EP0583525B1 - Gas fired water-tube boiler - Google Patents

Gas fired water-tube boiler Download PDF

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Publication number
EP0583525B1
EP0583525B1 EP19920402285 EP92402285A EP0583525B1 EP 0583525 B1 EP0583525 B1 EP 0583525B1 EP 19920402285 EP19920402285 EP 19920402285 EP 92402285 A EP92402285 A EP 92402285A EP 0583525 B1 EP0583525 B1 EP 0583525B1
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EP
European Patent Office
Prior art keywords
tubes
tank
boiler
series
smoke
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EP19920402285
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German (de)
French (fr)
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EP0583525A1 (en
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Maurice Vidalenq
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Individual
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Individual
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Priority to DE1992600149 priority Critical patent/DE69200149T2/en
Priority to ES92402285T priority patent/ES2056697T3/en
Priority to EP19920402285 priority patent/EP0583525B1/en
Publication of EP0583525A1 publication Critical patent/EP0583525A1/en
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Publication of EP0583525B1 publication Critical patent/EP0583525B1/en
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    • 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
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes

Definitions

  • the present invention relates to a boiler of the type comprising a substantially parallelepiped box, in which are mounted a hearth and a set of vertical tubes which serve as heating surface and heat exchange between the hearth and the water to be heated circulating in the tubes, and further comprising two collectors respectively upper and lower, into which the tubes open at their ends, a water inlet pipe to be heated and a hot water outlet pipe, said hearth comprising a gas burner having a large number of nozzles oriented horizontally towards said tubes, a space being provided between external tubes of said set of tubes and the vertical wall of the box to collect the fumes and burnt gases after their passage between said tubes, the fumes being discharged through a nozzle connected to said wall of the box.
  • FIGS. 1 and 2 of the accompanying drawings show schematically, respectively in vertical section and in horizontal section, a known boiler of the above-mentioned type.
  • the number 1 designates the boiler casing
  • the number 2 designates in general the hearth of the boiler
  • the number 3 designates vertical tubes, which are traversed by the water to be heated and which are connected, to their ends, to an upper manifold 4 and to a lower manifold 5.
  • the numbers 6 and 7 respectively designate a water inlet pipe to be heated and a hot water outlet pipe, which are both connected to the upper manifold 4 in the case of the boiler known from EP-A-0 390 656, where the water circulates in the tubes 3 by a thermosyphon effect.
  • the number 9 designates the space in which the burnt gases and the fumes are collected after their passage between the tubes 3; the number 11 designates the smoke evacuation nozzle and the number 12 designates a smoke extraction fan, the suction port of which is connected to the nozzle 11 and the discharge port of which is connected to a chimney or other exhaust duct not shown.
  • the tubes 3 are divided into two spaced groups of tubes, between which is disposed the gas burner 8 as shown in Figures 1 and 2.
  • the burner 8 has two opposite faces in each of which are formed a large number nozzles which, when the burner is lit, projects a large number of flames 13 roughly horizontally towards the tubes 3 of each of the two groups.
  • Part of the vertical wall of the box 1 and an internal partition 14 force the burnt gases to pass between the tubes 3.
  • the burnt gases are still at a relatively high temperature, of the order of 160 ° C. This makes it necessary to provide thermal insulation 15 all around the vertical wall of the box 1.
  • Such insulation appreciably increases the manufacturing cost of the boiler.
  • the present invention therefore aims to provide a boiler of the above-mentioned type, in which the insulation can be eliminated or largely reduced.
  • the boiler according to the present invention is characterized in that, on a first side of the box and on most of the second and third sides of the box adjacent to the first side, the vertical wall of the box is formed by a series of tubes forming part of said set of tubes, each interval between adjacent tubes of said series of tubes being as small as possible and made gas tight, in that, on the fourth side of the box opposite to the first side and on the remaining parts of the second and third sides, the vertical wall of the box is formed by a sheet whose vertical end edges are connected, in a gas-tight manner, to the end tubes of said series of tubes, in that the smoke evacuation nozzle is connected to said sheet on the fourth side of the box, in that the remainder of the tubes of said set of tubes is arranged in several columns of available tubes placed parallel to the fourth side of the box, in that said smoke collecting space is arranged between this arrangement of tubes and the sheet metal on the fourth side of the box, and in that the burner is arranged in the hearth, which is arranged between said arrangement of tubes and the tubes
  • the arrangement of tubes of the boiler of the present invention will generally comprise a greater number of columns than that of each group of tubes. of the known boiler. In other words, in the boiler of the present invention, the hot gases from the burner must pass through a thicker bundle or sheet of tubes than in the known boiler.
  • the burnt gases arriving in the smoke collecting space after passing between the tubes will have yielded a greater amount of heat and will therefore have a lower temperature in the boiler of the present invention than in the known boiler. Consequently, it is no longer essential to provide insulation outside the sheet forming the smoke collector or, if insulation is provided, it can be much lighter than in the known boiler and, moreover, it it is not necessary to provide it over the entire vertical wall of the box.
  • the arrangement of the tubes in accordance with the present invention makes it possible to significantly increase the thermosiphonic activity compared to the boiler known from EP-A-0 390 656. Indeed, for the reasons already indicated above, the difference between the temperature of the water passing through the tubes close to the hearth and that of the water passing through the tubes close to the smoke collecting space is greater in the boiler according to the invention than in the known boiler, whence it this results in a greater thermosyphon effect.
  • Figure 1 is a schematic vertical sectional view of a known boiler.
  • FIG. 2 is a view in horizontal section along line II-II of FIG. 1.
  • Figure 3 is a schematic vertical sectional view of a boiler according to the present invention.
  • FIG. 4 is a view in horizontal section along the line IV-IV of FIG. 3.
  • FIGS. 3 and 4 the elements of the boiler of the invention which are identical or which play the same role as those of the known boiler of FIGS. 1 and 2 are designated by the same reference numbers and therefore they will not be described again in detail.
  • the boiler according to the invention shown in Figures 3 and 4, differs from that of Figures 1 and 2 in that a part of the tubes 3 is used to form a part of the vertical wall of the box 1 of the boiler as this is more particularly visible in FIG. 4. More specifically, the side 1a and the major part of the two sides 1b and 1c of the box 1 are formed by a series of tubes 3a, 3b, and 3c. Although this is not clearly shown in the diagrammatic representation of FIG.
  • each interval 16 between two adjacent tubes of the series of tubes 3a, 3b, 3c is as small as possible.
  • each interval 16 is made gas tight. This hermeticity can be obtained by various known means, for example by welding the tubes adjacent to each other along a generator or, more simply and more economically, by sealing the intervals 16 using a refractory putty, for example a "SERBAT" putty or the like.
  • the vertical wall of the box 1 is formed by a sheet 17, whose vertical end edges 17b and 17c are connected in a gas-tight manner to the extreme tubes 3b1 and 3c1 from the series of tubes 3a, 3b, 3c.
  • the edges vertical 17b and 17c can be fixed respectively to the tubes 3b1 and 3c1 by welding or a tight connection between these edges and these tubes can be obtained for example by means of a refractory mastic of the kind indicated above.
  • the rest of the tubes 3, that is to say the 3d tubes are arranged in several columns arranged parallel to the fourth side 1d of the box 1 as is clearly visible in Figure 4.
  • the hearth 2 is arranged in the space included between the arrangement of 3d tubes and the tubes 3a forming the side 1a of the casing 1.
  • the burner 8 of the boiler of the present invention only has nozzles on only one side and it is arranged in the hearth 2 so that its nozzles are oriented in the direction of the arrangement of 3d tubes.
  • the space 9 in which the fumes are collected after passing between the 3d tubes is arranged between the arrangement of 3d tubes and the sheet 17 forming the fourth side 1d of the box.
  • the smoke evacuation nozzle 11 is connected to the sheet 17, for example in the middle of the latter.

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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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Combustion Of Fluid Fuel (AREA)

Description

La présente invention concerne une chaudière du type comprenant un caisson sensiblement parallélépipédique, dans lequel sont montés un foyer et un ensemble de tubes verticaux qui servent de surface de chauffe et d'échange de chaleur entre le foyer et l'eau à chauffer circulant dans les tubes, et comprenant en outre deux collecteurs respectivement supérieur et inférieur, dans lesquels débouchent les tubes à leurs extrémités, un conduit d'arrivée d'eau à chauffer et un conduit de départ d'eau chaude, ledit foyer comportant un brûleur à gaz présentant un grand nombre d'ajutages orientés horizontalement vers lesdits tubes, un espace étant ménagé entre des tubes extérieurs dudit ensemble de tubes et la paroi verticale du caisson pour collecter les fumées et gaz brûlés après leur passage entre lesdits tubes, les fumées étant évacuées à travers une buse raccordée à ladite paroi du caisson.The present invention relates to a boiler of the type comprising a substantially parallelepiped box, in which are mounted a hearth and a set of vertical tubes which serve as heating surface and heat exchange between the hearth and the water to be heated circulating in the tubes, and further comprising two collectors respectively upper and lower, into which the tubes open at their ends, a water inlet pipe to be heated and a hot water outlet pipe, said hearth comprising a gas burner having a large number of nozzles oriented horizontally towards said tubes, a space being provided between external tubes of said set of tubes and the vertical wall of the box to collect the fumes and burnt gases after their passage between said tubes, the fumes being discharged through a nozzle connected to said wall of the box.

Une chaudière connue de ce type est décrite par exemple dans EP-A-0 390 656. Les figures 1 et 2 des dessins annexés montrent schématiquement, respectivement en coupe verticale et en coupe horizontale, une chaudière connue du type sus-indiqué. Dans les figures 1 et 2, le chiffre 1 désigne le caisson de la chaudière, le chiffre 2 désigne d'une manière générale le foyer de la chaudière et le chiffre 3 désigne des tubes verticaux, qui sont parcourus par l'eau à chauffer et qui sont raccordés, à leurs extrémités, à un collecteur supérieur 4 et à un collecteur inférieur 5. Les chiffres 6 et 7 désignent respectivement un conduit d'arrivée d'eau à chauffer et un conduit de départ d'eau chaude, qui sont tous les deux raccordés au collecteur supérieur 4 dans le cas de la chaudière connue du EP-A-0 390 656, où l'eau circule dans les tubes 3 par un effet de thermosiphon. Le chiffre 9 désigne l'espace dans lequel les gaz brûlés et les fumées sont collectés après leur passage entre les tubes 3; le chiffre 11 désigne la buse d'évacuation des fumées et le chiffre 12 désigne un ventilateur d'extraction des fumées, dont l'orifice d'aspiration est raccordé à la buse 11 et dont l'orifice de refoulement est raccordé à une cheminée ou autre conduit d'évacuation non représenté.A known boiler of this type is described for example in EP-A-0 390 656. Figures 1 and 2 of the accompanying drawings show schematically, respectively in vertical section and in horizontal section, a known boiler of the above-mentioned type. In FIGS. 1 and 2, the number 1 designates the boiler casing, the number 2 designates in general the hearth of the boiler and the number 3 designates vertical tubes, which are traversed by the water to be heated and which are connected, to their ends, to an upper manifold 4 and to a lower manifold 5. The numbers 6 and 7 respectively designate a water inlet pipe to be heated and a hot water outlet pipe, which are both connected to the upper manifold 4 in the case of the boiler known from EP-A-0 390 656, where the water circulates in the tubes 3 by a thermosyphon effect. The number 9 designates the space in which the burnt gases and the fumes are collected after their passage between the tubes 3; the number 11 designates the smoke evacuation nozzle and the number 12 designates a smoke extraction fan, the suction port of which is connected to the nozzle 11 and the discharge port of which is connected to a chimney or other exhaust duct not shown.

Dans cette chaudière connue, les tubes 3 sont répartis en deux groupes espacés de tubes, entre lesquels est disposé le brûleur à gaz 8 comme montré dans les figures 1 et 2. Le brûleur 8 comporte deux faces opposées dans chacune desquelles sont formés un grand nombre d'ajutages qui, lorsque le brûleur est allumé, projette un grand nombre de flammes 13 en gros horizontalement en direction des tubes 3 de chacun des deux groupes. Une partie de la paroi verticale du caisson 1 et une cloison interne 14 obligent les gaz brûlés à passer entre les tubes 3. Après être passés entre les tubes 3, les gaz brûlés sont encore à une température relativement élevée, de l'ordre de 160°C. Ceci oblige à prévoir une isolation thermique 15 tout autour de la paroi verticale du caisson 1. Une telle isolation augmente sensiblement le coût de fabrication de la chaudière.In this known boiler, the tubes 3 are divided into two spaced groups of tubes, between which is disposed the gas burner 8 as shown in Figures 1 and 2. The burner 8 has two opposite faces in each of which are formed a large number nozzles which, when the burner is lit, projects a large number of flames 13 roughly horizontally towards the tubes 3 of each of the two groups. Part of the vertical wall of the box 1 and an internal partition 14 force the burnt gases to pass between the tubes 3. After passing between the tubes 3, the burnt gases are still at a relatively high temperature, of the order of 160 ° C. This makes it necessary to provide thermal insulation 15 all around the vertical wall of the box 1. Such insulation appreciably increases the manufacturing cost of the boiler.

La présente invention a donc pour but de fournir une chaudière du type sus-indiqué, dans laquelle l'isolation peut être supprimée ou en grande partie réduite.The present invention therefore aims to provide a boiler of the above-mentioned type, in which the insulation can be eliminated or largely reduced.

A cet effet, la chaudière selon la présente invention est caractérisée en ce que, sur un premier côté du caisson et sur la majeure partie des deuxième et troisième côtés du caisson adjacents au premier côté, la paroi verticale du caisson est formée par une série de tubes faisant partie dudit ensemble de tubes, chaque intervalle entre des tubes adjacents de ladite série de tubes étant aussi petit que possible et rendu hermétique au gaz, en ce que, sur le quatrième côté du caisson opposé au premier côté et sur les parties restantes des deuxième et troisième côtés, la paroi verticale du caisson est formée par une tôle dont les bords verticaux d'extrémité sont raccordés, de manière étanche au gaz, aux tubes extrêmes de ladite série de tubes, en ce que la buse d'évacuation des fumées est raccordée à ladite tôle sur le quatrième côté du caisson, en ce que le restant des tubes dudit ensemble de tubes est arrangé en plusieurs colonnes de tubes disposées parallèlement au quatrième côté du caisson, en ce que ledit espace collecteur de fumées est aménagé entre cet arrangement de tubes et la tôle du quatrième côté du caisson, et en ce que le brûleur est disposé dans le foyer, qui est aménagé entre ledit arrangement de tubes et les tubes formant le premier côté du caisson, les ajutages du brûleur étant dirigés vers ledit arrangement de tubes.To this end, the boiler according to the present invention is characterized in that, on a first side of the box and on most of the second and third sides of the box adjacent to the first side, the vertical wall of the box is formed by a series of tubes forming part of said set of tubes, each interval between adjacent tubes of said series of tubes being as small as possible and made gas tight, in that, on the fourth side of the box opposite to the first side and on the remaining parts of the second and third sides, the vertical wall of the box is formed by a sheet whose vertical end edges are connected, in a gas-tight manner, to the end tubes of said series of tubes, in that the smoke evacuation nozzle is connected to said sheet on the fourth side of the box, in that the remainder of the tubes of said set of tubes is arranged in several columns of available tubes placed parallel to the fourth side of the box, in that said smoke collecting space is arranged between this arrangement of tubes and the sheet metal on the fourth side of the box, and in that the burner is arranged in the hearth, which is arranged between said arrangement of tubes and the tubes forming the first side of the box, the nozzles of the burner being directed towards said arrangement of tubes.

Avec une telle construction, il n'est pas indispensable de prévoir une isolation à l'extérieur des tubes formant une partie de la paroi verticale du caisson de la chaudière. En effet, la surface externe de ces tubes, qui forme la surface extérieure du caisson, est à la température de l'eau qui circule dans ces tubes, donc à une température qui est nettement inférieure à 100°. D'autre part, à puissance égale des chaudières, l'arrangement de tubes de la chaudière de la présente invention comportera en général un nombre de colonnes plus grand que celui de chaque groupe de tubes de la chaudière connue. Autrement dit, dans la chaudière de la présente invention les gaz chauds du brûleur doivent traverser un paquet ou nappe de tubes plus épais que dans la chaudière connue. Dans ces conditions, les gaz brûlés arrivant dans l'espace collecteur de fumées après être passés entre les tubes auront cédé une quantité de chaleur plus importante et auront donc une température plus basse dans la chaudière de la présente invention que dans la chaudière connue. En conséquence, il n'est plus indispensable de prévoir une isolation à l'extérieur de la tôle formant le collecteur de fumées ou, si une isolation est prévue, elle peut être beaucoup plus légère que dans la chaudière connue et, en outre, il n'est pas nécessaire de la prévoir sur la totalité de la paroi verticale du caisson.With such a construction, it is not essential to provide insulation on the outside of the tubes forming part of the vertical wall of the boiler casing. Indeed, the external surface of these tubes, which forms the external surface of the box, is at the temperature of the water which circulates in these tubes, therefore at a temperature which is clearly lower than 100 °. On the other hand, for equal power of the boilers, the arrangement of tubes of the boiler of the present invention will generally comprise a greater number of columns than that of each group of tubes. of the known boiler. In other words, in the boiler of the present invention, the hot gases from the burner must pass through a thicker bundle or sheet of tubes than in the known boiler. Under these conditions, the burnt gases arriving in the smoke collecting space after passing between the tubes will have yielded a greater amount of heat and will therefore have a lower temperature in the boiler of the present invention than in the known boiler. Consequently, it is no longer essential to provide insulation outside the sheet forming the smoke collector or, if insulation is provided, it can be much lighter than in the known boiler and, moreover, it it is not necessary to provide it over the entire vertical wall of the box.

En outre la disposition des tubes conformément à la présente invention permet d'accroître de façon importante l'activité thermosiphonique par rapport à la chaudière connue du EP-A-0 390 656. En effet, pour les raisons déjà indiquées plus haut, la différence entre la température de l'eau parcourant les tubes proches du foyer et celle de l'eau parcourant les tubes proches de l'espace collecteur de fumée est plus grande dans la chaudière selon l'invention que dans la chaudière connue, d'où il en résulte un effet de thermosiphon plus important.In addition, the arrangement of the tubes in accordance with the present invention makes it possible to significantly increase the thermosiphonic activity compared to the boiler known from EP-A-0 390 656. Indeed, for the reasons already indicated above, the difference between the temperature of the water passing through the tubes close to the hearth and that of the water passing through the tubes close to the smoke collecting space is greater in the boiler according to the invention than in the known boiler, whence it this results in a greater thermosyphon effect.

On décrira maintenant une forme d'exécution de la présente invention en faisant référence aux dessins annexés sur lesquels :An embodiment of the present invention will now be described with reference to the accompanying drawings in which:

la figure 1 est une vue schématique en coupe verticale d'une chaudière connue.Figure 1 is a schematic vertical sectional view of a known boiler.

La figure 2 est une vue en coupe horizontale suivant la ligne II-II de la figure 1.FIG. 2 is a view in horizontal section along line II-II of FIG. 1.

La figure 3 est une vue schématique en coupe verticale d'une chaudière conforme à la présente invention.Figure 3 is a schematic vertical sectional view of a boiler according to the present invention.

La figure 4 est une vue en coupe horizontale suivant la ligne IV-IV de la figure 3.FIG. 4 is a view in horizontal section along the line IV-IV of FIG. 3.

La chaudière connue des figures 1 et 2 ayant déjà été décrite plus haut, on ne reviendra pas sur ces figures.The boiler known in Figures 1 and 2 having already been described above, we will not return to these figures.

Dans les figures 3 et 4, les éléments de la chaudière de l'invention qui sont identiques ou qui jouent le même rôle que ceux de la chaudière connue des figures 1 et 2 sont désignés par les mêmes numéros de référence et ils ne seront donc pas décrits à nouveau en détail. La chaudière selon l'invention, montrée dans les figures 3 et 4, diffère de celle des figures 1 et 2 par le fait qu'une partie des tubes 3 est utilisée pour former une partie de la paroi verticale du caisson 1 de la chaudière comme cela est plus particulièrement visible dans la figure 4. Plus précisément, le côté 1a et la majeure partie des deux côtés 1b et 1c du caisson 1 sont formés par une série de tubes 3a, 3b, et 3c. Bien que cela n'apparaisse pas clairement dans la représentation schématique de la figure 4, les tubes 3a, 3b et 3c sont disposés le plus près possible les uns des autres, de telle façon que chaque intervalle 16 entre deux tubes adjacents de la série de tubes 3a, 3b, 3c soit aussi petit que possible. En outre, chaque intervalle 16 est rendu hermétique au gaz. Cette herméticité peut être obtenue par divers moyens connus, par exemple en soudant les tubes adjacents les uns aux autres le long d'une génératrice ou, plus simplement et plus économiquement, en obturant les intervalles 16 à l'aide d'un mastic réfractaire, par exemple un mastic "SERBAT" ou similaire.In FIGS. 3 and 4, the elements of the boiler of the invention which are identical or which play the same role as those of the known boiler of FIGS. 1 and 2 are designated by the same reference numbers and therefore they will not be described again in detail. The boiler according to the invention, shown in Figures 3 and 4, differs from that of Figures 1 and 2 in that a part of the tubes 3 is used to form a part of the vertical wall of the box 1 of the boiler as this is more particularly visible in FIG. 4. More specifically, the side 1a and the major part of the two sides 1b and 1c of the box 1 are formed by a series of tubes 3a, 3b, and 3c. Although this is not clearly shown in the diagrammatic representation of FIG. 4, the tubes 3a, 3b and 3c are arranged as close to each other as possible, so that each interval 16 between two adjacent tubes of the series of tubes 3a, 3b, 3c is as small as possible. In addition, each interval 16 is made gas tight. This hermeticity can be obtained by various known means, for example by welding the tubes adjacent to each other along a generator or, more simply and more economically, by sealing the intervals 16 using a refractory putty, for example a "SERBAT" putty or the like.

Sur le quatrième côté 1d du caisson 1 et sur les parties restantes des côtés 1b et 1c, la paroi verticale du caisson 1 est formée par une tôle 17, dont les bords verticaux d'extrémité 17b et 17c sont raccordés de manière étanche au gaz aux tubes extrêmes 3b₁ et 3c₁ de la série de tubes 3a, 3b, 3c. Par exemple, les bords verticaux 17b et 17c peuvent être fixés respectivement aux tubes 3b₁ et 3c₁ par soudage ou une liaison étanche entre ces bords et ces tubes peut être obtenue par exemple au moyen d'un mastic réfractaire du genre sus-indiqué.On the fourth side 1d of the box 1 and on the remaining parts of the sides 1b and 1c, the vertical wall of the box 1 is formed by a sheet 17, whose vertical end edges 17b and 17c are connected in a gas-tight manner to the extreme tubes 3b₁ and 3c₁ from the series of tubes 3a, 3b, 3c. For example, the edges vertical 17b and 17c can be fixed respectively to the tubes 3b₁ and 3c₁ by welding or a tight connection between these edges and these tubes can be obtained for example by means of a refractory mastic of the kind indicated above.

Le restant des tubes 3, c'est-à-dire les tubes 3d sont arrangés en plusieurs colonnes disposées parallèlement au quatrième côté 1d du caisson 1 comme cela est bien visible dans la figure 4. Le foyer 2 est aménagé dans l'espace compris entre l'arrangement de tubes 3d et les tubes 3a formant le côté 1a du caisson 1. A la différence du brûleur de la chaudière connue des figures 1 et 2, le brûleur 8 de la chaudière de la présente invention ne comporte des ajutages que sur une seule face et il est disposé dans le foyer 2 de telle façon que ses ajutages soient orientés en direction de l'arrangement de tubes 3d. L'espace 9 dans lequel les fumées sont collectées après être passées entre les tubes 3d est aménagé entre l'arrangement de tubes 3d et la tôle 17 formant le quatrième côté 1d du caisson. La buse 11 d'évacuation des fumées est raccordée à la tôle 17, par exemple au milieu de celle-ci.The rest of the tubes 3, that is to say the 3d tubes are arranged in several columns arranged parallel to the fourth side 1d of the box 1 as is clearly visible in Figure 4. The hearth 2 is arranged in the space included between the arrangement of 3d tubes and the tubes 3a forming the side 1a of the casing 1. Unlike the burner of the boiler known in FIGS. 1 and 2, the burner 8 of the boiler of the present invention only has nozzles on only one side and it is arranged in the hearth 2 so that its nozzles are oriented in the direction of the arrangement of 3d tubes. The space 9 in which the fumes are collected after passing between the 3d tubes is arranged between the arrangement of 3d tubes and the sheet 17 forming the fourth side 1d of the box. The smoke evacuation nozzle 11 is connected to the sheet 17, for example in the middle of the latter.

Claims (2)

  1. A boiler comprising a substantially parallelepiped tank (1) in which are mounted a combustion chamber (2) and an assembly of vertical tubes (3) acting as a heating and heat exchange surface between the combustion chamber and the water to be heated and circulating in the tubes and further comprising two respectively upper and lower manifolds (4 and 5) into which open out the ends of the tubes (3), a pipe (6) for supplying water to be heated and a pipe (7) for carrying away hot water, the said combustion chamber comprising a gas burner (8) comprising a large number of jets orientated horizontally towards the said tubes (3), a space (9) being disposed between the outer tubes of the said tube assembly (3) and the vertical wall of the tank (1) to collect the burned gases and smoke after they have passed through the said tubes, the said smoke being evacuated through a nozzle (11) connected to the said tank wall, characterised in that on a first side (1a) of the tank (1) and over the major part of the second and third sides (1b and 1c) of the tank adjacent to the first side, the vertical wall of the tank is formed by a series of tubes (3a, 3b, 3c) forming part of the said tube assembly (3), each gap (16) between adjacent tubes in the said series of tubes being as small as possible and being rendered gas-tight, in that on a fourth side (1d) of the tank (1) opposite the first side (1a) and on the remaining parts of the second and third sides (1b and 1c), the vertical wall of the tank is formed by a plate (17) of which the vertical end walls (17b and 17c) are connected in gas-tight fashion to the end tubes (3b and 3c) of the said series of tubes (3a, 3b, 3c) in that the smoke discharge jet (11) is connected to the said plate (17) on a fourth side (1d) of the tank (1), in that the balance (3d) of the tubes (3) of the said tube assembly is arranged in a plurality of columns disposed parallel with the fourth side (1d) of the tank, in that the said smoke-collecting space (9) is disposed between this tube arrangement (3d) and the said plate (17) and in that the burner (8) is disposed in the combustion chamber (2) which is provided between the said tube arrangement (3d) and the tubes (3a) forming the first side (1a) of the tank (1), the nozzles of the burner being directed towards the said tube arrangement (3d).
  2. A boiler according to Claim 1, characterised in that the gaps (16) between the adjacent tubes in the tube series (3a, 3b, 3c) forming a part of the vertical wall of the tank (1) are rendered gas-tight by a refractory sealing compound.
EP19920402285 1992-08-13 1992-08-13 Gas fired water-tube boiler Expired - Lifetime EP0583525B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1992600149 DE69200149T2 (en) 1992-08-13 1992-08-13 Gas powered water tube boiler.
ES92402285T ES2056697T3 (en) 1992-08-13 1992-08-13 GAS BOILERS FOR WATER PIPES.
EP19920402285 EP0583525B1 (en) 1992-08-13 1992-08-13 Gas fired water-tube boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19920402285 EP0583525B1 (en) 1992-08-13 1992-08-13 Gas fired water-tube boiler

Publications (2)

Publication Number Publication Date
EP0583525A1 EP0583525A1 (en) 1994-02-23
EP0583525B1 true EP0583525B1 (en) 1994-05-25

Family

ID=8211696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920402285 Expired - Lifetime EP0583525B1 (en) 1992-08-13 1992-08-13 Gas fired water-tube boiler

Country Status (3)

Country Link
EP (1) EP0583525B1 (en)
DE (1) DE69200149T2 (en)
ES (1) ES2056697T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1314175A (en) * 1962-01-23 1963-01-04 Watertight or sufficiently watertight partitions for heat exchange chambers
FR1440070A (en) * 1965-04-14 1966-05-27 Advanced boiler
CH592850A5 (en) * 1974-08-07 1977-11-15 Carosso Victor Joseph Multi-tubular boiler for producing superheated water - with longitudinal and transverse collectors connected by water tubes joined together
FR2645255B1 (en) * 1989-03-28 1991-07-05 Vidalenq Maurice WATER TUBE BOILER AND HEATING SYSTEM EQUIPPED WITH SUCH A BOILER

Also Published As

Publication number Publication date
DE69200149D1 (en) 1994-06-30
ES2056697T3 (en) 1994-10-01
EP0583525A1 (en) 1994-02-23
DE69200149T2 (en) 1994-09-08

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