FR2865107A1 - Bakery oven with fan-assisted circulation is made from a series of sub-assemblies for easy assembly on site by stacking one on top of another - Google Patents

Abstract

The oven is made from a number of sub-assemblies: an upper sub-assembly (A) with a hood and extractor fan; a second sub-assembly (B) with two cooking chambers (3), an inner lining (4) and an outer shell (6) with insulation (5) between, and a male frame of square-section tubing (7); a third sub-assembly (C) also has two cooking chambers, an inner lining, outer shell and insulation, and has a female upper frame (8) to receive the male frame on the second sub-assembly above it. The lower end of the third sub-assembly has a male frame for connecting with another female frame on the bottom sub-assembly (D), which has hot gas recirculating fans (10). The sub-assemblies are fitted together on site with a refractory mastic or a sealing strip e.g. of fibreglass between them.

Description

BAKERY FURNACES WITH RECYCLING TYPE A

SIMPLIFIED ASSEMBLY

  Recycling-type bakery ovens (ie flue gas ovens around bread baking chambers) are usually delivered to the baker's, completely dismantled, in order to make their access to the bakery possible. causes a long onsite assembly that immobilizes the bakehouse for several days. This assembly also requires know-how from technicians with unpleasant on-site operations such as thermal insulation of the furnace. In addition, the risk of errors is always possible.

  The present invention request consists in delivering a recycling oven in several subassemblies in order to allow access to the bakery, but these subassemblies are completely finished. The thermal insulation in particular is carried out in the factory. It remains only on site to stack the different subassemblies to reconstruct the oven very quickly.

  The present invention application will be better understood by examining FIGS. 1 and 2.

  Figure 1 shows a transverse vertical section (au) of a 4-storey floor oven with different subassemblies drawn above the others ready to be stacked.

  Figure 2 shows a longitudinal vertical section (bb) of the same furnace drawn under the same conditions.

  In our example the furnace consists of 4 subsets A, B, C, D. The subset A comprises the hood (1) with its exhaust fan (2).

  The subassembly B comprises two cooking chambers (3) with the inner casing of the oven (4) the insulator (5) and the outer casing (6) and a welded square tube male frame (7). at (4).

  The subassembly C also comprises 2 cooking chambers (3) the inner casing (4) the insulator (5) the outer casing (6) and a U-shaped upper frame (8) and a frame lower male (7) square tube both welded to the inner casing of the oven (4).

  The subset D comprises the inner casing (4) the insulator (5) and the outer casing (6) it also includes the open hearth (9) and the recirculation (10) (set of turbines mounted on a shaft through the furnace and ensuring the flow of combustion gases around the cooking chambers).

  The subassembly D also comprises the female frame (8) welded to the inner casing (4).

  Prior to assembling the oven, the seal is prepared at the level of the inner casing of the oven (4) by placing inside the female frames (8) either refractory mastic or a fiberglass sealing profile. for example.

  The assembly of the oven consists simply of stacking the subassemblies. The male and female frames interlocking into each other realize the positioning of the subassemblies relative to each other and the tightness of the oven.

  The subset A does not require sealing it is simply placed and bolted on the top of the subassembly B. In Figure 2 we also see the doors B opening of the cooking chambers.

Claims (3)

  1. Simplified field assembly recycling type bakery oven characterized by simple stacking of fully completed subassemblies.   2. Bakery oven according to claim 1 characterized in that the subassemblies are positioned relative to each other through the interlocking of horizontal frames: the male frame integral with a sub-assembly is embedded in the female frame integral with the lower subassembly.   3. bakery oven according to the preceding claim characterized in that the sealing of the furnace is carried out either by refractory mastic placed before the stacking of the subassemblies inside the female frames or by the placement of a seal within these same female frames.