DE2657302A1 - OVEN - Google Patents

Description

PATENT LAWYERS

dr. ε. wiegand dipl-ing. w. nobody

dr. M. Koehler dipl-ing. c. Gernhardt 265/0 u z

MÖNCHEN HAMBURG

TELEPHONE: 55547 «8000 M 0 N C H E N 2,

TELEGRAM CARPATENT. MATHILDENSTRASSE 12 TELEX: 5 29 068 KARP D, ^

December 17, 1976

W. 42 722/76 7 / gr

Jonan Henri Antonius Maria Brunklaus

Linne (Netherlands) Pranciscus Hubertus Willaert

Gem.Oploo (Netherlands) Bakovenbouw H. Becker B. V., Eoermond (Netherlands)

oven

* "" · -The invention. Refers * -to-an oven with Heating of the baking chamber by means of self-contained, partially closed pipes filled with water.

Ovens, their floors and hoods or ceilings by means of ring-shaped ears, which are partially filled with water, are heated by placing the lower part of these ears in places .heated, creating steam "which then rises and, after the condensation heat has been released into the baking rooms, again when water flows back to the lower part of the Eohre are known.

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For ovens with a relatively small width, which "To be heated in this way, the lower, horizontally extending parts are those arranged in vertical surfaces Short pipes so that the "heated area only" is limited.

The object of the invention is to create an oven of the type described, which has an enlarged heated surface and in which the heat content of the heating gases is used as well as possible.

This object is achieved according to the invention by an oven with heating of the baking chamber by means of self-contained pipes, some of which are filled with water through an upward or upwardly running chimney duct for the heating gases, which is connected to one connects horizontally extending channel on the underside and from which a channel wall through upward leading up running branches of the tightly fitting pipe rings is formed.

In the oven according to the invention, the exhaust gases, after they have coated the said lower pipe parts, guided upwards at an angle through a channel and allowed to flow along the vertical pipe parts, so that the heated Area becomes significantly larger.

In this channel, steam generators can also be used to deliver the steam that is often required for the baking process. to be ordered.

In order to achieve intensive heating of all baking rooms, according to the invention, the ring pipes are firmly attached to one another, and the available area of the lower pipe

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use parts as optimally as possible for heat transfer, these pipe parts are arranged in at least two levels at different heights, so that the hot gases around them can flow around.

Such a furnace is according to the invention as a relative short tunnel furnace executed, which is not in several vertically arranged one above the other, by sheet metal from each other separate baking rooms, which each have a baking base, is divided, but by the horizontal intermediate pipes vertically arranged single tubes form the delimitation of the various baking layers and in which the baked goods, which are are on the wings of a transport trolley, are pushed into the oven together with this trolley.

The invention is explained in more detail below with reference to the drawing, for example.

Fig. 1 shows a cross section through the width of the furnace with ring heating,

Pig. Figure 2 shows a cross section "through the depth of the furnace with ring heating according to the line A-B of Fig. 1 and

Fig. 3 illustrates a transport and baking trolley, which "is used in the furnace according to FIGS.

Ring tubes are arranged in the casing 1 of the furnace, have the vertical pipe parts 2, which me several horizontal Pipe parts 3 and on the lower edge of the furnace with a section with inclined pipe parts 4, which is directly heated, connected are. These ring tubes are arranged firmly against one another, as can be seen from FIG. Together with the rear wall 12 and the door frame 13, the ring tubes form a tunnel, which can be completed by means of the insulated door 14 at the front.

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Around the area of the pipe parts swept by the "exhaust gases" 4 · To make them as large as possible, these parts of the ear are alternated arranged at different heights, so that the entire circumference of these pipes is washed by the hot gases.

Several burners 6 are located on a gas distribution pipe 5 attached, and the entire row of tubes 4 is heated by the hot gases which pull through the space 7, and although in a direction which runs parallel to the position of the pipe parts 4.

If the flames of the gas burner are horizontal, the height of the stove can be less than if the flames Blow vertically against the pipe parts 4-. It goes without saying it is also possible to use one or more oil burners instead of gas burners.

At the end of the room 7, the gases in Winkel.zu one diverted shallow, vertical channel 6, one wall of which is formed by the row of tubes 2 on one side of the tube rings will.

As a result, the hot gases heat on their way to the discharge channel 11, except for all of the pipe parts 4- all pipe parts 2 on one side of the pipe rings.

Steam generators 9 can be arranged in channel 8, so that part of the heat content of the gases is also used to generate steam, which is required for the baking process before the gases reach the chimney. In order to achieve the greatest possible heat transfer to these generators, the hot gases are diverted through baffles 10.

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• The relatively short furnace tunnel is made through the pipe layers or pipe groups 3 divided into different rooms - 8 rooms in the drawing. To be able to hack in these rooms and to enable fast loading and unloading, a trolley is pushed into the furnace tunnel. This car exists from a support frame 18 with wheels 19 and a vertical one Frame 16 to which arms 15 are attached.

The arms 15 extend just above the pipe layers 3 and on these arms is either immediate or The baked goods are placed on loose trays or sticks.

Plates 17 are arranged on the vertical frame 16.

These sheets serve as a radiation shield, through which the Release of radiant heat from the interior of the furnace against the furnace door 14 is reduced to almost half. TJm also to reduce the heat transfer by convection to this door, the sheets 17 on the inside of the Furnace facing side are covered with an insulation layer. The cart can be loaded and unloaded outside the furnace and pushed into the oven via rails 20.

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Claims (7)

Pat ent calls Oven with heating of the baking space by means of self-contained pipes, some of which are filled with water through a chimney duct (8) leading upwards for the heating gases, which is connected to one on the underside horizontally extending channel (7) connects and one of the channel wall by upwardly leading branches of the firmly to one another adjacent pipe rings is formed. 2. Oven according to claim 1, characterized in that the pipe rings have a tunnel divided into several baking rooms form, in which the baked goods are brought close to the horizontal pipe layers (3) by the arms (15) of a trolley can be. 3. Oven according to claim 1 or 2, characterized in that the lower pipe parts (4-) of the tightly abutting one another Tube rings are located alternately at different heights. 4-. Oven according to one of Claims 1 to 3i characterized in that the hot gases' · after they have coated the lower pipe parts (4) of the pipe rings, in vertical Direction to be guided along the vertical parts of the pipe rings. 5. Oven according to one of claims 1 to 4, characterized characterized in that the hot gases on their perpendicular path to the chimney (11) one or more steam generators (9) heat up. 6. Oven according to one of claims 1 to 5 * thereby characterized in that the Piaamen of a gas or oil burner (6) Blow out horizontally in the direction of the lower parts (A-) of the ring pipes. 7 0 9 8 2 6/0330 ori «, _nal inspected - Y- 7. Oven according to one of claims 1 to 6, characterized characterized in that the transport carriage is provided with a vertical radiation shield (17) directed towards the furnace door (14-) which is clad on the other side with a heat-insulating layer ". 709826/0330