EP2909535A1 - Procédé de fonctionnement d'un appareil de cuisson à gaz et appareil de cuisson à gaz - Google Patents

Procédé de fonctionnement d'un appareil de cuisson à gaz et appareil de cuisson à gaz

Info

Publication number
EP2909535A1
EP2909535A1 EP13770471.4A EP13770471A EP2909535A1 EP 2909535 A1 EP2909535 A1 EP 2909535A1 EP 13770471 A EP13770471 A EP 13770471A EP 2909535 A1 EP2909535 A1 EP 2909535A1
Authority
EP
European Patent Office
Prior art keywords
gas
burner
gas burner
power
cooking appliance
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.)
Granted
Application number
EP13770471.4A
Other languages
German (de)
English (en)
Other versions
EP2909535B1 (fr
Inventor
Achim Lauser
Axel Hiller
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP2909535A1 publication Critical patent/EP2909535A1/fr
Application granted granted Critical
Publication of EP2909535B1 publication Critical patent/EP2909535B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • 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
    • F23N2235/14—Fuel valves electromagnetically operated
    • 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
    • F23N2235/18—Groups of two or more valves
    • 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 invention relates to a method for operating a gas cooking appliance with a plurality of gas burners and a corresponding gas cooking appliance, with which this method can be performed.
  • gas valves control the gas flow to a gas burner and are designed as electrically controllable motor or servo valves. Their valve position can be regulated as a function of a preselected desired position on an operating device and an actual temperature measured at the hotplate.
  • the invention has for its object to provide an aforementioned method and an aforementioned gas cooking appliance, with which problems of the prior art can be solved and it is particularly possible to carry out the operation of a gas burner meaningful and comfortable.
  • a gas flow to the individual gas burners, which determines their gas flame and thus also power, via at least one associated gas valve.
  • One Such gas valve can be controlled by a controller of the gas cooking appliance according to, as will be explained below.
  • the connection of a second gas burner of the gas cooking appliance recognized.
  • This second gas burner is connected to the same gas supply line as the first gas burner, either with reference to a gas supply pipe or a gas supply pipe inside the gas cooking appliance or else to a gas pipe leading from outside into the gas cooking appliance.
  • the power at the first gas burner is permanently increased or the gas flow to the first gas burner is increased. This ensures that the system-related pressure drop within this gas supply or common gas supply by connecting the second gas burner does not cause the gas flame at the first gas burner is smaller or smaller or flickers unpleasantly.
  • the first gas burner is supplied with more gas than increased gas flow, thereby compensating for the reduced gas inflow due to the pressure drop in the system due to the switching on of the second gas burner.
  • the pressure at the first gas burner remains after the connection of the second gas burner namely due to the system lower because the increased gas flow leads to a systemic pressure drop in the gas supply and thus also at the first gas burner.
  • the first gas burner is already operated at its maximum power, this is not possible because the gas supply can not be increased further.
  • the gas flow or the gas inflow to the gas valves is limited by a bore diameter of 6 mm or 8 mm at the upstream safety / main valve and / or by a pipe or hose diameter, ie, gas can not flow through it as much as desired.
  • a burner nozzle advantageously has a diameter of about 1 mm, so that the connection of a single gas burner can lower the gas pressure and thus also the gas flow to the other gas burners.
  • An inlet pressure may be between 10 mbar and 50 mbar, depending on the type of gas and the land.
  • said short-term increase in power at the first gas burner or increase in the gas flow to the first gas burner can take place within a few seconds, preferably in less than 1 second to 3 seconds or even up to 5 seconds.
  • the short-term increase means that the power at the first gas burner or the gas flow to the first gas burner is increased immediately when the second gas burner is switched on or if des- sen gas valve is opened.
  • the timing should be done here so that the gas flame on the first gas burner does not interfere with the connection of the second gas burner or is smaller, but on the other hand should not be too high by increasing the gas flow to the first gas burner whose gas flame disturbing.
  • the power should be increased substantially abruptly at the first gas burner, since the power, in particular when it should be a higher power, is adjusted substantially abruptly also for the second gas burner when it is put into operation.
  • a design-related delay can not be avoided, but it should at least be kept small or there should be no further, possibly unnecessary delay in this embodiment. It is regarded as advantageous if the gas inflow to the first gas burner is increased by 5% to 30% or the gas valve is correspondingly opened further for this increase. This makes it possible to compensate for a pressure drop that usually arises when connecting a second gas burner.
  • the increased gas flow to the first gas burner depends on which power level of the first gas burner is set. Additionally or alternatively, the increased gas flow to the first gas burner should depend on a power level which is set at the second gas burner or with which the second gas burner is to be operated. The increase of the gas flow for the first gas burner should, as far as possible, be stronger, the higher the power set for the second gas burner. This is just to be achieved, as has been explained above, that the gas flow or the power for the first gas burner as possible not or only minimally fluctuates or breaks when the second gas burner is turned on or is supplied with gas. This is advantageously determined empirically for a plurality of gas burners, for example on a gas hob, also as a function of their arrangement on a gas inflow or an internal gas line, and stored in a control, advantageously as a look-up table.
  • the gas flow to the second gas burner is slowly increased.
  • the intended hene performance increase can not be performed to compensate for a gas pressure fluctuation.
  • a reduction or flickering of the gas flame at the first gas burner can also be avoided.
  • This slow increase of the gas flow to the second gas burner can extend over a period of greater than 2 sec to 5 sec, while the second gas burner is raised to the set power level or the resulting gas flow by slowly opening the corresponding gas valve.
  • the gas flow to the second gas burner is also increased only slowly.
  • the aforementioned 2 sec to 5 sec may be provided for the second gas burner again.
  • the second gas burner of the gas cooking appliance is not switched on starting from zero, but is increased in its performance, in particular significantly increased, for example to more than 50%. Also, it can be achieved that the operation of the first gas burner takes place as close as possible to the set operation after connecting or upshifting the second gas burner.
  • the gas burners are operated with gas valves, which are designed for more gas flow or power than the nominal power of the gas burner, for example, for 20% to 40% or even 50% more. Then, namely, a significant permanent increase in the gas flow to compensate for a lower gas pressure due to the addition of other gas burners is still possible.
  • the gas valve is just not fully open for a set maximum power.
  • the gas cooking appliance therefore has at least the two gas burners, particularly advantageously four or six gas burners.
  • the at least two gas burners are preferably arranged side by side on the gas cooking appliance, in particular if it is a gas hob. special They are preferably arranged directly next to each other, wherein a distance may be for example 5 cm to 30 cm or 40 cm.
  • each of the gas burners can form their own independent hotplate of a gas hob.
  • FIG. 1 shows a schematic representation of a gas hob with three gas burners in a state in which only the first gas burner is in operation
  • FIG. 1 shows a schematic representation of a gas hob 1 1, which has a hob plate 12.
  • three gas burners 14a to 14c are provided.
  • Each of the gas burners 14a to 14c has a gas valve 16a to 16c which is assigned to it, which regulates the gas flow, and is designed as a separate autarkic hotplate.
  • It is provided a supply line 18 which leads from the outside into the gas hob 1 1 and first goes to a safety valve 17. Thereafter, the supply line 18 'continues to three individual lines 19a to 19c, which then just lead to the gas valves 16a to 16c.
  • the pressure at the gas valves 16a to 16c changes depending on the gas flows through the other gas valves which are connected to the same supply line 18 '.
  • the gas hob 1 1 still three simplified illustrated controls 21 a to 21 c and a controller 22.
  • the controller 22 implements the commands which an operator can give with the operating elements 21, in particular with regard to a desired power at one of the gas burners 14a to 14c, in control signals for the gas valves 16a to 16c and possibly also the safety valve 17.
  • FIG. 1 it is shown how only the gas burner 14a is operated and thereby has a gas flame 15a.
  • the power at the gas burner 14a and the corresponding size of the gas flame 15a can be adjusted by an operator on the control element 21a together with the controller 22.
  • FIG. 2A now shows what the image of the gas flame 15a 'on the first gas burner 14a and a gas flame 15b on the second gas burner 14b represents when the second gas burner 14b has been switched on in the prior art by means of the control element 21b that the associated gas valve 16b opens and causes a gas flow.
  • FIG. 3 shows how, from the beginning, the first gas burner 14a is operated with a power dependent on a gas inflow G, this gas inflow G being approximately 80% of a maximum gas inflow.
  • a second gas burner 14b is now to be switched on with a power whose power level does not matter in principle, whereby here it is about 50% of a maximum gas inflow.
  • the controller 22 knows due to programmed empirical values, the details of the pressure drop when switching on the second gas burner with a specific power value so accurate that for a given gas flow to the first gas burner, the increase of the gas flow are optimally determined and the speed of increase, so Operator on the flame image as possible not notice of the pressure drop.
  • FIG. 4 shows a similar progression as in FIG. 3, except that here the first gas burner is operated with a gas inflow of 60% of the maximum gas inflow. Since the second gas burner is switched on with its maximum gas flow, here takes place a slightly greater increase of the gas flow to the first gas burner 14a, namely from 60% to 80% of the maximum gas flow, ie by one third. In the case of FIG. 3, the increase was a quarter, and it was there to additionally take into account that a greater increase would not have been possible. Further dependencies or variations are easily conceivable on the basis of these two examples. Furthermore, it also plays a role here, how big in relation to each other the gas flows of the individual gas burners are absolutely seen.
  • a first gas burner 14a is operated with maximum gas flow, a further increase is therefore not possible. Therefore, at the appropriate time, the controller 22 does not turn on the second gas burner 14b abruptly, as shown in Figs. 3 and 4, or open the corresponding gas valve 16b, but retards it. This deceleration can take place over a time T A , which may also be a few seconds, for example 2 sec to 5 sec. This slow increase does not produce a sudden pressure drop in the system, but a gradual one, so that at the gas flame 15a only a small difference is noticed at the first gas burner 14a, since at the same time its gas supply is reduced slowly or distributed over the stated period. At least the conspicuousness is reduced by the temporal distribution.

Landscapes

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

Abstract

L'invention concerne un procédé de fonctionnement d'un appareil de cuisson à gaz comprenant plusieurs brûleurs. Selon ce procédé, l'alimentation en gaz des différents brûleurs est réglée par une soupape de gaz. Si un premier brûleur fonctionne à une puissance inférieure à sa puissance maximale par réglage d'une alimentation en gaz inférieure à une alimentation en gaz maximale par l'intermédiaire de la soupape de gaz, on procède à la détection de la mise en marche d'un deuxième brûleur de l'appareil de cuisson au gaz, ce deuxième brûleur étant raccordé à la même conduite d'alimentation en gaz de ou destinée à l'appareil de cuisson à gaz. Aux fins de compensation, l'alimentation en gaz du premier brûleur est rapidement augmentée de manière durable afin d'empêcher toute réduction de la flamme due à la mise en marche du deuxième brûleur.
EP13770471.4A 2012-10-18 2013-09-26 Procédé de fonctionnement d'un appareil de cuisson gaz et cuisinière à gaz Active EP2909535B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012219039.2A DE102012219039A1 (de) 2012-10-18 2012-10-18 Verfahren zum Betrieb eines Gaskochgeräts und Gaskochgerät
PCT/EP2013/070091 WO2014060201A1 (fr) 2012-10-18 2013-09-26 Procédé de fonctionnement d'un appareil de cuisson à gaz et appareil de cuisson à gaz

Publications (2)

Publication Number Publication Date
EP2909535A1 true EP2909535A1 (fr) 2015-08-26
EP2909535B1 EP2909535B1 (fr) 2019-12-04

Family

ID=49261547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13770471.4A Active EP2909535B1 (fr) 2012-10-18 2013-09-26 Procédé de fonctionnement d'un appareil de cuisson gaz et cuisinière à gaz

Country Status (3)

Country Link
EP (1) EP2909535B1 (fr)
DE (1) DE102012219039A1 (fr)
WO (1) WO2014060201A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19601517B4 (de) * 1996-01-17 2006-01-19 Stiebel Eltron Gmbh & Co. Kg Regelung eines Gasheizgeräts
DE19757733A1 (de) * 1997-12-23 1999-06-24 Bosch Siemens Hausgeraete Gasbrenneranordnung
CN1190627C (zh) * 1998-11-24 2005-02-23 松下电器产业株式会社 燃气流量控制装置以及采用该燃气流量控制装置的燃气器具
DE29901632U1 (de) * 1999-02-02 1999-05-06 Kassebaum, Mirko, 32257 Bünde Sicherheitsvorrichtung für Gas-Verbraucher- und/oder Verteileranlagen
DE19949600A1 (de) 1999-10-14 2001-04-19 Bsh Bosch Siemens Hausgeraete Gasbeheiztes Hausgerät
DE10148642B4 (de) 2001-10-02 2006-04-27 Robert Seuffer Gmbh & Co. Kg Kochherd mit einer Bedieneinheit zum Bedienen wenigstens einer von einem Gasbrenner beheizten Kochstelle
ITTO20060728A1 (it) * 2006-10-11 2008-04-12 Indesit Co Spa Elettrodomestico di cottura a gas con valvole automatiche avente un sistema di sicurezza
US9317046B2 (en) * 2008-07-03 2016-04-19 Mike Gum Variable output heating control system
EP2312212B1 (fr) * 2009-10-14 2019-12-11 BSH Hausgeräte GmbH Poste de cuisson au gaz doté d'un brûleur à deux circuits

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014060201A1 *

Also Published As

Publication number Publication date
EP2909535B1 (fr) 2019-12-04
WO2014060201A1 (fr) 2014-04-24
DE102012219039A1 (de) 2014-04-24

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