EP0754922A1 - Gas-Kombi-Umluftbackofen - Google Patents

Gas-Kombi-Umluftbackofen Download PDF

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Publication number
EP0754922A1
EP0754922A1 EP95710014A EP95710014A EP0754922A1 EP 0754922 A1 EP0754922 A1 EP 0754922A1 EP 95710014 A EP95710014 A EP 95710014A EP 95710014 A EP95710014 A EP 95710014A EP 0754922 A1 EP0754922 A1 EP 0754922A1
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EP
European Patent Office
Prior art keywords
air
baking
oven
fan
hot air
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Granted
Application number
EP95710014A
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English (en)
French (fr)
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EP0754922B1 (de
Inventor
Egon Kulbach
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Definitions

  • the invention relates to a baking device, the type specified in the preamble of the claim.
  • ovens are currently used as convection ovens, in which several baking positions are set up in the actual baking room. So with the simple oven one baking layer and with the convection oven three to four baking layers, with appropriate hot air distribution below and above the individual baking layers.
  • the hot air is usually generated by gas burners, with a fan swirling the hot air generated in the actual baking chamber.
  • the problem here is the optimal, even distribution of hot air according to the individual baking layers.
  • the conventional convection ovens are only to be used as such and not as a normal oven with one or a maximum of two baking layers without recirculation in the baking chamber, with the exception of electrically heated ovens.
  • the invention has for its object to provide an oven device that can be operated with gas, while generating air in the oven itself and optimal hot air distribution according to the individual baking layers. Furthermore, the same oven device should also be used as a simple oven when the air circulation is switched off.
  • the invention is based on the idea of ensuring, through a special arrangement of air baffles (6, 7, 8, 10) in the baking chamber itself, an optimally targeted air flow (9, 11), according to which all baking layers (3) in the oven are uniform at all points be heated.
  • the air baffles (6, 10) are attached to the rear wall of the oven and to the top wall of the oven (7, 8), the hot air being generated by a gas tube burner (1) which is attached below the base plate (2).
  • the base plate (2) itself contains an air slot of approx. 1.5 cm on each side towards the side plates.
  • the hot air first penetrates into the oven, the hot air then being sucked in and swirled again by a fan (5) which is integrated in the rear air baffle (7, 10).
  • the hot air swirl happens in the the fan (5) draws in hot air and at the same time releases it again through the hot air openings (10), as a result of which a horizontal air flow is created (11), which builds up in layers to form the individual baking layers.
  • the fan (5) pushes the sucked-in air through a narrow opening into the chimney plate (7), which creates a suction effect in the chimney exhaust plate (7) and thus exhausts air through the chimney holes into the chimney without any significant loss of hot air heat arises.
  • the oven fulfills the function of a normal oven, without air circulation and thus reduced heating requirements for baking processes in one or at most two layers, so that the baking device can be used in an energy-saving manner depending on the baking requirements.
  • the opening cover (4) is attached in the front area of the oven device.
  • the air baffle with fan (5) and the air strainer (6) are attached in the rear area.
  • the chimney exhaust plate (7) is installed in the upper area of the oven, with a small opening to the fan room (12).
  • the chimney exhaust plate (7) contains inside the baking chamber Openings (8) through which the exhaust air penetrates outside the baking chamber.
  • the direction of the exhaust air flow is represented by the arrows (9) in which the exhaust air flows up the outer walls of the baking device and is then collected and discharged from the exhaust air openings (8).
  • the rear area of the baking chamber, on which the air baffle and fan (6, 5) are arranged, with the hot air openings (10) through which the hot air is swirled into the baking chamber are arranged on the outer edge of the air baffle (6).
  • the air flow of the hot air in the baking chamber (11) emerges from the hot air openings and is sucked in through the sieve in the air baffle in front of the fan (5, 6).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Incineration Of Waste (AREA)
  • Liquid Crystal Substances (AREA)
  • Cookers (AREA)
  • Treating Waste Gases (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Glass Compositions (AREA)
  • Catalysts (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Air Bags (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Die Erfindung bezieht sich auf eine Kombi-Backofenvorrichtung, bestehend aus Luftleitblechen, die im Backofenraum im Decken- und Rückwandbereich zugeordnet sind, versehen mit einem Ventilator, wobei das Luftleitblech im Deckenbereich auch bei Abschalten des Ventilators seine Wirkung entfaltet und danach die Backvorrichtung auch ohne Umlufterzeugung genutzt werden kann.

Description

  • Die Erfindung bezieht sich auf eine Backvorrichtung, der im Oberbegriff des Anspruches näher bezeichneten Art.
  • Im gewerblichen Großküchenbereich sowie im Haushaltsbereich werden derzeit Backöfen als Umluftbacköfen eingesetzt, bei denen in dem eigentlichen Backraum mehrere Backlagen eingerichtet sind. So bei dem einfachen Backofen eine Backlage und bei dem Umluftbackofen drei bis vier Backlagen, bei entsprechender Heißluftverteilung unterhalb und oberhalb der einzelnen Backlagen.
  • Dabei wird die Heißluft in der Regel durch Gasbrenner erzeugt, wobei ein Ventilator die so erzeugte Heißluft in dem eigentlichen Backraum verwirbelt. Problematisch hierbei ist die optimale gleichmäßige Heißluftverteilung entsprechend den einzelnen Backlagen.
  • Des weiteren sind die herkömmlichen Umluftbacköfen nur als solche einzusetzen und nicht als normaler Backofen mit einer oder maximal zwei Backlagen ohne Umlufterzeugung im Backraum, ausgenommen elektrisch beheizte Backöfen.
  • Der Erfindung liegt die Aufgabe zugrunde, eine Backofenvorrichtung zu schaffen, die mit Gas betrieben werden kann, bei gleichzeitiger Umlufterzeugung im Backofen selbst und optimaler Heißluftverteilung entsprechend der einzelnen Backlagen. Ferner soll die gleiche Backofenvorrichtung auch als einfacher Backofen genutzt werden, bei Ausschalten der Umlufterzeugung.
  • Derzeit sind keine Gas-Umluftbacköfen bekannt, die kombiniert genutzt werden können, sei es als Umluftbackofen oder als normaler Backofen bei optimaler Heißluftverteilung.
  • Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale der Ansprüche 1 bis 4 gelöst.
  • Die Erfindung beruht auf der Überlegung, durch eine spezielle Anordnung von Luftleitblechen (6, 7, 8, 10) im Backraum selbst eine optimal gezielte Luftströmung (9, 11) zu gewährleisten, wonach sämtliche Backlagen (3) in dem Backofen an jeder Stelle gleichmäßig beheizt werden. Die Luftleitbleche (6, 10) sind an der Backofenrückwand und an der Backofenkopfwand (7, 8) angebracht, wobei die Heißlufterzeugung durch einen Gasröhrenbrenner (1) geschieht, der unterhalb des Bodenbleches (2) angebracht ist. Das Bodenblech (2) selbst enthält zu den Seitenblechen hin einen Luftschlitz von ca. 1,5 cm auf jeder Seite.
  • Dadurch dringt die Heißluft zunächst in den Backofen, wobei die Heißluft dann durch einen Ventilator (5), der in das hintere Luftleitblech (7, 10) integriert ist, angesaugt und gleichzeitig wieder verwirbelt wird. Die Heißluftverwirbelung geschieht dadurch, in dem der Ventilator (5) Heißluft ansaugt und gleichzeitig durch die Heißluftöffnungen (10) wieder abgibt, wodurch eine horizontale Luftströmung entsteht (11), die sich schichtenweise zu den einzelnen Backlagen aufbaut. Gleichzeitig drückt der Ventilator (5) die angesaugte Luft durch eine schmale Öffnung in das Kaminblech (7), wodurch in dem Kaminabluftblech (7) eine Sogwirkung entsteht und somit Abluft durch die Kaminlöcher in den Kamin nach außen dringt, ohne daß hierdurch ein nennenswerter Heißluftwärmeverlust entsteht.
  • Durch Ausschalten des Ventilators (5) im hinteren Luftleitblech erfüllt der Backofen die Funktion eines normalen Backofens, ohne Umluftwirkung und damit vermindertem Heizbedarf bei Backvorgängen in einer oder maximal zwei Lagen, so daß die Backvorrichtung je nach Backbedarf energiesparend genutzt werden kann.
  • Die Erfindung wird anhand der Zeichnungen näher erläutert.
    • Es zeigt Figur 1:
  • Eine Seitenansicht des Backofenraumes, unten angebracht den Gasbrenner (1), darüber liegend das Bodenblech (2) und darüber im Backraum angeordnet die Backbleche (3) je nach Bedarf. Im vorderen Bereich der Backofenvorrichtung ist der Öffnungsdeckel (4) angebracht. Im hinteren Bereich ist das Luftleitblech mit Ventilator (5) und das Luftsieb (6) angebracht. Im oberen Bereich der Backofenvorrichtung ist das Kaminabluftblech (7) installiert, bei kleiner Öffnung zum Ventilatorenraum hin (12). Das Kaminabluftblech (7) enthält im inneren des Backraumes Öffnungen (8), durch die die Abluft außerhalb des Backraumes dringt. Die Abluftströumungsrichtung wird dargestellt anhand der Pfeile (9), in dem an den Außenwänden der Backvorrichtung die Abluft hochströmt und sodann von den Abluftöffnungen (8) aufgefangen und abgeführt wird.
    • Figur 2 zeigt:
  • Den hinteren Bereich des Backraumes, an dem das Luftleitblech nebst Ventilator (6, 5) angeordnet ist, wobei am äußeren Rand des Luftleitbleches (6) die Heißluftöffnungen (10) angeordnet sind, durch die die Heißluft in den Backraum verwirbelt wird.
    • Figur 3 zeigt:
  • Die Luftströmung der Heißluft im Backraum (11) austretend aus den Heißluftöffnungen und angesaugt durch das Sieb in dem Luftleitblech vor dem Ventilator (5, 6).

Claims (4)

  1. Mit Gas betriebene Backofenvorrichtung mit im Backraum angeordneten Luftleitblechen, den Luftleitblechen zugeordneter Ventilator und Abluftkamin.
  2. Anspruch 1 dadurch gekennzeichnet, daß das Luftleitblech im Deckenbereich der Backvorrichtung eine Sogwirkung auslöst in Verbindung mit dem Betrieb des Ventilators.
  3. Anspruch 1 dadurch gekennzeichnet, daß das Luftleitblech an der Rückwand der Backofenvorrichtung Heißluft durch zugeordnete Öffnungen im Backraum lagenweise verwirbelt.
  4. Anspruch 1 dadurch gekennzeichnet, daß das Luftleitblech im Dachbereich der Backvorrichtung auch ohne Ventilator eine Sogwirkung entwickelt.
EP95710014A 1995-07-17 1995-08-12 Gas-Kombi-Umluftbackofen Expired - Lifetime EP0754922B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29511535U DE29511535U1 (de) 1995-07-17 1995-07-17 Gas-Kombi-Umluftbackofen
DE29511535U 1995-07-17

Publications (2)

Publication Number Publication Date
EP0754922A1 true EP0754922A1 (de) 1997-01-22
EP0754922B1 EP0754922B1 (de) 2002-01-09

Family

ID=8010628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95710014A Expired - Lifetime EP0754922B1 (de) 1995-07-17 1995-08-12 Gas-Kombi-Umluftbackofen

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EP (1) EP0754922B1 (de)
AT (1) ATE211810T1 (de)
DE (2) DE29511535U1 (de)
DK (1) DK0754922T3 (de)
ES (1) ES2171180T3 (de)
PT (1) PT754922E (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59107121A (ja) * 1982-12-10 1984-06-21 Matsushita Electric Ind Co Ltd 加熱調理器
EP0115838A2 (de) * 1983-02-07 1984-08-15 FRANK Aktiengesellschaft Gasbetriebener Mehrfunktionsbackofen
JPH06144235A (ja) * 1992-11-11 1994-05-24 Amagasaki Kosakusho:Kk 板ガラスの移載装置
EP0608670A2 (de) * 1993-01-27 1994-08-03 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Gasbeheiztes Backrohr mit einem Hochleistungsgebläse

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511328A (en) * 1948-09-16 1950-06-13 Newark Stove Company Oven venting
US5038748A (en) * 1990-08-30 1991-08-13 General Electric Company Self-cleaning gas range having heat baffle assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59107121A (ja) * 1982-12-10 1984-06-21 Matsushita Electric Ind Co Ltd 加熱調理器
EP0115838A2 (de) * 1983-02-07 1984-08-15 FRANK Aktiengesellschaft Gasbetriebener Mehrfunktionsbackofen
JPH06144235A (ja) * 1992-11-11 1994-05-24 Amagasaki Kosakusho:Kk 板ガラスの移載装置
EP0608670A2 (de) * 1993-01-27 1994-08-03 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Gasbeheiztes Backrohr mit einem Hochleistungsgebläse

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 200 (M - 498)<2256> 12 June 1986 (1986-06-12) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 224 (M - 331)<1661> 13 October 1984 (1984-10-13) *

Also Published As

Publication number Publication date
DE29511535U1 (de) 1995-11-02
DE59509991D1 (de) 2002-02-14
ES2171180T3 (es) 2002-09-01
DK0754922T3 (da) 2002-04-22
ATE211810T1 (de) 2002-01-15
EP0754922B1 (de) 2002-01-09
PT754922E (pt) 2002-07-31

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