EP0609762B1 - Method for controlling the cooking in a cooking apparatus having browning- and microwave generating devices - Google Patents
Method for controlling the cooking in a cooking apparatus having browning- and microwave generating devices Download PDFInfo
- Publication number
- EP0609762B1 EP0609762B1 EP94101110A EP94101110A EP0609762B1 EP 0609762 B1 EP0609762 B1 EP 0609762B1 EP 94101110 A EP94101110 A EP 94101110A EP 94101110 A EP94101110 A EP 94101110A EP 0609762 B1 EP0609762 B1 EP 0609762B1
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- Prior art keywords
- food
- weight
- heating
- heating time
- control means
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- 238000010411 cooking Methods 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 87
- 235000013305 food Nutrition 0.000 claims description 69
- 238000004364 calculation method Methods 0.000 claims description 15
- 230000006870 function Effects 0.000 claims description 10
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 14
- 241000286209 Phasianidae Species 0.000 description 2
- 238000012886 linear function Methods 0.000 description 2
- 241000272517 Anseriformes Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 241000272458 Numididae Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 235000013330 chicken meat Nutrition 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
- H05B6/647—Aspects related to microwave heating combined with other heating techniques
- H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
Definitions
- the present invention relates to a method for controlling a cooking appliance.
- a cooking cavity comprising a device browning of electrical resistance food placed inside said cavity and a generation device of microwave energy placed outside the cooking cavity and capable of supplying said cavity in microwave energy, a power circuit for power the browning device and the microwave energy generation, selection means for selecting a heating sequence, said heating sequence involving at least the device of gilding, to select the nature and the weight of the food, and control means which activate the circuit power supply based on information from the selection means, said means for order comprising first calculation means for determine a slope value, a storage memory receiving information from selection means and a microprocessor providing applied signals to the supply circuit according to the information contained in said storage memory.
- a family of foods generally includes several types of food.
- the VOLAILLES family includes, for example, chickens, ducks, guinea fowl, quails, pheasants ...
- Control means after analysis of the selected family, determine a sequence of heating which is suitable for the average population of the food family and not for each type of food. Through elsewhere, for low-weight foods whose heating sequence involves at least the device of browning, the heating sequence calculated by the control means makes it possible to obtain either a food overly browned but undercooked, or overcooked food but not golden enough. The calculated heating sequence does not therefore never exactly responds to the user's wishes, namely obtaining a sufficiently cooked food and golden regardless of the type and weight of the food treat.
- the object of the invention is to remedy the drawbacks above by implementing a method for controlling a cooking appliance which, taking into account the type and weight of the food to be treated, determines the optimal heating sequence selected by the user to obtain a food sufficiently cooked and golden.
- the plurality of selectable codes favor the refinement of the heating optimization curves, thus making it possible to calculate, with greater precision, the heating time of the cooking appliance.
- a cooking appliance 1 such that an oven comprises a cooking cavity 2 comprising a browning device 3 placed inside the cavity 2 and a microwave energy generation device 4 placed outside the cooking cavity 2.
- a power supply circuit not shown and capable of supplying the gilding device 3 and the microwave energy generation device 4.
- the cooking cavity 2 is delimited by a door 5 shown dotted and placed on the front face 6 of the cooking appliance.
- This front face 6 shown partially includes selection means not shown which allow you to select a sequence of heating to be carried out on a food 7, to select the nature 7 as well as the weight of the food 7.
- the cooking appliance 1 includes control means not shown which include, early calculation means for determining a slope value, a storage memory receiving information from selection means and, on the other hand, a microprocessor providing signals applied to the power circuit based on information in memory storage.
- an optimization curve 8 of a heating sequence of a food involving only the microwave energy generation device represents the heating time T defined for example as ordered as a function of the weight P food defined for example as abscissa.
- T KP
- K represents the slope of the curve.
- the first calculation means determine a slope value K i of the optimization curve of the heating sequence to be calculated by the relation:
- the abscissa P o corresponds to the inflection point of the optimization curves of cooking of different types of food, the section of curve of coordinates less than P o corresponding to a sequence heating with at least the gilding device.
- the weight threshold value Po is substantially equal at 400 g.
- the heating time T K i P
- the storage memory contains, for each sequence heating a maximum heating time not to be not exceed and the control means include third means of calculation which, on the one hand, compare the heating time calculated by the second means of calculation with the maximum heating time for a sequence determined heating and, secondly, depending the result from the third calculation means, trigger, an error message if the calculated time is greater than the maximum time, i.e. the sequence of heating of duration corresponding to the heating time T calculated by the control means.
- a heating sequence After the user has placed a food to be treated in the cooking cavity, the user selects a heating sequence, the weight of the food and a code number ⁇ i corresponding to l particular food to be treated. Then he presses a start button to start the operation of the cooking appliance.
- the information entered by the user is transmitted to the control means which, taking into account the information stored in the storage memory, determine the slope value K i of the sequence optimization curve selected heating system.
- the control means perform a test on the weight of the food to be treated with respect to the weight threshold value P o .
- control means first compare the corresponding calculated heating time to an optimal value of heating time with the maximum heating time contained in the memory of storage and then trigger or not the activation of the feed circuit for the browning device and the microwave energy generation device.
- the method according to the invention offers the advantage to obtain an automatic cooking of the food thanks to clarification regarding the nature of the food.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Description
La présente invention concerne un procédé de commande d'un appareil de cuisson comprenant une cavité de cuisson comportant un dispositif de dorage des aliments à résistance électrique placé à l'intérieur de ladite cavité et un dispositif de génération d'énergie micro-ondes placé à l'extérieur de la cavité de cuisson et susceptible d'alimenter ladite cavité en énergie micro-ondes, un circuit d'alimentation pour alimenter le dispositif de dorage et le dispositif de génération d'énergie micro-ondes, des moyens de sélection permettant de sélectionner une séquence de chauffage, ladite séquence de chauffage faisant intervenir au moins le dispositif de dorage, de sélectionner la nature et le poids de l'aliment, et des moyens de commande qui activent le circuit d'alimentation électrique en fonction des informations issues des moyens de sélection, lesdits moyens de commande comprenant des premiers moyens de calcul pour déterminer une valeur de pente, une mémoire de stockage recevant les informations issues des moyens de sélection et un micro-processeur fournissant des signaux appliqués au circuit d'alimentation en fonction des informations contenues dans ladite mémoire de stockage.The present invention relates to a method for controlling a cooking appliance. comprising a cooking cavity comprising a device browning of electrical resistance food placed inside said cavity and a generation device of microwave energy placed outside the cooking cavity and capable of supplying said cavity in microwave energy, a power circuit for power the browning device and the microwave energy generation, selection means for selecting a heating sequence, said heating sequence involving at least the device of gilding, to select the nature and the weight of the food, and control means which activate the circuit power supply based on information from the selection means, said means for order comprising first calculation means for determine a slope value, a storage memory receiving information from selection means and a microprocessor providing applied signals to the supply circuit according to the information contained in said storage memory.
Dans les appareils de cuisson connus de ce genre et dont un type d'appareil est décrit dans le document EP-A-0 066 637, lorsqu'un aliment est placé à l'intérieur de la cavité de cuisson, un utilisateur commence une séquence de chauffage en sélectionnant une fonction déterminée de chauffage, une famille d'aliments ainsi que son poids et, ensuite en appuyant sur un bouton, il déclenche ladite séquence de chauffage. Les moyens de commande déterminent la séquence de chauffage (dispositif de dorage et/ou dispositif de génération d'énergie micro-ondes) calculant ainsi le temps de chauffage de l'appareil de cuisson pour que l'aliment subisse le meilleur traitement possible.In known cooking appliances of this kind and one type of device of which is described in document EP-A-0 066 637, when a food is placed inside the cooking cavity, a user starts a sequence heating by selecting a specific function of heating, a family of foods as well as its weight and, then by pressing a button, it triggers said heating sequence. The control means determine the heating sequence (browning device and / or microwave power generation device) calculating thus the heating time of the cooking appliance for that the food undergoes the best possible treatment.
Or une famille d'aliments regroupe généralement plusieurs types d'aliments. La famille VOLAILLES regroupe, par exemple, les poulets, canards, pintades, cailles, faisans... Les moyens de commande après analyse de la famille sélectionnée, déterminent une séquence de chauffage qui est adaptée à la population moyenne de la famille d'aliments et non à chaque type d'aliment. Par ailleurs, pour des aliments de faible poids et dont la séquence de chauffage fait intervenir au moins le dispositif de dorage, la séquence de chauffage calculée par les moyens de commande permet d'obtenir soit un aliment trop doré mais pas assez cuit, soit un aliment trop cuit mais pas assez doré. La séquence de chauffage calculée ne répond donc jamais exactement aux désirs de l'utilisateur, à savoir l'obtention d'un aliment suffisamment cuit et doré quels que soient le type et le poids de l'aliment à traiter.A family of foods generally includes several types of food. The VOLAILLES family includes, for example, chickens, ducks, guinea fowl, quails, pheasants ... Control means after analysis of the selected family, determine a sequence of heating which is suitable for the average population of the food family and not for each type of food. Through elsewhere, for low-weight foods whose heating sequence involves at least the device of browning, the heating sequence calculated by the control means makes it possible to obtain either a food overly browned but undercooked, or overcooked food but not golden enough. The calculated heating sequence does not therefore never exactly responds to the user's wishes, namely obtaining a sufficiently cooked food and golden regardless of the type and weight of the food treat.
Le but de l'invention est de remédier, aux inconvénients précités en mettant en oeuvre un procédé de commande d'un appareil de cuisson qui, en tenant compte du type et du poids de l'aliment à traiter, détermine la séquence de chauffage optimale sélectionnée par l'utilisateur pour obtenir un aliment suffisamment cuit et doré. The object of the invention is to remedy the drawbacks above by implementing a method for controlling a cooking appliance which, taking into account the type and weight of the food to be treated, determines the optimal heating sequence selected by the user to obtain a food sufficiently cooked and golden.
Selon une première caractéristique de l'invention, la mémoire de stockage contient :
- des indices i correspondant à des séquences de chauffage ;
- des numéros de codes αi correspondant chacun à un type d'aliment particulier pour un indice i déterminés, et délimités, pour chaque indice i, entre une valeur inférieure mi et une valeur supérieure Mi ;
- des tableaux de valeurs correspondant à des coefficients de pente kmi et kMi de courbes d'optimisation de chauffage d'un aliment qui sont prédéterminées en fonction des indices i, et qui représentent le temps de chauffage de l'appareil de cuisson en fonction du poids de l'aliment, lesdits coefficients correspondant respectivement à des valeurs de pente minimum et maximum desdites courbes ;
- un tableau de valeurs de coefficients ai pour chaque indice i ;
- une valeur seuil de poids Po correspondant à une valeur déterminée d'abscisse des courbes d'optimisation en dessous de laquelle, pour une séquence de chauffage faisant intervenir au moins le dispositif de dorage, les moyens de commande calculant le temps de chauffage prennent en considération un coefficient de pondération dont la valeur est déterminée par le produit du coefficient ai par la valeur seuil de poids Po ;
- les premiers moyens de calcul déterminant une valeur de
pente optimum Ki définie par la relation :
- et les moyens de commande comprennent des deuxièmes moyens de calcul pour, d'une part, comparer le poids de l'aliment sélectionné avec la valeur seuil de poids Po et, d'autre part, calculer en fonction du résultat de la comparaison des poids, pour une séquence de chauffage faisant intervenir au moins le dispositif de dorage, le temps de chauffage T de l'appareil de cuisson de la manière suivante :
- si le poids de l'aliment est inférieure ou égal
à la valeur seuil de poids Po, le temps de chauffage T est
défini par la relation :
- si le poids de l'aliment est supérieur à la valeur
seuil du poids Po, le temps de chauffage T est défini
par la relation
- indices i corresponding to heating sequences;
- code numbers α i each corresponding to a particular type of food for a given index i, and delimited, for each index i, between a lower value mi and a higher value M i ;
- tables of values corresponding to the slope coefficients km i and kM i of optimization curves for heating a food which are predetermined as a function of the indices i, and which represent the heating time of the cooking appliance as a function the weight of the food, said coefficients corresponding respectively to minimum and maximum slope values of said curves;
- a table of values of coefficients a i for each index i;
- a weight threshold value Po corresponding to a determined value of abscissa of the optimization curves below which, for a heating sequence involving at least the browning device, the control means calculating the heating time take into consideration a weighting coefficient whose value is determined by the product of the coefficient a i by the weight threshold value P o ;
- the first calculation means determining an optimum slope value K i defined by the relation:
- and the control means comprise second calculation means for, on the one hand, comparing the weight of the selected food with the weight threshold value Po and, on the other hand, calculating as a function of the result of the comparison of the weights , for a heating sequence involving at least the browning device, the heating time T of the cooking appliance as follows:
- if the weight of the food is less than or equal to the weight threshold value P o , the heating time T is defined by the relation:
- if the weight of the food is greater than the threshold value of the weight P o , the heating time T is defined by the relation
Grâce à l'appareil de chauffage selon l'invention, la pluralité des codes sélectionnables favorisent l'affinage des courbes d'optimisation de chauffage permettant ainsi de calculer, avec une plus grande précision, le temps de chauffage de l'appareil de cuisson. D'autre part, pour des séquences de chauffage faisant intervenir le dispositif de dorage, il est indispensable de tenir compte du poids de l'aliment. C'est pourquoi, avec le contrôle du poids de l'aliment par rapport à un poids de seuil déterminé, on agit sur le temps de chauffage de l'appareil de cuisson qui, si le poids de l'aliment est inférieur au poids de seuil PO, varie de façon non linéaire en fonction du poids de l'aliment, et si le poids de l'aliment est supérieur au poids de seuil P0, varie de façon linéaire en fonction du poids de l'aliment.Thanks to the heating appliance according to the invention, the plurality of selectable codes favor the refinement of the heating optimization curves, thus making it possible to calculate, with greater precision, the heating time of the cooking appliance. On the other hand, for heating sequences involving the browning device, it is essential to take into account the weight of the food. This is why, with the control of the weight of the food relative to a determined threshold weight, one acts on the heating time of the cooking appliance which, if the weight of the food is less than the weight threshold P O , varies non-linearly according to the weight of the food, and if the weight of the food is greater than the threshold weight P 0 , varies linearly depending on the weight of the food.
Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, pris à titre d'exemple non limitatif, en référence aux dessins dans lesquels :
- la figure 1 est une vue en plan en coupe d'un appareil de cuisson selon l'invention,
- la figure 2 est une représentation graphique de courbes d'optimisation de chauffage qui montrent, compte tenu d'une séquence de chauffage déterminée, le temps de chauffage de l'appareil de cuisson en fonction du poids de l'aliment sélectionné,
- la figure 3 est un schéma fonctionnel représentant le procédé de commande de cuisson de l'appareil de cuisson selon l'invention.
- FIG. 1 is a plan view in section of a cooking appliance according to the invention,
- FIG. 2 is a graphical representation of heating optimization curves which show, taking into account a determined heating sequence, the heating time of the cooking appliance as a function of the weight of the selected food,
- Figure 3 is a block diagram showing the cooking control method of the cooking appliance according to the invention.
Selon la figure 1, un appareil de cuisson 1 tel
qu'un four comprend une cavité de cuisson 2 comportant un
dispositif de dorage 3 placé à l'intérieur de la cavité
de cuisson 2 et un dispositif de génération d'énergie micro-ondes
4 placé à l'extérieur de la cavité de cuisson
2. Un circuit d'alimentation électrique non représenté et
susceptible d'alimenter le dispositif de dorage 3 et
le dispositif de génération d'énergie micro-ondes 4. La
cavité de cuisson 2 est délimitée par une porte 5 représentée
en pointillés et placée sur la face avant 6 de
l'appareil de cuisson. Cette face avant 6 représentée
partiellement comporte des moyens de sélection non représentés
qui permettent de sélectionner une séquence de
chauffage à effectuer sur un aliment 7, de sélectionner
la nature 7 ainsi que le poids de l'aliment 7. According to Figure 1, a cooking appliance 1 such
that an oven comprises a
L'appareil de cuisson 1 comporte des moyens de commande non représentés qui comprennent, des premiers moyens de calcul pour déterminer une valeur de pente, une mémoire de stockage recevant des informations issues des moyens de sélection et, d'autre part, un micro-processeur fournissant des signaux appliqués au circuit d'alimentation en fonction des informations contenues dans la mémoire de stockage.The cooking appliance 1 includes control means not shown which include, early calculation means for determining a slope value, a storage memory receiving information from selection means and, on the other hand, a microprocessor providing signals applied to the power circuit based on information in memory storage.
Selon la figure 2, une courbe d'optimisation 8
d'une séquence de chauffage d'un aliment faisant intervenir
uniquement le dispositif de génération d'énergie micro-ondes
représente le temps de chauffage T défini par
exemple comme ordonnée en fonction du poids P de l'aliment
défini par exemple comme abscisse. Une telle courbe
est généralement de forme linéaire et est définie par la
relation
Pour une séquence de chauffage faisant intervenir
au moins le dispositif de dorage, des expériences sur des
aliments placés dans un appareil de cuisson ont permis de
définir en fonction de la nature et du poids de l'aliment
une courbe d'optimisation 9 de ladite séquence de chauffage.
Cette courbe 9 montre que, pour des aliments de
faible poids, le dorage par le gril n'est pas proportionnel
au temps de chauffage. Lors d'une séquence de chauffage
faisant intervenir le dispositif de dorage et le
dispositif de génération d'énergie micro-ondes, et pour
des aliments dont le poids est P1, les aliments sont,
soit bien rôtis mais trop cuits, point A de la courbe 9 ;
soit bien cuits mais pas assez rôtis, point B de la
courbe 8. For a heating sequence involving
at least the gilding device, experiments on
food placed in a cooking appliance
define according to the nature and weight of the food
an optimization curve 9 of said heating sequence.
This curve 9 shows that, for foods of
low weight, browning by the grill is not proportional
at heating time. During a heating sequence
involving the gilding device and the
microwave energy generation device, and for
foods whose weight is P1, foods are,
either well roasted but overcooked, point A on curve 9;
well cooked but not roasted enough, point B of the
Pour tenir compte du type de l'aliment à traiter, la mémoire de stockage des moyens de commande contient :
- des indices i correspondant à des séquences de chauffage ;
- des numéros de codes αi correspondant chacun à un type d'aliment particulier pour un indice i déterminé, et délimités, pour chaque indice i, entre une valeur inférieure mi et une valeur supérieure Mi ;
- des tableaux de valeurs correspondant à des coefficients de pentes kmi et kMi de courbes d'optimisation de chauffage d'un aliment qui sont prédéterminées en fonction des indices i, et qui représentent le temps de chauffage de l'appareil de cuisson en fonction du poids de l'aliment, lesdits coefficients correspondant respectivement à des valeur de pentes minimum et maximum desdites courbes ;
- un tableau de valeurs de coefficients ai pour chaque indice i ;
- une valeur seuil de poids Po correspondant à une valeur déterminée d'abscisse des courbes d'optimisation en dessous de laquelle, pour une séquence de chauffage faisant intervenir au moins le dispositif de dorage, les moyens de commande calculant le temps de chauffage prennent en considération un coefficient de pondération dont la valeur est déterminée par le produit du coefficient ai par la valeur seuil de poids PO ; et les moyens de commande comprenant des deuxièmes moyens de calcul pour, d'une part, comparer le poids de l'aliment sélectionné avec la valeur seuil de poids PO et, d'autre part, déterminer, en fonction du résultat de la comparaison des poids, le temps de chauffage de l'appareil de cuisson, les courbes d'optimisation de chauffage d'un aliment représentant en abscisse le poids de l'aliment et en ordonnée le temps de chauffage correspondant, au-delà de la valeur d'abscisse PO, à des fonctions linéaires, et en dessous de ladite valeur PO, pour une séquence de chauffage faisant intervenir au moins le dispositif de dorage, à des fonctions échantillonnées dont l'ordonnée à l'origine est différente de l'ordonnée à l'origine de celles des fonctions linéaires.
- indices i corresponding to heating sequences;
- code numbers α i each corresponding to a particular type of food for a given index i, and delimited, for each index i, between a lower value m i and a higher value M i ;
- tables of values corresponding to the slope coefficients km i and kM i of optimization curves for heating a food which are predetermined according to the indices i, and which represent the heating time of the cooking appliance as a function the weight of the food, said coefficients corresponding respectively to minimum and maximum slope values of said curves;
- a table of values of coefficients a i for each index i;
- a weight threshold value Po corresponding to a determined value of abscissa of the optimization curves below which, for a heating sequence involving at least the browning device, the control means calculating the heating time take into consideration a weighting coefficient whose value is determined by the product of the coefficient a i by the weight threshold value P O ; and the control means comprising second calculation means for, on the one hand, comparing the weight of the selected food with the weight threshold value P O and, on the other hand, determining, as a function of the result of the comparison of the weights, the heating time of the cooking appliance, the heating optimization curves of a food representing on the abscissa the weight of the food and on the ordinate the corresponding heating time, beyond the value d 'abscissa P O , to linear functions, and below said value P O , for a heating sequence involving at least the gilding device, to sampled functions whose ordinate at the origin is different from the intercept of those of linear functions.
Grâce aux dites informations contenues dans la mémoire
de stockage, les premiers moyens de calcul déterminent
une valeur de pente Ki de la courbe d'optimisation de
la séquence de chauffage à calculer par la relation :
Comme illustré par la courbe 9 de la figure 2, l'abscisse Po correspond au point d'inflexion des courbes d'optimisation de cuisson de différents types d'aliments, le tronçon de courbe de coordonnées inférieures à Po correspondant à une séquence de chauffage avec au moins le dispositif de dorage.As illustrated by curve 9 in FIG. 2, the abscissa P o corresponds to the inflection point of the optimization curves of cooking of different types of food, the section of curve of coordinates less than P o corresponding to a sequence heating with at least the gilding device.
La valeur seuil de poids Po est sensiblement égale à 400 g.The weight threshold value Po is substantially equal at 400 g.
Si le poids de l'aliment sélectionné est inférieur
ou égal au seuil de poids Po, le temps de chauffage T est
défini par la relation :
Si le poids de l'aliment est supérieur ou égal au
seuil de poids Po, le temps de chauffage T est défini par
la relation :
Pour éviter que les temps de chauffage calculés soient néfastes à un bon fonctionnement dudit appareil de cuisson, la mémoire de stockage contient, pour chaque séquence de chauffage un temps maximum de chauffage à ne pas dépasser et les moyens de commande comportent des troisièmes moyens de calcul qui, d'une part, comparent le temps de chauffage calculé par les deuxièmes moyens de calcul avec le temps maximum de chauffage pour une séquence de chauffage déterminée et, d'autre part, en fonction du résultat issu des troisièmes moyens de calcul, déclenchent, soit un message d'erreur si le temps calculé est supérieur au temps maximum, soit la séquence de chauffage de durée correspondant au temps de chauffage T calculé par les moyens de commande.To avoid calculated heating times are harmful to the proper functioning of the said cooking, the storage memory contains, for each sequence heating a maximum heating time not to be not exceed and the control means include third means of calculation which, on the one hand, compare the heating time calculated by the second means of calculation with the maximum heating time for a sequence determined heating and, secondly, depending the result from the third calculation means, trigger, an error message if the calculated time is greater than the maximum time, i.e. the sequence of heating of duration corresponding to the heating time T calculated by the control means.
Afin d'illustrer le fonctionnement du four, on a représenté en la figure 3 un organigramme correspondant au procédé de commande de la cuisson d'un aliment.In order to illustrate the operation of the oven, we have shown in Figure 3 a corresponding flowchart the process for controlling the cooking of a food.
Au cours d'une première opération, après que l'utilisateur ait placé un aliment à traiter dans la cavité de cuisson, l'utilisateur sélectionne une séquence de chauffage, le poids de l'aliment et un numéro de code αi correspondant à l'aliment particulier à traiter. Ensuite, il appuie sur un bouton de démarrage pour déclencher le fonctionnement de l'appareil de cuisson. Au cours d'une deuxième opération, les informations saisies par l'utilisateur sont transmises aux moyens de commande qui, compte tenu des informations stockées dans la mémoire de stockage, déterminent la valeur de pente Ki de la courbe d'optimisation de la séquence de chauffage sélectionnée.During a first operation, after the user has placed a food to be treated in the cooking cavity, the user selects a heating sequence, the weight of the food and a code number α i corresponding to l particular food to be treated. Then he presses a start button to start the operation of the cooking appliance. During a second operation, the information entered by the user is transmitted to the control means which, taking into account the information stored in the storage memory, determine the slope value K i of the sequence optimization curve selected heating system.
Ensuite, au cours d'une troisième opération, les
moyens de commande effectuent un test sur le poids de
l'aliment à traiter par rapport à la valeur seuil de
poids Po. Dans un premier cas, si la séquence de chauffage
sélectionnée fait intervenir au moins le dispositif de
dorage et si le poids de l'aliment à traiter est inférieur
au seuil de poids Po, les moyens de commande déterminent
le temps de chauffage T par la relation :
Dans un second cas, si la séquence de chauffage
sélectionnée fait intervenir le dispositif de dorage
et le dispositif de génération d'énergie micro-ondes
et si le poids de l'aliment à traiter est supérieur au
seuil de poids Po, les moyens de commande déterminent le
temps de chauffage T par la relation :
Dans chacun des deux cas, les moyens de commande comparent d'abord le temps de chauffage calculé correspondant à une valeur optimale de temps de chauffage avec le temps maximum de chauffage contenu dans la mémoire de stockage et ensuite déclenchent ou non l'activation du circuit d'alimentation du dispositif de dorage et du dispositif de génération d'énergie micro-ondes.In each of the two cases, the control means first compare the corresponding calculated heating time to an optimal value of heating time with the maximum heating time contained in the memory of storage and then trigger or not the activation of the feed circuit for the browning device and the microwave energy generation device.
Ainsi, le procédé selon l'invention offre l'avantage d'obtenir une cuisson automatique de l'aliment grâce à la précision concernant la nature de l'aliment. De plus, compte tenu de la séquence de chauffage sélectionnée et du poids de l'aliment, on affine la courbe d'optimisation en se rapprochant d'une courbe idéale d'optimisation, ladite courbe obtenue permettant de répondre à l'attente de chaque utilisateur.Thus, the method according to the invention offers the advantage to obtain an automatic cooking of the food thanks to clarification regarding the nature of the food. Of more, taking into account the selected heating sequence and the weight of the food, we refine the optimization curve by approaching an ideal optimization curve, said curve obtained making it possible to respond to the expectation of each user.
Claims (4)
- Method of controlling a cooking appliance (1) comprising a cooking cavity (2) having a food browning device (3) with an electric element placed within the said cavity (2) and a microwave energy generating device (4) placed outside the cooking cavity (2) and able to supply the said cavity with microwave energy, an electrical supply circuit for supplying the browning device (3) and the microwave energy generating device (4), selection means for selecting a heating sequence to be effected on a food, the said sequence involving at least the browning device, for selecting the nature and weight of the food, and control means which activate the electrical supply circuit according to information coming from the selection means, the said control means comprising first calculation means for determining a gradient value, a storage memory receiving the information issuing from the selection means, and a microprocessor supplying signals applied to the supply circuit according to the information contained in the storage memory,
characterised in that the storage memory contains:indices i corresponding to heating sequences;code numbers αi each corresponding to a particular type of food for a given index i, and delimited, for each index i, between a lower value mi and an upper value Mi;tables of values corresponding to gradient coefficients kmi and kMi of heating optimisation curves for a food which are predetermined according to the indices i, and which represent the heating time of the cooking appliance as a function of the weight of the food, the said coefficients corresponding respectively to minimum and maximum gradient values of the said curves;a table of values of coefficients ai for each index i;a weight threshold value Po corresponding to a given X-axis value for the optimisation curves below which, for a heating sequence involving at least the browning device, the control means calculating the heating time take into consideration a weighting coefficient whose value is determined by the product of the coefficient ai and the weight threshold value Po;the first calculation means determine an optimum gradient value Ki defined by the equation:
and the control means comprise second calculation means for on the one hand comparing the weight of the food selected with a weight threshold value Po and on the other hand calculating, according to the result of the comparison of the weights, for a heating sequence involving at least the browning device, the heating time T of the cooking appliance in the following manner:if the weight of the food is less than or equal to the weight threshold value Po, the heating time T is defined by the equation:if the weight of the food is greater than the weight threshold value Po, the heating time T is defined by the equation - A method of controlling a cooking appliance according to Claim 1,
characterised in that the weight threshold value Po is substantially equal to 400 g. - Method of controlling a cooking appliance according to Claim 1 or 2,
characterised in that the storage memory contains, for each heating sequence, a maximum heating time not to be exceeded, and in that the control means have third calculation means which on the one hand compare the heating time T calculated by the second calculation means with the maximum heating time for a given heating sequence and on the other hand, according to the result issuing from the said third calculation means, trigger either an error message if the time calculated is greater than the maximum time or a heating sequence with a duration corresponding to the heating time T calculated by the control means. - Method of controlling a cooking appliance according to any one of Claims 1 to 3,
characterised in that it comprises a first operation in which on the one hand a heating sequence, the weight of the food and a code number αi are selected, and on the other hand the start-up of the cooking appliance is triggered, a second operation in which the control means calculate the said optimum gradient value Ki of the optimisation curve of the heating sequence selected according to the code number αi, values mi and Mi and values kmi and kMi, and a third operation in which the control means compare the weight selected with a weight threshold value Po contained in the storage memory and determine, according to the weight of the food, an optimum value of the heating time T of the cooking appliance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9301114 | 1993-02-02 | ||
| FR9301114A FR2701093B1 (en) | 1993-02-02 | 1993-02-02 | Cooking appliance comprising a browning device and a microwave energy generation device and method for controlling cooking of such a device. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0609762A1 EP0609762A1 (en) | 1994-08-10 |
| EP0609762B1 true EP0609762B1 (en) | 2000-05-03 |
Family
ID=9443636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94101110A Expired - Lifetime EP0609762B1 (en) | 1993-02-02 | 1994-01-26 | Method for controlling the cooking in a cooking apparatus having browning- and microwave generating devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5408075A (en) |
| EP (1) | EP0609762B1 (en) |
| JP (1) | JP3817276B2 (en) |
| DE (1) | DE69424198T2 (en) |
| FR (1) | FR2701093B1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ310618A (en) * | 1995-06-15 | 1999-11-29 | Electrolux Ab | An oven for the preparation of food |
| TW423264B (en) * | 1996-02-23 | 2001-02-21 | Samsung Electronics Co Ltd | A method for controlling a microwave oven to prevent overcooking of small food portions |
| GB2359148A (en) * | 2000-02-08 | 2001-08-15 | Richard Etheridge | Microwave oven time and temperature adjustment system |
| DE10342320A1 (en) * | 2003-09-12 | 2005-04-07 | BSH Bosch und Siemens Hausgeräte GmbH | Control for a cooking appliance |
| ES2371757T3 (en) * | 2005-09-21 | 2012-01-09 | Whirlpool Corporation | METHOD OF OPERATION OF AN OVEN THAT HAS A HEATING SYSTEM, A MICROWAVE SYSTEM AND A STEAM SYSTEM. |
| DE502008003280D1 (en) * | 2008-06-20 | 2011-06-01 | Topinox Sarl | Method for adjusting the microwave power in a microwave cooking appliance as a function of the measured core temperature and cooking appliance for this purpose |
| DE102009026446A1 (en) * | 2009-05-25 | 2010-12-09 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating an oven and home appliance with an oven |
| ES2590428B1 (en) * | 2015-05-21 | 2017-09-07 | Bsh Electrodomésticos España, S.A. | Cooking battery and cooking system |
| ES2590381B1 (en) | 2015-05-21 | 2017-09-07 | Bsh Electrodomésticos España, S.A. | Cooking battery |
| CN109253475B (en) * | 2018-09-27 | 2020-07-03 | 广东美的厨房电器制造有限公司 | Control method, cooking apparatus, and computer-readable storage medium |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783219A (en) * | 1970-11-11 | 1974-01-01 | Sharp Kk | Air cooled microwave cooking oven and door |
| JPS5582236A (en) * | 1978-12-14 | 1980-06-20 | Sanyo Electric Co Ltd | Cooking range with electronic controller |
| US4396817A (en) * | 1980-03-31 | 1983-08-02 | Litton Systems, Inc. | Method of browning food in a microwave oven |
| ATE22769T1 (en) * | 1981-06-05 | 1986-10-15 | Litton Systems Inc | METHOD OF BROWNING FOOD IN A MICROWAVE OVEN. |
| DE3276669D1 (en) * | 1982-04-30 | 1987-08-06 | Matsushita Electric Ind Co Ltd | Microwave oven |
| JPH0697096B2 (en) * | 1986-03-20 | 1994-11-30 | 松下電器産業株式会社 | Heating device |
| CA1300237C (en) * | 1987-01-16 | 1992-05-05 | Kenzo Ohji | Cooking apparatus |
| DE3701308A1 (en) * | 1987-01-17 | 1988-07-28 | Buderus Ag | Arrangement for inputting different modes of operation and program sequences into an apparatus for warming and/or cooking food |
| DE3883417T2 (en) * | 1987-04-30 | 1993-12-16 | Matsushita Electric Ind Co Ltd | Automatic heater. |
| KR930001675B1 (en) * | 1989-04-14 | 1993-03-08 | 가부시끼가이샤 히다찌세이사꾸쇼 | Automatic cooking system for a microwave range white balance control device of video camera |
| JPH03221727A (en) * | 1990-01-29 | 1991-09-30 | Brother Ind Ltd | Method for cooking raw potatoe with skin in oven range and apparatus for cooking them |
-
1993
- 1993-02-02 FR FR9301114A patent/FR2701093B1/en not_active Expired - Fee Related
-
1994
- 1994-01-26 EP EP94101110A patent/EP0609762B1/en not_active Expired - Lifetime
- 1994-01-26 DE DE69424198T patent/DE69424198T2/en not_active Expired - Fee Related
- 1994-02-01 JP JP01020494A patent/JP3817276B2/en not_active Expired - Fee Related
- 1994-02-02 US US08/190,373 patent/US5408075A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69424198T2 (en) | 2000-09-21 |
| FR2701093B1 (en) | 1995-04-14 |
| FR2701093A1 (en) | 1994-08-05 |
| DE69424198D1 (en) | 2000-06-08 |
| US5408075A (en) | 1995-04-18 |
| EP0609762A1 (en) | 1994-08-10 |
| JP3817276B2 (en) | 2006-09-06 |
| JPH06294519A (en) | 1994-10-21 |
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