical strength.

[0017] Non-central openings can be longer in the radial direction than in the transverse direction. These arrangements allow for better mechanical strength in the mesh metal insert, while also facilitating its pre-curling.

[0018] Metal cooking racks may include at least six off-center openings, preferably twelve off-center openings. These arrangements facilitate the implementation of pre-curling.

[0019] Non-central openings can be distributed within the annular area of ​​the mesh metal insert. This arrangement allows the central area of ​​the metal cooking rack to remain free.

[0020] Non-central openings can be regularly distributed around the central area of ​​the mesh metal insert. These arrangements facilitate the implementation of pre-curling.

[0021] The mesh metal insert may have a central opening with a cross-section at least twice the diameter of the inter-thigh opening, preferably at least three times the diameter of the inter-thigh opening, more preferably at least four times the diameter of the inter-thigh opening, and most preferably at least five times the diameter of the inter-thigh opening.

[0022] The thickness of the metal substrate can be less than or equal to 3.4 mm, preferably less than or equal to 3 mm, and more preferably less than or equal to 2.5 mm. Compared to inserts manufactured in the form of perforated plates, inserts made of mesh metal allow for a reduction in the force required to embed the insert into the metal substrate, thereby allowing for a reduction in the thickness of the metal substrate.

[0023] If needed, the metal substrate can be made from recycled alloys. Recycled alloys are actually harder than the corresponding new alloys.

[0024] Mesh metal inserts can be made of ferritic stainless steel, preferably type 430 stainless steel. However, other ferromagnetic materials can also be considered for manufacturing mesh metal inserts, particularly aluminized steel, including non-stainless steel substrates coated with aluminum on both sides.

[0025] Metal cooking racks can have a base that is configured to rest on an induction heating element.

[0026] According to one embodiment, the bottom is flat.

[0027] The side walls can rise around the bottom to form a cooking container.

[0028] The metal substrate may have a non-stick coating that forms the cooking surface. The non-stick coating may be, in particular, a PTFE-based coating, a ceramic-based coating, a sol-gel-based coating, a silicone-based coating, or a silicone-polyester-based coating. The non-stick coating may be single-layered or multi-layered. Other food-contact compatible non-stick coatings are also possible if desired.

[0029] The metal substrate and the mesh metal insert may have a protective coating that forms the heating surface of the heating element. The protective coating may be, in particular, a PTFE-type coating, an enamel-type coating, a paint-type coating, a ceramic-type coating, a sol-gel-type coating, a silicone-based coating, or a silicone-polyester-based coating. The protective coating may be single-layered or multi-layered. Other protective coatings are conceivable if desired.

[0030] A second aspect of the invention relates to a cooking utensil comprising a metal cooking support and a gripping member mounted on the metal cooking support, wherein the metal cooking support conforms to at least one of the foregoing features.

[0031] A third aspect of the invention relates to an electric cooking appliance comprising a metal cooking rack associated with an induction heating oven, wherein the metal cooking rack conforms to at least one of the foregoing features. Attached Figure Description

[0032] Other features and attributes of the invention will become clearer upon reading the following detailed description of embodiments and variations illustrated in the accompanying drawings, which are by no means limiting, in which: Figure 1 A bottom view of an embodiment of the metal cooking rack according to the present invention is shown.

[0033] Figure 2 It shows the use of Figure 1 A partial schematic diagram of the mesh metal insert of the metal cooking rack shown.

[0034] Figure 3 It shows the use of Figure 1 The metal cooking rack shown Figure 2 A schematic diagram of the overall mesh metal insert shown.

[0035] Figure 4 It shows Figure 1 A partial cross-sectional schematic diagram of the metal cooking rack shown.

[0036] Figure 5 It shows including Figure 2 and Figure 3 A partial cross-sectional schematic diagram of a metal cooking rack with a mesh metal insert is shown.

[0037] Figure 6 A front cross-sectional schematic diagram of an embodiment of a cooking utensil including a metal cooking rack according to the present invention is shown.

[0038] Figure 7 A front cross-sectional schematic diagram of an embodiment of an electric cooking appliance including a metal cooking rack according to the present invention is shown. Detailed Implementation

[0039] Figure 1 An embodiment of a metal cooking rack 10 compatible with induction heating is shown. The metal cooking rack 10 has a cooking surface 11 and a heating surface 12. The heating surface 12 has a bottom 13 configured to rest on an induction heating device. Depending on the induction heating device used, the bottom 13 may be flat or not flat, for example, raised.

[0040] Figure 1 As can be seen, the heating surface 12 has a recessed area 33 relative to the main part of the bottom 13. More specifically, in Figure 1 In the illustrated embodiment, the recessed region 33 is annular. The recessed region 33 is surrounded by the outer region 36 of the bottom 13. The recessed region 33 surrounds the inner region 37 of the bottom 13. The depth of the recessed region 33 is advantageously between 0.1 and 0.5 mm, preferably between 0.2 and 0.4 mm. The depth of the recessed region 33 is, for example, 0.3 mm.

[0041] The metal cooking rack 10 includes a metal substrate 2 made of aluminum or an aluminum alloy. The metal substrate 2 may be made of recycled alloys, which are generally harder than the corresponding new alloys.

[0042] The metal cooking rack 10 includes a mesh metal insert 3 made of ferromagnetic material, advantageously ferritic stainless steel. The mesh metal insert 3 can be made of type 430 stainless steel. The mesh metal insert has a mesh network of strands 30 defining inter-strand openings 31.

[0043] like Figure 2 As can be better seen in the image, the mesh metal insert 3 has a strand thickness EB, a strand width LB, and an inter-strand opening diameter OB. The mesh metal insert 3 also has frontal transparency, which corresponds to the ratio of the inter-strand opening area to the total area.

[0044] like Figure 1 and Figure 3As can be seen, the mesh metal insert 3 has a central opening 38. The central opening 38 surrounds the geometric center of the mesh metal insert 3. However, the center of the central opening 38 is not necessarily at the geometric center of the mesh metal insert 3. In the embodiment shown in the figures, the central opening 38 is circular. The diameter of the central opening 38 is approximately 10 mm. Alternatively, other geometries, such as elongated geometries or multi-branched geometries, can be considered for the central opening 38. Preferably, the maximum cross-section of the central opening 38 is less than 30 mm, more preferably less than 25 mm, more preferably less than 20 mm, and more preferably less than 15 mm.

[0045] like Figure 1 and Figure 3 As can be seen, the mesh metal insert 3 has multiple off-center openings 32 in its central portion. These off-center openings 32 are distributed within the annular region 34 of the mesh metal insert 3. The off-center openings 32 are regularly distributed around the central region 35 of the mesh metal insert 3. The off-center openings 32 are longer in the radial direction than in the transverse direction.

[0046] In the embodiment shown in the accompanying drawings, the number of non-central openings is 12. The length of the non-central opening 32 is, for example, approximately 10.5 mm, and the width of the non-central opening 32 is, for example, approximately 6 mm.

[0047] The cross-sectional area of ​​the non-central opening 32 is at least twice the diameter OB of the inter-thigh opening, preferably at least three times the diameter OB of the inter-thigh opening, more preferably at least four times the diameter OB of the inter-thigh opening, and most preferably at least five times the diameter OB of the inter-thigh opening. The cross-sectional area of ​​the central opening 38 is at least twice the diameter OB of the inter-thigh opening, preferably at least three times the diameter OB of the inter-thigh opening, more preferably at least four times the diameter OB of the inter-thigh opening, and most preferably at least five times the diameter OB of the inter-thigh opening.

[0048] like Figure 1 As can be seen, the off-center opening 32 extends entirely within the recessed region 33. If necessary, at least a portion of at least one off-center opening 32 may extend within the recessed region 33.

[0049] The mesh metal insert 3 is inserted into the metal substrate 2 at least partially on one side of the heating surface 12 to make the metal cooking rack 10 compatible with induction heating.

[0050] Figure 4 The mesh metal insert 3 inserted into the metal substrate 2 is shown schematically. Figure 4As can be better seen in the image, the metal substrate 2 has a substrate thickness ES. The substrate thickness ES is advantageously less than or equal to 3.4 mm, preferably less than or equal to 3 mm, and even more preferably less than or equal to 2.5 mm. Preferably, the substrate thickness ES is greater than or equal to 2 mm, and even more preferably greater than or equal to 2.2 mm.

[0051] like Figure 4 As can be better seen in the image, the sidewalls 16 (partially shown) rise around the bottom 13 to form the cooking container 20.

[0052] like Figure 4 As shown, the mesh metal insert 3 extends only in the area of ​​the bottom 13 and does not reach the sidewall 16. More specifically, the mesh metal insert 3 extends over the entire area of ​​the bottom 13. It should be noted that... Figure 4 The illustration is schematic, and the mesh metal insert 3 does not completely cover the bottom 13. In other words, the metal substrate 2 can be seen through the inter-strand opening 31 of the mesh metal insert 3. Alternatively, the mesh metal insert 3 may not necessarily extend over the entire bottom 13. Alternatively, the mesh metal insert 3 may extend over at least a portion of the sidewall 16.

[0053] Figure 4 The metal cooking rack 10 shown can be obtained through the following process.

[0054] A mesh metal insert 3 is disposed on a metal substrate 2. The mesh metal insert 3 is pre-curled at at least one non-central opening 32 by performing at least one local impact operation on its free edge. This local impact operation locally deforms the free edge of the mesh metal insert 3 and inserts it into the metal substrate 2. The high deformability of the mesh metal insert 3 facilitates this operation. Preferably, the mesh metal insert 3 is pre-curled at multiple non-central openings 32 by performing a local impact operation on the free edge of the mesh metal insert 3 at the non-central opening 32. Advantageously, the non-central openings 32 that have undergone deformation for pre-curling surround the central region 35. Therefore, during the pre-curling operation, only a portion of the mesh metal insert 3 is inserted into the metal substrate 2. Furthermore, this insertion can be partial. In other words, the mesh metal insert 3 is not necessarily fully inserted into the metal substrate 2 in the deformed region of the mesh metal insert 3.

[0055] The mesh metal insert 3, pre-rolled onto the metal substrate 2, can then be assembled in a more durable manner via an impact operation. Unlike the pre-rolling operation, the impact operation involves the entire surface of the mesh metal insert 3. A shape can be formed on the die at the non-central opening 32 to create a recessed area 33 during the impact operation. Pre-rolling the mesh metal insert 3 onto the metal substrate 2 allows for good positioning of the mesh metal insert 3 on the metal substrate 2 before and during the impact operation. The impact operation allows for durable assembly of the mesh metal insert 3 within the surface of the metal substrate 2.

[0056] Alternatively or additionally, the mesh metal insert 3 can be pre-curled at the central opening 38 by performing at least one local impact operation on the free edge of the mesh metal insert 3, which locally deforms the free edge of the mesh metal insert 3 and inserts it into the metal substrate 2.

[0057] Figure 5 A variation of the embodiment is shown, in which the metal cooking support 10 includes a non-stick coating 1 and a protective coating 5. The non-stick coating 1 forms the cooking surface 14 of the cooking surface 11. The protective coating 5 forms the heating surface 15 of the heating surface 12. The metal substrate 2 has the non-stick coating 1 on one side of the cooking surface 11. The metal substrate 2 and the mesh metal insert 3 have the protective coating 5 on one side of the heating surface 12. The mesh metal insert 3 is inserted into the metal substrate 2 on the heating surface 12 side. Due to the inter-strand openings 31 between the strands 30 of the mesh metal insert 3, the mesh metal insert 3 does not completely cover the metal substrate 2 in the bottom region 13.

[0058] The non-stick coating 1 is, for example, a PTFE-type coating (polytetrafluoroethylene; in other words, a PTFE-type fluoropolymer-based coating), or a ceramic-type coating, or a sol-gel-type coating (in other words, a coating synthesized via a sol-gel route). The non-stick coating 1 can be a single layer or multiple layers. The non-stick coating 1 can also be one or more silicone or silicone-polyester resin-based coatings.

[0059] The protective coating 5 may be, for example, a PTFE-type coating (in other words, a PTFE-type fluoropolymer-based coating), an enamel-type coating, a paint-type coating, a ceramic-type coating, or a sol-gel-type coating (in other words, a coating synthesized via a sol-gel route). The protective coating 5 may be a single layer or multiple layers. The protective coating 5 may also be one or more silicone resin or silicone-polyester resin-based coatings.

[0060] Table 1 summarizes the characteristics of samples #1 to #4 of the mesh metal insert 3, which were inserted into a metal substrate 2 made of aluminum alloy with a diameter of 28 cm and a thickness of 2.4 mm to obtain cooking supports 10 numbered 1 to 4.

[0061] [Table 1] Table 2 shows the results of tests performed using the different induction heating plates and cooking racks 10 numbered 1 to 4.

[0062] [Table 2] (*) Unstable operation oscillating between 2200 and 2700 W The four cooking supports 10 tested (numbered 1 to 4) are lighter than conventional cooking supports that include inserts made of ferromagnetic material in the form of perforated plates, because less material is used to manufacture the mesh metal inserts 3 and the thickness of the metal substrate 2 is reduced.

[0063] Although the metal substrate 2 is thinner than that typically used with perforated plate-type ferromagnetic inserts, the four cooking supports 10 tested (numbered 1 to 4) exhibited satisfactory resistance to deformation. This is because the mesh metal insert 3 has lower mechanical strength relative to the perforated plate. As a result, the cooking supports 10 are less sensitive to deformation caused by the different expansion of the materials of the metal substrate 2 and the mesh metal insert 3. Furthermore, the force required to insert the mesh metal insert 3 into the metal substrate 2 is less than the force required to insert the perforated plate into the metal substrate 2, which also allows for a reduction in the thickness of the metal substrate 2.

[0064] Figure 6 and Figure 7 A metal cooking rack 100 with a heating surface 110 is shown. The metal cooking rack 100 can be specifically made of... Figure 1 and Figure 4 The metal cooking rack 10 shown is formed, or is made of Figure 5 The metal cooking rack 10 shown is formed. The metal cooking rack 100 includes sidewalls 123 rising around the bottom 122 of the heating surface 110 to form a cooking container 124. Alternatively, the metal cooking rack 100 may not necessarily form a cooking container 124. The metal cooking rack 100 may in particular form a cooking plate.

[0065] Figure 6 A cooking utensil 140 is shown, which includes a metal cooking support 100 forming a cooking container 124 and a gripping member 150 mounted on the cooking container 124. Figure 6In the illustrated embodiment, the gripping member 150 is fastened to the cooking container 124 by at least one rivet 151. For this purpose, the rivet 151 is installed in a hole disposed in the side wall 123 of the cooking container. If desired, multiple rivets 151 can be used to fasten the gripping member 150 to the cooking container 124. Preferably, two to four rivets 151 are used to fasten the gripping member 150 to the cooking container 124. Alternatively, the gripping member 150 can be fastened to the side wall 123 by welding or threading to a stud welded to the side wall 123. If desired, another gripping member can be fastened to the side wall 123 of the cooking container 124 by at least one additional rivet, by welding, or by threading to a stud welded to the side wall 123.

[0066] Figure 7 An electric cooking appliance 160 is shown, which includes a metal cooking support 100 associated with an induction cooker 170. The metal cooking support 100, forming a cooking container 124, is arranged in a heating base 175 including the induction cooker 170. The bottom 122 rests on the induction cooker 170. If desired, the cooking container 124 may include at least one gripping member 155. Figure 7 In the illustrated embodiment, the cooking container 124 includes two opposing gripping members 155. Each gripping member 155 is fastened to the cooking container 124 by at least one rivet 156. For this purpose, the rivet 156 is installed in a hole disposed in the sidewall 123. If desired, multiple rivets 156 can be used to fasten the gripping member or each gripping member 155 to the cooking container 124. Preferably, two to four rivets 156 are used to fasten the gripping member or each gripping member 155 to the cooking container 124. Alternatively, the gripping member or at least one gripping member 155 can be fastened to the sidewall 123 by welding or threading to a stud welded to the sidewall 123.

[0067] Alternatively, the metal cooking rack 10 may not necessarily include a non-stick coating 1 on the cooking surface 14 forming the cooking surface 11 and a protective coating 5 on the heating surface 15 forming the heating surface 12.

[0068] Alternatively, the mesh metal insert 3 may not necessarily have a central opening 38.

[0069] Alternatively, the mesh metal insert 3 may not necessarily have multiple non-central openings 32 in its central portion. The mesh metal insert 3 may, in particular, have at least one non-central opening 32 in its central portion, the cross-section of which is at least twice the diameter OB of the inter-strand opening, preferably at least three times the diameter OB of the inter-strand opening, more preferably at least four times the diameter OB of the inter-strand opening, and most preferably at least five times the diameter OB of the inter-strand opening. The mesh metal insert 3 may also have no non-central openings.

[0070] Various modifications and / or improvements that will be obvious to those skilled in the art may be made to the embodiments of the invention described herein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A metal cooking support (10) compatible with induction heating, having a cooking surface (11) and a heating surface (12), comprising a metal substrate (2) made of aluminum or an aluminum alloy, and a mesh metal insert (3) made of a ferromagnetic material, the mesh metal insert (3) being at least partially inserted into the metal substrate (2) on one side of the heating surface (12), the mesh metal insert (3) having an inter-strand opening diameter (OB), the mesh metal insert (3) having at least one non-central opening (32) in its central portion, characterized in that, The cross-section of at least one non-central opening (32) is at least twice the diameter of the inter-girdle opening (OB), preferably at least three times the diameter of the inter-girdle opening (OB), more preferably at least four times the diameter of the inter-girdle opening (OB), and most preferably at least five times the diameter of the inter-girdle opening (OB).

2. The metal cooking rack (10) according to claim 1, characterized in that, The mesh metal insert (3) has a central opening (38) in its central portion.

3. A metal cooking support (10) compatible with induction heating, having a cooking surface (11) and a heating surface (12), comprising a metal substrate (2) made of aluminum or aluminum alloy, and a mesh metal insert (3) made of ferromagnetic material, the mesh metal insert (3) being at least partially inserted into the metal substrate (2) on one side of the heating surface (12), the mesh metal insert (3) having an inter-strand opening diameter (OB), characterized in that, The mesh metal insert (3) has a central opening (38) and / or at least one non-central opening (32) in its central portion, the cross section of which is at least twice the diameter of the inter-thigh opening (OB), preferably at least three times the diameter of the inter-thigh opening (OB), more preferably at least four times the diameter of the inter-thigh opening (OB), and preferably at least five times the diameter of the inter-thigh opening (OB).

4. The metal cooking rack (10) according to any one of claims 1 to 3, characterized in that, The heating surface (12) has a recessed region (33), and at least a portion of at least one non-central opening (32) extends in the recessed region.

5. The metal cooking rack (10) according to claim 4, characterized in that, At least one non-central opening (32) extends entirely within the recessed area (33).

6. The metal cooking rack (10) according to any one of claims 4 or 5, characterized in that, The recessed area (33) is annular.

7. The metal cooking rack (10) according to any one of claims 4 to 6, characterized in that, The depth of the recessed area (33) is between 0.1 and 0.5 mm, preferably between 0.2 and 0.4 mm.

8. The metal cooking rack (10) according to any one of claims 1 to 7, characterized in that, The mesh metal insert (3) has a plurality of non-central openings (32) in its central portion, preferably at least three non-central openings (32), the cross-section of which is at least twice the diameter of the inter-thigh opening (OB), preferably at least three times the diameter of the inter-thigh opening (OB), more preferably at least four times the diameter of the inter-thigh opening (OB), and preferably at least five times the diameter of the inter-thigh opening (OB).

9. The metal cooking rack (10) according to claim 8, characterized in that, The non-central opening (32) is longer in the radial direction than in the transverse direction.

10. The metal cooking rack (10) according to any one of claims 8 or 9, characterized in that, The metal cooking rack includes at least 6 off-center openings (32), preferably 12 off-center openings (32).

11. The metal cooking rack (10) according to any one of claims 8 to 10, characterized in that, The non-central opening (32) is distributed in the annular region (34) of the mesh metal insert (3).

12. The metal cooking rack (10) according to any one of claims 8 to 11, characterized in that, The non-central opening (32) is regularly distributed around the central region (35) of the mesh metal insert (3).

13. The metal cooking rack (10) according to any one of claims 1 to 12, characterized in that, The mesh metal insert (3) has a central opening (38) with a cross-section that is at least twice the diameter of the inter-thigh opening (OB), preferably at least three times the diameter of the inter-thigh opening (OB), more preferably at least four times the diameter of the inter-thigh opening (OB), and most preferably at least five times the diameter of the inter-thigh opening (OB).

14. The metal cooking rack (10) according to any one of claims 1 to 13, characterized in that, The substrate thickness (ES) of the metal substrate (2) is less than or equal to 3.4 mm, preferably less than or equal to 3 mm, and even more preferably less than or equal to 2.5 mm.

15. The metal cooking rack (10) according to any one of claims 1 to 14, characterized in that, The mesh metal insert (3) is made of ferritic stainless steel, preferably of type 430 stainless steel.

16. The metal cooking rack (10) according to any one of claims 1 to 15, characterized in that, The metal cooking rack has a bottom (13) configured to rest on an induction heating device.

17. The metal cooking rack (10) according to claim 16, characterized in that, The bottom (13) is flat.

18. The metal cooking rack (10) according to any one of claims 16 or 17, characterized in that, The sidewall (16) rises around the bottom (13) to form a cooking container (20).

19. The metal cooking rack (10) according to any one of claims 1 to 18, characterized in that, The metal substrate (2) has a non-stick coating (1) on the cooking surface (14) that forms the cooking surface (11).

20. The metal cooking rack (10) according to any one of claims 1 to 19, characterized in that, The metal substrate (2) and the mesh metal insert (3) are covered with a protective coating (5) on the heating surface (15) that forms the heating surface (12).

21. A cooking utensil (140) comprising a metal cooking support (100) and a gripping member (150) mounted on the metal cooking support (100), characterized in that, The metal cooking rack (100) conforms to any one of claims 1 to 20.

22. An electric cooking appliance (160) comprising a metal cooking support (100) associated with an induction heating oven (170), characterized in that, The metal cooking rack (100) conforms to any one of claims 1 to 20.

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