EP2312212B1 - Poste de cuisson au gaz doté d'un brûleur à deux circuits - Google Patents

Poste de cuisson au gaz doté d'un brûleur à deux circuits Download PDF

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Publication number
EP2312212B1
EP2312212B1 EP10186943.6A EP10186943A EP2312212B1 EP 2312212 B1 EP2312212 B1 EP 2312212B1 EP 10186943 A EP10186943 A EP 10186943A EP 2312212 B1 EP2312212 B1 EP 2312212B1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
power
gas flow
power range
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
EP10186943.6A
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German (de)
English (en)
Other versions
EP2312212A3 (fr
EP2312212A2 (fr
Inventor
Stéphane CLAUSS
Erdogan Gulyaz
Martina Kunze
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
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Priority to EP10186943.6A priority Critical patent/EP2312212B1/fr
Publication of EP2312212A2 publication Critical patent/EP2312212A2/fr
Publication of EP2312212A3 publication Critical patent/EP2312212A3/fr
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Publication of EP2312212B1 publication Critical patent/EP2312212B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • 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
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings
    • 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

Definitions

  • the invention relates to a gas hob with a gas burner, which comprises an internal burner and at least one external burner, and a gas supply unit according to the preamble of one of the independent claims 1 or 6.
  • the gas burner of the generic gas hob has an internal burner and an external burner, which are supplied separately from each other with gas. Such gas burners are also referred to as two-circuit burners.
  • a gas supply unit which usually comprises a mechanically or electrically actuable gas valve, controls the gas flow to the internal burner and the external burner of the gas burner in dependence on the specification by an operator by means of a suitable operating element.
  • a control element is, for example, a mechanically operable rotary knob, but also an electronic user interface, such as a plus / minus button or a touch slider into consideration.
  • a first power range is defined with low burner power, in which only the gas flow to the internal burner is open.
  • the gas flow to the internal burner can be varied between a minimum value and a maximum value.
  • the gas flow is opened to the outer burner.
  • burner power adjustment is usually accomplished by varying the gas flow to the outside burner between a minimum and a maximum value.
  • the gas flow to the internal burner is set to the maximum value.
  • a gas hob which has a gas burner comprising an internal burner and an external burner.
  • a gas supply unit designed as a gas tap is embodied such that in a first power range of the gas burner the gas flow to the internal burner is at least temporarily open and the gas flow to the outside burner is interrupted. In a second power range of the gas burner, the gas flow is continuously opened to both the inner burner and the outer burner and is varied between a minimum value and a maximum value for adjusting the burner output.
  • the present invention has for its object to provide a generic gas hob available, which has a continuous performance as possible.
  • a first solution of this object according to the invention provides that the gas supply unit is designed such that in the second power range of the gas burner for adjusting the burner output, the gas flow to the internal burner is additionally varied between a minimum value and a maximum value. This adjusts the burner output in the second power range both via the internal burner and via the external burner. This enables a particularly differentiated setting of the burner output, in particular with a small burner output within the second power range.
  • the gas flow to the inner burner is smaller than at the largest burner output within the first power range.
  • the gas flow to the internal burner may be set to a minimum value.
  • the total power of the gas burner is only slightly higher than the maximum burner power within the first power range, if the gas flow to the internal burner is at a maximum and the gas flow to the outside burner is interrupted.
  • the gas flow to the internal burner is set to the maximum value.
  • the adjustability of the gas flow to the internal burner is only within the second power range used to minimize the smallest burner power within the second power range.
  • the gas supply unit may be designed such that, at least at a certain burner power within the second power range of the gas burner, in particular at the smallest burner power within the second power range, the gas flow to the outer burner is timed. By cycling the gas flow, the average power of the gas burner averaged over time can be further reduced. This can be used within the second power range of the gas burner to set the minimum power to a particularly small value.
  • the clock ratio between the switch-on time and the switch-off time of the gas flow to the external burner is variable.
  • the object mentioned at the outset is likewise achieved in that the gas supply unit is designed such that the gas flow to the outer burner is timed at least at the smallest burner output within the second power range of the gas burner.
  • the average power of the gas burner, averaged over time can be set to particularly low values by cycling the outer burner.
  • the internal burner burns continuously and can be set to a constant power value.
  • the gas flow to the outer burner is continuously opened.
  • a clocking of the outer burner is thus only at low burner power within the second power range.
  • the open gas flow to the outer burner is set to the minimum value.
  • the lowest power level within the second power range of the gas burner provides that the gas flow is clocked to the outer burner and also on the Minimum value is set.
  • the next power stage provides that the outer burner burns continuously with a minimum value of the gas flow.
  • the gas flow to the outer burner can be increased stepwise up to a maximum value.
  • the gas flow to the internal burner is continuously opened.
  • the flames on the inner burner can then be used, for example, to ignite the outer burner when it is operated in clock mode.
  • the opened gas flow to the internal burner is set to a constant value, preferably to a maximum value.
  • the power control in the second power range then takes place completely by means of the outer burner.
  • the duty cycle between on-time and off-time of the outer burner is variable.
  • the burner averaged over time can be adjusted in this way.
  • the opened gas flow is varied to the internal burner between a minimum value and a maximum value.
  • the power setting thus takes place by adjusting the flame size on the internal burner.
  • the gas supply unit may be designed such that a low-power region of the gas burner is provided, in which the gas flow to the internal burner is timed and the gas flow to the external burner is interrupted. It is possible to perform the first power range of the gas burner as a low power range. The power setting then takes place in the first power range exclusively by changing the clock ratio between the on-time and off time of the gas burner, while the flame size is set to a constant value during the switch-on.
  • the Low-power range can also be provided in addition to the first power range of the gas burner. In this case, in the first power range, the burner output is adjusted by varying the gas flow to the constantly burning internal burner. Even lower performance of the gas burner are achieved in the low power range by the inner burner is clocked at the lowest flame.
  • the duty cycle between on time and off time of the indoor burner is variable.
  • the gas flow to the internal burner is set to the minimum value.
  • FIG. 1 is shown as a two-circuit burner gas burner 1 is shown.
  • the gas burner 1 comprises an outer burner 2 with gas outlet openings 3 and an inner burner 4 with gas outlet openings 5.
  • the outer burner 2 and the inner burner 4 can be supplied with gas independently of each other.
  • a gas supply unit 14 provided for this purpose is in FIG. 2 shown.
  • the gas supply unit 14 comprises a main gas line 6, in which a main gas valve 7 is arranged. From the main gas line 6 branches off behind the main gas valve 7, a branch line 8 to the outer burner 2 and a branch line 9 to the inner burner 4 from.
  • a branch line 8 In each of the branch lines 8, 9 is an open-close valve 10, which may be embodied for example as a solenoid valve, and a control valve 11.
  • the opening cross section of the respective branch line 8, 9 and thus the size of the gas flow to External burner 2 or the internal burner 4 are continuously or multi-stage set.
  • the control valves 11 can be driven, for example, by means of a respective stepping motor.
  • FIG. 3 the performance curve of a gas burner 1 in a gas hob of the prior art is shown.
  • Plotted on the right-hand side of the diagram are the power levels that can be selected by an operator at an appropriate user interface.
  • a user interface for example, a latched rotary knob, plus / minus buttons or a slider into consideration.
  • the power output of the gas burner 1 is plotted on the vertical axis of the diagram.
  • the power curve comprises three areas, a low power area 20, a first power region 21 and a second power region 22.
  • the adjustment range of the gas burner 1 begins with the low-power region 20, in which the gas flow to the inner burner 4 is timed and the gas flow to the outer burner 2 is interrupted.
  • the different power levels within the low power range 20 are achieved by varying the duty cycle between on time and off time of the indoor burner 4.
  • the gas flow to the internal burner 4 is set to a minimum value.
  • the minimum value of the gas flow is such that the flames on the internal burner 4 are as small as possible without extinguishing by themselves.
  • the gas flow to the inner burner 4 is continuously opened, while the gas flow to the outer burner 2 is still closed.
  • the different power levels within the first power range 21 are achieved by gradually increasing the gas flow to the internal burner 4 from the minimum value to a maximum value.
  • the outer burner 2 is switched on.
  • the different power levels within the second power range 22 are achieved by varying the gas flow to the outer burner 2 between a minimum value and a maximum value.
  • the flames on the outer burner 2 continuously and the gas flow to the inner burner 4 is set constant to the maximum value.
  • a disadvantage of this performance characteristic of a gas hob of the prior art is that in the region 15 of the transition from the first power region 21 to the second power region 22, a jump in performance arises that may be surprising for the operator of the gas hob. In addition, there is no possibility in region 15 of setting the power output of the gas burner 1 to an intermediate value.
  • FIG. 4 shows the performance curve of the gas burner 1 of a gas hob according to the invention, in which in the region of the transition between the first power region 21 and the second power region 22, the power curve is continuous and beyond, in comparison to the curve according to FIG. 3 , in this area an intermediate level exists.
  • the power levels of the gas burner 1 are illustrated by a bar chart. Analogous to the FIGS. 3 and 4 On the right axis, the power levels selectable by the operator with the user interface are plotted, and the power output of the gas burner 1 is plotted on the vertical axis.
  • the beams are divided into a lower portion and an upper portion.
  • the lower section of each bar represents the output of the internal burner 4, the upper section of the bar the output of the external burner 2.
  • a longitudinally dashed bar means that the relevant gas burner 1 is operated in a time-clocked mode.
  • the height of the bar here reflects the power output of the gas burner 1 during its switch-on time.
  • the average power of the gas burner 1, averaged over time is indicated by a horizontal bar in the area of the relevant bar.
  • FIG. 5 describes a first preferred embodiment of the invention with reference to the power levels of the gas burner 1.
  • the low-power region 20 of the inner burner 4 is operated in timed-clock mode.
  • the gas flow to the continuously burning internal burner 4 is gradually increased.
  • the second power range 22 of the outer burner 2 is switched on and the gas flow to the outer burner 2 increases gradually.
  • the gas flow to the internal burner 4 is set to a smaller value than in the remaining stages of the second power range 22.
  • the gas flow to the internal burner 4 in the stage 16 is set to a minimum value.
  • the Gas flow to the outer burner 2 is also set to a minimum value in the stage 16. In this way, in the stage 16, a total output of the gas burner 1 is achieved, which is greater than the maximum power within the first power range 21 and less than the total power of the gas burner 1 in the power stage 17, in which the gas flow to the internal burner 4 to a Maximum value is set and the gas flow to the outer burner 2 to a minimum value.
  • FIG. 6 illustrates the second embodiment of the invention, in which in the power stage 16 a comparable overall performance of the gas burner 1 is achieved as in the embodiment according to FIG. 5 in the power stage 16.
  • the gas flow to the internal burner 4 is set to a maximum value.
  • the gas flow to the outer burner 2 is set to a minimum value and moreover clocked in time.
  • the cycle ratio between the on-time and the off-time of the outer burner is such that the total output of the gas burner 1 in the power stage 16a is between the highest power in the first power range 21 and the total power of the gas burner 1 in the next higher power level 17.
  • a continuous transition between the first power region 21 and the second power region 22 is ensured with regard to the power output of the gas burner 1.
  • the power difference between the highest power in the first power range 21 and the lowest power in the second power range 22 substantially corresponds to the power difference between two levels within the second power range 22.
  • An alternative variant of the invention provides to combine the two embodiments of the invention described above and thus to allow both a clocking of the gas flow to the outer burner 2 and a variation of the gas flow to the inner burner 4 in the second power range of the gas burner. It is possible either to clock either the gas flow to the outer burner 2 or to vary the gas flow to the inner burner 4. It is also possible to simultaneously clock the gas flow to the outer burner 2 and to vary the gas flow to the inner burner 4.

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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)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Claims (15)

  1. Poste de cuisson à gaz avec un brûleur à gaz (1), qui comprend un brûleur intérieur (4) et au moins un brûleur extérieur (2), et une unité d'alimentation en gaz (14), exécutée de telle sorte que
    - dans une première plage de puissance (21) du brûleur à gaz (1) le flux de gaz vers le brûleur intérieur (4) est ouvert au moins par intermittence et le flux de gaz vers le brûleur extérieur (2) est interrompu, et en ce que
    - dans une deuxième plage de puissance (22) du brûleur à gaz (1) le flux de gaz vers le brûleur intérieur (4) est ouvert en permanence et le flux de gaz vers le brûleur extérieur est ouvert au moins par intermittence et le flux de gaz ouvert vers le brûleur extérieur (2) est modifié entre une valeur minimale et une valeur maximale pour le réglage de la puissance du brûleur ; dans la deuxième plage de puissance (22) du brûleur à gaz (1) le flux de gaz vers le brûleur intérieur (4) est également modifié entre une valeur minimale et une valeur maximale pour le réglage de la puissance du brûleur, et en ce que la deuxième plage de puissance (22) comprend un premier niveau de puissance (16) et un deuxième niveau de puissance (17) ;
    caractérisé en ce que la première plage de puissance (21) et la deuxième plage de puissance (22) se chevauchent, et en ce que dans le premier niveau (16), le flux de gaz vers le brûleur intérieur (4) est réglé selon une valeur inférieure à celle des autres niveaux de la deuxième plage de puissance (22), de telle sorte que dans le premier niveau de puissance (16) une puissance fournie du brûleur à gaz (1) supérieure à une puissance la plus élevée dans la première plage de puissance (21) et inférieure à une puissance totale du brûleur à gaz (1) dans le deuxième niveau de puissance (17) est globalement atteinte.
  2. Poste de cuisson à gaz selon la revendication 1, caractérisé en ce que pour la plus petite puissance de brûleur dans la deuxième plage de puissance (22), le flux de gaz vers le brûleur intérieur (4) est inférieur à celui de la puissance de brûleur la plus élevée dans la première plage de puissance (21).
  3. Poste de cuisson à gaz selon la revendication 1 ou 2, caractérisé en ce que pour une puissance de brûleur moyenne dans la deuxième plage de puissance (22), le flux de gaz vers le brûleur intérieur (4) est réglé selon la valeur maximale.
  4. Poste de cuisson à gaz selon l'une des revendications 1 à 3, caractérisé en ce que l'unité d'alimentation en gaz (14) est exécutée de telle sorte que le flux de gaz vers le brûleur extérieur (2) soit cadencé dans le temps au moins pour une puissance de brûleur déterminée dans la deuxième plage de puissance (22) du brûleur à gaz (1), en particulier pour la plus petite puissance de brûleur dans la deuxième plage de puissance (22).
  5. Poste de cuisson à gaz selon la revendication 4, caractérisé en ce que pour le réglage de la puissance de brûleur dans la deuxième plage de puissance (22), le rapport de cadencement entre la durée d'activation et la durée de désactivation du flux de gaz vers le brûleur extérieur (2) est variable.
  6. Poste de cuisson à gaz avec un brûleur à gaz (1), qui comprend un brûleur intérieur (4) et au moins un brûleur extérieur, et une unité d'alimentation en gaz (14), exécutée de telle sorte que
    - dans une première plage de puissance (21) du brûleur à gaz (1) le flux de gaz vers le brûleur intérieur (4) est ouvert au moins par intermittence et le flux de gaz vers le brûleur extérieur (2) est interrompu, et en ce que
    - dans une deuxième plage de puissance (22) du brûleur à gaz (1), le flux de gaz vers le brûleur extérieur (2) est ouvert au moins par intermittence et le flux de gaz ouvert vers le brûleur extérieur (2) est modifié entre une valeur minimale et une valeur maximale pour le réglage de la puissance du brûleur,
    caractérisé en ce que l'unité d'alimentation en gaz (14) est exécutée de telle sorte que le flux de gaz vers le brûleur extérieur (2) soit cadencé dans le temps au moins pour la plus petite puissance de brûleur dans la deuxième plage de puissance du brûleur à gaz (1).
  7. Poste de cuisson à gaz selon la revendication 6, caractérisé en ce que le flux de gaz vers le brûleur extérieur (2) est ouvert en continu pour une puissance de brûleur moyenne et/ou élevée dans la deuxième plage de puissance (22).
  8. Poste de cuisson à gaz selon la revendication 6 ou 7, caractérisé en ce qu'au moins pour la plus petite puissance de brûleur dans la deuxième plage de puissance (22), le flux de gaz ouvert vers le brûleur extérieur (2) est réglé selon la valeur minimale.
  9. Poste de cuisson à gaz selon l'une des revendications 6 à 8, caractérisé en ce que le flux de gaz vers le brûleur intérieur (4) est ouvert en permanence dans la deuxième plage de puissance (22).
  10. Poste de cuisson à gaz selon l'une des revendications 6 à 9, caractérisé en ce que dans la deuxième plage de puissance (22), le flux de gaz ouvert vers le brûleur intérieur (4) est réglé selon une valeur constante, de préférence selon une valeur maximale.
  11. Poste de cuisson à gaz selon l'une des revendications 6 à 10, caractérisé en ce que pour le réglage de la puissance de brûleur dans la deuxième plage de puissance (22), le rapport de cadencement entre la durée d'activation et la durée de désactivation du brûleur extérieur (2) est variable.
  12. Poste de cuisson à gaz selon l'une des revendications 1 à 11, caractérisé en ce que dans la première plage de puissance (21) du brûleur à gaz (1), le flux de gaz ouvert vers le brûleur intérieur (4) est modifié entre une valeur minimale et une valeur maximale.
  13. Poste de cuisson à gaz selon l'une des revendications 1 à 12, caractérisé en ce que l'unité d'alimentation en gaz (14) est exécutée de telle sorte qu'une plage à faible puissance du brûleur à gaz (1) est prévue, dans laquelle le flux de gaz vers le brûleur intérieur (4) est cadencé dans le temps et le flux de gaz vers le brûleur extérieur (2) est interrompu.
  14. Poste de cuisson à gaz selon l'une des revendications 1 à 13, caractérisé en ce que pour le réglage de la puissance de brûleur dans la plage à faible puissance (20), le rapport de cadencement entre la durée d'activation et la durée de désactivation du brûleur intérieur (4) est variable.
  15. Poste de cuisson à gaz selon l'une des revendications 1 à 14, caractérisé en ce que dans la plage à faible puissance (20), le flux de gaz vers le brûleur intérieur (4) est réglé selon la valeur minimale.
EP10186943.6A 2009-10-14 2010-10-08 Poste de cuisson au gaz doté d'un brûleur à deux circuits Active EP2312212B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10186943.6A EP2312212B1 (fr) 2009-10-14 2010-10-08 Poste de cuisson au gaz doté d'un brûleur à deux circuits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09290791 2009-10-14
EP10186943.6A EP2312212B1 (fr) 2009-10-14 2010-10-08 Poste de cuisson au gaz doté d'un brûleur à deux circuits

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EP2312212A2 EP2312212A2 (fr) 2011-04-20
EP2312212A3 EP2312212A3 (fr) 2018-01-03
EP2312212B1 true EP2312212B1 (fr) 2019-12-11

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DE102010006276A1 (de) * 2010-01-25 2011-07-28 E.G.O. Elektro-Gerätebau GmbH, 75038 Zweikreis-Brennersystem und Verfahren zum Betrieb eines solchen Zweikreis-Brennersystems
EA022688B1 (ru) * 2010-05-20 2016-02-29 Бсх Хаусгерете Гмбх Газовый клапан для двухконтурной горелки
ITMI20111738A1 (it) * 2011-09-27 2013-03-28 Smeg Spa Bruciatore per un piano di cottura a gas e piano di cottura a gas incorporante tale bruciatore
DE102012200342B4 (de) * 2012-01-11 2017-03-23 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Ansteuerung mehrerer Gasbrenner eines Gaskochfeldes
FR2988812B1 (fr) * 2012-03-30 2018-07-13 Sunaero-Helitest Dispositif et procede pour emettre un rayonnement infrarouge par combustion catalytique, et module de commande pour commander un tel dispositif suivant un tel procede
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
DE102012219039A1 (de) * 2012-10-18 2014-04-24 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Gaskochgeräts und Gaskochgerät
DE102012023434A1 (de) * 2012-11-30 2014-06-05 German Gabtec Gmbh Steuern der Gaszufuhr eines Gasbrenners
EP3376104A1 (fr) * 2017-03-16 2018-09-19 Vestel Elektronik Sanayi ve Ticaret A.S. Brûleur à gaz réglable
CN118234995A (zh) * 2021-10-29 2024-06-21 Bsh家用电器有限公司 操作双回路气体燃烧器的方法、控制单元、双回路气体燃烧器和燃气炉

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US2781779A (en) * 1952-01-26 1957-02-19 W J Schoenberger Co Gas range burner control
JPS5636929U (fr) * 1979-08-27 1981-04-08
DE19949600A1 (de) * 1999-10-14 2001-04-19 Bsh Bosch Siemens Hausgeraete Gasbeheiztes Hausgerät
US6315552B1 (en) * 2000-03-31 2001-11-13 General Electric Company Dual fuel circuit gas burner
ITVE20070031A1 (it) * 2007-05-17 2008-11-18 Defendi Italy Srl Rubinetto gas con sicurezza per bruciatore dual.

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EP2312212A3 (fr) 2018-01-03
EP2312212A2 (fr) 2011-04-20

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