DE79137C - Top and bottom firing oven - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 2: Bakery.

C. TH, SEIDEL in DRESDEN. Upper and lower fire - B ack ο fe n.

Patented in the German Empire on June 28, 1894.

In patent no. 70099 there is a top and bottom firing oven with only one firing described and illustrated.

The experiments made with the furnace have shown that the furnace is perfected thereby it can be ensured that the fire gases that have passed over the baking chamber are not immediately carried upwards as in that patent, but first down again, under the baking chamber in lying to one side Channels are routed forward, thus being fed by only one source Under and over firing the latter becomes the main firing to an increased extent.

It is thereby both the upper and the bottom heat is also used significantly more.

As in patent no. 70099, the new construction also enables two on top of each other To be able to heat arranged baking rooms by means of a furnace, only with the present one Oven also opposite the guidance of the heating ducts surrounding the second baking chamber the one in that patent is essentially different. Both baking rooms can also be used at the same time Time heat and go here 'both with simultaneous heating of both baking rooms as well with separate, d. H. heating the upper baking chamber alone, the hot gases always come first in channels across the baking chamber and down from there, around in channels under the baking chamber to the front and then to the right and to be fed to the chimney on the left.

In the attached drawings, the furnace is provided with two superimposed baking chambers in Fig. Ι in longitudinal section according to line AB of Fig. 3, in Fig. 2 in cross-section, left to line CD, the right to the line EF of Fig. 1, Fig. 3 in horizontal section, left to line LM, right to line N-O of FIG. 1 and finally in FIG. 4 in horizontal section, left to line GH, right to line JK of FIG.

The fire starts from the grate α in the two central channels bb from front to back, turns around here and goes back to the front in channels cc to pass through the ascending channels dd , which can be closed by slide ^ ¹ d ¹ To reach the oven f. Here the heat is distributed in the upper ducts e, in order to go down again ^{at the rear end of the baking chamber through the sloping ducts e 1} and to the front in ^{the ducts c 1} c ^{1 below the baking chamber.} The channels c ¹ open at the front into the ascending channels uu, which can be regulated by slider u ¹ u ^l , which direct the fire gases to the chimney if only one oven is arranged, while the fire gases, if a second oven is also arranged, as indicated in the drawing is to lead over this baking chamber. Here the fire gases are distributed in the upper draft ducts , go backwards in them, then sweep downwards in the lower draft ducts m forward and from here finally through the ducts u ² and ² to the chimney, which can be regulated by slide valves u ^B u ³ to be directed.

Due to the return of the fire gases through the channels c ¹ c ^l to the front, there is on the one hand an increased utilization of the heat and consequently a more appropriate heat transfer to the baking chamber f, as well as a

lower consumption of firing material is achieved, while other parts the simultaneous one complete heating of both baking rooms is made possible.

The channels b and c can be closed off from one another at the rear end by slide A: ¹ , while in the front part they are connected to one another by a free opening k. Furthermore, the channels d are connected directly to the discharge channels u through openings which can be closed by means of slide d ² , so that the fire after the slide k ^{1 has been closed} and the slide d ^{1 opened} from the grate α through the openings k directly into the channels d and from them reaches the channels e , so only top heat is generated for the baking chamber f , while if the sliders A: ¹ and d ^{2 are} opened, but the sliders d ^{1 are} closed, the baking chamber / only receives bottom heat.

If one closes the slides k ¹ and d ¹ and opens the slides d ² , the fire moves from the grate a directly through the channels u over the baking chamber f ¹ and heats it in the most advantageous way, since it first goes over it from the front to the back This way, because the heat is used to a greater extent by subsequently pulling it out under the oven. The baking chamber f ¹ is then heated by itself.

Separate heating of the upper and lower heat is not required for the upper baking chamber f ¹ , since experience shows that the same is completely heated by the specified device.

By connecting now even, κ through slide ⁴ abschliefsbar, the two channels u and u ² in the right direction indicated in Fig. 2 way, one can by Reasoning the slide u ¹ and d ² and open the slide u ³ and w ⁴ also heat the lower baking chamber f by itself, which is particularly necessary when the draft in the chimney is impaired by the effects of the weather.

Claims (2)

Patent Claims: ι. An oven with top and bottom firing, in which the flue gases, after they have coated the baking chamber (f) from below and above as in Patent No. 70099, are again directed downwards and then to the side under the baking chamber to the front, to then pass over to the chimney or to heat a second baking chamber (f ^l ) in its heating ducts, the baking chamber (f) being fed with lower and upper heat simultaneously or separately by means of the corresponding position of sliders (k ¹ d ¹ and d ² ) can. 2. In the case of an oven of the type identified under 1. with a second oven (f ¹ ) , the arrangement of channels (u) which can be regulated by slides (u ¹ J ) on the fireplace side of the oven in such a way that either the lower oven (f) or the flue gases directed from the grate (α) through the free openings (k) and the openings that can be closed by slides (d ² ) into channels (u) first pass through the upper baking chamber (f ¹ ) in order to then enter its upper pull channels (ή) to the rear, then through its lower pull channels (m) to the front and finally into controllable extraction channels (U ² J ). 1 sheet of drawings.