Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1980-12-20
1982-12-14
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
99386, 99443C, 219354, 219411, 432 49, F27B 906
Patent
active
043639550
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates generally to and has essentially for its object a tunnel-type oven for post-baking or heating various products, in particular food products, and which is more especially intended for final baking and browning bakery bread.
PRIOR ART
There are already known in the prior art a rather great number of tunnel-type ovens for post-baking and browning bread loaves. The bread loaves or other bakery products are therefore pre-baked by the bread maker and are thereafter delivered in that condition to the retailers, who may keep them a few hours before subjecting them to final baking and browning before selling them to customers.
Such ovens generally include a chamber open at both its ends, a conveyor most often of the roller-type passing through the chamber and intended to support the bread loaves, and heating means most often of the infrared radiation type placed within the chamber above the conveyor and the products the baking of which is to be completed or which require warming up.
However, although operating almost satisfactorily, such ovens suffer from drawbacks. They often are large-sized, their mechanical structure is heavy, the use of a roller conveyor does not allow accurate positioning of the products to be baked or warmed up, and so forth.
STATEMENT OF THE INVENTION
The purpose of the invention is to obviate the drawbacks of the known ovens of the above type, and provides to this end an oven for post-baking or heating various products, in particular for browning bread, comprising a chamber open at both its ends and traversed by a conveyor carrying the products, and heating means, in particular infrared heating means, provided in the chamber. According to one feature of the invention the conveyor is of the type with wide meshes or multiple openings allowing the passage, in particular, of radiations, and in that said heating means are provided above and below the conveyor portion carrying the said products.
This feature of the invention allows the products to be heated simultaneously from above and from below, whereas in the case of a roller conveyor it is impossible to heat the products from below.
According to another feature of the invention, the heating means comprise a first series of infrared radiation emitting tubes arranged above the conveyor, and a second series of infrared radiation emitting tubes placed under the conveyor portion carrying the products, each of the said two series of tubes being associated with independent power-regulating means.
It is thus possible to regulate at will the heating power of the upper tubes and that the lower tubes, so that the operation of the oven can be adapted for various products, or to products of a same type slightly differing from one another.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and other purposes, characterizing features, details and advantages thereof will appear more clearly as the following explanatory description proceeds with reference to the appended diagrammatic drawings given solely by way of example illustrating one form of embodiment of the invention and wherein:
FIG. 1 is a diagrammatic side-view of an oven according to the invention;
FIG. 2 is a top view of the oven shown in FIG. 1; and
FIG. 3 is a diagrammatic sectional view upon the line III--III of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the drawings is illustrated one preferred form of embodiment of a tunnel-type oven according to the invention, intended more particularly for post-baking and browning bakery bread.
In a conventional manner, the oven 10 comprises a frame or body 11 the upper and lower portions of which define between themselves a chamber 12 open at both its longitudinal ends, and which is traversed by a conveyor 13.
According to the invention, the conveyor 13 is of the endless belt of band type constituted by a metal mesh structure, lattice or netting 14 with wide articulated meshes, supported by transverse bars or rods 15 simply passed through appropriate meshes of the netting
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Frechou epouse Gauthier Raymonde J. B.
Gauthier Robert H.
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