EP2177830A1 - Brûleur à gaz pour une régulation combinée gaz-air - Google Patents

Brûleur à gaz pour une régulation combinée gaz-air Download PDF

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Publication number
EP2177830A1
EP2177830A1 EP08166811A EP08166811A EP2177830A1 EP 2177830 A1 EP2177830 A1 EP 2177830A1 EP 08166811 A EP08166811 A EP 08166811A EP 08166811 A EP08166811 A EP 08166811A EP 2177830 A1 EP2177830 A1 EP 2177830A1
Authority
EP
European Patent Office
Prior art keywords
gas
mixture
burner
region
air
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.)
Withdrawn
Application number
EP08166811A
Other languages
German (de)
English (en)
Inventor
Rainer Lochschmied
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.)
Siemens Building Technologies HVAC Products GmbH
Original Assignee
Siemens Building Technologies HVAC Products 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 Siemens Building Technologies HVAC Products GmbH filed Critical Siemens Building Technologies HVAC Products GmbH
Priority to EP08166811A priority Critical patent/EP2177830A1/fr
Publication of EP2177830A1 publication Critical patent/EP2177830A1/fr
Withdrawn legal-status Critical Current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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • 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
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Definitions

  • the present invention relates to a gas burner with a mixture distributor, a arranged in the flame region of a burner surface ionization, which detects a dependent of the combustion of a gas-air mixture ionization current, a signal processing device which provides a function of an ionization current signal a controlled variable for a control device, the sets the gas-air ratio for combustion to a setpoint.
  • a gas burner of the type mentioned is for example from the EP 1 036 984 B1 known.
  • the known premix burner has a mixture distributor in the form of a burner plate, which is provided with a plurality of mixture through-openings.
  • An ionization electrode is disposed on the left edge of the burner plate and extends into the region of the burner plate.
  • the mixture passage area of the mixture distributor is increased, as a result of which the surface load of the burner in the region of the ionization electrode is increased.
  • the ionization signal can be processed by an additional electronics such that it represents the air ratio of the premix burner.
  • the ionization signal is determined by the flow resistance of the burner surface in the region of the ionization electrode. For a given burner power, the ionization signal can not be increased further with the measure known from the prior art.
  • the invention has for its object to improve a gas burner in such a way that it provides an ionization current signal for a gas-air composite control, the signal swing is improved over the entire power range of the burner.
  • the gas burner has a mixture supply space comprising an ionization electrode associated region which is separated by a separation from the remaining region of the mixture supply space, wherein the mixture supply space is constructed so that the gas-air Mixture in which the ionization electrode associated region has a higher pressure than in the remaining region of the mixture supply space.
  • the invention has the advantage that, because of the higher pressure prevailing in the region of the ionization electrode in the mixture supply space, the flow rate of the gas-air mixture per unit area of the burner surface in the region of the ionization electrode is increased, whereby the ionization current detected by the ionization electrode over the entire power range of the Brenners is increased.
  • openings (29) can be changed by means of an exchangeable insert, whereby the pressure drop caused by the openings (29) can be adapted to the burner output or to the burner type.
  • the mixture supply space 26, 27 is closed by a mixture distributor 24 and a burner end 30.
  • the mixture distributor has a homogeneous mixture passage area on, through which the gas-air mixture 12 flows through a homogeneous burner surface 23 into a combustion chamber 28 in which the gas-air mixture is ignited and burned.
  • the ionization electrode 2 detects a dependent of the combustion of the gas-air mixture ionization.
  • FIGS. 2A and 2B show in a side and a profile view another embodiment of a cylinder burner. This differs from that in the Figures 1A and 1B shown gas burner characterized in that the separation 25 does not form a closed surface, but a homogeneous mixture passage area for the gas-air mixture.
  • the region 26 supplied gas-air mixture 12 flows through the partition 25 in the remaining region 27 of the mixture supply space.
  • the separation 25 causes a pressure drop, which is dependent on the mixture passage area. In the region 27 there is a pressure which is lower than the pressure in the region 26.
  • the mixture passage area of the separation can be changed by means of an exchangeable insert.
  • the pressure drop caused by the separation can be adapted to the burner output or to the burner type.
  • FIGS. 3A and 3B show in a side and profile view a flat burner. This one has the same as the one in the FIGS. 2A and 2B Cylinder burner shown a partition 25 with a homogeneous mixture passage area. On the mixture supply side, the region 26, the gas-air mixture 12 is supplied, which flows through the partition 25 in the remaining region 27 of the mixture supply space. The separation 25 causes a pressure drop, so that the pressure in the remaining area 27 is lower is the pressure in the region 26 associated with the ionization electrode.
  • the mixture supply space 26, 27 is closed by a mixture distributor 24, which has a homogeneous mixture passage area.
  • the mixture distributor 24 distributes the gas-air mixture 12 to a homogeneous burner surface 23, through which the gas-air mixture 12 flows into a combustion chamber 28, in which the gas-air mixture is ignited and burned.
  • the arranged in the flame region of the burner surface 23 ionization electrode 2 detects a dependent of the combustion of the gas-air mixture 12 ionization.
  • FIG. 4 shows in a diagram a waveform of the ionization current I as a function of the burner power P.
  • the Ionisationsstromsignal 21 obtained by the invention has over the strichlin convinced ionization signal 20 of the prior art increased over the entire power range of the burner 22 Signalhub, whereby the quality of the gas Air-composite control is improved.
  • FIG. 5 shows in a functional block diagram a gas-air composite control with a gas burner 1 according to the invention, an ionization electrode 2, which detects a combustion dependent ionization current, a signal processing circuit 3 which provides a controlled variable 14 for a control unit 4 in dependence on the ionization current signal 13.
  • a fan 6 is ambient air 8 and a gas valve 5, for example, a fuel gas 9 is supplied.
  • a mixer 7 mixes the air quantity 10 set by the blower 6 with the fuel gas amount 11 set by the gas valve 5 to form a gas-air mixture 12 which is supplied to the gas burner 1.
  • control unit 4 In a heat or power demand 15, 16, the control unit 4 generates the control signals 17, 18, whereby the amount of air or gas 10, 11 is set.
  • the control signal 17 controls e.g. the gas valve 5 and the control signal 18 controls the blower 6.
  • the signal 19 is optional and denotes a feedback of the amount of blower 10th

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
EP08166811A 2008-10-16 2008-10-16 Brûleur à gaz pour une régulation combinée gaz-air Withdrawn EP2177830A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08166811A EP2177830A1 (fr) 2008-10-16 2008-10-16 Brûleur à gaz pour une régulation combinée gaz-air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08166811A EP2177830A1 (fr) 2008-10-16 2008-10-16 Brûleur à gaz pour une régulation combinée gaz-air

Publications (1)

Publication Number Publication Date
EP2177830A1 true EP2177830A1 (fr) 2010-04-21

Family

ID=40549877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166811A Withdrawn EP2177830A1 (fr) 2008-10-16 2008-10-16 Brûleur à gaz pour une régulation combinée gaz-air

Country Status (1)

Country Link
EP (1) EP2177830A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3045816A1 (fr) * 2015-01-19 2016-07-20 Siemens Aktiengesellschaft Dispositif de réglage d'une installation de brûleur
DE202016105039U1 (de) * 2016-09-12 2017-09-14 Viessmann Werke Gmbh & Co Kg Gasbrenner
DE102017128802A1 (de) * 2017-12-05 2019-06-06 Vaillant Gmbh Vollvormischender Gasbrenner
WO2019158382A1 (fr) 2018-02-14 2019-08-22 Bekaert Combustion Technology B.V. Brûleur cylindrique à gaz de pré-mélange
EP3628923A1 (fr) 2018-09-25 2020-04-01 Polidoro S.p.A. Dispositif distributeur pour un brûleur prémélangeur et brûleur comprenant un tel distributeur
EP3628924A1 (fr) 2018-09-25 2020-04-01 Polidoro S.p.A. Dispositif de distributeur à coupe variable pour un brûleur prémélangeur et brûleur comprenant un tel distributeur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028909A (en) * 1956-09-14 1962-04-10 Faure & Cie Gas burners
DE8905014U1 (de) * 1988-04-28 1989-06-15 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Vorrichtung zur Überwachung des Betriebes der Brennerplatte eines Flächenbrenners
EP1036984A1 (fr) * 1999-03-18 2000-09-20 G. Kromschröder Aktiengesellschaft Brûleur à prémélange gazeux
DE102005056499A1 (de) * 2005-11-28 2007-05-31 Schott Ag Gasbrenner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028909A (en) * 1956-09-14 1962-04-10 Faure & Cie Gas burners
DE8905014U1 (de) * 1988-04-28 1989-06-15 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Vorrichtung zur Überwachung des Betriebes der Brennerplatte eines Flächenbrenners
EP1036984A1 (fr) * 1999-03-18 2000-09-20 G. Kromschröder Aktiengesellschaft Brûleur à prémélange gazeux
EP1036984B1 (fr) 1999-03-18 2004-02-18 G. Kromschröder Aktiengesellschaft Brûleur à prémélange gazeux
DE102005056499A1 (de) * 2005-11-28 2007-05-31 Schott Ag Gasbrenner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3045816A1 (fr) * 2015-01-19 2016-07-20 Siemens Aktiengesellschaft Dispositif de réglage d'une installation de brûleur
US10054309B2 (en) 2015-01-19 2018-08-21 Siemens Aktiengesellschaft Device for regulating a burner system
DE202016105039U1 (de) * 2016-09-12 2017-09-14 Viessmann Werke Gmbh & Co Kg Gasbrenner
DE102017128802A1 (de) * 2017-12-05 2019-06-06 Vaillant Gmbh Vollvormischender Gasbrenner
EP3495735A1 (fr) * 2017-12-05 2019-06-12 Vaillant GmbH Brûleur à gaz entièrement pré-mélangé
WO2019158382A1 (fr) 2018-02-14 2019-08-22 Bekaert Combustion Technology B.V. Brûleur cylindrique à gaz de pré-mélange
EP3628923A1 (fr) 2018-09-25 2020-04-01 Polidoro S.p.A. Dispositif distributeur pour un brûleur prémélangeur et brûleur comprenant un tel distributeur
EP3628924A1 (fr) 2018-09-25 2020-04-01 Polidoro S.p.A. Dispositif de distributeur à coupe variable pour un brûleur prémélangeur et brûleur comprenant un tel distributeur

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