EP2503249A1 - Oven - Google Patents

Oven Download PDF

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Publication number
EP2503249A1
EP2503249A1 EP12157701A EP12157701A EP2503249A1 EP 2503249 A1 EP2503249 A1 EP 2503249A1 EP 12157701 A EP12157701 A EP 12157701A EP 12157701 A EP12157701 A EP 12157701A EP 2503249 A1 EP2503249 A1 EP 2503249A1
Authority
EP
European Patent Office
Prior art keywords
cooking chamber
oven
air
guide elements
air guide
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.)
Ceased
Application number
EP12157701A
Other languages
German (de)
French (fr)
Inventor
Margit Andreas
Rainer Lebacher
Peter Mallinger
Angelika Oberstaller
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2503249A1 publication Critical patent/EP2503249A1/en
Ceased legal-status Critical Current

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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
    • 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
    • F24C15/12—Side rests; Side plates; Cover lids; Splash guards; Racks outside ovens, e.g. for drying plates

Definitions

  • the invention relates to an oven with a closable by an oven door cooking chamber in which hot air is introduced into the cooking chamber by means of a preferably located in the cooking chamber fan for the cooking process by means of spoiler elements.
  • the present invention has for its object, an oven of the type mentioned in such a way that fogging of the inside of the oven door, preferably the glass pane of a see-through window can be reduced by condensate or even avoided.
  • the hot air provided for the cooking process and necessary for circulating air is assigned a further function, namely the heating of the door inner surface by air flows, which are aimed specifically at this door inner surface and thus largely prevent condensation on this now increased approximately to the temperature level of the inner region of the cooking chamber door inner surface.
  • a further embodiment of the invention is given by the fact that the leading to the inside of the furnace door air guide elements are preferably formed as channels in wall surfaces of the cooking chamber in lateral wall surfaces. In so-called convection ovens, it is advantageous, preferably the side walls of the cooking chamber in several levels with z. B. rib-like channels to provide for the flow of hot air, which can then serve as brackets for retractable Gargut lacking.
  • the leading to the inside of the furnace door spoiler elements may be formed by air ducts as components of mountable on lateral wall surfaces of the cooking chamber Einschiebegestellen for Gargutlini. This slide-in can, together with the air guide z. B. for cleaning or in other applications of the oven easily removed from the oven and, if appropriate, then used again.
  • the air guiding elements have outflow openings both on the inside of the oven door and in the area between the oven door and the rear side of the cooking chamber. So z. B. a portion of the hot air flowing into the preferably two-sided air guide elements, about 10 to 20% are used for blowing the oven door and the rest directly for the heating of the food.
  • the air guide elements are fluidically connected to the air guide elements associated with the fan.
  • the oven according to FIGS. 1 and 2 has a cuboidal muffle 1, which delimits a frontally open cooking chamber 2, which cooking chamber can be closed by an oven door 15 ( FIG. 2 ).
  • a baffle 4 At the back of the cooking chamber 2 with a small distance to the rear muffle wall 3 is a baffle 4, behind which a fan 5 is arranged, which may be surrounded by an annular heating element.
  • the baffle 4 Immediately before the blower 5, the baffle 4 has an air intake opening 6 and at the edge a plurality of outflow openings, for. B. with the function as the fan 5 directly associated air guide elements 7, which are to convey hot air into the oven during the cooking process.
  • a heating element 16 is attached to the upper boundary of the cooking chamber 2, which can serve as a top heat or grill grill.
  • FIG. 2 shows 8 Einschiebegestelle 9 are mounted on the side cooking chamber walls, which are not reproduced in detail in the drawing.
  • these Einschiebegestelle 9 have in several levels one above the other horizontal holders for several retractable Garguta 10, as in FIG. 2 indicated.
  • These slide-in rack 9 are z. B. back provided with air guide elements 11, z. B. in the form of horizontal channels, as in FIG. 1 indicated by an example.
  • the spoiler elements 11 of the insertion rack 9 are fluidically connected directly to the blower 5 associated on both sides spoiler elements at 17 designated edge region of the baffle plate 4 ( FIG. 1 ).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Abstract

The baking oven has cooking chamber (2) with door (15). A fan (5) is arranged behind a baffle (4) of rear muffle wall (3) provided at back of cooking chamber. The fan is connected with air-guide elements through which hot air (19) is flowed to inner surface (14) of door.

Description

Die Erfindung bezieht sich auf einen Backofen mit einem durch eine Ofentür verschließbaren Garraum, in den durch eine vorzugsweise im Garraum befindliches Gebläse für den Garprozess mittels Luftleitelementen Heißluft in den Garraum eingeführt wird.The invention relates to an oven with a closable by an oven door cooking chamber in which hot air is introduced into the cooking chamber by means of a preferably located in the cooking chamber fan for the cooking process by means of spoiler elements.

Bei einem bekannten Backofen ( US 7,784,457 B2 ) ist an der Rückseite des Garraums hinter einer sogenannten Prallwand ein Umluftgebläse angeordnet, dessen Luftströmung über ein ringförmiges Heizelement geführt ist und die Heißluft über an den Seitenwänden des Garraums befestigte Luftleitelemente dem Inneren des Garraums zugeleitet wird. Diese Luftleitelemente besitzen in unterschiedlichen Ebenen für dort einschiebbare Gargutträger Strömungsöffnungen, die gegen die Mitte und die genannte Rückseite des Garraums gerichtet sind, so dass die Heißluft während eines Garprozesses den Garraum in Richtung auf die Rückseite zu durchströmen kann.In a known oven ( US 7,784,457 B2 ) is arranged at the rear of the cooking chamber behind a so-called baffle a circulating air blower, the air flow is guided over an annular heating element and the hot air is supplied via attached to the side walls of the cooking chamber air guide to the interior of the cooking chamber. These spoilers have in different levels for there eingeschiebbare food support flow openings, which are directed towards the center and said back of the cooking chamber, so that the hot air can flow through the cooking chamber in the direction of the back during a cooking process.

Allgemein bei Backöfen besteht das Problem, dass die erhitzte und meist feuchte Luft innerhalb des Garraums an der in der Regel kühleren Innenseite der Ofentür kondensiert und beschlägt, so dass bei Vorhandensein eines Durchsichtfensters in der Ofentür die Einsicht von außen her zum Gargut im Garraum zumindest erschwert oder gar unmöglich gemacht wird.Generally in ovens, there is the problem that the heated and usually moist air condenses and fogged inside the cooking chamber on the usually cooler inside of the oven door, so that in the presence of a see-through window in the oven door, the view from the outside to the food in the oven at least difficult or even impossible.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Backofen der eingangs genannten Art so auszubilden, dass ein Beschlagen der Innenseite der Ofentür, vorzugsweise der Glasscheibe eines Durchsichtfensters durch Kondensat verringert oder gar vermieden werden kann.The present invention has for its object, an oven of the type mentioned in such a way that fogging of the inside of the oven door, preferably the glass pane of a see-through window can be reduced by condensate or even avoided.

Diese Aufgabe wird bei einem Backofen der eingangs genannten Art dadurch gelöst, dass unmittelbar Heißluftströme zur Innenseite der Ofentür führende Luftleitelemente vorgesehen sind.This object is achieved in an oven of the type mentioned above in that direct hot air flows to the inside of the oven door leading air guide elements are provided.

Auf diese Weise wird der für den Garprozess vorgesehenen und beim Umluftgaren notwendigen Heißluft eine weitere Funktion zugeordnet, nämlich die Erhitzung der Türinnenfläche durch Luftströmungen, die gezielt auf diese Türinnenfläche gerichtet sind und somit eine Kondensatbildung an dieser nunmehr etwa auf das Temperaturniveau des inneren Bereiches des Garraums erhöhten Türinnenfläche weitgehend verhindern.In this way, the hot air provided for the cooking process and necessary for circulating air is assigned a further function, namely the heating of the door inner surface by air flows, which are aimed specifically at this door inner surface and thus largely prevent condensation on this now increased approximately to the temperature level of the inner region of the cooking chamber door inner surface.

Eine weitere Ausgestaltung der Erfindung ist dadurch gegeben, dass die zur Innenseite der Ofentür führenden Luftleitelemente als Kanäle in Wandflächen des Garraums vorzugsweise in seitlichen Wandflächen ausgebildet sind. Bei sogenannten Umluftöfen ist es vorteilhaft, vorzugsweise die Seitenwände des Garraums in mehreren Ebenen mit z. B. rippenartigen Kanälen für die Heißluftströmung zu versehen, die dann gleichzeitig als Halterungen für einschiebbare Gargutträger dienen können.A further embodiment of the invention is given by the fact that the leading to the inside of the furnace door air guide elements are preferably formed as channels in wall surfaces of the cooking chamber in lateral wall surfaces. In so-called convection ovens, it is advantageous, preferably the side walls of the cooking chamber in several levels with z. B. rib-like channels to provide for the flow of hot air, which can then serve as brackets for retractable Gargutträger.

Alternativ können die zur Innenseite der Ofentür führenden Luftleitelemente durch Luftführungen als Bestandteile von an seitlichen Wandflächen des Garraums montierbaren Einschiebegestellen für Gargutträger gebildet sein. Diese Einschiebegestelle können samt den Luftleitelementen z. B. zur Reinigung oder bei anderen Anwendungsarten des Backofens leicht aus dem Garraum entnommen und gegebenenfalls dann wieder eingesetzt werden.Alternatively, the leading to the inside of the furnace door spoiler elements may be formed by air ducts as components of mountable on lateral wall surfaces of the cooking chamber Einschiebegestellen for Gargutträger. This slide-in can, together with the air guide z. B. for cleaning or in other applications of the oven easily removed from the oven and, if appropriate, then used again.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Luftleitelemente Ausströmöffnungen sowohl an der Innenseite der Ofentür als auch im Bereich zwischen Ofentür und der Rückseite des Garraumes aufweisen. So kann z. B. ein Teil der in die vorzugsweise beidseitig angebrachten Luftleitelemente einströmenden Heißluft, etwa 10 bis 20 % für das Anblasen der Ofentür und der Rest unmittelbar für die Erhitzung des Gargutes verwendet werden.According to a preferred embodiment of the invention, it is provided that the air guiding elements have outflow openings both on the inside of the oven door and in the area between the oven door and the rear side of the cooking chamber. So z. B. a portion of the hot air flowing into the preferably two-sided air guide elements, about 10 to 20% are used for blowing the oven door and the rest directly for the heating of the food.

Gemäß einer weiteren Ausgestaltung der Erfindung sind die Luftleitelemente strömungstechnisch an die dem Gebläse zugeordneten Luftleitelemente angeschlossen. Selbstverständlich besteht im Rahmen der Erfindung auch die Möglichkeit, die für die gezielte Erwärmung der Türinnenseite benötigte Luftströmung von einer anderen, nicht im Garraum befindlichen Druckluftquelle her zu beziehen.According to a further embodiment of the invention, the air guide elements are fluidically connected to the air guide elements associated with the fan. Of course, in the context of the invention, it is also possible to obtain the air flow required for the purposeful heating of the inside of the door from another compressed air source not located in the cooking chamber.

Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispieles nachstehend erläutert.The invention is explained below with reference to an embodiment shown in the drawing.

Es zeigt:

Figur 1
eine skizzenartige, perspektivische Darstellung eines offenen Garraumes;
Figur 2
die Schnittansicht des Backofens gemäß Figur 1.
It shows:
FIG. 1
a sketch-like, perspective view of an open cooking space;
FIG. 2
the sectional view of the oven according to FIG. 1 ,

Der Backofen gemäß Figur 1 und 2 besitzt eine quaderförmige Ofenmuffel 1, die einen frontseitig offenen Garraum 2 begrenzt, welcher Garraum durch eine Ofentür 15 verschließbar ist (Figur 2). An der Rückseite des Garraums 2 mit geringem Abstand zur rückseitigen Muffelwand 3 befindet sich eine Prallwand 4, hinter der ein Gebläse 5 angeordnet ist, das von einem ringförmigen Heizelement umgeben sein kann. Unmittelbar vor dem Gebläse 5 besitzt die Prallwand 4 eine Luftansaugöffnung 6 sowie randseitig mehrere Ausströmöffnungen, z. B. mit der Funktion als dem Gebläse 5 unmittelbar zugeordnete Luftleitelemente 7, die beim Garprozess Heißluft in den Garraum befördern sollen. Ferner ist an der oberen Begrenzung des Garraums 2 ein Heizelement 16 angebracht, das als Oberhitze oder als Grillheizkörper dienen kann.The oven according to FIGS. 1 and 2 has a cuboidal muffle 1, which delimits a frontally open cooking chamber 2, which cooking chamber can be closed by an oven door 15 ( FIG. 2 ). At the back of the cooking chamber 2 with a small distance to the rear muffle wall 3 is a baffle 4, behind which a fan 5 is arranged, which may be surrounded by an annular heating element. Immediately before the blower 5, the baffle 4 has an air intake opening 6 and at the edge a plurality of outflow openings, for. B. with the function as the fan 5 directly associated air guide elements 7, which are to convey hot air into the oven during the cooking process. Further, a heating element 16 is attached to the upper boundary of the cooking chamber 2, which can serve as a top heat or grill grill.

Wie insbesondere Figur 2 zeigt, sind an den seitlichen Garraumwänden 8 Einschiebegestelle 9 montiert, die in der Zeichnung nicht im Detail wiedergegeben sind. In der konkreten Ausführung besitzen diese Einschiebegestelle 9 in mehreren Ebenen übereinander waagerechte Halterungen für mehrere einschiebbare Gargutträger 10, wie in Figur 2 angedeutet.In particular FIG. 2 shows, 8 Einschiebegestelle 9 are mounted on the side cooking chamber walls, which are not reproduced in detail in the drawing. In the concrete embodiment, these Einschiebegestelle 9 have in several levels one above the other horizontal holders for several retractable Gargutträger 10, as in FIG. 2 indicated.

Diese Einschiebegestelle 9 sind z. B. rückseitig versehen mit Luftleitelementen 11, z. B. in Form von waagerechten Kanälen, wie in Figur 1 an einem Beispiel angedeutet. Sie besitzen ferner in Figur 2 angedeutete Ausströmöffnungen 12, die zum Inneren des Garraums 2 hin gerichtet sind sowie an den frontseitigen Enden Ausströmöffnungen 13, die unmittelbar auf die Innenfläche 14 der Ofentür 15 gerichtet sind. Die Luftleitelemente 11 der Einschiebegestelle 9 sind strömungstechnisch unmittelbar an die dem Gebläse 5 zugeordneten beidseitigen Luftleitelemente am mit 17 bezeichneten Randbereich der Prallplatte 4 angeschlossen (Figur 1).These slide-in rack 9 are z. B. back provided with air guide elements 11, z. B. in the form of horizontal channels, as in FIG. 1 indicated by an example. You also own in FIG. 2 indicated outflow openings 12 which are directed towards the interior of the cooking chamber 2 out and at the front ends of discharge openings 13 which are directed directly to the inner surface 14 of the oven door 15. The spoiler elements 11 of the insertion rack 9 are fluidically connected directly to the blower 5 associated on both sides spoiler elements at 17 designated edge region of the baffle plate 4 ( FIG. 1 ).

Beim Umluft-Garprozess bei geschlossener Ofentür 15 und bei eingeschaltetem Gebläse 5 strömt mit Überdruck Heißluft durch die seitlichen Luftleitelemente 11, wobei durch Pfeile 18 angedeutete Heißluft in das Innere des Garraums 2 strömt, z. B. mit einem Anteil von 80 bis 90 %, während an den Enden der Luftleitelemente 11, also an den offenen Enden der Kanäle Heißluft mit einem entsprechenden Anteil von 10 bis 20 % in Pfeilrichtung 19 unmittelbar zur Innenfläche 14 der Ofentür 15 geblasen wird und dort die relativ kühle Innenfläche 14 einer Fensterinnenscheibe auf ein Temperaturniveau aufheizt, das etwa der Temperatur im Inneren des Garraums 2 entspricht, wodurch eine Kondensation des heißen und feuchten Wrasens an dieser Innenfläche 14 zumindest verringert wird.During the circulating-air cooking process with the oven door 15 closed and with the blower 5 switched on, hot air flows through the lateral air-guiding elements 11 with overpressure, with arrows 18 indicated hot air flows into the interior of the cooking chamber 2, z. B. with a proportion of 80 to 90%, while at the ends of the air guide elements 11, so at the open ends of the channels hot air is blown with a corresponding proportion of 10 to 20% in the direction of arrow 19 directly to the inner surface 14 of the oven door 15 and there the relatively cool inner surface 14 of a window inner pane heats up to a temperature level which corresponds approximately to the temperature in the interior of the cooking chamber 2, as a result of which a condensation of the hot and moist steam on this inner surface 14 is at least reduced.

Claims (5)

Backofen mit einem durch eine Ofentür (15) verschließbaren Garraum (2), in den durch ein vorzugsweise im Garraum (2) befindliches Gebläse (5) für den Garprozess mittels Luftleitelementen Heißluft in den Garraum (2) eingeführt wird, dadurch gekennzeichnet, dass unmittelbar Heißluftströme (19) zur Innenfläche (14) der Ofentür (15) führende Luftleitelemente (11) vorgesehen sind.Oven with a closable by an oven door (15) cooking chamber (2), is introduced into the cooking chamber (2) by a preferably in the cooking chamber (2) located fan (5) for the cooking process by means of air vanes hot air, characterized in that directly Hot air flows (19) to the inner surface (14) of the oven door (15) leading air guide elements (11) are provided. Backofen nach Anspruch 1, dadurch gekennzeichnet, dass die zur Innenseite (14) der Ofentür (15) führenden Luftleitelemente (11) als Kanäle in Wandflächen (8, 9) des Garraums (2) vorzugsweise in seitlichen Wandflächen ausgebildet sind.Baking oven according to claim 1, characterized in that the leading to the inside (14) of the oven door (15) air guide elements (11) as channels in wall surfaces (8, 9) of the cooking chamber (2) are preferably formed in lateral wall surfaces. Backofen nach Anspruch 1, dadurch gekennzeichnet, dass die zur Innenfläche (14) der Ofentür (15) führenden Luftleitelemente (11) durch Luftführungen als Bestandteile von an seitlichen Wandflächen (8) des Garraums (2) montierbaren Einschiebegestellen (9) für Gargutträger (10) gebildet sind.Oven according to claim 1, characterized in that the inner surface (14) of the oven door (15) leading air guide elements (11) by air ducts as components of on lateral wall surfaces (8) of the cooking chamber (2) mountable Einschiebegestellen (9) for food support (10 ) are formed. Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Luftleitelemente (11) Ausströmöffnungen (12, 13) sowohl an der Innenfläche (14) der Ofentür (15) als auch im Bereich zwischen Ofentür (15) und der Rückseite des Garraums (2) aufweisen.Baking oven according to one of the preceding claims, characterized in that the air guide elements (11) outflow openings (12, 13) both on the inner surface (14) of the oven door (15) and in the region between the oven door (15) and the back of the cooking chamber (2 ) exhibit. Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Luftleitelemente (11) strömungstechnisch an die dem Gebläse (5) zugeordneten Luftleitelemente angeschlossen sind.Baking oven according to one of the preceding claims, characterized in that the air guide elements (11) are fluidically connected to the air guide elements associated with the fan (5).
EP12157701A 2011-03-25 2012-03-01 Oven Ceased EP2503249A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110006084 DE102011006084A1 (en) 2011-03-25 2011-03-25 oven

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EP2503249A1 true EP2503249A1 (en) 2012-09-26

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EP12157701A Ceased EP2503249A1 (en) 2011-03-25 2012-03-01 Oven

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DE (1) DE102011006084A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710775A (en) * 1971-12-13 1973-01-16 Rinnai Kk Hot air cooking oven
DE2410645A1 (en) * 1973-12-11 1975-06-19 Bono Apparate Ag Roasting, baking and grilling oven with sealed door - has bottom ventilating duct without sealing above condensation collector
US4892030A (en) * 1988-07-11 1990-01-09 The Grieve Corporation Airflow distribution system for discharging air from a thin plenum, and oven employing same
GB2256041A (en) * 1991-05-21 1992-11-25 Binder Wtb Labortech Gmbh Heating cabinet
JP2005049018A (en) * 2003-07-29 2005-02-24 Matsushita Electric Ind Co Ltd Cooker
EP1739362A2 (en) * 2005-06-28 2007-01-03 Whirlpool Corporation Domestic oven with air circulation system
WO2010024272A1 (en) * 2008-08-29 2010-03-04 シャープ株式会社 Cooking device
US7784457B2 (en) 2003-12-30 2010-08-31 Levent Akdag Oven

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710775A (en) * 1971-12-13 1973-01-16 Rinnai Kk Hot air cooking oven
DE2410645A1 (en) * 1973-12-11 1975-06-19 Bono Apparate Ag Roasting, baking and grilling oven with sealed door - has bottom ventilating duct without sealing above condensation collector
US4892030A (en) * 1988-07-11 1990-01-09 The Grieve Corporation Airflow distribution system for discharging air from a thin plenum, and oven employing same
GB2256041A (en) * 1991-05-21 1992-11-25 Binder Wtb Labortech Gmbh Heating cabinet
JP2005049018A (en) * 2003-07-29 2005-02-24 Matsushita Electric Ind Co Ltd Cooker
US7784457B2 (en) 2003-12-30 2010-08-31 Levent Akdag Oven
EP1739362A2 (en) * 2005-06-28 2007-01-03 Whirlpool Corporation Domestic oven with air circulation system
WO2010024272A1 (en) * 2008-08-29 2010-03-04 シャープ株式会社 Cooking device

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