EP1328762A1 - Cooking device door - Google Patents
Cooking device doorInfo
- Publication number
- EP1328762A1 EP1328762A1 EP01986756A EP01986756A EP1328762A1 EP 1328762 A1 EP1328762 A1 EP 1328762A1 EP 01986756 A EP01986756 A EP 01986756A EP 01986756 A EP01986756 A EP 01986756A EP 1328762 A1 EP1328762 A1 EP 1328762A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooking
- cooking appliance
- shape
- appliance door
- viewing window
- 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
Links
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
- F24C15/02—Doors specially adapted for stoves or ranges
- F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
Definitions
- the invention is based on a cooking appliance door according to the preamble of claim 1.
- Cooking appliances generally have a cooking space which is arranged in a housing and can be closed with a cooking appliance door.
- a cooking device is known from DE 196 38 241 A1, namely an oven with a generic cooking device door, which has a viewing window on its side facing the cooking chamber, e.g. made of glass ceramic.
- the viewing window completely covers an opening in the cooking space and forms a contact surface with a contact flange or extends beyond a seal.
- Such viewing panels are also referred to as full-surface viewing panels.
- a metal frame enclosing the viewing window can be saved and the resulting dirt edges on the inside of the viewing window facing the cooking space can be avoided. Furthermore, a large field of vision can be achieved.
- a further disadvantage is that full-surface viewing windows according to the prior art consist of high-quality special glasses, for example made of glass ceramics, in order to be able to avoid glass breakage as a result of high thermal stresses during pyrolysis operation.
- the object of the invention is to further develop a generic cooking appliance door, in particular advantageous thermal insulation with a simple and space-saving construction.
- the invention is based on a cooking appliance door, which on its side facing a cooking chamber arranged in a housing of a cooking appliance has a viewing window which completely covers an opening in the cooking chamber and forms a contact surface with a contact flange.
- the viewing window have a shape pointing in the direction of the cooking space in at least one area.
- Advantageous thermal insulation in the inner hot area can be achieved by an enlarged insulation space or pane spacing with an overall particularly space-saving construction. Heat loss through the cooking appliance door can be reduced and energy can be saved.
- the cooking appliance door according to the invention can be used particularly advantageously in cooking appliances with a thermal self-cleaning unit.
- the shape pointing into the cooking space can be heated up more and an advantageous cleaning result can be achieved.
- Improved insulation can reduce a temperature gradient and the associated thermal stress in the area of the molding.
- a spring effect can be achieved by obliquely running flanks, via which stresses in the glass can be compensated. Due to the reduced stresses in the area of the shaping and the stress equalization made possible by the spring action, inexpensive materials can be used, such as, in particular, borosilicate glass, soda-lime glass, etc. Glass ceramics could also be used without the cost advantage.
- the viewing window has only one shape, which extends over a large part of the opening of the cooking space.
- the shape advantageously has a distance of less than 4 mm to the side and to the bottom, and a distance of less than 6 mm to the contact flange, in particular in the case of a cooking appliance door pivotably mounted about a lower axis. The smallest possible outer area can be reached which is excluded from a pyrolysis process.
- a labyrinth effect can be achieved in particular by the smallest possible distance from the contact flange, specifically with regard to dirt constituents and with regard to heat or hot gases.
- the outer, cooler area can be shielded from dirt components and from hot gases, as a result of which contamination of the outer area can be reduced and burn-in of dirt components in the outer area can be avoided by a high temperature which is not sufficient for a pyrolysis process.
- low temperatures can be reached in the area of the contact flange or in the area of a seal, as a result of which inexpensive sealing materials can be used, such as, in particular, silicone, etc.
- the shape advantageously has a depth of between 10 and 35 mm, in which area good insulation can be achieved with an acceptable amount of installation space. Particularly at a depth of 35 mm, a particularly advantageous insulation is achieved, and the insulation improves only insignificantly from a depth of 35 mm. Furthermore, the shape advantageously has flanks with an angle between 90 ° and 55 °. A particularly effective labyrinth and spring effect can be achieved with a steep angle.
- the viewing pane is prestressed, in particular advantageously by means of a thermal or chemical process with a compressive stress on its surface, as a result of which the strength of the viewing pane can be increased. In the outer cooler area, the labyrinth effect that can be achieved with regard to heat, the pretension and the associated high strength can always be maintained.
- the shape can be completely arched or can advantageously have at least one flat area, as a result of which it can be produced in a particularly simple and cost-effective manner without the view being influenced by the viewing window.
- the second viewing pane can advantageously be designed with a shape pointing in the direction facing away from the cooking space become.
- the solution according to the invention can be used in numerous cooking appliances which appear sensible to a person skilled in the art, but is particularly advantageous in cooking appliances with a thermal self-cleaning unit, such as in particular in household ovens.
- FIG. 1 shows a schematically illustrated domestic oven from the front
- FIG. 2 shows a view of an oven door of the domestic oven from the inside
- 3 shows a schematic illustration of a section along the line III-III in FIG. 1
- FIG. 4 shows a schematic illustration of a section along the line IV-IV in FIG. 1.
- FIG. 1 shows a household oven which has a cooking space 11 in a housing 10.
- the cooking space 11 is delimited by a muffle 28 and has an opening 13 which is closed with an oven door (FIGS. 3 and 4).
- the oven door On its side facing the cooking chamber 11, the oven door has a viewing window 12 which completely covers the opening 13 of the cooking chamber 11 and forms a contact surface 27 with a contact flange 16 of the muffle 28, specifically with a silicone seal 29 fastened to the contact flange 16.
- the contact surface 27 is indicated in Fig. 1 and 2 with a dashed line.
- the lens 12 can be cleaned via a known thermal self-cleaning unit or pyrolysis unit arranged in the housing 10 of the household baking oven.
- the lens 12 is cup-shaped and has a shape 14 pointing in the direction of the cooking space 11, which extends over a large part of the opening 13 of the cooking space 11, and laterally a distance 15 of 2 mm, downwards a distance 17 of 2 mm and after has a distance 18 of 4 mm to the contact flange 16 at the top.
- the small distances 15, 17, 18 to the contact flange 16 result in an advantageous labyrinth effect to the outside with regard to dirt components and heat or hot gases.
- the formation 14 has a depth 19 of 30 mm and side flanks 21 with an angle 23 of 70 ° and flanks 20 on their top and bottom with an angle 22 of 80 °. After its flanks 20, 21, the formation 14 has a flat region 24, which forms a large part of the formation 14.
- the viewing pane 12 can additionally have a heat-reflecting coating and / or a suitable printing which specifically prevents the transparency of the pane.
- the shape 14 is molded onto the lens 12.
- the viewing window 12 is placed on a plate with an indentation corresponding to the shape and is heated in its flank area by heat sources until a flowable state occurs.
- the area forming the formation 14 is sucked into the indentation of the plate by negative pressure.
- the view- pane 12 is made of borosilicate glass and is thermally prestressed with compressive stresses on its surface.
- the oven door has two further windows 25, 30, namely a middle window 25 and an outer window 30 facing away from the cooking chamber 11.
- the windows 12, 25, 30 are held together by a carrier (not shown) and by plastic seals 31 , 32 almost airtight.
- the middle viewing pane 25 has a shape 26 pointing in the direction facing away from the cooking space 11, which has approximately the same height and width as the shape 14.
- the shape 14 and the shape 26 result in an advantageous insulating space 33 between the viewing panes 12, 25
- the middle lens can alternatively also be completely flat or can be omitted if the temperature requirements are reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Ovens (AREA)
- Electric Stoves And Ranges (AREA)
- General Preparation And Processing Of Foods (AREA)
- Cookers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Special Wing (AREA)
- Vending Machines For Individual Products (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
A cooking device door having a viewing window on the side facing the cooking area located in the housing of the cooking device. The viewing window completely covering the cooking area opening and forming a contact surface with a contact flange formed surrounding the cooking area. The viewing window including a recess in at least one area oriented in the direction of the cooking area.
Description
Gargerätetür cooking appliance
Die Erfindung geht aus von einer Gargerätetür nach dem Oberbegriff des Anspruchs 1.The invention is based on a cooking appliance door according to the preamble of claim 1.
Gargeräte besitzen in der Regel einen in einem Gehäuse angeordneten Garraum, der mit einer Gargerätetür verschließbar ist. Aus der DE 196 38 241 A1 ist ein Gargerät bekannt, und zwar ein Backofen mit einer gattungsbildenden Gargerätetür, die an ihrer zum Garraum weisenden Seite eine Sichtscheibe, z.B. aus Glaskeramik, aufweist. Die Sichtscheibe überdeckt eine Öffnung des Garraums vollständig und bildet eine Kontaktfläche zu einem Anlageflansch bzw. erstreckt sich über eine Dichtung hinaus. Derartige Sichtscheiben werden auch als Vollflächensichtscheiben bezeichnet. Ein die Sichtscheibe umschließender Metallrahmen kann eingespart und dadurch bedingte Schmutzränder auf der dem Garraum zugewandten Innenseite der Sichtscheibe können vermieden werden. Ferner kann ein großes Sichtfeld erreicht werden.Cooking appliances generally have a cooking space which is arranged in a housing and can be closed with a cooking appliance door. A cooking device is known from DE 196 38 241 A1, namely an oven with a generic cooking device door, which has a viewing window on its side facing the cooking chamber, e.g. made of glass ceramic. The viewing window completely covers an opening in the cooking space and forms a contact surface with a contact flange or extends beyond a seal. Such viewing panels are also referred to as full-surface viewing panels. A metal frame enclosing the viewing window can be saved and the resulting dirt edges on the inside of the viewing window facing the cooking space can be avoided. Furthermore, a large field of vision can be achieved.
Nachteilig ist jedoch, daß durch Wärmequerleitung innerhalb der Sichtscheibe Wärme und dad ich Wärmeenergie aus dem Garraum über die Kontaktfläche nach außen abgeführt werden kann. Dies führt zum einen zu einem Wärmeverlust, und zum anderen kann dies bei Gargeräten mit einer pyrolytischen Selbstreinigungseinheit im Bereich der Kontaktflä- ehe zwischen der Sichtscheibe und dem Anlageflansch zu einer Restverschmutzung führen, und zwar indem durch die Wärmequerleitung die Temperatur der Sichtscheibe in Wärmequerleitrichtung zur Kontaktfläche soweit abnimmt, daß eine für den Pyrolyseprozeß erforderliche Temperatur in diesem Bereich unterschritten wird. Um die Wärmequerleitung im Bereich der Kontaktfläche zu reduzieren, sind Gargeräte bekannt, bei denen das Gehäuse des Gargeräts im Bereich der Kontaktfläche der Gargerätetür durch zusätzliche Heizelemente beheizt wird. Weiterhin ist nachteilig, dass Vollflächensichtscheiben nach dem Stand der Technik aus hochwertigen Spezialgläsern, z.B. aus Glaskeramik, bestehen, um Glasbruch infolge hoher Wärmespannungen beim Pyrolysebetrieb vermeiden zu können.
Die Aufgabe der Erfindung besteht darin, eine gattungsgemäße Gargerätetür weiterzu- entwickeln, und zwar sollte insbesondere eine vorteilhafte Wärmeisolierung bei einer gleichzeitig einfachen und platzsparenden Konstruktion erreicht werden.It is disadvantageous, however, that heat can be dissipated from the cooking chamber through the contact surface to the outside through heat cross conduction within the viewing window. On the one hand, this leads to a loss of heat, and on the other hand, in cooking appliances with a pyrolytic self-cleaning unit, this can lead to residual contamination in the area of the contact surface between the viewing pane and the contact flange, specifically because the temperature of the viewing pane in the transverse direction of heat transfer to the contact surface through the heat transfer line to the extent that the temperature required for the pyrolysis process falls below this range. In order to reduce the heat conduction in the area of the contact surface, cooking devices are known in which the housing of the cooking device is heated in the area of the contact area of the cooking device door by additional heating elements. A further disadvantage is that full-surface viewing windows according to the prior art consist of high-quality special glasses, for example made of glass ceramics, in order to be able to avoid glass breakage as a result of high thermal stresses during pyrolysis operation. The object of the invention is to further develop a generic cooking appliance door, in particular advantageous thermal insulation with a simple and space-saving construction.
Die Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst, während vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung den Unteransprüchen entnommen werden können.The object is achieved by the features of patent claim 1, while advantageous refinements and developments of the invention can be found in the subclaims.
Die Erfindung geht aus von einer Gargerätetür, die an ihrer zu einem in einem Gehäuse eines Gargeräts angeordneten Garraum weisenden Seite eine Sichtscheibe aufweist, die eine Öffnung des Garraums vollständig überdeckt und eine Kontaktfläche zu einem Anlageflansch bildet.The invention is based on a cooking appliance door, which on its side facing a cooking chamber arranged in a housing of a cooking appliance has a viewing window which completely covers an opening in the cooking chamber and forms a contact surface with a contact flange.
Es wird vorgeschlagen, daß die Sichtscheibe in zumindest einem Bereich eine in Richtung Garraum weisende Ausformung aufweist. Es kann eine vorteilhafte Wärmeisolierung im inneren heißen Bereich durch einen vergrößerten Isolierraum bzw. Scheibenabstand bei einer insgesamt besonders platzsparenden Konstruktion erreicht werden. Ein Wärmeverlust über die Gargerätetür kann reduziert und Energie kann eingespart werden.It is proposed that the viewing window have a shape pointing in the direction of the cooking space in at least one area. Advantageous thermal insulation in the inner hot area can be achieved by an enlarged insulation space or pane spacing with an overall particularly space-saving construction. Heat loss through the cooking appliance door can be reduced and energy can be saved.
Ferner.kann die erfindungsgemäße Gargerätetür besonders vorteilhaft bei Gargeräten mit einer thermischen Selbstreinigungseinheit eingesetzt werden. Die in den Garraum weisende Ausformung kann stärker aufgeheizt und es kann ein vorteilhaftes Reinigungsergebnis erzielt werden. Durch eine verbesserte Isolierung kann im Bereich der Ausformung ein Temperaturgradient und damit verbundene Wärmespannungen reduziert werden. In einem Flankenbereich der Ausformung, in dem ein relativ großer Temperaturgradient auf- tritt, kann durch schräg verlaufende Flanken eine Federwirkung erreicht werden, über die Spannungen im Glas ausgeglichen werden können. Durch die reduzierten Spannungen im Bereich der Ausformung und den durch die Federwirkung ermöglichten Spannungsausgleich können kostengünstige Materialien verwendet werden, wie insbesondere Borsilikatglas, Kalk-Natron-Glas usw. Unter Verzicht auf den Kostenvorteil könnte jedoch auch Glaskeramik verwendet werden.Furthermore, the cooking appliance door according to the invention can be used particularly advantageously in cooking appliances with a thermal self-cleaning unit. The shape pointing into the cooking space can be heated up more and an advantageous cleaning result can be achieved. Improved insulation can reduce a temperature gradient and the associated thermal stress in the area of the molding. In a flank area of the formation, in which a relatively large temperature gradient occurs, a spring effect can be achieved by obliquely running flanks, via which stresses in the glass can be compensated. Due to the reduced stresses in the area of the shaping and the stress equalization made possible by the spring action, inexpensive materials can be used, such as, in particular, borosilicate glass, soda-lime glass, etc. Glass ceramics could also be used without the cost advantage.
Besonders vorteilhaft besitzt die Sichtscheibe nur eine Ausformung, die sich über einen Großteil der Öffnung des Garraums erstreckt. Mit einer großflächigen Ausformung kann
konstruktiv einfach und kostengünstig ein möglichst großer Bereich mit einer besonders vorteilhaften Isolierung, einem besonders vorteilhaften Reinigungsergebnis bei einem Pyrolyseprozeß und mit geringen Spannungen erreicht werden. Die Ausformung besitzt seitlich und nach unten vorteilhaft einen Abstand kleiner als 4 mm und nach oben, insbesondere bei einer um eine untere Achse schwenkbar gelagerte Gargerätetür, einen Ab- stand kleiner als 6 mm zum Anlageflansch. Es kann ein möglichst kleiner äußerer Bereich erreicht werden, der von einem Pyrolyseprozeß ausgeschlossen ist.Particularly advantageously, the viewing window has only one shape, which extends over a large part of the opening of the cooking space. With a large-scale formation can structurally simple and inexpensive, the largest possible area can be achieved with a particularly advantageous insulation, a particularly advantageous cleaning result in a pyrolysis process and with low voltages. The shape advantageously has a distance of less than 4 mm to the side and to the bottom, and a distance of less than 6 mm to the contact flange, in particular in the case of a cooking appliance door pivotably mounted about a lower axis. The smallest possible outer area can be reached which is excluded from a pyrolysis process.
Ferner kann insbesondere durch einen möglichst kleinen Abstand zum Anlageflansch eine Labyrinthwirkung erreicht werden, und zwar hinsichtlich Schmutzbestandteilen und hinsichtlich Wärme bzw. heißen Gasen. Der äußere kühlere Bereich kann vor Schmutzbestandteilen und vor heißen Gasen abgeschirmt werden, wodurch eine Verschmutzung des äußeren Bereichs reduzierbar und ein Einbrennen von Schmutzbestandteilen im äußeren Bereich durch eine hohe, jedoch nicht für einen Pyrolyseprozeß ausreichende Temperatur vermeidbar ist. Ferner können niedrige Temperaturen im Bereich des Anlage- flansches bzw. im Bereich einer Dichtung erreicht werden, wodurch kostengünstige Dichtungsmaterialien verwendet werden können, wie insbesondere Silikon usw. Anstatt einer großen Ausnehmung sind grundsätzlich jedoch auch mehrere einzelne und/oder eine sich entlang des Anlageflansches erstreckende ringförmige Ausformung denkbar. Insbesondere über einzelne, sich entlang des Anlageflansches erstreckende Ausformungen und über eine ringförmige, sich entlang des Anlageflansches erstreckende Ausformung kann eine vorteilhafte Labyrinthwirkung und eine Spannungen ausgleichende Federwirkung erreicht werden. Die erfindungsgemäße Lösung kann neben schwenkbar gelagerten Gargerätetüren auch bei Backwagen-Türen eingesetzt werden, wobei die Ausformung dabei in Querrichtung innerhalb Anlageflächen von Hakenschienen angeordnet sein sollte.In addition, a labyrinth effect can be achieved in particular by the smallest possible distance from the contact flange, specifically with regard to dirt constituents and with regard to heat or hot gases. The outer, cooler area can be shielded from dirt components and from hot gases, as a result of which contamination of the outer area can be reduced and burn-in of dirt components in the outer area can be avoided by a high temperature which is not sufficient for a pyrolysis process. Furthermore, low temperatures can be reached in the area of the contact flange or in the area of a seal, as a result of which inexpensive sealing materials can be used, such as, in particular, silicone, etc. Instead of a large recess, there are in principle also several individual and / or one extending along the contact flange annular shape conceivable. An advantageous labyrinth effect and a tension-compensating spring effect can be achieved, in particular, via individual shapes extending along the contact flange and via an annular shape extending along the contact flange. The solution according to the invention can be used in addition to pivoting cooking device doors also for baking cart doors, the shape being arranged transversely within contact surfaces of hook rails.
Die Ausformung besitzt vorteilhaft eine Tiefe zwischen 10 und 35 mm, wobei in diesem Bereich eine gute Isolierung bei gleichzeitig akzeptablem Bauraumaufwand erreicht werden kann. Insbesondere bei einer Tiefe von 35 mm wird eine besonderes vorteilhafte Isolierung erreicht, und die Isolierung verbessert sich ab einer Tiefe von 35 mm nur noch unwesentlich. Ferner besitzt die Ausformung vorteilhaft Flanken mit einem Winkel zwischen 90° und 55°. Mit einem steilen Winkel kann eine besonders effektive Labyrinthwirkung und Federwirkung erreicht werden.
In einer weiteren Ausgestaltung der Erfindung wird vorgeschlagen, daß die Sichtscheibe vorgespannt ist, und zwar insbesondere durch ein thermisches oder chemisches Verfahren vorteilhaft mit einer Druckspannung an ihrer Oberfläche, wodurch die Festigkeit der Sichtscheibe erhöht werden kann. Im äußeren kühleren Bereich kann insbesondere durch die erzielbare Labyrinthwirkung hinsichtlich der Wärme, die Vorspannung und eine damit verbundene hohe Festigkeit stets aufrechterhalten werden.The shape advantageously has a depth of between 10 and 35 mm, in which area good insulation can be achieved with an acceptable amount of installation space. Particularly at a depth of 35 mm, a particularly advantageous insulation is achieved, and the insulation improves only insignificantly from a depth of 35 mm. Furthermore, the shape advantageously has flanks with an angle between 90 ° and 55 °. A particularly effective labyrinth and spring effect can be achieved with a steep angle. In a further embodiment of the invention it is proposed that the viewing pane is prestressed, in particular advantageously by means of a thermal or chemical process with a compressive stress on its surface, as a result of which the strength of the viewing pane can be increased. In the outer cooler area, the labyrinth effect that can be achieved with regard to heat, the pretension and the associated high strength can always be maintained.
Die Ausformung kann vollständig gewölbt ausgeführt sein oder kann vorteilhaft zumindest einen ebenen Bereich aufweisen, wodurch diese besondere einfach und kostengünstig hergestellt werden kann, ohne daß dadurch die Sicht durch die Sichtscheibe beeinflußt wird.The shape can be completely arched or can advantageously have at least one flat area, as a result of which it can be produced in a particularly simple and cost-effective manner without the view being influenced by the viewing window.
Um den Isolierbereich bzw. den Abstand zwischen der inneren Sichtscheibe und einer vom Garraum abgewandten, an die Sichtscheibe angrenzenden zweiten Sichtscheibe weiter zu vergrößern, ohne dabei den Garraum zu verkleinern, kann vorteilhaft die zweite Sichtscheibe mit einer in die vom Garraum abgewandte Richtung weisenden Ausformung ausgeführt werden.In order to further enlarge the insulating area or the distance between the inner viewing pane and a second viewing pane facing away from the cooking space and adjacent to the viewing pane, without reducing the size of the cooking space, the second viewing pane can advantageously be designed with a shape pointing in the direction facing away from the cooking space become.
Die erfindungsgemäße Lösung kann bei zahlreichen, dem Fachmann als sinnvoll erscheinenden Gargeräten angewendet werden, jedoch besonders vorteilhaft bei Gargeräten mit einer thermischen Selbstreinigungseinheit, wie insbesondere bei Haushaltsbacköfen.The solution according to the invention can be used in numerous cooking appliances which appear sensible to a person skilled in the art, but is particularly advantageous in cooking appliances with a thermal self-cleaning unit, such as in particular in household ovens.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fach- mann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages result from the following description of the drawing. In the drawings, an embodiment of the invention is shown. The drawings, description, and claims contain numerous features in combination. The specialist will expediently also consider the features individually and combine them into useful further combinations.
Es zeigen:Show it:
Fig. 1 einen schematisch dargestellten Haushaltsbackofen von vorn, Fig. 2 eine Ansicht einer Backofentür des Haushaitsbackofens von innen,
Fig. 3 eine schematische Darstellung eines Schnitts entlang der Linie lll-III in Fig. 1 und Fig. 4 eine schematische Darstellung eines Schnitts entlang der Linie IV-IV in Fig. 1.1 shows a schematically illustrated domestic oven from the front, FIG. 2 shows a view of an oven door of the domestic oven from the inside, 3 shows a schematic illustration of a section along the line III-III in FIG. 1 and FIG. 4 shows a schematic illustration of a section along the line IV-IV in FIG. 1.
Fig. 1 zeigt einen Haushaltsbackofen, der in einem Gehäuse 10 einen Garraum 11 aufweist. Der Garraum 11 ist von einer Muffel 28 begrenzt und besitzt eine Öffnung 13, die mit einer Backofentür verschlossen ist (Fig. 3 und 4). Die Backofentür besitzt an ihrer zum Garraum 11 weisenden Seite eine Sichtscheibe 12, die die Öffnung 13 des Garraums 11 vollständig überdeckt und eine Kontaktfläche 27 zu einem Anlageflansch 16 der Muffel 28 bildet, und zwar zu einer am Anlageflansch 16 befestigten Silikondichtung 29. Die Kontaktfläche 27 ist in Fig. 1 und 2 mit einer gestrichelten Linie angedeutet. Die Sichtscheibe 12 ist über eine im Gehäuse 10 des Haushaltsbackofens angeordnete an sich bekannte thermische Selbstreinigungseinheit bzw. Pyrolyseeinheit reinigbar.1 shows a household oven which has a cooking space 11 in a housing 10. The cooking space 11 is delimited by a muffle 28 and has an opening 13 which is closed with an oven door (FIGS. 3 and 4). On its side facing the cooking chamber 11, the oven door has a viewing window 12 which completely covers the opening 13 of the cooking chamber 11 and forms a contact surface 27 with a contact flange 16 of the muffle 28, specifically with a silicone seal 29 fastened to the contact flange 16. The contact surface 27 is indicated in Fig. 1 and 2 with a dashed line. The lens 12 can be cleaned via a known thermal self-cleaning unit or pyrolysis unit arranged in the housing 10 of the household baking oven.
Erfindungsgemäß ist die Sichtscheibe 12 napfförmig ausgebildet und besitzt eine in Richtung Garraum 11 weisende Ausformung 14, die sich über einen Großteil der Öffnung 13 des Garraums 11 erstreckt, und seitlich einen Abstand 15 von 2 mm, nach unten einen Abstand 17 von 2 mm und nach oben einen Abstand 18 von 4 mm zum Anlageflansch 16 aufweist. Durch die geringen Abstände 15, 17, 18 zum Anlageflansch 16 ergibt sich eine vorteilhafte Labyrinthwirkung nach außen hinsichtlich Schmutzbestandteilen und Wärme bzw. heißen Gasen. Die Ausformung 14 besitzt eine Tiefe 19 von 30 mm und seitliche Flanken 21 mit einem Winkel 23 von 70° und Flanken 20 an ihrer Ober- und Unterseite mit einem Winkel 22 von 80°. Die Ausformung 14 besitzt nach ihren Flanken 20, 21 einen ebenen Bereich 24, der einen Großteil der Ausformung 14 bildet. Die Sichtscheibe 12 kann zusätzlich eine wärmereflektierende Beschichtung und/oder eine geeignete, die Durchsichtigkeit der Scheibe gezielt verhindernde Bedruckung aufweisen.According to the invention, the lens 12 is cup-shaped and has a shape 14 pointing in the direction of the cooking space 11, which extends over a large part of the opening 13 of the cooking space 11, and laterally a distance 15 of 2 mm, downwards a distance 17 of 2 mm and after has a distance 18 of 4 mm to the contact flange 16 at the top. The small distances 15, 17, 18 to the contact flange 16 result in an advantageous labyrinth effect to the outside with regard to dirt components and heat or hot gases. The formation 14 has a depth 19 of 30 mm and side flanks 21 with an angle 23 of 70 ° and flanks 20 on their top and bottom with an angle 22 of 80 °. After its flanks 20, 21, the formation 14 has a flat region 24, which forms a large part of the formation 14. The viewing pane 12 can additionally have a heat-reflecting coating and / or a suitable printing which specifically prevents the transparency of the pane.
Die Ausformung 14 ist an die Sichtscheibe 12 angeformt. Die Sichtscheibe 12 wird dabei in einem ersten Schritt auf eine Platte mit einer der Ausformung entsprechenden Einbuch- tung gelegt und in ihrem Flankenbereich durch Hitzequellen erwärmt, bis sich ein fließfähiger Zustand einstellt. Anschließend wird in einem zweiten Schritt der die Ausformung 14 bildende Bereich in die Einbuchtung der Platte durch Unterdruck eingesaugt. Die Sicht-
scheibe 12 ist aus Borosilikatglas und ist an ihrer Oberfläche thermisch mit Druckspannungen vorgespannt.The shape 14 is molded onto the lens 12. In a first step, the viewing window 12 is placed on a plate with an indentation corresponding to the shape and is heated in its flank area by heat sources until a flowable state occurs. Subsequently, in a second step, the area forming the formation 14 is sucked into the indentation of the plate by negative pressure. The view- pane 12 is made of borosilicate glass and is thermally prestressed with compressive stresses on its surface.
Neben der inneren Sichtscheibe 12 besitzt die Backofentür zwei weitere Sichtscheiben 25, 30, und zwar eine mittlere Sichtscheibe 25 und eine dem Garraum 11 abgewandte äußere Sichtscheibe 30. Die Sichtscheiben 12, 25, 30 sind über einen nicht näher dargestellten Träger zusammengehalten und über Kunststoffdichtungen 31, 32 nahezu luftdicht miteinander verbunden. Die mittlere Sichtscheibe 25 besitzt eine in die vom Garraum 11 abgewandte Richtung weisende Ausformung 26, die ca. dieselbe Höhe und Breite aufweist wie die Ausformung 14. Durch die Ausformung 14 und die Ausformung 26 ergibt sich ein vorteilhafter Isolierraum 33 zwischen den Sichtscheiben 12, 25. Die mittlere Sichtscheibe kann alternativ auch vollkommen flach ausgebildet sein oder bei verringerten Temperaturanforderungen entfallen.
In addition to the inner window 12, the oven door has two further windows 25, 30, namely a middle window 25 and an outer window 30 facing away from the cooking chamber 11. The windows 12, 25, 30 are held together by a carrier (not shown) and by plastic seals 31 , 32 almost airtight. The middle viewing pane 25 has a shape 26 pointing in the direction facing away from the cooking space 11, which has approximately the same height and width as the shape 14. The shape 14 and the shape 26 result in an advantageous insulating space 33 between the viewing panes 12, 25 The middle lens can alternatively also be completely flat or can be omitted if the temperature requirements are reduced.
Bezugszeichenreference numeral
Gehäusecasing
Garraumoven
SichtscheibeWindow
Öffnungopening
Ausformungformation
Abstanddistance
Anlageflanschabutment
Abstanddistance
Abstanddistance
Tiefedepth
Flankeflank
Flankeflank
Winkelangle
Winkelangle
BereichArea
SichtscheibeWindow
Ausformungformation
Kontaktflächecontact area
Muffelmuffle
Silikondichtungsilicone packing
SichtscheibeWindow
Dichtungpoetry
Dichtungpoetry
Isolierraum
isolation room
Claims
1. Gargerätetür, die an ihrer zu einem in einem Gehäuse (10) eines Gargeräts angeordneten Garraum (11) weisenden Seite eine Sichtscheibe (12) aufweist, die eine Öffnung (13) des Garraums (1 ) vollständig überdeckt und eine Kontaktfläche (27) zu einem Anlageflansch (16) bildet, dadurch gekennzeichnet, daß die Sichtscheibe (12) in zumindest einem Bereich eine in Richtung Garraum (11) weisende Ausformung (14) aufweist.1. Cooking appliance door, which on its side facing a cooking chamber (11) arranged in a housing (10) of a cooking appliance has a viewing window (12) which completely covers an opening (13) of the cooking chamber (1) and a contact surface (27) to form a contact flange (16), characterized in that the viewing window (12) has in at least one region a shape (14) pointing in the direction of the cooking space (11).
2. Gargerätetür nach Anspruch 1, dadurch gekennzeichnet, daß die Sichtscheibe2. Cooking appliance door according to claim 1, characterized in that the viewing window
(12) nur eine Ausformung (14) aufweist, die sich über einen Großteil der Öffnung(12) has only one formation (14), which extends over a large part of the opening
(13) des Garraums (11) erstreckt.(13) of the cooking space (11) extends.
3. Gargerätetür nach Anspruch 2, dadurch gekennzeichnet, daß die Ausformung (14) seitlich einen Abstand (15) zum Anlageflansch (16) kleiner als 4 mm aufweist.3. Cooking appliance door according to claim 2, characterized in that the shape (14) laterally has a distance (15) to the contact flange (16) less than 4 mm.
4. Gargerätetür nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Ausformung (14) nach unten einen Abstand (17) zum Anlageflansch (16) kleiner als 4 mm aufweist.4. Cooking appliance door according to claim 2 or 3, characterized in that the shape (14) has a distance (17) downwards to the contact flange (16) less than 4 mm.
5. Gargerätetür nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Ausformung (14) nach oben einen Abstand (18) zum Anlageflansch (16) kleiner als 6 mm aufweist.5. Cooking appliance door according to one of claims 2 to 4, characterized in that the shape (14) has a distance (18) upwards to the contact flange (16) less than 6 mm.
6. Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, üa& die Ausformung (14) eine Tiefe (19) zwischen 10 und 35 mm aufweist.6. Cooking appliance door according to one of the preceding claims, characterized in that the shape (14) has a depth (19) of between 10 and 35 mm.
7. Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ausformung (14) Flanken (20, 21) mit einem Winkel (22, 23) zwischen 90° und 55° aufweist. 7. Cooking appliance door according to one of the preceding claims, characterized in that the shape (14) has flanks (20, 21) with an angle (22, 23) between 90 ° and 55 °.
8. Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Sichtscheibe (12) vorgespannt ist.8. Cooking appliance door according to one of the preceding claims, characterized in that the viewing window (12) is biased.
9. Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekenn- zeichnet, daß die Sichtscheibe (12) aus Borsilikatglas ist.9. Cooking appliance door according to one of the preceding claims, characterized in that the viewing window (12) is made of borosilicate glass.
10. Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ausformung (14) zumindest einen ebenen Bereich (24) aufweist.10. Cooking appliance door according to one of the preceding claims, characterized in that the shape (14) has at least one flat region (24).
11 Gargerätetür nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf einer vom Garraum (11) abgewandten Seite der Sichtscheibe (12) eine zweite Sichtscheibe (25) angeordnet ist, die eine in die vom Garraum (11) abgewandte Richtung weisende Ausformung (26) aufweist.11 Cooking appliance door according to one of the preceding claims, characterized in that on a side of the viewing pane (12) facing away from the cooking space (11) a second viewing pane (25) is arranged which has a shape (26) pointing in the direction facing away from the cooking space (11) ) having.
12. Gargerät mit einem in einem Gehäuse (10) angeordneten Garraum (11), der über eine Gargerätetür verschließbar ist, die an ihrer zum Garraum (11) weisenden Seite eine Sichtscheibe (12) aufweist, die eine Öffnung (13) des Garraums (11) vollständig überdeckt und eine Kontaktfläche (27) zu einem Anlageflansch (16) bildet, dadurch gekennzeichnet, daß die Sichtscheibe (12) in zumindest einem12. Cooking appliance with a cooking chamber (11) arranged in a housing (10), which can be closed via a cooking appliance door that has a viewing window (12) on its side facing the cooking chamber (11), which has an opening (13) in the cooking chamber ( 11) completely covered and forms a contact surface (27) to a contact flange (16), characterized in that the viewing window (12) in at least one
Bereich eine in Richtung Garraum (11) weisende Ausformung (14) aufweist.Area has a molding (14) pointing in the direction of the cooking space (11).
13. Gargerät nach Anspruch 12, dadurch gekennzeichnet, daß im Gehäuse (10) eine thermische Selbstreinigungseinheit angeordnet ist. 13. Cooking appliance according to claim 12, characterized in that a thermal self-cleaning unit is arranged in the housing (10).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10050609A DE10050609A1 (en) | 2000-10-12 | 2000-10-12 | Oven door for cooker compartment opening, has contact surface with flange, recesses and two windows |
| DE10050609 | 2000-10-12 | ||
| PCT/EP2001/011476 WO2002031410A1 (en) | 2000-10-12 | 2001-10-04 | Cooking device door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1328762A1 true EP1328762A1 (en) | 2003-07-23 |
| EP1328762B1 EP1328762B1 (en) | 2007-05-30 |
Family
ID=7659562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01986756A Expired - Lifetime EP1328762B1 (en) | 2000-10-12 | 2001-10-04 | Cooking device door |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060180141A1 (en) |
| EP (1) | EP1328762B1 (en) |
| AT (1) | ATE363632T1 (en) |
| AU (1) | AU2002221652A1 (en) |
| DE (2) | DE10050609A1 (en) |
| ES (1) | ES2286155T3 (en) |
| WO (1) | WO2002031410A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10149085B4 (en) | 2001-10-05 | 2005-09-22 | Schott Ag | oven door |
| DE10239180A1 (en) * | 2002-08-21 | 2004-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Cooking chamber door of a cooking oven with pyrolysis function |
| DE10304281B4 (en) * | 2003-02-03 | 2019-05-09 | BSH Hausgeräte GmbH | oven door |
| US7597938B2 (en) * | 2004-11-29 | 2009-10-06 | Guardian Industries Corp. | Method of making coated article with color suppression coating including flame pyrolysis deposited layer(s) |
| DE102005040260A1 (en) * | 2005-08-24 | 2007-03-01 | Miele & Cie. Kg | Baking-oven door, has glass plates, where embossing, thermal expansion coefficient and adjustment of plates in frame for inclusion of air gap are selected such that distance remains constant or is increased during oven heating |
| US9455483B2 (en) | 2009-12-01 | 2016-09-27 | Schlumberger Technology Corporation | Pre-stressed gamma densitometer window and method of fabrication |
| CN104272028A (en) * | 2012-05-03 | 2015-01-07 | 伊莱克斯家用产品股份有限公司 | An arrangement of glass panels for a heat insulated oven door for a cooking oven |
| WO2015151039A1 (en) * | 2014-04-03 | 2015-10-08 | Indesit Company S.P.A. | Cooking appliance comprising thermochromic elements for providing an indication about: the temperature |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US99339A (en) * | 1870-02-01 | Benjamin nott | ||
| US248808A (en) * | 1881-10-25 | Island | ||
| US1009814A (en) * | 1911-01-21 | 1911-11-28 | Oswald Wegner | Stove door or window. |
| US1393235A (en) * | 1919-05-10 | 1921-10-11 | Mitrovich Adolph | Glass |
| US1519057A (en) * | 1923-06-29 | 1924-12-09 | Roberts & Mander Stove Company | Oven door |
| US1669604A (en) * | 1926-07-17 | 1928-05-15 | Moore Brothers Co | Hinged closure |
| US1700177A (en) * | 1927-12-05 | 1929-01-29 | Standard Electric Stove Compan | Oven front |
| US2172469A (en) * | 1939-04-28 | 1939-09-12 | Grigas Anthony | Transparent stove lid |
| US2325773A (en) * | 1940-07-18 | 1943-08-03 | Roper Corp Geo D | Oven observation window construction |
| US2341806A (en) * | 1941-05-05 | 1944-02-15 | Coleman Lamp & Stove Co | Door for floor furnaces and like heating appliances |
| US2394176A (en) * | 1944-06-14 | 1946-02-05 | Florence Stove Co | Oven door construction |
| US2604886A (en) * | 1949-04-12 | 1952-07-29 | Philco Corp | Insulated door |
| US3191240A (en) * | 1961-04-20 | 1965-06-29 | Slaman Albert | Multi-pane window panels |
| US4163444A (en) * | 1977-01-06 | 1979-08-07 | Les Industries Bfg Limitee | Door for pyrolytic range |
| US4253286A (en) * | 1978-10-26 | 1981-03-03 | Katona Joseph W | Clip-aire oven door window |
| CH633413A5 (en) * | 1978-11-08 | 1982-12-15 | Prometheus Ag Fabrik Elektrisc | Oven door with inspection window |
| DE3273772D1 (en) * | 1981-12-15 | 1986-11-20 | Weck J Gmbh & Co | Closure device for preservation jars |
| FR2561359B1 (en) * | 1984-01-17 | 1986-10-24 | Eurofours Sa | GLASS MOUNTING DEVICE FOR OVEN DOOR |
| FR2670563B1 (en) * | 1990-12-14 | 1996-04-05 | Europ Equip Menager | DOOR FOR DOMESTIC COOKING OVEN. |
| DE19638241A1 (en) | 1996-09-19 | 1998-03-26 | Miele & Cie | Oven with a device for pyrolytic self-cleaning |
| DE19705120A1 (en) * | 1997-02-11 | 1998-08-13 | Gaggenau Hausgeraete Gmbh | Oven door |
| DE19906901A1 (en) * | 1999-02-19 | 2000-08-24 | Kueppersbusch Hausgeraete Ag | Oven door comprises a glass pane provided with a fixing element which interacts with a complementary holding element at the door frame to fix the glass pane to the door frame |
| DE10143925A1 (en) * | 2001-09-07 | 2003-04-17 | Bsh Bosch Siemens Hausgeraete | Cooking appliance, cooking appliance door and method for producing a door pane for the cooking appliance door |
-
2000
- 2000-10-12 DE DE10050609A patent/DE10050609A1/en not_active Withdrawn
-
2001
- 2001-10-04 DE DE50112573T patent/DE50112573D1/en not_active Expired - Lifetime
- 2001-10-04 WO PCT/EP2001/011476 patent/WO2002031410A1/en active IP Right Grant
- 2001-10-04 AU AU2002221652A patent/AU2002221652A1/en not_active Abandoned
- 2001-10-04 AT AT01986756T patent/ATE363632T1/en not_active IP Right Cessation
- 2001-10-04 EP EP01986756A patent/EP1328762B1/en not_active Expired - Lifetime
- 2001-10-04 ES ES01986756T patent/ES2286155T3/en not_active Expired - Lifetime
-
2003
- 2003-04-14 US US10/413,018 patent/US20060180141A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0231410A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002031410A1 (en) | 2002-04-18 |
| AU2002221652A1 (en) | 2002-04-22 |
| ATE363632T1 (en) | 2007-06-15 |
| DE50112573D1 (en) | 2007-07-12 |
| ES2286155T3 (en) | 2007-12-01 |
| EP1328762B1 (en) | 2007-05-30 |
| US20060180141A1 (en) | 2006-08-17 |
| DE10050609A1 (en) | 2002-04-18 |
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