EP0990845A2 - Brûleur atmosphérique à gaz refroidi par eau - Google Patents

Brûleur atmosphérique à gaz refroidi par eau Download PDF

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Publication number
EP0990845A2
EP0990845A2 EP99115368A EP99115368A EP0990845A2 EP 0990845 A2 EP0990845 A2 EP 0990845A2 EP 99115368 A EP99115368 A EP 99115368A EP 99115368 A EP99115368 A EP 99115368A EP 0990845 A2 EP0990845 A2 EP 0990845A2
Authority
EP
European Patent Office
Prior art keywords
gas burner
sheet metal
burner according
outflow openings
firing zone
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
EP99115368A
Other languages
German (de)
English (en)
Other versions
EP0990845A3 (fr
EP0990845B1 (fr
Inventor
Dieter Krauss
Ernst Schmidt
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 EP0990845A2 publication Critical patent/EP0990845A2/fr
Publication of EP0990845A3 publication Critical patent/EP0990845A3/fr
Application granted granted Critical
Publication of EP0990845B1 publication Critical patent/EP0990845B1/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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • 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
    • 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
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • 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
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling

Definitions

  • the invention is based on an atmospheric, water-cooled gas burner according to the genus of Main claim.
  • This type of gas burner is characterized by a simple final assembly, in which in one Work the pre-assembled burner deck onto one that common mixing chamber containing, tub or box-shaped component placed and connected to this can be.
  • the burner deck is designed as a one-piece casting, which is an elaborate tool for its manufacture needed.
  • the outflow openings in relation to cross-sectional size and Design set relatively narrow limits.
  • the inventive design of the gas burner with the Features of the main claim has the advantage that the parts of the burner deck is made using simpler tools can be and that there is greater freedom of movement with regard to the formation of the outflow openings.
  • the sheet metal is made of a material with good Corrosion behavior, preferably from a well deformable austenitic stainless steel, and if the Outflow openings in one of the two Sheet metal boards, preferably on the combustion chamber side, welded focal zone strips are formed from a high temperature resistant, preferably ferritic Stainless steel with high thermal conductivity.
  • the additional relaxation chambers between the common mixing chamber and the outflow openings can also be formed in that the mixing chamber side Sheet metal in the firing zone areas from the sheet level downward shaped sections.
  • a good flame retardancy results if the Outflow openings on the metal plate on the mixing chamber side provided and the recesses in the other sheet metal board limited by superscript, preferably jagged edges are.
  • the pressure loss in the flow of the fuel-air mixture between the mixing chamber and the Outflow openings, as well as the flame noise can be reduced if on the combustion chamber side Firing zone strips welded to the sheet metal with the top angled wall areas are provided or connected, which flow channels for the fuel-air mixture limit that to parallel to the cooling channels Lead outflow openings.
  • the intermediate part can be a gutter-shaped sheet metal part or a ceramic body his.
  • the upward angled wall areas of one Burning zone strips can also be directly between them Limit the flow channel.
  • the wall areas of the flow channels delimiting the described parts can be placed against each other that the flow channels are larger towards the outflow opening will have cross-section. This may change forming eddies of flame at the edges of the outflow openings reduce the tendency to remove the flames and also support the ignition of a burning zone to the other.
  • combustion zone regions of the burner deck containing the outflow openings are coated with a catalytically active layer. This can reduce CO emissions and better optimize CO 2 settings. At the same time, there is less NO x .
  • the burner deck can be manufactured inexpensively, though at least one sheet metal plate is formed by deep drawing. This allows the outflow or Form recesses precisely according to shape and position and arrange.
  • the two sheet metal boards can preferably by Laser welding can be connected to each other.
  • a fitting design and the smallest possible Pressure loss in the coolant flow results when the Cooling channels in the burner deck connected in parallel Entry chamber with an exit chamber in the burner deck connect.
  • the assembly of a gas burner according to Figures 1 to 3 has a burner deck 10, which consists of two deep-drawn, through Laser welding of interconnected sheet metal plates 12, 14 ( Figure 3).
  • the burner deck 10 has several elongated burning zones 16 in which parallel to each other arranged, slot-shaped outflow openings 18 for the Fuel gas-air mixture are provided. Between Burning zones 16 are arranged through cooling channels 20 local formations of the metal plates 12, 14 between these are formed. In the same way is on the burner deck 10 one with an inlet connection 22 for the coolant provided input chamber 24 and one with a drain pipe 26 provided output chamber 28, both of which parallel flow through cooling channels 20 are connected.
  • the burner deck 10 is on a casting process manufactured tub 30 attached, the one over the The totality of all the combustion zones 16 extending mixing chamber 32 contains gas and air for the combustion components.
  • the Mixing chamber 32 lead to the one indicated in FIG. 1 Axis lines 34 several injector channels 36 lying side by side on. To protect the injector openings 38 from a The flames overlap with the upper sheet metal plate 12 provided with a raised edge 40.
  • the drawing not shown means for igniting the outflowing Air-fuel mixture and for monitoring the flames attached diagonally to the corners of the burner deck 10.
  • the sheet metal plates 12, 14 consist of an easily deformable Material with good corrosion behavior, preferably made of an austenitic stainless steel.
  • the forms for education of the cooling channels 20 are in deep-drawing or internal high-pressure forming processes manufactured and the below below described, window-like recesses for unimpeded Passage of the fuel-air mixture are from the Stamped out sheet metal blanks.
  • the outflow openings 18 are at the first Embodiment according to Figure 3 in planes Separation zone strips 42 are provided, consisting of a high temperature resistant material with high Thermal conductivity, preferably from a ferritic Stainless steel.
  • the focal zone strips 42 extend over the entire length of the firing zones 16 and two long sides on edge regions 44 of the sheet metal plate 12 on between the recesses 46 in the sheet metal plate 12 and whose formations defining the cooling channels 20 are formed are.
  • the focal zone strips 42 are with the edge areas 44 the sheet metal plate 12 connected by welding.
  • the lower one Sheet metal board 14 is in the firing zones 16 with recesses 48 provided, which is under the recesses 46 in the Extend sheet metal plate 12 and together with this Fuel-air mixture unhindered from the mixing chamber 32 let the outflow openings 18 reach.
  • the embodiment of Figure 4 differs from previously described in that the outflow openings 18th provided in arched focal zone strips 50 and under these additional relaxation chambers 52 are formed. As a result, the fuel-air mixture is applied to the individual Firing zones 16 better distributed and also the Flames fanned out slightly, causing the ignition of one firing zone 16 to the other is facilitated.
  • the exemplary embodiments according to FIGS. 7 to 9 differ from the above in that the Outflow openings for the fuel-air mixture no longer transverse to the longitudinal axes of the firing zones, but parallel are arranged.
  • firing zone strips 58 welded to the upper metal plate 12, each with several, arranged one behind the other and by transverse webs 60 separate recesses are provided.
  • the Recesses are angled on both sides from upwards Wall areas 62 of the firing zone strips 58 limited.
  • Transverse webs 60 On the Transverse webs 60 is a sheet-metal part 64 bent in the shape of a groove attached, which together with the wall areas 62 lengthways ongoing, diverging enlarging to the Outflow openings leading flow channels 66 and limited. Due to the inclined flames next to the The advantages mentioned at the outset also the readiness to ignite improved on the burner deck.
  • FIG. 8 differs from that according to Figure 7 in that 64 instead of a sheet metal part Ceramic body 68 limits the flow channels 66 inside.
  • the burner deck according to FIG. 9 has a larger number of closer adjacent cooling channels 20 and combustion zones 16, in those between cheeks 70, the focal zone strips 72 are attached, one elongated flow channel 74 is formed, the outflow opening closer than in the Designs previously described on the cooling channels 20 lies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP99115368A 1998-10-02 1999-08-04 Brûleur atmosphérique à gaz refroidi par eau Expired - Lifetime EP0990845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19845356 1998-10-02
DE19845356A DE19845356A1 (de) 1998-10-02 1998-10-02 Atmosphärischer, wassergekühlter Gasbrenner

Publications (3)

Publication Number Publication Date
EP0990845A2 true EP0990845A2 (fr) 2000-04-05
EP0990845A3 EP0990845A3 (fr) 2000-08-02
EP0990845B1 EP0990845B1 (fr) 2004-06-16

Family

ID=7883148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115368A Expired - Lifetime EP0990845B1 (fr) 1998-10-02 1999-08-04 Brûleur atmosphérique à gaz refroidi par eau

Country Status (2)

Country Link
EP (1) EP0990845B1 (fr)
DE (2) DE19845356A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265028A1 (fr) * 2001-06-05 2002-12-11 Viessmann Werke GmbH & Co Brûleur à gaz atmosphérique
EP1314930A3 (fr) * 2001-11-27 2003-12-10 Fritz Dr.-Ing. Schoppe Foyer rotatif pour la combustion de combustible solide
EP1990580A1 (fr) * 2007-05-10 2008-11-12 Siemens Aktiengesellschaft Composants d'un brûleur pour un brûleur de turbine à gaz

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545844A1 (de) 1995-12-08 1997-06-12 Buderus Heiztechnik Gmbh Gasbrenner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1360796A (en) * 1970-09-12 1974-07-24 Dunlop Holdings Ltd Burners
JPS5921446B2 (ja) * 1979-01-19 1984-05-19 松下電器産業株式会社 ガスバ−ナ
DE3710244A1 (de) * 1987-03-28 1989-06-22 Vaillant Joh Gmbh & Co Brenner, insbesondere gasbrenner, brennerrost aus solchen brennern und wasserheizer mit solchen brennern
AT397567B (de) * 1988-02-08 1994-05-25 Vaillant Gmbh Gasbrenner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545844A1 (de) 1995-12-08 1997-06-12 Buderus Heiztechnik Gmbh Gasbrenner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265028A1 (fr) * 2001-06-05 2002-12-11 Viessmann Werke GmbH & Co Brûleur à gaz atmosphérique
EP1314930A3 (fr) * 2001-11-27 2003-12-10 Fritz Dr.-Ing. Schoppe Foyer rotatif pour la combustion de combustible solide
EP1990580A1 (fr) * 2007-05-10 2008-11-12 Siemens Aktiengesellschaft Composants d'un brûleur pour un brûleur de turbine à gaz
WO2008138815A1 (fr) * 2007-05-10 2008-11-20 Siemens Aktiengesellschaft Composant de brûleur pour brûleur de turbine à gaz

Also Published As

Publication number Publication date
DE19845356A1 (de) 2000-04-06
DE59909734D1 (de) 2004-07-22
EP0990845A3 (fr) 2000-08-02
EP0990845B1 (fr) 2004-06-16

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