EP2102551A2 - Brûleur avec diffuseur résistant à des températures élevées de fonctionnement - Google Patents

Brûleur avec diffuseur résistant à des températures élevées de fonctionnement

Info

Publication number
EP2102551A2
EP2102551A2 EP07859136A EP07859136A EP2102551A2 EP 2102551 A2 EP2102551 A2 EP 2102551A2 EP 07859136 A EP07859136 A EP 07859136A EP 07859136 A EP07859136 A EP 07859136A EP 2102551 A2 EP2102551 A2 EP 2102551A2
Authority
EP
European Patent Office
Prior art keywords
slopes
burner according
diffuser
pair
burner
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Withdrawn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
EP07859136A
Other languages
German (de)
English (en)
Inventor
Massimo Dotti
Giuseppe Fogliani
Massimo Gilioli
Renzo Vecchi
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.)
Beckett Thermal Solutions SRL
Original Assignee
Worgas Bruciatori 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 Worgas Bruciatori SRL filed Critical Worgas Bruciatori SRL
Publication of EP2102551A2 publication Critical patent/EP2102551A2/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • F23D14/045—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 a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2211/00—Thermal dilatation prevention or compensation
    • 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
    • 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
    • F23D2900/00017—Assembled burner modules

Definitions

  • Burner with diffuser resistant to high operating temperatures Burner with diffuser resistant to high operating temperatures .
  • the present invention relates to a burner with a diffuser resistant to high operating temperatures, in particular to a premixed burner .
  • Burners of this type are known from patent applications MO2003A000180 and MO2004A000031, and MO2004A000277, in the name of the same applicant.
  • burners are disclosed in which the burner diffuser is divided into a plurality of diffuser elements that are adjacent to one another, that are free to expand in at least a direction.
  • the burners disclosed in the aforementioned patent applications satisfactorily solve the problem of reducing the mechanical stress generated by the temperature variations to which the diffuser is subject during operation of the burner and by the temperature difference between the various diffuser zones.
  • the object of the present invention is to provide a gas burner, in particular a gas burner with a flat diffuser, that enables power per plan surface unit of the burner to be obtained that is significantly greater than that of burners known from the state of the art, with the same materials used to construct the burner diffuser.
  • a burner supplied with a gas and air fuel mixture comprising a diffuser on which openings are made for the passage and subsequent combustion of said mixture, said diffuser being divided into a plurality of diffuser elements that are adjacent to one another, characterised in that each diffuser element has a pair of converging slopes that are convergent on one another, said openings being made in each of the slopes of said pair of slopes .
  • each diffuser element has greater rigidity, for the same plan dimensions, than diffuser elements of the state of the art, inasmuch as the presence of the slopes noticeably increases the moment of inertia of the section of the diffuser element, which increases the resistance of the diffuser element to the mechanical stress induced by heat stress.
  • Figure 1 is a perspective view of a burner according to the invention
  • Figure 2 is a perspective view of a diffuser element of the burner in Figure 1;
  • Figure 3 is a top view of the diffuser element in Figure 2 ;
  • Figure 4 is the section IV-IV of the diffuser element in Figure 3 ;
  • Figure 5 is a cross section view of a distributing element that is couplable with the diffuser element in Figure 2 ;
  • Figure 6 illustrates the coupling between two adjacent diffuser elements;
  • Figure 7 is a cross section view of a version of the diffuser element;
  • FIG 8 is a cross section view of a distributing element that is couplable with the diffuser element in Figure 7.
  • a burner 1 according to the invention comprising a frame 2 to which a plurality of diffuser elements 3 is fixed.
  • the diffuser elements 3 have a substantially open box shape, with two substantially rectangular side faces 4, two front faces 5, having a rectangular shape, the upper side of which is replaced by two rectilinear segments 6 and 7 converging downwards in a V shape.
  • the diffuser element 3 is completed by an upper face consisting of a pair of slopes 8, 9 converging downwards, i.e. towards the inside of the diffuser element 3, and having substantially the same tilt as said rectilinear segments 6 and 7.
  • the angle ⁇ between the slopes 8 and 9 is comprised between approximately 30 and approximately 160°, is preferably comprised between approximately 65° and approximately 75°.
  • the side faces 4 of the diffuser element 3 are provided, below, with a plurality of protrusions 11, 11a, for example of tab shape, the protrusions 11, lla of one of the side faces 4 are staggered with respect to the protrusions 11, lla of the other side face, so that, placing two diffuser ⁇
  • the protrusions 11, 11a' of one of the two diffuser elements 3 are inserted between the protrusions 11, 11a of the other diffuser element 3, so as to make a sort of joint between the two diffuser elements 3.
  • the front faces 5 of the diffuser element 3 are provided with further protrusions 12 that are used to improve the stability of the coupling with the frame 2.
  • Figure 6 there is illustrated the coupling between two adjacent diffuser elements 3. Inside the diffuser element 3 there is arranged a distributing element 13.
  • the distributing element 13 comprises a pair of sides 14 that converge together at a first end thereof, connected, at said end by a connecting portion 15 which is substantially rectilinear, and two further ends 16, noticeably parallel to one another, connected to a second end of the sides 14, opposite said first end.
  • the distributing element 13 is insertible inside the diffuser element 3, so that the connecting portion 15 rests against the common head of the slopes 8 and 9 and the sides 14 are substantially parallel to the slopes 8 and 9.
  • the transverse dimensions of the distributing element 13 is such as to enable interfering coupling between the two further ends 16 and the internal surface of the side faces 4 of the diffuser element 3.
  • the sides 14 of the distributing element 13 are provided with openings for the passage of the mixture of air and fuel introduced into the burner 1. Between the sides 14 of the distributing element 13 and the internal surface of the slopes 8, 9 of the diffuser element 3 two spaces 17, 18 are defined in which the mixture, which has traversed the openings made in said sides 14, is distributed in a substantially uniform manner so as to obtain a substantially uniform distribution of the mixture at the outlet of the slits 10, and therefore a substantially even distribution of the flames generated by the combustion of said mixture .
  • FIG. 7 there is illustrated a version of a diffuser element 3a according to the invention.
  • the diffuser element 3a also has a substantially open box shape with two substantially rectangular side faces 4, two front faces (not visible in the figures) , being rectangular in shape, the upper side of which is replaced by two rectilinear segments converging upwards in a V shape.
  • the diffuser element 3a is completed by an upper face consisting of a pair of slopes 8a, 9a converging upwards, i.e. towards the outside of the diffuser element 3a, and having substantially the same tilt as said rectilinear segments. On each of the slopes 8a and 9a openings 10 are made for the exit and subsequent combustion of the mixture of fuel and air introduced into the burner 1.
  • the angle ⁇ ' between the slopes 8a and 9a is comprised between approximately 200° and approximately 330°, is preferably comprised between approximately 285° and approximately 295°.
  • the side faces 4a and the front faces of the distributing element 3a are provided with appendages that are completely similar to and have the same functions as the appendages 11, 11a, 12, 12a of the distributing element 3.
  • a distributing element 13a which is insertible inside the diffuser element 3a.
  • the distributing element 13a comprises a pair of sides 14a that converge together at a first end thereof, connected, at said end, by a curved connecting portion 15a, and two further ends 16a, that are noticeably parallel and are connected to a second end of the sides 14a, opposite said first end.
  • the distributing element 13a is insertible inside the diffuser element 3a, so that the. sides 14a are substantially parallel to the slopes 8a and 9a.
  • the transverse dimensions of the distributing element 13a are such as to enable interfering coupling between the two further ends 16a and the internal surface of the side faces 4a of the diffuser element 3a.
  • the sides 14a of the distributing element 3a are provided with openings for the passage of the mixture of air and fuel introduced into the burner 1.
  • a space 17a in which the mixture, which has traversed the openings made in said sides 14a, is distributed in a substantially uniform manner, so as to enable a substantially uniform distribution of the mixture to be obtained outside the slits 10 and therefore a substantially uniform distribution of the flames generated by the combustion of said mixture to be obtained.
  • the presence of the slopes 8, 9 and 8a, 9a increases the inertia moment of the cross section of the diffuser element 3, 3a making the element stiffer than diffuser elements known from the state of the art, having a substantially rectangular cross section.
  • This enables diffuser elements 3, 3a with a greater length to be made, so as to be able to also arrange them parallel to the larger side of the frame 2, which reduces the number of diffuser elements that are necessary, with the same frame 2 dimensions, with a significant saving in production and assembly costs.

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)

Abstract

L'invention concerne un brûleur (1) alimenté en mélange de combustible gaz et air et qui comporte un diffuseur sur lequel des ouvertures (10) sont effectuées pour le passage et la combustion ultérieure dudit mélange, ledit diffuseur étant divisé en une pluralité d'éléments diffuseurs (3,3a) qui sont adjacents les uns aux autres, chaque élément diffuseur (3,3a) ayant une paire de pentes convergentes (8,9; 8a, 9a) qui convergent ensemble, lesdites ouvertures (10) étant effectuées dans chacune des pentes (8, 9; 8a, 9a) de ladite paire de pentes.
EP07859136A 2006-12-22 2007-12-20 Brûleur avec diffuseur résistant à des températures élevées de fonctionnement Withdrawn EP2102551A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO20060419 ITMO20060419A1 (it) 2006-12-22 2006-12-22 Bruciatore con diffusore resistente ad alte temperature di esercizio
PCT/IB2007/004027 WO2008081271A2 (fr) 2006-12-22 2007-12-20 Brûleur avec diffuseur résistant à des températures élevées de fonctionnement

Publications (1)

Publication Number Publication Date
EP2102551A2 true EP2102551A2 (fr) 2009-09-23

Family

ID=39462070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07859136A Withdrawn EP2102551A2 (fr) 2006-12-22 2007-12-20 Brûleur avec diffuseur résistant à des températures élevées de fonctionnement

Country Status (3)

Country Link
EP (1) EP2102551A2 (fr)
IT (1) ITMO20060419A1 (fr)
WO (1) WO2008081271A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700062155A1 (it) * 2017-06-07 2018-12-07 Worgas Bruciatori Srl Bruciatore

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20120282A1 (it) * 2012-09-27 2014-03-28 Systema Polska Sp Zo O Testa di combustione a gas per bruciatori premiscelati
US11378273B2 (en) * 2017-01-11 2022-07-05 A. O. Smith Corporation Reduced resonance burner

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR426021A (fr) * 1910-02-19 1911-06-26 Henry Ellis Harris Perfectionnements dans les bruleurs atmosphériques
DE2132968A1 (de) * 1970-07-04 1972-01-13 Guiseppe Fogliani Gasbrenner
JPS6115014A (ja) * 1984-07-02 1986-01-23 Matsushita Electric Ind Co Ltd 高負荷燃焼装置
DE4014217A1 (de) * 1989-05-09 1990-11-15 Vaillant Joh Gmbh & Co Brennerplatte eines atmosphaerischen brenners
EP0579315A1 (fr) * 1992-07-07 1994-01-19 Ingenieursburo P.I. Produkt Innovatie B.V. Brûleur
US5520536A (en) * 1995-05-05 1996-05-28 Burner Systems International, Inc. Premixed gas burner
DE19541801A1 (de) * 1995-11-09 1997-05-15 Bosch Gmbh Robert Brenner
NL1001688C2 (nl) * 1995-11-17 1997-05-21 Furigas Assen Bv Brander met gesegmenteerd branderdek.
DE19713407B4 (de) * 1997-04-01 2005-06-23 Robert Bosch Gmbh Atmosphärischer Gasbrenner
WO2004111536A1 (fr) * 2003-06-19 2004-12-23 Worgas Bruciatori S.R.L. Bruleur avec diffuseur resistant aux temperatures de fonctionnement elevees
WO2007086146A1 (fr) * 2006-01-30 2007-08-02 Noritz Corporation Appareil de combustion
WO2008000473A1 (fr) * 2006-06-30 2008-01-03 Ab Skf Procédé de fabrication d'un arrangement de palier et arrangement de palier
KR100778716B1 (ko) * 2006-07-07 2007-11-22 주식회사 경동나비엔 가스버너의 염공부 구조

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008081271A3 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700062155A1 (it) * 2017-06-07 2018-12-07 Worgas Bruciatori Srl Bruciatore
EP3412967A1 (fr) * 2017-06-07 2018-12-12 Worgas Bruciatori S.R.L. Brûleur

Also Published As

Publication number Publication date
WO2008081271A3 (fr) 2008-08-28
WO2008081271A2 (fr) 2008-07-10
ITMO20060419A1 (it) 2008-06-23

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