EP0615097B1 - Electric household cooking appliance such as an oven, a cooking range or the like - Google Patents

Electric household cooking appliance such as an oven, a cooking range or the like Download PDF

Info

Publication number
EP0615097B1
EP0615097B1 EP93400594A EP93400594A EP0615097B1 EP 0615097 B1 EP0615097 B1 EP 0615097B1 EP 93400594 A EP93400594 A EP 93400594A EP 93400594 A EP93400594 A EP 93400594A EP 0615097 B1 EP0615097 B1 EP 0615097B1
Authority
EP
European Patent Office
Prior art keywords
air
cooking
chamber
channel
cooking appliance
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.)
Expired - Lifetime
Application number
EP93400594A
Other languages
German (de)
French (fr)
Other versions
EP0615097A1 (en
Inventor
Jean THOMSON-CSF-S.C.P.I. Sauton
Monique THOMSON-CSF-S.C.P.I. Mergault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Europeenne De Fabrication D'enceintes Mi Cie
Brandt Cooking SAC
Brandt Industries SAS
Original Assignee
Compagnie Europeenne pour lEquipement Menager SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR9202492A priority Critical patent/FR2688297B1/en
Application filed by Compagnie Europeenne pour lEquipement Menager SA filed Critical Compagnie Europeenne pour lEquipement Menager SA
Priority to DE1993618130 priority patent/DE69318130T2/en
Priority to EP93400594A priority patent/EP0615097B1/en
Publication of EP0615097A1 publication Critical patent/EP0615097A1/en
Application granted granted Critical
Publication of EP0615097B1 publication Critical patent/EP0615097B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/006—Arrangements for circulation of cooling air

Definitions

  • the present invention relates to an improvement household appliances, especially household appliances such as oven, oven built-in, stove or similar.
  • the furnaces cooking for domestic use of the prior art comprise in generally a cooking chamber 1 or muffle intended to receive the dishes to be cooked.
  • This cooking chamber 1 is closed by a door 2. It is further mounted in a chassis 3 comprising generally insulation means not shown.
  • This centrifugal group 5 positioned in general behind the cooking chamber in the upper part of the chassis, sucks in the air circulating between enclosure 1 and the chassis 3. This air is sucked in from an air inlet 6 located in the lower part of the chassis 3.
  • the air thus sucked in is discharged into an evacuation channel 7 provided in the upper part of the chassis between the block 1 and the part closed by the strip 4, as shown in the figures.
  • an evacuation channel 7 provided in the upper part of the chassis between the block 1 and the part closed by the strip 4, as shown in the figures.
  • the cooking chamber is closed by a door, it is necessary to create air circulation inside this enclosure to evacuate the gaseous effluents produced during the cooking meals or during pyrolysis operation in the case of a pyrolytic oven.
  • this air circulation is carried out thanks to a natural convection air inlet located in lower part of the enclosure or muffle.
  • This air inlet can be made in the rear wall of the cooking chamber, as represented by the reference 8 in FIG. 1 or by a local absence of seal 10 at the door, as shown by reference 11 in Figure 2.
  • the output air is carried out in the upper part of the cooking chamber by a opening 12, the air being sucked in by the centrifugal group 5 which creates a draft and evacuate it through the evacuation channel 7.
  • This type of structure has a number of drawbacks.
  • the creation of gaseous effluents causes a pressure inside the enclosure cooking 1.
  • This pressurization results in not evacuate all the fumes through the air outlet opening (s) such as the orifice 12.
  • this pressurization can cause problems of leaks and fumes may escape through holes not perfectly watertight such as door seals or holes made in the enclosure, especially for the passage of thermostats, rotisserie or other similar items.
  • the oven is brought to a high temperature, especially during pyrolysis, the gaseous effluents which escape from the oven, cause a tingling sensation in the eyes, nose or throat.
  • the object of the present invention is to remedy, in particular, the disadvantages mentioned above.
  • the present invention relates to a cooking appliance household appliance comprising a cooking enclosure for receiving meals to cook, means to create a depression and circulation air without air recycling characterized in that they comprise a group, centrifugal sending air through an air inlet channel opening into the enclosure and associated with an air extraction channel connected to the enclosure, the air intake channel and the air extraction channel being separated from each other.
  • a household appliance as described above has many advantages. So setting enclosure depression prevents leakage of gaseous effluents outwards and thus eliminates all nuisances sensory and aggressive for materials.
  • the association of the vacuum device with the means allowing air circulation inside the enclosure allows a rapid exchange of air inside the cooking chamber, which has advantageous effects.
  • the fumes no longer stagnate inside the enclosure, and the depression in the cavity allows them to train with fats which therefore do not have time to settle.
  • the use of a single centrifugal group presents several advantages. Indeed, the construction of the oven is less expensive and the improvements brought by this invention are of minimal additional cost, especially for ovens already comprising a centrifugal group for cooling the components of the oven, because the same centrifugal unit can be used.
  • the use of a single centrifugal group solves problems due in particular to variations of the electrical supply voltage. In this case, the report between the air inlet and outlet flows in the enclosure remains the same regardless of variations in speeds.
  • the air inlet channel opens into the enclosure of cooking by at least one calibrated hole.
  • the channel air inlet opens into the cooking chamber at the or arch heating elements so that the air blown into the cooking chamber is very quickly brought to high temperature.
  • the air inlet channel is positioned between the rear wall of the enclosure and insulation provided in the chassis and opens into the enclosure below the vault element (s). With this construction, air is blown into the cooking chamber already hot.
  • the air extraction channel opens into the enclosure cooking by at least one calibrated hole.
  • the hole (s) calibrated are made, preferably, in the upper wall the cooking chamber to facilitate the evacuation of gaseous effluents.
  • the depressurization of the interior of the enclosure is made of the fact that the total section of the calibrated holes in the air intake channel is less than the total section of the calibrated hole (s) of the extraction channel of air.
  • a baking oven for household use consists, like the ovens of known art, a cooking chamber or muffle 1 intended to receive cooking dishes.
  • This enclosure is closed by a door 2.
  • the seal between door 2 and the cooking chamber 1 is produced by a seal 10 provided around the entire periphery of the front face of the enclosure.
  • the enclosure 1 is, in known manner, inserted into a chassis 3 made, for example, of sheet metal.
  • a strip 4 receiving, in general, the various oven control and display elements.
  • a group centrifugal 5 which is used for cooling, in particular, electrical or electronic circuits used for oven control.
  • This centrifugal group 5 receives fresh air which is sucked into the lower part of the chassis, for example by the opening 14 in the embodiment shown.
  • This air flows between the rear wall of the chassis 3 and the rear wall flask 1, as shown by the arrows 15. Then the air drawn by the turbine is normally sent in a channel exhaust air 7 which opens between the upper part of door 2 and the lower part of the strip.
  • the group centrifuge 5 is used to make a setting device depression of the cooking chamber 1 associated with means allowing air circulation inside said pregnant.
  • part 15 'of the air sucked in by the centrifugal group 5 is sent into an air inlet channel 13 produced, for example, by sheets and positioned in the upper part of the rear wall of the muffle 1 behind the centrifugal unit 5.
  • the rear wall of the muffle 1 has at least one hole 16 calibrated to allow air supplied into channel 13 to be blown inside the cooking chamber 1, as shown in the figure.
  • the hole or the air inlet holes 16 are positioned substantially at the level of the vault heating element (s) 17, so as to inject into the enclosure 1, an air jet which is very quickly brought to a temperature of the order of 100 to 300 ° C.
  • the gaseous effluents to the interior of the cooking chamber 1 are sucked in through the hole 18 produced in the upper wall of said enclosure.
  • the hole or the holes 18 are calibrated holes.
  • the section of the holes 18 is greater than the total section of hole (s) 16 so that the air outlet flow is always higher than the air flow entering the enclosure.
  • the air inlet channel 13a instead of opening out upper part at the level of the roof heating elements can lead into the lower part.
  • channel 13a is positioned between the rear wall of the muffle 1 and the insulation 21 used in this type of product.
  • the centrifugal group used in this invention is generally, as shown in the drawings, the centrifugal group already used for cooling the oven. Therefore, the additional cost added by the device of this invention is minimal.
  • the setting device oven vacuum works permanently after switching on with the oven powered and at the same time the centrifugal group.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)

Description

La présente invention concerne un perfectionnement aux appareils électroménagers, plus particulièrement aux appareils de cuisson électroménagers du type four, four encastrable, cuisinière ou similaire.The present invention relates to an improvement household appliances, especially household appliances such as oven, oven built-in, stove or similar.

Comme représenté sur les figures 1 et 2, les fours de cuisson à usage domestique de l'art antérieur comportent en général une enceinte de cuisson 1 ou moufle destinée à recevoir les mets à cuire. Cette enceinte de cuisson 1 est fermée par une porte 2. Elle est de plus montée dans un châssis 3 comportant généralement des moyens d'isolation non représentés. Un certain nombre de fours, notamment ceux incluant des composants électroniques nécessitant un refroidissement, comportent aussi un groupe centrifuge 5. Ce groupe centrifuge 5 positionné en général derrière l'enceinte de cuisson dans la partie haute du châssis, aspire l'air qui circule entre l'enceinte 1 et le châssis 3. Cet air est aspiré à partir d'une entrée d'air 6 se trouvant en partie basse du châssis 3. L'air ainsi aspiré est refoulé dans un canal d'évacuation 7 prévu dans la partie haute du châssis entre le moufle 1 et la partie fermée par le bandeau 4, comme représenté sur les figures. D'autre part, comme l'enceinte de cuisson est fermée par une porte, il est nécessaire de créer une circulation d'air à l'intérieur de cette enceinte pour évacuer les effluents gazeux produits lors de la cuisson des mets ou lors du fonctionnement en pyrolyse dans le cas d'un four pyrolytique.As shown in Figures 1 and 2, the furnaces cooking for domestic use of the prior art comprise in generally a cooking chamber 1 or muffle intended to receive the dishes to be cooked. This cooking chamber 1 is closed by a door 2. It is further mounted in a chassis 3 comprising generally insulation means not shown. Some number of ovens, especially those including components electronics requiring cooling, also include a centrifugal group 5. This centrifugal group 5 positioned in general behind the cooking chamber in the upper part of the chassis, sucks in the air circulating between enclosure 1 and the chassis 3. This air is sucked in from an air inlet 6 located in the lower part of the chassis 3. The air thus sucked in is discharged into an evacuation channel 7 provided in the upper part of the chassis between the block 1 and the part closed by the strip 4, as shown in the figures. On the other hand, as the cooking chamber is closed by a door, it is necessary to create air circulation inside this enclosure to evacuate the gaseous effluents produced during the cooking meals or during pyrolysis operation in the case of a pyrolytic oven.

Actuellement, cette circulation d'air est réalisée grâce à une entrée d'air en convection naturelle située en partie basse de l'enceinte ou moufle. Cette entrée d'air peut être réalisée dans la paroi arrière de l'enceinte de cuisson, comme représenté par la référence 8 sur la figure 1 ou par une absence locale de joint d'étanchéité 10 au niveau de la porte, comme représenté par la référence 11 sur la figure 2. Dans ce cas, la sortie d'air s'effectue dans la partie supérieure de l'enceinte de cuisson par une ouverture 12, l'air étant aspiré par le groupe centrifuge 5 qui permet de créer un tirage et de l'évacuer par le canal d'évacuation 7.Currently, this air circulation is carried out thanks to a natural convection air inlet located in lower part of the enclosure or muffle. This air inlet can be made in the rear wall of the cooking chamber, as represented by the reference 8 in FIG. 1 or by a local absence of seal 10 at the door, as shown by reference 11 in Figure 2. In this case, the output air is carried out in the upper part of the cooking chamber by a opening 12, the air being sucked in by the centrifugal group 5 which creates a draft and evacuate it through the evacuation channel 7.

Ce type de structure présente un certain nombre d'inconvénients. En effet, quand le four fonctionne, soit en cuisson, soit en pyrolyse, la création d'effluents gazeux provoque une mise en pression de l'intérieur de l'enceinte de cuisson 1. Cette mise en pression a pour conséquence de ne pas évacuer toutes les fumées par le ou les orifices de sortie d'air prévus tel que l'orifice 12. En fait, cette mise en pression peut engendrer des problèmes de fuites et les fumées risquent de sortir par des orifices non parfaitement étanches tels que les joints de porte ou les trous réalisés dans l'enceinte, notamment pour le passage des thermostats, du tournebroche ou autres éléments similaires. Ainsi, lorsque le four est porté à température élevée, notamment pendant une pyrolyse, les effluents gazeux qui s'échappent du four, provoquent une sensation de picotement des yeux, du nez ou de la gorge.This type of structure has a number of drawbacks. In indeed, when the oven is operating, either in cooking or in pyrolysis, the creation of gaseous effluents causes a pressure inside the enclosure cooking 1. This pressurization results in not evacuate all the fumes through the air outlet opening (s) such as the orifice 12. In fact, this pressurization can cause problems of leaks and fumes may escape through holes not perfectly watertight such as door seals or holes made in the enclosure, especially for the passage of thermostats, rotisserie or other similar items. When the oven is brought to a high temperature, especially during pyrolysis, the gaseous effluents which escape from the oven, cause a tingling sensation in the eyes, nose or throat.

On observe aussi un traitement incorrect des effluents gazeux, car l'enceinte de cuisson est sous-saturée en air. De plus, lors des cuissons ou d'une pyrolyse, les fumées non traitées, passant par les fuites , attaquent les pièces peintes et l'on observe, notamment, un jaunissement de la peinture.

  • Le document EP 0 154 595 décrit une enceinte de cuisson fonctionnant en dépression. L'entrée d'air dans l'enceinte de cuisson se fait par un canal d'air qui n'est pas associé à un groupe centrifuge.
  • Les documents US 2 862 095 et DE 3 516 847 décrivent un fonctionnement avec recyclage de l'air.
  • Le document EP 0 319 673 décrit un fonctionnement en surpression.
  • Le document DE 3 839 657 décrit un fonctionnement où le canal d'entrée d'air est associé à un premier groupe centrifuge et où le canal de sortie d'air est associé à un second groupe centrifuge.
There is also an incorrect treatment of the gaseous effluents, because the cooking chamber is undersaturated with air. In addition, during cooking or pyrolysis, the untreated fumes, passing through the leaks, attack the painted parts and there is, in particular, a yellowing of the paint.
  • The document EP 0 154 595 describes a cooking chamber operating under vacuum. The air entering the cooking chamber is through an air channel which is not associated with a centrifugal group.
  • Documents US 2,862,095 and DE 3,516,847 describe an operation with air recycling.
  • The document EP 0 319 673 describes an operation under overpressure.
  • Document DE 3,839,657 describes an operation in which the air inlet channel is associated with a first centrifugal group and in which the air outlet channel is associated with a second centrifugal group.

La présente invention a pour but de remédier, notamment, aux inconvénients mentionnés ci-dessus. The object of the present invention is to remedy, in particular, the disadvantages mentioned above.

Ainsi, la présente invention a pour objet un appareil de cuisson électroménager comportant une enceinte de cuisson pour recevoir les mets à cuire, des moyens permettant de créer une dépression et une circulation d'air sans recyclage de l'air caractérisé en ce qu'ils comportent un groupe, centrifuge envoyant de l'air dans un canal d'entrée d'air débouchant dans l'enceinte et associé à un canal d'extraction d'air connecté à l'enceinte, le canal d'entrée d'air et le canal d'extraction d'air étant séparés l'un de l'autre. Thus, the present invention relates to a cooking appliance household appliance comprising a cooking enclosure for receiving meals to cook, means to create a depression and circulation air without air recycling characterized in that they comprise a group, centrifugal sending air through an air inlet channel opening into the enclosure and associated with an air extraction channel connected to the enclosure, the air intake channel and the air extraction channel being separated from each other.

Un appareil de cuisson électroménager tel que décrit ci-dessus présente de nombreux avantages. Ainsi la mise en dépression de l'enceinte évite toute fuite des effluents gazeux vers l'extérieur et supprime ainsi toutes les nuisances sensorielles et agressives pour les matériaux. D'autre part, l'association du dispositif de mise en dépression avec les moyens permettant une circulation d'air à l'intérieur de l'enceinte permet un échange rapide d'air à l'intérieur de l'enceinte de cuisson, ce qui présente des effets avantageux. Ainsi, pendant la cuisson, on observe une faible émission de fumée, ce qui permet de conserver un four propre. En effet, les fumées ne stagnent plus à l'intérieur de l'enceinte, et la dépression dans la cavité permet de les entraíner avec les graisses qui n'ont donc pas le temps de se déposer. D'autre part, pendant la pyrolyse, on réalise un traitement très optimisé des effluents gazeux qui sont flltrés et évacués au fur et à mesure de leur émission.A household appliance as described above has many advantages. So setting enclosure depression prevents leakage of gaseous effluents outwards and thus eliminates all nuisances sensory and aggressive for materials. On the other hand, the association of the vacuum device with the means allowing air circulation inside the enclosure allows a rapid exchange of air inside the cooking chamber, which has advantageous effects. Thus, during cooking, there is a low emission of smoke, which keeps the oven clean. Indeed, the fumes no longer stagnate inside the enclosure, and the depression in the cavity allows them to train with fats which therefore do not have time to settle. Else part, during the pyrolysis, we carry out a very optimized gaseous effluents which are filtered and evacuated as and as they are broadcast.

L'utilisation d'un seul groupe centrifuge présente plusieurs avantages. En effet, la construction du four est moins onéreuse et les perfectionnements apportés par la présente invention sont d'un surcoût minime, notamment pour les fours comportant déjà un groupe centrifuge pour le refroidissement des composants du four, car le même groupe centrifuge peut être utilisé. D'autre part, l'utilisation d'un seul groupe centrifuge permet de résoudre les problèmes dûs notamment aux variations de la tension électrique d'alimentation. Dans ce cas, le rapport entre les débits d'entrée et de sortie de l'air dans l'enceinte de cuisson reste identique indépendamment des variations des vitesses.The use of a single centrifugal group presents several advantages. Indeed, the construction of the oven is less expensive and the improvements brought by this invention are of minimal additional cost, especially for ovens already comprising a centrifugal group for cooling the components of the oven, because the same centrifugal unit can be used. On the other hand, the use of a single centrifugal group solves problems due in particular to variations of the electrical supply voltage. In this case, the report between the air inlet and outlet flows in the enclosure remains the same regardless of variations in speeds.

Selon une autre caractéristique de la présente invention, le canal d'entrée d'air débouche dans l'enceinte de cuisson par au moins un trou calibré. De préférence, le canal d'entrée d'air débouche dans l'enceinte de cuisson au niveau du ou des éléments de chauffage de voûte de sorte que l'air insufflé dans l'enceinte de cuisson est très rapidement porté à une température élevée.According to another characteristic of the present invention, the air inlet channel opens into the enclosure of cooking by at least one calibrated hole. Preferably, the channel air inlet opens into the cooking chamber at the or arch heating elements so that the air blown into the cooking chamber is very quickly brought to high temperature.

Selon un autre mode de réalisation préférentiel, le canal d'entrée d'air est positionné entre la paroi arrière de l'enceinte et l'isolation prévu dans le châssis et débouche dans l'enceinte en dessous du ou des éléments de voûte. Avec cette construction, on insuffle dans l'enceinte de cuisson de l'air déjà chaud.According to another preferred embodiment, the air inlet channel is positioned between the rear wall of the enclosure and insulation provided in the chassis and opens into the enclosure below the vault element (s). With this construction, air is blown into the cooking chamber already hot.

Selon une autre caractéristique de la présente invention, le canal d'extraction d'air débouche dans l'enceinte de cuisson par au moins un trou calibré. Le ou les trous calibrés sont réalisés, de préférence, dans la paroi supérieure de l'enceinte de cuisson pour faciliter l'évacuation des effluents gazeux.According to another characteristic of the present invention, the air extraction channel opens into the enclosure cooking by at least one calibrated hole. The hole (s) calibrated are made, preferably, in the upper wall the cooking chamber to facilitate the evacuation of gaseous effluents.

D'autre part, la mise en dépression de l'intérieur de l'enceinte est réalisée du fait que la section totale du ou des trous calibrés du canal d'entrée d'air est inférieure à la section totale du ou des trous calibrés du canal d'extraction d'air.On the other hand, the depressurization of the interior of the enclosure is made of the fact that the total section of the calibrated holes in the air intake channel is less than the total section of the calibrated hole (s) of the extraction channel of air.

D'autres caractéristiques et avantages de la présente invention apparaítront à la lecture de la description des différents modes de réalisation, cette description étant faite ci-après avec référence aux dessins ci-annexés dans lesquels :

  • la figure 1 déjà décrite est une vue en coupe schématique d'un four de cuisson à usage domestique selon l'art antérieur ;
  • la figure 2 déjà décrite est une vue en coupe schématique d'un autre mode de réalisation d'un four de cuisson selon l'art antérieur ;
  • la figure 3 est une vue en coupe schématique d'un four de cuisson conforme à la présente invention ;
  • la figure 4 est une vue en perspective schématique de la partie essentielle du four représentée à la figure 3 ;
  • la figure 5 est une vue en perspective schématique d'un autre mode de réalisation d'un four de cuisson conforme à la présente invention.
Other characteristics and advantages of the present invention will appear on reading the description of the various embodiments, this description being made below with reference to the attached drawings in which:
  • Figure 1 already described is a schematic sectional view of a cooking oven for domestic use according to the prior art;
  • Figure 2 already described is a schematic sectional view of another embodiment of a cooking oven according to the prior art;
  • Figure 3 is a schematic sectional view of a cooking oven according to the present invention;
  • Figure 4 is a schematic perspective view of the essential part of the oven shown in Figure 3;
  • Figure 5 is a schematic perspective view of another embodiment of a cooking oven according to the present invention.

Pour simplifier la description dans les figures, les mêmes éléments portent les mêmes références. D'autre part, dans la description, on se réfère à un four de cuisson électroménager. Toutefois, il est évident pour l'homme de l'art que la présente invention peut s'appliquer à tous types d'appareils de cuisson du même genre tels que les fours encastrables, les cuisinières et similaires.To simplify the description in the figures, the same elements have the same references. On the other hand, in the description refers to a baking oven home appliance. However, it is obvious to those skilled in the art that the present invention can be applied to all types similar cooking appliances such as ovens built-in cookers and the like.

Comme représenté sur la figure 3, un four de cuisson à usage ménager conforme à la présente invention est constitué, comme les fours de l'art connu, d'une enceinte de cuisson ou moufle 1 destinée à recevoir les mets à cuire. Cette enceinte est fermée par une porte 2. L'étanchéité entre la porte 2 et l'enceinte de cuisson 1 est réalisée par un joint d'étanchéité 10 prévu sur tout le pourtour de la face avant de l'enceinte. L'enceinte 1 est, de manière connue, insérée dans un châssis 3 réalisé, par exemple, en tôle. Sur la face avant supérieure du châssis 3 est prévu un bandeau 4 recevant, en général, les différents éléments de commande et d'affichage du four. D'autre part, dans la partie supérieure du châssis 3 à l'extérieur du moufle ou de l'enceinte de cuisson 1 est monté un groupe centrifuge 5 qui est utilisé pour le refroidissement, notamment, des circuits électriques ou électroniques utilisés pour la commande du four. Ce groupe centrifuge 5 reçoit de l'air frais qui est aspiré dans la partie basse du châssis, par exemple par l'ouverture 14 dans le mode de réalisation représenté. Cet air circule entre la paroi arrière du châssis 3 et la paroi arrière du moufle 1, comme représenté par les flèches 15. Puis l'air aspiré par la turbine est envoyé normalement dans un canal d'évacuation d'air 7 qui débouche entre la partie supérieure de la porte 2 et la partie inférieure du bandeau.As shown in Figure 3, a baking oven for household use according to the present invention consists, like the ovens of known art, a cooking chamber or muffle 1 intended to receive cooking dishes. This enclosure is closed by a door 2. The seal between door 2 and the cooking chamber 1 is produced by a seal 10 provided around the entire periphery of the front face of the enclosure. The enclosure 1 is, in known manner, inserted into a chassis 3 made, for example, of sheet metal. On the upper front of the chassis 3 is provided a strip 4 receiving, in general, the various oven control and display elements. Else hand, in the upper part of the chassis 3 outside the muffle or cooking chamber 1 is mounted a group centrifugal 5 which is used for cooling, in particular, electrical or electronic circuits used for oven control. This centrifugal group 5 receives fresh air which is sucked into the lower part of the chassis, for example by the opening 14 in the embodiment shown. This air flows between the rear wall of the chassis 3 and the rear wall flask 1, as shown by the arrows 15. Then the air drawn by the turbine is normally sent in a channel exhaust air 7 which opens between the upper part of door 2 and the lower part of the strip.

Conformément à la présente invention, le groupe centrifuge 5 est utilisé pour réaliser un dispositif de mise en dépression de l'enceinte de cuisson 1 associé à des moyens permettant une circulation de l'air à l'intérieur de ladite enceinte. Ainsi, comme représenté sur la figure 3, une partie 15' de l'air aspiré par le groupe centrifuge 5 est envoyée dans un canal d'entrée d'air 13 réalisé, par exemple, par des tôles et positionné dans la partie haute de la paroi arrière du moufle 1 derrière le groupe centrifuge 5.In accordance with the present invention, the group centrifuge 5 is used to make a setting device depression of the cooking chamber 1 associated with means allowing air circulation inside said pregnant. Thus, as shown in FIG. 3, part 15 'of the air sucked in by the centrifugal group 5 is sent into an air inlet channel 13 produced, for example, by sheets and positioned in the upper part of the rear wall of the muffle 1 behind the centrifugal unit 5.

La paroi arrière du moufle 1 comporte au moins un trou calibré 16 pour permettre à l'air amené dans le canal 13 d'être insufflé à l'intérieur de l'enceinte de cuisson 1, comme représenté sur la figure.The rear wall of the muffle 1 has at least one hole 16 calibrated to allow air supplied into channel 13 to be blown inside the cooking chamber 1, as shown in the figure.

Dans le mode de réalisation des figures 3 et 4, le trou ou les trous d'entrée d'air 16 sont positionnés sensiblement au niveau du ou des éléments chauffants de voûte 17, de manière à insuffler dans l'enceinte 1, un jet d'air qui est très rapidement porté à une température de l'ordre de 100 à 300°C. Le jet d'air représenté par la flèche 15' circule à l'intérieur de l'enceinte. D'autre part, les effluents gazeux à l'intérieur de l'enceinte de cuisson 1 sont aspirés par le trou 18 réalisé dans la paroi supérieure de ladite enceinte. Le trou ou les trous 18 sont des trous calibrés. La section du ou des trous 18 est supérieure à la section totale du ou des trous 16 de telle sorte que le débit de sortie d'air soit toujours supérieur au débit d'entrée d'air dans l'enceinte. A titre d'exemple, dans un four à pyrolyse l'on a réalisé 7 trous d'entrée d'air de diamètre 3mm et 286 trous de sortie d'air de diamètre 2 mm. Le trou 18 débouche dans un canal d'extraction d'air 19 qui est dirigé vers le groupe centrifuge 5. Ce groupe extrait les effluents gazeux hors de l'enceinte de cuisson, comme représenté par la flèche 15", et les refoule vers le canal 7. Pour éviter que les effluents gazeux extraits dans le canal 19 ne soient réinjectés dans l'enceinte de cuisson 1, on prévoit, comme représenté sur la figure 4, une tôle de séparation 20 positionnée au dessus du canal de sortie d'air 7.In the embodiment of Figures 3 and 4, the hole or the air inlet holes 16 are positioned substantially at the level of the vault heating element (s) 17, so as to inject into the enclosure 1, an air jet which is very quickly brought to a temperature of the order of 100 to 300 ° C. The air jet represented by the arrow 15 'circulates at inside the enclosure. On the other hand, the gaseous effluents to the interior of the cooking chamber 1 are sucked in through the hole 18 produced in the upper wall of said enclosure. The hole or the holes 18 are calibrated holes. The section of the holes 18 is greater than the total section of hole (s) 16 so that the air outlet flow is always higher than the air flow entering the enclosure. As example, in a pyrolysis oven we made 7 holes air inlet diameter 3mm and 286 air outlet holes of diameter 2 mm. The hole 18 opens into an extraction channel of air 19 which is directed towards the centrifugal group 5. This group extracts gaseous effluents from the cooking chamber, as represented by the arrow 15 ", and pushes them back towards the channel 7. To prevent the gaseous effluents extracted in the canal 19 are reinjected into the cooking chamber 1, we provides, as shown in Figure 4, a sheet of partition 20 positioned above the air outlet channel 7.

Selon une variante de réalisation représentée sur la figure 5, le canal d'entrée d'air 13a au lieu de déboucher en partie haute au niveau des éléments de chauffage de voûte peut déboucher en partie basse. Dans ce cas, le canal 13a est positionné entre la paroi arrière la du moufle 1 et le calorifugeage 21 utilisé dans ce type de produit. De ce fait, l'air forcé à l'intérieur de l'enceinte de cuisson dans une position basse est déjà préchauffé, ce qui a pour avantage de permettre un échange thermique rapide sans augmenter la consommation d'énergie.According to an alternative embodiment shown in the Figure 5, the air inlet channel 13a instead of opening out upper part at the level of the roof heating elements can lead into the lower part. In this case, channel 13a is positioned between the rear wall of the muffle 1 and the insulation 21 used in this type of product. Thereby, the forced air inside the cooking chamber in a low position is already preheated, which has the advantage of allow rapid heat exchange without increasing the energy consumption.

On a décrit ci-dessus un mode de réalisation n'utilisant qu'un seul groupe centrifuge 5 pour forcer l'air à l'intérieur de l'enceinte de cuisson et pour l'en extraire. Toutefois, il est évident pour l'homme de l'art qu'il est possible d'utiliser deux groupes centrifuges séparés, l'un associé avec le canal d'entrée d'air 13 pour forcer l'air à l'intérieur de l'enceinte de cuisson 1, l'autre associé avec le canal d'extraction d'air 19 pour extraire l'air et les effluents gazeux hors de l'enceinte de cuisson 1. Cependant, comme mentionné ci-dessus, l'utilisation d'un seul groupe centrifuge présente plusieurs avantages, notamment au niveau du coût. D'autre part lorsque la tension du réseau électrique n'est pas identique, l'utilisation d'un seul groupe permet d'assurer une dépression permanente, les variations de vitesse jouant simultanément et de manière identique sur les débits d'entrée et de sortie de l'air hors de l'enceinte de cuisson.An embodiment has been described above. using only one centrifugal group 5 to force the air to inside the cooking chamber and to extract it. However, it is obvious to those skilled in the art that he is possible to use two separate centrifugal groups, one associated with the air inlet channel 13 to force the air to inside the cooking chamber 1, the other associated with the air extraction channel 19 for extracting air and effluents gaseous outside the cooking chamber 1. However, as mentioned above, the use of a single centrifugal group has several advantages, especially in terms of cost. On the other hand when the voltage of the electrical network is not identical, the use of a single group ensures a permanent depression, variations in speed playing simultaneously and identically on the input rates and air outlet from the cooking chamber.

De plus, le groupe centrifuge utilisé dans la présente invention est en général, comme représenté sur les dessins, le groupe centrifuge déjà utilisé pour le refroidissement du four. De ce fait, le surcoût ajouté par le dispositif de la présente invention est minime. D'autre part, le dispositif de mise en dépression du four fonctionne de manière permanente dès la mise sous tension du four et en même temps du groupe centrifuge.In addition, the centrifugal group used in this invention is generally, as shown in the drawings, the centrifugal group already used for cooling the oven. Therefore, the additional cost added by the device of this invention is minimal. On the other hand, the setting device oven vacuum works permanently after switching on with the oven powered and at the same time the centrifugal group.

Claims (8)

  1. Domestic electrical cooking appliance having a cooking chamber (1) for receiving the dishes to be cooked and means making it possible to create a partial vacuum and a flow of air without recycling the air, characterized in that they comprise a centrifugal unit (5) sending air into an air inlet channel (13) which runs out into the chamber and is associated with an air extraction channel (19) connected to the chamber (1), the air inlet channel (13) and the air extraction channel (19) being separated from each other.
  2. Cooking appliance according to Claim 1, characterized in that the air inlet channel (13) runs out into the cooking chamber (1) via at least one calibrated hole (16).
  3. Cooking appliance according to either of the preceding claims, characterized in that the air inlet channel (13) runs out into the chamber (1) level with the roof heating element or elements (17).
  4. Cooking appliance according to either of Claims 1 and 2, characterized in that the air inlet channel (13a) is positioned between the rear wall of the chamber (1) and the insulation, and runs out into the chamber below the roof heating element or elements (17).
  5. Cooking appliance according to any one of the preceding claims, characterized in that the air extraction channel (19) runs out into the cooking chamber (1) via at least one calibrated hole (18).
  6. Cooking appliance according to Claim 5, characterized in that the calibrated hole or holes (18) are produced in the upper wall of the cooking chamber (1).
  7. Cooking appliance according to Claims 2 and 5, characterized in that the total cross-section of the calibrated hole or holes (16) of the air intake channel (13) is less than the total cross-section of the calibrated hole or holes (18) of the air extraction channel (19).
  8. Cooking appliance according to any one of the preceding claims, characterized in that the device for creating a partial vacuum is switched on as soon as the appliance is put into operation.
EP93400594A 1992-03-03 1993-03-08 Electric household cooking appliance such as an oven, a cooking range or the like Expired - Lifetime EP0615097B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9202492A FR2688297B1 (en) 1992-03-03 1992-03-03 ELECTRIC HOUSEHOLD COOKING APPARATUS, IN PARTICULAR OVENS OR COOKERS COMPRISING A DEPRESSION DEVICE.
DE1993618130 DE69318130T2 (en) 1993-03-08 1993-03-08 Electric household cooking appliance such as an oven, stove or the like
EP93400594A EP0615097B1 (en) 1992-03-03 1993-03-08 Electric household cooking appliance such as an oven, a cooking range or the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202492A FR2688297B1 (en) 1992-03-03 1992-03-03 ELECTRIC HOUSEHOLD COOKING APPARATUS, IN PARTICULAR OVENS OR COOKERS COMPRISING A DEPRESSION DEVICE.
EP93400594A EP0615097B1 (en) 1992-03-03 1993-03-08 Electric household cooking appliance such as an oven, a cooking range or the like

Publications (2)

Publication Number Publication Date
EP0615097A1 EP0615097A1 (en) 1994-09-14
EP0615097B1 true EP0615097B1 (en) 1998-04-22

Family

ID=26134664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400594A Expired - Lifetime EP0615097B1 (en) 1992-03-03 1993-03-08 Electric household cooking appliance such as an oven, a cooking range or the like

Country Status (2)

Country Link
EP (1) EP0615097B1 (en)
FR (1) FR2688297B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238660C2 (en) * 1992-11-16 1994-09-01 Bosch Siemens Hausgeraete Oven, in particular with a device for pyrolytic self-cleaning
SE0101920D0 (en) * 2001-05-31 2001-05-31 Electrolux Ab Device at a built-in oven
DE102004008465A1 (en) * 2004-02-20 2005-09-08 Electrolux Home Products Corporation N.V. Process for ventilating an oven comprises sucking air from an outer chamber surrounding the oven, blowing the sucked air partially into the door inner chamber and blowing air in the door inner chamber into the outer chamber
DE102005003975A1 (en) 2005-01-28 2006-08-03 Electrolux Home Products Corp. N.V. Cooking appliance
DE102009033404A1 (en) * 2009-07-15 2011-01-27 Miele & Cie. Kg household appliance
IT1395265B1 (en) * 2009-07-30 2012-09-05 Indesit Co Spa COOKING OVEN, PARTICULARLY FOR HOUSEHOLD USE, OF IMPROVED TYPE
ES2574626T3 (en) * 2009-12-31 2016-06-21 Arçelik Anonim Sirketi Oven with ventilation duct
KR101931366B1 (en) * 2012-07-20 2018-12-21 삼성전자주식회사 Oven
CN109310237A (en) * 2016-06-14 2019-02-05 皇家飞利浦有限公司 Cooker based on air
AU2019320493A1 (en) * 2018-08-10 2021-01-07 Electrolux Appliances Aktiebolag Cooling system for a cooking oven

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862095A (en) * 1954-10-07 1958-11-25 Philco Corp Vapor treating means
FR2559241B1 (en) * 1984-02-06 1986-12-12 Dietrich Sa IMPROVEMENT FOR PUTTING AND MAINTAINING THE MOLD OF A CATALYTIC REACTOR ELECTRODOMESTIC OVEN
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
DE3839657C2 (en) * 1988-11-24 1993-11-18 Miele & Cie Air duct system for an oven

Also Published As

Publication number Publication date
FR2688297A1 (en) 1993-09-10
FR2688297B1 (en) 1999-07-30
EP0615097A1 (en) 1994-09-14

Similar Documents

Publication Publication Date Title
EP0615097B1 (en) Electric household cooking appliance such as an oven, a cooking range or the like
EP3612063B1 (en) Cabinet with enclosures for keeping food products at a hot temperature
FR2564308A1 (en) ATMOSPHERIC PRESSURE VAPOR INJECTION COOKING APPARATUS
FR2797682A1 (en) Steam and vapor evacuation system for domestic cooking oven has fan blowing vapor into pipe leading to exit, and external blower provides air stream moving air past oven inlet and vapor outlet
EP3880044A1 (en) Hot-air fryer cooking appliance provided with an optimised fresh air inlet an optimised hot air outlet
WO2006000702A1 (en) Device for heating an air circulating oven
EP1412677B1 (en) Direct convection oven
FR2930815A1 (en) Cooking oven e.g. electric cooking oven, for cooking food, has cooking chamber i.e. muffle, enclosed in chamber setting under pressure by ventilation device, and part of pressurized air introduced in cooking chamber by air inlet units
KR100634795B1 (en) Super-heated steam cooking apparatus
FR2935780A1 (en) Domestic built-in gas oven, has air introduction channel extended from lower and base walls of cabinet up to gas burner so as to supply primary air to burner, and traversing air circulation space between cabinet and cooking chamber
FR2618529A1 (en) SUPPLEMENTARY VENTILATION CIRCUIT FOR COMBINED ELECTRO-DOMESTIC OVEN
CN101204289A (en) Heating cooker heating and cooking device
EP1867929A2 (en) Steam cooking oven
EP1412678B1 (en) Forced convection gas oven
EP1867928B1 (en) Steam cooking oven
FR2663721A1 (en) Device for heating food products
CN213696616U (en) Air fryer with integral frying basket and cover plate
FR2540607A1 (en) ASSOCIATION OF MEANS FOR REDUCING THE TEMPERATURE AT THE CONTROL PANEL IN DOMESTIC FURNACES
KR20220004356A (en) Method for controling cooking appliance
EP0511052B1 (en) Cooking chamber
FR2491595A1 (en) Cooking oven combining dry, and pressurised steam cooking - uses top and bottom heating elements with switchable fan and steam generation enclosure to provide pressurised or steam injection cooking
FR2984708A1 (en) Domestic cooking device for cooking or heating food for human consumption in home, has air inlet including orifice whose section gradually decreases from external face to internal face of partition wall
JP2013217630A (en) Heating cooker
KR19980030121U (en) Exhaust duct structure of gas oven range
CN217309934U (en) Multi-liner type air fryer with steaming and baking functions

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT NL

17P Request for examination filed

Effective date: 19950310

17Q First examination report despatched

Effective date: 19960404

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980422

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980422

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REF Corresponds to:

Ref document number: 69318130

Country of ref document: DE

Date of ref document: 19980528

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19980422

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990331

26N No opposition filed
BERE Be: lapsed

Owner name: CIE EUROPEENNE POUR L'EQUIPEMENT MENAGER CEPEM

Effective date: 19990331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070312

Year of fee payment: 15

NLS Nl: assignments of ep-patents

Owner name: COMPAGNIE EUROPEENNE DE FABRICATION D'ENCEINTES MI

Effective date: 20071018

Owner name: BRANDT INDUSTRIES

Effective date: 20071018

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: BRANDT COOKING

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070616

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081001

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20090331

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080308

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20101001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001