EP2461105B1 - Appareil de cuisson - Google Patents

Appareil de cuisson Download PDF

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Publication number
EP2461105B1
EP2461105B1 EP10382324.1A EP10382324A EP2461105B1 EP 2461105 B1 EP2461105 B1 EP 2461105B1 EP 10382324 A EP10382324 A EP 10382324A EP 2461105 B1 EP2461105 B1 EP 2461105B1
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EP
European Patent Office
Prior art keywords
switch
supply unit
connection
actuator
switches
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
EP10382324.1A
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German (de)
English (en)
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EP2461105A1 (fr
Inventor
Pedro Mª Echeverría Remón
Gonzalo José Fernández Llona
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.)
Coprecitec SL
Original Assignee
Coprecitec SL
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 Coprecitec SL filed Critical Coprecitec SL
Priority to EP10382324.1A priority Critical patent/EP2461105B1/fr
Publication of EP2461105A1 publication Critical patent/EP2461105A1/fr
Application granted granted Critical
Publication of EP2461105B1 publication Critical patent/EP2461105B1/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
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops
    • 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
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • This invention relates to cooking appliances, and in particular to cooking appliances comprising a plurality of heat sources with associated actuators, each actuator comprising at least one switch.
  • Conventional cooking appliances are connected to an external power supply, generally to a main alternating voltage supply, through which they are powered.
  • Said appliances comprise at least one heat source associated to an actuator, generally a manual one, and on which a user acts to activate or deactivate it, generally corresponding with a tap or handle.
  • Each actuator also comprises an associated switch, so that when said actuator is operated by a user, it closes or opens an electrical circuit associated to the corresponding switch.
  • each actuator comprises an associated switch whose state changes when said actuator is operated, so that the switch has two positions: closed when the actuator is on (when it is being operated), or open when said actuator is off (when it is not being operated).
  • US 4634843 A discloses a cooking appliance comprising a plurality of heat sources, and each heat source comprises an associated actuator that is operated by a user to act on it.
  • JPS5831689U1 discloses a cooking appliance comprising a plurality of heat sources, each heat source comprising an associated switch, and a connection to an external power supply through which said appliance is powered, and which comprises at least two terminals, each switch being connected in series to the connection so that the appliance does not consume energy from the external power supply unless at least one switch is acted on.
  • the cooking appliance of the invention comprises multiple heat sources, actuators associated to the heat sources, which is operated by a user to act on said heat source and which comprises an associated switch whose state changes when said actuator is acted on, and a connection to an external power supply through which said appliance is powered, and which comprises at least two terminals.
  • the switch associated to the actuator is connected in series to the connection, at least to one of the terminals of said connection, so that unless the actuator is acted on, the appliance does not consume energy from the external power supply due to the fact that the electrical circuit through which said appliance is connected to said power supply is not closed.
  • the appliance of the invention consumes no energy unless the user wishes to switch on a heat source, for which purpose the user acts on the associated actuator, thereby resulting in said appliance not consuming energy if it is not being used.
  • no type of supply is required in order to switch on or start the appliance, so that said appliance is switched off, without consuming any energy at all, in a situation in which the appliances in the prior art are on standby and consuming energy.
  • the cooking appliance 100 of the invention is used to cook and/or heat food, and comprises heat sources 1, an actuator 2 associated to each heat source 1 and which is operated by a user to act on the corresponding heat source 1 and which comprises at least one associated switch 3 whose state changes when the user acts on said actuator 2, and a connection I to an external power supply through which said appliance 100 is powered, and which comprises at least two terminals T1 and T2.
  • FIG 1 partially shows an arrangement of the cooking appliance 100 of the invention, which corresponds by way of example with an appliance 100 that comprises three heat sources 1, comprising three actuators 2 (one for each heat source 1), each actuator 2 preferably corresponding with a tap or handle.
  • the user thus acts on an actuator 2 to activate it when he/she wishes to switch on a heat source 1, or to deactivate it when he/she wishes to switch off said heat source 1.
  • the heat source 1 of the appliance 100 may be of gas, electrical, of the induction type, or, when there is more than one heat source 1, said heat sources 1 may also be a combination of the three types mentioned, for example.
  • the rest of the figures in the application represent an appliance 100 with three heat sources 1, such as the one shown in Figure 1 .
  • the switch 3 associated to the actuator 2 is connected in series with at least one of the switches T1 or T2 of the connection I, so that the appliance 100 does not consume energy from the external power supply unless the actuator 2 is acted on. As a result, the appliance 100 does not consume any energy unless a user acts on it, thereby preventing said appliance from consuming energy on standby.
  • the appliance 100 comprises a supply unit 5 adapted to adapt the voltage it receives from the external power supply through the connection l to all the voltages necessary in the appliance 100, such as continuous voltages such as 3.3V, 5V or 12V, and at the necessary power levels.
  • the external power supply corresponds with the main alternating voltage supply, said connection l acting as a socket, although it may also be another type of external power supply, such as a continuous voltage supply.
  • the appliance 100 comprises a plurality of heat sources 1, each heat source 1 comprising associated actuators 2 that is operated by a user to act on the corresponding heat source 1 and which, in a first embodiment shown in Figures 2 to 5 and in a second embodiment shown in Figures 6 to 8 , comprises a single associated switch 3 whose state changes when the user acts on said actuator 2.
  • the appliance 100 also comprises a control unit 4 adapted, when at least one of the actuators 2 has been operated on, to detect a change of state of the switches 3 and to identify which actuator 2 (or which actuators 2) have been operated on in accordance with the state of said switches 3, said switches 3 being associated to said control unit 4.
  • each switch 3 associated to an actuator 2 is connected to the connection I, to a terminal T1 of said connection I, and a second end of each switch 3 is connected to the control unit 4.
  • the control unit 4 which preferably corresponds with a microprocessor, a microcontroller or an equivalent device, is supplied by a continuous voltage (generally in the region of 5V, although it may also be in the region of 3.3V, for example), preferably generated by the supply unit 5, and does not support alternating voltages.
  • said appliance 100 when the appliance 100 is adapted to be connected to an external power supply that corresponds with an alternating power supply, said appliance 100 comprises an adaptor 6 for each switch 3, which adapts the alternating voltage to a continuous voltage acceptable to the control unit 4, the second end of each switch 3 being connected to said control unit 4 by means of a respective adaptor 6.
  • the adaptor 6 preferably corresponds with a conventional optocoupler that comprises a diode on the side of the switch 3 and a transistor on the side of the control unit 4, the collector of which is connected to said control unit 4 and the emitter of which is connected to ground M.
  • the supply unit 5 is connected to a terminal T1 of the connection l through the switches 3, which are disposed in parallel to each other.
  • each switch 3 is connected to the terminal T1 at a first end and to the supply unit 5 and to the control unit 4 at a second end.
  • the supply unit 5 is not reached by the supply originating from the connection I unless one of the actuators 2 is acted on, which causes the corresponding switch 3 to close, the appliance 100 not being powered until this time.
  • Said appliance 100 thus consumes no energy while it is not being acted on (on an actuator 2), thereby preventing said appliance 100 from consuming on standby.
  • the appliance 100 is switched off from the external power supply, so that it does not consume energy from said external power supply.
  • the corresponding switch 3 closes so that the terminal T1 also remains connected to that supply unit 5, which is being supplied, said supply unit 5 supplying the rest of the appliance 100.
  • the supply unit 5 corresponds with an internal power supply of the appliance 100, that is not shown as it is widely used and is not the object of the invention, a known conventional power supply being capable of being used.
  • the supply unit 5 is connected directly to the other terminal T2 of the connection l.
  • the appliance 100 also comprises a blocking member 8 through which the terminal T1 of the connection l connected to the switch 3 is connected to the supply unit 5, a terminal T1 thereby being connected to said supply unit 5 through the blocking member 8 and the other terminal T2 of the connection l directly.
  • the blocking member 8 is connected to the second ends of the switches 3, and attaches said second ends to each other with the result that the voltage in the second end of each switch 3 depends on the state of the switch 3, in other words, the blocking member 8 is capable of carrying the same voltage to the supply unit 5 at the same time as it maintains the independence of each of the second ends of the different switches 3.
  • control unit 4 can determine which actuator 2 is active and which one is not as it receives one signal or another corresponding to each switch 3 depending on whether said switch 3 has been operated or not. If no blocking member 8 is used, when at least one actuator 2 is activated the second ends of all the switches 3 are connected and the control unit 4 is not capable of identifying which actuator 2 is active and which is not.
  • the blocking member 8 comprises a rectifier 7 associated to each switch 3, said rectifier 7 being connected at a first end to the second end of the corresponding switch 3 and the second end of the different rectifiers 7 being connected to each other, said second ends of said rectifiers 7 also being connected to the supply unit 5.
  • each rectifier 7 corresponds with a diode, the anodes of said diodes being connected to the second end of the corresponding switch 3 and the cathodes of said diodes being connected to each other and to the supply unit 5.
  • the supply unit 5 (the power supply) does not require a rectifier stage as this would be provided by the blocking member 8.
  • the collector is thus connected to ground M and the control unit 4 interprets a 0 logic, determining that the corresponding actuator 2 is activated. If an actuator 2 is not activated, the collector is not connected to ground M and the control unit 4 interprets a 1 logic, determining that said actuator 2 is not active (the collector can comprise a pull-up for example, internal or external to the control unit 4, thereby enabling said control unit to interpret a 1 logic when the actuator 2 is deactivated).
  • the appliance 100 differs from the first embodiment in that the supply unit 5 is not connected directly to any of the terminals T1 and T2 of the connection l.
  • said appliance 100 comprises a complete blocking member 8' through which both terminals T1 and T2 are connected to the supply unit 5.
  • the complete blocking member 8' is connected at one side to the second ends of the switches 3 and to the terminal T2 that is not associated to said switches 3 (the inputs of said complete blocking member 8'), and to the supply unit 5 at the other side (the output of said complete blocking member 8'), said complete locking member 8' associating said second ends to each other so that the voltage in each second end depends on the state of the corresponding switch 3. If no complete blocking member 8' is used, when at least one actuator 2 is activated the second ends of all the switches 3 are connected and the control unit 4 is not capable of identifying which actuator 2 is active and which is not.
  • the complete blocking member 8' comprises a full-wave rectifier 7', said rectifier 7' being composed of a diode branch 70' for each switch 3 and an additional diode branch 71' for the terminal T2 that is not connected or associated to said switches 3, each diode branch 70' and 71' comprising two diodes connected in series, the switch 3 and the terminal T2 being connected between the two diodes of the corresponding diode branch 70' and 71'.
  • the supply unit 5 (the power supply) does not require a rectifier stage as that is provided by the locking member 8'.
  • the appliance 100 can also comprise a feedback unit 10; 10' adapted to carry the terminal T1 connected to the switches 3 to the supply unit 5, when the last actuator 2 is no longer acted on, the control unit 4 thereby being capable of being powered to perform the function of indicating that a heat source 1 remains hot, for example, by means of an indicator 9 associated to each heat source 1.
  • a feedback unit 10; 10' such as the one proposed in the appliance 100, all the heat sources 1 would switch off when all the actuators 2 are deactivated, and the appliance 100, and therefore the control unit 4, would no longer be powered and would thereby, by way of example, be incapable of performing the aforementioned function.
  • the function of said feedback unit 10; 10' is to enable said control unit 4 to continue being supplied for at least a specific time period sufficient to allow any heat source 1 to cool to a temperature that is not dangerous to users, or for the specific time period sufficient to carry out any other requisite temporary function, said terminal T1 remaining connected to the supply unit 5 for said preset time period.
  • the control unit 4 causes said feedback unit 10; 10' to stop connecting the terminal T1 to the supply unit 5, the appliance 100 no longer being supplied as a result.
  • the feedback unit 10 preferably corresponds with an opto-thyristor, as shown in Figure 5 , comprising a diode on the side of the control unit 4 and a thyristor on the other side.
  • the anode of the diode is connected to the control unit 4 and the cathode to ground M, and said control unit 4 strikes said diode when the first actuator 2 is activated, keeping it struck the whole time (by "struck” it should be understood that a current is caused to pass through it).
  • the anode of the thyristor is connected directly to the terminal T1 to which the switches 3 are also connected, while the cathode of said thyristor is connected to the supply unit 5.
  • the supply unit 5 when the diode is primed the supply unit 5 is connected to the terminal T1 also through the feedback unit 10, and if all the actuators 2 are deactivated the supply unit 5 continues to be connected to both terminals T1 and T2, the control unit 4 thereby continuing to be supplied and continuing to be capable of priming said diode of the feedback unit 10 for the preset time.
  • the feedback unit 10' preferably corresponds with an opto-triac, as shown in Figure 8 , comprising a diode on the side of the control unit 4 and a triac on the other side.
  • the anode of the diode is connected to the control unit 4 and the cathode to ground M, and said control unit 4 strikes said diode when the first actuator 2 is activated, keeping it struck the whole time (by "struck” it should be understood that a current is caused to pass through it).
  • One side of the triac is connected directly to the terminal T1 of the connection l to which the switches 3 are also connected, while the other side of said triac is connected to a diode branch 11 that is connected to the supply unit 5, in parallel with the diode branches 70' and 71' of the complete blocking member 8'.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Relay Circuits (AREA)

Claims (9)

  1. Appareil de cuisson qui comprend:
    - une pluralité de sources de chaleur (1),
    - un actionneur (2) associé à chaque source de chaleur (1), qui est déclenché par un utilisateur afin d'agir sur la source de chaleur correspondante (1),
    - des boutons (3), un bouton (3) étant associé à chaque actionneur (2), dont l'état change lorsque l'utilisateur agit sur l'actionneur correspondant (2),
    - une liaison (l) avec une alimentation externe, ladite alimentation étant une alimentation à tension alternative, grâce à laquelle ledit appareil (100) est alimenté, et qui comprend deux bornes (T1, T2), et
    - une unité de commande (4) adaptée, lorsqu'au moins l'un desdits actionneurs (2) a été déclenché, pour détecter un changement d'état des boutons (3) et pour identifier l'actionneur (2) qui a été déclenché en fonction desdits boutons (3), une première extrémité de chaque bouton (3) étant reliée à la liaison (l) et une seconde extrémité de chaque bouton (3) étant reliée à ladite unité de commande (4),
    la seconde extrémité de chaque bouton (3) étant reliée à l'unité de commande (4) à l'aide d'un adaptateur respectif (6), de sorte que chaque adaptateur (6), lorsque l'actionneur correspondant (2) a été déclenché, adapte la tension alternative présente dans la seconde extrémité du bouton correspondant (3) à une tension acceptable pour ladite unité de commande (4),
    chaque bouton (3) étant relié en série à la liaison (l), de sorte que l'appareil (100) ne consomme pas d'énergie de l'alimentation externe, à moins qu'au moins un actionneur (2) soit déclenché, caractérisé en ce que
    il comprend une unité d'alimentation (5) adaptée pour adapter la tension présente dans la liaison (l) à l'ensemble des tensions nécessaires dans l'appareil (100), l'appareil de cuisson (100) comprenant également soit
    - un élément de blocage (8) pour chaque bouton (3), la première extrémité de chaque bouton (3) étant reliée à l'une des bornes (T1) de la liaison (l) et la seconde extrémité de chaque bouton (3) étant reliée à l'élément de blocage respectif (8), chaque élément de blocage (8) étant relié à l'unité d'alimentation (5), les éléments de blocage (8) acheminant la même tension vers l'unité d'alimentation (5) tout en maintenant l'indépendance de chacune des secondes extrémités des différents boutons (3), l'autre borne (T2) de la liaison (l) étant reliée directement à l'unité d'alimentation (5) ; ou
    - un élément de blocage complet (8'), la première extrémité de chaque bouton (3) étant reliée à l'une des bornes (T1) de la liaison (l) et la seconde extrémité de chaque bouton (3) étant reliée à une entrée respective de l'élément de blocage complet (8'), l'autre borne (T2) de la liaison (l) qui n'est pas associée auxdits boutons (3) étant également reliée à une entrée respective dudit élément de blocage complet (8'), l'élément de blocage complet (8') comprenant deux sorties reliées à l'unité d'alimentation (5) grâce auxquelles les deux bornes (T1, T2) de la liaison (l) sont reliées à ladite unité d'alimentation (5).
  2. Appareil de cuisson selon la revendication 1, dans lequel l'adaptateur (6) est un optocoupleur.
  3. Appareil de cuisson selon la revendication 1 ou 2, dans lequel chaque élément de blocage (8) comprend un redresseur (7) associé au bouton correspondant (3), ledit redresseur (7) étant relié, au niveau d'une première extrémité, à la seconde extrémité du bouton (3), et les secondes extrémités des différents redresseurs (7) étant reliée les unes aux autres, lesdites secondes extrémités desdits redresseurs (7) étant reliées à l'unité d'alimentation (5).
  4. Appareil de cuisson selon la revendication 3, dans lequel chaque redresseur (7) correspond à une diode, les anodes desdites diodes étant reliées à la seconde extrémité du bouton correspondant (3) et les cathodes desdites diodes étant reliées les unes aux autres et à l'unité d'alimentation (5).
  5. Appareil de cuisson selon l'une quelconque des revendications précédentes, qui correspond à une unité de rétroaction (10) adaptée pour relier la borne (T1) de la liaison (l) reliée aux boutons (3) à l'unité d'alimentation (5), lorsque le dernier actionneur (2) n'est plus activé.
  6. Appareil de cuisson selon la revendication 5, dans lequel l'unité de rétroaction (10) comprend un opto-thyristor, une diode dudit opto-thyristor étant alimentée par l'unité d'alimentation (5) et le thyristor dudit opto-thyristor étant relié à la borne (T1) reliée aux boutons (3) par l'anode et relié à l'unité d'alimentation (5) par la cathode.
  7. Appareil de cuisson selon la revendication 1 ou 2, dans lequel l'élément de blocage complet (8') comprend un redresseur pleine onde (7'), ledit redresseur (7') étant composé d'une branche de diode (70') pour chaque bouton (3) et d'une branche de diode supplémentaire (71') pour la borne (T2) de la liaison (l) qui n'est pas reliée ou associée auxdits boutons (3), chaque branche de diode (70', 71') comprenant deux diodes reliées en série et le bouton correspondant (3) et la borne (T2) étant reliés entre les deux diodes de la branche de diode correspondante (70', 71').
  8. Appareil de cuisson selon la revendication 7, qui comprend une unité de rétroaction (10') adaptée pour relier la borne (T1) de la liaison (l) reliée aux boutons (3) à l'unité d'alimentation (5), lorsque le dernier actionneur (2) n'est plus activé.
  9. Appareil de cuisson selon la revendication 8, dans lequel l'unité de rétroaction (10') comprend un opto-triac, une diode dudit opto-triac étant alimentée par l'unité d'alimentation (5) et le triac dudit opto-triac relié à la borne (T1) étant relié aux boutons (3) à une extrémité, et relié à l'unité d'alimentation (5) à l'autre extrémité.
EP10382324.1A 2010-12-01 2010-12-01 Appareil de cuisson Active EP2461105B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10382324.1A EP2461105B1 (fr) 2010-12-01 2010-12-01 Appareil de cuisson

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Application Number Priority Date Filing Date Title
EP10382324.1A EP2461105B1 (fr) 2010-12-01 2010-12-01 Appareil de cuisson

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EP2461105A1 EP2461105A1 (fr) 2012-06-06
EP2461105B1 true EP2461105B1 (fr) 2016-06-29

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831689U (ja) * 1981-08-27 1983-03-01 株式会社日立ホームテック 電熱暖房器の制御装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652890A (en) * 1979-10-01 1981-05-12 Sony Corp Electromagnetic induction heating cooking device
US4634843A (en) * 1986-01-16 1987-01-06 General Electric Company Dual mode power control arrangement for cooking appliance
JPH0793180B2 (ja) * 1989-12-12 1995-10-09 リンナイ株式会社 ヒータ制御回路
ES2325197B1 (es) 2007-09-28 2010-06-04 Coprecitec, S.L. "aparato de cocina a gas con regulacion de potencia de llama".

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831689U (ja) * 1981-08-27 1983-03-01 株式会社日立ホームテック 電熱暖房器の制御装置

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