EP0908670A1 - Procédé et dispositif pour actionner un brûleur atmosphérique à gaz - Google Patents

Procédé et dispositif pour actionner un brûleur atmosphérique à gaz Download PDF

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Publication number
EP0908670A1
EP0908670A1 EP98118621A EP98118621A EP0908670A1 EP 0908670 A1 EP0908670 A1 EP 0908670A1 EP 98118621 A EP98118621 A EP 98118621A EP 98118621 A EP98118621 A EP 98118621A EP 0908670 A1 EP0908670 A1 EP 0908670A1
Authority
EP
European Patent Office
Prior art keywords
gas
nozzle
fuel
central
gas 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.)
Granted
Application number
EP98118621A
Other languages
German (de)
English (en)
Other versions
EP0908670B1 (fr
Inventor
Ulrich Besser
Kersten Wehmeier
Marcus Bienzle
Klaus Danner
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
Priority claimed from DE19810750A external-priority patent/DE19810750A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0908670A1 publication Critical patent/EP0908670A1/fr
Application granted granted Critical
Publication of EP0908670B1 publication Critical patent/EP0908670B1/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
    • F23D14/60—Devices for simultaneous control of gas and combustion air

Definitions

  • the invention is based on a method and one Device for operating an atmospheric gas burner.
  • the Injection of the fuel through a nozzle with constant Exit cross-section that is at a fixed distance and fixed position is arranged to the mixing tube opening of the gas burner.
  • the Air intake of the premixing system depends on Exit pulse of the driving fuel jet, the losses occurring with increasing fuel throughput increase disproportionately and thereby the fuel-air ratio over the modulation range of the gas burner is not constant.
  • Movable flow obstacles prevent air from entering Mixing tube in the lower load range or reduce the nozzle slidable to store their distance from the To change the mixing tube opening.
  • the inventive method and the inventive Device allow a simple way Variation of the air-fuel ratio leading to Compensation for changes in the air-fuel ratio over the modulation range and / or to adjust the Gas burner on different fuels without changing the nozzle can be used. Furthermore, the arrangement according to the invention by a simple structure, that works without moving parts.
  • the distribution of the total flow of fuel gas into one Centrally aligned with respect to the mixing tube opening Part gas flow and at least one other non-central aligned partial gas flow can be adjusted via the required burner output take place by Keeping the air-fuel ratio constant above that entire modulation range of the gas burner a central Nozzle is provided for a maximum required Combustion air intake at nominal load of the Gas burner is designed while an outer nozzle is provided is the minimum required combustion air intake is designed in the partial load range of the gas burner.
  • the gas supply can take place in such a way that with decreasing Burner load an increasingly larger proportion of the supplied fuel passes through the outer nozzle while the partial gas flow emerging through the central nozzle is reduced. Because the relationship between burner performance and air ratio ⁇ especially with atmospheric burners low pollution tendency is fixed, the Distribution of the partial gas flows in a characteristic curve or Characteristic curve set stored in the control unit of the heater become.
  • the The outer nozzle is arranged as concentric with the central nozzle Ring nozzle formed while a second Embodiment the outer nozzle from radial to the central nozzle arranged individual nozzles.
  • the presence of two separately controllable Fuel supplies to the injector system can be advantageous also for a temporary enrichment of the fuel-air mixture be used when the gas burner is cold started.
  • Figure 1a shows that Injector system of the gas burner with the nozzle system in the Section and the entrance area of the mixing tube in Side view
  • Fig. 1b shows an alternative embodiment of a Gas supply
  • Fig. 1c an alternative embodiment of the Nozzle system.
  • the injector system a central nozzle 10 with a circular cross-section, from a Ring nozzle 12a is surrounded concentrically.
  • the ring nozzle 12a has a larger outlet cross section than the central nozzle 10 and is opposite this in the flow direction of the Axially set fuel.
  • the central nozzle 10 is made from a gas manifold 18 fed, which the fuel via a control valve 20th is fed.
  • the ring nozzle 12a is with a Gas manifold 22 connected into which the fuel a control valve 24 arrives.
  • the control valves 20 and 24 that are charged with the same gas, are on a Control unit 26 of a combustion control device connected, which depends on the fuel gas supply on the load status of the gas burner and / or the one used Gas type distributed to the two nozzles 10 and 12a.
  • Fig. 1b is a second alternative embodiment of the gas supply shown.
  • the two Valves for the gas distribution pipes 18, 22 in this case as combined safety / control valves 32, 34 are formed, which together is preceded by a safety valve 36.
  • Such control of Gas supply can be in a characteristic curve or family of curves in the Control unit 26 are stored.
  • the second embodiment of the device according to FIG 1c are used as an outer nozzle instead of the ring nozzle 12a
  • the sum of the Exit cross sections of the individual nozzles 12b is also larger than the outlet cross section of the central nozzle 10.
  • the individual nozzles 12b are like that Embodiment according to Figure 1a compared to the central Nozzle 10 axially in the direction of flow of the fuel set back.
  • the distribution of the gas flows can on the same way as the first Embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
EP19980118621 1997-10-06 1998-10-01 Dispositif pour actionner un brûleur atmosphérique à gaz Expired - Lifetime EP0908670B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19744082 1997-10-06
DE19744082 1997-10-06
DE19810750A DE19810750A1 (de) 1997-10-06 1998-03-12 Verfahren und Vorrichtung zum Betreiben eines atmosphärischen Gasbrenners
DE19810750 1998-03-12

Publications (2)

Publication Number Publication Date
EP0908670A1 true EP0908670A1 (fr) 1999-04-14
EP0908670B1 EP0908670B1 (fr) 2004-07-28

Family

ID=26040616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980118621 Expired - Lifetime EP0908670B1 (fr) 1997-10-06 1998-10-01 Dispositif pour actionner un brûleur atmosphérique à gaz

Country Status (1)

Country Link
EP (1) EP0908670B1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB230149A (en) * 1923-11-29 1925-03-02 George Helps Improvements in gas burners
CH314202A (de) * 1952-04-03 1956-05-31 Schweiz Gasapparatefabrik Solo Regulierbarer Gasbrenner mit mehreren sukzessive zueinander parallel schaltbaren Gasaustrittsdüsen
DE3829664C1 (fr) * 1988-09-01 1990-01-18 Karl Dungs Gmbh & Co, 7060 Schorndorf, De
DE4407758A1 (de) 1993-03-11 1994-09-15 Vaillant Joh Gmbh & Co Atmosphärischer Vormisch-Gasbrenner
EP0657693A2 (fr) * 1993-12-09 1995-06-14 GoGas Goch GmbH & Co Brûleur à gaz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB230149A (en) * 1923-11-29 1925-03-02 George Helps Improvements in gas burners
CH314202A (de) * 1952-04-03 1956-05-31 Schweiz Gasapparatefabrik Solo Regulierbarer Gasbrenner mit mehreren sukzessive zueinander parallel schaltbaren Gasaustrittsdüsen
DE3829664C1 (fr) * 1988-09-01 1990-01-18 Karl Dungs Gmbh & Co, 7060 Schorndorf, De
DE4407758A1 (de) 1993-03-11 1994-09-15 Vaillant Joh Gmbh & Co Atmosphärischer Vormisch-Gasbrenner
EP0657693A2 (fr) * 1993-12-09 1995-06-14 GoGas Goch GmbH & Co Brûleur à gaz

Also Published As

Publication number Publication date
EP0908670B1 (fr) 2004-07-28

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