EP0360090B1 - Chaudière à gaz avec brûleur atmosphérique - Google Patents

Chaudière à gaz avec brûleur atmosphérique Download PDF

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Publication number
EP0360090B1
EP0360090B1 EP89116600A EP89116600A EP0360090B1 EP 0360090 B1 EP0360090 B1 EP 0360090B1 EP 89116600 A EP89116600 A EP 89116600A EP 89116600 A EP89116600 A EP 89116600A EP 0360090 B1 EP0360090 B1 EP 0360090B1
Authority
EP
European Patent Office
Prior art keywords
gas
insert
displacer
heating boiler
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
EP89116600A
Other languages
German (de)
English (en)
Other versions
EP0360090A1 (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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89116600T priority Critical patent/ATE83552T1/de
Publication of EP0360090A1 publication Critical patent/EP0360090A1/fr
Application granted granted Critical
Publication of EP0360090B1 publication Critical patent/EP0360090B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water 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
    • F24H1/26—Water 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
    • F24H1/28—Water 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 including one or more furnace or fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • the invention relates to a gas boiler with an atmospheric burner according to the preamble of the main claim.
  • a gas boiler of this type is known from FR-A-20 86 966. Furthermore, a relevant gas boiler according to DE-U-80 02 621 is known. A gas boiler according to DE-A-22 8 919 also has a similar structure.
  • the displacer body of the boiler according to DE-U-80 02 621 is a kind of pot-shaped combustion chamber which, with its open end, faces the atmospheric gas burner arranged underneath is directed. The heat transfer to the heat transfer medium can therefore only take place via the ribbed shaft walls, and since this displacer insert cannot be cooled and thus becomes very hot, this displacer can also have a NOX-reducing effect on the combustion process.
  • a water-carrying sheet metal cylinder is used in the burner shaft, occupying practically its entire height, which is connected to the water-carrying double wall of the burner shaft with supply and return connections.
  • the outer wall of the cylinder is covered with longitudinal ribs formed and attached from special profiles.
  • This cylindrical displacement insert is particularly thermally highly stressed on the inflow side and is therefore also inevitably exposed to condensate attacks, whereby, as far as heat transfer is concerned, an imbalance between the non-finned, water-cooled combustion chamber on the one hand and the externally finned, water-cooled displacement insert on the other consists.
  • FR-A-20 86 966 does not show how the displacement insert is actually designed to meet all heating requirements, namely a sufficiently long burn-out distance, condensate resistance, NOX reduction with the largest possible heat transfer area and still simple manufacture.
  • the invention is therefore based on the object to improve a gas boiler of the generic type in such a way that, in the case of condensate-resistant design of its hot gas-charged areas, the central shaft area within the fins also, as with the boiler according to FR-A-20 86 966, for heat transfer to the heat transfer medium can be used with the proviso that these elements involved in their manufacture and assembly can be made condensate-proof in a simple manner and at the same time have a NOX-reducing effect on the combustion process, the production of the displacement insert also taking into account environmentally friendly aspects.
  • the principle of a water-carrying displacement insert is therefore not simple, which would be obvious, in such a way that the displacement insert according to FR-A-20 86 966 is replaced by one made of cast iron, but this displacement insert is made of two liquid-tight materials joinable shells formed, which are "green shaped” formed from condensate-resistant cast. “Green-shaped” is understood to mean that the casting can be formed without a core, ie the positive model of the two shells is designed so that it can be removed from the molding sand and no cores of molding sand are arranged between the two molding sand parts Need to become.
  • the entire displacement insert is therefore very easy to produce by casting, which can be kept considerably shorter or smaller than the displacement insert according to FR-A-20 86 due to the fact that the combustion chamber wall should also be provided with longitudinal ribs 966.
  • the gas boiler consists of a cylindrical, water-cooled burner shaft 1, in the lowest area of which the atmospheric gas burner 2 and above it a heating gas duct 3, which is circular in cross-section and is divided by ribbing, is connected to the water-cooled burner shaft 1 and is connected to the water-cooled burner shaft 1 and provided with longitudinal ribs 12 is arranged, above which there is an exhaust gas collection chamber 5 with a central exhaust gas outlet connection.
  • the displacer insert 4 is formed from two shells 6, 7 which can be joined together in a liquid-tight manner and which are “green-shaped” and are formed from condensate-resistant castings.
  • the lower, burner-side shell 6 has a sprue extension 8 for connecting the inflow channel 9, which connects the displacement insert 4 with the water-carrying double jacket of the combustion shaft 1.
  • two or three inflow channels 9, correspondingly distributed over the circumference, can also be provided.
  • the upper shell 7 is designed as a pot 7 'and this is inserted into the likewise pot-shaped lower shell 6, the peripheral edge 20 of the upper shell 7 being placed in a sealed manner on the peripheral edge 21 of the lower shell, which in this case is provided with the connection extension 8 for the lower inflow channel 9 and for the upper outflow channel 10.
  • both the lower shell 6 is provided with radially outwardly directed longitudinal ribs 12 and the combustion chamber wall 14 is provided with radially inwardly directed longitudinal ribs 15, the ribs 12 engaging in the spaces between the ribs 15.
  • the lower shells 6 in all of the exemplary embodiments are provided with cast-on heat transfer surface enlargements 11 in the form of knobs 17 on their bottom wall 16, which can easily be taken into account in the production of the lower shell 6, since this makes the molding from casting material readily and allows without much effort.
  • the gas boiler is designed such that the upper shell 7, which is designed as a pot and is inserted into the lower shell 6, has a circumferential edge 21 which bulges back in the direction of its base 16, and the connecting extension 8 for the upper outflow channel 10 also has two or three connecting extensions 8.
  • the arched-back peripheral edge 21 likewise has radially outwardly directed longitudinal ribs 12 '.
  • the upper shell 7 is also provided with radially outwardly directed longitudinal ribs 12.
  • the upper shell 7 is, as shown, designed as the opening 18 of the lower, cup-shaped shell 6, arching shell, which is provided with an outflow region 19 rising to the outflow channel connection 10.
  • Such a shaping can also be carried out without a core, with only the hole for the connection of the upper overflow channel 10 having to be drilled out.
  • the connection extension 8 on the lower shell 6 points downward and the overflow channel 9 is connected very deeply, as can be seen, to the water-carrying double wall of the combustion shaft 1.
  • the two shells 6, 7 are connected to one another at their connecting edges 22, which of course have to be machined accordingly, with screws 23 including an annular seal 24.
  • FIG. 6 it is also possible, and this also applies to the embodiment of FIG. 7, to provide the connecting edges 22 of the two shells 6, 7 with internal and external threads 25 and to screw the two shells together in a sealed manner.
  • the installation in the combustion shaft 1 takes place, of course, in the screwed-together state of the displacer body 4.
  • the displacer body 4 has a pot-like upper bowl 7 projecting into the interior of the lower bowl 6, as is the case with the exemplary embodiments according to FIGS.
  • the combustion shaft wall 14 is double-walled, that is, according to the exemplary embodiment, the combustion shaft wall is formed from individual cast rings 14 ', on which the radially inward directed longitudinal ribs 15 are cast with.
  • the inflow and outflow ducts 9, 10, like the combustion shaft wall 14 are double-walled.
  • the inner channel piece is sealed and screwed into the connection extension 8 of the displacer insert 4, wherein the outer channel piece 28 is then simply pushed over the opening 27 in the combustion shaft wall 14.
  • the inner channel piece 29 is then connected to the shaft wall 14 in a liquid-tight manner by means of a weld seam 30, after a suitable sealing compound has previously been introduced into the small, annular spaces 31.
  • a suitable sealing compound has previously been introduced into the small, annular spaces 31.
  • screwing in of the inner channel piece 29 in the connection extension 8 is of course also suitable sealant introduced.
  • this type of integration also applies to the outflow channels 10.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Incineration Of Waste (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Chaudière de chauffage au gaz avec un brûleur atmosphérique constituée par une cuve de combustion cylindrique, refroidie par eau (1) dans la zone la plus inférieure de laquelle se trouve le brûleur atmosphérique (2) et au-dessus de laquelle est placé un insert volumétrique (4) qui est pourvu de nervures longitudinales (12) et qui délimite un canal de gaz de chauffage (3), de section annulaire, divisé par des nervures, qui est en relation avec la cuve de combustion refroidie par eau (1), insert au-dessus duquel se trouve une chambre de collecte des gaz perdus (5) avec tubulure centrale d'évacuation des gaz perdus.
    caractérisée en ce
    que l'insert volumétrique (4) est formé par deux coques (6, 7) en fonte résistante au produit de condensation qui sont assemblées en étant étanches au liquide.
    que la coque inférieure (6) présente un prolongement coulé (8) pour le raccord d'un canal d'arrivée (9),
    que la coque inférieure (6) ou la coque supérieure (7) présente un prolongement coulé (8) pour le raccord d'un canal d'évacuation (10) et que les nervures longitudinales (12) sont placées sur la coque inférieure (6) dans la zone du canal du gaz de chauffage (3) et s'engrènent dans les espaces intermédiaires des nervures longitudinales (15) placées sur la paroi de la cuve de combustion (14).
  2. Chaudière de chauffage au gaz selon la revendication 1,
    caractérisée en ce
    que la coque inférieure (6) est pourvue côté arrivée sur sa paroi de fond (16) d'agrandissements de surface thermoconductrice (11) en forme de boutons (17).
  3. Chaudière de chauffage au gaz selon la revendication 1 ou 2,
    caractérisée en ce
    que la coque supérieure (7) est configurée comme un pot (7') et que celui-ci est mis en place dans la coque inférieure (6) en forme de pot, le bord périphérique (20) de la coque supérieure (7) étant posé sur le bord périphérique (21) de la coque inférieure (6) qui est pourvue du prolongement coulé (8) aussi bien pour le canal inférieur d'arrivée (9) que pour le canal supérieur d'évacuation (10).
  4. Chaudière de chauffage au gaz selon la revendication 1 ou 2,
    caractérisée en ce
    que la coque supérieure (7), configurée comme pot et mise en place dans la coque inférieure (6), présente un bord périphérique (21) courbé en arrière en direction de son fond (16) et que bord présente le prolongement de raccord (8) pour le canal supérieur d'évacuation (10).
  5. Chaudière de chauffage au gaz selon l'une des revendications 1 à 4,
    caractérisée en ce
    que les deux coques (6, 7) sont reliées l'une à l'autre sur leurs bords de raccord (22) par des vis (23) en intégrant un joint annulaire (24).
  6. Chaudière de chauffage au gaz selon l'une des revendications 1 à 4,
    caractérisée en ce
    que les bords de raccord (22) des deux coques (6, 7) sont pourvus d'un filet extérieur et extérieur (25) et sont ainsi vissés en étant étanchés.
  7. Chaudière de chauffage au gaz selon l'une des revendications 4 à 6,
    caractérisée en ce
    que l'intérieur (26) de la coque supérieure de type pot (7) est fermé avec un couvercle (27) vers la chambre de collecte des gaz perdus (5).
  8. Chaudière de chauffage selon l'une des revendications 1 à 7,
    caractérisée en ce
    que les canaux d'arrivée et d'évacuation (9, 10) sont également configurés à double paroi comme la paroi de la cuve de combustion (14).
  9. Chaudière de chauffage selon l'une des revendications 1 à 8,
    caractérisée en ce
    que l'insert volumétrique (4) présente la moitié ou approximativement la moitié de la hauteur (H) de la cuve de combustion (1).
EP89116600A 1988-09-14 1989-09-08 Chaudière à gaz avec brûleur atmosphérique Expired - Lifetime EP0360090B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89116600T ATE83552T1 (de) 1988-09-14 1989-09-08 Gasheizkessel mit atmosphaerischem brenner.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3831237 1988-09-14
DE3831237A DE3831237A1 (de) 1988-09-14 1988-09-14 Gasheizkessel mit atmosphaerischem brenner

Publications (2)

Publication Number Publication Date
EP0360090A1 EP0360090A1 (fr) 1990-03-28
EP0360090B1 true EP0360090B1 (fr) 1992-12-16

Family

ID=6362936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116600A Expired - Lifetime EP0360090B1 (fr) 1988-09-14 1989-09-08 Chaudière à gaz avec brûleur atmosphérique

Country Status (4)

Country Link
EP (1) EP0360090B1 (fr)
AT (1) ATE83552T1 (fr)
DE (2) DE3831237A1 (fr)
ES (1) ES2037359T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411492B (de) * 1999-01-19 2004-01-26 Vaillant Gmbh Anordnung mit einem wandheizgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE451368C (de) * 1927-10-25 Vosswerke Akt Ges Dampfbadkochkessel
FR2086966A5 (fr) * 1970-04-15 1971-12-31 Vidalenq Maurice
DE8002621U1 (de) * 1980-02-01 1982-01-14 Vießmann, Hans, 3559 Battenberg Heizungskessel mit atmosphaerischem gasbrenner
DE3425667A1 (de) * 1984-07-12 1986-01-23 Hans Dr.h.c. 3559 Battenberg Vießmann Heizungskessel fuer fluessige und gasfoermige brennstoffe
DE8420869U1 (de) * 1984-07-12 1987-07-23 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heizungskessel für flüssige und gasförmige Brennstoffe

Also Published As

Publication number Publication date
ES2037359T3 (es) 1993-06-16
ATE83552T1 (de) 1993-01-15
EP0360090A1 (fr) 1990-03-28
DE58903021D1 (de) 1993-01-28
DE3831237A1 (de) 1990-03-22

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