EP0538163A1 - Method and device for applying micro-waves to products for thawing, heating and drying - Google Patents

Method and device for applying micro-waves to products for thawing, heating and drying Download PDF

Info

Publication number
EP0538163A1
EP0538163A1 EP92450014A EP92450014A EP0538163A1 EP 0538163 A1 EP0538163 A1 EP 0538163A1 EP 92450014 A EP92450014 A EP 92450014A EP 92450014 A EP92450014 A EP 92450014A EP 0538163 A1 EP0538163 A1 EP 0538163A1
Authority
EP
European Patent Office
Prior art keywords
products
enclosure
antennas
thawing
layer
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.)
Withdrawn
Application number
EP92450014A
Other languages
German (de)
French (fr)
Inventor
Etienne De Maillard
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.)
MAILLARD ETIENNE DE
Original Assignee
MAILLARD ETIENNE DE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAILLARD ETIENNE DE filed Critical MAILLARD ETIENNE DE
Publication of EP0538163A1 publication Critical patent/EP0538163A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6402—Aspects relating to the microwave cavity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/046—Microwave drying of wood, ink, food, ceramic, sintering of ceramic, clothes, hair

Definitions

  • the present invention relates to a new method of applying microwaves to various products, food or not, for various purposes such as in particular thawing, reheating or drying.
  • the process which is the subject of the invention can be applied to all kinds of other products, food or not, solid or liquid, with a view to thawing, or reheating, or drying them.
  • the object of the invention is, in general, to reduce the durations of irradiation of the products subjected to microwaves while ensuring a greater homogeneity of the irradiation field in particular when the product or products to be treated occupy a relatively large space inside the enclosure where the irradiation takes place.
  • Raw frozen dough pieces which currently represent the bulk of this market, can be stored in a cold room at -20 ° C for a very long time.
  • Consumption of frozen raw pasta is growing rapidly, particularly in bakeries in supermarkets or hypermarkets called "baking terminals", because it allows frozen dough to be stored and cooked to meet demand.
  • the equipment normally used consists of baking ovens with a cart as well as ovens or a controlled fermentation chamber with a cart too.
  • the object of the present invention is more particularly, in its application to baking or pastry making, to substantially reduce the average time for defrosting and growth, while ensuring good product quality and, by treating a substantial number in a single operation. of individual products.
  • the subject of the invention is a method of applying microwaves to products for the purposes in particular of thawing, reheating or drying, characterized in that it consists in placing the product or products to be treated on at at least one layer or layer in a suitable closed enclosure and to move a microwave source above and at a determined, constant distance from said layer, so as to sweep the entire extent of the layer in at least one way -return, the parameters of the source running speed, number of passages, intensity of the microwave radiation, being adjustable depending in particular on the type of product and the desired effects.
  • the method of the invention applies in particular to the thawing and accelerated fermentation of frozen raw dough pieces which are advantageously placed on cooking nets placed on several floors on at least one carriage inserted in an appropriate enclosure where the microwaves are generated by as many generator-antenna assemblies as stages of nets, arranged so that said antennas each move over a net, so as to sweep it from one side to the other.
  • Such a process makes it possible to reduce the average defrosting and growth time to approximately one hour and fifteen minutes, while ensuring good product quality.
  • the device represented in FIGS. 1 to 4 comprises a metallic parallelepiped enclosure 1, microwave-tight and heat-insulated, provided, on its front facade, with a solid or glazed door shown partially at 2 only in FIG. 2. If the door 2 is glazed, a screen is provided at the right of the glazing to prevent the passage of waves.
  • the interior of the chamber 1, in the embodiment shown, is provided with horizontal rails 3 fixed on the side walls so as to receive a series of cooking nets 4 arranged horizontally one above the other and at equal distance from the each other.
  • the threads 4, of wavy shape, are conventional and of the metallized or aluminum type.
  • the antennas 5 are parallel to the side walls of the chamber and fixed at their rear end to an antenna support column 6, on which magnetrons 7 are also fixed, each facing an antenna 5.
  • the antennas 5 pass through an isolation separating partition 8 delimiting the bottom of the chamber and pierced with elongated horizontal windows 9.
  • the column 6 is slidably mounted on two parallel horizontal rods 10, the movement being provided for example (FIG. 4) by a fixed electric motor 11 driving the lower rod 10 which is a threaded rod cooperating with a drive nut secured to the column 6.
  • cooling fans for magnetrons 7 and 13 are electrical transformers for feeding magnetrons.
  • the air conditioning unit In the upper part of the chamber is arranged in a compartment 16 the air conditioning unit intended to maintain the products in negative temperature if necessary and to delay the initiation of fermentation.
  • Temperature and humidity sensors are placed in the appropriate places inside the room and connected to the air conditioning unit to ensure the necessary regulations.
  • the antennas 5 have slots for diffusing the waves on the products placed on the cooking nets 4 and are arranged in order to obtain the greatest possible homogeneity when the antennas 5 are moved back and forth. nets.
  • the power of magnetrons 7 can be adjusted in order to obtain various production cycles adapted to different products.
  • command and control table 17 are also grouped the means of command, adjustment and control of the various parameters of the microwave irradiation process, namely, in addition to the power control of the magnetrons, the speed of movement of the column 6, the number of round trips of product scanning by the antennas 5, or continuous or intermittent scanning according to a pre-displayed program.
  • the slots 9 may possibly be provided with a means preventing or reducing the passage of waves from inside the chamber towards the magnetrons, this means not hampering the movement of the antennas 5.
  • the fans 12 can be replaced by a single ventilation system ensuring the cooling of all the magnetrons and mounted on the column 6.
  • the fermentation chamber according to the invention can be advantageously used in the cooking terminals.
  • the interior of the chamber is designed to receive one or more conventional carriages carrying cooking nets 4, the arrangement of the antennas 5 is of course provided to allow the total introduction of the carriages in the room with insertion of an antenna in the interval between two consecutive superimposed nets of each carriage.
  • the chamber is provided with correct guiding and positioning means of the carriage (s) inside.
  • the same antenna can sweep the two carriages, arranging the latter so as to allow such movement of the antennas.
  • the invention is obviously not limited to the embodiment shown and described above but on the contrary covers all the variants thereof, in particular as regards the means of translational movement of the antennas 5, the nature and the arrangement of the supports (trays or the like) of the products to be treated, as well as the nature and arrangement of the treatment enclosure.
  • the process of the invention can be applied to thawing or reheating or drying any product, whether it is liquid, or solid, in one piece or in individual elements or in pieces or particulate, in bulk or not, insofar as it is possible to move an antenna, waveguide or the like, above and at a substantially constant distance from the surface of the product, or from a sheet of product (s) .

Abstract

- The invention relates to a method and a device for applying microwaves to products especially for thawing, heating and drying. - The method of the invention is characterised in that it consists in placing the product or products to be treated on at least one bed or sheet inside an appropriate closed container (1) and in moving a microwave source (5) above and at a specified constant distance from the said bed, so as to sweep the entire extent of the bed in at least one return journey, the parameters for rate of displacement of the source, number of passes, and intensity of the microwave radiation being adjustable as a function in particular of the type of product and of the effects sought. - Application in particular to the thawing and fermentation of bakery and Viennese pastry products. <IMAGE>

Description

La présente invention a trait à un nouveau procédé d'application de micro-ondes à divers produits, alimentaires ou non, à diverses fins telles qu'en particulier décongélation, réchauffage ou séchage.The present invention relates to a new method of applying microwaves to various products, food or not, for various purposes such as in particular thawing, reheating or drying.

Bien que l'invention s'applique en particulier, et c'est un exemple d'application dans ce domaine qui sera décrit ciaprès, à la décongélation et à la fermentation accélérée de produits de boulangerie et viennoiserie, et tout spécialement des pâtons crus surgelés, le procédé objet de l'invention peut s'appliquer à toutes sortes d'autres produits, alimentaires ou non, solides ou liquides, en vue de leur décongélation, ou de leur réchauffage, ou de leur séchage.Although the invention applies in particular, and it is an example of application in this field which will be described below, to the defrosting and to the accelerated fermentation of bakery and pastry products, and especially frozen raw dough pieces , the process which is the subject of the invention can be applied to all kinds of other products, food or not, solid or liquid, with a view to thawing, or reheating, or drying them.

Le but de l'invention est, d'une manière générale, de réduire les durées d'irradiation des produits soumis aux micro-ondes tout en assurant une plus grande homogénéité du champ d'irradiation en particulier lorsque le ou les produits à traiter occupent un espace relativement important à l'intérieur de l'enceinte où s'opère l'irradiation.The object of the invention is, in general, to reduce the durations of irradiation of the products subjected to microwaves while ensuring a greater homogeneity of the irradiation field in particular when the product or products to be treated occupy a relatively large space inside the enclosure where the irradiation takes place.

Dans le domaine de la boulangerie, de nouvelles techniques de panification se développent en utilisant des produits intermédiaires qui sont, soit des pâtes surgelées crues, soit des produits précuits. Ces produits sont conservés par le froid pendant une durée plus ou moins longue, avant d'être cuits.In the baking sector, new bread-making techniques are developing using intermediate products which are either raw frozen doughs or pre-cooked products. These products are kept in the cold for a longer or shorter period before being cooked.

Les pâtons surgelés crus, qui représentent actuellement l'essentiel de ce marché, peuvent être conservés en chambre froide à -20°C pendant une très longue durée.Raw frozen dough pieces, which currently represent the bulk of this market, can be stored in a cold room at -20 ° C for a very long time.

Lorsqu'on désire les utiliser, il faut les décongeler et les laisser fermenter avant de les introduire dans le four de cuisson.When you want to use them, thaw them and let them ferment before placing them in the baking oven.

La consommation de pâtes crues congelées se développe rapidement, notamment dans les boulangeries des supermarchés ou des hypermarchés appelées "terminaux de cuisson", car elle permet d'avoir des pâtons congelés en réserve et de cuire ceux-ci pour répondre à la demande.Consumption of frozen raw pasta is growing rapidly, particularly in bakeries in supermarkets or hypermarkets called "baking terminals", because it allows frozen dough to be stored and cooked to meet demand.

L'un des principaux inconvénients de ce système est le délai nécessaire entre la sortie du congélateur de ce produit et le moment où il est mis au four.One of the main disadvantages of this system is the time required between the removal of the product from the freezer and the moment it is placed in the oven.

Ce délai moyen est de trois heures actuellement dans les matériels et techniques existant sur le marché.This average delay is currently three hours in the materials and techniques existing on the market.

Dans les terminaux de cuisson, le matériel utilisé de façon habituelle consiste en des fours de cuisson avec chariot ainsi que des étuves ou chambre de fermentation contrôlée avec chariot également.In the cooking terminals, the equipment normally used consists of baking ovens with a cart as well as ovens or a controlled fermentation chamber with a cart too.

Lorsque le délai est raccourci exceptionnellement à près de deux heures, cela se fait en augmentant très fortement les températures. La conséquence en est une forte baisse de la qualité des produits réalisés, qui manquent de goût et qui deviennent très irréguliers dans leur forme.When the time limit is exceptionally shortened to almost two hours, this is done by greatly increasing the temperatures. The consequence is a sharp drop in the quality of the products produced, which lack taste and which become very irregular in their form.

Dans le secteur de la boulangerie et de la viennoiserie, si on utilise déjà les micro-ondes, c'est essentiellement dans des tunnels dans lesquels les produits avancent sur des tapis. De tels systèmes sont encombrants et inutilisables dans des terminaux de cuisson où seuls les systèmes à chariot sont économiquement envisageables.In the bakery and pastry sector, if microwaves are already used, it is mainly in tunnels in which the products advance on carpets. Such systems are bulky and unusable in cooking terminals where only rack systems are economically possible.

De plus, ils ne permettent pas d'obtenir des champs d'irradiation homogénes et la qualité ainsi que la constance de la qualité des produits ainsi traités, la pâte surgelée étant très fragile, laissent à désirer, en sorte que ces systèmes ne répondent pas aux critères économiques d'une exploitation industrielle rationnelle.In addition, they do not make it possible to obtain homogeneous irradiation fields and the quality as well as the consistency of the quality of the products thus treated, the frozen dough being very fragile, leaves something to be desired, so that these systems do not respond to the economic criteria of rational industrial exploitation.

La présente invention a plus particulièrement pour but dans son application à la boulangerie ou viennoiserie, de réduire substantiellement le délai moyen de décongélation et de pousse, tout en assurant une bonne qualité de produits et, ce, en traitant en une seule opération un nombre substantiel de produits individuels.The object of the present invention is more particularly, in its application to baking or pastry making, to substantially reduce the average time for defrosting and growth, while ensuring good product quality and, by treating a substantial number in a single operation. of individual products.

A cet effet, l'invention a pour objet un procédé d'application de micro-ondes à des produits à des fins notamment de décongélation, réchauffage ou séchage, caractérisé en ce qu'il consiste à disposer le ou les produits à traiter sur au moins une couche ou nappe dans une enceinte fermée appropriée et à déplacer une source de micro-ondes au-dessus et à une distance déterminée, constante, de ladite couche, en sorte de balayer toute l'étendue de la couche en au moins un aller-retour, les paramètres de vitesse de défilement de la source, nombre de passage, intensité du rayonnement micro-onde, étant réglables en fonction notamment du type de produit et des effets recherchés.To this end, the subject of the invention is a method of applying microwaves to products for the purposes in particular of thawing, reheating or drying, characterized in that it consists in placing the product or products to be treated on at at least one layer or layer in a suitable closed enclosure and to move a microwave source above and at a determined, constant distance from said layer, so as to sweep the entire extent of the layer in at least one way -return, the parameters of the source running speed, number of passages, intensity of the microwave radiation, being adjustable depending in particular on the type of product and the desired effects.

Le procédé de l'invention s'applique notamment à la décongélation et la fermentation accélérée des pâtons crus surgelés qui sont avantageusement disposés sur des filets de cuisson placés sur plusieurs étages sur au moins un chariot introduit dans une enceinte appropriée où les micro-ondes sont générées par autant d'ensembles générateur-antenne que d'étages de filets, agencés de façon que lesdites antennes se déplacent chacune au-dessus d'un filet, en sorte de le balayer d'un côté à l'autre.The method of the invention applies in particular to the thawing and accelerated fermentation of frozen raw dough pieces which are advantageously placed on cooking nets placed on several floors on at least one carriage inserted in an appropriate enclosure where the microwaves are generated by as many generator-antenna assemblies as stages of nets, arranged so that said antennas each move over a net, so as to sweep it from one side to the other.

Un tel procédé permet de réduire le délai moyen de décongélation et de pousse à environ une heure quinze minutes, tout en assurant une bonne qualité de produits.Such a process makes it possible to reduce the average defrosting and growth time to approximately one hour and fifteen minutes, while ensuring good product quality.

D'autres caractéristiques et avantages ressortiront de la description qui va suivre d'un mode de réalisation du dispositif de l'invention appliqué à la décongélation et à la fermentation de pâtons crus surgelés, description donnée à titre d'exemple uniquement et en regard des dessins annexés sur lesquels :

  • Figure 1 est une vue schématique en perspective de trois-quart avant d'une chambre de fermentation contrôlée pour la mise en oeuvre du procédé de l'invention ;
  • Figure 2 est une vue de face de la chambre de la figure 1 ;
  • Figure 3 est une vue de droite en coupe verticale suivant la ligne III-III de la chambre de la figure 2, et
  • Figure 4 est une vue de droite suivant la ligne IV-IV de la chambre de la figure 3.
Other characteristics and advantages will emerge from the description which follows of an embodiment of the device of the invention applied to the thawing and fermentation of frozen raw dough pieces, description given by way of example only and with reference to annexed drawings in which:
  • Figure 1 is a schematic perspective view of three-quarter before a controlled fermentation chamber for the implementation of the method of the invention;
  • Figure 2 is a front view of the chamber of Figure 1;
  • Figure 3 is a right view in vertical section along line III-III of the chamber of Figure 2, and
  • Figure 4 is a right view along line IV-IV of the chamber of Figure 3.

Le dispositif représenté sur les figures 1 à 4 comprend une enceinte parallélépipèdique métallique 1, étanche aux micro-ondes et calorifugée, munie, sur sa façade avant, d'une porte pleine ou vitrée représentée partiellement en 2 uniquement sur la figure 2. Si la porte 2 est vitrée, un grillage est prévu au droit du vitrage pour empêcher le passage des ondes.The device represented in FIGS. 1 to 4 comprises a metallic parallelepiped enclosure 1, microwave-tight and heat-insulated, provided, on its front facade, with a solid or glazed door shown partially at 2 only in FIG. 2. If the door 2 is glazed, a screen is provided at the right of the glazing to prevent the passage of waves.

L'intérieur de la chambre 1, dans le mode de réalisation représenté, est muni de glissières horizontales 3 fixées sur les parois latérales de façon à recevoir une série de filets de cuisson 4 disposés horizontalement les uns ou dessus des autres et à égale distance les uns des autres.The interior of the chamber 1, in the embodiment shown, is provided with horizontal rails 3 fixed on the side walls so as to receive a series of cooking nets 4 arranged horizontally one above the other and at equal distance from the each other.

Les filets 4, de forme ondulée, sont conventionnels et du type métallisé ou en aluminium.The threads 4, of wavy shape, are conventional and of the metallized or aluminum type.

Lorsque les filets 4 sont en place sur les glissières 3, ils délimitent entre eux un intervalle dans lequel peut se déplacer une antenne ou guide d'onde 5 horizontal, de forme parallélépipèdique et s'étendant pratiquement sur toute la longueur du filet 4.When the threads 4 are in place on the slides 3, they delimit between them an interval in which a horizontal antenna or waveguide 5 can move, of parallelepiped shape and extending practically over the entire length of the thread 4.

Dans le mode de réalisation représenté, les antennes 5 sont parallèles aux parois latérales de la chambre et fixées à leur extrémité arrière sur une colonne 6 porte-antenne, sur laquelle sont également fixés des magnétrons 7, chacun en regard d'une antenne 5.In the embodiment shown, the antennas 5 are parallel to the side walls of the chamber and fixed at their rear end to an antenna support column 6, on which magnetrons 7 are also fixed, each facing an antenna 5.

Les antennes 5 traversent une cloison séparatrice d'isolement 8 délimitant le fond de la chambre et percée de fenêtres horizontales allongées 9.The antennas 5 pass through an isolation separating partition 8 delimiting the bottom of the chamber and pierced with elongated horizontal windows 9.

La colonne 6 est montée coulissante sur deux tiges horizontales parallèles 10, le déplacement étant assuré par exemple (figure 4) par un moteur électrique fixe 11 entraînant la tige inférieure 10 qui est une tige filetée coopérant avec une noix d'entraînement solidaire de la colonne 6.The column 6 is slidably mounted on two parallel horizontal rods 10, the movement being provided for example (FIG. 4) by a fixed electric motor 11 driving the lower rod 10 which is a threaded rod cooperating with a drive nut secured to the column 6.

Sur la figure 4 on a représenté en 12 des ventilateurs de refroidissement des magnétrons 7 et en 13 des transformateurs électriques d'alimentation des magnétrons.In FIG. 4, 12 are shown cooling fans for magnetrons 7 and 13 are electrical transformers for feeding magnetrons.

La colonne 6 et ses accessoires ainsi que ses moyens de déplacement en translation horizontale à va-et-vient selon la double flèche 14 (figures 1 et 4), sont logés dans un compartiment étanche 15 disposé à l'arrière de la chambre.Column 6 and its accessories as well as its means of displacement in horizontal translation back and forth according to the double arrow 14 (Figures 1 and 4), are housed in a sealed compartment 15 disposed at the rear of the chamber.

En partie supérieure de la chambre est disposé dans un compartiment 16 le groupe de climatisation destiné à maintenir les produits en température négative si nécessaire et à retarder le déclenchement de la fermentation.In the upper part of the chamber is arranged in a compartment 16 the air conditioning unit intended to maintain the products in negative temperature if necessary and to delay the initiation of fermentation.

On a représenté en 17 sur les figures 1,2 et 3 les organes externes de commande et contrôle du groupe de climatisation.There are shown at 17 in Figures 1,2 and 3 the external command and control members of the air conditioning unit.

Des sondes de température et d'hygrométrie (non représentées) sont disposées aux endroits appropriés à l'intérieur de la chambre et reliées au groupe de climatisation pour assurer les régulations nécessaires.Temperature and humidity sensors (not shown) are placed in the appropriate places inside the room and connected to the air conditioning unit to ensure the necessary regulations.

Enfin, en 18 et 19 respectivement sont représentés des contacts de sécurité coupant l'alimentation électrique en cas d'ouverture de la porte avant 2 ou de la trappe (non représentée) d'accès au compartiment arrière 15 de la chambre.Finally, in 18 and 19 respectively are shown safety contacts cutting off the electrical supply in the event of opening of the front door 2 or of the hatch (not shown) for access to the rear compartment 15 of the chamber.

Les antennes 5 comportent des fentes de diffusion des ondes sur les produits disposés sur les filets de cuisson 4 et sont agencées en vue d'obtenir l'homogénéité la plus grande possible lors du déplacement à va-et-vient des antennes 5 au-dessus des filets.The antennas 5 have slots for diffusing the waves on the products placed on the cooking nets 4 and are arranged in order to obtain the greatest possible homogeneity when the antennas 5 are moved back and forth. nets.

La puissance des magnétrons 7 peut être réglée afin d'obtenir divers cycles de production adaptés à différents produits.The power of magnetrons 7 can be adjusted in order to obtain various production cycles adapted to different products.

Sur le tableau 17 de commande et contrôle sont également groupés les moyens de commande, réglage et contrôle des divers paramètres du processus d'irradiation aux micro-ondes, à savoir, outre la commande de puissance des magnétrons, la vitesse de déplacement de la colonne 6, le nombre d'aller et retour de balayage des produits par les antennes 5, ou le balayage continu ou intermittent suivant un programme préaffiché.On the command and control table 17 are also grouped the means of command, adjustment and control of the various parameters of the microwave irradiation process, namely, in addition to the power control of the magnetrons, the speed of movement of the column 6, the number of round trips of product scanning by the antennas 5, or continuous or intermittent scanning according to a pre-displayed program.

Les fentes 9 peuvent éventuellement être munies d'un moyen évitant ou réduisant le passage des ondes de l'intérieur de la chambre en direction des magnétrons, ce moyen n'entravant pas le déplacement des antennes 5.The slots 9 may possibly be provided with a means preventing or reducing the passage of waves from inside the chamber towards the magnetrons, this means not hampering the movement of the antennas 5.

Les ventilateurs 12 peuvent être remplacés par un système de ventilation unique assurant la refroidissement de l'ensemble des magnétrons et monté sur la colonne 6.The fans 12 can be replaced by a single ventilation system ensuring the cooling of all the magnetrons and mounted on the column 6.

La chambre de fermentation selon l'invention peut être avantageusement utilisée dans les terminaux de cuisson.The fermentation chamber according to the invention can be advantageously used in the cooking terminals.

A cet effet, l'intérieur de la chambre est conçu pour recevoir un ou plusieurs chariots conventionnels portant des filets de cuisson 4, l'agencement des antennes 5 étant bien entendu prévu pour permettre l'introduction totale du ou des chariots dans la chambre avec insertion d'une antenne dans l'intervalle entre deux filets superposés consécutifs de chaque chariot.To this end, the interior of the chamber is designed to receive one or more conventional carriages carrying cooking nets 4, the arrangement of the antennas 5 is of course provided to allow the total introduction of the carriages in the room with insertion of an antenna in the interval between two consecutive superimposed nets of each carriage.

La chambre est munie de moyens de guidage et positionnement corrects du ou des chariots à l'intérieur.The chamber is provided with correct guiding and positioning means of the carriage (s) inside.

Si par exemple deux chariots peuvent être logés côte à côte dans une même chambre, une même antenne pourra balayer les deux chariots, en agençant ces derniers en sorte de permettre un tel déplacement des antennes.If for example two carriages can be housed side by side in the same room, the same antenna can sweep the two carriages, arranging the latter so as to allow such movement of the antennas.

Par ailleurs, l'invention n'est évidemment pas limitée au mode de réalisation représenté et décrit ci-dessus mais en couvre au contraire toutes les variantes, notamment en ce qui concerne les moyens de déplacement en translation des antennes 5, la nature et l'agencement des supports (plateaux ou analogues) des produits à traiter, ainsi que la nature et l'agencement de l'enceinte de traitement.Furthermore, the invention is obviously not limited to the embodiment shown and described above but on the contrary covers all the variants thereof, in particular as regards the means of translational movement of the antennas 5, the nature and the arrangement of the supports (trays or the like) of the products to be treated, as well as the nature and arrangement of the treatment enclosure.

Enfin, le procédé de l'invention peut s'appliquer à la décongélation ou au réchauffage ou au,séchage de tout produit, qu'il soit liquide, ou solide, d'un seul tenant ou en éléments individuels ou en morceaux ou particulaire, en vrac ou non, dans la mesure où il est possible de déplacer une antenne, guide-d'onde ou analogue, au-dessus et à une distance sensiblement constante de la surface du produit, ou d'une nappe de produit (s) .Finally, the process of the invention can be applied to thawing or reheating or drying any product, whether it is liquid, or solid, in one piece or in individual elements or in pieces or particulate, in bulk or not, insofar as it is possible to move an antenna, waveguide or the like, above and at a substantially constant distance from the surface of the product, or from a sheet of product (s) .

Claims (7)

Procédé d'application de micro-ondes à des produits à des fins notamment de décongélation, réchauffage ou séchage, caractérisé en ce qu'il consiste à disposer le ou les produits à traiter sur au moins une couche ou nappe dans une enceinte fermée appropriée (1) et à déplacer une source de micro-ondes (5) au-dessus et à une distance déterminée, constante, de ladite couche, en sorte de balayer toute l'étendue de la couche en au moins un aller-retour, les paramètres de vitesse de défilement de la source, nombre de passage, intensité du rayonnement micro-onde étant réglables en fonction notamment du type de produit et des effets recherchés.Process for applying microwaves to products for the purposes in particular of thawing, reheating or drying, characterized in that it consists in placing the product or products to be treated on at least one layer or sheet in an appropriate closed enclosure ( 1) and to move a microwave source (5) above and at a determined, constant distance from said layer, so as to sweep the entire extent of the layer in at least one round trip, the parameters source running speed, number of passages, intensity of microwave radiation being adjustable depending in particular on the type of product and the desired effects. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce qu'il comprend : - une enceinte (1), métallique, étanche aux ondes, calorifugées et munie d'un moyen d'accès (2), - des moyens (3,4) pour recevoir à l'intérieur de ladite enceinte (1) du ou des produits distribués suivant au moins une couche ou nappe, - au moins un ensemble magnétron (7)-antenne (5) agencé de façon à se déplacer à l'intérieur de ladite enceinte, ladite antenne (5) balayant toute l'étendue de ladite couche ou nappe, - et des moyens (17) de commande, réglage et contrôle des divers paramètres de l'irradiation et du balayage. Device for implementing the method according to claim 1, characterized in that it comprises: - a metallic enclosure (1), impermeable to waves, heat-insulated and provided with an access means (2), - means (3,4) for receiving inside said enclosure (1) product or products distributed in at least one layer or sheet, - at least one magnetron (7) - antenna (5) assembly arranged to move inside said enclosure, said antenna (5) scanning the entire extent of said layer or sheet, - And means (17) for controlling, adjusting and monitoring the various parameters of the irradiation and scanning. Dispositif suivant la revendication 2, caractérisé en ce qu'il comprend plusieurs antennes (5) parallèles, superposées, portées par un support (6) mobile en translation horizontale et sur lequel sont fixés les magnétrons (7), une cloison séparatrice d'isolement (8) étant disposée dans l'enceinte entre les antennes (5) et ledit support (6) et munie de fenêtres (9) de passage desdites antennes.Device according to claim 2, characterized in that it comprises several antennas (5) parallel, superimposed, carried by a support (6) movable in horizontal translation and on which are fixed the magnetrons (7), an isolation separating partition (8) being disposed in the enclosure between the antennas (5) and said support (6) and provided with windows (9) for passage of said antennas. Dispositif suivant les revendications 2 et 3, caractérisé en ce que lesdits moyens de réception des produits sont des glissières (3) fixées sur les parois internes de l'enceinte et susceptibles de recevoir des plateaux (4) de support des produits à traiter, disposés parallèlement les uns au dessus des autres et à égale distance les uns des autres, en sorte de définir entre eux un intervalle dans lequel peut se déplacer à va-et-vient une antenne (5).Device according to Claims 2 and 3, characterized in that the said means for receiving the products are slides (3) fixed on the internal walls of the enclosure and capable of receiving plates (4) for supporting the products to be treated, arranged parallel to each other and at an equal distance from each other, so as to define between them an interval in which an antenna (5) can move back and forth. Dispositif suivant les revendications 2 et 3, caractérisé en ce que lesdits moyens de réception des produits sont des chariots indépendants portant les produits suivant plusieurs couches ou nappes superposées et à égale distance les unes des autres, des moyens étant prévus dans l'enceinte pour guider et positionner le ou les chariots, en sorte que lesdites antennes (5) puissent se déplacer à va-et-vient entre deux couches ou nappes successives.Device according to claims 2 and 3, characterized in that said means for receiving the products are independent carriages carrying the products in several superposed layers or layers and at equal distance from each other, means being provided in the enclosure for guiding and positioning the carriage (s), so that said antennas (5) can move back and forth between two successive layers or layers. Dispositif suivant la revendication 3, caractérisé en ce que lesdites fenêtres (9) de passage des antennes (5) sont munies d'un moyen de réduction du passage des ondes.Device according to claim 3, characterized in that said windows (9) for the passage of the antennas (5) are provided with means for reducing the passage of waves. Application du procédé à la décongélation et à la fermentation de pâtons crus surgelés, ceux-ci étant disposés sur des filets (4) superposés, placés directement dans l'enceinte de traitement (1) ou indirectement par l'intermédiaire de chariots introduits dans ladite enceinte (1).Application of the process to the thawing and fermentation of frozen raw dough pieces, these being placed on superimposed fillets (4), placed directly in the treatment enclosure (1) or indirectly by means of trolleys introduced into said pregnant (1).
EP92450014A 1991-10-16 1992-10-13 Method and device for applying micro-waves to products for thawing, heating and drying Withdrawn EP0538163A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9112995 1991-10-16
FR9112995A FR2682848B1 (en) 1991-10-16 1991-10-16 METHOD AND APPARATUS FOR APPLYING MICROWAVE TO PRODUCTS FOR PARTICULARLY DEFROSTING, HEATING, DRYING.
US08/049,371 US5334403A (en) 1991-10-16 1993-04-21 Method and device for applying microwaves to products, especially for drying, reheating and defreezing said products

Publications (1)

Publication Number Publication Date
EP0538163A1 true EP0538163A1 (en) 1993-04-21

Family

ID=26229011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92450014A Withdrawn EP0538163A1 (en) 1991-10-16 1992-10-13 Method and device for applying micro-waves to products for thawing, heating and drying

Country Status (3)

Country Link
US (1) US5334403A (en)
EP (1) EP0538163A1 (en)
FR (1) FR2682848B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1835787A2 (en) * 2006-03-16 2007-09-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Microwave oven
DE102006046422A1 (en) * 2006-09-22 2008-04-03 Wiesheu Gmbh Furnace for heat treatment of foodstuff, has radio frequency generator generating electromagnetic radiation and connected over feed pipe with uncoupling positions, which radiate into interspaces between product carriers

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469993B1 (en) * 2002-11-22 2005-02-05 주식회사 시공테크 Display case for cultural assets
US20060157482A1 (en) * 2004-12-13 2006-07-20 Markus Lingenheil Cooking appliance with a microwave generator device
DE102004059900B3 (en) * 2004-12-13 2006-08-03 Topinox Sarl Cooking appliance with microwave generating device
DE102006007734B3 (en) * 2006-02-20 2007-10-25 Topinox Sarl Microwave antenna structure for a cooking appliance and cooking appliance with such a microwave antenna structure
EP1853094B1 (en) * 2006-05-04 2008-07-02 Topinox Sarl Microwave antennas configuration, accessory with such a microwave antennas configuration and equipment with at least such an accessory
JP5061662B2 (en) * 2007-03-08 2012-10-31 ダイキン工業株式会社 Drying equipment
JP2008224060A (en) * 2007-03-08 2008-09-25 Daikin Ind Ltd Conveying device
DE102007035357B4 (en) 2007-07-27 2012-08-30 Rational Ag Antenna structure for a cooking appliance and cooking appliance with such an antenna structure
KR20140077554A (en) * 2012-12-14 2014-06-24 한국전자통신연구원 Food garbage treatment apparatus for charging a tax and charging apparatus using the same
CN105345697B (en) * 2015-12-03 2018-03-30 安徽普伦智能装备有限公司 A kind of sheet member clamping air-dries two-purpose frame
CN112210974A (en) * 2019-07-11 2021-01-12 青岛海尔洗衣机有限公司 Radio frequency antenna and clothes drying equipment
CN110906722A (en) * 2019-12-23 2020-03-24 湖南微朗科技有限公司 Microwave and hot air combined glass fiber precursor dryer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056877A (en) * 1958-10-16 1962-10-02 Philips Corp Thawing device for deep-frozen substances
US3867606A (en) * 1973-10-15 1975-02-18 Raytheon Co Microwave heating apparatus for rotatable articles
FR2494562A1 (en) * 1980-11-27 1982-05-28 Pavailler Hot air bread baking oven for rotary trolley of dough pieces - has supplementary microwave heating to increase output for peak demands
US4622448A (en) * 1982-02-19 1986-11-11 Osaka Gas Company, Limited Microwave vacuum dryer apparatus
WO1990015536A1 (en) * 1989-06-12 1990-12-27 Grandi Rene Selective reheating device for food products

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162728A (en) * 1984-08-01 1986-02-05 Thorn Emi Domestic Appliances Cooking apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056877A (en) * 1958-10-16 1962-10-02 Philips Corp Thawing device for deep-frozen substances
US3867606A (en) * 1973-10-15 1975-02-18 Raytheon Co Microwave heating apparatus for rotatable articles
FR2494562A1 (en) * 1980-11-27 1982-05-28 Pavailler Hot air bread baking oven for rotary trolley of dough pieces - has supplementary microwave heating to increase output for peak demands
US4622448A (en) * 1982-02-19 1986-11-11 Osaka Gas Company, Limited Microwave vacuum dryer apparatus
WO1990015536A1 (en) * 1989-06-12 1990-12-27 Grandi Rene Selective reheating device for food products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1835787A2 (en) * 2006-03-16 2007-09-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Microwave oven
DE102006012041A1 (en) * 2006-03-16 2007-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. microwave oven
EP1835787A3 (en) * 2006-03-16 2008-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Microwave oven
DE102006046422A1 (en) * 2006-09-22 2008-04-03 Wiesheu Gmbh Furnace for heat treatment of foodstuff, has radio frequency generator generating electromagnetic radiation and connected over feed pipe with uncoupling positions, which radiate into interspaces between product carriers
DE102006046422B4 (en) * 2006-09-22 2021-01-14 Wiesheu Gmbh Oven for heat treatment of food

Also Published As

Publication number Publication date
US5334403A (en) 1994-08-02
FR2682848A1 (en) 1993-04-23
FR2682848B1 (en) 1993-12-24

Similar Documents

Publication Publication Date Title
EP0538163A1 (en) Method and device for applying micro-waves to products for thawing, heating and drying
EP0040528B1 (en) Radiant heat cooking apparatus
EP2542090B1 (en) Device for baking dough-based food products and method for baking such products
FR2726433A1 (en) CONTINUOUS BAKING OVEN FOR BAKERY PRODUCTS, VIENNESE BAKERY, PASTRY AND THE LIKE
EP3376918B1 (en) Device and method for defrosting, reheating and/or cooking a food product
FR2889029A1 (en) Defroster, reheater and cooker for flat dough or pastry products has heating base and high-powered short wave radiant heating tubes above it
EP0040565B1 (en) Electric baking appliance making sequential use of infra-red and micro-waves
FR3012870A1 (en) PROCESS FOR DEFROSTING, HEATING AND / OR COOKING A FOOD PRODUCT
FR2955462A1 (en) DEVEL FOR DEFROSTING, HEATING AND COOKING A FOOD PRODUCT, IN PARTICULAR A FROZEN FOOD PASTE
FR2975883A1 (en) Cooking device for cooking e.g. food, has heating assembly including infrared radiant emitters, and base including reciprocating grate placed on positioning grid, and water tank integrated in housing of drawer
FR2553626A1 (en) Machine for baking food products
EP1848279A2 (en) Device for preserving, cooking and automatically dispensing dough-based products, such as bread
FR2618983A1 (en) DEVICE FOR COMBINING LONGITUDINAL AND CROSS-SECTIONAL ACCUMULATING CONVEYORS FOR COOKING, TUMING OR COOLING OF FOODS
FR2486772A1 (en) Deep frozen storage of dough pieces between providing and baking - allows prod. distribution from central freezing depot to outlying baking stations
FR3030691A1 (en) ELECTRIC OVEN AND PROCESS FOR DEFROSTING, HEATING AND / OR COOKING A FOOD PRODUCT
EP0072336B1 (en) Device for reheating food within individual trays
EP0035452B1 (en) Continuous fast refrigerating or freezing cell
EP0176462A2 (en) Process for cooking foodstuffs such as hams and apparatus for carrying out the process
FR2494562A1 (en) Hot air bread baking oven for rotary trolley of dough pieces - has supplementary microwave heating to increase output for peak demands
WO1998037735A1 (en) Oven for baking dough
CN215016357U (en) Floor type potato roasting machine
FR2531828A1 (en) Improved oven, for combined so-called &#34;microwave&#34; and &#34;infrared&#34; radiations, in particular for baking and pastry making.
EP0791295A2 (en) Flexible bread production line
EP4303494A1 (en) Defrosting/heating/cooking apparatus for food, particularly based on dough such as a pizza or a pie
FR2796544A1 (en) Grill for grilling, heating, re-heating, or defrosting bread, pastry, etc., comprises removable motorized sole driven by electric motor, inclined loading plate, and control panel

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): DE ES GB IT NL

17P Request for examination filed

Effective date: 19930114

17Q First examination report despatched

Effective date: 19960129

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

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19971230