EP0488481A1 - Brûleur à gaz à faible taux de NOx - Google Patents

Brûleur à gaz à faible taux de NOx Download PDF

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Publication number
EP0488481A1
EP0488481A1 EP91203140A EP91203140A EP0488481A1 EP 0488481 A1 EP0488481 A1 EP 0488481A1 EP 91203140 A EP91203140 A EP 91203140A EP 91203140 A EP91203140 A EP 91203140A EP 0488481 A1 EP0488481 A1 EP 0488481A1
Authority
EP
European Patent Office
Prior art keywords
burner
plates
gas
gas burner
tube
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Withdrawn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
EP91203140A
Other languages
German (de)
English (en)
Inventor
Hermanus Johannes Meuleman
Terence Arthur Devlin
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.)
REMEHA FABRIEKEN BV
Original Assignee
REMEHA FABRIEKEN 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 REMEHA FABRIEKEN BV filed Critical REMEHA FABRIEKEN BV
Publication of EP0488481A1 publication Critical patent/EP0488481A1/fr
Withdrawn legal-status Critical Current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
    • F23D14/70—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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
    • 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 
    • F23C2203/00—Flame cooling methods otherwise than by staging or recirculation
    • F23C2203/20—Flame cooling methods otherwise than by staging or recirculation using heat absorbing device in flame

Definitions

  • This invention relates to a low NO x atmospheric gas burner comprising at least one burner tube having a plurality of gas outlet orifices terminating in a burner bed, while a plurality of plates are arranged above the burner tube within the reach of the flame, which plates lower the temperature, effect a stepped combustion, are arranged parallel to and on opposite sides of the orifices provided in the burner tube and disposed in line parallel to the burner axis, and are connected direct to the burner tube substantially throughout their lower ends.
  • the object of the present invention is to improve such a burner known from Netherlands patent application 8900030.
  • the burner according to the invention is characterized in that at least one of the upper ends of the plates is bent outwards.
  • the advantage achieved with this feature is not only that the NO x content is reduced further as a result of improved cooling, but also that better combustion is obtained as a result of improved mixing of the combustion gas and the secondary air supplied owing to the greater turbulence caused in the converging passage between widening pairs of plates, the result being a more stable flame.
  • a low NO x atmospheric gas burner comprises a burner tube 1, the inlet portion of which constitutes a mixing tube portion 2 connecting to a diffuser portion 3.
  • the burner tube 1 proper comprises a bottom 4 and a constriction portion 5 opposite therefrom.
  • a distributor plate 6 Extending between these portions is a distributor plate 6.
  • Extending upwards from this burner tube part is a narrowing portion 7 at the top of which are arranged gas outlet orifices consisting of flat strips (not shown) together forming a burner bed.
  • gas outlet orifices consisting of flat strips (not shown) together forming a burner bed.
  • Extending upwards from the walls forming said narrowing portion are two conically flaring plates 8, which lower the temperature and promote a stepped combustion.
  • the straight and corrugated strips can be supported not only at their ends but also in the middle by means of a support 9.
  • apertures 12 are provided in the plates 8.
  • the tapering configuration of the burner tube walls connecting to the bottom 4 ensures that the sound produced by the burner will be damped in the burner tube and not be so reflected that the sound vibrations just produced would be amplified.
  • the mixing tube portion comprises at its free end two fastening flanges 11 to be connected to a gas supply pipe. It is noted that the distance H (indicated in Fig. 1) from the cross section of equal width up to the top of the burner bed should be so large as to ensure a straight flow of the combustion gas mixture to the burner orifices. This ensures a straight flow of the gas-air mixture to the burner bed and hence a uniform flame height and hence a minimal sound production.
  • the free edge of the plates 8 is provided with an inward flanged portion 18 which brings about a reduced pressure at that point in the passing gas mixture flow, which leads to greater flame stability.
  • the embodiment shown in Fig. 5 shows a burner block 17 arranged in a furnace space 15 enclosed by a wall 16.
  • the burner block 17 comprises four burner tubes 1 such as shown in Figs 1-4A in side-by-side arrangement.
  • This construction ensures a minimal NO x content in the exhaust gas, the conical configuration of the plates 8 leading to an eminent mixing of the combustion gas passing from the burner tube between the plates 8 and the secondary air supplied externally along the plates.
  • the cross-section between the plates 8 of each burner increases in the direction of discharge, the speed of the passing combustion gas will decrease, which effects not only a better mixture but also a better flame stability.
  • a burner bed formed by plane and corrugated plates or strips instead of a burner bed formed by plane and corrugated plates or strips, a burner bed of ceramic material as is known per se in the art can also be used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP91203140A 1990-11-30 1991-11-29 Brûleur à gaz à faible taux de NOx Withdrawn EP0488481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002626A NL9002626A (nl) 1990-11-30 1990-11-30 Nox-arme gasbrander.
NL9002626 1990-11-30

Publications (1)

Publication Number Publication Date
EP0488481A1 true EP0488481A1 (fr) 1992-06-03

Family

ID=19858062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91203140A Withdrawn EP0488481A1 (fr) 1990-11-30 1991-11-29 Brûleur à gaz à faible taux de NOx

Country Status (3)

Country Link
EP (1) EP0488481A1 (fr)
CA (1) CA2056492A1 (fr)
NL (1) NL9002626A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022491A1 (fr) * 1995-01-20 1996-07-25 Gas Research Institute, Inc. CHAMBRES DE COMBUSTION ETAGEE A AIR COMBURANT A FAIBLE DEGAGEMENT DE NO¿x?
JP2014009839A (ja) * 2012-06-28 2014-01-20 Purpose Co Ltd 燃焼装置、燃焼方法および給湯装置
US10281173B2 (en) 2012-06-28 2019-05-07 Purpose Co., Ltd. Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3802368A (en) * 1969-05-20 1970-12-03 Radiation (Australia) Proprietary Limited Conversion apparatus
DE8604053U1 (de) * 1986-02-13 1986-04-03 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Vormischgasbrenner
US4767319A (en) * 1987-03-27 1988-08-30 Coen Company Duct burner
DE8914576U1 (de) * 1989-12-12 1990-02-15 Gaswärme-Institut eV, 4300 Essen Brenner mit einem Brennerrohr zum Verbrennen eines Gemisches aus Brennstoff und Primärluft
EP0377233A1 (fr) * 1989-01-06 1990-07-11 Remeha Fabrieken B.V. Brûleur atmosphérique à gaz à faible taux de NOx
DE9010640U1 (de) * 1990-07-16 1990-09-20 Buderus Heiztechnik GmbH, 6330 Wetzlar Atmosphärischer Gasbrenner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3802368A (en) * 1969-05-20 1970-12-03 Radiation (Australia) Proprietary Limited Conversion apparatus
DE8604053U1 (de) * 1986-02-13 1986-04-03 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Vormischgasbrenner
US4767319A (en) * 1987-03-27 1988-08-30 Coen Company Duct burner
EP0377233A1 (fr) * 1989-01-06 1990-07-11 Remeha Fabrieken B.V. Brûleur atmosphérique à gaz à faible taux de NOx
DE8914576U1 (de) * 1989-12-12 1990-02-15 Gaswärme-Institut eV, 4300 Essen Brenner mit einem Brennerrohr zum Verbrennen eines Gemisches aus Brennstoff und Primärluft
DE9010640U1 (de) * 1990-07-16 1990-09-20 Buderus Heiztechnik GmbH, 6330 Wetzlar Atmosphärischer Gasbrenner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 112 (M-298)(1549) 25 May 1984 & JP-A-59 021 909 ( TOKYO SHIBAURA DENKI K.K. ) 4 February 1984 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022491A1 (fr) * 1995-01-20 1996-07-25 Gas Research Institute, Inc. CHAMBRES DE COMBUSTION ETAGEE A AIR COMBURANT A FAIBLE DEGAGEMENT DE NO¿x?
US5645413A (en) * 1995-01-20 1997-07-08 Gas Research Institute Low NOx staged-air combustion chambers
JP2014009839A (ja) * 2012-06-28 2014-01-20 Purpose Co Ltd 燃焼装置、燃焼方法および給湯装置
US10281173B2 (en) 2012-06-28 2019-05-07 Purpose Co., Ltd. Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater
US11346580B2 (en) 2012-06-28 2022-05-31 Purpose Co., Ltd. Burner, combustion apparatus, method for combustion, method for controlling combustion, recording medium, and water heater

Also Published As

Publication number Publication date
NL9002626A (nl) 1992-06-16
CA2056492A1 (fr) 1992-05-31

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