RU2102914C1 - Container for preparing food without container bottom deformation - Google Patents

Container for preparing food without container bottom deformation Download PDF

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Publication number
RU2102914C1
RU2102914C1 RU94036747A RU94036747A RU2102914C1 RU 2102914 C1 RU2102914 C1 RU 2102914C1 RU 94036747 A RU94036747 A RU 94036747A RU 94036747 A RU94036747 A RU 94036747A RU 2102914 C1 RU2102914 C1 RU 2102914C1
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RU
Russia
Prior art keywords
plate
container
metal
paragraphs
holes
Prior art date
Application number
RU94036747A
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Russian (ru)
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RU94036747A (en
Inventor
Ален Кудюрье
Жан-Франсуа Брассе
Жорж Куассар
Филипп Майяр
Original Assignee
Себ С.А.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR9312196 priority Critical
Priority to FR9312196A priority patent/FR2711050B1/en
Priority to FR9401710 priority
Application filed by Себ С.А. filed Critical Себ С.А.
Publication of RU94036747A publication Critical patent/RU94036747A/en
Application granted granted Critical
Publication of RU2102914C1 publication Critical patent/RU2102914C1/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay

Abstract

FIELD: food-processing industry. SUBSTANCE: container is made in the form of metal or low-melting point disk with concave bottom having plate manufactured from material with properties different from that of disk material. Plate is built into bottom to overlap its small part. EFFECT: increased efficiency, convenient usage and simplified construction. 14 cl, 2 dwg

Description

 The invention relates to a container for cooking, in which a reduction in the deformation of the bottom due to heating and sharp fluctuations in temperature during its use is achieved.
 As a rule, cooking containers are made of pressed aluminum sheet.
 When heated, the surface of the bottom of the cookware in contact with the stove or burner is exposed to a much higher temperature than the temperature of the inner surface of the bottom.
 The consequence of this is thermal expansion, leading to bulging of the bottom of the dishes.
 To prevent this undesirable phenomenon, the bottom of the dishes is given some concavity so that when heated it becomes almost flat under the influence of thermal expansion. When cooled, it theoretically should again become concave.
 However, as practice shows, after a certain number of repeated cycles of heating and cooling, the concavity of the bottom decreases, then reduces to zero, and ultimately the bottom becomes convex again, which makes the dishes virtually unusable.
 The foregoing is explained by the special properties of aluminum. During repeated cycles of heating and cooling, the elastic deformation zone is exceeded, resulting in the appearance of irreversible deformation.
 In British patent N 2008390, CL A 47 J 36/02, 1979 describes a container for cooking containing metal walls and a bottom with a plate made of metal attached to its outer surface, the mechanical, thermal and physical properties of which differ from the properties of the metal of the container, the plate being attached to the bottom with the help of several separately located fastening sections of a small area, for example, by spot welding.
 In a known container, the plate is attached to the bottom in order to reduce the possibility of areas with a higher heating temperature appearing on the inner surface of the bottom, while the likelihood of irreversible deformation of the bottom remains.
 The objective of the invention is to eliminate the irreversible deformation of the bottom of the container for cooking, which allows to increase its service life.
 The solution to this problem is provided by the fact that in the container for cooking containing walls made of a pressed sheet of metal and a bottom with a plate made of metal attached to it, the mechanical, thermal and physical properties of which differ from the properties of the metal of the container, the bottom has a concave shape and the plate is embedded in it and overlaps a small part of it.
 This solution to the problem reduces the likelihood of irreversible deformation of the bottom of the tank and increase its service life. Due to the fact that the plate is embedded in the localized zone of the bottom of the dish and the fact that its mechanical, thermal and physical properties are different from the properties of the metal or alloy that forms the rest of this dish, the slightest irreversible deformation of the bottom can be prevented even after many repeated heating cycles and cooling.
 As tests have shown, it is important that the plate is sealed only in a limited area of the bottom.
 The container can be made of aluminum sheet, and the plate is made of steel, preferably stainless steel, while the concavity of the bottom can be such that when it is placed on the stove, its bearing surface located around the stove with different properties can touch the stove, whereas the plate itself may not touch the latter.
 Concavity is obtained in the process of stamping a metal or alloy wheel into which a plate is preliminarily or fully embedded.
 The plate can cover 5-30% of the bottom surface, have holes and be partially embedded in the bottom, so that the metal of the bottom completely fills the holes. Thanks to this embedment, the plate is slightly elevated with respect to the surface of the bottom.
 The sealing of the plate into the metal of the bottom of the dishes can be performed by cold pressing, as described in the application for European patent N 509860, filed on behalf of the applicant, or by welding, soldering or gluing.
 The plate may have a thickness of 3/10 to 5/10 mm and be embedded in the bottom to a depth of 0.5 / 10 to 1.5 / 10 mm with a thickness of the aluminum bottom of 2.5 to 5 mm.
 The plate may be located next to the groove made in the bottom. If necessary, the groove can be made around the circumference of the plate.
 The plate may be in the form of a disk or ring and centered or not centered with respect to the bottom of the container.
 The diameter of the holes made in the plate can be less than twice the distance between the two holes and can be about 3 mm, and the distance between the two holes can be approximately equal to 2 mm.
 The plate can be divided into several sectors or consist of several elements.
 Other features and advantages of the invention will be apparent from the following detailed description.
 In FIG. 1 shows a disk blank for stamping the proposed capacity, top view; in FIG. 2 - disk, sectional view.
 In FIG. 1 and 2 show a disk cut out of sheet metal or an alloy such as aluminum. Such a disk is stamped according to a known technology to form cookware like a frying pan or pan having a bottom mounted on a stove or burner.
 In FIG. 1 dashed circle C, denoting the circumference of the bottom 1 of the tank.
 From practice it is also known that when stamping the disk 3, the specified bottom 1 is made somewhat concave.
 According to the invention, in the central part of the bottom 1 there is provided a plate 2 of metal or alloy, the properties of which are different from those of the metal or alloy of which the disk 3 is made.
 As can be seen from FIG. 2, the plate 2 is embedded in the metal of the bottom 1, and the circumference 2a of this plate 2 is adjacent to the groove 4 made in the bottom 1.
 At the end of stamping the disk 3, the concavity of the bottom 1 is such that when it is installed on the stove, the surface 5 of the bottom located around the plate 2 touches the stove, while the surface of the plate 2 does not touch the latter.
 It is advisable that the disk 3 was made of aluminum sheet with a thickness of 2.5 to 5 mm.
 Plate 2 is preferably made of stainless steel.
 The specified plate 2 should preferably overlap from 5 to 30% of the surface of the bottom 1. It is such a small percentage of overlapping of the bottom 1 by the plate 2 that allows you to get the best results both in the resistance to deformation of the bottom 1 under the influence of repeated heating and cooling cycles, and from the point of view of heat transfer and distribution temperature.
 Such results are determined precisely by partial termination of the plate 2 in the central zone of the bottom of the dishes and the difference in the properties of steel and aluminum. This prevents the bottom deformation from becoming irreversible in the conditions of repeated heating and cooling cycles.
 In the embodiment shown in FIG. 1 and 2, the plate 2 has openings 6, for example, of circular shape, evenly spaced from each other and distributed over the entire surface of the plate. This plate 2 is partially embedded in the bottom 1. The sealing of the plate 2 can be carried out by cold pressing, as described in European Patent Application No. 509860, filed on behalf of the applicant.
 Thus, the plate 2 is rigidly connected with the bottom 1 of the dishes in a large number of points and prevents any deformation of the bottom 1 due to the properties of the steel from which it is made.
 It is sufficient that the plate 2 has a thickness of 3/10 to 5/10 mm (with a thickness of the aluminum bottom of 2.5 to 5 mm). Her embedment in the bottom 1 to a depth of 0.5 / 10 to 1.5 / 10 mm is enough to obtain very good results. It should be noted that a too deep insertion of the plate 2 into the metal of the bottom 1 leads to undesirable results.
 As shown in FIG. 1, the plate 2 is made in the form of a disk. However, it can also be made in the form of a polygon or ring. If necessary, the plate 2 can be divided into several sections or performed in the form of a lattice.
 The diameter of the holes 6 of the plate 2 is not critical. Nevertheless, it is advisable that their diameter be no more than twice the distance between two adjacent holes.
 So, for example, the holes 6 may have a diameter of the order of 3 mm with a distance between two adjacent holes of about 2 mm.
 Here are the results of comparative tests of two pans, one of which was made according to traditional technology, and the other in accordance with the invention.
 The pans were the same size and were made of 3.4 mm thick aluminum sheet.
 A frying pan made in accordance with the invention had a stainless steel disk of 0.5 mm thickness and 75 mm diameter in the bottom.
Both pans were subjected to repeated cycles of abrupt heating and cooling (heating to 250 ° C, followed by cooling with tap water to approximately 20 ° C).
 Irreversible deformation of the bottom of a conventional pan was recorded after 30 cycles described.
 In the case of using a pan made according to the invention, irreversible deformation of the bottom occurred only after 300 repeated cycles of heating and cooling.
 It is obvious that the invention is not limited to the examples described above and that all kinds of changes can be made to them, provided that the scope of the invention is preserved.
 So, for example, the plate 2 can have any desired shape and need not be located in the center of the bottom of the dishes.
 This plate can be made, for example, in the form of a star with any number of rays. The shape of the plate may be asymmetric, and it may be provided with a branch oriented in the desired direction, for example in the direction of the handle of the dishes.

Claims (14)

 1. A cooking container containing walls made of metal and a bottom with a plate attached to it made of metal, the mechanical, thermal and physical properties of which differ from the properties of the metal of the tank, characterized in that the bottom has a concave shape and the plate is embedded in it covers a small part of it.
 2. The container according to claim 1, characterized in that it is made of aluminum sheet, and the plate is made of steel.
 3. The container according to claim 1 or 2, characterized in that the concavity of the bottom is such that when it is placed on the stove, the supporting surface of the bottom located around the stove with different properties touches the stove, while the stove itself does not touch the latter.
 4. Capacity according to any one of paragraphs.1 to 3, characterized in that the plate covers 5 to 30% of the surface of the bottom.
 5. A container according to any one of claims 1 to 4, characterized in that the plate has openings and is partially embedded in the bottom.
 6. Capacity according to any one of paragraphs.1 to 5, characterized in that the plate has a thickness of 3/10 5/10 mm and is embedded in the bottom to a depth of 0.5 / 10 1.5 / 10 mm with a thickness of aluminum bottom 2.5 5 mm
 7. Capacity according to any one of paragraphs.1 to 6, characterized in that the plate is located next to the groove made in the bottom.
 8. Capacity according to any one of paragraphs.1 to 7, characterized in that the plate is made in the form of a disk or ring.
 9. The container according to any one of paragraphs.1 to 7, characterized in that the plate is centered with respect to the bottom of the tank.
 10. The container according to any one of paragraphs.1 to 7, characterized in that the plate is not centered with respect to the bottom of the tank.
 11. A container according to any one of claims 1 to 7, characterized in that the diameter of the holes made in the plate is less than twice the distance between the two holes.
 12. The container according to claim 11, characterized in that the holes have a diameter of about 3 mm, and the distance between the two holes is approximately 2 mm.
 13. The capacity of claim 8, characterized in that the plate is divided into several sectors.
 14. The container according to claim 1, characterized in that the plate consists of several elements.
RU94036747A 1993-10-13 1994-10-07 Container for preparing food without container bottom deformation RU2102914C1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9312196 1993-10-13
FR9312196A FR2711050B1 (en) 1993-10-13 1993-10-13 Cooking container with non-deformable bottom.
FR9401710 1994-02-15

Publications (2)

Publication Number Publication Date
RU94036747A RU94036747A (en) 1996-11-10
RU2102914C1 true RU2102914C1 (en) 1998-01-27

Family

ID=9451797

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94036747A RU2102914C1 (en) 1993-10-13 1994-10-07 Container for preparing food without container bottom deformation

Country Status (5)

Country Link
FR (1) FR2711050B1 (en)
RU (1) RU2102914C1 (en)
SG (1) SG43932A1 (en)
TR (1) TR28595A (en)
ZA (1) ZA9407753B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2897251B1 (en) 2006-02-14 2013-07-12 Seb Sa ANODIZED CULINARY ARTICLE AND METHOD OF MANUFACTURING SUCH ARTICLE
FR3003456B1 (en) 2013-03-20 2015-03-27 Seb Sa Method for determining a performance index of a culinary ustensile for a predetermined cooking temperature for the purpose of evaluating nutritional gain
FR3006161B1 (en) 2013-05-30 2015-12-04 Seb Sa Cooking container having a background plate having improved hitching means

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE552901C (en) * 1928-12-23 1932-06-20 Wmf Wuerttemberg Metallwaren Cookware
GB410237A (en) * 1932-12-12 1934-05-17 Richard Howard Halbeard Improvements in cooking utensils and kettles
CH237166A (en) * 1942-02-09 1945-04-15 August Wellner Soehne Aktienge Cooking, roasting and baking dishes.
JPS6179422A (en) * 1984-09-20 1986-04-23 Regal Ware Cooking kettle
DE509860T1 (en) * 1991-03-27 1993-06-09 Seb S.A., Selongey, Cote D'or, Fr MOLDED PART MADE FROM A RELATIVELY SOFT METAL PLATE AND COOKING VESSEL WITH SUCH A MOLDED PART.

Also Published As

Publication number Publication date
SG43932A1 (en) 1997-11-14
ZA9407753B (en) 1995-05-17
RU94036747A (en) 1996-11-10
TR28595A (en) 1996-11-04
FR2711050B1 (en) 1995-12-29
FR2711050A1 (en) 1995-04-21

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