EP0967436B1 - Brûleur en cascade - Google Patents

Brûleur en cascade Download PDF

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Publication number
EP0967436B1
EP0967436B1 EP19990108866 EP99108866A EP0967436B1 EP 0967436 B1 EP0967436 B1 EP 0967436B1 EP 19990108866 EP19990108866 EP 19990108866 EP 99108866 A EP99108866 A EP 99108866A EP 0967436 B1 EP0967436 B1 EP 0967436B1
Authority
EP
European Patent Office
Prior art keywords
burner
air
gas
inlet
accordance
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
EP19990108866
Other languages
German (de)
English (en)
Other versions
EP0967436A2 (fr
EP0967436A3 (fr
Inventor
Thomas Hartmann
Uwe Wöllert
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.)
Truma Geraetetechnik GmbH and Co KG
Original Assignee
Truma Geraetetechnik GmbH and Co KG
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 Truma Geraetetechnik GmbH and Co KG filed Critical Truma Geraetetechnik GmbH and Co KG
Publication of EP0967436A2 publication Critical patent/EP0967436A2/fr
Publication of EP0967436A3 publication Critical patent/EP0967436A3/fr
Application granted granted Critical
Publication of EP0967436B1 publication Critical patent/EP0967436B1/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
    • 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

Definitions

  • the invention relates to a gas burner system with at least two burner bodies according to the preamble of claim 1.
  • Such an atmospheric gas burner system is known (DE 87 08 194 U1). It has a plurality of burner bodies with an inlet opening at a mixer, in the z. As LPG or natural gas and primary air can be introduced, and a Brennauslledge for discharging a gas mixture from the fuel gas and due an injector via the inlet opening with supplied primary air. At the Brennauslledge is arranged a burner sieve, over which finally the Flame trains. To complete the combustion becomes the area supplied secondary air above the burner screen. In practice have become Burner body with a power of 2 to 3 kW as a burner unit especially proven. Set cascade gas burner systems with multiple burner bodies a multiple heating power available to a single burner body.
  • the required combustion air, d. H. the primary and the Secondary air, supplied horizontally via an air inlet, in the gas outlet direction runs at the gas nozzles.
  • Air supply is observed that the first arranged in the air flow direction
  • burner unit is sufficiently supplied with primary air, but the behind the burner units, that is, adjacent to the first burner unit Attached burner units, not enough primary air received, so that optimal combustion can not be achieved.
  • the insufficient supply with primary air is due to the fact that due to the injector effect at the first burner unit, the fresh air flow is disturbed such that for the - Seen in air flow direction - behind burner units none adequate air supply is guaranteed.
  • an atmospheric gas burner comprising a plurality of burner body with upstream mixing tubes. So with each adjacent arranged mixing tubes sucking the primary air in the area are not obstructed by the inlets, the inlets are in different, distanced from each other, perpendicular to the axes of the mixing tubes levels arranged. In radially arranged mixing tubes, these can be in different horizontal planes run before they turn over in the bottom open a burner chamber.
  • From EP 0 534 554 A2 is a gas burner system with several burner bodies known, each of which has a mixing channel with an inlet opening and having a combustion outlet.
  • the burner bodies are of a combustion chamber housing and surrounded by an air inlet.
  • the burner bodies are in two rows arranged, wherein the centroids of the inlet opening cross sections of the Rows lie at different height levels, while the burners exits are arranged substantially in the same plane. Inside the rows the inlet opening cross-sections are at the same height level.
  • the supply with combustion air by means of a fan from below.
  • the invention is based on the object, a gas burner system with at least specify two burner bodies of the type mentioned, in which at Fuel gas supply lateral fresh air supply sufficient primary air supply is guaranteed.
  • the assigned Brennauslässe each have the same height difference, as the Inlet ports. This makes it possible to each identical burner body use only at different height levels with each other be assembled. This means that this design is not structural requires complex realization.
  • the inlet openings and the firing outlets through an outside of the mixing channel arranged Separation plate separated. This allows the currents stabilize and separate from each other for the primary air and the secondary air. In particular, a deterioration of the injector effect at the inlet openings avoided by the secondary air supply.
  • the gas burner system comprises two identically constructed burner units, the have identical, essentially made of sheet burner body 1. 2, wherein the burner body 2 at a slightly higher height level than the Burner body 1 is arranged.
  • Each of the burner body 1, 2 has a curved mixing channel 3 with a serving as an inlet opening horizontally lying air inlet funnel 4 on the input side End and an upwardly open combustion outlet 5 at his on the other end.
  • the air inlet funnel 4 has a circular inlet opening cross section 4a on.
  • the combustion outlet 5 is passed through a burner screen. 6 covered, resulting in a particularly uniform outlet of the gas mixture and thus a uniform formation of the flame above the burner screen. 6 allows.
  • a gas nozzle 7 is concentric with the inlet opening cross section 4a, which is for introducing a gas jet of fuel gas, d. H. Liquefied gas or natural gas in the mixing channel 3 is used.
  • a Combustion chamber 8 penetrating air duct 9 is supplied.
  • the combustion chamber housing 8 and the air channel 9 are shown in Fig. 3 only schematically shown. It is relevant that the air flow through the air duct 9 laterally the air inlet funnel 4 of the burner body 1 and 2 meets.
  • the combustion chamber housing 8 encloses except the air duct 9 and the burner units also the actual combustion chamber with the trained over the burner sieves 6 Flames.
  • the air duct 9 also supplies the secondary air passing through the above Burner strainer 6 forming flame is sucked in and a complete combustion ensured on the burner screen 6 exiting gas mixture. ever Depending on the design, the secondary air can also be supplied via a separate fresh air duct be supplied.
  • the burner body 1, 2 are interconnected by webs 10 and on a bottom plate 11 is fixed such that the centroids of the inlet opening cross-sections 4a, i. the centers of the entrance of the air inlet funnel 4 recognizable circular cross sections, at different height levels lie with respect to the horizontal. Depending on the size, the height difference in a range of 15 to 50%, preferably 25% of the diameter of the Inlet opening cross section 4a lie. If apart from those shown in the figures Burner bodies 1, 2 more burner units are grown, are their Inlet opening cross sections 4a also at a different height level. In Fig. 3 is indicated by the webs 10 that further burner body provided can be.
  • Part of the incoming air via the air channel 9 primary air is through the gas nozzle 7 flowing gas jet in the, with respect to the air flow direction seen, first burner body 1 sucked into the air inlet funnel 4 and mixed in the mixing channel 3 with the liquefied gas.
  • the remaining one Part of the primary air flow from the air duct 9 passes largely undisturbed to the gas jet of the second burner body 2, where again primary air with the Liquefied gas is blown into the air inlet funnel 4. This method Repeats depending on the number of burner body.
  • the fresh air supply takes place through the Air duct 9 in the horizontal direction.
  • the fresh air flow with respect to the horizontal angle or to feed vertically.
  • a partition plate 12 shown only in Fig. 1 provided in the form of a thin sheet.
  • the partition plate 12 ensures that the flame caused by the flame Secondary air flow has no negative influence on the primary air flow on Air inlet funnel 4 has.

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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)

Claims (8)

  1. Système de brûleur à gaz avec au moins deux corps de brûleurs (1, 2) qui comportent chacun un conduit mélangeur (3) avec une ouverture d'admission dans laquelle le gaz de combustion et de l'air primaire sont aptes à être introduits, et une sortie de combustion (5) destinée à évacuer un mélange gaz combustible-air primaire, et qui sont entourés par un carter de chambre de combustion (8) pourvu d'une admission d'air pour de l'air frais, caractérisé en ce que les centres de gravité superficiels des sections transversales d'ouvertures d'admission (4a) sont situés à des hauteurs différentes par rapport à l'horizontale.
  2. Système de brûleur à gaz selon la revendication 1, caractérisé en ce que la différence de hauteur entre deux ouvertures d'admission voisines se situe dans une plage de 3 à 10 mm.
  3. Système de brûleur à gaz selon la revendication 2, caractérisé en ce que la différence de hauteur entre deux ouvertures d'admission voisines est de l'ordre de 5 mm.
  4. Système de brûleur à gaz selon la revendication 1, caractérisé en ce que les sections transversales d'ouvertures d'admission (4a) correspondent chacune à une surface circulaire et la différence de hauteur se situe dans une plage située entre 15 et 50 % du diamètre de la surface circulaire.
  5. Système de brûleur à gaz selon la revendication 4, caractérisé en ce que la différence de hauteur représente environ 25 % du diamètre de la surface circulaire.
  6. Système de brûleur à gaz selon l'une des revendications précédentes, caractérisé en ce que les sorties de combustion (5) présentent la même différence de hauteur que les ouvertures d'admission.
  7. Système de brûleur à gaz selon l'une des revendications précédentes, caractérisé en ce que les ouvertures d'admission et les sorties de combustion (5) sont séparées par une plaque de séparation (12) qui est disposée à l'extérieur des conduits mélangeurs.
  8. Système de brûleur à gaz selon l'une des revendications précédentes, dans lequel un injecteur de gaz est disposé concentriquement à l'intérieur du carter de chambre de combustion (8), devant chaque ouverture d'admission des conduits mélangeurs, caractérisé en ce que l'admission d'air du carter de chambre de combustion (8) forme un conduit d'air (9) par lequel l'air frais peut être amené dans le sens horizontal au moins jusqu'aux ouvertures d'admission.
EP19990108866 1998-06-23 1999-05-04 Brûleur en cascade Expired - Lifetime EP0967436B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19827936 1998-06-23
DE1998127936 DE19827936C1 (de) 1998-06-23 1998-06-23 Gasbrennersystem mit wenigstens zwei Brennerkörpern

Publications (3)

Publication Number Publication Date
EP0967436A2 EP0967436A2 (fr) 1999-12-29
EP0967436A3 EP0967436A3 (fr) 2000-02-09
EP0967436B1 true EP0967436B1 (fr) 2005-08-03

Family

ID=7871744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990108866 Expired - Lifetime EP0967436B1 (fr) 1998-06-23 1999-05-04 Brûleur en cascade

Country Status (2)

Country Link
EP (1) EP0967436B1 (fr)
DE (1) DE19827936C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD905217S1 (en) 2018-09-05 2020-12-15 Dometic Sweden Ab Air conditioning apparatus
USD907183S1 (en) 2016-11-23 2021-01-05 Dometic Sweden Ab Air conditioning apparatus
US11772452B2 (en) 2017-11-16 2023-10-03 Dometic Sweden Ab Air conditioning apparatus for recreational vehicles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700090907A1 (it) * 2017-08-04 2019-02-04 Dometic Sweden Ab Apparato di riscaldamento per un veicolo ricreativo
WO2019025633A1 (fr) 2017-08-04 2019-02-07 Dometic Sweden Ab Appareil de chauffage pour véhicule de loisirs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT385834B (de) * 1986-06-10 1988-05-25 Vaillant Gmbh Gasbrenner
DE8804529U1 (de) * 1987-04-15 1988-05-19 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Atmosphärischer Gasbrenner
EP0534554B1 (fr) * 1991-09-24 1997-03-26 Tokyo Gas Co., Ltd. Brûleur à faible génération des oxides d'azote et petit appareil de combustion
AT398477B (de) * 1992-09-24 1994-12-27 Vaillant Gmbh Düsenplatte eines atmosphärischen gasbrenners

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD907183S1 (en) 2016-11-23 2021-01-05 Dometic Sweden Ab Air conditioning apparatus
US11772452B2 (en) 2017-11-16 2023-10-03 Dometic Sweden Ab Air conditioning apparatus for recreational vehicles
USD905217S1 (en) 2018-09-05 2020-12-15 Dometic Sweden Ab Air conditioning apparatus
USD944374S1 (en) 2018-09-05 2022-02-22 Dometic Sweden Ab Air conditioning apparatus

Also Published As

Publication number Publication date
DE19827936C1 (de) 1999-12-02
EP0967436A2 (fr) 1999-12-29
EP0967436A3 (fr) 2000-02-09

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