EP0190660A2 - Brûleur à air soufflé sous faible pression - Google Patents

Brûleur à air soufflé sous faible pression Download PDF

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Publication number
EP0190660A2
EP0190660A2 EP86101188A EP86101188A EP0190660A2 EP 0190660 A2 EP0190660 A2 EP 0190660A2 EP 86101188 A EP86101188 A EP 86101188A EP 86101188 A EP86101188 A EP 86101188A EP 0190660 A2 EP0190660 A2 EP 0190660A2
Authority
EP
European Patent Office
Prior art keywords
gas
burner
mixing tube
mixing
cross
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.)
Withdrawn
Application number
EP86101188A
Other languages
German (de)
English (en)
Other versions
EP0190660A3 (fr
Inventor
Hans Dr. Viessmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0190660A2 publication Critical patent/EP0190660A2/fr
Publication of EP0190660A3 publication Critical patent/EP0190660A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a gas forced draft burner with low pressure for boilers according to the preamble of the main claim.
  • Such a gas fan burner is known from DE-PS 2 525 305, while gas fan burners are generally known from VDI report No. 246, 1975, in particular pages 50-52.
  • DE-GM 80 25 338.9 referenced, the subject of which is, however, a burner with which both gas and oil can be burned after a simple switchover.
  • Known burners of this type in principle have a so-called mixing tube into which the gas feed tube protrudes centrally, with the gas cross-distribution over the mixing tube cross-section taking place radially between so-called baffle plates which are perforated to allow the incoming air to pass through and to mix with the cross-flowing gas.
  • the outflowing gas-air mixture forms a correspondingly long and concentrated flame with a high flow rate, which requires a correspondingly dimensioned combustion chamber of the boiler in question.
  • the diameter of the mixing tube is usually only a fraction (about 1/4 or 1/5) of the combustion chamber diameter or the combustion chamber door, which, in view of this, must be well heat-insulated to take into account the heat radiation from the flame. Due to the high pressure with which such burners are operated, they also generate considerable noise.
  • a plurality of slot channels are arranged on at least two circles concentric to the burner axis, which are increasingly inclined with respect to the burner axis in the direction of the circumference of the nozzle apparatus, in the direction of flow diverge.
  • the invention is based on the object ausghend from a G as-burner of the aforementioned type, these alter the effect that the formed gas-air mixture burns in the form of a surface flame directly behind the opening of the mixing tube and, accordingly, the burner having a blower low pressure and can be operated correspondingly low noise and which should also make it possible to adapt the mixing tube opening size to the cross-sectional size of the combustion chamber of a boiler equipped with such a burner.
  • blower manages with about 50 - 70% less pressure, like the blower for burners of the known type.
  • Essential for this solution is the total coverage of the outflow opening of the mixing tube and the arrangement of the gas distribution elements in the middle area of the mixing tube, so that there is a sufficiently long mixing section up to the burner membrane and the gas-air mixture can flow out over the whole area.
  • Any flame tubes bundling the mixture flow or the flame, which normally surround the mixing tube, or nozzle-like configurations according to DE-PS 2 525 305, are not necessary here, since an overall surface-burning flame is to be achieved, which to a certain extent is a relatively thin layer of flame "stands over the membrane ....
  • So-called surface burners are known in the area of atmospheric gas burners, but they generally consist of three or four individual burners, for example in the form of a tube or box, the gas outflow surface of the individual burners also being formed from fine-hole or fine-slot surfaces.
  • an area-like flame in the sense provided here cannot be achieved since, depending on the gas pressure, more or less burning individual flames form over the gas outflow openings of the burner surface, as in the case of the object according to DE-PS 2 525 305.
  • the mixing tube is, as it were, the self-supporting outer part of the entire burner, at the other end of which the fan is connected in a suitable manner directly, it is also necessary to have the mixing tube on its outer circumference in a known manner to be provided with a connection flange.
  • the connecting flange is advantageously arranged at the end of the mixing tube on the burner membrane side, which means that when such a burner is attached to a boiler, the mixing tube with most of its longitudinal extent is outside the burner chamber.
  • the cross-sectional size of the gas supply pipe protruding centrally into the mixing pipe is only 1-5% of the cross-sectional size of the mixing pipe, in contrast to previously known burners, where this ratio is about 20% .
  • the mixing tube with its connecting flange can advantageously be designed directly as a flange-lockable or swivel-lockable boiler lock door, the burner membrane forming the gas-cooled surface of the boiler lock door that is constantly gas-cooled on the inflow side.
  • the burner membrane forming the gas-cooled surface of the boiler lock door that is constantly gas-cooled on the inflow side. This means that except for one very small circumferential edge area the whole combustion chamber-side surface of the vessel closure door is formed by the burner membrane, so no other heat-affected FLAE - chen are left, which otherwise bedürften thermal insulation. Due to the constant air supply or gas-air mixture supply, however, the entire outflow area is subject to permanent cooling in relation to the flat flame, which makes thermal insulation of the boiler lock door unnecessary.
  • the fan manages with a much lower pressure, the whole thing is associated with a significantly lower noise level and a saving of additional energy for driving the fan. Since, as mentioned, the gas-air mixture continuously flows over the entire surface of the burner membrane, the gas burns to a certain extent "colder" and, as measurements have shown, the so-called NOx formation can also be significantly reduced.
  • a gas-permeable burner membrane 3 covering the entire opening cross section arranged, which consists of a suitable metal grid or metal mesh.
  • the mixing tube 2 is provided on its outer circumference with a connecting flange 4 and in the central region of the mixing tube 2, gas distribution lines 6, which are evenly distributed over the entire mixing tube cross section and are provided with gas outflow openings 5, are arranged, which are connected to the gas supply tube 7 and, in this exemplary embodiment, radially from the gas supply tube 7 stand out.
  • the connecting flange 4 is attached to the end of the mixing tube 2 on the burner membrane side.
  • an air distributor plate 8 corresponding to the mixer tube cross section is advantageously arranged in front of the gas distributor lines 6 in the mixing tube and is fastened either to the mixer tube 2 or to the gas supply line 7.
  • the gas supply pipe can also serve as a support for the ignition electrode 11 and an ionization electrode 12 at the same time.
  • the gas distributor lines can be provided with branch lines 6 ', as shown in FIG. 3 will.
  • the mixing tube 2 with its connecting flange 4 is designed as a pivotable lockable boiler lock door 9, the burner membrane 3 forming the gas-cooled and, on the other hand, heat-loaded surface of the boiler lock door 9 in relation to the combustion chamber 13 of the boiler in question. Since, as can be seen, only a small annular gap 14 remains free, all other heat insulation measures required on the boiler lock door itself can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP86101188A 1985-02-02 1986-01-30 Brûleur à air soufflé sous faible pression Withdrawn EP0190660A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853503553 DE3503553A1 (de) 1985-02-02 1985-02-02 Gas-geblaesebrenner mit geringer pressung
DE3503553 1985-02-02

Publications (2)

Publication Number Publication Date
EP0190660A2 true EP0190660A2 (fr) 1986-08-13
EP0190660A3 EP0190660A3 (fr) 1987-10-28

Family

ID=6261486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101188A Withdrawn EP0190660A3 (fr) 1985-02-02 1986-01-30 Brûleur à air soufflé sous faible pression

Country Status (2)

Country Link
EP (1) EP0190660A3 (fr)
DE (1) DE3503553A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388988B (de) * 1987-01-23 1989-09-25 Vaillant Gmbh Kessel mit in einer oeffnung befestigtem geblaesebrenner
NL1008233C2 (nl) * 1998-02-06 1999-08-09 Clysan D W Bv Gasbrander.
EP1026445A1 (fr) * 1999-02-08 2000-08-09 D.W. Clysan B.V. Brûleur à gaz

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283901B1 (fr) * 1987-03-17 1990-12-12 Viessmann Werke GmbH & Co. Brûleur à gaz à flamme plate

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808867C (de) * 1949-03-25 1951-07-19 Maschf Augsburg Nuernberg Ag Industriegasbrenner
FR1574404A (fr) * 1967-07-28 1969-07-11
FR2209439A5 (fr) * 1972-12-05 1974-06-28 Fritsche Heinrich
US3947233A (en) * 1971-04-26 1976-03-30 C. A. Sundberg Ab Free-burning equipment
DE2525305A1 (de) * 1975-06-06 1976-12-16 Pensenskij Kompressornyj Sawod Gasbrenner
DE2527073A1 (de) * 1975-06-18 1977-01-13 Pensenskij Kompressornyj Sawod Gasbrenner
US4082497A (en) * 1976-03-29 1978-04-04 Ex-Cell-O Corporation High capacity quiet burner for hot air heating system
DE3415946A1 (de) * 1983-05-19 1984-11-22 Saunier Duval Eau Chaude Chauffage - S.D.E.C.C., Montreuil-sous-Bois Gasbrenner mit vormischung von luft und gas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT310996B (de) * 1970-11-02 1973-10-25 Vaillant Joh Kg Durchlauferhitzer
BE780415A (fr) * 1971-04-26 1972-07-03 C A Sundberg A B Accessoires pour bruleurs a combustible gazeux
DE8025338U1 (de) * 1980-09-22 1984-05-03 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Oel- und gasbrenner zum einbau in heizungs- und dampferzeugungskessel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808867C (de) * 1949-03-25 1951-07-19 Maschf Augsburg Nuernberg Ag Industriegasbrenner
FR1574404A (fr) * 1967-07-28 1969-07-11
US3947233A (en) * 1971-04-26 1976-03-30 C. A. Sundberg Ab Free-burning equipment
FR2209439A5 (fr) * 1972-12-05 1974-06-28 Fritsche Heinrich
DE2525305A1 (de) * 1975-06-06 1976-12-16 Pensenskij Kompressornyj Sawod Gasbrenner
DE2527073A1 (de) * 1975-06-18 1977-01-13 Pensenskij Kompressornyj Sawod Gasbrenner
US4082497A (en) * 1976-03-29 1978-04-04 Ex-Cell-O Corporation High capacity quiet burner for hot air heating system
DE3415946A1 (de) * 1983-05-19 1984-11-22 Saunier Duval Eau Chaude Chauffage - S.D.E.C.C., Montreuil-sous-Bois Gasbrenner mit vormischung von luft und gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388988B (de) * 1987-01-23 1989-09-25 Vaillant Gmbh Kessel mit in einer oeffnung befestigtem geblaesebrenner
NL1008233C2 (nl) * 1998-02-06 1999-08-09 Clysan D W Bv Gasbrander.
EP1026445A1 (fr) * 1999-02-08 2000-08-09 D.W. Clysan B.V. Brûleur à gaz

Also Published As

Publication number Publication date
DE3503553A1 (de) 1986-08-07
EP0190660A3 (fr) 1987-10-28
DE3503553C2 (fr) 1987-06-19

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