EP0314897A1 - Brûleur à gaz avec prémélange et excès d'air - Google Patents

Brûleur à gaz avec prémélange et excès d'air Download PDF

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Publication number
EP0314897A1
EP0314897A1 EP88114596A EP88114596A EP0314897A1 EP 0314897 A1 EP0314897 A1 EP 0314897A1 EP 88114596 A EP88114596 A EP 88114596A EP 88114596 A EP88114596 A EP 88114596A EP 0314897 A1 EP0314897 A1 EP 0314897A1
Authority
EP
European Patent Office
Prior art keywords
burner
plate
housing
gas
burner plate
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
EP88114596A
Other languages
German (de)
English (en)
Other versions
EP0314897B1 (fr
Inventor
Theo Dipl.-Phys. Jannemann
Hans Berg
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.)
EON Ruhrgas AG
Original Assignee
Ruhrgas AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6813638&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0314897(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ruhrgas AG filed Critical Ruhrgas AG
Priority to AT88114596T priority Critical patent/ATE60420T1/de
Publication of EP0314897A1 publication Critical patent/EP0314897A1/fr
Application granted granted Critical
Publication of EP0314897B1 publication Critical patent/EP0314897B1/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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2211/00—Thermal dilatation prevention or compensation

Definitions

  • the invention relates to an over-stoichiometric premixing gas burner for gas heaters, in particular with a blower-assisted mixture supply, with a perforated, uncooled burner plate forming the boundary between the mixture chamber of the burner housing and the combustion chamber of the heater.
  • the uncooled burner plate at which the combustion or flame formation of the fuel gas / air mixture passing through the perforation occurs, occurs as a result of the strong alternating temperatures , high mechanical stresses in the burner.
  • water cooling of the burner plate which one would like to avoid if possible because of the manufacturing costs, all flat designs of uncooled metallic burner plates have so far led to stress cracks due to the high mechanical stresses that have occurred. For this reason, the burner design has hitherto been limited to cylindrical embodiments of the uncooled burner plates, with which the problem of high mechanical stresses occurring could be mastered
  • the invention has for its object to provide a burner construction with which the problem of thermal stresses and stress cracks can be mastered even with desirable, non-cylindrical design of uncooled burner plates.
  • a rectangular burner plate is slightly curved like a cylinder shell and is held along all four edges in the burner housing by a frame-like border, in which the burner plate can be extended in all directions and which encloses the edges of the burner plate in a non-kickback manner . Due to the non-fixed, but movable design of the all-round, mixed-density enclosure of the burner plate, the uncooled burner plate can expand unhindered in length and width in the event of strong temperature changes. This avoids stress cracks in the burner even when the burner plate is not cylindrical.
  • a similarly curved perforated flow resistance plate is arranged at a short distance below the burner plate and is also extensively movable in its length in all directions in the burner housing, so that this flow resistance plate, to which the heat radiation of the highly heated, is also exposed Burner plate acts, no thermal stress and no risk of stress cracking.
  • FIG. 1 shows a side view of the gas burner, partly in longitudinal section
  • FIG. 2 shows a cross section along the line II-II in FIG. 1.
  • the gas burner contains a base plate 1 with a mixing channel 2, into which the fuel gas is introduced with a gas nozzle and through which the superstoichiometrically premixed fuel gas / air mixture is fed to the burner with the support of an air blower.
  • a burner frame 4 with two upright housing walls 5 is arranged on the base plate 1 with the interposition of a seal 3.
  • a perforated, uncooled burner plate 6 forms a mixture chamber 7 of the burner above the base plate 1 and between the housing walls 5 and delimits the mixture chamber with respect to the combustion chamber of a gas heater (not shown in more detail).
  • the burner plate 6 which is rectangular in plan, is slightly curved in the manner of a cylindrical shell and is fastened along all four edges in the burner housing with a frame-like border, which keeps the burner plate movable in lengthwise directions in its own right, and thereby the edges of the burner plate to form a non-return-proof seal of the mixture chamber 7 of the burner bordering the combustion chamber of the gas heater.
  • a seal 8 For the movable, non-return sealed enclosure of the fuel plate in the illustrated embodiment on the burner frame 4, with the interposition of a seal 8, holding strips 9 are arranged, which have receiving grooves 10 into which the straight longitudinal sides of the burner plate 6 protrude.
  • the arcuate end faces of the burner plate 6 are held by arcuate groove-like recesses in the burner housing, preferably on the inside thereof by arcuate projections 11 on the housing walls 5 of the burner frame 4 and on the outside by loosely fitting clamps 12.
  • arcuate projections 11 on the housing walls 5 of the burner frame 4 and on the outside by loosely fitting clamps 12.
  • In the receiving grooves 10 or between the projections 11 and the Clamps 12 allow expansion of the burner plate 6 on all sides with changing temperature effects, as a result of which thermal stresses and stress cracks in the burner are avoided.
  • soft fire-resistant seals 18 are furthermore inserted between the clamps 12 and the burner plate 6 or in the arc-shaped groove-like recesses of the burner housing in order to ensure the gas-tight sealing of the burner plate on its arc-shaped end faces with respect to the mixture space 7.
  • a perforated flow resistance plate 13 of the same arch is arranged at a short distance below the burner plate 6.
  • This plate 13 serves, on the one hand, to distribute the mixture flow over the surface of the burner plate 6 and, through the intended generation of a flow resistance, which is overcome with the blower-assisted mixture supply, and through the associated high pressure loss, also performs the task of vibration damping. This prevents vibrations of the flames on the outside of the burner plate 6 through the burner plate from generating feedback in the mixture chamber 7, which cause undesired burner whistling.
  • the flow resistance plate 13, which can heat up due to heat radiation from the highly heated burner plate 6, is held so that it can be extended in all directions.
  • the arcuate end faces of the flow resistance plate 13 are held between the projections 11 supporting the burner plate 6 and additionally arcuate projections 14 arranged on the housing walls 5.
  • the straight long sides of the flow resistance Stand plate 13 engage in grooves 15, which are formed between the holding strips 9 and an upwardly offset section of the burner frame 4.
  • the all-round extensible fastening also of the flow resistance plate 13 supports the avoidance of thermal stresses and stress cracks in the burner.
  • the upwardly displaced section of the burner frame 4 is designed as a distribution plate 16 which extends over the mixture path of the burner housing and which additionally serves to distribute the mixture flow flowing through the mixing channel 2 at one end of the base plate 1 evenly over the entire length of the burner housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP88114596A 1987-10-31 1988-09-07 Brûleur à gaz avec prémélange et excès d'air Expired - Lifetime EP0314897B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114596T ATE60420T1 (de) 1987-10-31 1988-09-07 Ueberstoechiometrisch vormischender gasbrenner fuer gasheizgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8714532U DE8714532U1 (fr) 1987-10-31 1987-10-31
DE8714532U 1987-10-31

Publications (2)

Publication Number Publication Date
EP0314897A1 true EP0314897A1 (fr) 1989-05-10
EP0314897B1 EP0314897B1 (fr) 1991-01-23

Family

ID=6813638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114596A Expired - Lifetime EP0314897B1 (fr) 1987-10-31 1988-09-07 Brûleur à gaz avec prémélange et excès d'air

Country Status (3)

Country Link
EP (1) EP0314897B1 (fr)
AT (1) ATE60420T1 (fr)
DE (2) DE8714532U1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375998A (en) * 1991-11-14 1994-12-27 Witteveen; Gustaaf J. Low NOx premix gas burner
EP0774623A1 (fr) * 1995-11-17 1997-05-21 Dejatech B.V. Brûleur à surface de sortie segmentée
NL1003311C2 (nl) * 1996-06-10 1997-12-17 Radson Alutherm Nv Vlamverdeelinrichting bestemd voor een brander van een warmwatertoestel.
EP0844435A1 (fr) * 1996-11-26 1998-05-27 Worgas Bruciatori S.R.L. Brûleur à gaz
NL1018054C2 (nl) * 2001-05-11 2002-11-12 Dejatech Bv Samenstel van een brander en een branderbehuizing.
EP2037175B1 (fr) 2007-09-12 2016-11-23 Polidoro S.p.A. Brûleur à prémélange
WO2024013046A1 (fr) * 2022-07-11 2024-01-18 Bekaert Combustion Technology B.V. Brûleur à gaz à prémélange et procédé permettant de fabriquer un brûleur à gaz à prémélange

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109716023B (zh) * 2016-09-13 2021-06-18 贝卡尔特燃烧技术股份有限公司 预混气体燃烧器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980104A (en) * 1958-01-22 1961-04-18 Hupp Corp Radiant heaters
AT274298B (de) * 1967-08-17 1969-09-10 Caloric Corp Gasbeheizter Infrarotstrahler
DE1529217A1 (de) * 1965-08-19 1969-12-04 Metaalfab Inalfa Nv Vorrichtung zum Verbrennen eines Gases
DE2408792A1 (de) * 1973-02-26 1974-09-05 Rodiac Gasbrenner
DE2613633A1 (de) 1975-03-27 1976-10-07 Burnham Europa Bv Gasbrenner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980104A (en) * 1958-01-22 1961-04-18 Hupp Corp Radiant heaters
DE1529217A1 (de) * 1965-08-19 1969-12-04 Metaalfab Inalfa Nv Vorrichtung zum Verbrennen eines Gases
AT274298B (de) * 1967-08-17 1969-09-10 Caloric Corp Gasbeheizter Infrarotstrahler
DE2408792A1 (de) * 1973-02-26 1974-09-05 Rodiac Gasbrenner
DE2613633A1 (de) 1975-03-27 1976-10-07 Burnham Europa Bv Gasbrenner

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375998A (en) * 1991-11-14 1994-12-27 Witteveen; Gustaaf J. Low NOx premix gas burner
EP0774623A1 (fr) * 1995-11-17 1997-05-21 Dejatech B.V. Brûleur à surface de sortie segmentée
NL1001688C2 (nl) * 1995-11-17 1997-05-21 Furigas Assen Bv Brander met gesegmenteerd branderdek.
NL1003311C2 (nl) * 1996-06-10 1997-12-17 Radson Alutherm Nv Vlamverdeelinrichting bestemd voor een brander van een warmwatertoestel.
EP0816758A1 (fr) * 1996-06-10 1998-01-07 N.V. Radson-Alutherm Dispositif de répartition des flammes pour un brûleur d'un appareil à eau chaude
EP0844435A1 (fr) * 1996-11-26 1998-05-27 Worgas Bruciatori S.R.L. Brûleur à gaz
NL1018054C2 (nl) * 2001-05-11 2002-11-12 Dejatech Bv Samenstel van een brander en een branderbehuizing.
EP1256760A1 (fr) * 2001-05-11 2002-11-13 Dejatech B.V. Assemblage comprenant un brûleur et son boítier
EP2037175B1 (fr) 2007-09-12 2016-11-23 Polidoro S.p.A. Brûleur à prémélange
WO2024013046A1 (fr) * 2022-07-11 2024-01-18 Bekaert Combustion Technology B.V. Brûleur à gaz à prémélange et procédé permettant de fabriquer un brûleur à gaz à prémélange
NL2032443B1 (en) * 2022-07-11 2024-01-23 Bekaert Combustion Tech Bv Premix gas burner and method for manufacturing a premix gas burner

Also Published As

Publication number Publication date
EP0314897B1 (fr) 1991-01-23
ATE60420T1 (de) 1991-02-15
DE3861659D1 (de) 1991-02-28
DE8714532U1 (fr) 1987-12-10

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