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CH677017A5 - - Google Patents

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Publication number
CH677017A5
CH677017A5 CH449688A CH449688A CH677017A5 CH 677017 A5 CH677017 A5 CH 677017A5 CH 449688 A CH449688 A CH 449688A CH 449688 A CH449688 A CH 449688A CH 677017 A5 CH677017 A5 CH 677017A5
Authority
CH
Switzerland
Prior art keywords
combustion chamber
burner
cooling
water
wall
Prior art date
Application number
CH449688A
Other languages
German (de)
Inventor
Hans-Albrecht Kohlmann
Thomas Pieper
Original Assignee
Vaillant 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 Vaillant Gmbh filed Critical Vaillant Gmbh
Publication of CH677017A5 publication Critical patent/CH677017A5/de

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/70Baffles or like flow-disturbing devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/10Baffles or deflectors formed as tubes, e.g. in water-tube boilers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/44Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40

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

Description

1 1

CH 677 017 A5 CH 677 017 A5

2 2nd

Beschreibung description

Die Erfindung betrifft eine Brennkammer mit gekühltem Brenner mit zumindest einem sich über dessen Flammenbereich erstreckenden, wasserführenden Kühlrohr. The invention relates to a combustion chamber with a cooled burner with at least one water-conducting cooling pipe extending over its flame area.

Aufgabe der Erfindung ist es, zur Verringerung der Schadstoffemission (NÖX) eines solchen Brenners eine wirksame Kühlung dessen Flammenbereiches mit einem möglichst geringen konstruktiven Aufwand durchzuführen. The object of the invention is to reduce the pollutant emission (NÖX) of such a burner by effectively cooling its flame area with the least possible design effort.

Erfindungsgemäss ist zu diesem Zweck eine Schar quer zur Achse des länglichen Brenners, z.B. eines Brennerrohres, zwischen dessen oberseitig angeordneten Brennstoffaustrittsöffnungen verlaufender Kühlrohre vorgesehen. According to the invention, a coulter is transverse to the axis of the elongated burner, e.g. a burner tube, between the cooling tubes arranged on the top of the fuel outlet openings.

Diese Kühlrohre könnten zwar waagerecht oder gekrümmt verlaufen, um aber das Durchströmen des Kühlwassers thermodynamisch sicherzustellen, wird es bevorzugt, diese Kühlrohre in vertikalen Ebenen schräg verlaufen zu lassen. Zur Verbesserung der ihnen zugedachten Kühlfunktion sollten ausserdem jeweils einander benachbarte Kühlrohre im Wechsel mit gegenläufiger Schräge verlaufend angeordnet werden. These cooling tubes could run horizontally or curved, but in order to ensure the flow of the cooling water thermodynamically, it is preferred to let these cooling tubes run obliquely in vertical planes. In order to improve the cooling function intended for them, cooling tubes which are adjacent to one another should also be arranged alternately with opposite slopes.

Mit besonderen Vorteilen ist die Erfindung auf Brenner von Wasserheizern anwendbar, deren Brennkammer sich innerhalb des aufzuheizenden Wassers, z.B. in einem Wasserspeicher, befindet. Bei einer solchen Brennkammer können die Kühlrohre die Wandung der Brennkammer durchsetzen und vom umgebenden Wasser durchströmt sein. Solcherart lässt sich die Kühlung des Flammenbereiches des Brenners besonders vorteilhaft mit der Erhitzung des aufzuheizenden Wassers koppeln. With particular advantages, the invention is applicable to burners of water heaters, the combustion chamber of which is located within the water to be heated, e.g. in a water reservoir. In such a combustion chamber, the cooling tubes can penetrate the wall of the combustion chamber and the surrounding water can flow through them. In this way, the cooling of the flame area of the burner can be coupled particularly advantageously with the heating of the water to be heated.

Um die Verbindungen der Kühlrohre mit der Brennkammerwandung nicht durch temperaturbedingte Formänderungen der Kühlrohre zu gefährden, können diese Kühlrohre in ihren Endbereichen mit Stauchungen versehen werden, die solche Formänderungen auszugleichen vermögen. In order not to endanger the connections of the cooling tubes to the combustion chamber wall due to temperature-related changes in the shape of the cooling tubes, these cooling tubes can be provided with compressions in their end regions which are able to compensate for such changes in shape.

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist in den Zeichnungen veranschaulicht. Im einzelnen zeigen An embodiment of the subject matter of the invention is illustrated in the drawings. Show in detail

Fig. 1 einen Längsschnitt durch den Brenner eines Wasserheizers und dessen Brennkammer, 1 shows a longitudinal section through the burner of a water heater and its combustion chamber,

Fig. 2 einen Querschnitt nach II-II der Fig. 1 und Fig. 2 shows a cross section according to II-II of Fig. 1 and

Fig. 3 ein Detail III aus Fig. 2 in grösserem Massstab. Fig. 3 shows a detail III of Fig. 2 on a larger scale.

Der Brenner, bestehend aus einem Brennerrohr 1, das an seiner Oberseite Brennstoffaustrittsöffnungen aufweist und dem über ein Mischrohr 2 ein Brennstoff-Luft-Gemisch zugeführt wird, befindet sich im Inneren einer von der Wandung 3 begrenzten Brennkammer 4 innerhalb des vom aufzuheizenden Wasser gefüllten Speicherraumes eines Wasserheizers. Die Abgase verlassen diese Brennkammer 4 über einen Abgasabzug 5. An den Gemischaustrittsöffnungen bilden sich nach erfolgter Zündung die Brennerflammen 6, deren Bereich von den Kühlrohren 7 durchsetzt wird. The burner, consisting of a burner tube 1, which has fuel outlet openings on its upper side and to which a fuel-air mixture is fed via a mixing tube 2, is located inside a combustion chamber 4 delimited by the wall 3 within the storage space filled by the water to be heated Water heater. The exhaust gases leave this combustion chamber 4 via an exhaust gas extractor 5. After ignition, the burner flames 6 form at the mixture outlet openings, the area of which the cooling tubes 7 pass through.

Diese Kühlrohre 7 verlaufen zwischen den Brennerfiammen 6 unter einem Winkel a von 10 bis These cooling tubes 7 run between the burner fiames 6 at an angle a of 10 to

30° schräg gegen die Waagrechte und durchsetzten mit ihren Enden die Wandung 3; sie sind - gemäss Fig. 3 - mit dieser Wandung 3 verschweisst. 30 ° obliquely against the horizontal and with its ends penetrate the wall 3; according to FIG. 3, they are welded to this wall 3.

Zur Aufnahme der temperaturbedingten Formänderungen, insbesondere Längenänderungen, weisen diese Kühlrohre 7 in zumindest einem ihrer Endbereiche eine Stauchung 8 auf, die solche Formänderungen bzw. Schweissspannungen auszugleichen vermag. To absorb the temperature-related changes in shape, in particular changes in length, these cooling tubes 7 have a compression 8 in at least one of their end regions, which is able to compensate for such changes in shape or welding stresses.

Das Durchströmen dieser mit dem Speicherraum verbundenen Kühlrohre 7 wird durch ihre Schräglage thermodynamisch erzwungen, weil das in ihnen enthaltene Wasser infolge der Erhitzung durch die Brennerflammen 6 bestrebt ist, dem jeweils höhergelegenen Ende des Kühlrohres 7 zuzuströmen, wobei es zwangsläufig den Bereich der Flammen 6 kühlt. The flow through these cooling tubes 7, which are connected to the storage space, is thermodynamically forced due to their inclined position, because the water contained in them, as a result of the heating by the burner flames 6, tends to flow towards the higher end of the cooling tube 7, inevitably cooling the area of the flames 6 .

Durch den steten Wechsel in der Schräglage der Kühlrohre 7 ergibt sich vorteilhafterweise eine gegenläufige Strömung in jeweils einander benachbarten Kühlrohren 7. The constant change in the inclined position of the cooling tubes 7 advantageously results in a countercurrent flow in cooling tubes 7 which are adjacent to one another.

Claims (4)

PatentansprücheClaims 1. Brennkammer mit einem gekühlten Brenner mit zumindest einem sich über dessen Flammenbereich erstreckenden, wasserführenden Kühlrohr, dadurch gekennzeichnet, dass eine Schar quer zur Achse des länglichen Brenners (1) zwischen dessen oberseitig angeordneten Brennstoffaustrittsöffnungen verlaufender Kühlrohre (7) vorgesehen ist, die in vertikalen Ebenen, schräg zur Waagerechten verlaufend, angeordnet sind.1. Combustion chamber with a cooled burner with at least one water-conducting cooling pipe extending over its flame area, characterized in that a family of cooling pipes (7) extending transversely to the axis of the elongated burner (1) is provided between its top-side fuel outlet openings, which is arranged in vertical Layers are arranged obliquely to the horizontal. 2. Brennkammer nach Anspruch 1, dadurch gekennzeichnet, dass die jeweils einander benachbarten Kühlrohre (7) im Wechsel mit gegenläufiger Schräge, zur Waagerechten verlaufend, angeordnet sind.2. Combustion chamber according to claim 1, characterized in that the cooling tubes (7), which are adjacent to one another in each case, are arranged alternately with opposite slopes, extending to the horizontal. 3. Wasserheizer mit einer Brennkammer nach Anspruch 1 oder 2, wobei der Brenner innerhalb der vom zu beheizenden Nasser umgebenen Brennkammer angeordnet ist, dadurch gekennzeichnet, dass die beiden Enden der wasserführenden Kühlrohre (7) die Wandung (3) der Brennkammer (4) durchsetzen und zwecks Kühlung des Flammenbereiches (6) des Brenners (1) von umgebenden, zu beheizenden Nasser durchströmt sind.3. Water heater with a combustion chamber according to claim 1 or 2, wherein the burner is arranged within the combustion chamber surrounded by the Nasser to be heated, characterized in that the two ends of the water-carrying cooling pipes (7) penetrate the wall (3) of the combustion chamber (4) and for the purpose of cooling the flame region (6) of the burner (1), surrounding water to be heated flows through. 4. Wasserheizer nach Anspruch 3, dadurch gekennzeichnet, dass die Wandung der Kühlrohre (7) im Bereich der von ihnen durchsetzten Brennkammerwandung (3) zum Ausgleich temperaturbedingter Längsspannungen dienende Stauchungen (9) aufweist.4. Water heater according to claim 3, characterized in that the wall of the cooling tubes (7) in the region of the combustion chamber wall penetrated by them (12) serving to compensate temperature-related longitudinal stresses serving. 55 1010th 1515 2020th 2525th 3030th 3535 4040 4545 5050 5555 6060 6565 22nd
CH449688A 1987-12-17 1988-12-05 CH677017A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT332587A AT391191B (en) 1987-12-17 1987-12-17 DEVICE FOR COOLING A LONG-TERM BURNER

Publications (1)

Publication Number Publication Date
CH677017A5 true CH677017A5 (en) 1991-03-28

Family

ID=3548824

Family Applications (1)

Application Number Title Priority Date Filing Date
CH449688A CH677017A5 (en) 1987-12-17 1988-12-05

Country Status (6)

Country Link
AT (1) AT391191B (en)
BE (1) BE1002617A6 (en)
CH (1) CH677017A5 (en)
DE (2) DE8815502U1 (en)
FR (1) FR2624951B1 (en)
NL (1) NL8803058A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL194652C (en) * 1989-05-20 2002-10-04 Vaillant Joh Gmbh & Co Flow water heater.
DE29616990U1 (en) * 1996-09-30 1997-07-03 Vogt, Hubert, 61276 Weilrod boiler

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897198A (en) * 1972-04-17 1975-07-29 Radiation Ltd Gaseous fuel burners
US3789805A (en) * 1972-05-17 1974-02-05 Massachusetts Inst Technology Burner and heat exchanger
JPS6078247A (en) * 1983-10-04 1985-05-02 Tokyo Gas Co Ltd Method and device for heat exchange through high-load combustion while suppressing CO generation
GB2169397A (en) * 1985-04-19 1986-07-09 Robert Dowd Heat recovery from commercial cookers
DE3634358A1 (en) * 1985-10-05 1987-06-11 Vaillant Joh Gmbh & Co Burner, in particular atmospheric premixing gas burner, and cooling rods for such a burner
DE3678570D1 (en) * 1985-11-15 1991-05-08 Vaillant Joh Gmbh & Co ATMOSPHERIC PRE-MIXED GAS BURNER.
DE8603887U1 (en) * 1986-02-11 1986-03-20 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Fuel-heated hot water storage tank
DE8617731U1 (en) * 1986-06-30 1986-08-14 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Water heater

Also Published As

Publication number Publication date
DE3841968A1 (en) 1989-06-29
DE3841968C2 (en) 1993-06-17
NL8803058A (en) 1989-07-17
ATA332587A (en) 1990-02-15
BE1002617A6 (en) 1991-04-09
FR2624951A1 (en) 1989-06-23
AT391191B (en) 1990-08-27
DE8815502U1 (en) 1989-01-26
FR2624951B1 (en) 1990-06-15

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Legal Events

Date Code Title Description
PL Patent ceased