EP0329508A1 - Central heating installation with a sanitary hot water circuit - Google Patents

Central heating installation with a sanitary hot water circuit Download PDF

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Publication number
EP0329508A1
EP0329508A1 EP89400269A EP89400269A EP0329508A1 EP 0329508 A1 EP0329508 A1 EP 0329508A1 EP 89400269 A EP89400269 A EP 89400269A EP 89400269 A EP89400269 A EP 89400269A EP 0329508 A1 EP0329508 A1 EP 0329508A1
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EP
European Patent Office
Prior art keywords
tube
heating
tubes
water
circuit
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Granted
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EP89400269A
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German (de)
French (fr)
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EP0329508B1 (en
Inventor
René Prévot
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ELM Leblanc SAS
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ELM Leblanc SAS
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Priority to AT89400269T priority Critical patent/ATE73918T1/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
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/526—Pipes in pipe heat exchangers for sanitary water
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F28D7/087—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions assembled in arrays, each array being arranged in the same plane

Definitions

  • the present invention relates to a central heating installation provided with a hot water circuit for domestic use or sanitary water and comprising a heating device comprising an envelope or ferrule, the lower part of which is provided with a burner, in particular of a gas burner and on which a pipe is wound or not in which the water circulates from the heating circuit, this circuit then passing through a bundle of fins located at the upper part of the envelope on the trajectory of the hot gases escaping from the latter to then be directed to a discharge pipe.
  • the domestic hot water circuit comprises a second conduit in which the heating water circulates, and which crosses the bundle of fins in intimate thermal contact with the first conduit in which circulates the heating water.
  • French Patent No. 1,352,607 describes such a heating installation in which the intimate thermal connection between the first conduit, in which the water from the heating circuit circulates, and the second conduit in which the water from the sanitary circuit circulates, is obtained by joining the two conduits so that they constitute a double-passage tube which crosses the bundle of fins, this tube having a cross section of suitable shape, for example circular or elliptical.
  • BE-A-671 097 also discloses double duct heating installations in which the intimate thermal contact between the two ducts, respectively of the heating water circuit and the domestic water circuit, is obtained by incorporating one of the conduits in the other, these two conduits then being produced in the form of two tubes, possibly concentric, passing through the bundle of fins of the heating appliance, the external surface of the internal tube being applied joined against the inner surface of the outer tube.
  • FR A 1 484 821 - to produce a heat exchanger in which the heating circuit, in its crossing of the fin bundle, is produced in the form of a plurality of flattened tubes connected to each other by elbows and the sanitary water circuit is produced in the form of a tube folded in an S or a pin shape and arranged inside the flattened tubes constituting the duct of the heating circuit.
  • the present invention proposes to provide an improved installation which does not have the drawbacks mentioned above.
  • a central heating installation provided with a hot water circuit for domestic use, or sanitary water, which comprises a heating device comprising a ferrule whose inner part is provided with a burner, in particular of a gas burner, and on which a heating circuit duct is wound or not, which then crosses a bundle of fins located at the upper part of the shell, on the hot gas path, the heating circuit in its crossing of the fin bundle being produced in the form of a plurality of flattened tubes connected to each other by elbows and the domestic hot water circuit being produced in the form of a tube shaped as a pin or serpentine and disposed inside said flattened tubes when crossing the fin bundle, characterized in that: - the tubes of the domestic hot water circuit, arranged in a pin or serpentine in the flattened tubes of the heating water circuit are not in contact with the latter and - The dimensions of said flattened tubes and said tubes are chosen so that the volume of water contained between the flattened tubes and the convolutions of the hairpin tubes is as small as possible.
  • each end of the tubes flattened externally to the fin bundle an end piece which is brazed or welded on said end so as to close it, this end piece having the form of a plate provided with 'a first opening for the connection of the bent tube, ensuring the connection between the coils or pins of the sanitary water conduit and a second opening for the connection of the bent tube which ensures the connection between two consecutive flattened tubes.
  • a transmission surface is provided. thermal between the convolutions of the tube wound in a pin or in a spiral, inside the flattened tubes.
  • said thermal transmission surface is produced in the form of a metal plate comprising partially cylindrical parts matching the shape of the tube shaped as a pin, on which they come to engage, connected by vertical flat parts.
  • the two conduits have an intimate heat exchange in the upper part of the heating appliance where the fin bundle 18 is positioned (part shown in FIGS. 1 and 2).
  • the duct 10 ′ of the circuit in which the heating water circulates is in the form of a plurality of flattened tubes such as 10 ′, which each have a oval cross section, or substantially oval, the major axis of which is arranged vertically.
  • the different flattened tubes 10 ′ arranged in parallel are connected at their ends by bent tubes such as 14.
  • the sanitary water conduit 12 consists of a tube preferably of circular cross section and it is disposed inside the flattened tubes such as 10 ′ which it crosses in the configuration of a pin or a coil so as to considerably increase the heat exchange surface, between the heating water which circulates in the flattened tubes 10 ′ and the sanitary water contained in the tube in pin configuration 12 ′, in its crossing of the flattened tube .
  • each tube 10 ′ constituting a portion of the heating water circuit in its passage through the fin bundle 18, receives a portion in the pin configuration 12 ′ of the water conduit sanitary.
  • the positioning of the tube section in the pin configuration 12 ′ in the flattened tube 10 ′ constituting the heating water conduit, is carried out so that there is no contact between the walls of the tubes 12 ′ and 10 ′.
  • the section of the tube in the pin configuration 12 ′ is chosen so that the volume of water contained between the flattened tube 10 ′ and the pin or coil 12 ′ is as small as possible so that the water circulating in the sanitary circuit 12 takes all the calories from the heating water, without it being necessary to put the accelerator of the heating circuit into operation, the absence of contact between the walls of the tubes 10 ′ and 12 ′ preventing any boiling of the domestic water circulating in the tube 12 ′.
  • the ends of the flattened tubes 10 ′ are closed off according to the invention using end pieces 20 in the form of plates (FIGS. 3 and 4), which have an opening 22 for connecting the bent tubes 16 which provide the connection between two consecutive coils or pins 12 ′ and a second opening 24 for the connection of bent tubes 14 ensuring the connection between two flattened tubes 10 ′ consecutive.
  • the end plates 20 are preferably brazed on the ends of the tubes 10 ′.
  • FIG. 5 illustrates an exemplary embodiment of a fin 18.
  • This comprises a series of openings such as 26, the shape of which corresponds to the cross section of the flattened tubes 10 ′, these fins being successively threaded on the network of tubes parallel 10 ′ on which they are brazed in a known manner (see FIG. 2).
  • the tube 12 ′ arranged in a pin or serpentine is produced in a one-piece structure with the plate 28, the tube and plate assembly being stamped in the form of two half-shells 34 , 34 ′ which are connected by their joint plane 36, and secured by a welding process without filler metal, for example by pressure, ultrasound or others.
  • the invention provides a heating installation ensuring perfect heat exchange between the incorporated circuits of heating water and sanitary water, thanks to a large thermal contact surface obtained without physical contact of the circuits, by the relative arrangement of the two conduits, by the hairpin configuration of the sanitary water circulation conduit tube passing through the flattened tube of the heating water conduit, by the small volume of water contained between each flattened tube and the tube arranged in a pin that it contains and preferably thanks to the arrangement of plastic rings threaded on the tube constituting the sanitary water circuit which keep the latter away from the tube constituting the circuit heating water by eliminating all sources of hydraulic vibration.

Abstract

Central heating installation equipped with a domestic hot water, or sanitary water, circuit, which comprises a heating apparatus comprising a shell, the internal part of which is equipped with a burner, in particular a gas burner, and on which there is rolled up or not a pipe of the heating circuit, which then passes through a bank of fins situated on the upper part of the shell, on the trajectory of the hot gases, the heating circuit in passing through the bank of fins being made in the form of a large number of flattened tubes connected to one another by elbows and the sanitary hot water circuit being made in the form of a pin-shaped or serpentine-shaped tube and arranged inside said flattened tubes on passing through the bank of fins, characterised in that: - the tubes (12') of the sanitary hot water circuit, arranged in the manner of a pin or of a serpentine in the flattened tubes (10') of the heating water circuit, are not in contact with the latter and - the dimensions of said flattened tubes (10') and of said tubes (12') are chosen in such a manner that the volume of water contained between the flattened tubes and the convolutions of the tubes in the form of a pin is as small as possible. <IMAGE>

Description

La présente invention est relative à une installation de chauffage central munie d'un circuit d'eau chaude à usage domestique ou eau sanitaire et comprenant un appareil de chauffage comportant une enveloppe ou virole, dont la partie inférieure est munie d'un brûleur, notamment d'un brûleur à gaz et sur laquelle vient s'enrouler ou non un conduit dans lequel circule l'eau du circuit de chauffage, ce circuit traversant ensuite un faisceau d'ailettes situées à la partie supérieure de l'enveloppe sur la trajectoire des gaz chauds qui s'échappent de cette dernière pour être dirigés ensuite vers une conduite d'évacuation.The present invention relates to a central heating installation provided with a hot water circuit for domestic use or sanitary water and comprising a heating device comprising an envelope or ferrule, the lower part of which is provided with a burner, in particular of a gas burner and on which a pipe is wound or not in which the water circulates from the heating circuit, this circuit then passing through a bundle of fins located at the upper part of the envelope on the trajectory of the hot gases escaping from the latter to then be directed to a discharge pipe.

On connaît des installations de chauffage central de ce type dans lesquelles le circuit d'eau chaude sanitaire comprend un second conduit dans lequel circule l'eau de chauffage, et qui traverse le faisceau d'ailettes en contact thermique intime avec le premier conduit dans lequel circule l'eau de chauffage.There are known central heating installations of this type in which the domestic hot water circuit comprises a second conduit in which the heating water circulates, and which crosses the bundle of fins in intimate thermal contact with the first conduit in which circulates the heating water.

Le brevet français N° 1 352 607 décrit une telle installation de chauffage dans laquelle la liaison thermique intime entre le premier conduit, dans lequel circule l'eau du circuit de chauffage, et le second conduit dans lequel circule l'eau du circuit sanitaire, est obtenue en accolant les deux conduits de façon qu'ils constituent un tube à double passage qui traverse le faisceau d'ailettes, ce tube présentant une section droite de forme appropriée, par exemple circulaire ou elliptique.French Patent No. 1,352,607 describes such a heating installation in which the intimate thermal connection between the first conduit, in which the water from the heating circuit circulates, and the second conduit in which the water from the sanitary circuit circulates, is obtained by joining the two conduits so that they constitute a double-passage tube which crosses the bundle of fins, this tube having a cross section of suitable shape, for example circular or elliptical.

On connaît également par BE-A-671 097 des installations de chauffage à double conduit dans lesquelles le contact thermique intime entre les deux conduits, respectivement du circuit de l'eau de chauffage et du circuit de l'eau sanitaire, est obtenu en incorporant l'un des conduits dans l'autre, ces deux conduits étant alors réalisés sous la forme de deux tubes, éventuellement concentriques, traversant le faisceau d'ailettes de l'appareil de chauffage, la surface extérieure du tube intérieur étant appliquée jointivement contre la surface intérieure du tube extérieur.BE-A-671 097 also discloses double duct heating installations in which the intimate thermal contact between the two ducts, respectively of the heating water circuit and the domestic water circuit, is obtained by incorporating one of the conduits in the other, these two conduits then being produced in the form of two tubes, possibly concentric, passing through the bundle of fins of the heating appliance, the external surface of the internal tube being applied joined against the inner surface of the outer tube.

L'expérience montre que dans les appareils de chauffage du type mentionné ci-dessus, il n'est pas possible d'obtenir un échange thermique parfait entre les deux conduits, car la surface de contact entre l'eau véhiculée par le conduit de chauffage et le conduit d'eau sanitaire placé dans le conduit de chauffage est trop limitée. Il en résulte qu'en cas de non circulation prolongée de l'eau dans l'un des conduits, sa température peut dépasser celle de l'eau en mouvement, la totalité des calories recueillies par l'eau ne circulant pas, n'étant pas transmises à l'eau circulant. Il en découle que, sur ces installations connues, il est nécessaire de faire circuler l'eau de chauffage par mise en route de l'accélérateur de circuit de chauffage pour obtenir un chauffage immédiat de l'eau sanitaire, ce qui oblige à prévoir un circuit séparé permettant cette circulation, lorsque l'installation de chauffage central n'est pas en service (période d'été).Experience shows that in heating devices of the type mentioned above, it is not possible to obtain perfect heat exchange between the two conduits, since the contact surface between the water conveyed by the heating conduit and the domestic water pipe placed in the heating pipe is too limited. It follows that in the event of prolonged non-circulation of the water in one of the conduits, its temperature can exceed that of the moving water, the totality of the calories collected by the water not circulating, being not transmitted to circulating water. It follows that, on these known installations, it is necessary to circulate the heating water by starting the accelerator of the heating circuit to obtain immediate heating of the domestic water, which means that provision must be made for separate circuit allowing this circulation, when the central heating installation is not in service (summer period).

Pour pallier ces difficultés, on a envisagé - FR A 1 484 821 - de réaliser un échangeur de chaleur dans lequel le circuit de chauffage, dans sa traversée du faisceau d'ailettes, est réalisé sous la forme d'une pluralité de tubes aplatis raccordés les uns aux autres par des coudes et le circuit d'eau sanitaire est réalisé sous la forme d'un tube replié en S ou en épingle et disposé à l'intérieur des tubes aplatis constituant le conduit du circuit de chauffage.To overcome these difficulties, it has been envisaged - FR A 1 484 821 - to produce a heat exchanger in which the heating circuit, in its crossing of the fin bundle, is produced in the form of a plurality of flattened tubes connected to each other by elbows and the sanitary water circuit is produced in the form of a tube folded in an S or a pin shape and arranged inside the flattened tubes constituting the duct of the heating circuit.

Dans une telle installation connue, les parois rectilignes du tube du circuit d'eau sanitaire sont plaquées et généralement soudées contre les parois correspondantes du tube aplati du circuit d'eau de chauffage dans lequel est positionné le circuit d'eau sanitaire. Cette disposition présente un inconvénient grave : en effet, le contact physique entre les deux tubes peut conduire à l'ébullition de l'eau sanitaire car dans ce cas, on réalise un contact thermique direct entre le gaz chaud traversant le faisceau d'ailettes et les deux tubes constituent les circuits d'eau sanitaire et de chauffage.In such a known installation, the rectilinear walls of the tube of the sanitary water circuit are pressed and generally welded against the corresponding walls of the flattened tube of the heating water circuit in which the sanitary water circuit is positioned. This arrangement has a serious drawback: in fact, physical contact between the two tubes can lead to the boiling of domestic water because in this case, there is a direct thermal contact between the hot gas passing through the fin bundle and the two tubes constitute the domestic water and heating circuits.

La présente invention se propose d'apporter une installation perfectionnée ne présentant pas les inconvénients mentionnés ci-dessus.The present invention proposes to provide an improved installation which does not have the drawbacks mentioned above.

Elle a donc pour objet une installation de chauffage central munie d'un circuit d'eau chaude à usage domestique, ou eau sanitaire, qui comprend un appareil de chauffage comportant une virole dont la partie intérieure est munie d'un brûleur, notamment d'un brûleur à gaz, et sur laquelle vient s'enrouler ou non un conduit du circuit de chauffage qui traverse ensuite un faisceau d'ailettes situées à la partie supérieur de la virole, sur le trajet des gaz chauds, le circuit de chauffage dans sa traversée du faisceau d'ailettes étant réalisé sous la forme d'une pluralité de tubes aplatis raccordés les uns aux autres par des coudes et le circuit d'eau chaude sanitaire étant réalisé sous la forme d'un tube conformé en épingle ou en serpentin et disposé à l'intérieur desdits tubes aplatis lors de la traversée du faisceau d'ailettes, caractérisée en ce que:
- les tubes du circuit d'eau chaude sanitaire, disposés en épingle ou en serpentin dans les tubes aplatis du circuit d'eau de chauffage ne sont pas au contact de ces derniers et
- les dimensions desdits tubes aplatis et desdits tubes sont choisies de manière que le volume d'eau contenu entre les tubes aplatis et les circonvolutions des tubes en épingle soit aussi réduit que possible.It therefore relates to a central heating installation provided with a hot water circuit for domestic use, or sanitary water, which comprises a heating device comprising a ferrule whose inner part is provided with a burner, in particular of a gas burner, and on which a heating circuit duct is wound or not, which then crosses a bundle of fins located at the upper part of the shell, on the hot gas path, the heating circuit in its crossing of the fin bundle being produced in the form of a plurality of flattened tubes connected to each other by elbows and the domestic hot water circuit being produced in the form of a tube shaped as a pin or serpentine and disposed inside said flattened tubes when crossing the fin bundle, characterized in that:
- the tubes of the domestic hot water circuit, arranged in a pin or serpentine in the flattened tubes of the heating water circuit are not in contact with the latter and
- The dimensions of said flattened tubes and said tubes are chosen so that the volume of water contained between the flattened tubes and the convolutions of the hairpin tubes is as small as possible.

Selon une caractéristique de cette invention, on prévoit à chaque extrémité des tubes aplatis extérieurement au faisceau d'ailettes, un embout qui est brasé ou soudé sur ladite extrémité de façon à l'obturer, cet embout présentant la forme d'une plaque munie d'une première ouverture pour le raccordement du tube coudé, assurant la liaison entre les serpentins ou épingles du conduit d'eau sanitaire et d'une seconde ouverture pour le raccordement du tube coudé qui assure la liaison entre deux tubes aplatis consécutifs.According to a characteristic of this invention, there is provided at each end of the tubes flattened externally to the fin bundle, an end piece which is brazed or welded on said end so as to close it, this end piece having the form of a plate provided with 'a first opening for the connection of the bent tube, ensuring the connection between the coils or pins of the sanitary water conduit and a second opening for the connection of the bent tube which ensures the connection between two consecutive flattened tubes.

Selon une autre caractéristique de cette invention et en vue d'accroître encore les échanges thermiques entre le circuit de l'eau de chauffage et celui de l'eau sanitaire, lors de leur traversée du faisceau d'ailettes, on prévoit une surface de transmission thermique entre les circonvolutions du tube enroulé en épingle ou en spirale, à l'intérieur des tubes aplatis.According to another characteristic of this invention and with a view to further increasing the heat exchanges between the heating water circuit and that of the sanitary water, when they pass through the fin bundle, a transmission surface is provided. thermal between the convolutions of the tube wound in a pin or in a spiral, inside the flattened tubes.

Selon l'invention, ladite surface de transmission thermique est réalisée sous la forme d'une plaque métallique comportant des parties partiellement cylindriques épousant la forme du tube conformé en épingle, sur lequel elles viennent s'engager, raccordées par des parties planes verticales.According to the invention, said thermal transmission surface is produced in the form of a metal plate comprising partially cylindrical parts matching the shape of the tube shaped as a pin, on which they come to engage, connected by vertical flat parts.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence aux dessins annexés qui en illustrent des exemples de réalisation dépourvus de tout caractère limitatif. Sur les dessins:

  • La figure 1 est une vue partielle en élévation latérale et coupe verticale partielle représentant la disposition relative du conduit d'eau de chauffage et du conduit d'eau sanitaire, lors de leur traversée du faisceau d'ailettes placées à la partie supérieure de la virole de l'appareil de chauffage;
  • La figure 2 est une vue en plan de la figure 1;
  • Les figures 3 et 4 sont respectivement des vues en élévation latérale et frontale d'un embout prévu selon l'invention pour obturer chaque extrémité des conduits de l'installation, à leur sortie du faisceau d'ailettes;
  • La figure 5 est une vue en plan d'une ailette faisant partie du faisceau d'ailettes de l'appareil de chauffage;
  • La figure 6 est une vue en coupe verticale d'un exemple de réalisation d'une surface assurant une transmission calorifique améliorée entre l'eau de chauffage contenue dans les tubes aplatis et le conduit en épingle de l'eau sanitaire et
  • La figure 7 est une vue en coupe verticale montrant la disposition de la surface de transmission calorifique illustrée par la figure 6, dans le conduit d'eau de chauffage.
  • Les figures 8 à 11 illustrent une variante de l'invention en élévation latérale, en plan, en bout et en coupe selon XI-XI et
  • La figure 12 est une vue schématique similaire à la figure 1, illustrant une autre variante de réalisation de la présente invention.
Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawings which illustrate exemplary embodiments thereof without any limiting character. In the drawings:
  • Figure 1 is a partial view in side elevation and partial vertical section showing the relative arrangement of the heating water pipe and the domestic water pipe, when passing through the bundle of fins placed at the top of the shell the heater;
  • Figure 2 is a plan view of Figure 1;
  • Figures 3 and 4 are respectively side and front elevational views of a nozzle provided according to the invention for closing each end of the ducts of the installation, at their exit from the fin bundle;
  • Figure 5 is a plan view of a fin forming part of the fin bundle of the heater;
  • FIG. 6 is a view in vertical section of an exemplary embodiment of a surface ensuring improved heat transmission between the heating water contained in the flattened tubes and the hairpin pipe of the domestic water and
  • Figure 7 is a vertical sectional view showing the arrangement of the heat transmission surface illustrated by Figure 6, in the heating water conduit.
  • FIGS. 8 to 11 illustrate a variant of the invention in lateral elevation, in plan, at the end and in section along XI-XI and
  • Figure 12 is a schematic view similar to Figure 1, illustrating another alternative embodiment of the present invention.

En se référant aux dessins et notamment aux figures 1 et 2, on voit que l'appareil de chauffage objet de cette invention comporte un premier conduit 10 pour le chauffage de l'eau du circuit du chauffage central et un second conduit 12 pour le chauffage de l'eau à usage domestique ou eau sanitaire. Afin d'améliorer la transmission thermique, les deux conduits ont un échange thermique intime dans la partie supérieure de l'appareil de chauffage où est positionné le faisceau d'ailettes 18 (partie représentée aux figures 1 et 2).Referring to the drawings and in particular to Figures 1 and 2, it can be seen that the heating device which is the subject of this invention comprises a first duct 10 for heating the water of the central heating circuit and a second duct 12 for heating water for domestic use or sanitary water. In order to improve the thermal transmission, the two conduits have an intimate heat exchange in the upper part of the heating appliance where the fin bundle 18 is positioned (part shown in FIGS. 1 and 2).

Selon l'invention dans cette partie supérieure de l'appareil de chauffage, le conduit 10′ du circuit dans lequel circule l'eau de chauffage se présente sous la forme d'une pluralité de tubes aplatis tels que 10′, qui présentent chacun une section droite de forme ovale, ou sensiblement ovale, dont le grand axe est disposé verticalement. Comme on le décrira en détail ci-après, les différents tubes aplatis 10′ disposés parallèlement sont raccordés à leur extrémités par des tubes coudés tels que 14.According to the invention in this upper part of the heating appliance, the duct 10 ′ of the circuit in which the heating water circulates is in the form of a plurality of flattened tubes such as 10 ′, which each have a oval cross section, or substantially oval, the major axis of which is arranged vertically. As will be described in detail below, the different flattened tubes 10 ′ arranged in parallel are connected at their ends by bent tubes such as 14.

Le conduit d'eau sanitaire 12 est constitué d'un tube de préférence de section droite circulaire et il est disposé à l'intérieur des tubes aplatis tels que 10′ qu'il traverse en prenant la configuration d'une épingle ou d'un serpentin de façon à augmenter considérablement la surface d'échange thermique, entre l'eau du chauffage qui circule dans les tubes aplatis 10′ et l'eau sanitaire contenue dans le tube en configuration d'épingle 12′, dans sa traversée du tube aplati. Comme on le voit clairement sur la figure 1, chaque tube 10′ constituant une portion du circuit de l'eau de chauffage dans sa traversée du faisceau d'ailettes 18, reçoit une partie en configuration d'épingle 12′ du conduit d'eau sanitaire. Le positionnement de la section de tube en configuration d'épingle 12′ dans le tube aplati 10′ constituant le conduit de l'eau de chauffage, est réalisé de manière qu'il n'existe aucun contact entre les parois des tubes 12′ et 10′. En outre, la section du tube en configuration d'épingle 12′est choisie de manière que le volume d'eau contenu entre le tube aplati 10′ et l'épingle ou serpentin 12′ soit aussi réduit que possible de manière que l'eau circulant dans le circuit sanitaire 12 prenne toutes les calories de l'eau de chauffage, sans qu'il soit nécessaire de mettre en service l'accélérateur du circuit de chauffage, l'absence de contact entre les parois des tubes 10′ et 12′ empêchant toute ébullition de l'eau sanitaire circulant dans le tube 12′.The sanitary water conduit 12 consists of a tube preferably of circular cross section and it is disposed inside the flattened tubes such as 10 ′ which it crosses in the configuration of a pin or a coil so as to considerably increase the heat exchange surface, between the heating water which circulates in the flattened tubes 10 ′ and the sanitary water contained in the tube in pin configuration 12 ′, in its crossing of the flattened tube . As can be clearly seen in FIG. 1, each tube 10 ′ constituting a portion of the heating water circuit in its passage through the fin bundle 18, receives a portion in the pin configuration 12 ′ of the water conduit sanitary. The positioning of the tube section in the pin configuration 12 ′ in the flattened tube 10 ′ constituting the heating water conduit, is carried out so that there is no contact between the walls of the tubes 12 ′ and 10 ′. In addition, the section of the tube in the pin configuration 12 ′ is chosen so that the volume of water contained between the flattened tube 10 ′ and the pin or coil 12 ′ is as small as possible so that the water circulating in the sanitary circuit 12 takes all the calories from the heating water, without it being necessary to put the accelerator of the heating circuit into operation, the absence of contact between the walls of the tubes 10 ′ and 12 ′ preventing any boiling of the domestic water circulating in the tube 12 ′.

L'obturation des extrémités des tubes aplatis 10′ est réalisée selon l'invention à l'aide d'embouts 20 en forme de plaques (figures 3 et 4), qui comportent une ouverture 22 pour le raccordement des tubes coudés 16 qui assurent la liaison entre deux serpentins ou épingles 12′ consécutifs et une seconde ouverture 24 pour le raccordement des tubes coudés 14 assurant la liaison entre deux tubes aplatis 10′ consécutifs. Les plaques d'embouts 20 sont de préférence brasées sur les extrémités des tubes 10′.The ends of the flattened tubes 10 ′ are closed off according to the invention using end pieces 20 in the form of plates (FIGS. 3 and 4), which have an opening 22 for connecting the bent tubes 16 which provide the connection between two consecutive coils or pins 12 ′ and a second opening 24 for the connection of bent tubes 14 ensuring the connection between two flattened tubes 10 ′ consecutive. The end plates 20 are preferably brazed on the ends of the tubes 10 ′.

La figure 5 illustre un exemple de réalisation d'une ailette 18. Celle-­ci comporte une série d'ouvertures telles que 26 dont la forme correspond à la section droite des tubes aplatis 10′, ces ailettes étant successivement enfilées sur le réseau de tubes parallèles 10′ sur lesquels elles sont brasées de façon connue (voir la figure 2).FIG. 5 illustrates an exemplary embodiment of a fin 18. This comprises a series of openings such as 26, the shape of which corresponds to the cross section of the flattened tubes 10 ′, these fins being successively threaded on the network of tubes parallel 10 ′ on which they are brazed in a known manner (see FIG. 2).

Afin d'améliorer encore les échanges thermiques entre les deux fluides (eau de chauffage - eau sanitaire), lors de leur traversée du faisceau d'ailettes 18, on peut prévoir des surfaces supplémentaires d'échange 28 reliant entre elles les circonvolutions du tube conformé en épingle ou serpentin 12′ incorporé dans chaque tube aplati 10′.In order to further improve the heat exchanges between the two fluids (heating water - sanitary water), during their crossing of the fin bundle 18, additional exchange surfaces 28 can be provided connecting the convolutions of the shaped tube to one another hairpin or serpentine 12 ′ incorporated in each flattened tube 10 ′.

Dans l'exemple illustré par les figures 6 et 7, cette surface d'échange supplémentaire se présente sous la forme d'une plaque comportant des parties partiellement cylindriques 30 qui viennent s'engager sur les différentes portions du tube 12′ enroulé en épingle, ces parties 30 étant raccordées par des parties planes verticales 32. La figure 7 représente la disposition relative du tube 12′ enroulé en épingle, muni de la plaque 28, et du tube aplati 10′ dans lequel est disposée l'épingle 12′. La plaque 28 peut être éventuellement brasée sur le tube 12′.In the example illustrated by FIGS. 6 and 7, this additional exchange surface is in the form of a plate comprising partially cylindrical parts 30 which come to engage on the different portions of the tube 12 ′ wound in a pin, these parts 30 being connected by vertical flat parts 32. FIG. 7 shows the relative arrangement of the tube 12 ′ wound in a pin, provided with the plate 28, and the flattened tube 10 ′ in which the pin 12 ′ is arranged. The plate 28 can be optionally brazed on the tube 12 ′.

On voit que, grâce à l'invention, on obtient une surface d'échange maximale entre les deux conduits 10′ et 12′ et par conséquent un échange thermique parfait entre les circuits d'eau de chauffage et d'eau sanitaire.It can be seen that, thanks to the invention, a maximum exchange surface is obtained between the two conduits 10 ′ and 12 ′ and therefore perfect heat exchange between the heating water and domestic water circuits.

Dans la variante représentée sur les figures 8 à 11, le tube 12′ disposé en épingle ou en serpentin, est réalisé selon une structure monobloc avec la plaque 28, l'ensemble tube et plaque étant embouti sous la forme de deux demi-coquilles 34, 34′ qui sont raccordées par leur plan de joint 36, et solidarisées par un procédé de soudure sans métal d'apport, par exemple par pression, ultrasons ou autres.In the variant shown in Figures 8 to 11, the tube 12 ′ arranged in a pin or serpentine, is produced in a one-piece structure with the plate 28, the tube and plate assembly being stamped in the form of two half-shells 34 , 34 ′ which are connected by their joint plane 36, and secured by a welding process without filler metal, for example by pressure, ultrasound or others.

Dans la variante de réalisation de l'invention illustrée par la figure 12, le tube 12′, disposé en épingle ou en serpentin, dans lequel circule l'eau sanitaire, présente une configuration légèrement cintrée dans ses parties qui sont situées au voisinage des parois du tube 10′ dans lequel circule l'eau de chauffage et ce tube 12′ est muni d'une pluralité de bagues 38 en matière plastique résistant à la chaleur et à l'humidité, par exemple en silicone, ces bagues étant enfilées sur le tube 12′ à intervalles réguliers comme le montre la figure 12. Cette disposition particulière présente un double avantage : elle permet tout d'abord d'éviter tout contact des tubes 12′ avec le tube constituant le conduit 10′ dans lequel circule l'eau de chauffage et d'autre part elle élimine les vibrations d'origine hydraulique qui se produisent dans ce type d'installation lorsque l'eau sanitaire circule dans le serpentin selon lequel est configurée la conduite d'eau sanitaire.In the variant embodiment of the invention illustrated in FIG. 12, the tube 12 ′, arranged in a pin or in a serpentine, in which circulates the sanitary water, has a slightly curved configuration in its parts which are located in the vicinity of the walls of the tube 10 ′ in which the heating water circulates and this tube 12 ′ is provided with a plurality of rings 38 made of plastic material resistant to heat and humidity, for example silicone, these rings being threaded on the tube 12 ′ at regular intervals as shown in Figure 12. This particular arrangement has a double advantage: it allows first of all avoid contact of the tubes 12 ′ with the tube constituting the conduit 10 ′ in which the heating water circulates and on the other hand it eliminates the vibrations of hydraulic origin which occur in this type of installation when the sanitary water circulates in the coil according to which the domestic water pipe is configured.

La lecture de la description qui précède montre que l'invention apporte une installation de chauffage assurant un échange thermique parfait entre les circuits incorporés d'eau de chauffage et d'eau sanitaire, grâce à une surface de contact thermique importante obtenue sans contact physique des circuits, par la disposition relative des deux conduits, par la configuration en épingle du tube de conduit de circulation de l'eau sanitaire traversant le tube aplati du conduit de l'eau de chauffage, par le faible volume de l'eau contenue entre chaque tube aplati et le tube disposé en épingle qu'il contient et de préférence grâce à la disposition des bagues en matière plastique enfilées sur le tube constituant le circuit d'eau sanitaire qui maintiennent ce dernier à l'écart du tube constituant le circuit d'eau de chauffage en éliminant toute source de vibrations d'origine hydraulique.Reading the above description shows that the invention provides a heating installation ensuring perfect heat exchange between the incorporated circuits of heating water and sanitary water, thanks to a large thermal contact surface obtained without physical contact of the circuits, by the relative arrangement of the two conduits, by the hairpin configuration of the sanitary water circulation conduit tube passing through the flattened tube of the heating water conduit, by the small volume of water contained between each flattened tube and the tube arranged in a pin that it contains and preferably thanks to the arrangement of plastic rings threaded on the tube constituting the sanitary water circuit which keep the latter away from the tube constituting the circuit heating water by eliminating all sources of hydraulic vibration.

Grâce à ces caractéristiques originales, en cas de non circulation prolongée de l'eau dans l'un des conduits (par exemple dans le conduit de l'eau de chauffage en période d'été), sa température ne peut pas dépasser celle de l'eau en mouvement, étant donné qu'une quantité maximale des calories recueillies par l'eau ne circulant pas, est transmise à l'eau en circulation.Thanks to these original characteristics, in the event of prolonged non-circulation of water in one of the conduits (for example in the conduit of heating water during the summer period), its temperature cannot exceed that of l moving water, since a maximum amount of the calories collected by the non-circulating water is transmitted to the circulating water.

Par ailleurs, il est toujours possible d'obtenir la puissance totale développée par l'appareil de chauffage dans l'un des conduits lorsque la circulation de l'eau est arrêtée dans l'autre conduit. Enfin, l'invention permet, par une circulation de l'eau dans les deux circuits, de répartir la puissance totale de l'appareil entre les deux circuits en fonction des débits d'eau chaude désirés, tout en évitant toute ébullition de l'eau chaude sanitaire. L'invention permet en outre de réaliser une économie de matière importante (matériau de brasage) par rapport aux solutions connues mettant en oeuvre des tubes accolés.Furthermore, it is always possible to obtain the total power developed by the heater in one of the conduits when the circulation of water is stopped in the other conduit. Finally, the invention makes it possible, by circulating water in the two circuits, to distribute the total power of the appliance between the two circuits as a function of the desired hot water flow rates, while avoiding any boiling of the hot water. The invention also makes it possible to achieve a significant saving in material (brazing material) compared to known solutions using joined tubes.

Il demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés ci-dessus mais qu'elle en englobe toutes les variantes.It remains to be understood that the present invention is not limited to the embodiments described and shown above but that it encompasses all variants thereof.

Claims (7)

1- Installation de chauffage central munie d'un circuit d'eau chaude à usage domestique, ou eau sanitaire, qui comprend un appareil de chauffage comportant une virole dont la partie intérieure est munie d'un brûleur, notamment d'un brûleur à gaz, et sur laquelle vient s'enrouler ou non un conduit du circuit de chauffage qui traverse ensuite un faisceau d'ailettes situées à la partie supérieure de la virole, sur le trajet des gaz chauds, le circuit de chauffage dans sa traversée du faisceau d'ailettes étant réalisé sous la forme d'une pluralité de tubes aplatis raccordés les uns aux autres par des coudes et le circuit d'eau chaude sanitaire étant réalisé sous la forme d'un tube conformé en épingle ou en serpentin et disposé à l'intérieur desdits tubes aplatis lors de la traversée du faisceau d'ailettes, caractérisée en ce que :
- les tubes (12′) du circuit d'eau chaude sanitaire, disposés en épingle ou en serpentin dans les tubes aplatis (10′) du circuit d'eau de chauffage ne sont pas au contact de ces derniers et
- les dimensions desdits tubes aplatis (10′) et desdits tubes (12′) sont choisies de manière que le volume d'eau contenu entre les tubes aplatis et les circonvolutions des tubes en épingle soit aussi réduit que possible.1- Central heating installation provided with a hot water circuit for domestic use, or sanitary water, which includes a heating device comprising a ferrule the inner part of which is provided with a burner, in particular a gas burner , and on which a heating circuit duct is wound or not, which then crosses a bundle of fins located at the upper part of the shell, on the hot gas path, the heating circuit in its crossing of the bundle d 'fins being produced in the form of a plurality of flattened tubes connected to each other by elbows and the domestic hot water circuit being produced in the form of a tube shaped as a pin or serpentine and arranged at the inside of said flattened tubes when crossing the fin bundle, characterized in that:
- the tubes (12 ′) of the domestic hot water circuit, arranged in a pin or serpentine form in the flattened tubes (10 ′) of the heating water circuit are not in contact with the latter and
- The dimensions of said flattened tubes (10 ′) and said tubes (12 ′) are chosen so that the volume of water contained between the flattened tubes and the convolutions of the hairpin tubes is as small as possible. 2- Installation de chauffage selon la revendication 1, caractérisée en ce qu'on prévoit à chaque extrémité des tubes aplatis (10′) extérieurement au faisceau d'ailettes, un embout (20) qui est brasé ou soudé sur ladite extrémité de façon à l'obturer, cet embout présentant la forme d'une plaque munie d'une première ouverture (22) pour le raccordement du tube coudé (16), assurant la liaison entre les serpentins ou épingles (12′) du conduit d'eau sanitaire et d'une seconde ouverture (24) pour le raccordement du tube coudé (14) qui assure la liaison entre deux tubes aplatis (10′) consécutifs.2- Heating installation according to claim 1, characterized in that there is provided at each end of the flattened tubes (10 ′) outside the fin bundle, a nozzle (20) which is brazed or welded on said end so as to shut it off, this nozzle having the shape of a plate provided with a first opening (22) for the connection of the bent tube (16), ensuring the connection between the coils or pins (12 ′) of the sanitary water conduit and a second opening (24) for the connection of the bent tube (14) which provides the connection between two flattened tubes (10 ′) consecutive. 3- Installation de chauffage selon l'une des revendications 1 ou 2, caractérisée en ce que, en vue d'accroître encore les échanges thermiques entre le circuit de l'eau de chauffage et celui de l'eau sanitaire, lors de leur traversée du faisceau d'ailettes, on prévoit une surface (28) de transmission thermique entre les circonvolutions du tube (12′) disposé en épingle ou en serpentin, à l'intérieur des tubes aplatis (10′).3- Heating installation according to one of claims 1 or 2, characterized in that, in order to further increase the heat exchange between the circuit of the heating water and that of the sanitary water, during their crossing of the fin bundle, a surface (28) of thermal transmission is provided between the convolutions of the tube (12 ′) arranged in a pin or serpentine form, inside the flattened tubes (10 ′). 4- Installation de chauffage selon la revendication 3, caractérisée en ce que ladite surface de transmission thermique est réalisée sous la forme d'une plaque métallique (28) comportant des parties partiellement cylindriques (30)épousant la forme du tube (12′) conformé en épingle, sur lequel elles viennent s'engager, raccordées par des parties planes verticales (32).4- A heating installation according to claim 3, characterized in that said thermal transmission surface is produced in the form of a metal plate (28) comprising partially cylindrical parts (30) conforming to the shape of the shaped tube (12 ′) hairpin, on which they engage, connected by vertical flat parts (32). 5- Installation de chauffage selon l'une des revendications 3 ou 4, caractérisée en ce que la plaque métallique (28) est brasée sur le tube (12′).5- Heating installation according to one of claims 3 or 4, characterized in that the metal plate (28) is brazed on the tube (12 ′). 6- Installation de chauffage selon l'une quelconque des revendications 3 à 5, caractérisée en ce que le tube (12′) disposé en épingle ou en serpentin, est réalisé selon une structure monobloc avec la plaque (28), l'ensemble tube (12′) et plaque (28) étant embouti sous la forme de deux demi-coquilles (34, 34′) qui sont raccordées par leur plan de joint (36) et solidarisées par un procédé de soudure sans apport de métal, notamment sous pression, ultrasons ou autres.6- Heating installation according to any one of claims 3 to 5, characterized in that the tube (12 ′) arranged in a pin or serpentine, is produced in a one-piece structure with the plate (28), the tube assembly (12 ′) and plate (28) being stamped in the form of two half-shells (34, 34 ′) which are connected by their joint plane (36) and secured by a welding process without addition of metal, in particular under pressure, ultrasound or other. 7- Installation de chauffage selon l'une quelconque des revendications précédentes caractérisée en ce que le tube (12′), disposé en épingle ou en serpentin, dans lequel circule l'eau sanitaire, présente une configuration légèrement cintrée dans ses parties qui sont situées au voisinage des parois du tube (10′) dans lequel circule l'eau de chauffage et ce tube (12′) est muni d'une pluralité de bagues (38) en matière plastique résistant à la chaleur et à l'humidité, telle que par exemple en silicone, ces bagues étant enfilées sur le tube (12′) à intervalles réguliers.7- Heating installation according to any one of the preceding claims, characterized in that the tube (12 ′), arranged in a pin or in a serpentine, in which the sanitary water circulates, has a slightly curved configuration in its parts which are located in the vicinity of the walls of the tube (10 ′) in which the heating water circulates and this tube (12 ′) is provided with a plurality of rings (38) of plastic material resistant to heat and humidity, such as as for example made of silicone, these rings being threaded on the tube (12 ′) at regular intervals.
EP89400269A 1988-02-16 1989-01-31 Central heating installation with a sanitary hot water circuit Expired - Lifetime EP0329508B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89400269T ATE73918T1 (en) 1988-02-16 1989-01-31 CENTRAL HEATING WITH DOMESTIC WATER CIRCUIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801800 1988-02-16
FR8801800A FR2627266B1 (en) 1988-02-16 1988-02-16 CENTRAL HEATING SYSTEM WITH HOT WATER CIRCUIT FOR SANITARY USE

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EP0329508A1 true EP0329508A1 (en) 1989-08-23
EP0329508B1 EP0329508B1 (en) 1992-03-18

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US (1) US4946098A (en)
EP (1) EP0329508B1 (en)
JP (1) JP2719171B2 (en)
KR (1) KR960006266B1 (en)
AT (1) ATE73918T1 (en)
CA (1) CA1320937C (en)
DE (1) DE68900993D1 (en)
ES (1) ES2030276T3 (en)
FR (1) FR2627266B1 (en)
GR (1) GR3004307T3 (en)
IE (1) IE63734B1 (en)
PT (1) PT89711B (en)

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Publication number Priority date Publication date Assignee Title
ATE117425T1 (en) * 1991-09-19 1995-02-15 Leblanc Sa E L M COMBINED HEAT EXCHANGER FOR HEATING AND DOMESTIC WATER WITH SEAMLESS COIL PIPE FOR DOMESTIC WATER HEATING.
FR2681670B1 (en) * 1991-09-19 1993-12-03 Elm Leblanc MIXED HEATER-HOT WATER EXCHANGER WITH NON-WELDED SANITARY HEATING COIL.
US6557774B1 (en) 1999-10-12 2003-05-06 Gregory A. Krueger Non-pressurized space heating system and apparatus
CN101738122B (en) * 2009-12-14 2011-12-21 杭州沈氏换热器有限公司 Coiled tube and heat exchanger applying same
NL2011539C2 (en) * 2013-10-02 2015-04-07 Intergas Heating Assets B V HEAT EXCHANGER WITH A PIPE WITH AN ALTHANS PARTIALLY VARIABLE SECTION.
US20160341483A1 (en) * 2014-07-13 2016-11-24 Guntner U.S. Llc Heat Exchange Device with Variable Tube Material
CN105241285B (en) * 2015-10-31 2017-08-25 青岛恒泰散热器有限公司 superconducting radiator

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Publication number Priority date Publication date Assignee Title
BE672518A (en) * 1964-11-19 1966-03-16
FR1484821A (en) * 1966-05-06 1967-06-16 Daniel Sa Des Ets heat exchanger for central heating boilers comprising a heating water circuit and a domestic hot water circuit
CH474728A (en) * 1966-07-01 1969-06-30 Runtaltherm Ag Liquid heater with gas or oil heating
FR2404179A1 (en) * 1977-09-23 1979-04-20 Bosch Gmbh Robert HEAT TRANSMITTER FOR A FREE FLOW WATER HEATER HEATED WITH GAS OR OIL

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US2452391A (en) * 1946-01-18 1948-10-26 Nat Radiator Company Heat exchanger

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Publication number Priority date Publication date Assignee Title
BE672518A (en) * 1964-11-19 1966-03-16
FR1484821A (en) * 1966-05-06 1967-06-16 Daniel Sa Des Ets heat exchanger for central heating boilers comprising a heating water circuit and a domestic hot water circuit
CH474728A (en) * 1966-07-01 1969-06-30 Runtaltherm Ag Liquid heater with gas or oil heating
FR2404179A1 (en) * 1977-09-23 1979-04-20 Bosch Gmbh Robert HEAT TRANSMITTER FOR A FREE FLOW WATER HEATER HEATED WITH GAS OR OIL

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JP2719171B2 (en) 1998-02-25
CA1320937C (en) 1993-08-03
ES2030276T3 (en) 1992-10-16
PT89711B (en) 1994-01-31
PT89711A (en) 1989-10-04
FR2627266A1 (en) 1989-08-18
GR3004307T3 (en) 1993-03-31
DE68900993D1 (en) 1992-04-23
FR2627266B1 (en) 1990-06-01
US4946098A (en) 1990-08-07
KR960006266B1 (en) 1996-05-13
EP0329508B1 (en) 1992-03-18
ATE73918T1 (en) 1992-04-15
JPH01252863A (en) 1989-10-09
IE63734B1 (en) 1995-06-14
IE890476L (en) 1989-08-16
KR890013432A (en) 1989-09-23

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