EP3978805A1 - Procédé de fonctionnement d'un dispositif de combustion, dispositif de combustion, ainsi qu'appareil de chauffage - Google Patents

Procédé de fonctionnement d'un dispositif de combustion, dispositif de combustion, ainsi qu'appareil de chauffage Download PDF

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Publication number
EP3978805A1
EP3978805A1 EP21199318.3A EP21199318A EP3978805A1 EP 3978805 A1 EP3978805 A1 EP 3978805A1 EP 21199318 A EP21199318 A EP 21199318A EP 3978805 A1 EP3978805 A1 EP 3978805A1
Authority
EP
European Patent Office
Prior art keywords
air
fuel gas
flow
ratio
combustion
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
EP21199318.3A
Other languages
German (de)
English (en)
Other versions
EP3978805B1 (fr
Inventor
Tom Collins
Timi Odumosu
Simon Dunne
Samuel English
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.)
Bosch Thermotechnology Ltd
Original Assignee
Bosch Thermotechnology Ltd
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 Bosch Thermotechnology Ltd filed Critical Bosch Thermotechnology Ltd
Publication of EP3978805A1 publication Critical patent/EP3978805A1/fr
Application granted granted Critical
Publication of EP3978805B1 publication Critical patent/EP3978805B1/fr
Active 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
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • 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
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • 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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed

Definitions

  • the invention also relates to a method for operating a combustion device to provide an air/fuel gas mixture flow from an air flow and a fuel gas flow, in particular a hydrogen flow, with at least one predeterminable air ratio ⁇ in the mixture flow, and for the combustion of the mixture flow, with a heat output being generated by the combustion.
  • the mixture flow has a definable air/fuel gas ratio or an air ratio ⁇ .
  • An air/fuel gas ratio is to be understood here as a quantity ratio of air to fuel gas.
  • the fact that the air/fuel gas ratio can be predetermined means in particular that the quantity ratio can be adjusted.
  • the mixture flow is ignited in the combustion device and burned to form a flame.
  • the combustion device comprises a burner mouth or burner surface, which acts as a flame holder: here the flame is intended to burn in a spatially stable manner.
  • the energy (heat) released during combustion per unit of time is determined by the size of the mixture flow that is burned, in particular the size of the fuel flow that is burned.
  • the energy released per unit of time characterizes the heat output of the combustion device.
  • the air conveying unit is controlled in particular by an electrical signal.
  • the air flow can be conveyed in particular as a function of a power requirement, for example a heating power requirement or a temperature requirement, to the combustion device and/or the heater.
  • a size of the conveyed air volume flow in Depending on a size of a requested heating output.
  • a required heating output is understood to mean, in particular, a theoretically required heating output that is used to meet a user's need for space heating and/or domestic hot water preparation.
  • an actual heating output is a measurable quantity that correlates with the quantity of the mixture flow that is used for combustion.
  • a network means in particular that a target value of a first variable, for example the air flow, for example using an electrical signal, is specified, and that a target value of a subsequent variable, for example the fuel gas flow, for example using an electrical or a pressure signal, in the compound, adapted to the resulting actual value of the first variable is tracked.
  • a variable combination means that the target value of the following variable is not only adapted to the actual value of the first variable, but that this adaptation is also varied as a function of a third variable, here the heating output.
  • the value of the air/fuel gas ratio is controlled, so that a heat output-dependent air/fuel gas ratio is set.
  • the fact that the air/fuel gas ratio is varied as a function of the heating output means that the size of the heating output at least partly determines the value of the air/fuel gas ratio.
  • the invention provides a method for operating a combustion device that is improved over the known prior art.
  • Air/fuel gas mixture flows with an air ratio ⁇ from the value range mentioned above are particularly advantageous to burn.
  • air-hydrogen mixture streams with an air ratio ⁇ from the value range mentioned above can be burned particularly advantageously.
  • the combustion of such an air-fuel gas mixture flow is characterized by reliable ignition, high flame stability (avoidance of rising flames and flashback), optimal thermal efficiency, complete combustion with low pollutant values, low noise and compatibility with commercially available pneumatic air-gas ratio controls.
  • the fuel gas metering unit can be regulated in particular by means of an electrical signal or a pressure signal which is output by the control device to the fuel gas metering unit.
  • a relatively smaller (or larger) fuel gas flow expresses the fact that the reduction (or increase) in the metering of the fuel gas flow with a smaller (or larger) heating output is not proportional, but disproportionate, so that the air/ Fuel gas ratio and the air ratio ⁇ increases with a lower heating output and decreases with a higher heating output.
  • a further advantageous embodiment of the invention is characterized in that the control device receives and processes a power signal characterizing the heating output, the power signal being based on a detection of an actual or requested heating output, the mixture flow, the fuel gas flow, the air flow, a fan speed of an air fan promoting the air flow and/or a combustion temperature of the combustion of the air/fuel gas mixture flow, the control device generating the mixture signal on the basis of the power signal.
  • the values of the lower air ratio limit curve ⁇ -min and the upper air ratio limit curve ⁇ -max depend on the heating output value.
  • Q stands for the value of the relative heating power of the combustion device 100.
  • the fuel gas metering unit 104 and at least parts of the control device 110 figure 1 can be formed in particular by a pneumatic air/fuel gas ratio regulator 112 .
  • a pneumatic air/combustion gas ratio controller 112 can be understood in particular as a fitting made up of a control device 110 and a combustible gas metering unit 104 combined to form a structural unit.
  • the air/fuel gas ratio controller 112 receives a power signal S21 describing an air flow A, for example an air pressure signal, translates this into a mixture signal S3, for example an actuating signal for a fuel gas pressure, opens the gas valve in particular for setting a fuel gas pressure in correlation to the air pressure, and meters a Fuel gas flow G corresponding to air flow A.
  • the aforementioned correlation is defined by adjustments made to the air/fuel gas ratio controller 112 (e.g. an offset adjustment to the ratio, in particular difference, of fuel gas pressure and air pressure).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
EP21199318.3A 2020-10-01 2021-09-28 Dispositif de combustion avec dispositif de réglage du rapport air/air, ainsi qu'appareil de chauffage Active EP3978805B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2015572.7A GB2599423A (en) 2020-10-01 2020-10-01 Method for operating a combustion device, combustion device and heater

Publications (2)

Publication Number Publication Date
EP3978805A1 true EP3978805A1 (fr) 2022-04-06
EP3978805B1 EP3978805B1 (fr) 2023-12-27

Family

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Family Applications (1)

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EP21199318.3A Active EP3978805B1 (fr) 2020-10-01 2021-09-28 Dispositif de combustion avec dispositif de réglage du rapport air/air, ainsi qu'appareil de chauffage

Country Status (2)

Country Link
EP (1) EP3978805B1 (fr)
GB (1) GB2599423A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023247692A1 (fr) 2022-06-22 2023-12-28 Bdr Thermea Group B.V. Ensemble kit de rétro-installation
EP4306850A1 (fr) * 2022-07-15 2024-01-17 BDR Thermea Group B.V. Mécanisme de commande pour chaudière à gaz
EP4317778A1 (fr) * 2022-08-01 2024-02-07 BDR Thermea Group B.V. Ensemble kit de rattrapage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1522790A2 (fr) * 2003-10-08 2005-04-13 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
EP3182007A1 (fr) * 2015-12-18 2017-06-21 Robert Bosch Gmbh Système d'appareil de chauffage et procédé faisant appel à un système d'appareil de chauffage
WO2020182902A1 (fr) * 2019-03-12 2020-09-17 Bekaert Combustion Technology B.V. Procédé d'actionnement de brûleur de modulation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2824472C3 (de) * 1978-06-03 1981-08-06 Volkswagenwerk Ag, 3180 Wolfsburg Verfahren und Anordnung zum Betrieb einer Brennkraftmaschine mit Fremdzündung
US8544445B2 (en) * 2010-03-09 2013-10-01 Pinnacle Engines, Inc. Over-compressed engine
US10738704B2 (en) * 2016-10-03 2020-08-11 Raytheon Technologies Corporation Pilot/main fuel shifting in an axial staged combustor for a gas turbine engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1522790A2 (fr) * 2003-10-08 2005-04-13 Vaillant GmbH Procédé de régulation d'un brûleur à gaz, en particulier dans des installations de chauffe avec ventilateur
EP3182007A1 (fr) * 2015-12-18 2017-06-21 Robert Bosch Gmbh Système d'appareil de chauffage et procédé faisant appel à un système d'appareil de chauffage
WO2020182902A1 (fr) * 2019-03-12 2020-09-17 Bekaert Combustion Technology B.V. Procédé d'actionnement de brûleur de modulation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023247692A1 (fr) 2022-06-22 2023-12-28 Bdr Thermea Group B.V. Ensemble kit de rétro-installation
WO2023247689A1 (fr) 2022-06-22 2023-12-28 Bdr Thermea Group B.V. Ensemble kit de rétro-installation
WO2023247690A1 (fr) 2022-06-22 2023-12-28 Bdr Thermea Group B.V. Ensemble kit de rattrapage
WO2023247691A1 (fr) 2022-06-22 2023-12-28 Bdr Thermea Group B.V. Ensemble kit de rétro-installation
EP4306850A1 (fr) * 2022-07-15 2024-01-17 BDR Thermea Group B.V. Mécanisme de commande pour chaudière à gaz
WO2024012837A1 (fr) * 2022-07-15 2024-01-18 Bdr Thermea Group B.V. Procédé de commande pour chaudière à gaz
EP4317778A1 (fr) * 2022-08-01 2024-02-07 BDR Thermea Group B.V. Ensemble kit de rattrapage

Also Published As

Publication number Publication date
GB2599423A (en) 2022-04-06
EP3978805B1 (fr) 2023-12-27
GB202015572D0 (en) 2020-11-18

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