WO2016091433A1 - Dispositif d'amenée de mélange combustible - Google Patents

Dispositif d'amenée de mélange combustible Download PDF

Info

Publication number
WO2016091433A1
WO2016091433A1 PCT/EP2015/073517 EP2015073517W WO2016091433A1 WO 2016091433 A1 WO2016091433 A1 WO 2016091433A1 EP 2015073517 W EP2015073517 W EP 2015073517W WO 2016091433 A1 WO2016091433 A1 WO 2016091433A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
automatic valve
flow
volume flow
change
Prior art date
Application number
PCT/EP2015/073517
Other languages
German (de)
English (en)
Inventor
Robbert DE BRUIN
Remko Voordendag
Gordy Koellmann
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2016091433A1 publication Critical patent/WO2016091433A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/007—Regulating fuel supply using mechanical 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
    • F23D14/60—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

Definitions

  • the invention relates to a Brennstoffgemischzu GmbH according to the preamble of patent claim 1.
  • the invention is based on a Brennstoffgemischzu 1500voriques, which is intended to adjust a fuel-air ratio of a fuel mixture, with at least one automatic valve, which is intended to a
  • Flow unit which is intended to change the fuel flow rate through the automatic valve in response to a combustion air flow rate.
  • a device for use within a burner system in particular a gas burner system
  • the fuel mixture supply device within a burner system is connected upstream of a burner, in particular a gas burner, in particular in terms of flow.
  • the Brennstoffgemischzu 1500voriques one or more
  • Hollow pipes, in particular pipes comprise, which are provided in particular for transporting a fuel, preferably a gaseous fuel, and / or a combustion air and / or a fuel mixture in the direction of the burner.
  • a fuel preferably a gaseous fuel, and / or a combustion air and / or a fuel mixture in the direction of the burner.
  • the term "provided” should be understood to mean specially programmed, designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or operating state
  • a "fuel” in this context is preferably a hydrocarbon-containing gas or gas mixture, preferably a natural gas or a natural gas mixture, in particular a natural gas, a
  • a fuel mixture is to be understood as meaning, in particular, an ignitable mixture of a fuel and a combustion air which is intended to be supplied to a burner for carrying out a combustion process Fuel mixture at least partially and preferably completely within the Brennstoffgemischzu 1500voriques.
  • a "fuel-air ratio” is to be understood in this context, in particular a ratio of fuel to combustion air within the fuel mixture.
  • An "automatic valve” is to be understood in this context, in particular a control valve, which is intended to at least one
  • Operating state in particular a volume flow of a flowing into the automatic valve and / or the automatic valve by flowing, in particular gaseous, fuel at least semi-automatically or preferably fully automatically adjust and / or to regulate.
  • the at least one automatic valve has at least one throttle element whose position and / or orientation and / or shaping can be actively changed, in particular as a function of at least one controlled variable. In particular, by changing the
  • At least one automatic valve Position and / or the orientation and / or the shaping of the at least one Throttle element at least one flow path, along which the at least one automatic valve can be flowed through by a fuel, expandable and / or narrowed. Under that, that at least one automatic valve "a
  • Fuel volume flow setting as a function of at least one combustion characteristic is to be understood in this context, in particular, that the at least one flow path along which the at least one automatic valve is flowed through by a fuel is expanded or narrowed according to a currently present combustion characteristic.
  • the at least one automatic valve has, in particular, a control and / or regulating unit and / or is connected to a control and / or regulating unit, which is provided to evaluate the at least one combustion characteristic and into one of the position and / or orientation and / or shaping the at least one throttle element of the at least one automatic valve in accordance with the combustion characteristic value changing control and / or control signal to transfer.
  • combustion characteristic value should be understood to mean, in particular, a parameter which contains at least information about a quality of a combustion process, in particular about a quality of a combustion process within a burner, preferably within a gas burner
  • Contain information which reflects a composition of a fuel gas mixture supplied to the burner, preferably a fuel-air ratio of the fuel gas mixture.
  • a detection of the at least one combustion characteristic value can in particular be effected by means of at least one sensor in an exhaust gas stream of the combustion process and / or preferably by means of at least one sensor in one
  • the at least one combustion characteristic value can be embodied in particular as an oxygen content and / or a carbon dioxide content and / or a carbon monoxide content of a combustion exhaust gas and / or preferably as an ionization flow detected in a burner flame.
  • the at least one combustion characteristic value can be detected by means of an oxygen sensor and / or a carbon dioxide sensor and / or a carbon monoxide sensor in an exhaust gas stream of the combustion process and / or preferably by means of an ionization electrode within a combustion flame of the combustion process.
  • the at least one combustion characteristic value is in particular different from a combustion air volume flow.
  • a detection of the at least one combustion characteristic may in particular re in, in particular fixed, time intervals and / or preferably carried out continuously.
  • a "flow unit” should be understood as meaning in particular a unit downstream of the automatic valve which has at least one mixing element which is provided to mix a fuel volume flow leaving the automatic valve with a combustion air volume flow with the at least one mixing element fluidly connected fuel supply line, at least one fluidly connected to the at least one mixing element
  • Combustion air supply line and at least one fluidically connected to the at least one mixing element fuel mixture derivative are to be understood in this context as meaning that the flow unit changes when a combustion air volume flow through the flow unit, in particular through the at least one mixing element of the flow unit, By such a configuration, a generic
  • a fuel volume flow can advantageously be set both as a function of a combustion characteristic value and also changed as a function of a combustion air volume flow.
  • a fuel-air ratio of a fuel mixture can be advantageously adjusted simply and / or reliably both with a changing fuel composition and with a changing combustion-air volume flow.
  • the flow unit is provided to change the fuel flow through the automatic valve, regardless of a setting of the automatic valve. Under that "the flow unit the
  • Fuel volume flow through the automatic valve regardless of a setting of the automatic valve changes "is to be understood in this context in particular that caused by the flow unit change in the fuel volume flow through the automatic valve in particular at an unchanged valve position of the automatic valve takes place.
  • a change by means of the flow unit can advantageously be decoupled from a change in the fuel volume flow by means of the automatic valve.
  • a change in the fuel volume flow by means of the flow unit can take place independently of the at least one combustion characteristic value, as a result of which a dead-time-loaded feedback path can be advantageously avoided.
  • the flow unit is provided to change the fuel volume flow through the automatic valve at least substantially in proportion to a change in the combustion air volume flow.
  • at least essentially is to be understood in this context in particular that a deviation from a predetermined value in particular less than 20%, preferably less than 10% and more preferably less than 5% of the predetermined value deviates - ratio of one
  • Fuel mixture are kept at least largely constant at a change in the combustion air flow rate.
  • the flow unit is provided to lower a pressure at an outlet opening of the at least one automatic valve with an increase in the combustion air volume flow and / or the pressure at the outlet opening of the at least automatic valve with a decrease in the
  • the flow unit has at least one Venturi pump and / or at least one reduction, which is intended to provide a pressure at the
  • a pump which consists of at least one particular smooth-walled pipe having a constriction of its cross section.
  • the narrowing of the cross section may be formed for example by two oppositely directed cones, which are united at the location of their smallest diameter.
  • the venturi pump has at least one take-off line which opens into the pipeline at least substantially at the point of the constriction and runs at the confluence at least essentially to a main through-flow direction of the pipeline.
  • the take-off line fluidly connects an outlet opening of the at least one automatic valve with the at least one venturi pump.
  • Venturi pump at least partially forms the mixing element of the flow unit.
  • the combustion air volume flow flows in particular the combustion air volume flow.
  • a supply of the fuel volume flow takes place via the at least one take-off line.
  • a mixing of the fuel volume flow with the combustion air volume flow takes place within the Venturi pump.
  • a “reduction” should be understood to mean, in particular, an element which is intended to narrow a cross-section of the combustion air supply line in at least one point in a flow direction, at least one take-off line, which fluidly connects an outlet opening of the at least one automatic valve with the combustion air supply line
  • the use of a Venturi pump and / or a reduction can in a simple and / or reliable manner change a pressure at an outlet opening of the at least one automatic valve, in particular as a function of the combustion air volume flow , be achieved.
  • the flow unit is provided to the fuel flow through the automatic valve at an occurrence of
  • a dead time between a change in the combustion air volume flow and a change in the fuel volume flow through the automatic valve is a maximum of 5 seconds, preferably a maximum of 3 seconds, advantageously a maximum of 1 second and especially is advantageously not more than 0.5 seconds.
  • special sudden change in the combustion air flow rate can be reacted, whereby a change in the fuel-air ratio can be at least largely prevented.
  • the automatic valve is designed as an electronic control valve.
  • an "electronic control valve” should be understood to mean, in particular, a valve whose valve position can be changed, in particular by means of electrical signals.
  • a fuel-air ratio of a fuel mixture can advantageously be adjusted simply and / or quickly and / or reliably.
  • fluctuations in the fuel / air ratio can be advantageously reduced, in particular due to fluctuations in a fuel composition and / or a combustion air volume flow.
  • the fuel mixture supply device according to the invention should not be limited to the application and embodiment described above.
  • the fuel mixture supply device according to the invention may have a number deviating from a number of individual elements, components and units mentioned herein.
  • FIG. 1 shows a burner system 28 embodied as a gas burner system.
  • the burner system 28 comprises a burner 30 and a fuel mixture supply device 10 upstream of the burner 30.
  • a gaseous fuel 38 for example a natural gas, is fed to the burner system 28 via a fuel feed line 34.
  • a combustion air 40 is supplied to the burner system 28 via a combustion air supply line 36.
  • the fuel 38 and the combustion air 40 are mixed to form an ignitable fuel mixture 18 and fed to the burner 30.
  • the fuel mixture 18 is fed by means of an electric blower 42 connected upstream of the burner 30.
  • the fuel mixture feed device 10 is provided to set a fuel / air ratio of the fuel mixture 18 supplied to the burner 30. The during the combustion process in the
  • Burner 30 resulting combustion gases 48 are discharged via an exhaust pipe 50.
  • the fuel mixture supply device 10 initially has an automatic valve 12 for adjusting the fuel-air ratio of the fuel mixture 18.
  • Automatic valve 12 is here a shut-off valve 54 upstream.
  • the automatic valve 12 is disposed in the fuel supply line 34.
  • the automatic valve 12 is preferably designed as an electronic control valve 26.
  • the automatic valve 12 is provided to set a fuel volume flow 14 as a function of a combustion characteristic.
  • the combustion characteristic value is formed here by way of example as an ionization stream, which is detected by means of an ionization electrode 44 in a combustion flame 46 of the burner 30. Alternatively or additionally, it would also be conceivable to detect an oxygen content and / or a carbon dioxide content of a combustion exhaust gas 48 and to use it as a combustion characteristic value.
  • the combustion characteristic value contains, in particular, information which makes it possible to draw conclusions about a composition of the fuel mixture 18.
  • the combustion characteristic value makes it possible to draw conclusions about a fuel-air ratio of the fuel mixture 18.
  • a signal for activating the automatic valve 12 is generated and the fuel volume flow 14 is set by the automatic valve 12 as a function of the combustion characteristic value. For example, it is possible to react so reliably to a changed composition of the fuel 38 used.
  • the disadvantage of setting the fuel volume flow 14 to a non-negligible dead time arises between the detection of a change in the combustion characteristic and an effect of a resulting change in the fuel flow rate 14. Due to the dead time can by means of the automatic valve
  • the Brennstoffgemischzu Geneva State 12voriques 10 further comprises a flow unit 16.
  • the flow unit 16 is provided to change the fuel volume flow 14 through the automatic valve 12 as a function of the combustion air volume flow 20.
  • the flow unit 16 has a venturi pump 24.
  • the venturi pump 24 is arranged in the combustion air supply line 36. Via a take-off line 52, the venturi pump 24 is connected to an outlet opening 22 of the automatic valve 12.
  • the fuel 38 is mixed with the combustion air 40 to the fuel mixture 18.
  • the combustion air volume flow 20 is through the
  • Venturi pump 24 passed.
  • a change in the combustion air volume flow 20 causes a dependent on the change in the combustion air volume flow 20
  • the flow unit 16 is designed such that a change in the combustion air volume flow 20 in a proportional thereto change in the fuel flow rate 14 results.
  • the change of the fuel volume flow 14 takes place independently of a setting of the automatic valve 12.
  • the change of the fuel volume flow 14 by means of the flow unit 16 does not require activation of the automatic valve 12 and / or detection and / or evaluation of the combustion characteristic value.
  • this requires that by means of the flow unit 16, for example, no adjustment of the fuel flow 14 to a modified fuel composition is possible.
  • this disadvantage is compensated by the use of the automatic valve 12.
  • the structure of the flow unit 16 further enables When there is a change in the combustion air volume flow 20, the fuel volume flow 14 can be adapted to the changed combustion air volume flow 20 without delay. This makes it possible for a fuel-air mixture of the fuel mixture 18 to be kept constant even in the event of a sudden change in the combustion air volume flow 20.
  • a sudden change in the combustion air volume flow 20 can be caused, for example, by a suction induced by a wind 56 on the exhaust pipe 50 and / or by a wind attack on the combustion air supply line 36 and / or by a, for example by a burner control 58 initiated speed change of the blower 42 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

L'invention concerne un dispositif d'amenée de mélange combustible qui est conçu pour régler un rapport combustible/air d'un mélange combustible (18), comprenant au moins une vanne automatique (12) qui est conçue pour régler un débit volumique de combustible (14) en fonction d'au moins une valeur caractéristique de combustion. Selon l'invention, le dispositif d'amenée de mélange combustible possède une unité d'écoulement (16) qui est conçue pour modifier le débit volumique de combustible (14) à travers la vanne automatique (12) en fonction d'un débit volumique d'air de combustion (20).
PCT/EP2015/073517 2014-12-09 2015-10-12 Dispositif d'amenée de mélange combustible WO2016091433A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014225226.1 2014-12-09
DE102014225226.1A DE102014225226A1 (de) 2014-12-09 2014-12-09 Brennstoffgemischzuführvorrichtung

Publications (1)

Publication Number Publication Date
WO2016091433A1 true WO2016091433A1 (fr) 2016-06-16

Family

ID=54365195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/073517 WO2016091433A1 (fr) 2014-12-09 2015-10-12 Dispositif d'amenée de mélange combustible

Country Status (2)

Country Link
DE (1) DE102014225226A1 (fr)
WO (1) WO2016091433A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018215527A1 (fr) * 2017-05-24 2018-11-29 Bosch Termotecnologia S.A. Système d'appareil de chauffage et procédé permettant de faire fonctionner un système d'appareil de chauffage
DE102017222437A1 (de) * 2017-12-12 2019-06-13 Robert Bosch Gmbh Heizgerätkomponente und Verfahren zur Einstellung eines Brennstoffvolumenstroms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130224670A1 (en) * 2010-07-12 2013-08-29 Gas Point S.R.L. Premix gas burner
CN103615798A (zh) * 2013-11-04 2014-03-05 广东万和新电气股份有限公司 全预混燃烧燃气采暖热水炉

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130224670A1 (en) * 2010-07-12 2013-08-29 Gas Point S.R.L. Premix gas burner
CN103615798A (zh) * 2013-11-04 2014-03-05 广东万和新电气股份有限公司 全预混燃烧燃气采暖热水炉

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018215527A1 (fr) * 2017-05-24 2018-11-29 Bosch Termotecnologia S.A. Système d'appareil de chauffage et procédé permettant de faire fonctionner un système d'appareil de chauffage
DE102017222437A1 (de) * 2017-12-12 2019-06-13 Robert Bosch Gmbh Heizgerätkomponente und Verfahren zur Einstellung eines Brennstoffvolumenstroms

Also Published As

Publication number Publication date
DE102014225226A1 (de) 2016-06-09

Similar Documents

Publication Publication Date Title
EP1621811A1 (fr) Procédé de fonctionnement pour un dispositif de combustion
WO2003062618A1 (fr) Procede d'utilisation d'un groupe de turbines a gaz
DE2219073B2 (de) Einrichtung zur regelung einer anlage mit einer brennkraftmaschine, deren abgase durch einen katalytischen konverter geleitet werden
DE102005054733A1 (de) Brenner zur Katalysatoraufheizung mit gesteuerter oder geregelter Kraftstoffzuführung
EP3596391B1 (fr) Procédé de régulation d'un appareil de chauffage fonctionnant avec du gaz combustible
WO2012139801A1 (fr) Dispositif et procédé de chauffage des gaz d'échappement d'un moteur à combustion interne
EP2428732B1 (fr) Procédé de calibrage d'une régulation de brûleur à gaz
WO2016091433A1 (fr) Dispositif d'amenée de mélange combustible
DE102013220950A1 (de) Heizgerät mit einem von einem Gebläse unterstützten Brenner
DE3739805C3 (de) Vorrichtung zum Regeln der Drehzahl einer Brennkraftmaschine
EP3499124A1 (fr) Composant d'appareil de chauffage et procédé de réglage d'un débit volumétrique de carburant
WO2008036993A2 (fr) Procédé et dispositif pour alimenter un moteur à combustion interne en gaz de combusion conditionné
DE7027378U (de) Luftventilvergaser mit temperaturkontrollierter gemischzufuehrung fuer brennkraftmaschinen.
WO2004076925A2 (fr) Mode de fonctionnement d'une turbine a gaz
DE2018187A1 (de) Verfahren und Einrichtung zur Vermeidung des Flammenruckschlags in einem Brennersystem
WO2020030323A1 (fr) Procédé pour la régulation d'un rapport de mélange de gaz combustible et d'air pour un appareil de chauffage
WO2011110439A2 (fr) Ensemble pneumatique avec équilibre de masse
EP3260777A1 (fr) Procede de detection d'un blocage d'une evacuation des gaz d'echappement d'un systeme de bruleur et systeme de bruleur
DE10200128A1 (de) Verfahren zur Erkennung von Gasarten und Verfahren zum Betrieb einer Brennvorrichtung sowie Brennvorrichtung für die Durchführung dieser Verfahren
DE3607386A1 (de) Verfahren und vorrichtung zur gas-luft-mengenregelung fuer gasgeblaesebrenner
DE1112025B (de) Vorrichtung zum Konstanthalten der Zusammensetzung einer Mischung von Luft und brennbarem Gas
EP2530291B1 (fr) Procédé de fonctionnement de moteurs à gaz dotés d'un gaz pauvre contenant du CH4 et dispositif de mélange destiné à l'exécution du procédé
DE102009037890B4 (de) Vorrichtung zum Einstellen eines Ausgangsdrucks eines Brenngasvolumenstromes, Verfahren zum Einstellen eines Ausgangsdrucks sowie Verwendung der Vorrichtung in einer Brenngas-Luft-Mischeinrichtung für ein Verbrennungssystem
DE102013203741B4 (de) Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung
DE102017217248A1 (de) Brennstoff-Luft-Mischeinrichtung und ein Heizgerät

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15787908

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15787908

Country of ref document: EP

Kind code of ref document: A1