EP0303052B1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

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Publication number
EP0303052B1
EP0303052B1 EP88110907A EP88110907A EP0303052B1 EP 0303052 B1 EP0303052 B1 EP 0303052B1 EP 88110907 A EP88110907 A EP 88110907A EP 88110907 A EP88110907 A EP 88110907A EP 0303052 B1 EP0303052 B1 EP 0303052B1
Authority
EP
European Patent Office
Prior art keywords
gas
mixture
outlet openings
burner
primary 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.)
Expired - Lifetime
Application number
EP88110907A
Other languages
German (de)
English (en)
Other versions
EP0303052A1 (fr
Inventor
Hans-Albrecht Kohlmann
Thomas Pieper
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.)
Vaillant BV
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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 Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0303052A1 publication Critical patent/EP0303052A1/fr
Application granted granted Critical
Publication of EP0303052B1 publication Critical patent/EP0303052B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone

Definitions

  • the invention relates to a gas burner with at least one fuel rod, the wall of which is penetrated on the upper side by outlet openings for a fuel gas / primary air mixture, wherein guides for a non-ignitable gas or gas mixture are provided in the area above these outlet openings.
  • FR-OS 25 84 798 a continuous or storage water heater with an atmospheric gas burner has become known, in which recirculated exhaust gas is mixed with the secondary air flow and is led into the area of the flame root of the individual main burner flames.
  • a cover flanking the burner tip is used, which form spaces on the side of the flat burner plate for the exit of the exhaust gas / secondary air mixture.
  • the disadvantage here is in particular the considerable distance between the outlet openings for the exhaust gas / secondary air mixture and the fuel gas / primary air mixture.
  • the object of the invention is to provide simply constructed guides which generate a homogeneous gas or gas mixture stream in order to achieve combustion which is as pollutant-free as possible.
  • an air-enriched fuel gas which, due to its high air content, is no longer ignitable, i.e. the fuel gas content is less than 4.5% by volume (for H gas).
  • a pure fuel gas can also be considered as an admixture, and a fuel gas / air mixture with a fuel gas content of more than 13.4% by volume (for H gas).
  • the total air ratio can be reduced and the combustion efficiency can be improved by an optimized way of supplying the gas-secondary air mixture or other gas.
  • the flame temperature is reduced by this supply and the NO x emission is thereby reduced.
  • a non-ignitable mixture of gas and secondary air namely reduces the oxygen content of this secondary air and thereby lowers the flame temperature. If, on the other hand, pure gas is supplied, the exhaust gases are used to reduce the oxygen content of the secondary air, and so to speak there is a step combustion.
  • the aim of this guide is above all essential, and there are two possibilities within the scope of the invention to carry out such arrangements promisingly, without running the risk that unburned secondary gas gets into the exhaust gas flue.
  • a closer proximity of both outlet openings can be achieved according to a first solution in that a distributor forming the guides for the gas or the gas mixture at least partially encloses the fuel rod fed with the fuel gas / primary air mixture, with longitudinal sections in which the mixture outlet openings of the fuel rod are supplied with the fuel gas-primary air mixture, with longitudinal sections of the distributor, which have outlet openings for the gas or the gas mixture, change in a constant sequence.
  • a distributor for the gas or the gas mixture can also be supplied in a tubular form, which is fed with the fuel gas / primary air mixture Include fuel rod up to the two boundaries of its apex area having the mixture outlet openings and have outlet openings for the gas or the gas mixture with mouths directed towards the apex area at the two tips of its crescent-shaped cross section.
  • the target direction of the flanking outlet openings can be determined particularly well and reliably in this way, especially when the apex region is flattened.
  • the non-ignitable gas or gas mixture is preferably pure inert gas or a mixture of fuel gas and secondary air or recirculated flue gas and secondary air.
  • FIGS. 1 to 5 illustrate an embodiment of a gas burner, according to which a tubular distributor 1 of the gas-secondary air mixture surrounds the fuel rod 2 supplied with the fuel gas-primary air mixture according to FIG. 2, longitudinal sections 3 and 4 of these two guides 1 and 2, respectively , in which outlet openings 5 and 6 are provided for one and the other of the different mixtures, alternate with one another according to FIG. 3.
  • the sections 4 of the distributor 1 guiding the gas-secondary air mixture are connected to one another via its bottom region.
  • the outlet openings 6 for the gas-secondary air mixture can, as shown in FIGS. 4 and 5, be directed radially or obliquely against the region located above the outlet openings 5.
  • FIGS. 6 to 8 show embodiments in which a tube forming the distributor 7 for a gas / secondary air mixture contains the likewise tubular fuel rod 2, which is fed with the fuel gas / primary air mixture, up to the bilateral limits of the apex region 7 through which mixture outlet openings 5 pass comprises and forms or delimits the outlet openings 6 for the gas-secondary air mixture at the two ends of the sickle-shaped cross section.
  • FIG. 8 shows a modified embodiment with a flattened apex region 7 of the fuel rod 2. This flattening facilitates the inflow of the gas-secondary air mixture to the outlet openings 5 of the burner rod 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Glass Compositions (AREA)
  • Gas Separation By Absorption (AREA)

Claims (5)

  1. Brûleur à gaz avec au moins une rampe dont la face supérieure comporte des orifices de sortie pour un mélange d'air primaire/gaz combustible, des canalisations pour un gaz ou un mélange gazeux non combustible étant dirigées sur la zone au-dessus de ces orifices, caractérisé par le fait qu'un distributeur (1) formant les canalisations pour le gaz ou le mélange gazeux non combustible, entoure la rampe (2) alimentée en mélange d'air primaire/gaz combustible, des sections (3) comportant les orifices (5) de la rampe (2) alternant avec des sections (4) du distributeur (1), munies d'orifices de sortie (6) pour le gaz ou le mélange gazeux non combustible (fig. 1 à 5).
  2. Brûleur à gaz suivant la revendication 1, caractérisé par le fait que les orifices (6) pour le gaz ou le mélange gazeux présentent des ouvertures orientées en biais sur les zones au-dessus des orifices (5) pour le mélange d'air primaire/gaz combustible (fig. 5).
  3. Brûleur à gaz avec au moins une rampe dont la face supérieure comporte des orifices de sortie pour un mélange d'air primaire/gaz combustible, des canalisations pour un gaz ou un mélange gazeux non combustible étant dirigées sur la zone au-dessus de ces orifices, caractérisé par le fait qu'un distributeur (1) formant les canalisations pour le gaz ou le mélange gazeux non combustible, entoure une rampe (2) tubulaire alimentée en mélange d'air primaire/gaz combustible, jusqu'aux bords de la zone (7) comportant les orifices de sortie (5) du mélange, et présente aux deux pointes de sa section en forme de faucille des orifices de sortie (6) pour le gaz ou le mélange gazeux, dont les ouvertures sont dirigées sur la zone (7) (fig. 6 à 8).
  4. Brûleur à gaz suivant la revendication 3, caractérisé par le fait que la zone (7) de la rampe (2) est aplatie (fig. 8).
  5. Brûleur à gaz suivant l'une des revendications précédentes, caractérisé par le fait que le gaz ou le mélange gazeux non combustible est du gaz inerte pur ou un mélange de gaz combustible et d'air secondaire ou de gaz de fumée reconduit et d'air secondaire.
EP88110907A 1987-07-15 1988-07-08 Brûleur à gaz Expired - Lifetime EP0303052B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1783/87 1987-07-15
AT0178387A AT393891B (de) 1987-07-15 1987-07-15 Gasbrenner

Publications (2)

Publication Number Publication Date
EP0303052A1 EP0303052A1 (fr) 1989-02-15
EP0303052B1 true EP0303052B1 (fr) 1992-03-04

Family

ID=3520888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110907A Expired - Lifetime EP0303052B1 (fr) 1987-07-15 1988-07-08 Brûleur à gaz

Country Status (5)

Country Link
EP (1) EP0303052B1 (fr)
AT (2) AT393891B (fr)
DE (2) DE3868771D1 (fr)
ES (1) ES2030797T3 (fr)
GR (1) GR3004554T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579315A1 (fr) * 1992-07-07 1994-01-19 Ingenieursburo P.I. Produkt Innovatie B.V. Brûleur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584798A1 (fr) * 1985-07-11 1987-01-16 Vaillant Sarl Chauffe-eau instantane ou a accumulateur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US763057A (en) * 1903-11-03 1904-06-21 Kern Burner Company Gas-radiator.
US1228579A (en) * 1916-06-08 1917-06-05 Simon N Mentel Stove.
DE411548C (de) * 1924-01-03 1925-03-28 Gustav Ahrens Gasheizofen mit Rueckfuehrung der Abgase zum Brenner
CH504516A (de) * 1967-09-09 1971-03-15 Hoechst Ag Verfahren zur Herstellung neuer wasserlöslicher Disazofarbstoffe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584798A1 (fr) * 1985-07-11 1987-01-16 Vaillant Sarl Chauffe-eau instantane ou a accumulateur

Also Published As

Publication number Publication date
AT393891B (de) 1991-12-27
DE3868771D1 (de) 1992-04-09
ATA178387A (de) 1991-06-15
ATE73216T1 (de) 1992-03-15
DE3823956A1 (de) 1989-01-26
EP0303052A1 (fr) 1989-02-15
ES2030797T3 (es) 1992-11-16
GR3004554T3 (fr) 1993-04-28

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