EP0601018B1 - Bruleur a gaz, notamment pour gaz liquefie - Google Patents

Bruleur a gaz, notamment pour gaz liquefie Download PDF

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Publication number
EP0601018B1
EP0601018B1 EP92918371A EP92918371A EP0601018B1 EP 0601018 B1 EP0601018 B1 EP 0601018B1 EP 92918371 A EP92918371 A EP 92918371A EP 92918371 A EP92918371 A EP 92918371A EP 0601018 B1 EP0601018 B1 EP 0601018B1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
collar
secondary air
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.)
Expired - Lifetime
Application number
EP92918371A
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German (de)
English (en)
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EP0601018A1 (fr
Inventor
Josef Brandtner
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.)
Philipp Kreis & Co Truma-Geratebau GmbH
Original Assignee
Philipp Kreis & Co Truma-Geratebau 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 Philipp Kreis & Co Truma-Geratebau GmbH filed Critical Philipp Kreis & Co Truma-Geratebau GmbH
Publication of EP0601018A1 publication Critical patent/EP0601018A1/fr
Application granted granted Critical
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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
    • F23D14/08—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 axial outlets at the burner head

Definitions

  • the invention relates to a gas burner, in particular for liquefied petroleum gas, for installation in a flame tube or a combustion chamber housing of a heat exchanger for space heaters or the like, according to the preamble of patent claim 1.
  • a burner mouthpiece is arranged coaxially in a flame tube and connected to a mixing tube for the gas and first air supply.
  • a second air duct is formed around this burner mouthpiece, for which purpose holes are provided in an annular surface surrounding the mouthpiece, in order to supply the necessary second air to the burner flame through the air jets emerging therefrom. Since the actual burning surface of the mouthpiece is arranged higher than the second air holes and also the air jets are steered upwards relatively steeply by an upstanding cylinder wall, the gas flame is supplied with sufficient secondary air only in its edge area, while in The core of the flame lacks secondary air.
  • the mixing tube leading from the gas nozzle to the burner mouthpiece is a finned hose with a constant diameter and only within the mouthpiece is a short funnel-shaped extension up to the metal sieve, so that the mixing action in this mixing tube is essentially achieved only by the surface ribbing in the interior of the tube .
  • Patent Abstracts of Japan Vol. 7 No. 157 also describes a burner with a recessed arrangement of the focal surface compared to the second air nozzles, the nozzle openings also being perpendicular to the burner radius passing through them.
  • the invention is based on the object of creating a gas burner which ensures increased combustion performance by means of an improved air supply.
  • the flame is adequately supplied with secondary air, thereby achieving optimal combustion. Because the air jets now only sweep over the flame surface slightly above the flame roots, the secondary air influences the flame over the full cross-section and not just its outer areas.
  • the at a predetermined blow angle aligned second air nozzles also promote flame stabilization without interfering with flame development. The fact that the secondary air comes completely into contact with the flame avoids that more or less heated air rises with the combustion gases in the edge region of the flame tube and thus impairs unmixed the heat transfer through the heating surfaces of the heat exchanger.
  • the combustion performance is also increased by the injector of the mixing tube according to the invention for the primary air, because its graded expansion ensures a more intensive mixing effect with a more uniform distribution of the gas-air mixture over the entire combustion surface.
  • the interaction of this injector with the secondary air flow resulting from the deepening of the focal surface also contributes to a further optimization of the combustion.
  • This secondary air flow not only offers the advantage that this air portion is led deep into the flame core, but also has the result that a swirl is generated in the flame, which contributes to further intensifying the mixing in the combustion chamber.
  • a gas burner 3 formed by burner glasses 4 is placed on an end edge 2 of a burner tube 1 and fastened thereon.
  • a glasses base 5 in the form of an annular surface forms the support on the front edge 2.
  • a focal surface 7 of the burner is recessed relative to the base of the glasses, for example by at least three to twenty millimeters, for which purpose a glasses cylinder 6 establishes the connection to the base.
  • the focal surface itself has, in a known manner, a metal sieve 8 and a ring of holes 9, which ring of holes can form a fitting with the cylinder of the glasses.
  • This angle of attack can be changed between 50 ° and 75 ° without noticeably impairing the effect of the air jet with respect to the flame, as long as the focal surface 7 covered by the ring of holes 9 is covered as completely as possible by the air jets.
  • the flame core in the area of the free metal grid 8 is kept free from the direct action of the air jets.
  • the mixing tube sleeve 17 is formed at the end of an injector funnel 16, which in turn continues an injector center piece 19 and has an input extension 20 at the other end, through which the gas flowing out of a gas nozzle 23 enters the injector together with the first air and is mixed.
  • the gas nozzle is fed through a gas supply line 24 via a valve 25, for example a solenoid valve.
  • the mixing intensity in the mixing tube largely depends on the section and taper ratios of the individual mixing tube parts.
  • the extensions provided in the direction of flow have proven to be expedient for 20 ° to 85 °, for 1 ° to 30 ° and for 30 ° to 150 °.
  • the aspect ratios can also be changed in a range of up to 20%.
  • the burner tube shown cylindrically in the exemplary embodiment can of course also have a rectangular, for example square, cross section.
  • the burner tube base 26 is open for the entry of the first and second air. If the air supply is forced, for example by means of a blower, then this bottom opening is connected to it in a suitable manner.
  • a flame tube base 30 is placed on a flange ring 27, to which a flame tube 31 connects.
  • the flame tube base is further expanded by an exhaust manifold 32.
  • the ignition electrodes 34 can be seen in FIG. 1 and the associated passage openings 35 in FIG. 3.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

Un brûleur à gaz, notamment pour gaz liquéfié, qui peut être incorporé dans le tube de chauffage ou le carter de la chambre de combustion d'un échangeur de chaleur pour des appareils de chauffage de locaux et analogue, comporte une tête de brûleur (3) disposée coaxialement dans le tube de chauffage (31) et pourvue d'ajutages d'air d'appoint dirigés vers la surface de combustion (1). La surface de combustion (7) du brûleur (3) est en retrait par rapport aux ajutages d'air d'appoint (10). De préférence, ces ajutages sont formés dans la base (5) d'une lunette de brûleur (4) qui peut être posée sur un tube de brûleur (1), et la surface de combustion (7) est en retrait par rapport à la base de la lunette grâce à la présence d'un cylindre de lunette (6).

Claims (8)

  1. Brûleur à gaz, notamment pour gaz liquéfié, comprenant une tête de brûleur (3) pouvant être disposée d'une manière coaxiale dans un tube de flamme (31) ou une enveloppe de chambre de combustion d'un échangeur thermique, pour installations de chauffage de locaux et analogues, et comprenant une surface de combustion (7), un tube mélangeur (15), relié à cette surface de combustion et présentant une ouverture d'air primaire et une buse de gaz (23) à l'entrée (20) du tube mélangeur, et une amenée d'air secondaire réalisée autour de la tête de brûleur (23) et formée de buses d'air secondaire (10) disposées en cercle et orientées vers la surface de combustion, la surface de combustion (7) du brûleur (3) étant en retrait vis-à-vis des buses d'air secondaire (10), caractérisé en ce que les buses d'air secondaire (10) sont décalées angulairement, en ce qui concerne leurs orifices de buse (11), d'un angle d'orientation de 50° à 75° vis-à-vis du rayon passant par le centre de l'orifice de buse.
  2. Brûleur à gaz selon la revendication 1, caractérisé en ce que l'angle d'orientation de l'orifice de buse (11) est égal à 62,5°.
  3. Brûleur à gaz selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu une lunette de brûleur (4), posée sur un tube de brûleur (1), dans la base de lunette (5) de laquelle les buses d'air secondaire (10) sont réalisées et en ce que la surface de combustion (7) est en retrait vis-à-vis de la base de lunette grâce à la présence d'un cylindre de lunette (6).
  4. Brûleur à gaz selon la revendication 3, caractérisé en ce que la lunette de brûleur (4) est montée, par son cylindre de lunette (6), dans un manchon (17) du tube mélangeur (15).
  5. Brûleur à gaz selon la revendication 3 ou 4, caractérisé en ce que la surface de combustion (7) est en retrait, de trois à vingt millimètres, vis-à-vis de la base de lunette (5).
  6. Brûleur à gaz selon l'une des revendications 3 à 5, caractérisé en ce que les buses d'air secondaire (10) comportent des orifices de buse (11) orientés d'une manière approximativement perpendiculaire à la base de lunette (5) et en ce que leurs recouvrements de buse (12) se dressent sur la base de lunette (5) suivant un angle de 30° environ.
  7. Brûleur à gaz selon l'une des revendications 1 à 6, caractérisé en ce que le tube mélangeur (15) comprend un entonnoir d'injecteur (16) d'une longueur l1 = 20 à 30 mm et un angle d'évasement α = 20 à 85° et une partie intermédiaire d'injecteur (19) d'une longueur l2 = 50 à 70 mm et un angle d'évasement β = 1° à 30°.
  8. Brûleur à gaz selon la revendication 7, caractérisé en ce que l'évasement d'entrée a une longueur de 6 à 10 mm et présente un évasement angulaire γ = 30° à 150° orienté dans le sens opposé au sens d'écoulement.
EP92918371A 1991-09-05 1992-08-25 Bruleur a gaz, notamment pour gaz liquefie Expired - Lifetime EP0601018B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19914129552 DE4129552A1 (de) 1991-09-05 1991-09-05 Gasbrenner, insbesondere fuer fluessiggas
DE4129552 1991-09-05
PCT/EP1992/001952 WO1993005342A1 (fr) 1991-09-05 1992-08-25 Bruleur a gaz, notamment pour gaz liquefie

Publications (2)

Publication Number Publication Date
EP0601018A1 EP0601018A1 (fr) 1994-06-15
EP0601018B1 true EP0601018B1 (fr) 1997-11-26

Family

ID=6439936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918371A Expired - Lifetime EP0601018B1 (fr) 1991-09-05 1992-08-25 Bruleur a gaz, notamment pour gaz liquefie

Country Status (5)

Country Link
EP (1) EP0601018B1 (fr)
CZ (1) CZ287712B6 (fr)
DE (2) DE4129552A1 (fr)
HU (1) HU216592B (fr)
WO (1) WO1993005342A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204688B2 (en) 2001-07-19 2007-04-17 Lg Electronics Inc. Gas burner for dryer
GB2403792A (en) * 2003-07-08 2005-01-12 Aeromatix Ltd Gas burner for use with a cylindrical heat exchanger
DE202004015610U1 (de) * 2004-10-08 2005-02-24 Gastec Technology B.V. Gas-Brenner-Einrichtung für eine Brennmittelimitat-Feuereinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1556383A (en) * 1976-12-23 1979-11-21 Nu Way Heating Plants Ltd Burners for gaseous fuels
DE3327140A1 (de) * 1983-07-27 1985-02-14 Philipp Kreis GmbH & Co Truma-Gerätebau, 8000 München Gasbrenner, insbesondere fuer fluessiggas, zum einbau in einen waermetauscher
FR2589555B1 (fr) * 1985-11-06 1989-11-10 Gaz De France Bruleur a gaz a air souffle

Also Published As

Publication number Publication date
EP0601018A1 (fr) 1994-06-15
WO1993005342A1 (fr) 1993-03-18
HU216592B (hu) 1999-07-28
CZ287712B6 (cs) 2001-01-17
DE59209044D1 (de) 1998-01-08
DE4129552A1 (de) 1993-03-11
HUT68877A (en) 1995-08-28
HU9400640D0 (en) 1994-07-28
CZ50494A3 (en) 1994-08-17

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