DE10332340A1 - Cooking appliance and food support - Google Patents

Abstract

The invention relates to a cooking device (10) with an oven muffle (14) which can be loaded from the outside and into which at least one cooking support (18) can be introduced or inserted, and which has walls (141, 142) of structured metal sheet. It is provided that at least one wall (141, 142) of the oven muffle (14) has a largely uniformly distributed and regular stiffening vault structure (16). DOLLAR A The invention further relates to a Gargutauflage (18) for a cooking appliance (10), preferably in a Ofenmuffel einbring- or is inserted and which has a largely uniformly distributed and regular stiffening Völbstrukturierung (16). DOLLAR A The Völbstrukturierung (16) may in particular each embossed to a surface side honeycomb, circular, oval or polygonal pattern with each enclosed by the patterns and the other surface side bulged surface portions (162).

Description

The The present invention relates to a cooking appliance according to the preamble of the claim 1 and a Gargutauflage according to the preamble of claim 9.

conventional cooking appliances have one from the outside accessible and oven-stuffable oven muffle, the more common Way walls made of sheet metal. While the warming the open muffle to temperatures of over 200 ° C expand the metal sheets the oven muffle walls by a certain length out. As the adjacent and firmly connected to the back wall usual way side walls There is no play to compensate for stretching movements at too high thermal expansion the danger of warping the walls. This can also be a sudden Occurrence of distortions or to turn over a curvature, what is known as an unwanted "plopping effect" These effects can be avoided the walls provided with a larger wall thickness which gives them overall greater dimensional stability can. Larger wall thicknesses of However, oven muffle can for reasons the material economy as well as for weight reasons undesirable be. Another disadvantage of thicker walls is the significantly longer heating time the oven muffle until it reaches its desired cooking temperature Has.

The same relationships apply in principle also for Gargutauflagen, so-called baking trays. Again, there may be heat distortion and strains come, which can lead to a jumping of the sheet, the so-called "plopping effect". This effect can also be avoided by the Material of the cooking support is made sufficiently thick. The disadvantage here, however, is the longer heating time due the to be heated larger wall thicknesses of Gargutauflage.

From the DE 44 437 58 C2 a baking and roasting oven is known in which a base plate is disposed below an insulated baking muffle, which is composed of two plates with multiple embossments. The plates are arranged one above the other, with the embossments of the two plates at least partially touching. The two-layer design of the base plate and the touching embossments should ensure a high rigidity of the plate, while low sheet thicknesses can be used.

Gargutauflagen with stiffening characteristics in different forms are for example from the JP 61 079 919 A and from the JP 63 226 544 A known.

A Gargutauflage with a structured surface is still from the US 27 18 854 A known. This structured surface is intended to prevent punctual contact of a food to be cooked on the support surface and thus local overheating of the food.

A method for the vaulting of thin walls and films is from DE 44 37 986 A1 known. In this case, a material web to be structured is guided over curved lines or punctiform supporting contours and acted upon from the outside with an overpressure and / or from the inside with a negative pressure. Between the web and the support contours a flexible material web is guided. It can be used to produce multidimensional, offset vault structures, for example quadrangular, hexagonal, pentagonal or triangular vaults.

Of the Present invention is based on the object, a cooking appliance with a Oven muffle available to put in as possible short time to its operating temperature, and the walls with preferably greater dimensional stability having. Another object of the invention is a Gargutauflage preferably low weight available to provide, which has sufficient dimensional stability in operation at any time.

These Task is achieved with the subject of the independent claims. Features of advantageous developments emerge from the respective dependent Claims.

The cooking appliance according to the invention, in which at least one wall of a Ofenmuffel has a stiffening Völbstrukturierung offers over known cooking appliances the advantage that the walls of the oven muffle can identify a very low material thickness and thereby have sufficient stability. The smallest possible wall thickness is desirable for reasons of thermal conductivity in the interests of the fastest possible heating time when cooking. Furthermore, the material thickness should be as low as possible for cost and weight reasons. However, since a relatively small wall thickness can lead to utilization of the walls and thus to undesirable effects in the material expansion of the oven muffle walls taking place during cooking (so-called "pop effect"), a minimum material thickness is indispensable for smooth surfaces, which are often introduced into the walls of oven muffles Ribs or recesses may be undesirable for various design and functional reasons Stiff Völbstrukturierung the wall surfaces a way out because a relatively finely structured warping at low wall thickness leads to sufficient stiffness of the walls. By a largely evenly distributed over one or more walls of the furnace muffle vaulting these walls can be given sufficient strength at relatively low thickness sufficient strength to avoid the unwanted utilization in the thermal expansion occurring in the cooking mode.

The same principles apply also to Gargutauflagen, which is too low material thickness due to arching their occurring during cooking thermal expansion and in certain circumstances even in the oven muffle can jam, also here allows one Evenly distributed vault structuring the use of low material thickness while maintaining the necessary Dimensional stability.

The vaulted structuring can, for example, in the form of each to a surface side impressed Honeycomb, circle, oval or polygon pattern with each other surface side bulged out surface sections be educated. The patterns embossed into the wall can each a polygon edge length or have a diameter of about 5 mm to 20 mm. The surface sections can across from the pronounced Structures should be raised by approx. 0.1 mm to 3 mm.

Preferably have the back wall as well as the side walls and the top and bottom of the oven muffle a Völbstrukturierung invention on. Preferably, the entire Gargutauflage such vaulted structuring on.

The Walls of the Oven muffle and / or the Gargutauflage can be made of coated metal sheet with introduced vault structuring consist, in which case preferably enameled steel sheet used can come.

One particular advantage of evenly distributed vaulted structuring is that it can also be easily provided joining surfaces. The Structuring hinders, for example, a welding of the abutting walls of the Oven muffle in no way. Likewise, the bordering edge can also the Gargutauflage provided with the Völbstrukturierung which does not affect its function in any way.

The Invention will be described below with reference to a preferred embodiment explained in more detail with reference to the accompanying drawings. Showing:

1 a schematic perspective view of a cooking appliance with externally accessible oven muffle,

2 a schematic detail view of the oven muffle of the cooking appliance,

3 a food support with vault structuring,

4 a detail of the vaulting of the oven muffle and the Gargutauflage and

5 a detail section of a provided with the Völbstrukturierung wall or Gargutauflage.

A cooking appliance 10 with a front over a front flap 12 o. Like. Accessible and can be loaded with food oven muffle 14 is a schematic representation of the 1 clarified. The side walls 141 and / or the back wall 142 the oven muffle 14 are preferably made of thin sheet metal, in particular of coated aluminum or, for example, enamelled sheet steel. In the sheet metal surfaces in each case to avoid warping at a thermal expansion of the oven muffle 14 Wölbstrukturierungen 16 introduced in the form of a polygon structure, which is based on the detailed representation of 2 is clarified. Instead of a polygon structure, almost any desired design can be provided, for example with embossed circles, ovals or other shapes, for example polygons.

Another way to use the vault structured sheets shows the 3 Shape of a plan view of a Gargutauflage 18 , a so-called baking tray. Again, the entire plate with a uniformly distributed Völbstrukturierung 16 provided, which can lead to a sufficient dimensional stability at low wall thickness.

4 shows a detailed view of Völbstrukturierung 16 in the embodiment shown consists of embossed honeycomb structures whose edges 161 in each case a curved surface section to the other surface side 162 lock in.

5 shows a schematic sectional view of a wall 141 . 142 the oven muffle 14 or the cooking product support 18 that with a vault structure 16 is provided. Depending on the material thickness of the sheet and the indentations may be sized differently. The dimensions of the individual impressions may, for example, be 5 mm to 25 mm in diameter and 0.1 mm to 3 mm in height. The diameter here is the distance A between two opposite edges 161 designated, depending on the material thickness between approx. 5 mm and about 25 can lie. In the present context, the height h of the individual impressions is the distance between an edge and the highest point of an adjacent surface section 162 designated.

The vaulting 16 gives the sheets provided with a dimensional stability, which allows the use of relatively low wall thickness, without significant heat distortion phenomena occur when heating the sheets.

Preferably, the vault structure 16 each introduced into the sheets before they are coated and joined together and / or otherwise deformed. As has already been clarified on the basis of the schematic representations, the vault structuring remains 16 as a whole so flat that the other forms and functional surfaces of the sheets provided therewith are not affected. Thus, for example, the lateral support surfaces of the Gargutauflage 18 (see. 3 ) also with a vault structure 16 be provided without this leading to any disadvantages in handling.

10

Cooking appliance

12

front flap

14

muffle furnace

141

Side wall

142

rear wall

16

vaulted structuring

161

edge

162

surface section

18

Gargutauflage

A

distance

H

height

Claims (15)

Cooking appliance ( 10 ) with an externally accessible oven-loadable oven muffle ( 14 ), in which at least one cooking product ( 18 ) can be introduced or inserted and the walls ( 141 . 142 ) of structured metal sheet, characterized in that at least one wall ( 141 . 142 ) the oven muffle ( 14 ) a largely evenly distributed and regular stiffening vault structure ( 16 ) having. Cooking appliance according to claim 1, characterized in that the vault structure ( 16 ) embossed honeycomb, circular, oval or polygonal patterns each with embossed edge structures ( 161 ) and curved to the other surface side surface portions ( 162 ) having. Cooking appliance according to claim 2, characterized in that in the wall ( 141 . 142 ) embossed pattern each have an area between about 35 mm ² and about 500 mm ² . Cooking appliance according to claim 2 or 3, characterized in that the curved surface sections ( 162 ) with respect to the embossed edge structures ( 161 ) are raised by about 0.1 mm to about 3 mm. Cooking appliance according to one of the preceding claims, characterized in that the side walls ( 141 ) and / or the back wall ( 142 ) the oven muffle ( 14 ) with a vault structure ( 16 ) are provided. Cooking appliance according to one of the preceding claims, characterized in that the side walls ( 141 ) and / or the back wall ( 142 ) the oven muffle ( 14 ) consist of coated metal sheet. Cooking appliance according to one of the preceding claims, characterized in that the side walls ( 141 ) and / or the back wall ( 142 ) the oven muffle ( 14 ) consist of enamelled sheet steel. Cooking appliance according to one of the preceding claims, characterized in that the side walls ( 141 ) and / or the back wall ( 142 ) the oven muffle ( 14 ) each have a material thickness between about 0.3 mm and about 1.5 mm. Food support ( 18 ) for a cooking appliance ( 10 ) with a furnace muffle ( 14 ), in particular according to one of claims 1 to 8, characterized by a largely uniformly distributed and regular stiffening vault structure ( 16 ). Gargutauflage according to claim 9, characterized in that the vault structure ( 16 ) honeycomb, circular, oval or polygonal patterns, each embossed on a surface side, each with the embossed edge structures ( 161 ) and curved to the other surface side surface portions ( 162 ) having. Gargutauflage according to one of claims 9 or 10, characterized in that the embossed patterns each have an area between about 35 mm ² and about 500 mm ² . Gargutauflage according to one of claims 9 to 11, characterized in that the bulged surface portions ( 162 ) with respect to the embossed edge structures ( 161 ) are raised by about 0.1 mm to about 3 mm. Gargutauflage according to one of claims 9 to 12, characterized in that the Gargutau flage ( 18 ) consists of coated sheet metal. Gargutauflage according to one of claims 9 to 13, characterized in that the Gargutauflage ( 18 ) consists of enamelled sheet steel. Gargutauflage according to one of claims 9 to 14, characterized by a material thickness between about 0.3 mm and about 1.5 mm.