Door for a high-temperature oven

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS A high-temperature oven, in particular a laboratory high-temperature oven, is constructed in a conventional manner and is therefore not shown in the drawings and is not described below.
The present invention relates to the door of the high-temperature oven.
The door of the high-temperature oven is made up of an internal door 10 shown in FIG.
1 and an external door 30 shown in FIG.
3.
The internal door 10 is made of stainless-steel sheet, an integral metal-sheet part first being punched, as is shown in FIG.
2.
The metal-sheet part is folded so that a flat door leaf 12 is produced which closes the open side of the high-temperature oven.
At the four side edges of the door leaf 12, an external edge strip 14 is bent away at right angles and its external edge is bent away further at right angles to form an internal edge strip 16, which consequently extends parallel again to the plane of the door leaf 12.
The U-shaped profile formed by the door leaf 12, the external edge strips 14 and the internal edge strips 16 is used in a known manner to receive thermally insulating material (not shown).
At the two vertically extending external edge strips 14, an internal door carrier 20 is integrally formed on at the top and bottom in each case during the punching-out of the metal sheet part.
The door carriers 20 are designed as lugs which continue upwards or downwards in the plane of the lateral external edge strips 14.
The lugs have a tab 22 which projects vertically upwards or downwards and which is adjoined by a supporting spacer edge 24.
The supporting spacer edge 24 extends parallel to the upper or lower external edge strip 14 of the internal door 10 and is disposed with respect to the upper or lower edge strip 14 at a distance which, in a manner described later, defines the width of a separating gap 18 between the internal door 10 and the external door 30.
The external door 30 shown in FIG.
3 is likewise punched and bent integrally out of a steel sheet.
The external door 30 has a door leaf 32 which has larger side dimensions than the door leaf 12 of the internal door 10