EP2469184B1 - Procédé de fonctionnement d'un appareil de cuisson - Google Patents

Procédé de fonctionnement d'un appareil de cuisson Download PDF

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Publication number
EP2469184B1
EP2469184B1 EP10401222.4A EP10401222A EP2469184B1 EP 2469184 B1 EP2469184 B1 EP 2469184B1 EP 10401222 A EP10401222 A EP 10401222A EP 2469184 B1 EP2469184 B1 EP 2469184B1
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EP
European Patent Office
Prior art keywords
temperature
catalyst
cooking
reaction
determined
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.)
Active
Application number
EP10401222.4A
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German (de)
English (en)
Other versions
EP2469184A1 (fr
Inventor
Torben Becker
Uwe Femmer
Jahn Heymann
Andree Megger
Jürgen Scharmann
Ulrich Sillmen
Krümpelmann
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.)
Miele und Cie KG
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Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL10401222T priority Critical patent/PL2469184T3/pl
Priority to EP10401222.4A priority patent/EP2469184B1/fr
Priority to ES10401222.4T priority patent/ES2549391T3/es
Publication of EP2469184A1 publication Critical patent/EP2469184A1/fr
Application granted granted Critical
Publication of EP2469184B1 publication Critical patent/EP2469184B1/fr
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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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • 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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
    • F24C15/205—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft with means for oxidation of cooking fumes

Definitions

  • the present invention relates to a method for operating a cooking appliance with a heatable cooking chamber, a cooking chamber closing the door, a catalyst device and a control device.
  • Cooking appliances are subject to a constant process of development in order to give the user the greatest possible comfort in the preparation of food.
  • cooking appliances are equipped with many supporting functions to facilitate the preparation of food and to improve the result of a cooking process.
  • automatic programs in cooking appliances such as an oven, offered to assist the user in the preparation of food.
  • the automatic programs can be designed so that a user selects only a product that he wants to prepare from, for example, a predetermined list and then ⁇ end only has to start the cooking process.
  • All basic settings of the oven for the appropriate preparation can then be specified by the automatic program.
  • a user then does not have to manually set the operating mode, the temperature or other parameters. He could, for example, simply select the automatic program for a cake in the display of the cooking appliance and otherwise would not have to make any further adjustments to the cooking appliance.
  • a core temperature sensor or an O 2 sensor are used to draw conclusions about the state of food of a food.
  • a core temperature probe is only suitable for certain foods and is not very comfortable because the sensor must be inserted into the food at the beginning of a cooking process or even after a certain time.
  • a Kemtemperaturterler represents a separate accessory, which is often not very important for customers.
  • An O 2 sensor indirectly detects the proportion of relative humidity in the vapor, and this method makes use of the fact that the maximum moisture is usually delivered in the time proximity of the finished time.
  • a method for determining the first steam outlet from a cooking chamber opening is also based on the liquid emerging from the food during the cooking process.
  • these methods which adapt the cooking process to the resulting moisture, are in particular not suitable for dishes which have a high liquid content. For example, when a piece of meat is braised in a sauce, such methods do not provide reliable results.
  • the EP 1 191 286 A2 discloses a cooking appliance comprising a sensor for gas analysis in the cooking chamber.
  • the sensors used here are generally sensors of an adsorption spectrum analysis type or catalyst / resistance types.
  • the US 6 232 584 B1 discloses a cooking appliance and a method of operating a cooking appliance disclosed.
  • the known cooking appliance comprises a cooking chamber and a control device which controls or terminates a pyrolysis process as a function of temperature values in the exhaust gas flow.
  • the values in the exhaust gas stream are detected and evaluated at the inlet opening of the catalyst and at the outlet opening. Based on the phase profile of the two temperature signals to each other conclusions can be drawn on the Pyrotysevorgang.
  • the inventive method is suitable for operating a cooking appliance, which has at least one cooking chamber.
  • the cooking chamber becomes thermal with at least one heating source heated. So that the heat is held in the cooking chamber, the cooking chamber can be closed by means of at least one door.
  • a control device is provided with which the cooking appliance is controlled. The control device also derives the end point of a cooking process from the values determined during a catalyst reaction at a catalyst device.
  • Such ausgestaltetes cooking appliance offers many advantages.
  • a significant advantage is that the finished time of the cooking process can be determined automatically and reliably by the values determined on the catalyst device. This ensures that the automatic programs not only make the setting of the required parameters for a cooking process, but that the end of the cooking process can be well matched to the food to be cooked in each case. This allows a user to start a cooking process and then not necessarily be within the reach of the cooking appliance.
  • the control device derives the finish time of the cooking process from the values which are determined during the cooking process on the catalyst device, this method for determining the finish time point is very reliable. These values are determined by the food to be cooked, since different catalyst reactions take place depending on the composition and amount of the food. Therefore, the method according to the invention provides a very reliable method for determining the finish time.
  • At least one characteristic temperature of the catalyst device is determined with at least one temperature sensor.
  • a characteristic temperature can be, for example, the operating or operating temperature of the catalyst device.
  • the characteristic temperature is also the maximum temperature that occurs during a catalyst reaction.
  • Other characteristic temperatures also provide a beneficial value.
  • the characteristic temperature can also be determined by calculation from the temperature profile of a catalyst reaction, for example by averaging.
  • the course of the catalyst reaction is determined for this purpose.
  • the characteristics of the reaction curve may look different. Therefore, determining the reaction curve is advantageous to determine the finish time of a cooking process.
  • larger temperature differences longer or shorter reactions or even more catalyst reactions occur.
  • alcohol emitted in the vapors and various fat compositions react differently.
  • the correlate Times at which the reaction curves have extreme values for example maxima in the course of the temperature, particularly advantageous with the finish time of the cooking process.
  • the temperature sensor determines a catalyst reaction via a significant increase in temperature of the catalyst device and registers the associated time. If, for example, alcohol produced in the vapors during the baking of a cake by the yeast is released, it reacts violently in the catalyst device. As a result, the temperature of the catalyst device increases significantly, whereby the presence of a catalyst reaction can be well determined. It is also conceivable that the duration and / or the strength of the catalyst reaction is used as a characteristic for the assessment of the cooking process.
  • the inventive possibility for detecting a catalyst reaction and the time at which it takes place is the evaluation of the control difference of the radiator output of a radiator associated with the catalyst device.
  • a catalyst device works particularly effectively when it is heated to a certain operating temperature.
  • one of the catalyst device associated radiator must be operated in a certain Schutaktung or with a certain heat output, so that the desired operating temperature of the catalyst device is achieved. If there is a catalyst reaction in the catalyst, heat energy is generated, which makes it unnecessary to activate the heating element during the catalyst reaction, since no additional heat is required in order to achieve the desired operating temperature of the catalyst device. As a result, a catalyst reaction can be determined.
  • the catalyst device In order to determine a catalyst reaction, it is furthermore advantageous and preferred for the catalyst device to be kept at a constant working temperature. Thus, differences in the power required can be determined to determine the presence of a reaction in the catalyst device.
  • control device controls a radiator assigned to the catalyst device for this purpose.
  • the catalyst device is maintained on the one hand at working temperature, on the other hand, the end point of the cooking process can be derived by means of the control data and the values determined therefrom.
  • the temperature difference between the working temperature and at least one characteristic reaction temperature is determined.
  • the difference between the maximum reaction temperature and the working temperature is suitable to draw conclusions about the food, the amount of food and deduce from this the ready time of the cooking process.
  • other characteristic reaction temperatures can also be used advantageously.
  • the average temperature determined via the reaction can also be used to determine the finish time.
  • the period of time between the start of the cooking process and the achievement of a characteristic reaction temperature is preferably measured.
  • the characteristic reaction temperature may in particular be the maximum reaction temperature again.
  • the cooking process is particularly preferably continued for a predetermined period of time.
  • the predetermined period of time may depend on the food to be cooked and is made available in particular in a database for appropriate cooking operations. In particular, such values have previously been determined experimentally for a corresponding foodstuff.
  • the finish time of the cooking process is defined in particularly preferred embodiments over a further period of time.
  • a residual period of time until the end of the cooking process is determined from the characteristic of the catalyst reaction in conjunction with the time until the characteristic reaction temperature is reached. From the time to reach the catalyst reaction information can be drawn regarding the nature and amount of food to be cooked. Based on the characteristic of the catalyst reaction, the time until the catalyst reaction is reached can then be set in relation to a specific factor. This factor results either directly from the characteristic of the catalyst reaction or is made available on the basis of the characteristic from a database.
  • the automatic pyrolysis processes and the characteristic working temperature are controlled via the values determined using the temperature sensor. Smoke produced during pyrolysis is converted in the catalytic converter. If there is no more smoke, no catalyst reaction takes place. Then the pyrolysis can be stopped.
  • the cooking appliance comprises at least one cooking chamber, which can be closed by at least one door closing the cooking chamber.
  • the cooking chamber can be heated with at least one radiator.
  • the cooking appliance further comprises at least one catalyst device and at least one temperature sensor for detecting a characteristic temperature of the catalyst device.
  • At least one control device is provided, which is suitable and designed to derive the end point of the cooking process from the values determined during a catalyst reaction at the catalyst device.
  • the cooking appliance offers many advantages.
  • a considerable advantage is that the control device can reliably determine the finished time of the cooking process by means of the determined values during a catalytic reaction.
  • the values determined are determined by the food to be cooked, which results in particularly accurate results for the ready-to-eat time of the food to be cooked.
  • different catalyst reactions take place. Therefore, the method according to the invention provides a very reliable method for determining the finish time.
  • control device is suitable and designed to operate the one of the catalyst device associated radiator in particular clocked.
  • a constant operating temperature of the catalyst direction can be achieved.
  • FIG. 1 is a cooking appliance 1 shown in a strong perspective view, which is designed here as a stove 20 and a stand-alone device.
  • the cooking appliance 1 has a housing 15, on which a cooking chamber 2 is provided, which can be closed with a door 4. When the door 4 is open, a food can be introduced into the cooking chamber 2. In the oven, the food can then be prepared using, for example, top and / or bottom heat, a convection or grill function.
  • a hob 16 On the stove, a hob 16 is arranged, which is divided into several cooking zones 17. You can make the desired settings for cooking over some controls 18 on a control panel 19.
  • the control panel 19 may also include a display device such as a display on which the current state of the cooking appliance 1 and the set parameters can be displayed.
  • FIG. 2 1 shows a cooking appliance 1 in a perspective schematic view, which in the present case is designed as a baking oven 30 suitable for installation.
  • the surrounding the cooking chamber 2 housing 15 can in turn be surrounded by a furniture body, not shown here.
  • the cooking appliance 1 is shown with half open door 4.
  • Above the cooking chamber 2 is space for a not visible here control device 5 and a catalyst device 6.
  • the electronics of the controller 4 is cooled by a device cooling 15.
  • FIG. 3 shows a catalyst device 6, which communicates with a control device 5.
  • the catalyst device 6 is surrounded by a housing 24 in which a catalyst honeycomb 23 can be seen above a radiator 12.
  • the radiator 12 includes several heating elements 22.
  • the radiator 12 may also be configured in any other suitable manner. The same applies to the number and arrangement of the catalyst honeycomb 23, if any such are provided in the catalyst device 6.
  • a temperature sensor 9 is further provided.
  • the temperature sensor 9 measures the temperature of the catalyst device 6, wherein these values can be evaluated by the control device 5 and represented, for example, as a temperature profile 25.
  • the control device 5 is suitable for clocking the radiator 12 of the catalyst device 6 or also to operate it constantly. Via the temperature sensor 9, the temperature of the catalyst device 6 is measured and the control device 5 adjusts the heating power or the timing of the radiator 12 accordingly.
  • the graph shown shows an evaluation 26 of the temperature profile 25 of the catalyst device 6.
  • the values 7 determined by the temperature sensor 9 were converted by the control device 5 into a curve representation 27.
  • the upper curve shows the time profile of the cooking chamber temperature 28.
  • the curve below shows the values 7 determined by the temperature sensor 9, which are determined by the control device 5 in FIG a temperature profile 25 have been converted.
  • the temperature of the catalyst device 6 rises steadily up to the working temperature 13. At this temperature, the catalyst device 6 is then kept constant. This is also done by the control device 5, the values of the temperature sensor 9 used for this purpose and the radiator 12 either clocked or constant but also operates.
  • a catalytic reaction 100 occurs at a certain time, which can be detected, for example, by a rise in temperature 11.
  • a catalyst reaction occurs, alcohol produced by the yeast during baking of a cake has been released into the vapor which then reacts in the catalyst means 6, raising the temperature to a characteristic value 10 at the characteristic time t1. It may be advantageous to switch off the heating element 12 in each case when measuring the temperature in order to obtain a more sensitive evaluation.
  • a catalyst reaction 100 takes place at a certain time and has different characteristics.
  • the temperature difference 14 may be different from the working temperature. This depends on the composition and amount of the food and also on the texture e.g. the geometry of the cooking vessel from. The larger, for example, the opening of a cooking vessel, the faster such a reaction 100 will take place or the more pronounced the reaction can be 100.
  • the time period t 1 between the start of the cooking process and the achievement of the characteristic temperature 10 is measured. Subsequently, the cooking process is continued for a predetermined time t 2 . This period of time t 2 may have previously been determined experimentally for such a cooking process. Then the Control device 5 retrieve the corresponding value for the period t 2 from a database.
  • the remaining cooking time t 3 is then based on the time t 1 to reach the catalyst reaction 100, which is set with a factor specific to the catalyst reaction 100 in a ratio. This results in the time t 3 , which is still necessary until the end of a cooking process.
  • the specific factor may again vary depending on the cooking process or food. This factor can then be retrieved in the embodiment shown here by the control device 5 from a database.
  • the corresponding factors as well as the predetermined time intervals t 2 are expediently determined experimentally by experts at least for the most common cooking processes.
  • FIG. 5 shows the time t 1 to a catalyst reaction 100 of a particular food.
  • the time span t 1 for the same food is shown dotted when a small amount is added to the oven for cooking. For example, if you bake a cake, the time to reach the catalyst reaction 100 is equal to the time t 1 of the solid curve. For example, with half of the dough, the dashed curve could indicate catalyst reaction 100. Since the remaining cooking time t 3 is determined by way of this value t 1 in conjunction with a specific factor, it is reliably ensured that both the type and the quantity of the food are taken into account in the determination of the finish time 8.
  • FIG. 6 another case is shown in which several catalyst reactions take place during a cooking process.
  • two catalyst reactions 100 take place, but have the same characteristics. This is not absolutely necessary since, depending on the composition, a food can deliver different substances at different times in the vapors, as a result of which several catalytic reactions 100 can take place whose characteristic temperatures 10 can also be different.
  • the time interval t 1 is again measured until the first catalyst reaction.
  • a further time interval t 1.1 is determined, which corresponds to the time between the first and the second characteristic temperature 10 of the two catalyst reactions 100.
  • the cooking process is continued again for a predetermined time.
  • the last time period t 3 to the finish time 8 of the cooking process is then determined again over the time t 1 , which is then set, for example, in relation to a factor which derives from the two catalyst reactions 100.
  • the control device 5 derive this factor again from a database. It is conceivable also, that in the case of several catalyst reactions 100, the total time interval t 1 , t 1.1 of the catalyst reactions 100 is set in relation to the corresponding factor.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)

Claims (9)

  1. Procédé de fonctionnement d'un appareil de cuisson (1),
    dans lequel l'appareil de cuisson (1) comprend au moins une chambre de cuisson (2) et est commandé avec au moins un dispositif de commande (5),
    dans lequel la chambre de cuisson (2) est chauffée thermiquement avec au moins une source de chauffage (3) et est fermée au moyen d'au moins une porte (4),
    dans lequel l'appareil de cuisson comprend au moins un dispositif catalyseur (6) et au moins un capteur de température (9) pour la détection d'au moins une température caractéristique du dispositif catalyseur,
    dans lequel les valeurs mesurées par le capteur de température sont analysées par le dispositif de commande,
    caractérisé en ce
    qu'un corps chauffant (12) est affecté au dispositif catalyseur et chauffe le dispositif catalyseur à une température de travail définie, dans lequel le dispositif de commande pilote le corps chauffant en fonction des valeurs mesurées par le capteur de température et le fait fonctionner avec un cadencement de chauffage défini ou avec une puissance de chauffage définie pour maintenir le dispositif catalyseur à la température de travail,
    et en ce que le cadencement de chauffage n'est pas piloté quand le dispositif catalyseur atteint la température de travail en raison de l'énergie thermique apparaissant lors d'une réaction de catalyseur,
    et en ce que la présence d'une réaction de catalyseur est constatée par le dispositif de commande au moyen des données de pilotage et des valeurs qui sont déterminées à partir de celles-ci, et en ce que le point final d'un processus de cuisson est dérivé.
  2. Procédé selon la revendication précédente,
    caractérisé en ce qu'au moins une température caractéristique (10) du dispositif catalyseur (6) est détectée avec le capteur de température (9) au moins au nombre de un,
    dans lequel la température caractéristique (10) est la température de travail du dispositif catalyseur ou la température maximale qui apparaît pendant une réaction de catalyseur,
    ou en ce que la température caractéristique (10) est formée en tant que valeur moyenne par voie de calcul à partir de la courbe de température d'une réaction de catalyseur ou est déterminée en tant que différence entre la température de travail et la température de réaction maximale.
  3. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la courbe temporelle (10) de la réaction de catalyseur (100) est déterminée.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la réaction de catalyseur (100) est déterminée par le biais d'une augmentation de température (11) du dispositif catalyseur (6).
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que le corps chauffant (12) est mis hors circuit à chaque fois lors de la mesure de la température.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la période (n) entre le départ du processus de cuisson et l'obtention d'une température de réaction (10) caractéristique est mesurée.
  7. Procédé selon la revendication précédente,
    caractérisé en ce que le processus de cuisson est poursuivi pendant une période (t2) prédéfinie après la réaction de catalyseur (100).
  8. Procédé selon la revendication précédente,
    caractérisé en ce
    qu'une période (t3) restante jusqu'à la fin du processus de cuisson est déterminée à partir de la caractéristique de la réaction de catalyseur (100) en liaison avec la période (n) jusqu'à l'obtention de la température de réaction (10) caractéristique.
  9. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    les processus de pyrolyse et la température de travail (13) sont commandés par le biais des valeurs (7) déterminées avec le capteur de température (9).
EP10401222.4A 2010-12-23 2010-12-23 Procédé de fonctionnement d'un appareil de cuisson Active EP2469184B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL10401222T PL2469184T3 (pl) 2010-12-23 2010-12-23 Sposób eksploatacji urządzenia do gotowania
EP10401222.4A EP2469184B1 (fr) 2010-12-23 2010-12-23 Procédé de fonctionnement d'un appareil de cuisson
ES10401222.4T ES2549391T3 (es) 2010-12-23 2010-12-23 Procedimiento para hacer funcionar un aparato de cocción

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10401222.4A EP2469184B1 (fr) 2010-12-23 2010-12-23 Procédé de fonctionnement d'un appareil de cuisson

Publications (2)

Publication Number Publication Date
EP2469184A1 EP2469184A1 (fr) 2012-06-27
EP2469184B1 true EP2469184B1 (fr) 2015-08-12

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Application Number Title Priority Date Filing Date
EP10401222.4A Active EP2469184B1 (fr) 2010-12-23 2010-12-23 Procédé de fonctionnement d'un appareil de cuisson

Country Status (3)

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EP (1) EP2469184B1 (fr)
ES (1) ES2549391T3 (fr)
PL (1) PL2469184T3 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH043812A (ja) * 1990-04-19 1992-01-08 Mitsubishi Electric Home Appliance Co Ltd 加熱調理装置
EP0455169B1 (fr) * 1990-04-28 1996-06-19 Kabushiki Kaisha Toshiba Cuisinière à chauffage
DE19706186A1 (de) * 1997-02-17 1998-08-20 Miele & Cie Backofen und Verfahren zur Steuerung eines Pyrolysereinigungsvorganges
US6232584B1 (en) * 1999-12-15 2001-05-15 Whirlpool Corporation System for controlling a self cleaning oven having catalyst temperature control
IT250446Y1 (it) * 2000-09-20 2003-09-10 Whirlpool Co Forno provvisto di analizzatore dell'aria presente nella sua camera di cottura
DE10232133A1 (de) * 2002-07-11 2004-01-22 E.G.O. Elektro-Gerätebau GmbH Zusatzstoff zur Zubereitung von Nahrungsmitteln, Nahrungsmittelvorbereitung sowie Verfahren zur Erkennung des Zustands eines Nahrungsmittel und Backofen
EP1595453A1 (fr) * 2004-05-10 2005-11-16 SMEG S.p.A. Procédé de commande automatique pour la cuisson de produits alimentaires dans un four, et four à commande automatique
DE102005011305A1 (de) * 2005-03-07 2006-09-14 E.G.O. Elektro-Gerätebau GmbH Verfahren und Vorrichtung zur Regelung von Garvorgängen in einem Garraum
JP2010071615A (ja) * 2008-09-22 2010-04-02 Mitsubishi Electric Corp 加熱調理器
JP2010203645A (ja) * 2009-03-02 2010-09-16 Sharp Corp 加熱調理器

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Publication number Publication date
EP2469184A1 (fr) 2012-06-27
ES2549391T3 (es) 2015-10-27
PL2469184T3 (pl) 2015-12-31

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