EP0390656A1 - Boiler with water tubes and heating installation equipped with such a boiler - Google Patents

Boiler with water tubes and heating installation equipped with such a boiler Download PDF

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Publication number
EP0390656A1
EP0390656A1 EP90400800A EP90400800A EP0390656A1 EP 0390656 A1 EP0390656 A1 EP 0390656A1 EP 90400800 A EP90400800 A EP 90400800A EP 90400800 A EP90400800 A EP 90400800A EP 0390656 A1 EP0390656 A1 EP 0390656A1
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EP
European Patent Office
Prior art keywords
tubes
boiler
water
hearth
heating
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.)
Withdrawn
Application number
EP90400800A
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German (de)
French (fr)
Inventor
Maurice Vidalenq
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Individual
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Individual
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Publication of EP0390656A1 publication Critical patent/EP0390656A1/en
Withdrawn legal-status Critical Current

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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
    • 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
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters

Definitions

  • the present invention relates to a water tube boiler and a heating installation equipped with such a boiler.
  • the most common current central heating boilers comprise a series of vertical tubes constituting the heating and exchange surface between the hearth and the water to be heated circulating in the tubes.
  • the ends of these tubes are connected to two upper and lower manifolds, respectively. They also include a gas burner consisting of a ramp through which the air-gas mixture escapes, the flames of which hang on the periphery of this ramp. The products of combustion escape horizontally around the tubes and are collected in a circular smoke box towards an exhaust nozzle.
  • a heating installation equipped with these boilers is characterized schematically by connecting tubes connected to the upper and lower manifolds, themselves connected to an exchanger-mixer with a recycling pump which aims to ensure water circulation very important, so that all the vertical tubes of the boiler are individually well irrigated.
  • the various circuits of the heating installation are connected to the radiators, with interposed pumps.
  • an exchanger-mixer is used with its circulation pump ensuring a constant flow of water circulating in the boiler.
  • the object of the invention is to design a boiler which eliminates the drawback of involving the use of primary recycling of the water in the installation with the use of the exchanger-mixer.
  • the basic principle of this new boiler consists in ensuring a circulation of water in the tubes no longer dependent on the circulation of water from the radiators.
  • the present invention uses the driving force of the known thermosyphon system.
  • the invention therefore provides a water tube boiler which is characterized by two independent water circulations, one ensured through the upper collector to which the flow pipes are connected and return of the heating circuits, the other ensured by thermosiphonic action inside the tubes.
  • the heating installation shown in Figure 1 is equipped with a boiler 2a corresponding to the prior art widely described above with: a box 3 in which are housed the burner 4 and the series of vertical tubes 5 constituting the heating surface and exchange between hearth 2 and the water to be heated circulating in the tubes 5, the circular smoke box 6, the exhaust base 7, the upper collectors 3a and lower 3b, the flow tubes 8 and return 9, the exchanger-mixer 10, the pump 9a, the circuits of heating 11 with radiators 12 and pumps 12a.
  • a box 3 in which are housed the burner 4 and the series of vertical tubes 5 constituting the heating surface and exchange between hearth 2 and the water to be heated circulating in the tubes 5, the circular smoke box 6, the exhaust base 7, the upper collectors 3a and lower 3b, the flow tubes 8 and return 9, the exchanger-mixer 10, the pump 9a, the circuits of heating 11 with radiators 12 and pumps 12a.
  • the heating installation shown in Figure 2 is equipped with a boiler 2b according to the invention.
  • This boiler 2b is constructed by using the bundle of tubes 5 as drawn in FIG. 1, but by connecting the flow pipe 13 and the return pipe 14 to the upper manifold 3a as drawn in FIG. 2.
  • the circulation of water in this collector 3a (arrows f1) becomes independent of the circulation of the water in the tubes 5.
  • a self-circulation of water in the tubes 5 is established by the phenomenon of the tube-to-tube thermosyphon.
  • the water in the tubes 5 placed near the burner 4 is brought to a temperature higher than that of the water in the tubes 5 which are further away from it.
  • the circulation is ascending in the tubes 5 near the burner 4 and descending in the tubes 5 which are further away from it, as indicated by the arrows f2 in FIG. 2.
  • the circulation water 13 and 14 of the installation is mixed with very hot water coming from the tubes 5.
  • the collector 3a acts as an exchanger-mixer replacing that 10 of FIG. 1 which becomes unnecessary.
  • the lower manifold 3b has the function of ensuring the thermosiphonic connection between the tubes 5.
  • a drain valve 15 is provided.
  • a fan-extractor 7a is advantageously provided in the evacuation nozzle 7 to ensure a vacuum in the hearth 2.
  • this boiler has two independent internal hydraulic circulations, one concerning the installation of radiators, the other thermosiphonic of tubes 5.
  • a heating installation can be equipped with several boilers 2b in accordance with the invention which can be connected together by flanges 25 at their upper manifolds 3a to form a single collector-exchanger, as shown diagrammatically in FIG. 3.

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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)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

The boiler with water tubes comprises a casing (3), in which are mounted a series of vertical tubes (5) serving as a surface for heating and exchange between the furnace (2) and the water to be heated which circulates in the tubes (5), and two, respectively upper (3a) and lower (3b) collectors, into which the tubes (5) open. The boiler (2b) comprises two independent water circulations, one effected through the upper collector (3a) forming an exchanger/mixer, to which the outward (13) and return (14) pipes of the heating circuits are connected, and the other effected by thermosiphonic action inside the tubes (5) and the upper (3a) and lower (3b) collectors. <IMAGE>

Description

La présente invention concerne une chaudière à tubes d'eau et une installation de chauffage équipée d'une telle chaudière.The present invention relates to a water tube boiler and a heating installation equipped with such a boiler.

Les chaudière de chauffage central actuelles les plus répandues comprennent une série de tubes verticaux constituant la surface de chauffe et d'échange entre le foyer et l'eau à échauffer circulant dans les tubes. Les extrémités de ces tubes sont raccordées sur deux collecteurs supérieur et inférieur, respectivement. Elles comprennent également un brûleur à gaz constitué d'une rampe par où s'échappe le mélange air-gaz dont les flammes s'accrochent à la périphérie de cette rampe. Les produits de combustion s'évacuent horizontalement autour des tubes et sont collectés dans une boîte à fumée circulaire vers une buse d'évacuation.The most common current central heating boilers comprise a series of vertical tubes constituting the heating and exchange surface between the hearth and the water to be heated circulating in the tubes. The ends of these tubes are connected to two upper and lower manifolds, respectively. They also include a gas burner consisting of a ramp through which the air-gas mixture escapes, the flames of which hang on the periphery of this ramp. The products of combustion escape horizontally around the tubes and are collected in a circular smoke box towards an exhaust nozzle.

Une installation de chauffage équipée de ces chaudières se caractérise schématiquement par des tubes de liaison raccordés sur les collecteurs supérieur et inférieur, eux-mêmes raccordés sur un échangeur-­mélangeur avec une pompe de recyclage qui a pour but d'assurer une circulation d'eau très importante, afin que tous les tubes verticaux de la chaudière soient individuellement bien irrigués. Les divers circuits de l'installation de chauffage sont raccordés aux radiateurs, avec pompes intercalées.A heating installation equipped with these boilers is characterized schematically by connecting tubes connected to the upper and lower manifolds, themselves connected to an exchanger-mixer with a recycling pump which aims to ensure water circulation very important, so that all the vertical tubes of the boiler are individually well irrigated. The various circuits of the heating installation are connected to the radiators, with interposed pumps.

Il est essentiel que le débit d'eau à faire circuler dans la chaudière soit rigoureusement constant afin que la vitesse de l'eau dans chaque tube soit supérieure au paramètre de Reynolds.It is essential that the water flow to circulate in the boiler is rigorously constant so that the speed of the water in each tube is greater than the Reynolds parameter.

Si l'installation ne comporte qu'un circuit, aucun problème ne se pose, le débit d'eau de l'installation étant réglé une fois pour toutes.If the installation has only one circuit, no problem arises, the water flow of the installation being adjusted once and for all.

Si l'installation comporte plusieurs circuits, ce qui est le cas des installations importantes, l'arrêt de la circulation d'un ou plusieurs de ceux-ci fait varier le débit global de l'eau pénétrant dans la chaudière, donc dans les tubes, avec pour résultat des points de vaporisation possibles.If the installation has several circuits, which is the case for large installations, stopping the circulation of one or more of them varies the overall flow rate of the water entering the boiler, therefore in the tubes , resulting in possible vaporization points.

Pour parer à cet inconvénient on utilise un échangeur-mélangeur, cité plus haut, avec sa pompe de circulation assurant un débit constant de l'eau circulant dans la chaudière.To overcome this drawback, an exchanger-mixer, mentioned above, is used with its circulation pump ensuring a constant flow of water circulating in the boiler.

La nécessité d'introduire cet échangeur-mélangeur dans l'installation pèse sur le prix de revient global pour environ 20%, auquel il faut ajouter les frais de consommation d'électricité de la pompe et de sa maintenance.The need to introduce this exchanger-mixer into the installation weighs on the overall cost price for around 20%, to which must be added the costs of electricity consumption of the pump and its maintenance.

Le but de l'invention est de concevoir une chaudière qui supprime l'inconvénient de faire intervenir l'emploi d'un recyclage primaire de l'eau de l'installation avec utilisation de l'échangeur-mélangeur.The object of the invention is to design a boiler which eliminates the drawback of involving the use of primary recycling of the water in the installation with the use of the exchanger-mixer.

Le principe de base de cette nouvelle chaudière consiste à assurer une circulation de l'eau dans les tubes ne dépendant plus de la circulation de l'eau des radiateurs.The basic principle of this new boiler consists in ensuring a circulation of water in the tubes no longer dependent on the circulation of water from the radiators.

Pour arriver à ce résultat, la présente invention utilise la force motrice du système connu du thermosiphon.To achieve this result, the present invention uses the driving force of the known thermosyphon system.

L'invention propose donc une chaudière à tubes d'eau qui se caractérise par deux circulations d'eau indépendantes, l'une assurée au travers du collecteur supérieur auquel sont branchés les conduits départ et retour des circuits de chauffage, l'autre assurée par action thermosiphonique à l'intérieur des tubes.The invention therefore provides a water tube boiler which is characterized by two independent water circulations, one ensured through the upper collector to which the flow pipes are connected and return of the heating circuits, the other ensured by thermosiphonic action inside the tubes.

En conséquence, l'installateur fera l'économie d'installation du circuit primaire de l'échangeur-­mélangeur et lui permettra de calculer son installation en faisant abstraction du débit d'eau minimum imposé pour les chaudières actuellement fabriquées.Consequently, the installer will save on the installation of the primary circuit of the heat exchanger-mixer and will allow him to calculate his installation by disregarding the minimum water flow rate imposed for the boilers currently manufactured.

La condensation sur les tubes, provoquée par "le point de rosée" résultant de la basse température de l'eau du retour de l'installation entrant dans une chaudière selon l'art antérieur, entraîne toujours une oxydation sur l'extérieur des tubes et une usure prématurée.Condensation on the tubes, caused by "dew point" resulting from the low temperature of the water returning from the installation entering a boiler according to the prior art, always causes oxidation on the outside of the tubes and premature wear.

Selon un avantage important de l'invention, cette condensation est supprimée, l'eau du retour se mélangeant immédiatement à l'eau très chaude provenant des tubes.According to an important advantage of the invention, this condensation is eliminated, the return water immediately mixing with the very hot water coming from the tubes.

D'autres caractéristiques, avantages et détails de l'invention vont être décrits ci-après en référence aux dessins annexés donnés à titre d'exemple et dans lesquels:

  • la figure 1 est une vue schématique d'une installation de chauffage équipée d'une chaudière selon l'art antérieur,
  • la figure 2 est une vue schématique d'une installation de chauffage équipée d'une chaudière conforme à l'invention, et
  • la figure 3 est une vue schématique d'une installation de chauffage équipée de plusieurs chaudières conformes à l'invention.
Other characteristics, advantages and details of the invention will be described below with reference to the attached drawings given by way of example and in which:
  • FIG. 1 is a schematic view of a heating installation equipped with a boiler according to the prior art,
  • FIG. 2 is a schematic view of a heating installation equipped with a boiler according to the invention, and
  • Figure 3 is a schematic view of a heating installation equipped with several boilers according to the invention.

L'installation de chauffage représentée à la figure 1 est équipée d'une chaudière 2a correspondant à l'art antérieur largement décrit précédemment avec: un caisson 3 dans lequel sont logés le brûleur 4 et la série de tubes verticaux 5 constituant la surface de chauffe et d'échange entre le foyer 2 et l'eau à échauffer circulant dans les tubes 5, la boîte à fumée circulaire 6, la base d'évacuation 7, les collecteurs supérieur 3a et inférieur 3b, les tubes départ 8 et retour 9, l'échangeur-mélangeur 10, la pompe 9a, les circuits de chauffage 11 avec les radiateurs 12 et les pompes 12a.The heating installation shown in Figure 1 is equipped with a boiler 2a corresponding to the prior art widely described above with: a box 3 in which are housed the burner 4 and the series of vertical tubes 5 constituting the heating surface and exchange between hearth 2 and the water to be heated circulating in the tubes 5, the circular smoke box 6, the exhaust base 7, the upper collectors 3a and lower 3b, the flow tubes 8 and return 9, the exchanger-mixer 10, the pump 9a, the circuits of heating 11 with radiators 12 and pumps 12a.

L'installation de chauffage représentée à la figure 2 est équipée d'une chaudière 2b conforme à l'invention. Cette chaudière 2b est construite en utilisant le faisceau de tubes 5 comme dessiné à la figure 1, mais en raccordant le conduit départ 13 et le conduit retour 14 sur le collecteur supérieur 3a comme dessiné à la figure 2. La circulation de l'eau dans ce collecteur 3a (flèches f1) devient indépendante de la circulation de l'eau des tubes 5.The heating installation shown in Figure 2 is equipped with a boiler 2b according to the invention. This boiler 2b is constructed by using the bundle of tubes 5 as drawn in FIG. 1, but by connecting the flow pipe 13 and the return pipe 14 to the upper manifold 3a as drawn in FIG. 2. The circulation of water in this collector 3a (arrows f1) becomes independent of the circulation of the water in the tubes 5.

D'autre part, une auto-circulation de l'eau dans les tubes 5 s'établit par le phénomène du thermosiphon de tube à tube. L'eau des tubes 5 placés près du brûleur 4 est portée à une température supérieure à celle de l'eau des tubes 5 qui en sont plus éloignés.On the other hand, a self-circulation of water in the tubes 5 is established by the phenomenon of the tube-to-tube thermosyphon. The water in the tubes 5 placed near the burner 4 is brought to a temperature higher than that of the water in the tubes 5 which are further away from it.

La circulation est ascendante dans les tubes 5 près du brûleur 4 et descendante dans les tubes 5 qui en sont plus éloignés, comme indiqué par les flèches f2 de la figure 2.The circulation is ascending in the tubes 5 near the burner 4 and descending in the tubes 5 which are further away from it, as indicated by the arrows f2 in FIG. 2.

Dans le collecteur 3a s'opère le mélange de l'eau de circulation 13 et 14 de l'installation et de l'eau très chaude provenant des tubes 5.In the manifold 3a, the circulation water 13 and 14 of the installation is mixed with very hot water coming from the tubes 5.

Le collecteur 3a fait office d'échangeur-mélangeur en remplacement de celui 10 de la figure 1 qui devient inutile.The collector 3a acts as an exchanger-mixer replacing that 10 of FIG. 1 which becomes unnecessary.

Dans cette nouvelle chaudière 2b le collecteur inférieur 3b a pour fonction d'assurer la liaison thermosiphonique entre les tubes 5. Un robinet de vidange 15 est prévu.In this new boiler 2b, the lower manifold 3b has the function of ensuring the thermosiphonic connection between the tubes 5. A drain valve 15 is provided.

L'installation simplifiée sur la figure 2 ne comporte plus le mélangeur 10.The simplified installation in FIG. 2 no longer includes the mixer 10.

Il est avantageusement prévu un ventilateur-­extracteur 7a dans la buse d'évacuation 7 pour assurer une dépression dans le foyer 2.A fan-extractor 7a is advantageously provided in the evacuation nozzle 7 to ensure a vacuum in the hearth 2.

En résumé, cette chaudière comporte deux circulations hydrauliques internes indépendantes, l'une concernant l'installation des radiateurs, l'autre thermosiphonique des tubes 5.In summary, this boiler has two independent internal hydraulic circulations, one concerning the installation of radiators, the other thermosiphonic of tubes 5.

Une installation de chauffage peut être équipée de plusieurs chaudières 2b conformes à l'invention qui peuvent être raccordées entre elles par des brides 25 au niveau de leurs collecteurs supérieurs 3a pour former un collecteur-échangeur unique, comme représenté schématiquement à la figure 3.A heating installation can be equipped with several boilers 2b in accordance with the invention which can be connected together by flanges 25 at their upper manifolds 3a to form a single collector-exchanger, as shown diagrammatically in FIG. 3.

Claims (6)

1. - Chaudière à tubes d'eau comprenant un caisson dans lequel se trouvent le foyer et une série de tubes verticaux servant de surface de chauffe et d'échange entre le foyer et l'eau à échauffer circulant dans ces tubes, deux collecteurs respectivement supérieur et inférieur dans lesquels débouchent les tubes, caractérisée en ce qu'elle comprend deux circulations d'eau indépendantes, l'une assurée au travers du collecteur supérieur (3a) auquel sont branchés les conduits départ (13) et retour (14) des circuits de chauffage (11), l'autre assurée par action thermosiphonique à l'intérieur des tubes (5) et les collecteurs supérieur (3a) et inférieur (3b).1. - Boiler with water tubes comprising a box in which the hearth is located and a series of vertical tubes serving as a heating and exchange surface between the hearth and the water to be heated circulating in these tubes, two collectors respectively upper and lower into which the tubes open, characterized in that it comprises two independent water circulations, one ensured through the upper collector (3a) to which the outgoing (13) and return (14) conduits are connected heating circuits (11), the other ensured by thermosiphonic action inside the tubes (5) and the upper (3a) and lower (3b) manifolds. 2.- Chaudière selon la revendication 1, caractérisée en ce que le collecteur supérieur (3a) fait office d'échangeur-mélangeur.2. A boiler according to claim 1, characterized in that the upper collector (3a) acts as an exchanger-mixer. 3.- Chaudière selon la revendication 1 ou 2, caractérisée en ce que le collecteur inférieur (3b) a pour fonction d'assurer la liaison thermosiphonique entre les tubes 5.3.- Boiler according to claim 1 or 2, characterized in that the lower collector (3b) has the function of ensuring the thermosiphonic connection between the tubes 5. 4.- Chaudière selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comprend un brûleur à gaz (4) avec une rampe 4a, les gaz de combustion s'écoulant horizontalement jusqu'à une boîte à fumée (6) qui communique avec une buse d'évacuation (7), la température de l'eau dans les tubes (5) décroissant au fur et à mesure de leur éloignement du foyer pour accélérer l'action thermosiphonique à l'intérieur des tubes (5).4.- Boiler according to any one of claims 1 to 3, characterized in that it comprises a gas burner (4) with a ramp 4a, the combustion gases flowing horizontally to a smoke box ( 6) which communicates with an evacuation nozzle (7), the temperature of the water in the tubes (5) decreasing as they move away of the hearth to accelerate the thermosiphonic action inside the tubes (5). 5.- Chaudière selon la revendication 4, caractérisée en ce que dans la buse d'évacuation (7) est logé un ventilateur-extracteur (7a) assurant une dépression dans le foyer (2).5.- Boiler according to claim 4, characterized in that in the discharge nozzle (7) is housed a fan-extractor (7a) ensuring a vacuum in the hearth (2). 6.- Installation de chauffage du type comprenant plusieurs chaudières telles que définies selon l'une des revendications précédentes, caractérisée en ce que les chaudières (2b) peuvent être raccordées entre elles par des brides (25) au niveau de leurs collecteurs supérieurs (3a) pour former un collecteur-échangeur unique.6.- Heating installation of the type comprising several boilers as defined according to one of the preceding claims, characterized in that the boilers (2b) can be connected to each other by flanges (25) at their upper collectors (3a ) to form a single collector-exchanger.
EP90400800A 1989-03-28 1990-03-23 Boiler with water tubes and heating installation equipped with such a boiler Withdrawn EP0390656A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903980 1989-03-28
FR8903980A FR2645255B1 (en) 1989-03-28 1989-03-28 WATER TUBE BOILER AND HEATING SYSTEM EQUIPPED WITH SUCH A BOILER

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EP0390656A1 true EP0390656A1 (en) 1990-10-03

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EP90400800A Withdrawn EP0390656A1 (en) 1989-03-28 1990-03-23 Boiler with water tubes and heating installation equipped with such a boiler

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US (1) US5060601A (en)
EP (1) EP0390656A1 (en)
FR (1) FR2645255B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583525A1 (en) * 1992-08-13 1994-02-23 Maurice Vidalenq Gas fired water-tube boiler
RU2722493C1 (en) * 2020-01-17 2020-06-01 Ришат Сафуанович Шаймухаметов Boiler with forced circulation
RU2767418C1 (en) * 2021-03-22 2022-03-17 Ришат Сафуанович Шаймухаметов Water-tube boiler with forced circulation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711178A1 (en) * 1997-03-18 1998-09-24 Wilo Gmbh Pump in the hot water circuit of a central heating system
DE19909195A1 (en) * 1999-03-03 2000-09-07 Wilo Gmbh Hydraulic switch
ITVI20010081A1 (en) * 2001-04-12 2002-10-12 Talin Srl CENTRALIZED HEATING RADIATOR
GB0124669D0 (en) * 2001-10-13 2001-12-05 Robertson Alastair Improved secondary heat exchanger for water boiler
AU2011320032B2 (en) * 2010-10-29 2016-11-03 Kenneth John Tucker Heating apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096022A5 (en) * 1970-06-08 1972-02-11 Miller Avy
DE2925980A1 (en) * 1979-06-27 1981-02-12 Ebara Corp Boiler with reduced pollution and noise - has pair of annular chambers connected by tubular wall formed of water tubes containing smoke tubes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US585545A (en) * 1897-06-29 watson
FR2026997B2 (en) * 1968-12-24 1974-08-09 Oschatz Gmbh
FR2512179A1 (en) * 1981-08-27 1983-03-04 Sdecc FORCE DRAFT DRY GAS BOILER WITH MICROPROCESSOR CONTROL

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096022A5 (en) * 1970-06-08 1972-02-11 Miller Avy
DE2925980A1 (en) * 1979-06-27 1981-02-12 Ebara Corp Boiler with reduced pollution and noise - has pair of annular chambers connected by tubular wall formed of water tubes containing smoke tubes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583525A1 (en) * 1992-08-13 1994-02-23 Maurice Vidalenq Gas fired water-tube boiler
RU2722493C1 (en) * 2020-01-17 2020-06-01 Ришат Сафуанович Шаймухаметов Boiler with forced circulation
RU2767418C1 (en) * 2021-03-22 2022-03-17 Ришат Сафуанович Шаймухаметов Water-tube boiler with forced circulation

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Publication number Publication date
FR2645255B1 (en) 1991-07-05
FR2645255A1 (en) 1990-10-05
US5060601A (en) 1991-10-29

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