EP0670457A2 - Electric baking and roasting oven - Google Patents

Electric baking and roasting oven Download PDF

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Publication number
EP0670457A2
EP0670457A2 EP94117130A EP94117130A EP0670457A2 EP 0670457 A2 EP0670457 A2 EP 0670457A2 EP 94117130 A EP94117130 A EP 94117130A EP 94117130 A EP94117130 A EP 94117130A EP 0670457 A2 EP0670457 A2 EP 0670457A2
Authority
EP
European Patent Office
Prior art keywords
air
cooking chamber
opposite
circulation fan
roasting oven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94117130A
Other languages
German (de)
French (fr)
Other versions
EP0670457A3 (en
Inventor
Georg Dipl.-Ing. Schwalme
Richard Ing. Turek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Hausgeraete GmbH
Original Assignee
AEG Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP0670457A2 publication Critical patent/EP0670457A2/en
Publication of EP0670457A3 publication Critical patent/EP0670457A3/en
Withdrawn legal-status Critical Current

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    • 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 an electric baking and roasting oven according to the preamble of claims 1 and 2 respectively.
  • the invention now seeks to remedy this.
  • the invention has for its object to provide a baking and roasting oven with a forced air fan, in which the circulated air conveyed into the cooking space is guided so that at Multi-day operation in the cooking space all food carriers are evenly exposed to heat.
  • an effective circulation of the circulating air is achieved in the cooking chamber, the circulating air being blown in a targeted manner in the lower half of the cooking chamber via the food carriers inserted in this area and the circulating air being directed specifically in the upper unloaded half of the cooking chamber Recirculating air blower is returned through the upper radiator while heating.
  • the oven muffle 1 shown schematically in the drawing for an electric baking and roasting oven has in the upper region of the cooking space 2 near its ceiling 3 a heater 4 for the top heat and a heater 6 for the bottom heat located below the oven muffle bottom 5.
  • the cooking space 2 which can be closed at the front by a door 7, has on its side walls a plurality of guides arranged one above the other for baking trays 8, 9, 10 or other food items to be inserted into the cooking space.
  • the rear end of the cooking space 2 forms an air guide plate 11, behind which an air blower 12 is located.
  • the circulating air blower 12 is accommodated in a pocket-like formation 13 in the rear wall of the furnace muffle.
  • a central suction opening 14 is in the air guide plate 11 provided for the circulating air blower 12 arranged behind it.
  • the air guide plate 11 has a plurality of blow-out openings 15, which are arranged in the region below the suction opening 14.
  • the air duct in the cooking space 2 is indicated by arrows.
  • the suction opening 14 is provided in the upper area or in the upper half of the air guide plate 11, while the exhaust openings 15 are only in the lower area ( Half) of the air guide plate 11 are located, ie that the outlet opening 14 is above and the blow-out openings 15 below the horizontal plane of symmetry of the cooking space 2.
  • the circulating air conveyed into the cooking chamber 2 by the circulating air blower 12 receives a horizontal flow direction directed towards the cooking chamber door 7.
  • blow-out openings 15 in the air guide plate 11 is expediently such that they lie approximately at the level of the lateral cooking space wall guides for the food carriers 8, 9.
  • the circulating air flow is conveyed below the food supports 8, 9 and thus between two food supports 8, 9 and 9, 10 pushed in one above the other, in a flow channel formed there.

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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)

Abstract

The blower openings (15) are arranged in the lower region of the air guidance plate (11) and the central extraction opening (14) is arranged in the upper region. The air distribution in the food area (2) is so arranged that the environmental air delivered through the blower openings into the food area has a horizontal flow direction which is aligned with the oven door (7). The air flow in the counter direction is guided back below the upper heating element (4) to the extraction opening.

Description

Die Erfindung betrifft einen elektrischen Back- und Bratofen nach dem Oberbegriff der Patentansprüche 1 bzw. 2.2. The invention relates to an electric baking and roasting oven according to the preamble of claims 1 and 2 respectively.

Bei derartigen Back- und Bratöfen mit einem rückwärtigen Umluftgebläse ist es bekannt, die Ansaugöffnung im Luftführungsblech und das Umluftgebläse etwas oberhalb der horizontalen Symmetrieebene vorzusehen. Die Luft-Ausblasöffnungen im Luftführungsblech sind seitlich neben der zentralen Ansaugöffnung angeordnet. Es hat sich nun gezeigt, daß bei Mehretagenbetrieb, d.h. der Garraum ist mit mindestens zwei übereinander eingeschobenen Gargutträger beschickt, die Wärmeverteilung im Garraum bei solchen Back- und Bratöfen für ein einwandfreies Garen bzw. Backen unzureichend ist. Dies wirkt sich bei Mehretagenbetrieb in der Weise aus, daß das Gar- bzw. Backgut auf den einzelnen Gargutträgern während einer bestimmten Zeitdauer einen voneinander abweichenden Gar- bzw. Backzustand erreicht, so daß eine gleichzeitige Entnahme sämtlicher Gargutträger (z.B. Backbleche mit Kleingebäck) nicht möglich ist.In such baking and roasting ovens with a rear air circulation fan, it is known to provide the suction opening in the air guide plate and the air circulation fan somewhat above the horizontal plane of symmetry. The air outlet openings in the air guide plate are arranged on the side next to the central suction opening. It has now been shown that with multi-day operation, i.e. the cooking space is loaded with at least two food carriers inserted one above the other, the heat distribution in the cooking space in such baking and roasting ovens is insufficient for proper cooking or baking. In multi-day operation, this has the effect that the items to be cooked or baked on the individual items to be cooked reach a different cooking or baking state for a certain period of time, so that simultaneous removal of all items to be cooked (e.g. baking trays with small baked goods) is not possible is.

Hier will die Erfindung nun Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, einen Back- und Bratofen mit Umluftgebläse zu schaffen, bei dem die in den Garraum geförderte Umluft so geführt wird, daß bei Mehretagenbetrieb im Garraum sämtliche Gargutträger gleichmäßig der Wärmebeaufschlagung ausgesetzt sind.The invention now seeks to remedy this. The invention has for its object to provide a baking and roasting oven with a forced air fan, in which the circulated air conveyed into the cooking space is guided so that at Multi-day operation in the cooking space all food carriers are evenly exposed to heat.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 oder 2 zu entnehmen.
Eine vorteilhafte weitere Ausbildung des Gegenstandes nach der Erfindung ist im Anspruch 3 angegeben.The solution to this problem according to the invention can be found in the characterizing part of patent claim 1 or 2.
An advantageous further embodiment of the object according to the invention is specified in claim 3.

Bei dem Back- und Bratofen nach der Erfindung wird im Garraum ein wirkungsvoller Kreislauf der Umluft erreicht, wobei in der unteren Hälfte des Garraums die Umluft gezielt über die in diesem Bereich eingeschobenen Gargutträger geblasen wird und in der oberen unbeschickten Hälfte des Garraums die Umluft gezielt zum Umluftgebläse bei gleichzeitiger Erwärmung durch den oberen Heizkörper zurückgeführt wird.In the baking and roasting oven according to the invention, an effective circulation of the circulating air is achieved in the cooking chamber, the circulating air being blown in a targeted manner in the lower half of the cooking chamber via the food carriers inserted in this area and the circulating air being directed specifically in the upper unloaded half of the cooking chamber Recirculating air blower is returned through the upper radiator while heating.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand dieser nachfolgend näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below with reference to this.

Die in der Zeichnung schematisch dargestellte Ofenmuffel 1 für einen elektrischen Back-und Bratofen hat im oberen Bereich des Garraumes 2 in der Nähe von dessen Decke 3 einen Heizkörper 4 für die Oberhitze und einen unterhalb des Ofenmuffelbodens 5 befindlichen Heizkörpers 6 für die Unterhitze. Der frontseitig durch eine Tür 7 verschließbare Garraum 2 weist an seinen seitlichen Wänden mehrere übereinander angeordnete Führungen für in den Garraum einschiebbare Backbleche 8,9,10 oder andere Gargutträger auf. Den rückwärtigen Abschluß des Garraumes 2 bildet ein Luftführungsblech 11, hinter dem sich ein Umluftgebläse 12 befindet. Das Umluftgebläse 12 ist in einer taschenartigen Ausformung 13 in der Ofenmuffelrückwandung untergebracht. Im Luftführungsblech 11 ist eine zentrale Ansaugöffnung 14 für das dahinter angeordnete Umluftgebläse 12 vorgesehen. Desweiteren hat das Luftführungsblech 11 mehrere Ausblasöffnungen 15, die in dem Bereich unterhalb der Ansaugöffnung 14 angeordnet sind. Die Luftführung im Garraum 2 ist durch Pfeile gekennzeichnet.The oven muffle 1 shown schematically in the drawing for an electric baking and roasting oven has in the upper region of the cooking space 2 near its ceiling 3 a heater 4 for the top heat and a heater 6 for the bottom heat located below the oven muffle bottom 5. The cooking space 2, which can be closed at the front by a door 7, has on its side walls a plurality of guides arranged one above the other for baking trays 8, 9, 10 or other food items to be inserted into the cooking space. The rear end of the cooking space 2 forms an air guide plate 11, behind which an air blower 12 is located. The circulating air blower 12 is accommodated in a pocket-like formation 13 in the rear wall of the furnace muffle. A central suction opening 14 is in the air guide plate 11 provided for the circulating air blower 12 arranged behind it. Furthermore, the air guide plate 11 has a plurality of blow-out openings 15, which are arranged in the region below the suction opening 14. The air duct in the cooking space 2 is indicated by arrows.

Um nun im Garraum 2 einen wirkungsvollen Luftkreislauf der Umluft zu errreichen und damit in allen Beschickungsetagen gute Garergebnisse zu erzielen, ist die Ansaugöffnung 14 im oberen Bereich bzw. in der oberen Hälfte des Luftführungsbleches 11 vorgesehen, während sich die Ausblasöffnungen 15 ausschließlich im unteren Bereich (Hälfte) des Luftführungsbleches 11 befinden, d.h. daß die Ausgangsöffnung 14 oberhalb und die Ausblasöffnungen 15 unterhalb der horizontalen Symmetrieebene des Garraumes 2 angeordnet ist bzw. sind. Dadurch erhält die in den Garraum 2 durch das Umluftgebläse 12 geförderte Umluft einen zur Garraum-Tür 7 gerichtete horizontale Strömungsrichtung. Nach Auftreffen des Umluftstromes an der Türinnenfläche wird dieser nach oben umgelenkt und wird in Gegenrichtung unterhalb des oberen Heizkörpers 4 zur Ansaugöffnung 14 im Luftführungsblech 11 und damit zum Umluftgebläse 12 zurückgeführt. Die Anordnung der Ausblasöffnungen 15 im Luftführungsblech 11 ist zweckmäßig so getroffen, daß diese etwa in Höhe der seitlichen Garraumwand-Führungen für die Gargutträger 8,9 liegen. Dadurch wird der Umluftstrom unterhalb der Gargutträger 8,9 und damit zwischen zwei übereinander eingeschobener Gargutträger 8,9 bzw. 9,10 in einer Art dort gebildeten Strömungskanal hindurchgefördert.In order to achieve an effective air circulation of the circulating air in the cooking space 2 and thus to achieve good cooking results on all loading levels, the suction opening 14 is provided in the upper area or in the upper half of the air guide plate 11, while the exhaust openings 15 are only in the lower area ( Half) of the air guide plate 11 are located, ie that the outlet opening 14 is above and the blow-out openings 15 below the horizontal plane of symmetry of the cooking space 2. As a result, the circulating air conveyed into the cooking chamber 2 by the circulating air blower 12 receives a horizontal flow direction directed towards the cooking chamber door 7. After impingement of the circulating air flow on the inside surface of the door, it is deflected upward and is returned in the opposite direction below the upper radiator 4 to the suction opening 14 in the air guide plate 11 and thus to the circulating air blower 12. The arrangement of the blow-out openings 15 in the air guide plate 11 is expediently such that they lie approximately at the level of the lateral cooking space wall guides for the food carriers 8, 9. As a result, the circulating air flow is conveyed below the food supports 8, 9 and thus between two food supports 8, 9 and 9, 10 pushed in one above the other, in a flow channel formed there.

Claims (3)

Elektrischer Back- und Bratofen mit einem durch eine Tür verschließbaren Garraum für Mehretagenbetrieb, der mit einem oberen und einem unteren Heizkörper für die Ober- und die Unterhitze sowie mit einem rückwärtigen Umluftgebläse ausgerüstet ist, wobei das Umluftgebläse gegenüber dem Garraum durch ein Luftführungsblech mit einer gegenüberliegenden Ansaugöffnung sowie mehreren Ausblasöffnungen abgedeckt ist, dadurch gekennzeichnet, daß die Ausblasöffnungen (15) im unteren Bereich und die Ansaugöffnung (14) im oberen Bereich des Luftleitbleches (11) angeordnet sind und die Luftverteilung im Garraum (2) so getroffen ist, daß die durch die Ausblasöffnungen (15) in den Garraum (2) geförderte Umluft eine zur Garraum-Tür (7) gerichtete horizontale Strömungsrichtung erhält und der Luftstrom in Gegenrichtung unterhalb des oberen Heizkörpers (4) zur Ansaugöffnung (14) zurückgeführt wird.Electric baking and roasting oven with a cooking chamber that can be closed by a door for multi-day operation, which is equipped with an upper and a lower heating element for the top and bottom heat as well as with a rear air circulation fan, the air circulation fan opposite the cooking chamber through an air duct plate with an opposite one Suction opening and several outlet openings is covered, characterized in that the outlet openings (15) are arranged in the lower region and the inlet opening (14) in the upper region of the air baffle (11) and the air distribution in the cooking chamber (2) is such that the through the blow-out openings (15) into the cooking chamber (2) conveyed circulating air receives a horizontal flow direction directed towards the cooking chamber door (7) and the air flow in the opposite direction below the upper heating element (4) is returned to the suction opening (14). Elektrischer Back- und Bratofen mit einem durch eine Tür verschließbaren Garraum für Mehretagenbetrieb, der mit einem oberen und einem unteren Heizkörper für die Ober- und die Unterhitze sowie mit einem rückwärtigen Umluftgebläse ausgerüstet ist, wobei das Umluftgebläse gegenüber dem Garraum durch ein Luftführungsblech mit einer gegenüberliegenden Ansaugöffnung sowie mehreren Ausblasöffnungen abgedeckt ist, dadurch gekennzeichnet, daß die Ansaugöffnung (14) oberhalb und die Ausblasöffnungen (15) unterhalb der horizontalen Symmetrieebene des Garraumes (2) angeordnet ist bzw. sind.Electric baking and roasting oven with a cooking chamber that can be closed by a door for multi-day operation, which is equipped with an upper and a lower heating element for the top and bottom heat as well as with a rear air circulation fan, the air circulation fan opposite the cooking chamber through an air duct plate with an opposite one Intake opening and several outlet openings is covered, characterized in that the suction opening (14) is or are arranged above and the outlet openings (15) below the horizontal plane of symmetry of the cooking space (2). Back- und Bratofen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ausblasöffnung (15) im Luftführungsblech (11) etwa in Höhe der Führungen für die Gargutträger (8,9) angeordnet sind.Baking and roasting oven according to claim 1 or 2, characterized in that the blow-out opening (15) in the air guide plate (11) is arranged approximately at the level of the guides for the food supports (8, 9).
EP94117130A 1994-02-25 1994-10-29 Electric baking and roasting oven. Withdrawn EP0670457A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4406155 1994-02-25
DE19944406155 DE4406155A1 (en) 1994-02-25 1994-02-25 Electric baking and roasting oven

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EP0670457A2 true EP0670457A2 (en) 1995-09-06
EP0670457A3 EP0670457A3 (en) 1996-10-23

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EP94117130A Withdrawn EP0670457A3 (en) 1994-02-25 1994-10-29 Electric baking and roasting oven.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3009748A3 (en) * 2015-09-11 2016-05-25 V-Zug AG Baking oven with rear chamber for circulation of hot air

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101013376B1 (en) † 2003-12-10 2011-02-14 삼성전자주식회사 Cooking device and its control method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61165527A (en) * 1985-01-14 1986-07-26 Matsushita Electric Ind Co Ltd Heat-cooking apparatus
EP0443330A2 (en) * 1990-02-22 1991-08-28 Bosch-Siemens HausgerÀ¤te GmbH Baking oven
US5203315A (en) * 1992-08-18 1993-04-20 Raytheon Company Gas convection oven with dual function burner
EP0595083A2 (en) * 1992-10-26 1994-05-04 Moulinex S.A. Domestic cooking oven

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56149531A (en) * 1980-04-22 1981-11-19 Sharp Corp Hot-air circulation type cooker
DE4116500A1 (en) * 1991-05-21 1992-11-26 Binder Wtb Labortech Gmbh LABORATORY HOT CUPBOARD
DE4234299A1 (en) * 1992-10-12 1994-04-14 Georg Fischer Convection baking oven - has upwards diagonal air flow to expand usage to baking large loaves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61165527A (en) * 1985-01-14 1986-07-26 Matsushita Electric Ind Co Ltd Heat-cooking apparatus
EP0443330A2 (en) * 1990-02-22 1991-08-28 Bosch-Siemens HausgerÀ¤te GmbH Baking oven
US5203315A (en) * 1992-08-18 1993-04-20 Raytheon Company Gas convection oven with dual function burner
EP0595083A2 (en) * 1992-10-26 1994-05-04 Moulinex S.A. Domestic cooking oven

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 372 (M-544), 11.Dezember 1986 & JP-A-61 165527 (MATSUSHITA), 26.Juli 1986, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3009748A3 (en) * 2015-09-11 2016-05-25 V-Zug AG Baking oven with rear chamber for circulation of hot air

Also Published As

Publication number Publication date
EP0670457A3 (en) 1996-10-23
DE4406155A1 (en) 1995-08-31

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