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EP0482602A1 - Baking oven - Google Patents

Baking oven Download PDF

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Publication number
EP0482602A1
EP0482602A1 EP19910118057 EP91118057A EP0482602A1 EP 0482602 A1 EP0482602 A1 EP 0482602A1 EP 19910118057 EP19910118057 EP 19910118057 EP 91118057 A EP91118057 A EP 91118057A EP 0482602 A1 EP0482602 A1 EP 0482602A1
Authority
EP
European Patent Office
Prior art keywords
oven
housing
air
muffle
outlet opening
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.)
Granted
Application number
EP19910118057
Other languages
German (de)
French (fr)
Other versions
EP0482602B1 (en
Inventor
Rainer Dipl.-Ing. Haberlander (Fh)
Josef Gerl
Uwe Dipl.-Ing. Belzner
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP0482602A1 publication Critical patent/EP0482602A1/en
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Publication of EP0482602B1 publication Critical patent/EP0482602B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C15/006—Arrangements for circulation of cooling air

Definitions

  • the invention relates to an oven according to the preamble of claim 1.
  • Such an oven is known from DE-OS 23 10 290.
  • a largely closed, elongated air duct is provided above the furnace muffle, into which the pressure side of a cooling air fan tires.
  • a vapor opening likewise opens into the air duct, through which strongly heated vapors can enter during operation of the oven and into the air duct and are discharged to the outside together with the heated air coming from the surrounding area of the furnace muffle.
  • This system requires a cooling air blower.
  • the invention has for its object to improve an oven of the type mentioned in the preamble of claim 1 so that an effective and targeted heat dissipation is made possible in a very simple manner and without the installation of a special cooling air blower.
  • the more or less strongly heated air flow which occurs during operation of the oven due to natural convection, is collected in a tray-like cavity, this cavity being arranged at one point on the appliance, where the convection current is hottest. This is usually the point immediately above the furnace muffle or its muffle flange on the front of the housing, that is, where the air outlet opening is usually located. In this room, a certain overpressure is created by the inflowing warm or hot air, which in turn causes a targeted outflow of this air to the outside.
  • this space i.e.
  • the less hot air from the vicinity of the oven muffle is also mixed very intimately with the very hot air from the oven cavity of the oven muffle, whereby a mixing temperature is set for the exhaust air flowing out of the oven housing, which is significantly lower than the temperature of the Air flowing directly out of the cooking space.
  • Very hot air can be supplied from the oven muffle itself via a separate vapor duct, which opens out below the air trap in the handle area and / or from the flange or door area of the oven muffle, which also heats up strongly during operation of the oven and which is caused by natural Convection rising, strongly heated air is directed into the above-mentioned collecting space and mixed there in the specified manner.
  • the oven according to the figures is designed as a so-called built-in oven and has an outer oven housing 1, with which it rests on a base plate 2 of a piece of kitchen furniture, not shown. Inside the furnace housing 1 there is (indicated only schematically in FIG. 2) a cuboid, metallic furnace muffle 3 with a muffle flange 4 surrounding a loading opening and an insulation 5 surrounding the furnace muffle 3.
  • the oven muffle contains electrical heating elements, e.g. 6, in the form of a tubular heater and behind a baffle 7, an impeller 8, which is driven by a fan motor 9, which in turn carries a smaller fan wheel 10 on its outer shaft end, which mainly serves to cool the fan motor 9.
  • the loading opening of the furnace muffle 3 can be closed by an furnace door 11, consisting of an outer door base 12 in the form of a transparent glass pane and an outer door leaf 13, also in the form of a transparent glass pane.
  • a convection cavity 14 with air inlet openings at the bottom and air outlet openings at the top is formed between the door base 12 and the door leaf 13.
  • a handle bar 15 is attached, which has a flow orifice 17 projecting beyond the front of the housing with a roof 18 drawn downward, which flow orifices 17 extend over the entire width of the oven and one over the handle bar 15 on the oven housing attached control panel 19 with display and controls, eg 20 extends.
  • At least one air outlet opening 21 is incorporated in it, which e.g. is designed as an elongated, horizontal slot, which is covered by the flow orifice.
  • an air catch tray is designated, which is attached to the furnace housing 1 in the area of the control panel 19 and protrudes rearward inside the housing space 23 and is inclined with a rear shell wall obliquely towards the rear of the housing, as shown in FIG. 2.
  • This air-collecting tray 22 preferably also extends over the entire width of the oven or the oven housing 1.
  • the tray wall 22 ' which is inclined downwards extends approximately to the insulation 5 of the oven muffle 3 and is directed downward with the open tray side and is the lower one Housing space 23 facing in the area of the furnace muffle 3.
  • the arrow 24 shows the flow path for the vapors emerging from the furnace muffle, which is introduced into the air outlet opening in the grip area and mixes there with the air coming from the air collecting shell.
  • the aforementioned air collecting tray 22 forms a collecting and storage space 25 for the air which rises from bottom to top during operation of the oven and rinses the insulation 5 of the oven muffle 3 and heats it up (represented by solid arrows).
  • the hot air flowing upward into the cavity 14 in the oven door 11 likewise collects in the aforementioned space 25.
  • An additional air flow is brought about during operation of the circulating air blower 9, as a result of which an additional air flow of the ambient air is brought about by the outer fan wheel 10. As can be seen from FIG.
  • the lower roof-shaped edge of the flow diaphragm 17 is higher than the lower edge of the shell wall 22 '.
  • the warm or hot air flowing into the storage space 25 generates a certain excess pressure, the air accumulated in the storage space 25 practically without resistance due to the different level from the lower edge of the shell wall 22 'and air outlet opening 21 and flow orifice 17/18 Flowing outward is forced into the open, a direct rise of this flowing air along the control panel 19 is prevented by the flow panel 17.
  • the flow orifice 17 also prevents rising and warming air from reaching the control panel 19 along the front of the furnace door 11.
  • the air collecting tray 22 can of course also extend more towards the rear wall of the oven than is shown in FIG. 2.
  • this air trap which can also be a half-shell or the like, causes the warm air rising from the inside of the furnace muffle or in the vicinity thereof to be mixed, if necessary mixed and directed to a defined air outlet opening and into the open air is dissipated, even without an additional cooling fan.
  • the downwardly drawn air trap also serves as a privacy screen with respect to the interior of the furnace housing 1.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

The baking oven has an oven muffle (3) which is surrounded by an oven housing (1) and can be closed by an oven door (11). On the upper door edge, there is provided an air outlet opening (21) in association with an air guide element arranged in the oven housing, for carrying off the air heated in the surroundings of the oven muffle or the heated air coming directly out of the oven muffle. In order to improve the carrying off of air from the oven housing and to make it effective even without a cooling air blower, an air collecting shell (22) is provided, which is directed downwards with its open shell side and faces the housing space and possibly a vapour outlet opening. <IMAGE>

Description

Die Erfindung betrifft einen Backofen gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to an oven according to the preamble of claim 1.

Ein derartiger Backofen ist aus DE-OS 23 10 290 bekannt. Hierbei ist oberhalb der Ofenmuffel ein weitgehend geschlossener, langgestreckter Luftführungskanal vorgesehen, in den die Druckseite eines Kühlluftgebläses einmüdet. In den Luftführungskanal mündet ebenfalls eine Wrasenöffnung ein, durch die hindurch bei Betrieb des Backofens stark erhitzter Wrasen in den Luftführungskanal eintreten kann und zusammen mit der aus dem Umgebungsbereich der Ofenmuffel herkommenden erwärmten Luft nach außen abgeführt wird. Dieses System setzt zwingend ein Kühlluftgebläse voraus. Dies gilt ebenso auch für einen anderen bekannten Backofen (DE-AS 21 06 869), bei dem sich oberhalb der Backofenmuffel bzw. deren Isolation eine Luft-Sammelkammer befindet, in welche mittels eines Kühlluftgebläses erwärmte Luftt aus dem Umgebungsraum der Ofenmuffel sowie aus dem Schalterraum angesaugt wird und wiederum über einen Luftführungskanal nach außen abgeführt wird.Such an oven is known from DE-OS 23 10 290. Here, a largely closed, elongated air duct is provided above the furnace muffle, into which the pressure side of a cooling air fan tires. A vapor opening likewise opens into the air duct, through which strongly heated vapors can enter during operation of the oven and into the air duct and are discharged to the outside together with the heated air coming from the surrounding area of the furnace muffle. This system requires a cooling air blower. This also applies to another known oven (DE-AS 21 06 869), in which there is an air collecting chamber above the oven muffle or its insulation, into which air heated by a cooling air blower from the surrounding area of the oven muffle and from the switch room is sucked in and in turn discharged via an air duct to the outside.

Wenn ein derartiges Kühlluftgebläse nicht vorhanden ist - etwa bei Backöfen einfacherer Bauart - tritt das Problem auf, daß sich aufgrund der aus der Ofenmuffel selbst oder aus dem diese Ofenmuffel umgebenden Gehäuseraum mehr oder weniger stark erwärmten Luft im oberen Gehäusebereich sich ein Wärmestau ausbildet, der nicht nur eine problematische Erwärmung des meist über der Ofenmuffel befindlichen Schalterraumes innerhalb des Ofengehäuses, sondern auch eine ebenfalls problematische starke Erwärmung der Seitenwände des Ofengehäuses bewirkt, wodurch eine zu starke Erwärmung der seitlich neben dem Backofen angeordneten Küchenmöbel stattfinden kann.If such a cooling air blower is not present - for example in the case of ovens of a simpler design - the problem arises that, due to the more or less strongly heated air in the upper housing area from the oven muffle itself or from the housing muffle surrounding this oven muffle, a heat build-up does not form only a problematic heating of the switch room, which is usually located above the furnace muffle, within the furnace housing, but also a problematic, strong heating of the side walls of the furnace housing, which can result in excessive heating of the kitchen furniture arranged to the side of the oven.

Der Erfindung liegt die Aufgabe zugrunde, einen Backofen der im Oberbegriff des Patentanspruches 1 genannten Art so zu verbessern, daß in sehr einfacher Weise und auch ohne Einbau eines besonderen Kühlluftgebläses eine wirksame und gezielte Wärmeabführung ermöglicht wird.The invention has for its object to improve an oven of the type mentioned in the preamble of claim 1 so that an effective and targeted heat dissipation is made possible in a very simple manner and without the installation of a special cooling air blower.

Diese Aufgabe wird gemäß der Erfindung gelöst durch die im Kennzeichnungsteil des Patentanspruches 1 aufgeführten Maßnahmen. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den nachfolgenden Patentansprüchen.This object is achieved according to the invention by the measures listed in the characterizing part of claim 1. Advantageous embodiments of the invention emerge from the following patent claims.

Aufgrund des Vorhandenseins der Luftfangschale im Bereich der vorzugsweise frontseitigen Austrittsöffnung am Ofengehäuse wird die mehr oder weniger stark erwärmte Luftströmung, die sich bei Betrieb des Backofens durch natürliche Konvektion einstellt, in einem schalenartigen Hohlraum gesammelt, wobei dieser Hohlraum an einer Stelle des Gerätes angeordnet ist, an dem der Konvektionsstrom am heißesten ist. Üblicherweise ist dies die Stelle unmittelbar oberhalb der Ofenmuffel bzw. seines Muffelflansches an der Gehäuse-Frontseite, also dort, wo sich üblicherweise die Luftaustrittsöffnung befindet. In diesem Raum bildet sich durch die einströmende Warm- oder Heißluft ein gewisser Überdruck aus, der wiederum eine gezielte Abströmung dieser Luft nach außen bewirkt. Innerhalb dieses Raumes, d.h. innerhalb der Luftfangschale erfolgt auch eine sehr innige Vermischung der weniger heißen Luft aus der Umgebung der Ofenmuffel mit der sehr heißen Luft aus dem Garraum der Ofenmuffel, wobei sich für die aus dem Ofengehäuse ausströmende Abluft eine Mischtemperatur einstellt, die wesentlich niedriger ist als die Temperatur der unmittelbar aus dem Garraum ausströmenden Luft. Eine Zuführung von sehr heißer Luft aus der Ofenmuffel selbst kann erfolgen über einen separaten Wrasenkanal, der unterhalb der Luftfangschale im Griffbereich ausmündet und/oder aus dem Flansch- oder Türbereich der Ofenmuffel, der sich ebenfalls bei Betrieb des Backofens sehr stark erhitzt und die durch natürliche Konvektion aufsteigende, starkt erhitzte Luft in den vorgenannten Sammelraum geleitet und dort in der angegebenen Weise vermischt wird. Die in der Luftfangschale auch durch alleinige natürliche Konvektion gesammelte Warmluft bewirkt in diesem Raum einen gewissen Überdruck, der ein Abströmen ins Freie bewirkt, was dadurch begünstigt ist, daß diese Luft zur Austrittsöffnung hin durch deren besondere Anordnung weniger strömungswiderstand findet als nach allen anderen Richtungen hin, so daß hier ein erzwungener und gezielter Abfluß der Warmluft erfolgt.Due to the presence of the air collecting tray in the area of the preferably front outlet opening on the oven housing, the more or less strongly heated air flow, which occurs during operation of the oven due to natural convection, is collected in a tray-like cavity, this cavity being arranged at one point on the appliance, where the convection current is hottest. This is usually the point immediately above the furnace muffle or its muffle flange on the front of the housing, that is, where the air outlet opening is usually located. In this room, a certain overpressure is created by the inflowing warm or hot air, which in turn causes a targeted outflow of this air to the outside. Within this space, i.e. The less hot air from the vicinity of the oven muffle is also mixed very intimately with the very hot air from the oven cavity of the oven muffle, whereby a mixing temperature is set for the exhaust air flowing out of the oven housing, which is significantly lower than the temperature of the Air flowing directly out of the cooking space. Very hot air can be supplied from the oven muffle itself via a separate vapor duct, which opens out below the air trap in the handle area and / or from the flange or door area of the oven muffle, which also heats up strongly during operation of the oven and which is caused by natural Convection rising, strongly heated air is directed into the above-mentioned collecting space and mixed there in the specified manner. The warm air collected in the air trap by natural convection alone creates a certain overpressure in this room, which causes it to flow outside, which is favored by the fact that this air has less flow resistance to the outlet opening due to its special arrangement than in all other directions , so that there is a forced and targeted outflow of warm air.

Für Backöfen, bei denen oberhalb der Ofentür eine Bedienblende oder ein Schaltertableau mit Bedien- und Anzeigeorganen angeordnet ist, ergeben sich besondere Vorteile, wenn sich an die innerhalb des Ofengehäuses liegende Luftfangschale eine zumindest die Austrittsöffnung überdeckende und über die Gehäusefrontseite hinausragende Strömungsblende anschließt. Auf diese Weise wird die an den Ofentür außen oder innen hochströmende erhitzte Luft daran gehindert, unmittelbar in den Bereich der oberen Bedienblende zu gelangen. Die Luftströmung wird vielmehr von dieser Bedienblende abgedrängt, begünstigt durch Luftströmung, die von der Luftfangschale herkommt. Durch entsprechende dachförmige Ausgestaltung wird diese Strömungsblende praktisch in die Luftfangschale und den dadurch gebildeten Überdruckraum mit einbezogen.For ovens in which an operating panel or a switch panel with operating and display elements is arranged above the oven door, there are particular advantages if the air collecting tray located inside the oven housing is followed by a flow panel which at least covers the outlet opening and projects beyond the front of the housing. In this way, the heated air flowing up or out of the furnace door is prevented from directly reaching the area of the upper control panel. Rather, the air flow is pushed away from this control panel, favored by the air flow that comes from the air collecting pan. By means of a corresponding roof-shaped design, this flow orifice is practically incorporated into the air collecting shell and the overpressure space formed thereby.

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

Es zeigt:

  • Fig. 1 eine perspektivische Darstellung des Backofens gemäß der Erfindung,
  • Fig. 2 eine Schnittansicht des Backofens gemäß Fig. 1.
It shows:
  • 1 is a perspective view of the oven according to the invention,
  • FIG. 2 shows a sectional view of the oven according to FIG. 1.

Der Backofen gemäß den Figuren ist als sogenannter Unterbau-Backofen ausgestaltet und besitzt ein äußeres Ofengehäuse 1, mit dem er auf einer Stellplatte 2 eines nicht weiter dargestellten Küchenmöbels ruht. Im Inneren des Ofengehäuses 1 befindet sich (in Fig. 2 nur schematisch angedeutet) eine quaderformige, metallische Ofenmuffel 3 mit einem eine Beschickungsöffnung umziehenden Muffelflansch 4 und einer die Ofenmuffel 3 umgebenden Isolation 5. Die Backofenmuffel enthält elektrische Heizelemente, z.B. 6, in Form eines Rohrheizkörpers sowie hinter einer Prallwand 7 ein Gebläserad 8, das angetrieben wird von einem Gebläsemotor 9, der seinerseits auf seinem äußeren Wellenende ein kleineres Lüfterrad 10 trägt, das hauptsächlich zur Kühlung des Gebläsemotors 9 dient. Die Beschickungsöffnung der Ofenmuffel 3 ist verschließbar durch eine Ofentür 11, bestehend aus einem äußeren Türboden 12 in Form einer transparenten Glasscheibe und aus einem äußeren Türblatt 13, ebenfalls in Form einer transparenten Glasscheibe. Zwischen Türboden 12 und Türblatt 13 gebildet ist ein Konvektions-Hohlraum 14 mit Lufteintrittsöffnungen unten und Luftaustrittsöffnungen oben. Am oberen Rand der Ofentür 11 ist eine Griffleiste 15 befestigt, die eine über die Gehäuse- frontseite hinausragende Strömungsblende 17 besitzt mit einem dachförmig nach unten gezogenen Ansatz 18, welche Strömungsblenden 17 sich über die gesamte Breite des Backofens und einer über der Griffleiste 15 am Ofengehäuse befestigten Bedienblende 19 mit Anzeige- und Bedienelementen, z.B. 20 erstreckt. Z.B. im mittleren Bereich des Griffteils 15 ist in diesen zumindest eine Luftaustrittsöffnung 21 eingearbeitet, die z.B. als langgezogener, horizontaler Schlitz ausgebildet ist, der von der Strömungsblende überdeckt ist. Mit 22 ist eine Luftfangschale bezeichnet, die am Ofengehäuse 1 im Bereich der Bedienblende 19 befestigt ist und im Inneren des Gehäuseraumes 23 nach hinten ragt und mit einer rückwärtigen Schalenwand schräg zur Gehäuse-Rückseite hin geneigt ist, wie Fig. 2 zeigt. Vorzugsweise erstreckt sich auch diese Luftfangschale 22 über die gesamte Breite des Backofens bzw. des Ofengehäuses 1. Die nach unten schräg geneigte Schalenwand 22' erstreckt sich bis annähernd zur Isolation 5 der Ofenmuffel 3 und ist mit der offenen Schalenseite nach unten gerichtet und ist dem unteren Gehäuseraum 23 im Bereich der Ofenmuffel 3 zugewandt. Durch den Pfeil 24 ist der Strömungsweg für den aus der Ofenmuffel austretenden Wrasen verdeutlicht, der im Griffbereich in die Luftaustrittsöffnung eingeleitett wird und sich dort mit der von der Luftfangschale herkommenden Luft vermischt. Die vorgenannte Luftfangschale 22 bildet einen Fang- und Stauraum 25 für die bei Betrieb des Backofens von unten nach oben aufsteigende, die Isolation 5 der Ofenmuffel 3 umspülende und sich dabei erwärmende Luft (dargestellt durch ausgezogenen Pfeile). In dem vorgenannten Raum 25 sammelt sich ebenfalls die in den Hohlraum 14 in der Ofentür 11 nach oben strömende Heißluft. Eine zusätzliche Luftströmung wird bewirkt bei Betrieb des Umluftgebläses 9, wodurch durch das äußere Lüfterrad 10 eine zusätzliche Luftströmung der Umgebungsluft bewirkt wird. Wie sich aus Fig. 2 ergibt, liegt der untere dachförmige Rand der Strömungsblende 17 höher als der untere Rand der Schalenwand 22'. Unter Einbeziehung der Strömungsblende 17 erzeugt die in dem Stauraum 25 einströmende Warm- oder Heißluft einen gewissen Überdruck, wobei durch das unterschiedliche Niveau vom unterem Rand der Schalenwand 22' und Luftaustrittsöffnung 21 sowie Strömungsblende 17/18 die im Stauraum 25 angesammelte Luft praktisch ohne Widerstand zum Abströmen nach außen ins Freie gezwungen wird, wobei ein unmittelbares Hochsteigen dieser strömenden Luft an der Bedienblende 19 entlang durch die Strömungsblende 17 verhindert wird. Durch die Strömungsblende 17 wird ebenfalls verhindert, daß entlang der Frontseite der Ofentür 11 hochsteigende und sich erwärmende Luft unmittelbar zur Bedienblende 19 gelangt.The oven according to the figures is designed as a so-called built-in oven and has an outer oven housing 1, with which it rests on a base plate 2 of a piece of kitchen furniture, not shown. Inside the furnace housing 1 there is (indicated only schematically in FIG. 2) a cuboid, metallic furnace muffle 3 with a muffle flange 4 surrounding a loading opening and an insulation 5 surrounding the furnace muffle 3. The oven muffle contains electrical heating elements, e.g. 6, in the form of a tubular heater and behind a baffle 7, an impeller 8, which is driven by a fan motor 9, which in turn carries a smaller fan wheel 10 on its outer shaft end, which mainly serves to cool the fan motor 9. The loading opening of the furnace muffle 3 can be closed by an furnace door 11, consisting of an outer door base 12 in the form of a transparent glass pane and an outer door leaf 13, also in the form of a transparent glass pane. A convection cavity 14 with air inlet openings at the bottom and air outlet openings at the top is formed between the door base 12 and the door leaf 13. On the upper edge of the oven door 11, a handle bar 15 is attached, which has a flow orifice 17 projecting beyond the front of the housing with a roof 18 drawn downward, which flow orifices 17 extend over the entire width of the oven and one over the handle bar 15 on the oven housing attached control panel 19 with display and controls, eg 20 extends. E.g. In the central region of the handle part 15, at least one air outlet opening 21 is incorporated in it, which e.g. is designed as an elongated, horizontal slot, which is covered by the flow orifice. With 22 an air catch tray is designated, which is attached to the furnace housing 1 in the area of the control panel 19 and protrudes rearward inside the housing space 23 and is inclined with a rear shell wall obliquely towards the rear of the housing, as shown in FIG. 2. This air-collecting tray 22 preferably also extends over the entire width of the oven or the oven housing 1. The tray wall 22 'which is inclined downwards extends approximately to the insulation 5 of the oven muffle 3 and is directed downward with the open tray side and is the lower one Housing space 23 facing in the area of the furnace muffle 3. The arrow 24 shows the flow path for the vapors emerging from the furnace muffle, which is introduced into the air outlet opening in the grip area and mixes there with the air coming from the air collecting shell. The aforementioned air collecting tray 22 forms a collecting and storage space 25 for the air which rises from bottom to top during operation of the oven and rinses the insulation 5 of the oven muffle 3 and heats it up (represented by solid arrows). The hot air flowing upward into the cavity 14 in the oven door 11 likewise collects in the aforementioned space 25. An additional air flow is brought about during operation of the circulating air blower 9, as a result of which an additional air flow of the ambient air is brought about by the outer fan wheel 10. As can be seen from FIG. 2, the lower roof-shaped edge of the flow diaphragm 17 is higher than the lower edge of the shell wall 22 '. With the inclusion of the flow orifice 17, the warm or hot air flowing into the storage space 25 generates a certain excess pressure, the air accumulated in the storage space 25 practically without resistance due to the different level from the lower edge of the shell wall 22 'and air outlet opening 21 and flow orifice 17/18 Flowing outward is forced into the open, a direct rise of this flowing air along the control panel 19 is prevented by the flow panel 17. The flow orifice 17 also prevents rising and warming air from reaching the control panel 19 along the front of the furnace door 11.

Die Luftfangschale 22 kann sich selbstverständlich auch mehr zur Backofen-Rückwand hin erstrecken als in Fig. 2 gezeigt ist. In jedem Falle wird aufgrund des Vorhandenseins dieser Luftfangschale, die auch eine Halbschale oder dgl. sein kann, bewirkt, daß die aus dem Inneren der Ofenmuffel oder in der Umgebung derselben hochsteigende Warmluft gesammelt, ggf. vermischt und gezielt einer definierten Luftaustrittsöffnung zugeführt und ins Freie abgeführt wird, auch ohne zusätzliches Kühlgebläse. Die nach unten gezogene Luftfangschale dient gleichzeitig als Sichtschutz in Bezug auf den Innenraum des Ofengehäuses 1.The air collecting tray 22 can of course also extend more towards the rear wall of the oven than is shown in FIG. 2. In any case, due to the presence of this air trap, which can also be a half-shell or the like, causes the warm air rising from the inside of the furnace muffle or in the vicinity thereof to be mixed, if necessary mixed and directed to a defined air outlet opening and into the open air is dissipated, even without an additional cooling fan. The downwardly drawn air trap also serves as a privacy screen with respect to the interior of the furnace housing 1.

Claims (8)

1. Backofen mit einer durch die Ofentür verschließbaren Ofenmuffel, die mit Abstand von einem Ofengehäuse umgeben ist sowie mit einer am oberen Türrand angeordneten Luftaustrittsöffnung in unmittelbarer Verbindung mit einem oberhalb der Ofenmuffel zumindest zum Teil im Gehäuseinneren angeordneten Luftleitelement, das strömungsmäßig mit dem Gehäuseraum und ggf. auch mit dem Muffelraum in Verbindung steht, dadurch gekennzeichnet, daß das Luftleitelement in Form einer sich über den Bereich der Luftaustrittsöffnung (21) erstreckenden Luftfangschale (22) ausgebildet ist, die mit ihrer offenen Schalenseite nach unten gerichtet und dem Gehäuseraum (23) zugewandt ist und die oberhalb des unteren Schalenrandes in die Austrittsöffnung übergeht.1.Oven with an oven muffle that can be closed by the oven door, which is surrounded by a furnace housing at a distance, and with an air outlet opening arranged at the upper door edge in direct connection with an air guiding element that is at least partially arranged inside the housing above the furnace muffle and that flows with the housing space and, if necessary is also connected to the muffle chamber, characterized in that the air guiding element is designed in the form of an air collecting shell (22) which extends over the region of the air outlet opening (21) and which faces downward with its open shell side and the housing Room (23) faces and which merges into the outlet opening above the lower edge of the shell. 2. Backofen nach Anspruch 1, dadurch gekennzeichnet, daß die Luftfangschale (22) sich über die gesamte Breite des Ofengehäuses (1) erstreckt.2. Baking oven according to claim 1, characterized in that the air collecting tray (22) extends over the entire width of the oven housing (1). 3. Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine rückwärtige Schalenwand (22') schräg zur Gehäuse-Rückseite hin geneigt ist.3. Oven according to one of the preceding claims, characterized in that a rear shell wall (22 ') is inclined towards the rear of the housing. 4. Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich an die innerhalb des Ofengehäuses (1) liegende Luftfangschale (22) eine zumindest die Luftaustrittsöffnung (21) überdeckende und über die Gehäuse-Frontseite hinausragende Strömungsblende (17) anschließt.4. Baking oven according to one of the preceding claims, characterized in that adjoining the inside of the oven housing (1) lying air collecting tray (22) is at least the air outlet opening (21) covering and projecting beyond the housing front flow orifice (17). 5. Backofen nach Anspruch 4, dadurch gekennzeichnet, daß die Strömungsblende (17) am freine Ende dachförmig nach unten gezogen ist.5. Oven according to claim 4, characterized in that the flow diaphragm (17) is pulled down at the free end roof-shaped. 6. Backofen nach Anspruch 5, dadurch gekennzeichnet, daß der untere dachförmige Rand (18) der Strömungsblende (17) höher liegt als der untere Schalenrand innerhalb des Ofengehäuses.6. Baking oven according to claim 5, characterized in that the lower roof-shaped edge (18) of the flow diaphragm (17) is higher than the lower shell edge within the oven housing. 7. Backofen nach einem der Ansprüch 4 bis 6, dadurch gekennzeichnet, daß die Strömungsblende (17) am oberen Rand der Ofentür (11) befestigt und unterhalb einer Bedienblende (19) des Ofengehäuses angeordnet ist.7. Oven according to one of claims 4 to 6, characterized in that the flow orifice (17) is attached to the upper edge of the oven door (11) and is arranged below an operating panel (19) of the oven housing. 8. Backofen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ofentür (11) zwischen einem äußeren Türblatt (13) und einem inneren Türboden (12) einen Konvektionshohlraum (14) aufweist, der strömungsmäßig in den Hohlraum der Luftfangschale (22) einmündet.8. Baking oven according to one of the preceding claims, characterized in that the oven door (11) between an outer door leaf (13) and an inner door bottom (12) has a convection cavity (14) which flows into the cavity of the air collecting tray (22) .
EP91118057A 1990-10-25 1991-10-23 Baking oven Expired - Lifetime EP0482602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033989A DE4033989A1 (en) 1990-10-25 1990-10-25 OVEN
DE4033989 1990-10-25

Publications (2)

Publication Number Publication Date
EP0482602A1 true EP0482602A1 (en) 1992-04-29
EP0482602B1 EP0482602B1 (en) 1995-06-14

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EP91118057A Expired - Lifetime EP0482602B1 (en) 1990-10-25 1991-10-23 Baking oven

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EP (1) EP0482602B1 (en)
AT (1) ATE123865T1 (en)
DE (2) DE4033989A1 (en)
DK (1) DK0482602T3 (en)
ES (1) ES2075923T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752561A1 (en) * 1995-07-04 1997-01-08 Bosch-Siemens HausgerÀ¤te GmbH Cooking oven
FR2906872A1 (en) * 2006-10-05 2008-04-11 Brandt Ind Sas Domestic electric cooking oven, has air deflecting device including inclined wall for directing air flow that is output from channel towards exterior of oven, where wall extends above glass of door to maintain orientation of air flow
WO2010062496A1 (en) * 2008-10-27 2010-06-03 Electrolux Home Products, Inc. Cooking apparatus with protective shield

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
DE19757640C5 (en) * 1997-12-23 2007-04-05 Ebm-Papst Landshut Gmbh Device for ventilating a baking oven with baking muffle
EP0949457B1 (en) * 1998-03-09 2002-09-11 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance with an exhaust air duct
KR101692735B1 (en) 2015-05-08 2017-01-04 엘지전자 주식회사 cooking appliance
DE102016223040B4 (en) * 2016-11-22 2021-04-01 Daub Backtechnik Gmbh Heating plate for ovens

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US3057341A (en) * 1959-05-21 1962-10-09 Tappan Co Built-in oven
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DE3246333A1 (en) * 1982-12-15 1984-06-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Domestic baking and roasting oven

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US3057341A (en) * 1959-05-21 1962-10-09 Tappan Co Built-in oven
DE2449962A1 (en) * 1973-10-23 1975-04-24 Europ Equip Menager SELF-CLEANING OVEN
DE3246333A1 (en) * 1982-12-15 1984-06-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Domestic baking and roasting oven

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752561A1 (en) * 1995-07-04 1997-01-08 Bosch-Siemens HausgerÀ¤te GmbH Cooking oven
FR2906872A1 (en) * 2006-10-05 2008-04-11 Brandt Ind Sas Domestic electric cooking oven, has air deflecting device including inclined wall for directing air flow that is output from channel towards exterior of oven, where wall extends above glass of door to maintain orientation of air flow
WO2010062496A1 (en) * 2008-10-27 2010-06-03 Electrolux Home Products, Inc. Cooking apparatus with protective shield
CN102227592A (en) * 2008-10-27 2011-10-26 伊莱克斯家用产品公司 Cooking apparatus with protective shield
US8450656B2 (en) 2008-10-27 2013-05-28 Electrolux Home Products, Inc. Cooking apparatus with protective shield
AU2009320240B2 (en) * 2008-10-27 2014-10-23 Electrolux Home Products, Inc. Cooking apparatus with protective shield

Also Published As

Publication number Publication date
DK0482602T3 (en) 1995-11-20
DE59105704D1 (en) 1995-07-20
EP0482602B1 (en) 1995-06-14
DE4033989A1 (en) 1992-04-30
ES2075923T3 (en) 1995-10-16
DE4033989C2 (en) 1992-07-23
ATE123865T1 (en) 1995-06-15

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