EP1505344B1 - Dispositif électrique pour l'arrêt d'une flamme de plaque chauffante faisant partie d'un ensemble de plusieurs plaques chauffantes à gaz - Google Patents

Dispositif électrique pour l'arrêt d'une flamme de plaque chauffante faisant partie d'un ensemble de plusieurs plaques chauffantes à gaz Download PDF

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Publication number
EP1505344B1
EP1505344B1 EP04012387.9A EP04012387A EP1505344B1 EP 1505344 B1 EP1505344 B1 EP 1505344B1 EP 04012387 A EP04012387 A EP 04012387A EP 1505344 B1 EP1505344 B1 EP 1505344B1
Authority
EP
European Patent Office
Prior art keywords
switching
gas
coil
thermocouple
solenoid valve
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
EP04012387.9A
Other languages
German (de)
English (en)
Other versions
EP1505344A2 (fr
EP1505344A3 (fr
Inventor
Klaus Anders
Bernhard Weinmann
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.)
Siebe Appliance Controls GmbH
Original Assignee
Siebe Appliance Controls 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.)
Filing date
Publication date
Application filed by Siebe Appliance Controls GmbH filed Critical Siebe Appliance Controls GmbH
Priority to SI200432175T priority Critical patent/SI1505344T1/sl
Priority to PL04012387T priority patent/PL1505344T3/pl
Publication of EP1505344A2 publication Critical patent/EP1505344A2/fr
Publication of EP1505344A3 publication Critical patent/EP1505344A3/fr
Application granted granted Critical
Publication of EP1505344B1 publication Critical patent/EP1505344B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • F23Q9/14—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame using electric means, e.g. by light-sensitive elements
    • 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
    • F23N2223/26—Timing network with capacitors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/30—Representation of working time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/22—Fuel valves cooperating with magnets
    • 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

Definitions

  • the invention relates to a device for electrically controlled switching off of the gas flame of one of a plurality of combustion chambers, each of which is supplied via a magnetic valve combustible gas, with a plurality of solenoid valves, each comprising a magnetic coil, wherein the magnetic coil of the solenoid valve is fed by a magnetic coil associated thermocouple, that forms a thermal circuit with the magnetic coil, wherein the magnetic valve is held in the heated by the gas flame thermocouple in the open position.
  • thermocouples With thermal electrical safety function are known. To turn on the gas flame, the valve is opened manually by pressing, whereby u.a. a magnetic circuit is closed.
  • a thermocouple powers the solenoid coil. This thermocouple is heated by the monitored gas flame. After the flame has heated the thermocouple for a few seconds, the thermo-current of the thermocouple is high enough to keep the magnetic circuit closed and to hold the gas valve in the open position. If the flame extinguishes due to overcooking food, wind or the like, the thermo-current of the thermocouple decreases and the valve drops or closes automatically and remains in the closed position.
  • thermo-current of the thermocouple is interrupted by opening the relay contact and the gas valve closes.
  • additional contact resistances and residual stresses which are brought into the thermal circuit through the wiring and the timer.
  • These "voltage losses" must be compensated by a higher thermal voltage, which is achieved only after a longer heat-up time.
  • the valve has to be held manually in the open position for a longer time, which makes the system less attractive for everyday use.
  • the reliability of the system suffers from contamination of the relay contacts. Dirt also prevents the valve from opening permanently.
  • thermocouple upon ignition of a gas flame provides an electrical current which is applied to a solenoid of a solenoid valve, so that the solenoid valve maintains the gas supply to the burner until a predetermined period of time is connected to a DC power source capacitor is connected to the solenoid and neutralized by an opposite direction of energization of the magnetic coil, the magnetic field, so that the gas supply to the burner is terminated.
  • the EP 1113227 A2 discloses a device for obtaining a quick ignition of a gas burner of a hob, which is fed via a solenoid valves with gas line, wherein the gas burner, a detonator and a knob for controlling the activation are connected, wherein the solenoid valves with drive means, which in the by Burner generated flame are immersed, connected to hold the solenoid valves in a working position and the gas supply to ensure the gas burner, wherein the solenoid valves are connected to electrical generator means, which are activated for a predetermined period of time following the actuation of the button for activating the connected burner, and which are connected to timer means, wherein the generator means for each solenoid valve, an electric Have transformer.
  • An object of the present invention is to provide a device for electrically controlled shutdown of the gas flame of a burner, which manages without a relay or without mechanically moving parts.
  • the advantages of the solution according to the invention are, in particular, that the sensitive thermostatic circuit is not interrupted for switching off and that no mechanically moving parts prone to soiling are required.
  • a technically and electrically uncritical parallel connection is created to the thermal circuit in the vicinity of the solenoid valve.
  • a compensation capacitor supplying the storage capacitor is provided. Since the compensation current only has to flow for a fraction of a second in order to drop the magnetic circuit, a capacitor forms a cost-effective and much simpler solution, for example with respect to a power supply.
  • the storage capacitor is connected via a plurality of switching devices with a corresponding number of Thermostrom Vietnamese manicure.
  • the storage capacitor is connected to a charging device, in particular a charging resistor, which ensures that the storage capacitor is constantly charged.
  • the switching device is designed as an electrically controlled switch, in particular semiconductor switch.
  • the switching device is controlled by a timer to program shutdown times can.
  • This timer has a plurality of independent time programs for switching a plurality of switching devices for a plurality of burners.
  • the timer can also have a safety device for switching off all gas flames after a predefinable maximum time of for example 3 hours.
  • the time is chosen so that it is longer than a typical burning time, for example, a gas stove is. After the safety time has elapsed, all gas flames are switched off for safety reasons.
  • the timer has a number of burners corresponding number of Zeitvor Mosasten and a common time reset button. As a result, the number of controls is limited to the essentials.
  • thermo-circuit 10 consists of a thermocouple 11, which is connected to the solenoid coil 12 of a solenoid valve 13.
  • a combustible gas leading gas line 14 leads to a burner 15, for example, the focal point of a stove or a baking oven.
  • the solenoid valve 13 is connected in the gas line 14, wherein a valve member 16 is provided for shutting off and opening the gas line 14.
  • the gas line 14 terminating in the idle state valve member 16 is pressed by means of a manual actuator 17 in the open position, so that gas can flow to the burner 15.
  • This is ignited by means of a lighter, so that a gas flame 18 is formed.
  • This gas flame 18 heats the thermoelement 11 mounted in a correspondingly close spatial arrangement so that it generates a thermoelectric current which flows through the magnetic coil 12 of the solenoid valve 13.
  • the solenoid valve 13 and the valve member 16 is held in the open position, so that the manual actuator 17 can now be released.
  • thermocouple 11 cools down, and the decreasing thermo-current can not hold the valve member 16 in its open position, so that this falls back into the closed position and blocks the further gas supply.
  • This drop can be effected by means of a spring, not shown, and / or by gravity.
  • a timer 19 includes a capacitor 20 which is kept constantly in the charged state by means of a charging resistor 21.
  • This capacitor 20 is connected via a switch 22, for example, a semiconductor switch, parallel to the thermocouple 11 and to the solenoid coil 12.
  • the switch 22 can be closed by a time circuit, not shown, with turn-off Ta are programmable. If a switch-off time Ta is reached, the switch 22 closes, as a result of which a compensating current is briefly removed from the capacitor, which is fed into the thermal circuit 10 in such a way that it counteracts the thermal current. As a result, the solenoid valve 13 drops and the valve member 16 closes the gas line 14. After subsequently re-opened switch 22, the thermo-current of the thermocouple 11 is no longer able to open the solenoid valve 13.
  • the capacitor 20 is connected via a further, also time-controlled switch 23 with a further thermal circuit 24, but in FIG. 1 is not shown in detail, but only in FIG. 2 , Again, this in turn consists of a thermocouple 25 and the solenoid 26 of a magnetic valve, not shown in the other gas line in the gas line for another, also not shown focal point.
  • thermo circuits for further firing points can be connected to the condenser 20, the solenoid valves nevertheless being able to be switched off one after the other in the second range.
  • the timer 19 is shown in the outside view. It has next to a display 27 for the playback of the clock and the shutdown times to be set five Zeitvor Congressasten 28 to 32 for setting the desired shutdown for five burners or five Thermostrom Vietnamese and a common time reset button 33, which corrects the forward to be set by one of the Zeitpragsasten 28 to 32 serves.
  • a common time reset button 33 which corrects the forward to be set by one of the Zeitpragsasten 28 to 32 serves.
  • a safety shutdown is provided by the after burning periods, the usual typical burning times of e.g. go out for three hours, all gas flames are shut off for safety's sake. This can be done by means of an additional timer through which all switches 22, 23 are closed after the safety time. Since the time control is usually carried out in a microcontroller 34, the program only needs this shutdown time, after expiration of which corresponding control outputs all switches 22, 23 are closed.

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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)

Claims (5)

  1. Dispositif servant à l'arrêt par commande électrique de la flamme d'un point de combustion parmi plusieurs points de combustion (15), auxquels du gaz inflammable peut être amené respectivement par l'intermédiaire d'une électrovanne (13), comprenant plusieurs électrovannes (13), qui comprennent respectivement une bobine magnétique (12, 26), sachant que la bobine magnétique (12, 26) de l'électrovanne (13) est alimentée par un thermocouple (11, 25) associé à la bobine magnétique (12, 26), lequel thermocouple forme avec la bobine magnétique (12, 26) un circuit thermoélectrique (10, 24), sachant que l'électrovanne (13) est maintenue dans la position ouverte lorsque le thermocouple (11, 25) est chauffé par la flamme, comprenant également un système de commutation (22, 23) associé au circuit thermoélectrique (10, 24), lequel est prévu pour injecter un courant de compensation entraînant une coupure de l'électrovanne (13) dans la position fermée, dans le circuit thermoélectrique (10, 24) de la bobine magnétique (12, 26) reliée au thermocouple (11, 25), et comprenant un condensateur accumulateur (20) délivrant le courant de compensation, lequel est relié par l'intermédiaire de plusieurs systèmes de commutation (22, 23) à un nombre correspondant de circuits thermoélectriques (10, 24) et qui est relié au système de charge (21), sachant que le système de commutation (22, 23) est réalisé sous la forme d'un commutateur à commande électrique et est commandé par une unité de commande de temps (34), comprenant également une unité de commande de temps (34), qui présente plusieurs programmes de temps indépendants les uns des autres, servant à commuter plusieurs systèmes de commutation (22, 23) pour plusieurs points de combustion (15).
  2. Dispositif selon la revendication 1, caractérisé en ce que le système de charge (21) est réalisé sous la forme d'une résistance de charge.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le commutateur à commande électrique est réalisé sous la forme d'un commutateur à semi-conducteur.
  4. Dispositif selon la revendication 1, 2 ou 3, caractérisé en ce que l'unité de commande de temps (34) comporte un système de sécurité servant à couper toutes les flammes (18) conformément à une durée maximale prédéfinie.
  5. Dispositif selon la revendication 1, 2, 3 ou 4, caractérisé en ce que la minuterie (19) contenant l'unité de commande de temps (34) inclut un nombre de touches de préréglage de durée (28 à 32) correspondant au nombre de points de combustion et une touche de réinitialisation de la durée (33) commune.
EP04012387.9A 2003-08-02 2004-05-26 Dispositif électrique pour l'arrêt d'une flamme de plaque chauffante faisant partie d'un ensemble de plusieurs plaques chauffantes à gaz Expired - Lifetime EP1505344B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200432175T SI1505344T1 (sl) 2003-08-02 2004-05-26 Naprava za električno krmiljeno izklapljanje plinskega plamena enega od več gorilnih mest
PL04012387T PL1505344T3 (pl) 2003-08-02 2004-05-26 Urządzenie do sterowanego elektrycznie wyłączania płomienia gazowego jednego z kilku stanowisk palnych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335465A DE10335465A1 (de) 2003-08-02 2003-08-02 Vorrichtung zum elektrisch gesteuerten Abschalten der Gasflamme einer Brennstelle
DE10335465 2003-08-02

Publications (3)

Publication Number Publication Date
EP1505344A2 EP1505344A2 (fr) 2005-02-09
EP1505344A3 EP1505344A3 (fr) 2010-06-02
EP1505344B1 true EP1505344B1 (fr) 2014-04-30

Family

ID=33547053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04012387.9A Expired - Lifetime EP1505344B1 (fr) 2003-08-02 2004-05-26 Dispositif électrique pour l'arrêt d'une flamme de plaque chauffante faisant partie d'un ensemble de plusieurs plaques chauffantes à gaz

Country Status (5)

Country Link
EP (1) EP1505344B1 (fr)
DE (1) DE10335465A1 (fr)
ES (1) ES2485843T3 (fr)
PL (1) PL1505344T3 (fr)
SI (1) SI1505344T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004917C2 (en) * 2010-06-18 2011-12-20 Intell Properties B V Device and method for electrically controlled turning off of a gas flame of a gas hob.
IT201700017422A1 (it) * 2017-02-16 2018-08-16 Vanni Gallocchio Dispositivo di sicurezza per bruciatori a gas di fornelli, cucine e piani cottura in genere

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1098811A (en) * 1963-07-19 1968-01-10 Seemark Switches Ltd Improvements in timers or safety cut-outs for fuel-burning appliances
DE1233793B (de) * 1964-05-27 1967-02-09 Krefft Aktien Ges W Einrichtung zum Sichern von Gasbrennern von Gasgeraeten
JPS62293016A (ja) 1986-06-11 1987-12-19 Matsushita Electric Ind Co Ltd 時限装置付ガス器具
JPH0292450A (ja) * 1988-09-30 1990-04-03 Nok Corp 成形品から型を除去する方法および誘導加熱式型除去装置
IT1283738B1 (it) * 1996-04-15 1998-04-30 Whirpool Europ S R L Apparecchio funzionante a gas per il riscaldamento e/o cottura di alimenti e simili
JP3693196B2 (ja) * 1996-05-24 2005-09-07 パロマ工業株式会社 ガス調理器
IT1313950B1 (it) 1999-12-16 2002-09-26 Whirlpool Co Dispositivo per ottenere la rapida accensione di un bruciatore a gasdi un piano di cottura alimentato attraverso un condotto del gas
KR200191106Y1 (ko) * 2000-02-29 2000-08-16 최영규 전자식 타이머에 의한 개방시간이 조절가능한 밸브 조립체
US20020073985A1 (en) * 2000-12-18 2002-06-20 Bsh Home Appliances Corporation Pulsed sequence burner control with valve

Also Published As

Publication number Publication date
PL1505344T3 (pl) 2014-09-30
SI1505344T1 (sl) 2014-08-29
ES2485843T3 (es) 2014-08-14
EP1505344A2 (fr) 2005-02-09
DE10335465A1 (de) 2005-03-03
EP1505344A3 (fr) 2010-06-02

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