EP0549416A1 - Brenner mit Verbrennungsgitter und Heizungsanlage mit einem solchen Brenner - Google Patents

Brenner mit Verbrennungsgitter und Heizungsanlage mit einem solchen Brenner Download PDF

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Publication number
EP0549416A1
EP0549416A1 EP92403425A EP92403425A EP0549416A1 EP 0549416 A1 EP0549416 A1 EP 0549416A1 EP 92403425 A EP92403425 A EP 92403425A EP 92403425 A EP92403425 A EP 92403425A EP 0549416 A1 EP0549416 A1 EP 0549416A1
Authority
EP
European Patent Office
Prior art keywords
chamber
grid
ignition
burner
distribution
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.)
Granted
Application number
EP92403425A
Other languages
English (en)
French (fr)
Other versions
EP0549416B1 (de
Inventor
Bernard Marchand
Philippe Morand
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Publication of EP0549416A1 publication Critical patent/EP0549416A1/de
Application granted granted Critical
Publication of EP0549416B1 publication Critical patent/EP0549416B1/de
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
    • F23D14/62—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
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F23D91/04—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations for heating liquids, e.g. for vaporising or concentrating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner

Definitions

  • the invention relates to a gas mixture burner and combustion grate (s) which can be used in particular in immersion tube heating installations.
  • This material also makes it possible to increase the overall efficiency of the installation by increasing the intrinsic performance of the burner.
  • the solution proposed in the invention consists in particular in that the grid of this burner is crossed not only by said first orifices, but also by second orifices of smaller section giving the grid a incomplete structure, porous to the air / gas which thus circulates through these two series of orifices.
  • these orifices will be distributed over substantially the entire surface of the grate, the number of second orifices being much greater than that of the first, so that, with the burner operating, the flames developed in the combustion chamber include darts of relatively great length substantially in the extension of the first orifices and a relatively short flame area, distributed opposite the said second orifices.
  • the grid could be made from the materials and structures belonging to the following list: sintered bronze or stack of finely perforated metal sheets, fibrous ceramic, metallic fabric.
  • the burner will also advantageously comprise means for igniting and controlling the flames placed next to the distribution chamber and opening into the combustion chamber.
  • these ignition and control means will receive the mixture flow necessary for ignition via an isolated or separate ignition chamber from the distribution chamber with independent or autonomous power supplies to authorize air / gas dosages specific to each. of these rooms.
  • a "local" ignition offset towards the outside of the main grate or of a peripheral ignition by a flame zone then bordering the periphery of the combustion chamber.
  • another characteristic of the invention provides for having a gas mixing turbine in the distribution chamber.
  • the invention also relates to an installation for heating a bath of liquid heated by such a burner, the combustion chamber of which is immersed in said bath, is connected to at least one exchanger tube. also immersed in this bath and in which can circulate, before their evacuation, the combustion products generated by the burner.
  • the burner identified as a whole 1 comprises a distribution chamber (also called “premix”) into which opens, by a preferably radial opening 5, the combustion air and combustible gas that begins to mix.
  • a distribution chamber also called “premix”
  • premix a distribution chamber into which opens, by a preferably radial opening 5, the combustion air and combustible gas that begins to mix.
  • the distribution chamber 3 which has the general shape of a cylindrical box with a substantially circular section, is limited transversely on its front face (AV) by a flame stabilization grid 11 crossed by the mixture of air and gas, after the latter has passed through a baffle or a distribution chute 12 defined or limited by a plate or any other transverse obstacle 13 favorable to the homogeneous mixture of gases.
  • the grid 11 has the function of ensuring a suitable distribution and good stabilization of the flames at the entrance to the combustion chamber 15 where these flames will develop.
  • this grid which here has the general shape of a substantially flat plate, has been constructed to be crossed, over its thickness e , by preferably two series of orifices comprising first orifices 19a of relatively large section (a few mm2), as well as second orifices 19b of smaller section giving the grid a sparse structure, porous to the air / gas mixture.
  • these two series of orifices will advantageously be distributed over substantially the entire active surface of the grid.
  • the number of second diffusion orifices 19b will be much greater than that of the main orifices 19a, for example in a ratio substantially between 15 to 1 and 30 to 1.
  • the cross section of these second orifices 19b it will be preferably 2 to 4 times smaller than that of the first orifices 19a.
  • the burner operating the flames developed in the combustion chamber (the cross section of which will preferably be slightly less than that of the grate) will include darts 21a of relatively great length extending substantially in the extension of the first orifices. 19a, while a general zone of relatively short flames 21b will be distributed opposite the second orifices 19b.
  • the grid may in particular be produced from materials and structures of the sintered bronze type or stack of finely perforated metal sheets or also of fibrous ceramic or metallic fabric.
  • a plate of this material with a thickness of approximately 3 mm, pierced with holes of 2 mm in cross section in a square pitch of 8 mm, the degree vacuum corresponding to these holes being about 3 to 8%.
  • an additional advantage of such a structure is to ensure its internal cooling by circulation through it of the air / gas flow.
  • the second orifices 19b advantageously formed substantially regularly through the surface of this grid, for some of them open out randomly on such and such a main orifice 19a, thus increasing the cross section of the latter, as illustrated. for example at the location of the orifice 19a1 in FIG. 3.
  • ignition means 23 making it possible to initiate combustion, as well as means 25 for controlling the presence of the flames.
  • the ignition means could for example consist of a spark plug, of the automobile spark plug type, mounted through the main grid 11.
  • these ignition means will preferably be arranged outside, next to the distribution chamber 3.
  • the igniter 23 may be disposed at the location of a passage 27 (see FIG. 4) formed from the side, through the grid 11, this passage receiving part of the burner head forming the igniter support 29 fitted with autonomous fuel gas 31 and combustion air 33 inlets (see Figures 1 and 2) to supply an ignition mixture chamber 35.
  • This chamber preferably separated or isolated from the distribution chamber by a wall 36 can communicate with the combustion chamber 15 through an additional grid 37 for stabilizing the ignition flame, this grid then extending substantially parallel to the plane of the main grid 11 and being traversed by the igniter 23, so that the electrodes 23a of the latter open into the combustion chamber 15 to ignite the mixture there.
  • the igniter 23 will preferably extend substantially parallel to the general axis 39 of the chamber 15, rather towards the periphery of the grid 11.
  • the ignition chamber 35 may have in the upper part the shape of a hollow, annular vertical column, surrounding a central cavity open to the open air of the igniter support, the head 23b of the igniter with its power cable 41 extending in this central cavity.
  • this same chamber will ensure mixing by rotary stirring of the gases until they meet, in the lower part, the transverse grid 37 at the place where the chamber ignition takes the form of a disc.
  • the burner can therefore also be equipped with a control means 25, the probe of which, for example consisting of an electrode 25a, preferably rectilinear, will extend into the development zone. flames attached respectively to the main grid 11 and to the secondary ignition grid 37, as clearly appears in FIG. 4.
  • control means 25 can pass through a well 43 itself passing through a second passage 45 formed through the main grid 11 so that the probe 25a can communicate with the combustion chamber 15, the head 25b of this control means with its electric power cable 47 remaining of course away from the combustion zone to be cooled by the ambient air.
  • main grid 11 will advantageously be held at its periphery by a flange 49 extending outwardly, substantially at the level of the connection which can be removable between the upper part of the burner comprising the distribution 3 and the lower part comprising the combustion chamber 15.
  • the flange 49 will locally define an annular cavity 51 external to the chambers 3 and 15.
  • a retaining means 53 such as a circlip, can maintain with a certain possible play the peripheral edge of the grid 11 .
  • the holding zone of this grid will be relatively thermally insulated from the hot part of the burner and the grid will be able to absorb thermal stress more easily.
  • FIG. 5 to briefly describe the preferred application of the burner 1 of the invention to the heating of an industrial bath of liquid 55 in which at least the combustion chamber 15 of the burner and a tube are immersed.
  • heat exchanger 57 connected to the outlet 15a of the combustion chamber 15 and which winds in the bath 55, which is heated by heat exchange with the combustion products generated by the burner and circulating in the tube before being evacuated to the outlet 57a of the same tube emerging outside.
  • This burner, identified 10 includes, like the previous one, a distribution chamber 30 communicating with a combustion chamber 32 through a main combustion grate 34 of the same type as the previous one (11).
  • the distribution chamber 30 is here tangentially supplied with air and combustible gas (already at least preferably partially mixed) via an intake manifold 38 which can be issued upstream of the air inlet 38a to which the gas inlet 38b is connected.
  • a brewing turbine 40 is placed facing it, in the chamber 30. It appeared preferable to place this turbine substantially at the level of the zone, opposite the grid, where the lateral pipe 38 is tangentially connected to the chamber 30.
  • the blades of the turbine will be able to receive the gas mixture transversely and thus be naturally driven in rotation by creating recirculation currents favorable to the homogenization of the gases and the limitation of thermal stresses.
  • a boss 42 situated, in FIG. 1, towards the top of the chamber 30 supports the rotation shaft 44 of the turbine which can rotate there in a conventional manner, via ball bearings (not shown).
  • the solution adopted here consists of "peripheral” ignition, via an ignition chamber 46 extending all around the distribution chamber 30, a priori essentially in its front part (AV).
  • a secondary combustion grate 52 has also been interposed between the ignition chamber and the combustion chamber.
  • this secondary grid may in particular have the shape of a frame or of a crown surrounding the main grid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Baking, Grill, Roasting (AREA)
  • Devices For Medical Bathing And Washing (AREA)
EP92403425A 1991-12-20 1992-12-16 Brenner mit Verbrennungsgitter und Heizungsanlage mit einem solchen Brenner Expired - Lifetime EP0549416B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9115888 1991-12-20
FR9115888A FR2685447B1 (fr) 1991-12-20 1991-12-20 Bruleur perfectionne a grille ainsi qu'installation de chauffage equipee d'un tel bruleur.

Publications (2)

Publication Number Publication Date
EP0549416A1 true EP0549416A1 (de) 1993-06-30
EP0549416B1 EP0549416B1 (de) 1996-08-14

Family

ID=9420294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92403425A Expired - Lifetime EP0549416B1 (de) 1991-12-20 1992-12-16 Brenner mit Verbrennungsgitter und Heizungsanlage mit einem solchen Brenner

Country Status (9)

Country Link
US (1) US5312244A (de)
EP (1) EP0549416B1 (de)
AT (1) ATE141399T1 (de)
CA (1) CA2085829A1 (de)
DE (1) DE69212790T2 (de)
DK (1) DK0549416T3 (de)
ES (1) ES2090556T3 (de)
FR (1) FR2685447B1 (de)
GR (1) GR3021120T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772461B1 (fr) * 1997-12-15 2000-02-11 Julien Lacaze Bruleur industriel a pre-melange de gaz combustible et d'air comburant
ITMI20020449A1 (it) * 2002-03-04 2003-09-04 Fondital Fonderie Italiane Nuo Bruciatore a gas e radiatore a gas equipaggiato con tale bruciatore

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE103046C (de) *
DE1401857A1 (de) * 1961-09-19 1969-02-06 Hermann Huenemeier Ohg Brenneranordnung
US3772427A (en) * 1971-06-14 1973-11-13 Gen Electric Combustion process for producing high surface area silica
EP0111609A1 (de) * 1982-12-14 1984-06-27 Centre D'etude Et De Realisations D'equipement Et De Materiel (C.E.R.E.M.) S.A.R.L. Entzündungs- und Speisevorrichtung für Gasradiatoren
EP0128809A2 (de) * 1983-06-08 1984-12-19 Gaz De France Gasbrenner des Vormischtyps und mit Flammenüberwachung und Anwendung dieses Brenners insbesondere für Tauchrohranlage
FR2593270A1 (fr) * 1986-01-22 1987-07-24 Etude Applic Gle Elements Meca Regulateur d'alimentation pour bruleur a gaz et sa combinaison avec un bruleur
EP0269488A1 (de) * 1986-11-07 1988-06-01 Gaz De France Vormischgasbrenner mit Flammenüberwachung
NL8800916A (nl) * 1987-04-16 1988-11-16 Rinnai Kk Branderplaat.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL176301C (nl) * 1974-08-24 Schwank Gmbh Toestel met ten minste een gasbrander voor een kookplaat.
JPS62166213A (ja) * 1986-01-17 1987-07-22 Paloma Ind Ltd バ−ナヘツド

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE103046C (de) *
DE1401857A1 (de) * 1961-09-19 1969-02-06 Hermann Huenemeier Ohg Brenneranordnung
US3772427A (en) * 1971-06-14 1973-11-13 Gen Electric Combustion process for producing high surface area silica
EP0111609A1 (de) * 1982-12-14 1984-06-27 Centre D'etude Et De Realisations D'equipement Et De Materiel (C.E.R.E.M.) S.A.R.L. Entzündungs- und Speisevorrichtung für Gasradiatoren
EP0128809A2 (de) * 1983-06-08 1984-12-19 Gaz De France Gasbrenner des Vormischtyps und mit Flammenüberwachung und Anwendung dieses Brenners insbesondere für Tauchrohranlage
FR2593270A1 (fr) * 1986-01-22 1987-07-24 Etude Applic Gle Elements Meca Regulateur d'alimentation pour bruleur a gaz et sa combinaison avec un bruleur
EP0269488A1 (de) * 1986-11-07 1988-06-01 Gaz De France Vormischgasbrenner mit Flammenüberwachung
NL8800916A (nl) * 1987-04-16 1988-11-16 Rinnai Kk Branderplaat.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 1 (M-656)(2848) 6 Janvier 1988 & JP-A-62 166 213 ( PALOMA IND LTD ) 22 Juillet 1987 *

Also Published As

Publication number Publication date
ATE141399T1 (de) 1996-08-15
ES2090556T3 (es) 1996-10-16
DE69212790D1 (de) 1996-09-19
DE69212790T2 (de) 1997-01-23
GR3021120T3 (en) 1996-12-31
EP0549416B1 (de) 1996-08-14
FR2685447B1 (fr) 1998-01-02
CA2085829A1 (en) 1993-06-21
US5312244A (en) 1994-05-17
DK0549416T3 (da) 1996-09-02
FR2685447A1 (fr) 1993-06-25

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