EP0865590B1 - Atmosphärischer gasbrenner - Google Patents

Atmosphärischer gasbrenner Download PDF

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Publication number
EP0865590B1
EP0865590B1 EP97941865A EP97941865A EP0865590B1 EP 0865590 B1 EP0865590 B1 EP 0865590B1 EP 97941865 A EP97941865 A EP 97941865A EP 97941865 A EP97941865 A EP 97941865A EP 0865590 B1 EP0865590 B1 EP 0865590B1
Authority
EP
European Patent Office
Prior art keywords
gas
injector arrangement
burner according
gas burner
mixture
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.)
Expired - Lifetime
Application number
EP97941865A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0865590A1 (de
Inventor
Juergen Stoschek
Marcus Bienzle
Michael Jantzer
Beate Maucher
Thomas-Eckart Frieling
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 EP0865590A1 publication Critical patent/EP0865590A1/de
Application granted granted Critical
Publication of EP0865590B1 publication Critical patent/EP0865590B1/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
    • F23D14/02—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
    • 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
    • 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
    • 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
    • F23D14/02—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
    • 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
    • F23D14/72—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
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/108—Flame diffusing means with stacked sheets or strips forming the outlets

Definitions

  • the invention is based on an atmospheric gas burner for heaters, especially water heaters, according to the genus of the main claim.
  • An atmospheric gas burner is already known from EP 377 233 A1 with a plurality of burner elements lying side by side known, each burner element an injector arrangement, one downstream of the injector arrangement Deflection area and an adjoining mixture distribution space having.
  • the injector arrangements of the individual Burner elements run horizontally and parallel to Location of the burner plate.
  • a gas burner with two adjacent injector arrangements, those in front of a burner plate Lead mixture distribution space is apparent from DE-OS 2 318 658.
  • the injector arrangements are each vertical arranged to the burner plate. This arrangement eliminates a deflection area.
  • a burner element with a horizontally arranged injector arrangement further emerges from NL 65 08 630. Also here each injector arrangement is a mixture distribution space downstream, which is in the flow direction of Fuel gas-air mixture is located in front of the burner plate.
  • Burner elements also arranged horizontally Injector arrangement, a deflection area and an adjoining Mixture distribution room go out of the DE-AS 1 274 055, here also each injector arrangement a deflection area and a mixture distribution space assigned.
  • the arrangement offers a similar arrangement NL 29 32 70.
  • EP 473 826 A1 is a burner plate known for a surface gas burner in which the burner plate has finned sheets through the cooling tubes are led.
  • the arrangement according to the invention with the features of The main claim has the advantage that the manufacture of a compact atmospheric gas burner with low height is possible by flame cooling and complete superstoichiometric premixing (air ratio ⁇ > 1) of the fuel gas with the combustion air low Pollutant emissions, especially low NOx and CO values, having.
  • air ratio ⁇ > 1 air ratio of the fuel gas with the combustion air low Pollutant emissions, especially low NOx and CO values, having.
  • In the deflection area of the gas burner takes place through the swirling of the fuel gas-air mixture an additional one Mixing instead, so that the flow channels in can be chosen shorter according to the injector arrangement can.
  • An advantageous alternative to cylindrical trained flow channels consists in the formation of elongated flow channels, those in the inlet area several nozzles are assigned. With that Flow resistance, sensitivity to Positioning tolerances and manufacturing costs continue reduced.
  • the distinctive structuring of the burner plate can be achieved by not between two set back sheet metal fins one or more recessed or shortened rib provided is.
  • FIG. 1 shows a Longitudinal section of the gas burner according to the invention
  • Figure 2 2 shows a section of the gas burner along the line A-A in FIG. 1
  • 3 shows an enlarged section of the burner plate
  • 4 a top view of the burner plate
  • FIGS. 5 a further embodiments of an injector.
  • FIG. 1 shows a gas burner 10 with a nozzle 12 having gas supply device 14 which is opposite a horizontally aligned injector assembly 16 of the Gas burner 10 is so spaced in the flow direction that the nozzles 12 each have a cylindrical shape at a distance Flow channel 18 lies opposite, the nozzles 12 on Height of the central axes of the flow channels 18 arranged are.
  • the central axes of the flow channels 18 run in the essentially rectilinear, the flow cross-section up to an extension 20 designed as an inlet Inlet area is substantially constant.
  • the relationship Length to diameter of those arranged in the injector 16 Flow channels 18 is ⁇ 4: 1, deviating from known ones Injector arrangements for gas burners in which the factor is 10 is up to 12.
  • a in the flow direction of the fuel gas-air mixture connected to the injector arrangement 16 90 ° deflection area 22 goes to one side funnel-shaped mixture distributor 24 above, on whose outlet is opposite the mixture distributor 24 sealed burner plate 26 is arranged.
  • the with fasteners 28 against the Mixer distributor 24 fixed burner plate 26 is with slats or ribs 30, 31 of different lengths (FIG. 3) constructed, which by a cooling coil 32 with each other are connected and between them channels or column 34 for limit the passage of the fuel gas-air mixture, the on the side of the burner plate 26 facing the combustion chamber is flammable.
  • the ribs 30, 31 made of stainless steel are in good thermal contact with the copper existing cooling pipe coil 32 and are through this too connected to a rigid structural unit.
  • the width a of the column 34 is smaller than the so-called extinguishing distance, so that flames are not in the burner plate 26 or in front of it horizontal mixture distribution zone can strike back.
  • the burner plate 26 is designed so that two shorter ribs 31 each between two longer ribs 30 stand.
  • the arrangement is such that the edges 36 of the shorter ribs 31 opposite the combustion chamber the edges 38 of the longer ribs 30 are set back. This results in on the wall on the combustion chamber side Burner plate 26 a heavily stepped Surface structuring with wide spaces 40 that laterally through wall areas 42 of the longer ribs 30 are limited.
  • the burner plate 26 is laterally by in the combustion chamber projecting end fins 44, 46 completed a flashover of the flame created during combustion prevent.
  • Figure 4 shows a plan view of the Burner plate 26 and leaves the course of the cooling coil detect.
  • the gas burner 10 operates in the following way:
  • Fuel gas is introduced into the flow channels 18 via the gas nozzles 12 injected the injector assembly 16, wherein by the Combustion gas flow ambient air is entrained.
  • the entire Burner system (nozzle pressure, injectors, deflection area, Burner plate etc.) is designed so that the for a Combustion with excess air ( ⁇ > 1) necessary Combustion air already completely with the Primary air intake is provided (so-called Vormischbrennerkal).
  • Vormischbrennerkal Vormischbrennerkal
  • the designed as an enema Extension 20 at the inlet of the flow channels 18 allows low-friction entry of the combustion air into the Flow channel 18. That in the flow channels 18th fuel gas-air mixture forming meets the deflection area 22 where there is further mixing by swirling of the fuel gas comes with the combustion air.
  • By the funnel-shaped adjoining the deflection region 22 expanding mixture distributor 24 takes place in addition to the distribution the mixture is homogenized; beyond that by reducing the speed a high proportion of the dynamic pressure necessary for the
  • the burner plate 26 After the fuel gas-air mixture the burner plate 26 has reached, the mixture reacts between or to the downstream edges 36, 38 of the ribs 30, 31 below Flame formation, whereby heat of reaction from the flame roots via the ribs 30, 31 to the water to be heated in the Pipe coil 32 arrives.
  • the flame roots are here particularly well cooled because they also touch the sides Have wall areas 42 of the ribs 30.
  • the thermal conductivity the ribs 30, 31 is by design and / or Material selection matched to the burner output so that their surface temperature is, for example, 400 ° C established.
  • FIG. 5 shows a further injector arrangement, in which the cylindrical flow channels 18 through elongated flow channels are replaced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP97941865A 1996-10-04 1997-09-04 Atmosphärischer gasbrenner Expired - Lifetime EP0865590B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641040 1996-10-04
DE19641040A DE19641040A1 (de) 1996-10-04 1996-10-04 Atmosphärischer Gasbrenner
PCT/DE1997/001938 WO1998015781A1 (de) 1996-10-04 1997-09-04 Atmosphärischer gasbrenner

Publications (2)

Publication Number Publication Date
EP0865590A1 EP0865590A1 (de) 1998-09-23
EP0865590B1 true EP0865590B1 (de) 2002-05-22

Family

ID=7807918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97941865A Expired - Lifetime EP0865590B1 (de) 1996-10-04 1997-09-04 Atmosphärischer gasbrenner

Country Status (6)

Country Link
EP (1) EP0865590B1 (ja)
JP (1) JP2000502436A (ja)
KR (1) KR19990071702A (ja)
DE (2) DE19641040A1 (ja)
ES (1) ES2178002T3 (ja)
WO (1) WO1998015781A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954811A1 (de) * 1999-11-13 2001-05-17 Bosch Gmbh Robert Lamellenbrenner
DE10008549B4 (de) * 2000-02-24 2004-03-25 Robert Bosch Gmbh Brennerkopf mit Metallplatte und Rohrabschnitten für eine Kühlflüssigkeit
DE20109170U1 (de) * 2001-06-05 2002-10-10 Viessmann Werke Kg Atmosphärischer Gasbrenner
DE10213132B4 (de) * 2002-03-23 2005-06-02 Robert Bosch Gmbh Gasbrenner
DE202007018472U1 (de) 2007-03-31 2008-08-21 Robert Bosch Gmbh Vormischender Gasbrenner
TWI611146B (zh) * 2016-09-26 2018-01-11 Grand Mate Co Ltd 燃燒器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377233A1 (en) * 1989-01-06 1990-07-11 Remeha Fabrieken B.V. Low NOx atmospheric gas burner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL293270A (ja) *
DE1274055B (de) * 1963-02-14 1968-08-01 Vaillant Joh Kg Aus mehreren Einzelbrennern bestehender Gruppenbunsenbrenner, insbesondere fuer Gaswassererhitzer
NL6508630A (ja) * 1965-07-05 1967-01-06
NL168605C (nl) 1972-04-17 1982-04-16 Radiation Ltd Warmteuitwisselingssamenstel.
DE8120009U1 (de) * 1981-07-09 1982-12-30 Robert Bosch Gmbh, 7000 Stuttgart Atmosphaerischer allgasbrenner, insbesondere fuer haushaltgeraete
NL193596C (nl) * 1989-03-14 2000-03-02 Rendamax Bv Branderkop voor een gasbrander van het type oppervlaktebrander.
DE4428097A1 (de) * 1994-08-09 1996-02-22 Bosch Gmbh Robert Verfahren zum Betreiben eines Heizgerätes sowie Heizgerät zur Durchführung des Verfahrens
DE4445460A1 (de) * 1994-12-20 1996-06-27 Bosch Gmbh Robert Gasbrenner für Heizgeräte, insbesondere Wassererhitzer
DE19540772A1 (de) * 1995-11-02 1997-05-07 Buderus Heiztechnik Gmbh Atmosphärischer Gasbrenner
DE29604471U1 (de) * 1996-03-11 1996-05-23 Buderus Heiztechnik Gmbh, 35576 Wetzlar Vormischgasbrenner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377233A1 (en) * 1989-01-06 1990-07-11 Remeha Fabrieken B.V. Low NOx atmospheric gas burner

Also Published As

Publication number Publication date
KR19990071702A (ko) 1999-09-27
EP0865590A1 (de) 1998-09-23
DE19641040A1 (de) 1998-04-23
JP2000502436A (ja) 2000-02-29
DE59707327D1 (de) 2002-06-27
WO1998015781A1 (de) 1998-04-16
ES2178002T3 (es) 2002-12-16

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