DE1009123B

DE1009123B - Traveling stove-oven system with separate pre-oven

Info

Publication number: DE1009123B
Application number: DEK18626A
Authority: DE
Inventors: Erich Klenk
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-06-30
Filing date: 1953-06-30
Publication date: 1957-05-29

Description

Bei der Ofenanlage nach dem Hauptpatent ist dem Hauptofenblock in völliger baulicher Trennung ein Vorbackofen vorgeschaltet, wie er zum Backen von sogenannten freigeschobenen Broten benötigt wird. Diesem Vorbackofen ist ein Backgutträger, z. B. ein Netzband, zugeordnet, dessen oberer Bandteil in drei Zonen aufgeteilt ist, und zwar eine oben offene Aufsetzzone, die geschlossene Vorbackzone und eine über dem Hauptofenband angeordnete Absetzzone mit absatzweise hin- und herbewegter Ablegezunge. Bei der Anlage nach dem Hauptpatent wird das Vorbackofennetzband jeweils verhältnismäßig schnell um eine der Vorbackofenlänge entsprechende Strecke weitergeschaltet, um danach während der gewünschten Vorbackzeit stehenzubleiben. Während dieser Vorbackzeit erfolgt dann auch das kurzzeitige Ablegen desjenigen Teigstücksatzes auf das Hauptofenband, der vorher dem Vorbackprozeß ausgesetzt war.In the furnace system according to the main patent, the main furnace block is in complete structural separation Pre-oven upstream, as it is required for baking so-called released bread. This prebake oven is a backing, z. B. a network tape, assigned, the upper part of the tape in three Zones is divided, namely an open top contact zone, the closed pre-baking zone and one above The settling zone arranged next to the main furnace belt with a stacking tongue that moves back and forth intermittently. In the System according to the main patent, the prebaking oven network belt is relatively fast by one The distance corresponding to the pre-baking oven length is switched forward to then during the desired pre-baking time to stand still. During this pre-baking time, it is then also put down for a short time Dough piece set onto the main oven belt that was previously exposed to the pre-baking process.

Eine derartige Steuerung der Bewegungen des Vorbackofennetzbandes hat erstens zur Voraussetzung, daß die drei genannten Zonen gleich lang sein müssen und daß zweitens im Vorbackofen auf seiner ganzen Länge an jeder Stelle die gleichen Temperatur- und Bedampfungsbedingungen erfüllt sind. Besonders die letztere Voraussetzung ist nur mit verhältnismäßig großem Aufwand an Investitionsmitteln ·— und dann auch nur schwer in idealer Weise — zu erfüllen. Je nach Anzahl und Lage der Brenner ergeben sich zum mindesten am Ofeneintritt und -austritt Unterschiede in der Beeinflussung der Teigstückreihen gegenüber denjenigen der Ofenmitte, wenn der Vorbackprozeß bei stillstehendem Vorbackofennetzband durchgeführt wird. Nicht immer gelingt es dann später, solche Unterschiede durch den Hauptbackprozeß wieder auszugleichen. Such a control of the movements of the pre-oven network belt Firstly, the prerequisite is that the three named zones must be of the same length and secondly that in the prebake oven the same temperature and temperature at every point along its entire length Conditions of vaporization are met. The latter requirement in particular is only proportionate large investment in investment funds - and then only with difficulty in an ideal way - to meet. Ever Depending on the number and position of the burners, there are at least differences at the furnace inlet and outlet in influencing the rows of dough pieces compared to those in the middle of the oven when the prebaking process is carried out with the pre-oven belt at a standstill. It is not always possible to do this later To compensate for differences caused by the main baking process.

Aus diesem Grunde soll im Zuge der Weiterentwicklung eines Vorbackofens gemäß dem Hauptpatent die Erfindung nunmehr darin bestehen, das Netzband des Vorbackofens so zu steuern, daß es abwechselnd langsam — mit auf Vorbackofenlänge und gewünschte Vorbackzeit abgestimmter Geschwindigkeit — eine Gesamtstrecke zurücklegt, die von der Aufsetzstelle bis kurz vor derjenigen Stelle reicht, in der sich die bekannte Umlenkrolle der Ablegezunge vor Ausführung der Absetz-Rückziehbewegung in Bereitschaft befindet, und danach kurzzeitig — mindestens während der Rückziehbewegung der erwähnten Umlenkrolle zwecks Absetzens der vorgebackenen Teigstücke auf das Hauptofenband — seine Laufgeschwindigkeit entweder erheblich vermindert oder sogar stillsteht. Mit der Verminderung der Laufgeschwindigkeit kann man sich notfalls dann begnügen, wenn man aus Gründen der Übersichtlichkeit die Teigstücke mit verhältnismäßig großen Abständen auf das Vorbackofen-Wanderherd - Backofen -Anlage
mit getrenntem VorbackofenFor this reason, in the course of the further development of a prebaking oven according to the main patent, the invention should now consist in controlling the mesh belt of the prebaking oven so that it alternately slowly - with a speed adjusted to the prebaking oven length and desired prebaking time - covers a total distance from the set-up point to just before the point in which the known deflection roller of the lay-down tongue is in readiness before execution of the depositing-retraction movement, and then briefly - at least during the withdrawal movement of the aforementioned deflection roller for the purpose of depositing the pre-baked dough pieces on the main oven belt - its running speed either significantly reduced or even stands still. If necessary, you can be satisfied with reducing the running speed if, for the sake of clarity, the dough pieces are placed on the prebaking oven-traveling stove-oven system with relatively large distances
with separate pre-oven

Zusatz zum Patent 964 221Addendum to patent 964 221

Anmelder:Applicant:

Erich Klenk,Erich Klenk,

Karlsruhe (Bad.), Sinner Str. 5Karlsruhe (Bad.), Sinner Str. 5

Erich Klenk, Karlsruhe (Bad.),
ist als Erfinder genannt wordenErich Klenk, Karlsruhe (Bad.),
has been named as the inventor

netzband aufgesetzt hat, so daß ein dichteres Zusammensetzen auf dem Hauptofenband angebracht ist. Wählt man von vornherein dichte Abstände, so muß das Vorbackofennetzband während der Rückziehbewegung der Endumlenkrolle der Ablegezunge stillstehen, damit die Teigstücke nicht aufeinander auf das Hauptband abgesetzt werden. Natürlich kann die Bewegungsunterbrechung der Wanderbewegung des Vorbackofennetzbandes auch noch die Zeit bis zur vollständigen Rückkehr der Umlenkrolle der Zunge in die Zungenstrecklage einschließen.has put on net tape, so that a denser assembly is attached to the main furnace belt. If close spacing is chosen from the outset, the pre-oven mesh belt must be used during the retraction movement the end pulley of the deposit tongue so that the dough pieces do not hit each other on the Main belt to be deposited. Of course, the interruption of the movement of the The pre-oven mesh belt also covers the time until the tongue's pulley returns Include in the extended tongue position.

Bei dieser Art des Vorbackofenbetriebes kann man , zwar die an den Ein- und Austrittsöffnungen auftretenden Wärmeverluste nicht vermeiden, man erreicht jedoch ein völlig gleichmäßiges Vorbacken der einzelnen Teigstücke, weil etwaige Beheizungs- und Bedampfungsunterschiede auf der Durchlaufstrecke durch den Vorbackofen jedem Teigstück gleichmäßig in gleicher Folge zuteil werden. Von der Türsteuerung gemäß dem Hauptpatent kann man hier ebenfalls kurzzeitig Gebrauch machen.With this type of pre-baking oven operation, you can, although those occurring at the inlet and outlet openings Do not avoid heat losses, but you can achieve a completely even pre-baking of the individual pieces of dough, because of any differences in heating and steaming on the passage Each piece of dough is distributed evenly in the same sequence through the pre-oven. From the door control in accordance with the main patent, use can also be made here for a short time.

Ein Ausführungsbeispiel einer Vorbackofen-Anlage gemäß der Zusatzerfindung ist in der Zeichnung dargestellt, in derAn embodiment of a pre-baking oven system according to the additional invention is shown in the drawing, in the

Fig. 1 einen schematischen Längsschnitt, ähnlich demjenigen durch eine Anlage nach dem Hauptpatent, undFig. 1 is a schematic longitudinal section, similar to that through a system according to the main patent, and

Fig. 2 einen dazugehörigen Grundriß zeigt.
Äußerlich weist die Vorbackofen-Anlage allenfalls gegenüber der Anlage nach dem Hauptpaterut den Unterschied auf, daß es einer so langen Aufsetzzone a nicht mehr bedarf, weil das Netzband 2 während des weitaus größten Teiles der Betriebszeit eine langsame Wanderbewegung durch den Vorbackraum 1, also die Vorbackzone b, und über die Absetzzone c hin ausführt. Die Absetzzone wird von der Ablegezunge 2'Fig. 2 shows an associated plan.
Externally, the prebaking oven system has at most the difference compared to the system after the main paterut that such a long touchdown zone a is no longer required because the mesh belt 2 moves slowly through the prebaking area 1, i.e. the prebaking zone, during the vast majority of the operating time b, and over the settling zone c . The deposition zone is controlled by the deposition tongue 2 '

709 546/1709 546/1

Claims

formed, which is located across the main furnace network belt 3 in the embodiment. The arrangement of the belt systems of the pre-baking oven and the main oven could also be made so that both are in alignment. From the position shown in Fig. 1 on releasing position A the net band 2 moves each with the given by Vorbackofenlänge and desired Vorbackzeit speed slowly up to the point C (see. Fig. 1) just before the end position of the guide roller 10 of the depositing tongue 2 ' be ίο finds. Since dough pieces were continuously placed in front of the oven during the running time of the net belt 2, there are pre-baked dough pieces evenly distributed over the entire settling zone c on the depositing tongue 2 at the point in time at which the first row of dough pieces placed reaches point C. It is now possible to set down the whole lying on the deposit tongue 2 '. Start of dough piece set on the main oven net belt 3, for which, depending on the retraction speed of the end pulley 10, either a slowing down of the speed of the net belt 2 or its complete standstill is required. When the set of dough pieces has been placed on the main oven belt 3, the deflection roller 10 immediately returns from the retracted position designated by 10 'into the extended position of the tongue. Even during this stretching movement, the pre-baking oven network belt can resume its wandering movement described at the beginning. But you can also move back the point in time at which the old speed was resumed until the deflection roller 10 has stretched the lay-down tongue 2 'again (see FIG. 1 on the right).

A separate drive device with a timer-controlled motor 5 on a chassis 7 which also supports the deflection roller 10 and which is able to move on the rack guide T by means of a pinion is also used here for tongue movement. Here, too, reversing switches are required to reverse the movement at the ends of the stroke, while the motor 5 is switched off by the timer.

The grinding device 8 required to compensate for the length of the belt during the tongue movement is in place constantly under the action of a z. B. with a weight 8 'provided pulling device.

The mesh belt 2 is driven by a motor 4 via a transmission. The moving times are determined by a time switch that can be set for all operating conditions. By doing Netzban'd gear is also a control disk 11, which in the idle times of the belt 2 for the Closing the doors 6, 6 'of the pre-baking oven ensures and opens them again before the start of movement.

At the heating and steaming system is only essential that the furnace inlet and outlet - z. B. by appropriate arrangement of steaming nozzles 14 - restricted zones are created, which the Keep heat losses low at these points. The steam generator 12 is in a serpentine shape as a jacket arranged around the fuel gas discharge nozzle 13.

The designs of the steaming and moving devices are of course for the inventive Pre-oven system not mandatory. You can go through any identical or similar-looking known device are replaced.

The speed of the main furnace belt 3 must in this respect correspond to the time interval between two settling processes be adapted than in the meantime the main furnace belt 3 in the exact connection its area already occupied with dough pieces a free area under the lifting area of the depositing tongue 2 ' must be brought.

Pat κ ν τ λ .vs

Traveling stove-oven system with a pre-baking oven that is structurally separate from the oven block of the main oven for baking so-called loosened breads with the baking oven running through the baked goods carrier, e.g. B. a mesh belt, the upper part of the belt is divided into three zones, namely an open-top landing zone, the closed prebaking zone and a settling zone arranged above the main oven belt with depositing tongue moving back and forth according to patent 964 221, characterized by such a control of the prebaking oven network belt operation that the net belt (2) alternately slowly - with a speed adjusted to the length of the prebaking oven and the desired prebaking time - runs through a total distance (w) that runs from the placement point (A) to point (C) shortly before the in the ready position for placing on the Main oven belt (3) located deflection roller (10) of the deposit tongue (2 ') of the pre-oven network belt (2) is enough, and then at least during the retraction movement of the deflection roller (10) of the deposit tongue (2') for the purpose of depositing the pre-baked dough pieces on the main oven belt (3) briefly its running speed is significantly reduced or comes to a standstill.

1 sheet of drawings