[go: up one dir, main page]

EP2386797A2 - Brûleur à gaz pour un appareil de chauffage - Google Patents

Brûleur à gaz pour un appareil de chauffage Download PDF

Info

Publication number
EP2386797A2
EP2386797A2 EP11165612A EP11165612A EP2386797A2 EP 2386797 A2 EP2386797 A2 EP 2386797A2 EP 11165612 A EP11165612 A EP 11165612A EP 11165612 A EP11165612 A EP 11165612A EP 2386797 A2 EP2386797 A2 EP 2386797A2
Authority
EP
European Patent Office
Prior art keywords
gas burner
flow path
inner diameter
auslassgeometrie
gas
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Withdrawn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
EP11165612A
Other languages
German (de)
English (en)
Other versions
EP2386797A3 (fr
Inventor
Jose Moreira
Ricardo Jorge de Sousa Vieira
Amilcar Rodrigues
Marco Marques
Luis Monteiro
Bruno Ribeiro
Raul Manuel Andrade Dos Reis
Victor Santos
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.)
Robert Bosch GmbH
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 EP2386797A2 publication Critical patent/EP2386797A2/fr
Publication of EP2386797A3 publication Critical patent/EP2386797A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the 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
    • 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
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • 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
    • F23D14/84—Flame spreading or otherwise shaping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Definitions

  • the invention relates to a gas burner for a heater according to the preamble of claim 1.
  • Generic gas burners for use in heaters are from the US 5,735,681 and the US 5,879,148 known. They have a fan for conveying a gas / air mixture or an air stream, is fed into the gas. In the flow path of the gas / air mixture is a vortex generating device for intensive mixing and for swirl generation. The cylindrical flow path opens into a combustion zone in which the gas / air mixture burns. This combustion zone is arranged in a closed combustion chamber and assigned to a heat exchanger, which is acted upon by the hot gases and flows through heating water.
  • Heaters especially gas water heaters, are very compact and usually have closed combustion chambers for room air independent operation.
  • the gas burner according to US 5,735,681 and US 5,879,148 were not optimized for operation in closed combustion chambers and would require at least a three times larger surrounding combustion chamber, as is commonly available in heaters with a correspondingly associated heat exchanger.
  • This is due to increasing emissions, especially carbon monoxide emissions, in gas combustion, because a recirculation of hot gases in the combustion chamber sets. This recirculation extends all around from the upper to the lower combustion chamber areas and has a strong influence on the flame. Especially their edge regions are forced from the outside to the center of the flame, so that there is a very slim, high flame shape, which comes close to the heat exchanger.
  • nitrogen oxide emissions this effect has no consequences or even improves the situation somewhat.
  • carbon monoxide emissions are rising sharply.
  • the invention is therefore an object of the invention to provide a low-emission gas burner for a heater with a compact design.
  • the gas burner for a heater is characterized in that the cylindrical flow path has an expanding outlet geometry at its mouth.
  • the region of the mouth of the cylindrical flow path within the combustion chamber is provided with a widening outlet geometry, so that this region has a larger inner diameter than the cylindrical flow path.
  • the expanding Auslassgeometrie is designed shell-like and protrudes freely into the combustion chamber.
  • the inside diameter of the outlet geometry is at least 1.0 to 2.5 times the inside diameter of the cylindrical flow path and the height of the outlet geometry is about 0.5 to 2.5 times the inside diameter of the cylindrical flow path.
  • the internal diameter of the outlet geometry remains constant over its height.
  • the inner diameter of the outlet geometry increases continuously over its height and in the direction of the orifice, and in a third embodiment linearly.
  • the inner diameter of the Auslassgeometrie over the height and in the direction of the orifice can also increase gradually. All variants can be combined with each other, so that a large variety of design, for example, adapted to combustion chamber and heat exchanger geometry and performance of the gas burner is available.
  • the inner diameter of the outlet geometry in the area of the free end opening corresponds at least to 1.5 to 2.5 times the inner diameter of the cylindrical flow path.
  • a low-emission gas burner for a heater with a compact design is created, which achieves a high combustion quality with its vortex generating device for the gas / air mixture even in a relatively small combustion chamber. This is very important for such heaters or burners because the statutory emission limit values, in particular for nitrogen oxide and carbon monoxide, will be further reduced in the future.
  • the bulging outlet geometry at the mouth of the cylindrical flow path forms an effective barrier all around the flame, at least the flame root, and the hot gases recirculating in the combustion chamber. Furthermore, with the invention, the flame stability improves when modulating the gas burner, especially at lower powers. An unfavorable effect on emissions dilution of the fuel gas in the region of the flame edges is reduced or avoided.
  • the drawing illustrates an embodiment of the invention and schematically shows a heater in a vertical section.
  • the gas burner 1 is arranged in the lower region of the heater 2 and is associated with a heat exchanger 3. With a blower, not shown, a gas / air mixture is conveyed via a cylindrical flow path 4 with an inner diameter D1 into a combustion zone 5 in a closed combustion chamber 6. Before the confluence with a combustion zone 5 is a vortex generating device 7 for gas / air mixture for swirl generation in the flow path. 4
  • the cylindrical flow path 4 is provided with a widening outlet geometry 8, which is designed shell-like.
  • the inner diameter D2, D3 of the outlet geometry 8 increases linearly over its height and in the direction of the outlet.
  • the inner diameter D 2, D 3 of the outlet geometry 8 corresponds at least to 1.5 to 2.5 times the inner diameter D 1 of the cylindrical flow path 4 in the region of the orifice at the free end.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)
EP11165612.0A 2010-05-12 2011-05-11 Brûleur à gaz pour un appareil de chauffage Withdrawn EP2386797A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010020389A DE102010020389A1 (de) 2010-05-12 2010-05-12 Gasbrenner für ein Heizgerät

Publications (2)

Publication Number Publication Date
EP2386797A2 true EP2386797A2 (fr) 2011-11-16
EP2386797A3 EP2386797A3 (fr) 2017-11-15

Family

ID=44509818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11165612.0A Withdrawn EP2386797A3 (fr) 2010-05-12 2011-05-11 Brûleur à gaz pour un appareil de chauffage

Country Status (2)

Country Link
EP (1) EP2386797A3 (fr)
DE (2) DE202010017464U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9335050B2 (en) 2012-09-26 2016-05-10 United Technologies Corporation Gas turbine engine combustor
US9404654B2 (en) 2012-09-26 2016-08-02 United Technologies Corporation Gas turbine engine combustor with integrated combustor vane
US9482432B2 (en) 2012-09-26 2016-11-01 United Technologies Corporation Gas turbine engine combustor with integrated combustor vane having swirler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735681A (en) 1993-03-19 1998-04-07 The Regents, University Of California Ultralean low swirl burner
US5879148A (en) 1993-03-19 1999-03-09 The Regents Of The University Of California Mechanical swirler for a low-NOx, weak-swirl burner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1143465B (de) * 1956-08-03 1963-02-14 Vaillant Joh Kg Bunsenbrenner fuer Gasgeraete
IT1245564B (it) * 1990-03-27 1994-09-29 Vaillant Joh Gmbh & Co Bruciatore atmosferico a gas a premiscelazione
EP0931979A1 (fr) * 1998-01-23 1999-07-28 DVGW Deutscher Verein des Gas- und Wasserfaches -Technisch-wissenschaftliche Vereinigung- Procédé et dispositif pour supprimer les fluctuations par flamme et par pression dans un four

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735681A (en) 1993-03-19 1998-04-07 The Regents, University Of California Ultralean low swirl burner
US5879148A (en) 1993-03-19 1999-03-09 The Regents Of The University Of California Mechanical swirler for a low-NOx, weak-swirl burner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9335050B2 (en) 2012-09-26 2016-05-10 United Technologies Corporation Gas turbine engine combustor
US9404654B2 (en) 2012-09-26 2016-08-02 United Technologies Corporation Gas turbine engine combustor with integrated combustor vane
US9482432B2 (en) 2012-09-26 2016-11-01 United Technologies Corporation Gas turbine engine combustor with integrated combustor vane having swirler

Also Published As

Publication number Publication date
DE102010020389A1 (de) 2011-11-17
DE202010017464U1 (de) 2011-11-15
EP2386797A3 (fr) 2017-11-15

Similar Documents

Publication Publication Date Title
DE2918416C2 (de) Vergasungsölbrenner
EP0394911B1 (fr) Installation de combustion
EP0348646B1 (fr) Brûleur
EP2386797A2 (fr) Brûleur à gaz pour un appareil de chauffage
DE102010021997B4 (de) Gasbrenner für ein Heizgerät
EP4063733B1 (fr) Appareil de chauffage avec un dispositif permettant de réduire les conséquences d'un retour de flamme dans un brûleur à prémélange de l'appareil de chauffage
WO2016131807A1 (fr) Brûleur à formation de flamme améliorée
DE19507088B4 (de) Vormischbrenner
AT406706B (de) Brenner für gas- und ölheizkessel
EP2679897B1 (fr) Brûleur à prémélange d'huile avec tourbillonneur
DE102005038662B4 (de) Brennkopf und Verfahren zur Verbrennung von Brennstoff
DE10221495B4 (de) Brenner für ein Heizgerät
EP2515036A2 (fr) Chaudière
EP0865590A1 (fr) Bruleur atmospherique
DE19814768A1 (de) Blaubrenner
DE3301083A1 (de) Brenner zur stoechiometrischen verbrennung fluessiger oder gasfoermiger brennstoffe
DE19927013B4 (de) Gebläsebrenner
DE3218258C2 (de) Oberflächenbrenner mit einstufiger Primärluftzufuhr
AT406795B (de) Brenner für gas- und ölheizungskessel
WO1993005342A1 (fr) Bruleur a gaz, notamment pour gaz liquefie
DE102010046956A1 (de) Ölvormischbrenner
CH696152A5 (de) Vormischender Brenner mit einem zylindrischen Flammenhalter.
DE29618399U1 (de) Luftdüse
WO2023023873A1 (fr) Procédé de combustion d'un combustible liquide ou gazeux dans une chaudière, chaudière pour la mise en œuvre du procédé et bain thermique doté d'une chaudière
DE102010051601A1 (de) Heizkessel

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F23D 14/02 20060101ALI20171012BHEP

Ipc: F23C 9/00 20060101AFI20171012BHEP

17P Request for examination filed

Effective date: 20180515

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180516