EP4242518A1 - Dispositif et procédé de commande d'un mélange combustible-oxydant dans un brûleur à gaz à prémélange - Google Patents

Dispositif et procédé de commande d'un mélange combustible-oxydant dans un brûleur à gaz à prémélange Download PDF

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Publication number
EP4242518A1
EP4242518A1 EP23160666.6A EP23160666A EP4242518A1 EP 4242518 A1 EP4242518 A1 EP 4242518A1 EP 23160666 A EP23160666 A EP 23160666A EP 4242518 A1 EP4242518 A1 EP 4242518A1
Authority
EP
European Patent Office
Prior art keywords
fuel
flame
type
signal
data
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.)
Pending
Application number
EP23160666.6A
Other languages
German (de)
English (en)
Inventor
Pierluigi Bertelli
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.)
Bertelli and Partners SRL
Original Assignee
Bertelli and Partners SRL
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 Bertelli and Partners SRL filed Critical Bertelli and Partners SRL
Publication of EP4242518A1 publication Critical patent/EP4242518A1/fr
Pending legal-status Critical Current

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    • 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
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
    • 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
    • F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
    • 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
    • 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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • 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
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements 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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/085—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electrical or electromechanical means
    • 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
    • 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
    • F23N5/126—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 electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/187—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/02—Multiplex transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/50—Human control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/12—Flame sensors with flame rectification current detecting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/14—Flame sensors using two or more different types of flame sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/16—Flame sensors using two or more of the same types of flame sensor
    • 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
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/04—Gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means

Definitions

  • the first regulation data allow generating the drive signals (at least) from the flame signal in the case where the fuel is of the first type
  • the second regulation data allow generating the drive signals (at least) from the flame signal in the case where the fuel is of the second type.
  • the processor derives the type of fuel from the fuel data and, based on the type of fuel, selects the first or the second regulation data.
  • the device comprises a fan, rotating at a variable rotation speed and located in the intake duct to generate therein a flow of oxidizer in a direction of inflow oriented from the inlet to the delivery outlet.
  • the device comprises a first flame sensor, configured to detect a first flame signal, representing the presence of a flame deriving from the combustion of a first type of fuel inside a combustion cell of the burner.
  • the device comprises a control unit, including a processor programmed to receive a flame signal.
  • the processor is programmed to generate drive signals, representing a position of the gas regulating valve and/or the rotation speed of the suction fan, based on the flame signal.
  • the device comprises a second flame sensor, configured to detect a second flame signal, representing the presence of a flame deriving from the combustion of a second type of fuel inside a combustion cell of the burner.
  • the processor is programmed to access a memory unit containing first regulation data and second regulation data, different from the first regulation data.
  • the processor is also programmed to generate the drive signals based on the first regulation data or, alternatively, on the second regulation data, depending on the fuel data.
  • the device comprises a user interface, connected to the control unit. The user interface is configured to allow a user to enter the fuel data manually.
  • this disclosure provides a premix gas burner including a combustion head into which the premixed gas is delivered for combustion, and a control device according to one or more of the features described herein with reference to the control device.
  • the first flame signal indicates the possible presence of hydrogen but not the certainty of its presence, since other fuels (for example, fuels of the second type) which, when burnt, are detectable by UV detection.
  • the processor receives F3" fuel data 403, representing the fact that the fuel used belongs to the first type, to the second type or is a mixture of the first and the second type.
  • the device comprises a memory unit containing first regulation data R1 representing regulation data of the burner in the presence of fuel of the first type, and second regulation data R2 representing regulation data of the burner in the presence of fuel of the second type. More generally speaking, the memory unit includes a plurality of regulation data groups R, each of which is associated with a respective type (composition) of the fuel being used.
  • the processor is programmed to generate the drive signals 501 based on the regulation data selected and based on the first and/or the second flame signal 401, 402.
  • the processor receives both the first and the second flame signal 401, 402
  • the processor is programmed to automatically receive F3' the fuel data 403.
  • the intensity of the first flame signal (that is, the intensity of the UV signal) is associated with the quantity of hydrogen used in the combustion head TC.
  • the intensity of the second flame signal (that is, the intensity of the continuous ionization or flame impedance signal) is associated with the quantity of fossil fuels used in the combustion head TC.
  • the flow sensor 43 is configurable on the basis of the fuel data 403. More specifically, the flow sensor 43 is configurable in such a way as to select a working curve that is more suitable for the fuel to be measured.
  • the flow sensor 43 or the flow sensor 43" located on the intake duct, may be mounted in different configurations, for example, but not limited to the following: upstream of the fan 9, downstream of the fan 9, upstream of the mixing zone 202 or downstream of the mixing zone 202.
  • the monitoring device 4 comprises a temperature sensor 44.
  • the temperature sensor 44 is located in the combustion head TC and is configured to detect a temperature signal 441, representing a temperature inside the combustion head TC. In an embodiment, there may be more than one temperature sensor 44 to form a plurality of temperature sensors 44.
  • the processor receives the temperature signal and calculates the flow rate (the quantity) of the fuel of the first type and/or of the second type in the combustion head (that is, the real ratio between fuel and oxidizer) based on the temperature signal 441.
  • the device comprises a gas detection sensor, configured to measure the presence and/or the quantity of gas (preferably hydrogen) present inside the burner or in an outside space adjacent thereto.
  • gas detection sensor configured to measure the presence and/or the quantity of gas (preferably hydrogen) present inside the burner or in an outside space adjacent thereto.
  • the processor has access to experimental data including, amongst other things, the ignition flow rate ranges for the first type of fuel and the second type of fuel (or a mixture thereof) and, for each ignition flow rate range, a respective expected flame signal (first flame signal 401 or second flame signal 402) and expected fuel flow rate.
  • the method comprises supplying a progressive flow of fuel and interrupting the progression once the presence of the flame is detected (via the first flame signal 401 or the second flame signal 402).
  • the flow sensor 43 can be reconfigured in such a way as to select a working curve more suitable for the fluid to be measured (typically, in this specific case, for the oxidizer), hence keeping accuracy and resolution at the maximum allowed by the instrument, for improved adjustment quality and working/modulation range (defined as the ratio between the maximum and the minimum flow rate of the appliance).
  • the configurability of the flow sensor 43 might not be automatic (via a self-learning boiler control) but determined by factory setting or set during installation.

Landscapes

  • 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)
EP23160666.6A 2022-03-08 2023-03-08 Dispositif et procédé de commande d'un mélange combustible-oxydant dans un brûleur à gaz à prémélange Pending EP4242518A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202200004406 2022-03-08

Publications (1)

Publication Number Publication Date
EP4242518A1 true EP4242518A1 (fr) 2023-09-13

Family

ID=81850924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23160666.6A Pending EP4242518A1 (fr) 2022-03-08 2023-03-08 Dispositif et procédé de commande d'un mélange combustible-oxydant dans un brûleur à gaz à prémélange

Country Status (4)

Country Link
US (1) US20230288063A1 (fr)
EP (1) EP4242518A1 (fr)
CN (1) CN116734286A (fr)
CA (1) CA3192036A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301775A1 (fr) 1975-02-24 1976-09-17 Elecam Snc C Amadasi Et L Cont Systeme electronique de controle pour bruleurs, avec detecteur de flamme du type a ionisation
US6135760A (en) * 1996-06-19 2000-10-24 Meggitt Avionics, Inc. Method and apparatus for characterizing a combustion flame
WO2004053900A2 (fr) 2002-12-09 2004-06-24 Ametek, Inc. Capteur de flamme pilote
WO2009110015A1 (fr) 2008-03-07 2009-09-11 Bertelli & Partners S.R.L. Procédé et dispositif perfectionnés pour détecter la flamme dans un brûleur fonctionnant avec un combustible solide, liquide ou gazeux
US20150011009A1 (en) 2013-07-03 2015-01-08 Karl Dungs Gmbh & Co. Kg Method and Apparatus For Determining A Calorific Value Parameter, As Well As A Gas-Powered System Comprising Such An Apparatus
EP3663648A1 (fr) 2018-12-05 2020-06-10 Vaillant GmbH Procédé et dispositif de régulation du rapport de mélange de l'air de combustion et de gaz de combustion dans un processus de combustion

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301775A1 (fr) 1975-02-24 1976-09-17 Elecam Snc C Amadasi Et L Cont Systeme electronique de controle pour bruleurs, avec detecteur de flamme du type a ionisation
US6135760A (en) * 1996-06-19 2000-10-24 Meggitt Avionics, Inc. Method and apparatus for characterizing a combustion flame
WO2004053900A2 (fr) 2002-12-09 2004-06-24 Ametek, Inc. Capteur de flamme pilote
WO2009110015A1 (fr) 2008-03-07 2009-09-11 Bertelli & Partners S.R.L. Procédé et dispositif perfectionnés pour détecter la flamme dans un brûleur fonctionnant avec un combustible solide, liquide ou gazeux
US20150011009A1 (en) 2013-07-03 2015-01-08 Karl Dungs Gmbh & Co. Kg Method and Apparatus For Determining A Calorific Value Parameter, As Well As A Gas-Powered System Comprising Such An Apparatus
EP3663648A1 (fr) 2018-12-05 2020-06-10 Vaillant GmbH Procédé et dispositif de régulation du rapport de mélange de l'air de combustion et de gaz de combustion dans un processus de combustion

Also Published As

Publication number Publication date
CN116734286A (zh) 2023-09-12
CA3192036A1 (fr) 2023-09-08
US20230288063A1 (en) 2023-09-14

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