EP2818800B1 - Cooking appliance - Google Patents

Cooking appliance Download PDF

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Publication number
EP2818800B1
EP2818800B1 EP14001679.1A EP14001679A EP2818800B1 EP 2818800 B1 EP2818800 B1 EP 2818800B1 EP 14001679 A EP14001679 A EP 14001679A EP 2818800 B1 EP2818800 B1 EP 2818800B1
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EP
European Patent Office
Prior art keywords
cooking appliance
appliance according
fan
region
intake
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.)
Not-in-force
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EP14001679.1A
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German (de)
French (fr)
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EP2818800A1 (en
Inventor
Harald Pörner
Hermann Fersterra
Christoph Walther
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Electrolux Home Products Corp NV
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Electrolux Home Products Corp NV
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Publication of EP2818800A1 publication Critical patent/EP2818800A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities

Definitions

  • the invention relates to a cooking appliance according to the preamble of claim 1.
  • Gareboards usually have a cooking chamber for cooking, for example, for baking or roasting of food. During the cooking process, cooking fumes are formed by burning, chemical decomposition, evaporation and / or sublimation of substances in the food.
  • the guards are a mixture of air and other gaseous substances, such as oil and grease vapors.
  • cooking appliances are known with a discharge channel, which is coupled to the cooking chamber.
  • a discharge channel In the discharge channel is a fan to suck the steam and bleed to the outside.
  • the suction region is divided by means of a separating device into a first suction section and into a second suction section, which are arranged one behind the other with respect to the flow direction.
  • the separation device according to the invention a plurality of through holes, wherein the size and / or number of through holes by means of two adjoining perforated plates which are mutually displaceable or rotatable and / or by variable coverage or superimposing their holes different holes or hole cross-sections, are adjustable or is.
  • the essence of the invention lies in the fact that the suction region of the diversion or Ausleitsystems is divided by a separator into two intake sections, wherein the separator has a plurality of through holes and adjusting the size or number of through holes can be realized by means of two adjacent perforated plates, which are mutually displaceable or are rotatable and release by variable coverage or superimposed their holes different holes or hole cross-sections.
  • the first intake section which adjoins the cooking chamber
  • the temperature is higher than in the second intake section, which extends between the Separator and the fan is located, and thus the fan is not exposed to a high temperature.
  • the energy consumption of the cooking appliance is reduced, since due to the separator less warm gas / air is sucked out of the oven.
  • the through holes are preferably arranged in the central region of the separating device.
  • the through holes are arranged exclusively in the central region of the separating device, in particular the perforated plate.
  • the size and / or the number of through holes is manually and / or automatically adjustable. This allows the operation of the cooking appliance to be optimized. Smaller or fewer through holes result in lower energy consumption and a lower temperature in the second intake section, blower and blow-out area. Larger or more through holes allow faster extraction of the exhaust air and the Gardampfungen ..
  • the speed or generally the delivery rate (delivery rate) of the blower can be manually and / or automatically adjustable. This also contributes to the fact that the operation of the cooking appliance can be optimized.
  • the size and / or number of through holes may be adjustable depending on the speed or capacity of the fan. This will reduce the size or adjust the number of through holes to the speed or capacity of the blower or adjust the resulting gas flow through both parameters total flow cross-section of the through holes on the one hand and fan power on the other hand.
  • the total cross-sectional area of the through-holes is between 0.1% and 10% of the cross-sectional area of the suction region in the region of the separating device.
  • the total cross-sectional area of the through-holes is between 0.3% and 3% of the cross-sectional area of the suction area in the region of the separating device.
  • the ratio of the volume or mass flows of suctioned from the cooking chamber and / or connected to the cooking chamber suction gas flow, in particular air and Gardämpfe (vapor, air) to blown out of the blower gas flow, in particular cooling air of the air supply means, and fumes and air the cooking chamber is in an advantageous embodiment between 0.05% and 10%, in particular between 0.1% and 6%, preferably between 0.3% and 6% set or adjustable.
  • the diversion channel can be provided as an exhaust air duct.
  • the diversion channel is provided for discharging gauze.
  • discharging the Gardämpfe is prevented or at least limited that deposits are formed by condensing the Gardämpfe. As a result, a strong contamination of the cooking chamber is prevented.
  • the air supply device has at least one air supply opening.
  • the air supply opening can be realized for example by one or more slots in the housing of the second intake section. In this case, air is usually sucked from the outside through the interior of the cooking appliance, but from outside the cooking chamber.
  • the air supply device has at least one air supply channel.
  • the input of the air supply channel can be located on the outside of the cooking appliance.
  • the air supply duct and / or the blow-out area extend substantially horizontally. This allows a compact design of the cooking appliance with a relatively low design effort.
  • the air supply duct and / or the blow-out area extend above the cooking chamber.
  • the cooking appliance comprises a catalyst.
  • the catalyst causes a lowering of chemical reaction temperatures, so that a self-cleaning effect is achieved.
  • the catalyst is arranged in the first intake section.
  • the temperature is about as high as in the cooking chamber, so that the catalyst can fully develop its effect.
  • the fan is designed as a radial fan. This contributes to the compact design of the cooking appliance, since the suction and the discharge are perpendicular to each other.
  • the fan may be formed as a tangential fan.
  • the volume of the second intake section corresponds to at least about half the volume of the intake between the cooking chamber and the fan. This helps to make the section in front of the fan much colder than the cooking compartment.
  • the two intake sections are generally arranged one behind the other and there is no parallel division of the exhaust air flow.
  • FIG. 1 shows a representation of a first embodiment of a separator 20 of the cooking appliance according to the invention.
  • FIG. 1a shows a plan view
  • FIG. 1b a side view
  • 1c a sectional view
  • FIG. 1d a perspective view of the first embodiment of the separator 20.
  • the separator 20 has three round through holes 22.
  • the separator 20 is made of metal.
  • the separating device 20 is a curved round disk, which is essentially rotationally symmetrical.
  • FIG. 2 an illustration of a second embodiment of the separator 20 of the cooking appliance according to the invention is shown.
  • FIG. 2a shows a plan view and
  • FIG. 6b a perspective view of the second embodiment of the separator 20.
  • the second embodiment of the separator 20 is formed as a flat, round surface piece and has in the central region also three round through holes 22.
  • FIG. 3 is a partial sectional view of a first embodiment of a cooking appliance according to the invention shown.
  • the cooking appliance comprises a cooking chamber 10. At the top of the cooking chamber 10 is an opening which is coupled to a discharge channel.
  • the discharge channel comprises a suction region 12 and a blow-out region 14.
  • a blower 16 is located between the suction region 12 and the blow-out region 14.
  • the blower 16 is designed as a radial blower, which is driven by an electric motor 18.
  • the suction region 12 is divided into a first suction section 24 and a second suction section 26.
  • the first suction section 24 and the second suction section 26 are separated from each other by a perforated plate 20.
  • the perforated plate 20 has a plurality of through holes 22.
  • the through holes 22 are preferably located in the central region of the perforated plate 20.
  • the first suction section 24 is located immediately above the opening in the top of the cooking chamber 10.
  • the first suction section 24 is conical and widens along the flow direction.
  • the second suction section 26 is located between the perforated plate 20 and the blower 16. Above the blower 16 are air supply openings 28 for sucking air from the inside of the cooking oven.
  • the blow-out region 14 is formed as a horizontally extending channel.
  • the fan 16 causes exhaust air is sucked out of the cooking chamber 10.
  • the arrows in the drawings represent the flow directions.
  • the exhaust air flows from the cooking chamber 10 through the first suction section 24 vertically upwards against the perforated plate 20. Subsequently, the exhaust air flows through the through holes 22 upwards into the second suction section 26. Since cold air is sucked in via the air supply openings 28, the temperatures in the second suction section 26 are significantly lower than in the first suction section 24. As a result, the catalyst 32 in the first suction section 24 has ideal conditions. In the second intake section 26, the blower 16 is not exposed to high temperature.
  • FIG. 4 is a partial sectional view of a second embodiment of the cooking appliance according to the invention shown.
  • the second embodiment differs from the first embodiment according to FIG. 1 through an additional air supply channel 30.
  • the air supply channel 30 extends below the blow-out region 14.
  • the air supply channel 30 extends substantially parallel to the blow-out region 14.
  • the flow directions in the air supply channel 30 and in the blow-out region 14 are opposite.
  • the air supply channel 30 is provided for sucking air, wherein the air is usually at room temperature.
  • the entrance of the air supply channel 30 is located on the outside of the housing of the cooking appliance.
  • the air supply passage 30 has the same function as the air supply openings 28 in the embodiment according to FIG. 1 ,
  • FIG. 5 is a partial sectional view of a third embodiment of the cooking appliance according to the invention shown.
  • the third embodiment differs from the second embodiment essentially by the blower 36, which is designed as a tangential blower. Due to the shape of the tangential blower 36, the discharge channel is correspondingly higher in the third embodiment.
  • FIG. 6 is a perspective view of a cut half diverter of the first embodiment of the cooking appliance according to the invention shown.
  • FIG. 4 illustrates in particular the geometric properties of the diversion channel.
  • the diversion channel is arranged above the cooking chamber 10, not shown.
  • the first suction section 24 is located immediately above an opening in the upper wall of the cooking chamber 10.
  • the second suction section 26 is located immediately above the perforated plate 20.
  • the radial fan 16 is provided, which is not shown in this figure.
  • the radial blower 16 subdivides the interior of the diversion channel into the intake region 12 and the blow-out region 14, the intake region being composed of the first intake section 24 and the second intake section 26.
  • the height of the blow-off region 14 decreases along the flow direction. In contrast, the width of the blow-out region 14 increases along the flow direction.
  • the outlet 34 of the blow-out area 14 is formed as a horizontal longitudinal slot. Preferably, the output 34 is arranged above the feed opening of the cooking chamber.
  • the cooking appliance according to the invention is characterized in that the suction region 12 is subdivided by the separating device 20 into a first intake section 24 with a higher temperature and into a second intake section 26 with a lower temperature.
  • the catalyst arranged in the first intake section 24 is exposed to an ideal operating temperature.
  • the second intake section 26 downstream fan 16, however, is not exposed to high temperature.

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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)

Description

GargerätCooking appliance

Die Erfindung betrifft ein Gargerät gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a cooking appliance according to the preamble of claim 1.

Garöfen weisen üblicherweise einen Garraum zum Garen, beispielsweise zum Backen oder Braten von Gargut auf. Während des Garvorgangs bilden sich Gardämpfe durch Verbrennen, chemisches Zersetzen, Verdampfen und/oder Sublimieren von Substanzen im Gargut. Die Gardämpfe sind eine Mischung aus Luft und weiteren gasförmigen Substanzen, beispielsweise Öl- und Fettdämpfe.Gareboards usually have a cooking chamber for cooking, for example, for baking or roasting of food. During the cooking process, cooking fumes are formed by burning, chemical decomposition, evaporation and / or sublimation of substances in the food. The guards are a mixture of air and other gaseous substances, such as oil and grease vapors.

Wenn die Gardämpfe an kälteren Stellen des Gargerätes kondensieren, führt dies zu Ablagerungen. Der Garofen ist an diesen Stellen schwer zu reinigen. Auch am Sichtfenster in der Tür des Gargerätes kann es zu Ablagerungen kommen, durch die die Sicht in den Garraum behindert wird.If the cooking fumes condense on colder areas of the cooking appliance, this leads to deposits. The oven is difficult to clean in these places. Also on the window in the door of the cooking appliance can lead to deposits, which obstructs the view into the oven.

Um die Gardämpfe abführen zu können, sind Gargeräte mit einem Ausleitkanal bekannt, der mit dem Garraum gekoppelt ist. In dem Ausleitkanal befindet sich ein Gebläse, um die Gardämpfe abzusaugen und nach Außen zu blasen.To be able to remove the Gardämpfe, cooking appliances are known with a discharge channel, which is coupled to the cooking chamber. In the discharge channel is a fan to suck the steam and bleed to the outside.

Aus EP 0 598 211 A1 ist ein Backofen mit einer in einer Backofenwand vorgesehenen Wrasenöffnung, einem Strömungskanal, einem an ein Kühlluftgebläse angeschlossenen Kühlluft-Strömungsschacht und einer Drossel bekannt, wobei der Strömungsquerschnitt der Wrasenöffnung oder des anschließenden Strömungskanals durch die als Bimetall ausgebildete Drossel selbtstätig verschließbar ist.Out EP 0 598 211 A1 an oven with a provided in an oven wall Wrasenöffnung, a flow channel, a connected to a cooling air blower cooling air flow shaft and a throttle, wherein the flow cross-section of the Wrasenöffnung or the subsequent Flow channel by the bimetallic choke self-closing closable.

Es ist Aufgabe der Erfindung, ein Gargerät mit Gardampfabführung bereitzustellen, das einen geringeren Energieverbrauch und einen effizienteren Betrieb ermöglicht.It is an object of the invention to provide a cooking appliance with Gardampfabführung that allows lower energy consumption and more efficient operation.

Diese Aufgabe wird durch den Gegenstand gemäß dem Patentanspruch 1 gelöst.This object is achieved by the subject matter of claim 1.

Der Ansaugbereich ist mittels einer Trenneinrichtung in einen ersten Ansaugabschnitt und in einen zweiten Ansaugabschnitt unterteilt ist, die bezüglich der Strömungsrichtung hintereinander angeordnet sind. Dabei weist die Trenneinrichtung erfindungsgemäß eine Mehrzahl Durchgangslöcher auf, wobei die Größe und/oder Zahl der Durchgangslöcher mittels zweier aneinanderliegender Lochplatten, die zueinander verschiebbar oder drehbar sind und/oder durch variable Überdeckung oder Übereinanderliegen ihrer Löcher unterschiedliche Löcher oder Lochquerschnitte freigeben, einstellbar sind bzw. ist.The suction region is divided by means of a separating device into a first suction section and into a second suction section, which are arranged one behind the other with respect to the flow direction. In this case, the separation device according to the invention a plurality of through holes, wherein the size and / or number of through holes by means of two adjoining perforated plates which are mutually displaceable or rotatable and / or by variable coverage or superimposing their holes different holes or hole cross-sections, are adjustable or is.

Der Kern der Erfindung liegt also darin, dass der Ansaugbereich des Ausleitkanals oder Ausleitsystems mittels einer Trenneinrichtung in zwei Ansaugabschnitte unterteilt ist, wobei die Trenneinrichtung mehrere Durchgangslöcher aufweist und das Einstellen der Größe oder Zahl der Durchgangslöcher sich mittels zweier aneinanderliegender Lochplatten realisieren lässt, die zueinander verschiebbar oder drehbar sind und durch variable Überdeckung oder Übereinanderliegen ihrer Löcher unterschiedliche Löcher oder Lochquerschnitte freigeben. Dadurch ist im ersten Ansaugabschnitt, der sich an den Garraum anschließt, die Temperatur höher als im zweiten Ansaugabschnitt, der sich zwischen der Trenneinrichtung und dem Gebläse befindet, und somit das Gebläse nicht einer hohen Temperatur ausgesetzt. Auch der Energieverbrauch des Gargerätes wird verringert, da aufgrund der Trenneinrichtung weniger warmes Gas/Luft aus dem Garraum abgesaugt wird.The essence of the invention lies in the fact that the suction region of the diversion or Ausleitsystems is divided by a separator into two intake sections, wherein the separator has a plurality of through holes and adjusting the size or number of through holes can be realized by means of two adjacent perforated plates, which are mutually displaceable or are rotatable and release by variable coverage or superimposed their holes different holes or hole cross-sections. As a result, in the first intake section, which adjoins the cooking chamber, the temperature is higher than in the second intake section, which extends between the Separator and the fan is located, and thus the fan is not exposed to a high temperature. The energy consumption of the cooking appliance is reduced, since due to the separator less warm gas / air is sucked out of the oven.

Weiterhin sind die Durchgangslöcher bevorzugt im zentralen Bereich der Trenneinrichtung angeordnet. Vorzugsweise sind die Durchgangslöcher ausschließlich im zentralen Bereich der Trenneinrichtung, insbesondere der Lochplatte angeordnet.Furthermore, the through holes are preferably arranged in the central region of the separating device. Preferably, the through holes are arranged exclusively in the central region of the separating device, in particular the perforated plate.

Vorzugsweise ist die Größe und/oder die Zahl der Durchgangslöcher manuell und/oder automatisch einstellbar. Dadurch lässt sich der Betrieb des Gargerätes optimieren. Kleinere oder weniger Durchgangslöcher bewirken einen geringeren Energieverbrauch und eine niedrigere Temperatur im zweiten Ansaugabschnitt, Gebläse und Ausblasbereich. Größere oder mehr Durchgangslöcher ermöglichen ein schnelleres Absaugen der Abluft und der Gardämpfe..Preferably, the size and / or the number of through holes is manually and / or automatically adjustable. This allows the operation of the cooking appliance to be optimized. Smaller or fewer through holes result in lower energy consumption and a lower temperature in the second intake section, blower and blow-out area. Larger or more through holes allow faster extraction of the exhaust air and the Gardampfungen ..

Weiterhin kann die Drehzahl oder allgemein die Förderleistung (Förderrate) des Gebläses manuell und/oder automatisch einstellbar sein. Auch dies trägt dazu bei, dass der Betrieb des Gargerätes optimierbar ist.Furthermore, the speed or generally the delivery rate (delivery rate) of the blower can be manually and / or automatically adjustable. This also contributes to the fact that the operation of the cooking appliance can be optimized.

Außerdem kann die Größe und/oder Zahl der Durchgangslöcher in Abhängigkeit von der Drehzahl oder Förderleistung des Gebläses einstellbar sein. Dadurch lässt sich die Größe und/oder Zahl der Durchgangslöcher an die Drehzahl oder Förderleistung des Gebläses anpassen oder der resultierende Gasstrom durch beide Parameter Strömungsgesamtquerschnitt der Durchgangslöcher einerseits und Gebläseleistung andererseits einstellen.In addition, the size and / or number of through holes may be adjustable depending on the speed or capacity of the fan. This will reduce the size or adjust the number of through holes to the speed or capacity of the blower or adjust the resulting gas flow through both parameters total flow cross-section of the through holes on the one hand and fan power on the other hand.

Hinsichtlich der Abmessungen der Trenneinrichtung ist vorgesehen, dass die gesamte Querschnittsfläche der Durchgangslöcher zwischen 0,1 % und 10 % der Querschnittsfläche des Ansaugbereiches im Bereich der Trenneinrichtung beträgt. Insbesondere beträgt die gesamte Querschnittsfläche der Durchgangslöcher zwischen 0,3 % und 3 % der Querschnittsfläche des Ansaugbereiches im Bereich der Trenneinrichtung.With regard to the dimensions of the separating device, it is provided that the total cross-sectional area of the through-holes is between 0.1% and 10% of the cross-sectional area of the suction region in the region of the separating device. In particular, the total cross-sectional area of the through-holes is between 0.3% and 3% of the cross-sectional area of the suction area in the region of the separating device.

Das Verhältnis der Volumen- oder Masseströme von aus dem Garraum abgesaugter und/oder im mit dem Garraum verbundenen Ansaugbereich strömender Gasströmung, insbesondere Luft und Gardämpfe (Wrasen, Luft) zu aus dem Ausblasbereich ausgeblasener Gasströmung, insbesondere Kühlluft der Luftzufuhreinrichtung, und Wrasen und Luft aus dem Garraum, ist in einer vorteilhaften Ausführungsform zwischen 0,05 % und 10 %, insbesondere zwischen 0,1 % und 6 %, vorzugsweise zwischen 0,3 % und 6 % eingestellt oder einstellbar.The ratio of the volume or mass flows of suctioned from the cooking chamber and / or connected to the cooking chamber suction gas flow, in particular air and Gardämpfe (vapor, air) to blown out of the blower gas flow, in particular cooling air of the air supply means, and fumes and air the cooking chamber is in an advantageous embodiment between 0.05% and 10%, in particular between 0.1% and 6%, preferably between 0.3% and 6% set or adjustable.

Weiterhin kann der Ausleitkanal als Abluftkanal vorgesehen sein. Durch einen Luftaustausch wird beispielsweise der Sauerstoffanteil im Garraum verändert und der Garprozess beeinflusst. Insbesondere kann vorgesehen sein, dass der Ausleitkanal zum Abführen von Gardämpfen vorgesehen ist. Durch das Abführen der Gardämpfe wird verhindert oder zumindest eingeschränkt, dass durch Kondensieren der Gardämpfe Ablagerungen gebildet werden. Dadurch wird eine starke Verunreinigung des Garraumes verhindert.Furthermore, the diversion channel can be provided as an exhaust air duct. By exchanging air, for example, the oxygen content in the cooking chamber is changed and the cooking process is influenced. In particular, it can be provided that the diversion channel is provided for discharging gauze. By discharging the Gardämpfe is prevented or at least limited that deposits are formed by condensing the Gardämpfe. As a result, a strong contamination of the cooking chamber is prevented.

Zur Kühlung der Abluft und/oder Luft/Wrasen-Mischung kann vorgesehen sein, dass die Luftzufuhreinrichtung wenigstens eine Luftzufuhröffnung aufweist. Die Luftzufuhröffnung lässt sich beispielsweise durch einen oder mehrere Schlitze im Gehäuse des zweiten Ansaugabschnittes realisieren. Dabei wird Luft in der Regel aus dem Außenraum durch den Innenraum des Gargerätes, aber von außerhalb des Garraumes angesaugt.For cooling the exhaust air and / or air / vapor mixture it can be provided that the air supply device has at least one air supply opening. The air supply opening can be realized for example by one or more slots in the housing of the second intake section. In this case, air is usually sucked from the outside through the interior of the cooking appliance, but from outside the cooking chamber.

Alternativ dazu oder zusätzlich kann vorgesehen sein, dass der Luftzufuhreinrichtung wenigstens einen Luftzufuhrkanal aufweist. Dabei kann sich der Eingang des Luftzufuhrkanals an der Außenseite des Gargerätes befinden.Alternatively or additionally, it can be provided that the air supply device has at least one air supply channel. In this case, the input of the air supply channel can be located on the outside of the cooking appliance.

Vorzugsweise erstrecken sich der Luftzufuhrkanal und/oder der Ausblasbereich im Wesentlichen horizontal. Dies ermöglicht eine kompakte Bauweise des Gargerätes mit einem relativ geringen konstruktiven Aufwand. Insbesondere erstrecken sich der Luftzufuhrkanal und/oder der Ausblasbereich oberhalb des Garraumes.Preferably, the air supply duct and / or the blow-out area extend substantially horizontally. This allows a compact design of the cooking appliance with a relatively low design effort. In particular, the air supply duct and / or the blow-out area extend above the cooking chamber.

Bei der bevorzugten Ausführungsform kann vorgesehen sein, dass das Gargerät einen Katalysator aufweist. Der Katalysator bewirkt eine Herabsetzsetzung von chemischen Reaktionstemperaturen, so dass ein Selbstreinigungseffekt erreicht wird.In the preferred embodiment it can be provided that the cooking appliance comprises a catalyst. The catalyst causes a lowering of chemical reaction temperatures, so that a self-cleaning effect is achieved.

Vorzugsweise ist der Katalysator im ersten Ansaugabschnitt angeordnet. Im ersten Ansaugabschnitt ist die Temperatur etwa so hoch wie im Garraum, so dass der Katalysator seine Wirkung voll entfalten kann.Preferably, the catalyst is arranged in the first intake section. In the first intake section, the temperature is about as high as in the cooking chamber, so that the catalyst can fully develop its effect.

Bei der bevorzugten Ausführungsform ist das Gebläse als Radialgebläse ausgebildet. Dies trägt zur kompakten Bauweise des Gargerätes bei, da die Ansaugrichtung und die Ausblasrichtung senkrecht zueinander sind.In the preferred embodiment, the fan is designed as a radial fan. This contributes to the compact design of the cooking appliance, since the suction and the discharge are perpendicular to each other.

Alternativ kann das Gebläse als Tangentialgebläse ausgebildet sein.Alternatively, the fan may be formed as a tangential fan.

Insbesondere entspricht das Volumen des zweiten Ansaugabschnittes wenigstens etwa der Hälfte des Volumens des Ansaugbereiches zwischen dem Garraum und dem Gebläse. Dies trägt dazu bei, dass der Abschnitt vor dem Gebläse wesentlich kälter als der Garraum ist.In particular, the volume of the second intake section corresponds to at least about half the volume of the intake between the cooking chamber and the fan. This helps to make the section in front of the fan much colder than the cooking compartment.

Die beiden Ansaugabschnitte sind im Allgemeinen hintereinander angeordnet und es erfolgt keine parallele Aufteilung des Abluftstromes.The two intake sections are generally arranged one behind the other and there is no parallel division of the exhaust air flow.

Weitere Merkmale, Vorteile und besondere Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche.Further features, advantages and particular embodiments of the invention are the subject of the dependent claims.

Nachstehend wird das erfindungsgemäße Gargerät am Beispiel bevorzugter Ausführungsformen und unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. Es zeigen:

FIG 1
eine Darstellung einer ersten Ausführungsform einer Trenneinrichtung des Gargerätes gemäß der Erfindung; und
FIG 2
eine Darstellung einer zweiten Ausführungsform der Trenneinrichtung des Gargerätes gemäß der Erfindung.
FIG 3
eine Teilschnittansicht einer ersten Ausführungsform eines Gargerätes gemäß der Erfindung;
FIG 4
eine Teilschnittansicht einer zweiten Ausführungsform des Gargerätes gemäß der Erfindung;
FIG 5
eine Teilschnittansicht einer dritten Ausführungsform des Gargerätes gemäß der Erfindung;
FIG 6
eine Perspektivansicht eines aufgeschnittenen halben Ausleitkanals der ersten Ausführungsform des Gargerätes gemäß der Erfindung;
The cooking appliance according to the invention is explained in more detail below using the example of preferred embodiments and with reference to the accompanying drawings. Show it:
FIG. 1
a representation of a first embodiment of a separator of the cooking appliance according to the invention; and
FIG. 2
a representation of a second embodiment of the separator of the cooking appliance according to the invention.
FIG. 3
a partial sectional view of a first embodiment of a cooking appliance according to the invention;
FIG. 4
a partial sectional view of a second embodiment of the cooking appliance according to the invention;
FIG. 5
a partial sectional view of a third embodiment of the cooking appliance according to the invention;
FIG. 6
a perspective view of a cut half diverter of the first embodiment of the cooking appliance according to the invention;

FIG 1 zeigt eine Darstellung einer ersten Ausführungsform einer Trenneinrichtung 20 des Gargerätes gemäß der Erfindung. FIG 1a zeigt eine Draufsicht, FIG 1b eine Seitenansicht, FIG 1c eine Schnittansicht und FIG 1d eine Perspektivansicht der ersten Ausführungsform der Trenneinrichtung 20. Im zentralen Bereich weist die Trenneinrichtung 20 drei runde Durchgangslöcher 22 auf. Die Trenneinrichtung 20 ist aus Metall hergestellt. Die Trenneinrichtung 20 ist eine gewölbte runde Scheibe, die im Wesentlichen rotationssymmetrisch ausgebildet ist. FIG. 1 shows a representation of a first embodiment of a separator 20 of the cooking appliance according to the invention. FIG. 1a shows a plan view, FIG. 1b a side view, 1c a sectional view and FIG. 1d a perspective view of the first embodiment of the separator 20. In the central region, the separator 20 has three round through holes 22. The separator 20 is made of metal. The separating device 20 is a curved round disk, which is essentially rotationally symmetrical.

In FIG 2 ist eine Darstellung einer zweiten Ausführungsform der Trenneinrichtung 20 des Gargerätes gemäß der Erfindung dargestellt. FIG 2a zeigt eine Draufsicht und FIG 6b eine Perspektivansicht der zweiten Ausführungsform der Trenneinrichtung 20. Die zweite Ausführungsform der Trenneinrichtung 20 ist als ebenes rundes Flächenstück ausgebildet und weist im zentralen Bereich ebenfalls drei runde Durchgangslöcher 22 auf.In FIG. 2 an illustration of a second embodiment of the separator 20 of the cooking appliance according to the invention is shown. FIG. 2a shows a plan view and FIG. 6b a perspective view of the second embodiment of the separator 20. The second embodiment of the separator 20 is formed as a flat, round surface piece and has in the central region also three round through holes 22.

In FIG 3 ist eine Teilschnittansicht einer ersten Ausführungsform eines Gargerätes gemäß der Erfindung dargestellt. Das Gargerät umfasst einen Garraum 10. An der Oberseite des Garraumes 10 befindet sich eine Öffnung, die mit einem Ausleitkanal gekoppelt ist. Der Ausleitkanal umfasst einen Ansaugbereich 12 und einen Ausblasbereich 14. Zwischen dem Ansaugbereich 12 und dem Ausblasbereich 14 befindet sich ein Gebläse 16. In dieser Ausführungsform ist das Gebläse 16 als Radialgebläse ausgebildet, das von einem Elektromotor 18 angetrieben wird.In FIG. 3 is a partial sectional view of a first embodiment of a cooking appliance according to the invention shown. The cooking appliance comprises a cooking chamber 10. At the top of the cooking chamber 10 is an opening which is coupled to a discharge channel. The discharge channel comprises a suction region 12 and a blow-out region 14. A blower 16 is located between the suction region 12 and the blow-out region 14. In this embodiment, the blower 16 is designed as a radial blower, which is driven by an electric motor 18.

Der Ansaugbereich 12 ist in einen ersten Ansaugabschnitt 24 und in einen zweiten Ansaugabschnitt 26 unterteilt. Der erste Ansaugabschnitt 24 und der zweite Ansaugabschnitt 26 sind durch eine Lochplatte 20 voneinander getrennt. Die Lochplatte 20 weist eine Mehrzahl Durchgangslöcher 22 auf. Die Durchgangslöcher 22 befinden sind vorzugsweise im zentralen Bereich der Lochplatte 20. Der erste Ansaugabschnitt 24 befindet sich unmittelbar oberhalb der Öffnung in der Oberseite des Garraumes 10. Der erste Ansaugabschnitt 24 ist konisch ausgebildet und verbreitert sich entlang der Strömungsrichtung. Im ersten Ansaugabschnitt 24 befindet sich ein nicht dargestellter Katalysator 32. Der zweite Ansaugabschnitt 26 befindet sich zwischen der Lochplatte 20 und dem Gebläse 16. Oberhalb des Gebläses 16 befinden sich Luftzufuhröffnungen 28 zum Ansaugen von Luft aus dem Inneren des Garofens. Der Ausblasbereich 14 ist als ein horizontal verlaufender Kanal ausgebildet.The suction region 12 is divided into a first suction section 24 and a second suction section 26. The first suction section 24 and the second suction section 26 are separated from each other by a perforated plate 20. The perforated plate 20 has a plurality of through holes 22. The through holes 22 are preferably located in the central region of the perforated plate 20. The first suction section 24 is located immediately above the opening in the top of the cooking chamber 10. The first suction section 24 is conical and widens along the flow direction. The second suction section 26 is located between the perforated plate 20 and the blower 16. Above the blower 16 are air supply openings 28 for sucking air from the inside of the cooking oven. The blow-out region 14 is formed as a horizontally extending channel.

Das Gebläse 16 bewirkt, dass Abluft aus dem Garraum 10 abgesaugt wird. Die Pfeile in den Zeichnungen stellen die Strömungsrichtungen dar. Die Abluft strömt aus dem Garraum 10 durch den ersten Ansaugabschnitt 24 senkrecht nach oben gegen die Lochplatte 20. Anschließend strömt die Abluft durch die Durchgangslöcher 22 nach oben in den zweiten Ansaugabschnitt 26. Da über die Luftzufuhröffnungen 28 kalte Luft angesaugt wird, sind die Temperaturen im zweiten Ansaugabschnitt 26 deutlich niedriger als im ersten Ansaugabschnitt 24. Dadurch hat der Katalysator 32 im ersten Ansaugabschnitt 24 ideale Bedingungen. Im zweiten Ansaugabschnitt 26 wird das Gebläse 16 keiner zu hohen Temperatur ausgesetzt.The fan 16 causes exhaust air is sucked out of the cooking chamber 10. The arrows in the drawings represent the flow directions. The exhaust air flows from the cooking chamber 10 through the first suction section 24 vertically upwards against the perforated plate 20. Subsequently, the exhaust air flows through the through holes 22 upwards into the second suction section 26. Since cold air is sucked in via the air supply openings 28, the temperatures in the second suction section 26 are significantly lower than in the first suction section 24. As a result, the catalyst 32 in the first suction section 24 has ideal conditions. In the second intake section 26, the blower 16 is not exposed to high temperature.

In FIG 4 ist eine Teilschnittansicht einer zweiten Ausführungsform des Gargerätes gemäß der Erfindung dargestellt. Die zweite Ausführungsform unterscheidet sich von der ersten Ausführungsform gemäß FIG 1 durch einen zusätzlichen Luftzufuhrkanal 30. Der Luftzufuhrkanal 30 verläuft unterhalb des Ausblasbereiches 14. Der Luftzufuhrkanal 30 erstreckt sich im Wesentlichen parallel zum Ausblasbereich 14. Die Strömungsrichtungen im Luftzufuhrkanal 30 und im Ausblasbereich 14 sind entgegengerichtet. Der Luftzufuhrkanal 30 ist zum Ansaugen von Luft vorgesehen, wobei die Luft meist Raumtemperatur aufweist. Beispielsweise befindet sich der Eingang des Luftzufuhrkanals 30 an der Gehäuseaußenseite des Gargerätes. Der Luftzufuhrkanal 30 hat die gleiche Funktion wie die Luftzufuhröffnungen 28 bei der Ausführungsform gemäß FIG 1.In FIG. 4 is a partial sectional view of a second embodiment of the cooking appliance according to the invention shown. The second embodiment differs from the first embodiment according to FIG FIG. 1 through an additional air supply channel 30. The air supply channel 30 extends below the blow-out region 14. The air supply channel 30 extends substantially parallel to the blow-out region 14. The flow directions in the air supply channel 30 and in the blow-out region 14 are opposite. The air supply channel 30 is provided for sucking air, wherein the air is usually at room temperature. For example, the entrance of the air supply channel 30 is located on the outside of the housing of the cooking appliance. The air supply passage 30 has the same function as the air supply openings 28 in the embodiment according to FIG FIG. 1 ,

In FIG 5 ist eine Teilschnittansicht einer dritten Ausführungsform des Gargerätes gemäß der Erfindung dargestellt. Die dritte Ausführungsform unterscheidet sich von der zweiten Ausführungsform im Wesentlichen durch das Gebläse 36, das als Tangentialgebläse ausgebildet ist. Aufgrund der Form des Tangentialgebläses 36 ist der Ausleitkanal bei der dritten Ausführungsform entsprechend höher.In FIG. 5 is a partial sectional view of a third embodiment of the cooking appliance according to the invention shown. The third embodiment differs from the second embodiment essentially by the blower 36, which is designed as a tangential blower. Due to the shape of the tangential blower 36, the discharge channel is correspondingly higher in the third embodiment.

In FIG 6 ist eine Perspektivansicht eines aufgeschnittenen halben Ausleitkanals der ersten Ausführungsform des Gargerätes gemäß der Erfindung dargestellt. FIG 4 verdeutlicht insbesondere die geometrischen Eigenschaften des Ausleitkanals. Der Ausleitkanal ist oberhalb des nicht dargestellten Garraumes 10 angeordnet. Der erste Ansaugabschnitt 24 befindet sich unmittelbar oberhalb einer Öffnung in der oberen Wand des Garraumes 10. Der zweite Ansaugabschnitt 26 befindet sich unmittelbar oberhalb der Lochplatte 20.In FIG. 6 is a perspective view of a cut half diverter of the first embodiment of the cooking appliance according to the invention shown. FIG. 4 illustrates in particular the geometric properties of the diversion channel. The diversion channel is arranged above the cooking chamber 10, not shown. The first suction section 24 is located immediately above an opening in the upper wall of the cooking chamber 10. The second suction section 26 is located immediately above the perforated plate 20.

Oberhalb der Lochplatte 20 und des zweiten Ansaugabschnittes 26 ist das Radialgebläse 16 vorgesehen, das in dieser Abbildung nicht dargestellt ist. Durch das Radialgebläse 16 wird der Innenraum des Ausleitkanals in den Ansaugbereich 12 und den Ausblasbereich 14 unterteilt, wobei der Ansaugbereich sich aus dem ersten Ansaugabschnitt 24 und dem zweiten Ansaugabschnitt 26 zusammensetzt.Above the perforated plate 20 and the second intake section 26, the radial fan 16 is provided, which is not shown in this figure. The radial blower 16 subdivides the interior of the diversion channel into the intake region 12 and the blow-out region 14, the intake region being composed of the first intake section 24 and the second intake section 26.

Die Höhe des Ausblasbereiches 14 nimmt entlang der Strömungsrichtung ab. Dagegen nimmt die Breite des Ausblasbereiches 14 entlang der Strömungsrichtung zu. Der Ausgang 34 des Ausblasbereiches 14 ist als horizontaler Längsschlitz ausgebildet. Vorzugsweise ist der Ausgang 34 oberhalb der Beschickungsöffnung des Garraums angeordnet.The height of the blow-off region 14 decreases along the flow direction. In contrast, the width of the blow-out region 14 increases along the flow direction. The outlet 34 of the blow-out area 14 is formed as a horizontal longitudinal slot. Preferably, the output 34 is arranged above the feed opening of the cooking chamber.

Das erfindungsgemäße Gargerät zeichnet sich dadurch aus, dass durch die Trenneinrichtung 20 der Ansaugbereich 12 in einen ersten Ansaugabschnitt 24 mit höherer Temperatur und in einen zweiten Ansaugabschnitt 26 mit niedrigerer Temperatur unterteilt ist. Dadurch wird der im ersten Ansaugabschnitt 24 angeordnete Katalysator einer idealen Betriebstemperatur ausgesetzt. Das dem zweiten Ansaugabschnitt 26 nachgeschaltete Gebläse 16 wird dagegen keiner zu hohen Temperatur ausgesetzt. Durch die Trenneinrichtung 20 wird insbesondere der Energieverbrauch des Gargerätes verringert. The cooking appliance according to the invention is characterized in that the suction region 12 is subdivided by the separating device 20 into a first intake section 24 with a higher temperature and into a second intake section 26 with a lower temperature. As a result, the catalyst arranged in the first intake section 24 is exposed to an ideal operating temperature. The second intake section 26 downstream fan 16, however, is not exposed to high temperature. By the separator 20 is in particular reduces the energy consumption of the cooking appliance.

Claims (18)

  1. Cooking appliance comprising a cooking chamber (10), at least one fan (16), an intake region (12) which is coupled to the cooking chamber (10) and is connected upstream of the at least one fan (16), and an outlet region (14) which is connected downstream of the at least one fan (16), wherein the intake region (12) is subdivided into a first intake section (24) and into a second intake section (26) by means of a separating device (20), and the first intake section (24) and the second intake section (26) are arranged one behind the other with respect to the direction of flow,
    characterized in that
    the separating device (20) has a plurality of passage holes (22), and the size and/or number of the passage holes (22) can be adjusted by means of two perforated plates which bear against one another, which can be displaced or rotated in relation to one another and/or open different holes or hole cross sections by the holes in the said two perforated plates being covered or overlapping in a variable manner.
  2. Cooking appliance according to Claim 1,
    characterized in that
    at least some of the passage holes (22) are arranged in the central region of the separating device (20), or the passage holes (22) are arranged exclusively in the central region of the separating device (20), in particular of the perforated plate (20).
  3. Cooking appliance according to either of the preceding claims,
    characterized in that
    the size and/or number of the passage holes (22) can be manually and/or automatically adjusted.
  4. Cooking appliance according to one of the preceding claims,
    characterized in that
    the rotation speed or output capacity of the at least one fan (16) can be manually and/or automatically adjusted.
  5. Cooking appliance according to one of the preceding claims,
    characterized in that
    the size and/or number of the passage holes (22) can be adjusted depending on the rotation speed or output capacity of the at least one fan (16).
  6. Cooking appliance according to one of the preceding claims,
    characterized in that
    the total cross-sectional area of the passage holes (22) is between 0.05% and 10%, in particular between 0.1% and 6%, preferably between 0.3% and 6%, of the cross-sectional area of the intake region (12) in the region of the separating device (20).
  7. Cooking appliance according to one of the preceding claims,
    characterized in that
    the ratio of the volume or mass flows of the gas stream which is drawn in from the cooking chamber to the gas stream which is blown out from the outlet region is adjusted or can be adjusted to between 0.05% and 10%, in particular between 0.1% and 6%, preferably between 0.3% and 6%.
  8. Cooking appliance according to one of the preceding claims,
    characterized in that
    the intake region (12) and the outlet region (14) form an exhaust channel which is preferably provided as a discharge-air channel and/or for discharging cooking vapours.
  9. Cooking appliance according to one of the preceding claims, having an air supply device (28; 30) which is coupled to the said intake region (12) or to a further intake region which is coupled to the intake side of the at least one fan.
  10. Cooking appliance according to Claim 9,
    characterized in that
    the air supply device (28; 30) has at least one air supply opening (28).
  11. Cooking appliance according to Claim 9 or 10,
    characterized in that
    the at least one air supply device (28; 30) has at least one air supply channel (30).
  12. Cooking appliance according to Claim 11,
    characterized in that
    the at least one air supply channel (30) extends substantially horizontally.
  13. Cooking appliance according to one of the preceding claims,
    characterized in that
    the outlet region (14) extends substantially horizontally.
  14. Cooking appliance according to one of the preceding claims,
    characterized in that
    the cooking appliance has a catalyst (32).
  15. Cooking appliance according to Claim 14,
    characterized in that
    the catalyst (32) is arranged in the first intake section (24).
  16. Cooking appliance according to one of Claims 1 to 15,
    characterized in that
    the at least one fan (16) is in the form of a radial fan.
  17. Cooking appliance according to one of Claims 1 to 15,
    characterized in that
    the at least one fan (16) is in the form of a tangential fan.
  18. Cooking appliance according to one of the preceding claims,
    characterized in that
    the volume of the second intake section (26) corresponds to at least approximately half of the volume of the intake region (12) between the cooking chamber (10) and the at least one fan (16).
EP14001679.1A 2005-01-28 2005-11-23 Cooking appliance Not-in-force EP2818800B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005003975A DE102005003975A1 (en) 2005-01-28 2005-01-28 Cooking appliance
EP05025516.5A EP1686322B1 (en) 2005-01-28 2005-11-23 Cooking appliance

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP05025516.5A Division EP1686322B1 (en) 2005-01-28 2005-11-23 Cooking appliance

Publications (2)

Publication Number Publication Date
EP2818800A1 EP2818800A1 (en) 2014-12-31
EP2818800B1 true EP2818800B1 (en) 2017-06-07

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Application Number Title Priority Date Filing Date
EP14001679.1A Not-in-force EP2818800B1 (en) 2005-01-28 2005-11-23 Cooking appliance
EP05025516.5A Not-in-force EP1686322B1 (en) 2005-01-28 2005-11-23 Cooking appliance

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05025516.5A Not-in-force EP1686322B1 (en) 2005-01-28 2005-11-23 Cooking appliance

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EP (2) EP2818800B1 (en)
DE (1) DE102005003975A1 (en)
ES (1) ES2487141T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006039130A1 (en) * 2006-08-21 2008-02-28 BSH Bosch und Siemens Hausgeräte GmbH Gargerätevorrichtung
EP1855058B1 (en) * 2006-08-24 2017-04-19 V-Zug AG Process and apparatus to cook dishes with vapour
ITTO20130849A1 (en) 2013-10-18 2015-04-19 Indesit Co Spa DOMESTIC COOKING APPLIANCE
DE102014203531A1 (en) * 2014-02-27 2015-08-27 BSH Hausgeräte GmbH Cooking appliance with a specific cooling of a lighting device
DE102017220234A1 (en) 2017-11-14 2019-05-16 BSH Hausgeräte GmbH Cooking device with specific steam discharge device
DE102021209455A1 (en) 2021-08-27 2023-03-02 BSH Hausgeräte GmbH Closing device and cooking appliance with closing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2657267A1 (en) * 1976-12-17 1978-06-22 British Gas Corp Gas heated forced convection oven - has venturi channel under cooking compartment with burner discharging into narrowest point
DE3516847C3 (en) * 1985-05-10 1995-02-23 Miele & Cie Electric stove with a catalyst
DE3741975A1 (en) * 1987-12-11 1989-06-22 Buderus Kuechentechnik DEVICE FOR CONTROLLING A STEAM-OPERATED COOKING DEVICE AND DEVICE FOR OPERATING SUCH A DEVICE
BE1005701A3 (en) * 1991-02-11 1993-12-21 Atag Plan 3 B V Convection oven.
FR2688297B1 (en) * 1992-03-03 1999-07-30 Europ Equip Menager ELECTRIC HOUSEHOLD COOKING APPARATUS, IN PARTICULAR OVENS OR COOKERS COMPRISING A DEPRESSION DEVICE.
DE4238660C2 (en) * 1992-11-16 1994-09-01 Bosch Siemens Hausgeraete Oven, in particular with a device for pyrolytic self-cleaning
SE503682C2 (en) * 1994-11-17 1996-07-29 Sveba Dahlen Ab Device for steam generating in ovens
DE19638665A1 (en) * 1996-09-20 1998-03-26 Bosch Siemens Hausgeraete Oven with a catalyst
DE19831087A1 (en) * 1998-07-10 2000-01-13 Bsh Bosch Siemens Hausgeraete Oven with blower assisted circulation promoting more uniform heating and browning even at lower air flow rates
DE29821158U1 (en) * 1998-11-26 2000-03-30 Aeg Hausgeraete Gmbh Oven with cooling and vapor removal
DE102004003409A1 (en) * 2004-01-23 2005-08-18 Electrolux Schwanden Ag Multi purpose air circulation system for food processing ovens has a single fan and various ducts and openings to circulate, cool or extract air from the oven

Also Published As

Publication number Publication date
EP1686322A2 (en) 2006-08-02
DE102005003975A1 (en) 2006-08-03
EP2818800A1 (en) 2014-12-31
EP1686322A3 (en) 2011-06-08
ES2487141T3 (en) 2014-08-20
EP1686322B1 (en) 2014-05-14

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