EP2469172B1 - Poste de cuisson au gaz doté d'une commande automatique - Google Patents

Poste de cuisson au gaz doté d'une commande automatique Download PDF

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Publication number
EP2469172B1
EP2469172B1 EP11193143.2A EP11193143A EP2469172B1 EP 2469172 B1 EP2469172 B1 EP 2469172B1 EP 11193143 A EP11193143 A EP 11193143A EP 2469172 B1 EP2469172 B1 EP 2469172B1
Authority
EP
European Patent Office
Prior art keywords
gas
control apparatus
cooking zone
gas burner
cooking
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
EP11193143.2A
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German (de)
English (en)
Other versions
EP2469172A2 (fr
EP2469172A3 (fr
Inventor
Luis Acosta Herrero
Ainhoa De Carlos Negro
Pedro Herrera Estrada
Jose Leon Garcia
Alberto Lopez Ortiz
Luis Antonio Palacios Valdueza
Emilio Placer Maruri
Almudena Verdeja Galnares
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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.)
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2469172A2 publication Critical patent/EP2469172A2/fr
Publication of EP2469172A3 publication Critical patent/EP2469172A3/fr
Application granted granted Critical
Publication of EP2469172B1 publication Critical patent/EP2469172B1/fr
Active legal-status Critical Current
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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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means

Definitions

  • the invention relates to a gas hob with at least one gas burner, a control device and a device operatively connected to the control device for the automatic sequential switching on and off of flames on the gas burner, wherein the control device comprises a device for automatic cooking assisted, wherein the control device has a user interface for setting at least one predetermined cooking program comprises.
  • Gas cookers of the type mentioned are, for example, gas hobs or gas stoves.
  • the gas hobs usually have several gas burners, which are supplied via a respective adjustment valve with gas.
  • the adjustment valves have a variable opening cross section, with which the gas burner per unit time supplied gas volume and thus the heat output of the burning at the gas burner flames can be adjusted.
  • the adjustment valves may be designed, for example, as manually operable gas taps.
  • the gas cooker has an electric control device which drives a drive of the adjusting valves, and the control device is connected to an electrical signal generating user interface, for example, an angle sensor connected to the rotary knob, a touch sensor or a slider.
  • an electrical signal generating user interface for example, an angle sensor connected to the rotary knob, a touch sensor or a slider.
  • XLO Extra Low
  • the gas flow to the gas burner is continuously interrupted and released. After each release of the gas flow, an automatic ignition of the gas flames takes place at the gas burner.
  • the interruption and release of the gas flow is controlled by the controller after the user of the gas cooker has set the XLO mode.
  • solutions are known in which the interruption and release of the gas flow by means of the adjustment valve itself, by means of a valve belonging to the adjustment solenoid valve unit or by means of a separate on-off valve.
  • Gas hobs with XLO mode are known both in combination with a manually adjustable adjustment valve, as well as in combination with an electrically adjustable adjustment valve in the art.
  • the DE 693 09 896 T2 discloses an automatic multi-burner stove with a control center which operates all the electro-mechanical devices making up the oven.
  • the control center allows automatic operation of the stove.
  • the US 6 018 150 A discloses an electronic control system for a fryer with a gas burner that can be pulsed in a program-assisted mode.
  • the WO 2009/062281 A1 discloses a control device for adjusting a temperature of a gas grill, wherein the control device controls the flow of a combustible medium.
  • the WO 01/29483 A1 discloses a gas hob with a controller that enables programmable self-sequential on / off (PWM) operation.
  • the DE 199 49 600 A1 discloses a gas-fired household appliance in the form of a cooking or baking apparatus with at least one gas burner and a gas adjusting means for Timed interrupted supply of gas to the gas burner for a low heat output.
  • a control device can set the opening width of a valve by a predetermined program.
  • the present invention has for its object to provide a gas hob available, which makes it easier for untrained operators to achieve good cooking results.
  • control device for program-assisted automatic cooking is configured such that at least one of the predetermined cooking programs prescribes the use of a particular gas burner.
  • Program-assisted automatic cooking means, for example, that the control device automatically determines and controls a power level and / or a power curve and / or a duration of the cooking process.
  • the operator can input, for example, the type of dish to be prepared or the type of cooking process to be carried out into the control device.
  • Such a control device is used according to the invention in a gas hob.
  • the control device comprises a user interface for setting at least one predetermined cooking program.
  • the cooking program can be defined, for example, by the type of dish to be prepared or by the nature of the cooking process to be performed.
  • the user interface is a display in combination with a suitable input device. For example, a combination of dialing and acknowledgment keys or a touch display can be considered.
  • the control device is configured such that at least one of the predetermined cooking programs prescribes the use of a particular gas burner.
  • the gas burners of a gas hob usually have different power ratings and depending on this also different Minimum benefits. Depending on the cooking process to be performed, the use of a particular gas burner is particularly advantageous.
  • the control device deprives the user of the selection of the correct gas burner and dictates which gas burner to use depending on the cooking program.
  • control device may be configured such that at least one of the predetermined cooking programs prescribes a certain cycle time for the sequential switching on and off of flames on the gas burner.
  • the cycle duration during the sequential switching on and off of the flames is to be understood as meaning the duration of a time period with the flames switched on plus the duration of the subsequent time period with the flames switched off.
  • a short cycle time has the advantage that the heat effect on the food is done fairly evenly.
  • An advantage of a long cycle time is a lower noise level by the sparks generated with each ignition of the gas flame, as well as a higher efficiency of the gas burner, since with each ignition of the gas flame is a short phase with non-optimal combustion history. In the control device for the respective cooking cycle optimum cycle is deposited.
  • control device is configured such that at least one of the predetermined cooking programs prescribes a certain ratio of on-time to off-time during the sequential on and off of flames on the gas burner. This ratio of turn-on time to turn-off time determines the heat output, averaged over time, with the gas burner.
  • An advantageous embodiment of the invention further provides that the gas hob a gas burner associated adjustment valve for the size of the gas flow rate when the flames are switched on, and the control device is configured such that at least one of the predetermined cooking programs prescribes a specific position of the adjusting valve.
  • the position of the adjustment valve specifies the heat output of the gas burner when the gas flames burn on the gas burner.
  • the position of the adjusting valve must therefore be checked both for cooking with continuously burning gas flames and for operation with automatically sequentially switching on and off flames. This can be done either by the control device actuating an actuator for setting the adjustment valve.
  • the adjustment valve is manually adjustable and the control device is connected to an electrical signal generator, which generates a dependent on the position of the adjustment valve signal.
  • the control device can provide an indication to the operator as to how to adjust the adjustment valve via an appropriate indication and also monitor the position of this adjustment valve by means of a suitable sensor.
  • the gas cooking point has a timer operatively connected to the control device for the automatic interruption of the gas supply to the gas burner after a predetermined time, and the control device is configured such that at least one of the predetermined cooking programs a complete interruption of the gas supply after one prescribed time.
  • the cooking process automatically ends after a certain period of time. This cooking time depends on the selected cooking program.
  • the control device controls the timer according to the selected cooking process.
  • the timer may also be an integral part of the control device.
  • a particularly expedient application of the invention is when at least one predetermined cooking program is defined as a defrost program.
  • a defrost program is a cooking program that is particularly well-suited for thawing frozen food on the gas hob without cooking all or part of the food.
  • an advantageous embodiment of the gas hob provides that the adjustment valve is manually adjustable and the control device is connected to an electrical signal generator, which generates a dependent on the position of the adjustment valve signal.
  • the adjustment valve is monitored electrically.
  • the control device is provided with a two-stage signal, a multi-stage signal or a continuously variable signal. In a two-stage signal generator can be detected, for example, whether the adjustment valve is in minimum position or not.
  • the gas cooking point further has a control device 9, which enables program-assisted automatic cooking.
  • the control device 9 is connected via a signal line 19 to a user interface 10.
  • This has an input device 11 and a display device 12 for programming the control device 9.
  • Input device 11 and display device 12 may also be designed to be combined in a single component, for example as a touch display.
  • Another input of the control device 9 is the signal of a flame sensor 16, which may be formed for example by a thermocouple.
  • the flame sensor 16 is coupled to the control device 9 via the signal line 18 and provides, whenever a gas flame burns on the gas burner 2, a voltage signal.
  • Another input signal of the control device 9 is the signal of a sensor 8, which detects the position of the adjustment valve 6.
  • the sensor 8 is connected to the control device 9 via the signal line 20.
  • the control device 9 has a signal line 23 for controlling the shut-off valve 5. Another output signal of the control device 9 is supplied via the signal line 17 to an ignition generator 22, which is connected via an ignition line 21 to an ignition electrode 15 of the burner. By means of the ignition electrode 15, the gas-air mixture flowing out of the gas burner 2 can be ignited.
  • the flames 3 on the gas burner 2 are continuously turned on and off by the control device 9.
  • the shut-off valve 5 is continuously opened by appropriate signals of the control device 9 and closed again. After each opening of the shut-off valve 5, the control device 9 controls the ignition generator 22, which then generates ignition spark at the ignition electrode 15.
  • the cooking program is automatically terminated.
  • the duration of the cooking program can either be set by the operator by means of the user interface 10, or be determined automatically by the control device 9. It is also possible that the control device 9, the duration of the cooking program as a function of parameters determined, which inputs the operator by means of the user interface 10. Such a parameter may be, for example, the mass of the food to be heated.
  • FIG. 2 shows schematically the sequence of a cooking program for thawing food by means of the gas hob.
  • the time is plotted on the right-hand axis of the chart.
  • the power P of the gas burner 2 is plotted on the vertical axis.
  • the gas burner 2 has a maximum power P max , which is achieved when the flames burn on the gas burner 2 of maximum size.
  • the minimum power P min of the gas burner 2 is achieved when the flames burn continuously on the gas burner 2 with the smallest possible flame size.
  • the controller 9 sequentially turns on and off the flames on the gas burner 2 (XLO mode). As a result, a heating power is achieved averaged over time, which is significantly lower than P min .
  • the control device 9 automatically ends the defrosting program. In the meantime, the flames on the gas burner 2 are turned on and off sequentially.
  • the duration of the switch-on time is in each case ⁇ t 1 .
  • the duration of each switch-off time is ⁇ t 2 .
  • the sum of the durations of a switch-on time ⁇ t 1 and the subsequent switch-off time ⁇ t 2 is the cycle duration T.
  • the cycle duration T is approximately 30 seconds.
  • the switch-on time ⁇ t 1 is approximately 20% of the cycle duration T.
  • the switch-off time ⁇ t 2 is consequently approximately 80% of the cycle duration T.
  • the gas burner 2 has a combustion output P min of approximately 330 watts.
  • the maximum output P max of the burner, which is not called up during the defrosting program, is approx. 1 kilowatt.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (13)

  1. Poste de cuisson à gaz avec au moins un brûleur à gaz (2), un dispositif de commande (9) et un dispositif d'allumage et d'extinction automatiques séquentiels de flammes au niveau du brûleur à gaz (2) en liaison fonctionnelle avec le dispositif de commande (9), dans lequel le dispositif de commande (9) présente un dispositif de cuisson automatique assisté par un programme, dans lequel le dispositif de commande (9) englobe une interface utilisateur (10) pour le réglage d'au moins un programme de cuisson prédéfini, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte qu'au moins un des programmes de cuisson prédéfinis prescrit l'utilisation d'un brûleur à gaz déterminé (2).
  2. Poste de cuisson à gaz selon la revendication 1, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte qu'au moins un des programmes de cuisson prédéfinis prescrit une durée de cycle déterminée pour l'allumage et l'extinction séquentiels de flammes au niveau du brûleur à gaz (2).
  3. Poste de cuisson à gaz selon la revendication 1, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte qu'au moins un des programmes de cuisson prédéfinis prescrit un rapport déterminé entre la durée d'allumage (Δt1) et la durée d'extinction (Δt2) durant l'allumage et l'extinction séquentiels de flammes au niveau du brûleur à gaz (2).
  4. Poste de cuisson à gaz selon l'une des revendications 1 à 3, caractérisé en ce que le poste de cuisson à gaz présente une soupape de réglage (6) affectée au brûleur à gaz (2) pour l'ampleur du débit volumique de gaz en présence de flammes et le dispositif de commande (9) est configuré de telle sorte qu'au moins un des programmes de cuisson prédéfinis prescrit une position déterminée de la soupape de réglage (6).
  5. Poste de cuisson à gaz selon l'une des revendications 1 à 4, caractérisé en ce que la soupape de réglage (6) est réglable manuellement et le dispositif de commande (9) est relié à un générateur de signal électrique (8), lequel génère un signal dépendant de la position de la soupape de réglage (6).
  6. Poste de cuisson à gaz selon l'une des revendications 1 à 5, caractérisé en ce que le poste de cuisson à gaz présente une minuterie en liaison fonctionnelle avec le dispositif de commande (9) pour l'interruption automatique de l'apport en gaz vers le brûleur à gaz (2) après une durée prédéfinie, et le dispositif de commande (9) est configuré de telle sorte qu'au moins un des programmes de cuisson prédéfinis prescrit une interruption complète de l'apport en gaz après une durée prédéfinie.
  7. Poste de cuisson à gaz selon l'une des revendications 1 à 6, caractérisé en ce qu'au moins un programme de cuisson prédéfini est défini comme programme de décongélation.
  8. Poste de cuisson à gaz selon la revendication 7, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte que le programme de décongélation prescrit l'utilisation d'un brûleur à gaz (2) avec une puissance maximale (Pmax) entre 800 W et 1200 W, de préférence entre 900 W et 1100 W.
  9. Poste de cuisson à gaz selon la revendication 7 ou 8, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte que le programme de décongélation prescrit une durée de cycle (T) entre 20 et 40 secondes, de préférence entre 25 et 35 secondes, pour l'allumage et l'extinction séquentiels de flammes au niveau du brûleur à gaz (2).
  10. Poste de cuisson à gaz selon la revendication 9, caractérisé en ce que le dispositif de commande (9) est configuré de telle sorte que le programme de décongélation prescrit un rapport entre la durée d'allumage (Δt1) et la durée d'extinction (Δt2) entre 10/90 et 25/75, de préférence entre 15/85 et 20/80, durant l'allumage et l'extinction séquentiels de flammes au niveau du brûleur à gaz (2).
  11. Poste de cuisson à gaz selon l'une des revendications 7 à 10, caractérisé en ce que le poste de cuisson à gaz présente une soupape de réglage (6) affectée au brûleur à gaz (2) pour l'ampleur du débit volumique de gaz en présence de flammes et le dispositif de commande (9) est configuré de telle sorte que le programme de décongélation prescrit une position minimale de la soupape de réglage (6).
  12. Poste de cuisson à gaz selon l'une des revendications 7 à 11, caractérisé en ce que la soupape de réglage (6) est réglable manuellement et le dispositif de commande (9) est relié à un générateur de signal électrique (8), lequel génère un signal dépendant de la position de la soupape de réglage (6).
  13. Poste de cuisson à gaz selon l'une des revendications 7 à 12, caractérisé en ce que le poste de cuisson à gaz présente une minuterie en liaison fonctionnelle avec le dispositif de commande (9) pour l'interruption automatique de l'apport en gaz vers le brûleur à gaz (2) après une durée prédéfinie, et le dispositif de commande (9) est configuré de telle sorte que le programme de décongélation prescrit une interruption complète de l'apport en gaz après une durée prédéfinie, déterminée en fonction d'un poids d'une denrée alimentaire à décongeler.
EP11193143.2A 2010-12-21 2011-12-13 Poste de cuisson au gaz doté d'une commande automatique Active EP2469172B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031891A ES2407592R1 (es) 2010-12-21 2010-12-21 Punto de cocción a gas con un mando automático

Publications (3)

Publication Number Publication Date
EP2469172A2 EP2469172A2 (fr) 2012-06-27
EP2469172A3 EP2469172A3 (fr) 2015-03-11
EP2469172B1 true EP2469172B1 (fr) 2018-02-21

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EP11193143.2A Active EP2469172B1 (fr) 2010-12-21 2011-12-13 Poste de cuisson au gaz doté d'une commande automatique

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EP (1) EP2469172B1 (fr)
ES (1) ES2407592R1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2703723B2 (fr) 2012-08-28 2023-07-19 Electrolux Home Products Corporation N.V. Procédé de fonctionnement d'un brûleur à gaz d'un appareil de cuisson
EP2708816A3 (fr) * 2012-09-14 2017-12-27 Turas Gaz Armatürleri Sanayi. Ve Ticaret A.S. Une touche système sensible de contrôle du gaz et un robinet de gaz de came pour appareils de cuisson domestiques
US11421874B2 (en) 2019-03-19 2022-08-23 Midea Group Co., Ltd. Digital gas valve burner control systems and methods

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EP0078325B1 (fr) * 1981-05-13 1986-12-17 Matsushita Electric Industrial Co., Ltd. Appareil chauffant
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FR2756908A1 (fr) * 1996-12-10 1998-06-12 Morice & Cie Traitogaz Dispositif de commande pour appareils de cuisson a gaz
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Also Published As

Publication number Publication date
EP2469172A2 (fr) 2012-06-27
ES2407592A2 (es) 2013-06-13
ES2407592R1 (es) 2013-06-28
EP2469172A3 (fr) 2015-03-11

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