EP0686811B1 - Système de programmation pour appareil de cuisson domestique à gaz - Google Patents

Système de programmation pour appareil de cuisson domestique à gaz Download PDF

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Publication number
EP0686811B1
EP0686811B1 EP95107188A EP95107188A EP0686811B1 EP 0686811 B1 EP0686811 B1 EP 0686811B1 EP 95107188 A EP95107188 A EP 95107188A EP 95107188 A EP95107188 A EP 95107188A EP 0686811 B1 EP0686811 B1 EP 0686811B1
Authority
EP
European Patent Office
Prior art keywords
programming
programming system
burner
safety means
safety
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.)
Expired - Lifetime
Application number
EP95107188A
Other languages
German (de)
English (en)
Other versions
EP0686811A3 (fr
EP0686811A2 (fr
Inventor
Antonio Quintini
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.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici SpA
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 Merloni Elettrodomestici SpA filed Critical Merloni Elettrodomestici SpA
Publication of EP0686811A2 publication Critical patent/EP0686811A2/fr
Publication of EP0686811A3 publication Critical patent/EP0686811A3/en
Application granted granted Critical
Publication of EP0686811B1 publication Critical patent/EP0686811B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/22—Timing network
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/02—Controlling two or more burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/08—Household apparatus

Definitions

  • the present invention refers to a programming system for switching off a domestic gas cooking appliance according to the preamble of the appended claim 1.
  • a programming system is shown in FR-A-1585 417.
  • domestic cooking appliances are equipped by law with a safety system for the oven and for the grill, which consists in the interruption of the gas supply in cases of flame loss.
  • safety systems are also provided which provide a coaxial tap with a mechanical timer which is loaded and, after an established amount of time automatically returns to the position of gas flow closure.
  • the aim of the present invention is that of indicating a programming system for switching off a domestic gas cooking appliance, that overcomes the drawbacks of the known systems with means being both simple and readily available on the market.
  • the present invention has as its subject a programming system according to the preamble of the appended claim 1 and having the features as set forth in the characterising portion of said claim 1.
  • reference number 1 indicates a two-way thermostat with safety means (for each way) for controlling the temperature, both of the oven function and of the grill function.
  • the two-way thermostat 1 is connected to the gas tap; such tap, is made so as that, when the passage of the gas towards the oven is opened, automatically the passage of the gas towards the grill remains closed, and the same thing also takes place in the opposite sense when it is desired to use the grill.
  • Reference number 2 indicates a thermocouple that detects the presence of a flame of the oven burner
  • number 3 indicates a thermocouple that detects the presence of a flame of the grill
  • an electric timer is indicated with single-pole interruption. Therefore to the single pole, both the ways relative to the thermocouple 2 and the thermocouple 3 can be connected without interference, being as that when the thermocouple 2 is active, the thermocouple 3 is disabled. This is possible, as previously mentioned, because the gas tap is made in a manner to be capable of supplying only one or the other of the two burners.
  • the safety function inserted in the thermostat is obtained by a magnet supplied by a current produced by the flame detection thermocouple, when it is heated by the flame of the burner. Upon turning off the flame, the supply current to the magnet ends, which becoming deenergized, closes the gas flow.
  • the thermocouples 2 and 3 are connected to the thermostat through the electric timer 4.
  • the timer 4 operates as an electric switch that can interrupt or electrically connect the thermocouples 2 and 3 to the respective safety means of the thermostat 1.
  • the timer is provided with various operational positions and more precisely:
  • figure 2 that represents a schematic diagram of an embodiment of the programming system for switching off a burner of a cooking hob or a burner of an oven
  • number 5 indicates a one-way thermostat with safety means for the burner of the oven
  • number 6 a tap with safety means is indicated for a burner of the cooking hob
  • numbers 7 and 8 flame detection thermocouples are indicated respectively of the oven and of the burner of the cooking hob
  • an electric timer is indicated with a two-pole interruption, i.e. the thermocouples 7 and 8 are connected to two different poles.
  • the timer 9 is provided with three operational positions being identical to those described for the timer 4, i.e.:
  • Number 10 indicates a switch which is used for establishing the operation of the function which is desired to be used and the way in which it is to be used. With 10a the arrangement is indicated of the switch 10 for the manual operation of both burners, thus the timer 9 is excluded; 10b indicates the arrangement for the programmed operation of the burner of the cooking hob and manual of the oven; 10c indicates the arrangement for the programmed functioning of the oven and manual of the cooking hob.
  • the operation is identical to that previously described for the programming of the oven or of the grill, i.e. the interruption is programmed of the current to the magnet of the safety means of the thermostat or tap, and as a consequence the closure of the gas flow, by way of the electric timer 9.
  • the programming system for switching off a gas cooking appliance has the following advantages:

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Claims (14)

  1. Système de programmation destiné à arrêter le fonctionnement d'un brûleur d'un appareil domestique de cuisson à gaz, donnant plusieurs fonctions de cuisson telles que four, gril, plaque de cuisson, comprenant tous les éléments connus pour son fonctionnement et notamment :
    au moins deux brûleurs,
    un premier dispositif de sécurité (2, 3 ; 7, 8) destiné à détecter la présence d'une flamme à un brûleur respectif,
    un second dispositif de sécurité (1 ; 5, 6) qui, en l'absence d'une flamme détectée par le premier dispositif de sécurité (2, 3 ; 7, 8), peut fermer un conduit qui transmet du gaz au brûleur,
    un dispositif (4 ; 9) de programmation du moment d'arrêt de l'alimentation d'un brûleur par interruption d'un courant électrique qui alimente le second dispositif de sécurité (1 ; 5, 6), et
    un dispositif (4 ; 9, 10) de sélection et/ou de programmation d'une fonction voulue de cuisson parmi plusieurs fonctions possibles,
       caractérisé en ce que :
    le premier dispositif de sécurité (2, 3 ; 7, 8) comporte un thermocouple (2, 3 ; 7, 8) associé à l'un au moins des brûleurs afin que, en réponse à la présence d'une flamme, il crée le courant électrique,
    le second dispositif de sécurité comporte un dispositif d'interception (1 ; 5, 6) commandé électriquement et recevant le courant électrique créé par le premier dispositif de sécurité (2, 3 ; 7, 8),
    le dispositif de programmation (4 ; 9) assure l'interruption de la circulation du courant électrique entre le thermocouple (2, 3 ; 7, 8) et le dispositif d'interception (1 ; 5, 6) à commande électrique qui lui est connecté lorsqu'un temps programmé par le dispositif de programmation (4 ; 9) s'est écoulé.
  2. Système de programmation selon la revendication 1, caractérisé en ce que le dispositif de sélection (4 ; 9, 10) est destiné à sélectionner un brûleur destiné à subir la programmation dans le temps.
  3. Système de programmation selon la revendication 1 ou 2, caractérisé en ce que le dispositif de sélection (4 ; 9, 10) a différentes positions de travail parmi lesquelles une position dans laquelle tous les brûleurs peuvent fonctionner en mode manuel, c'est-à-dire dans laquelle les brûleurs ne sont pas programmés temporellement.
  4. Système de programmation selon l'une au moins des revendications 1 à 3, caractérisé en ce que le dispositif de sélection (4 ; 9, 10) a différentes positions de travail parmi lesquelles une position dans laquelle tous les premiers dispositifs de sécurité (2, 3 ; 7, 8) associés à chaque brûleur sont maintenus déconnectés électriquement du second dispositif correspondant de sécurité (1 ; 5, 6), en particulier afin que la mise en oeuvre des fonctions de cuisson soit exclue et qu'une sécurité supplémentaire soit réalisée.
  5. Système de programmation selon la revendication 3, caractérisé en ce que le dispositif de sélection est réalisé par le dispositif de programmation (4).
  6. Système de programmation selon la revendication 3, caractérisé en ce que le dispositif de sélection comporte le dispositif de programmation (9) et un interrupteur électrique (10).
  7. Système de programmation selon la revendication 1, caractérisé en ce que le dispositif de programmation (4 ; 9) comporte une minuterie électrique assurant une interruption unipolaire (4).
  8. Système de programmation selon la revendication 1, caractérisé en ce que le dispositif de programmation (4 ; 9) comporte une minuterie électrique à interruption bipolaire (9).
  9. Système de programmation selon une ou plusieurs des revendications précédentes, caractérisé en ce que le second dispositif de sécurité comprend au moins un aimant incorporé à un thermostat (1 ; 5).
  10. Système de programmation selon la revendication 9, caractérisé en ce que le thermostat (1 ; 5) est un thermostat bidirectionnel (1).
  11. Système de programmation selon une ou plusieurs des revendications précédentes, caractérisé en ce que le second dispositif de sécurité comprend au moins un aimant incorporé à un robinet à gaz (6).
  12. Système de programmation selon la revendication 1, caractérisé en ce que les deux brûleurs sont incorporés à un four.
  13. Système de programmation selon la revendication 12, caractérisé en ce qu'un seul robinet est utilisé pour transmettre en alternance du gaz au brûleur.
  14. Système de programmation selon la revendication 1, caractérisé en ce que l'un des brûleurs est incorporé à un four et un autre est incorporé à une plaque de cuisson.
EP95107188A 1994-05-12 1995-05-11 Système de programmation pour appareil de cuisson domestique à gaz Expired - Lifetime EP0686811B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO940384A IT1273197B (it) 1994-05-12 1994-05-12 Sistema di programmazione dello spegnimento di un apparecchio di cottura a gas per uso domestico
ITTO940384 1994-05-12

Publications (3)

Publication Number Publication Date
EP0686811A2 EP0686811A2 (fr) 1995-12-13
EP0686811A3 EP0686811A3 (fr) 1996-01-24
EP0686811B1 true EP0686811B1 (fr) 1999-09-29

Family

ID=11412524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107188A Expired - Lifetime EP0686811B1 (fr) 1994-05-12 1995-05-11 Système de programmation pour appareil de cuisson domestique à gaz

Country Status (4)

Country Link
EP (1) EP0686811B1 (fr)
DE (1) DE69512466T2 (fr)
ES (1) ES2138106T3 (fr)
IT (1) IT1273197B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725921A1 (de) * 1997-06-19 1998-12-24 Diehl Stiftung & Co Steuereinrichtung für Gasbrenner
ITTO20110776A1 (it) * 2011-08-25 2013-02-26 Indesit Co Spa Apparecchio di cottura a gas con sicurezza
WO2023175218A1 (fr) 2022-03-17 2023-09-21 Orkli, S.Coop. Appareil à gaz avec système de régulation de température

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578717A (en) * 1950-05-23 1951-12-18 Tappan Stove Co Burner control mechanism
US3584197A (en) * 1968-06-20 1971-06-08 Richard Davis Grayson Range control system
FR1585417A (fr) * 1968-07-09 1970-01-23
GB2196150A (en) * 1986-09-22 1988-04-20 Sum Pang Gas burner control

Also Published As

Publication number Publication date
DE69512466T2 (de) 2000-05-11
ITTO940384A0 (it) 1994-05-12
ES2138106T3 (es) 2000-01-01
EP0686811A3 (fr) 1996-01-24
IT1273197B (it) 1997-07-07
DE69512466D1 (de) 1999-11-04
ITTO940384A1 (it) 1995-11-12
EP0686811A2 (fr) 1995-12-13

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