EP1588099B1 - Cuisinière à gaz - Google Patents

Cuisinière à gaz Download PDF

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Publication number
EP1588099B1
EP1588099B1 EP04701602A EP04701602A EP1588099B1 EP 1588099 B1 EP1588099 B1 EP 1588099B1 EP 04701602 A EP04701602 A EP 04701602A EP 04701602 A EP04701602 A EP 04701602A EP 1588099 B1 EP1588099 B1 EP 1588099B1
Authority
EP
European Patent Office
Prior art keywords
gas
control
secondary line
point according
cooking point
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
EP04701602A
Other languages
German (de)
English (en)
Other versions
EP1588099A1 (fr
Inventor
Stephane Clauss
Gildas Violain
Martin Oberhomburg
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
Original Assignee
BSH Bosch und Siemens 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.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to EP04701602A priority Critical patent/EP1588099B1/fr
Publication of EP1588099A1 publication Critical patent/EP1588099A1/fr
Application granted granted Critical
Publication of EP1588099B1 publication Critical patent/EP1588099B1/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
    • 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
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves

Definitions

  • the present invention relates to a gas hob.
  • the gas hob has at least one gas burner and a control arrangement for setting a heating power of the gas burner. Furthermore, the control arrangement has at least one control element arranged in a gas main line to the gas burner, which adjusts a gas flow guided to a burner nozzle, and at least one auxiliary line running parallel to the control element with associated shut-off device for opening and closing the secondary line.
  • a generic gas hob which has a valve control arrangement in a gas supply to a gas burner.
  • the gas supply line branches into a number of parallel-connected partial gas lines, which are connected to the burner nozzle.
  • a switching valve for switching on and off of the partial gas flow flowing through it and a throttle element for throttling the partial gas flow flowing through it are arranged.
  • the object of the present invention is to provide a gas hob with at least one gas burner whose control arrangement enables reliable burner operation.
  • the object is achieved by a gas cooking point with the features of claim 1.
  • the at least one secondary line connected in parallel with a control element has a flow resistance limiting the gas flow rate in the secondary line. This is smaller than the flow resistance formed by the burner nozzle. A pressure drop in the gas flow through the secondary line is therefore greatly reduced. The greatly reduced pressure drop when the bypass is open leads to an improved primary air intake in the area of the Burner nozzle. The flame formation at the gas burner is therefore much more reliable at high gas flow rates.
  • the flow resistance in the secondary line can be determined in different ways.
  • the gas flow rate limiting flow resistance is determined by the smallest passage cross-section in the secondary line.
  • the smallest passage cross section in the secondary line is thus dimensioned larger than the passage cross section of the burner nozzle.
  • the secondary line is open only for setting the maximum gas flow rate.
  • the secondary line is therefore not used for setting partial gas flow rates.
  • the flow resistance in the bypass may be reduced to a negligible extent with respect to the flow resistance in the gas main. Irrespective of whether the control element arranged in the gas main line is open or closed, the maximum gas throughput always occurs when the secondary line is open.
  • the control arrangement may preferably have a number of control lines connected in parallel to one another with corresponding control or regulating members. These branch off from the gas main line and can each guide a partial gas flow rate to the burner nozzle. Compared to conventional gas cocks, no hysteresis effects arise with such a control arrangement.
  • the parallel control lines allow a much more accurate adjustment of the partial gas flow rate.
  • the maximum gas flow rate is established when all control lines of the control arrangement are open. In this case, however, the pressure loss in the control arrangement is substantially greater than when using a conventional, fully open gas cock. As a result of the secondary line according to the invention, the pressure loss at maximum gas throughput can be effectively reduced, in particular in the case of this control arrangement.
  • a switching valve with associated control throttle can be provided in the control lines.
  • the control throttle serves the limitation the gas flow rate to a partial gas flow rate.
  • the switching valve has only a closed and an open position.
  • the number of fittings in the secondary line such as the number of shut-off, control or regulating organs, limited to only one unthrottled obturator.
  • control lines are combined in a housing, for example a valve block.
  • the secondary line can be integrated in the housing of the control arrangement. A factory mounting of the controls or throttle elements is simplified when the throttle elements are removably inserted into mounting holes of the control lines of the housing of the control arrangement.
  • a conventional valve block is first prepared with a number of control lines.
  • control lines - with the exception of at least one control line - throttle elements are used.
  • the unthrottled control line forms the secondary line according to the invention.
  • the mounting opening of the unthrottled control line to be closed by a non-throttling closure element.
  • it can be mounted in the unthrottled control lines of the valve block, a throttle element whose passage cross-section is larger than the passage cross-section of the burner nozzle. From a manufacturing point of view, it is particularly advantageous if the assembly opening in the unthrottled control line is completely dispensed with in the production of the valve block.
  • FIG. 1 is a highly schematic diagram of a belonging to a gas burner gas burner 1 shown. This is connected via a main line 3 with a gas pipeline network. In the main line 3, a control arrangement 5 is arranged. By means of the control arrangement 5, a gas flow rate to the gas burner 1 is set in accordance with a desired heat output of the gas burner 1. Not shown are the usual for the gas hob security elements, such as a thermocouple and an associated solenoid valve for safety shutdown of the gas burner when extinguishing a flame.
  • the gas hob security elements such as a thermocouple and an associated solenoid valve for safety shutdown of the gas burner when extinguishing a flame.
  • the control arrangement 5 has three control lines 7, 9, 11 connected in parallel and a secondary line 13 connected in parallel thereto. Both the control lines 7, 9, 11 and the secondary line 13 branch off from the main line 3 and then reunite to a burner feed line 15. This opens into a burner nozzle 14.
  • This opens into a burner nozzle 14.
  • In each of these lines 7, 9, 11, 13 is one electrically actuated magnetic switching valve 17 is arranged.
  • the magnetic switching valves 17 are switchable from a closed position into an open position and can be activated via signal lines 19 by means of an electronic control device 21. Via the control device 21, a user can set heating power levels of the gas burner 1. As later from the FIG. 2 is described, is set in accordance with the selected Schuticiansscribe a partial gas flow rate Q 1 to Q 7 to the maximum gas flow rate Q 8 .
  • the control device 21 can control the magnetic switching valves 17 independently of each other.
  • the arranged in the control lines 7, 9, 11 solenoid valves 17 are throttle elements 23, 25, 27 connected downstream.
  • the Indian FIG. 6 indicated diameter d 1 of each throttle element 23, 25, 27 determines its passage cross-section.
  • the diameters d 1 in the control lines 7, 9, 11 are designed to be substantially smaller than a passage cross-section of the burner nozzle 14. Thus, in the present case, the diameter of the burner nozzle 14 in about 0.5 mm.
  • the throttle diameter d 1 of the throttle elements 23, 25, 27 is between 0.1 and 0.3 mm.
  • the secondary line 13 In contrast to the control lines 7, 9, 11, the secondary line 13 is unthrottled. As a result, the flow resistance in the unthrottled secondary line 13 is reduced as much as possible. Opposite the control lines 7, 9, 11, the pressure loss through the opened secondary line 13 is negligible. When the secondary line 13 is open, the maximum gas throughput Q 8 is therefore passed through the secondary line 13 without any significant pressure loss. To reduce the flow resistance of the passage cross section in the secondary line 13 is dimensioned substantially larger than the passage cross section of the burner nozzle 14th
  • the passage cross sections of the throttle elements 23, 25, 27 are designed factory. In the present case, about 65% of the maximum gas flow rate is conducted to the burner nozzle 14 when the control lines 7, 9, 11 are open. In this case, the first throttle element 23 allows about 20%, the second throttle element 25 about 24% and the third throttle element 27 about 30% of the maximum gas flow rate.
  • the heating power levels are adjustable by means of the electronic control device 21.
  • the partial gas flow rates Q 1 to Q 7 go from in the FIG. 2 shown flow characteristic of the control assembly 5. If the user selects the eighth heating power stage, then the electronic control device 21 opens the solenoid valve 17 in the secondary line 13. As a result, the maximum gas flow rate Q 8 to the burner nozzle 14 is set.
  • both the control lines 7, 9, 11 and the secondary line 13 are integrated in a housing 33 shaped as a compact valve block.
  • the valve block 33 made of plastic has on one side a semi-circular in side view inlet port 35. This sits positively on an outer circumference of the pipe designed as a main line 3.
  • the main line 3 is gas-tight pressed to the inlet port 35.
  • an outlet port 37 is formed on the valve block 33.
  • the burner supply line 15 is inserted gas-tight.
  • four solenoid valve heads 39 of the solenoid valves 17 are mounted in the valve block 33.
  • valve block 33 is shown in a side sectional view.
  • the region of the inlet connection 35, 37 is shown in a first sectional plane X.
  • a second sectional plane Y Parallel to this, in a second sectional plane Y, the central area of the valve block 33 between the inlet and outlet ports 35, 37 is shown.
  • a third sectional plane Z of the region of the outlet port 37 is shown. From the FIG. 4 shows that in the valve block 33 to each other opposite horizontal blind holes 41, 43 extend. These each open into the inlet port 35 and into the outlet port 37 of the valve block 33 and are aligned parallel to each other.
  • the control lines 7, 9, 11 connect the inlet bag bore 41 with the outlet bag bore 43.
  • each of the control lines 7, 9, 11 has a valve channel 45.
  • the valve channel 45 extends perpendicular to the horizontal blind holes 41, 43.
  • a channel end of the valve channel 45 opens into a circular recess 51, which in Valve block 33 is incorporated.
  • the circular recess 51 forms a valve seat for a valve plate 53 of the solenoid valve head 39, as shown in the FIG. 4 indicated by dashed lines.
  • a first passage channel 55 with a small diameter which leads to the inlet bag bore 41.
  • the valve channel 45 is connected to the outlet bag bore 43 via a second passage 57.
  • Each of the control lines 7, 9, 11 extending between the blind bores 41, 43 is consequently formed by the first passage 55, the valve passage 45 and the second passage 57.
  • valve plate 53 of the solenoid valve heads 39 is located on the recessed valve seat 51.
  • the valve channel 45 of the corresponding control line is closed, whereby the control line is closed as such.
  • the valve plate 53 is out of engagement with the valve seat 51. In this case, the corresponding control line is open.
  • the recessed valve seat 51 opens each of the valve channels 45 in a mounting hole 59.
  • the throttle elements 23, 25, 27 can be mounted, as shown in the FIG. 6 is indicated.
  • the throttle element 25 is designed as an insert nozzle. This can be screwed into the mounting opening 59 of the valve channel 45.
  • the configuration of the secondary line 13 in the valve block 33 is explained below.
  • the secondary line 13 is formed according to the control lines through the first passageway 55, the valve channel 45 and the second passageway 57.
  • the secondary line 13 is unthrottled. That is, that no insert nozzle 25 is arranged in the secondary line 13.
  • the largest possible passage cross section in the secondary line 13 is achieved.
  • the diameter d 2 of the passage channel 55 is about 1.5 to 2 mm.
  • the diameter d 2 of the first passageway 55 is considerably larger than the diameter of the burner nozzle 14.
  • a closure element 61 is inserted. This closes the mounting opening 59, without throttling the secondary line 13.
  • the closure member 61 may be omitted when the factory production of the valve block 33 is completely dispensed with the mounting hole in the secondary line 13. In this case, the secondary line 13 is closed in the region of the mounting holes 59 in the valve block 33, without the secondary line 13 is throttled.
  • control arrangement 5 it is also possible, by cyclically switching on and off of the solenoid valves 17 of the control lines 7, 9, 11 to achieve small continuous heating powers on the gas burner 1. It is advantageous that in the control arrangement 5, a re-ignition at each preset heating power can be done very reliable.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Magnetic Heads (AREA)
  • Continuous Casting (AREA)

Claims (13)

  1. Cuisinière à gaz comprenant au moins un brûleur à gaz (1) et un dispositif de commande (5) pour le réglage d'une puissance de chauffage du brûleur à gaz (1), lequel dispositif de commande (5) présente au moins un organe de commande (23, 25, 27), disposé dans une conduite principale de gaz (3, 15) pour le brûleur à gaz (1), lequel organe règle un débit de gaz (Q1 à Q8) guidé vers une buse de brûleur (14), et au moins une conduite secondaire (13), agencée parallèlement à l'organe de commande, pour la buse de brûleur (14) avec un organe d'arrêt (17) attribué pour l'ouverture et la fermeture de la conduite secondaire (13), caractérisée en ce que la résistance à l'écoulement limitant le débit de gaz dans la conduite secondaire (13) est conçue inférieure à la résistance à l'écoulement formée par la buse de brûleur (14).
  2. Cuisinière à gaz selon la revendication 1, caractérisée en ce que la résistance à l'écoulement limitant le débit de gaz est formée par la section de passage la plus petite dans la conduite secondaire (13).
  3. Cuisinière à gaz selon la revendication 1 ou 2, caractérisée en ce que la plus petite section de passage dans la conduite secondaire (13) est supérieure à la section de passage de la buse de brûleur (14).
  4. Cuisinière à gaz selon l'une quelconque des revendications précédentes, caractérisée en ce que la conduite secondaire (13) est ouverte au moins lors du réglage d'un débit de gaz maximum (Q8).
  5. Cuisinière à gaz selon la revendication 4, caractérisée en ce que la conduite secondaire (13) est fermée lors du réglage d'un débit de gaz partiel (Q1 à Q7) et n'est ouverte que lors du réglage du débit de gaz maximum (Q8).
  6. Cuisinière à gaz selon l'une quelconque des revendications précédentes, caractérisée en ce que l'organe d'arrêt (17) pour l'ouverture et la fermeture de la conduite secondaire (13) est conçu comme une vanne de commande non étranglée.
  7. Cuisinière à gaz selon l'une quelconque des revendications précédentes, caractérisée en ce que l'agencement de commande (5) présente un certain nombre d'organes de commande (23, 25, 27) commandés parallèlement entre eux, qui sont prévus dans des conduites de commande (7, 9, 11) déviant de la conduite principale (3, 15).
  8. Cuisinière à gaz selon la revendication 7, caractérisée en ce que les conduites de commande (7, 9, 11) et la conduite secondaire (13) sont conçues dans un boîtier (33) commun.
  9. Cuisinière à gaz selon l'une quelconque des revendications 7 ou 8, caractérisée en ce que les conduites de commande et conduites secondaires (7, 9, 11, 13) présentent chacune une ouverture de montage (59) pour l'insertion des organes de commande (23, 25, 27).
  10. Cuisinière à gaz selon la revendication 9, caractérisée en ce que l'ouverture de montage (59) de la conduite secondaire (13) est fermée, par exemple par un élément de fermeture (61).
  11. Cuisinière à gaz selon l'une quelconque des revendications précédentes, caractérisée en ce que l'agencement de commande (5) est conçu de telle sorte que les débits de gaz partiels (Q1 à Q7) augmentent jusqu'à environ 60 % du débit de gaz maximum (Q8) dans une première pente sensiblement constante.
  12. Cuisinière à gaz selon la revendication 11, caractérisée en ce que les débits de gaz partiels (Q1 à Q7) augmentent à partir d'environ 60 % du débit de gaz maximum (Q8) dans une seconde pente jusqu'au débit de gaz maximum (Q8), qui est supérieure à la première pente.
  13. Cuisinière à gaz selon l'une quelconque des revendications précédentes, caractérisée en ce que, lors du réglage du débit de gaz maximum (Q8), la conduite principale, en particulier les conduites de commande (7, 9, 11) déviant de la conduite principale (3, 15) sont ouvertes.
EP04701602A 2003-01-13 2004-01-13 Cuisinière à gaz Expired - Lifetime EP1588099B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04701602A EP1588099B1 (fr) 2003-01-13 2004-01-13 Cuisinière à gaz

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP03360005 2003-01-13
EP03360005 2003-01-13
PCT/EP2004/000171 WO2004063629A1 (fr) 2003-01-13 2004-01-13 Rechaud a gaz et procede de fabrication associe
EP04701602A EP1588099B1 (fr) 2003-01-13 2004-01-13 Cuisinière à gaz

Publications (2)

Publication Number Publication Date
EP1588099A1 EP1588099A1 (fr) 2005-10-26
EP1588099B1 true EP1588099B1 (fr) 2011-03-16

Family

ID=32695663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04701602A Expired - Lifetime EP1588099B1 (fr) 2003-01-13 2004-01-13 Cuisinière à gaz

Country Status (6)

Country Link
US (1) US7513247B2 (fr)
EP (1) EP1588099B1 (fr)
AT (1) ATE502257T1 (fr)
DE (1) DE502004012305D1 (fr)
ES (1) ES2363223T3 (fr)
WO (1) WO2004063629A1 (fr)

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US8087407B2 (en) 2004-03-23 2012-01-03 Middleby Corporation Conveyor oven apparatus and method
US9585400B2 (en) 2004-03-23 2017-03-07 The Middleby Corporation Conveyor oven apparatus and method
WO2007020189A1 (fr) * 2005-08-16 2007-02-22 BSH Bosch und Siemens Hausgeräte GmbH Dispositif d'augmentation de puissance limitee dans le temps
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EP2217859A4 (fr) 2007-11-16 2011-07-13 Wolfedale Eng Ltd Appareil de régulation de température pour un barbecue
US8863734B2 (en) * 2008-12-01 2014-10-21 General Electric Company Gas grill
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KR20120042851A (ko) 2009-07-24 2012-05-03 베에스하 보쉬 운트 지멘스 하우스게랫테 게엠베하 가스 밸브 유닛의 작동 메커니즘
KR101670112B1 (ko) 2009-07-24 2016-10-27 베에스하 하우스게랫테 게엠베하 가스 밸브 유닛의 스위치
US8839714B2 (en) 2009-08-28 2014-09-23 The Middleby Corporation Apparatus and method for controlling a conveyor oven
CN103221746B (zh) * 2010-05-20 2015-12-02 Bsh家用电器有限公司 带有两个煤气出口的煤气阀单元
DE102010039010A1 (de) 2010-08-06 2012-02-09 BSH Bosch und Siemens Hausgeräte GmbH Gasventileinheit
DE102010039009A1 (de) 2010-08-06 2012-02-09 BSH Bosch und Siemens Hausgeräte GmbH Gasventileinheit
DE202010018527U1 (de) 2010-08-13 2017-05-29 Ebm-Papst Landshut Gmbh Mischvorrichtung zur Mischung von Verbrennungsluft und Gas sowie Feuerungseinrichtung
US8881769B2 (en) * 2010-09-20 2014-11-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Structure of a gas-valve unit
EP2649354B1 (fr) 2010-10-15 2019-05-01 BSH Hausgeräte GmbH Unité vanne à gaz
US8783243B2 (en) 2010-10-25 2014-07-22 General Electric Company Lockout system for surface burners of a cooking appliance
EP2652398B1 (fr) * 2010-12-14 2020-02-12 BSH Hausgeräte GmbH Unité vanne à gaz pour un brûleur à deux circuits
KR102002191B1 (ko) * 2011-09-16 2019-07-19 베에스하 하우스게랫테 게엠베하 가스 밸브 유닛
ES2430939R1 (es) * 2012-05-22 2014-03-03 BSH Electrodomésticos España S.A. Aparato de cocción calentado a gas
DE102012017207A1 (de) * 2012-08-31 2014-03-06 Robert Bosch Gmbh Verfahren zum Ansteuern einer hydraulischen Ventilanordnung und hydraulische Ventilanordnung
ES2799415T3 (es) * 2013-03-13 2020-12-17 Bsh Hausgeraete Gmbh Unidad de válvulas de gas
US9841191B2 (en) * 2015-04-22 2017-12-12 Whirlpool Corporation Appliance with electronically-controlled gas flow to burners
PL3220046T3 (pl) 2016-03-17 2019-09-30 BSH Hausgeräte GmbH Armatura gazowa i urządzenie do gotowania
CA3025183A1 (fr) 2016-06-14 2017-12-21 The Middleby Corporation Collecteur de four a convoyeur a convection et systeme d'amortisseur
TR201611375A2 (en) * 2016-08-12 2018-02-21 Bsh Ev Aletleri San Ve Tic As Control Knob Equipped with a Gear Box for Controlling the Power Level of the Burner in a Gas Cooker

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US6609904B2 (en) * 2001-01-03 2003-08-26 Wen-Chou Chen Gas furnace control arrangement

Also Published As

Publication number Publication date
ES2363223T3 (es) 2011-07-27
DE502004012305D1 (de) 2011-04-28
WO2004063629A1 (fr) 2004-07-29
ATE502257T1 (de) 2011-04-15
US7513247B2 (en) 2009-04-07
US20060016444A1 (en) 2006-01-26
EP1588099A1 (fr) 2005-10-26

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