ES351664A1 - Oven - Google Patents

Abstract

A baking or cooking oven 1, Figs. 1 and 2, comprises: an outer mantle 5 enclosing a lining of heat-insulating material 6, such as glass-wool, a plurality of assemblies 10 1 10 2 ..... of endless, steam-tight heating tubes 2, such as tubes 2 1 , 2 2 , 2 3 resting on a support 8, each partially filled with water and having a plurality of superposed loops, of which the lowermost loops 13 define the periphery of a hearth 4, and the other loops are aligned in one or more substantially horizontal levels to define, at each level, a baking or cooking chamber (three multi-deck chambers 3 1 , 3 2 , 3 3 being shown) a support disposed in each chamber for supporting products, such as bread and pastry, so that they receive heat emanating from said heating tubes 2 (three such supports 7 1 , 7 2 , 7 3 , e.g. in the form of shelves or ceramic tiles, being shown) a door for each chamber (three such doors 20 1 , 20 2 and 20 3 being shown) and a source of heat, such as the flame-tube 18 of a burner 17 burning gaseous, liquid or solid fuel, for heating the hearth and thus generating steam in said tubes. The assemblies of tubes may be maintained in position by braces 12 extending from front to rear of the oven. The lowermost loops 13 and the flame-tube 18 may be substantially circular (as shown in Fig. 2), square, rectangular or polygonal. The hearth 4 is preferably provided with a defector 14, Fig. 2, so that the side 15 of each loop 13 receives more heat than the side 16, thus causing the steam generated in the tubes 2 to circulate in the directions indicated by the arrows. The tubes in each assembly, Fig. 1, may be secured together, as by welding 9, and the tube-assemblies may be connected by joints 11, e.g. joints of the type shown at 11 1 and 11 2 . The burner 17 may be at the rear, front or side of the oven. Smoke may be vented from the hearth through a chimney 19. A thermostatic probe 11, Fig. 2, having electrical contacts may be provided on at least one of the tubes 2, the said electrical contacts being connected in series with a thermostat located within a baking or cooking chamber so that the burner 17 is extinguished when said tube, but not necessarily all the loops of the tubes defining said chamber, becomes overheated and liable to explode.