FR2741426A1 - COMBINED COILING HEATER WITH COMPLEX STRAIGHT SECTION - Google Patents
COMBINED COILING HEATER WITH COMPLEX STRAIGHT SECTION Download PDFInfo
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- FR2741426A1 FR2741426A1 FR9513805A FR9513805A FR2741426A1 FR 2741426 A1 FR2741426 A1 FR 2741426A1 FR 9513805 A FR9513805 A FR 9513805A FR 9513805 A FR9513805 A FR 9513805A FR 2741426 A1 FR2741426 A1 FR 2741426A1
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- 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
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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
- F24H1/48—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
- 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
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- 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
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- 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
- F28D7/10—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 arranged one within the other, e.g. concentrically
- F28D7/106—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 arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Finger-Pressure Massage (AREA)
- Resistance Heating (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
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La présente invention est relative à des perfectionnements apportés aux corps de chauffe de chaudières, notamment de chauffage central au gaz. Ces chaudières à usage domestique ou industriel doivent fournir a l'utilisateur, aussi bien l'eau chaude sanitaire dont la température ne doit pas excéder 65 C, que l'eau chaude de chauffage qui est mise en circulation en circuit fermé au sein du réseau de chauffage central de l'habitation. Ces corps de chauffe sont couramment appelés corps de chauffe mixtes car ils disposent de deux circuits d'eau séparés, l'un pour l'eau sanitaire, l'autre pour l'eau de chauffage, qui sont rendus solidaires de manière à ce qu'il existe entre eux un contact thermique intime. Généralement, il s'agit de circuits tubulaires disposés l'un à l'intérieur de l'autre, et comportant, soit des moyens pour réaliser les ponts thermiques entre les deux circuits, soit des circuits tubulaires séparés mais aplatis et accolés l'un contre l'autre. Ces corps de chauffe disposent par ailleurs d'un faisceau d'ailettes chargées de transmettre aux circuits tubulaires, le flux thermique véhiculé par les fumées résultant de la combustion au sein d'un The present invention relates to improvements made to boiler heating bodies, in particular gas central heating. These boilers for domestic or industrial use must provide the user with both domestic hot water, the temperature of which must not exceed 65 ° C, and hot heating water which is circulated in a closed circuit within the network. central heating of the house. These heating bodies are commonly called mixed heating bodies because they have two separate water circuits, one for domestic water, the other for heating water, which are made integral so that 'there is an intimate thermal contact between them. Generally, these are tubular circuits arranged one inside the other, and comprising either means for making the thermal bridges between the two circuits, or separate tubular circuits but flattened and joined one against each other. These heating bodies also have a bundle of fins responsible for transmitting to the tubular circuits, the heat flux conveyed by the fumes resulting from combustion within a
brûleur placé en partie inférieure du corps de chauffe. burner placed in the lower part of the heating body.
Une contrainte principale qui agit sur ce type d'échangeur réside principalement dans le fait que les différents circuits d'eau circulent alternativement. Chacun des circuits en circulation doit être capable d'évacuer la totalité des calories présentes dans les fumées, sans que l'autre circuit stagnant ne A main constraint which acts on this type of exchanger lies mainly in the fact that the various water circuits circulate alternately. Each of the circulating circuits must be able to evacuate all the calories present in the fumes, without the other stagnant circuit not
monte exagérément en température ou en pression. rises excessively in temperature or pressure.
A l'heure actuelle, les réglementations normatives imposent des seuils de température à ne pas dépasser, principalement sur le circuit de chauffage de l'eau sanitaire, cette barrière étant très difficile à observer avec le type de corps de chauffe mixte At present, normative regulations impose temperature thresholds not to be exceeded, mainly on the domestic water heating circuit, this barrier being very difficult to observe with the type of mixed heating body
connu de l'art antérieur.known from the prior art.
Afin de répondre cependant à ces normes, les concepteurs du corps de chauffe mixte résolvent ce problème en incorporant à l'installation des dispositifs écrêteurs qui compliquent notablement la structure de l'échangeur. Une autre façon de résoudre ce problème est d'imposer au circuit de l'eau de chauffage des recirculations en boucle fermée au sein de la In order to meet these standards, however, the designers of the mixed heating body solve this problem by incorporating clipping devices in the installation, which considerably complicate the structure of the exchanger. Another way to solve this problem is to impose closed loop recirculations within the heating circuit on the heating water circuit.
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chaudière lors du puisage de l'eau sanitaire. Cette solution impose qu'il existe sur le circuit de chauffage une vanne trois voies et une tuyauterie de raccordement, ce qui augmente le coût boiler when drawing sanitary water. This solution requires that there is a three-way valve and a connecting pipe on the heating circuit, which increases the cost.
de fabrication et de maintenance.manufacturing and maintenance.
La présente invention vise donc à pallier ces inconvénients, en proposant un corps de chauffe qui dispose à la fois d'un circuit de chauffage d'eau sanitaire et un circuit d'eau de chauffage central, ces circuits étant imbriqués l'un dans l'autre mais disposant d'une optimisation au niveau des The present invention therefore aims to overcome these drawbacks by proposing a heating body which has both a domestic water heating circuit and a central heating water circuit, these circuits being nested one in the other but with an optimization in terms of
écoulements et des échanges thermiques au sein de l'échangeur. flows and heat exchanges within the exchanger.
Selon une autre caractéristique de l'invention, elle a pour objet un procédé d'élaboration de ce type de corps de chauffe mixte. A cet effet, le corps de chauffe mixte, comportant un circuit de chauffage sanitaire et un circuit de chauffage central, ces derniers étant disposés l'un à l'intérieur de l'autre, caractérisé en ce qu'il comprend une pluralité de premiers éléments pour le circuit de chauffage central, reliés par leurs extrémités à des nourrices et au sein desquels serpente une pluralité de seconds éléments à section droite complexe, destinés au circuit de chauffage sanitaire, ces seconds éléments débouchant également dans lesdites nourrices, le montage du second élément dans le premier élément délimitant en outre une pluralité de génératrices de contact entre lesdits seconds éléments et lesdits premiers éléments afin de réaliser According to another characteristic of the invention, it relates to a process for the preparation of this type of mixed heating body. To this end, the mixed heating body, comprising a sanitary heating circuit and a central heating circuit, the latter being arranged one inside the other, characterized in that it comprises a plurality of first elements for the central heating circuit, connected by their ends to manifolds and within which winds a plurality of second elements with complex cross-section, intended for the domestic heating circuit, these second elements also opening into said manifolds, the mounting of the second element in the first element further delimiting a plurality of generators of contact between said second elements and said first elements in order to achieve
au niveau de ces génératrices des ponts thermiques. at the level of these generators thermal bridges.
D'autres caractéristiques et avantages de la présente Other features and advantages of this
invention ressortiront de la description faite ci-après, en invention will emerge from the description given below, in
référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les figures: - La figure 1 est une vue en perspective et en écorché, illustrant le montage dans une chaudière murale d'un corps de chauffe mixte selon l'invention; - La figure 2 est une vue en perspective d'un corps de chauffe mixte selon l'invention; - la figure 3 est une vue en coupe, en élévation latérale, d'un corps de chauffe mixte selon l'invention; reference to the accompanying drawings which illustrate an embodiment thereof devoid of any limiting character. In the figures: - Figure 1 is a perspective and cutaway view, illustrating the mounting in a wall-mounted boiler of a mixed heating body according to the invention; - Figure 2 is a perspective view of a mixed heating body according to the invention; - Figure 3 is a sectional view, in side elevation, of a mixed heating body according to the invention;
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- la figure 4 est une vue en coupe, en élévation frontale, FIG. 4 is a sectional view, in front elevation,
de la figure 3.in Figure 3.
Selon un mode préféré de réalisation du corps de chauffe mixte 1, objet de l'invention, il comporte une pluralité de premiers éléments 2 réalisés sous la forme d'un tube de section droite circulaire ou ovale, au sein desquels sont incorporés une pluralité de seconds éléments 3 se présentant sous la forme d'un tube de section droite complexe, telle que notamment en croix, en X, en Y. Le premier élément 2 constitue le circuit de chauffage, l'eau de chauffage circule dans les sections délimitées entre les parois extérieures 4 du tube de section droite complexe et According to a preferred embodiment of the mixed heating body 1, object of the invention, it comprises a plurality of first elements 2 produced in the form of a tube of circular or oval cross section, within which are incorporated a plurality of second elements 3 being in the form of a tube of complex cross section, such as in particular in cross, in X, in Y. The first element 2 constitutes the heating circuit, the heating water circulates in the sections delimited between the outer walls 4 of the tube of complex cross section and
la paroi intérieure 5 du premier élément 2. the inner wall 5 of the first element 2.
Le second élément 3 constitue le circuit de chauffage sanitaire, l'eau sanitaire chemine à l'intérieur de la section The second element 3 constitutes the sanitary heating circuit, the sanitary water flows inside the section
droite complexe.complex right.
Selon une caractéristique avantageuse, le montage du second élément 3 dans le premier élément 2 délimite une pluralité de génératrices de contact 6 entre le tube de section droite complexe 3 et le tube externe 2; ces génératrices de contact 6 sont rendues solidaires au niveau des premiers 2 et seconds éléments 3 par l'intermédiaire de moyens connus tels que notamment par une opération de brasage ou de soudage, afin de According to an advantageous characteristic, the mounting of the second element 3 in the first element 2 delimits a plurality of contact generators 6 between the tube of complex cross section 3 and the external tube 2; these contact generators 6 are made integral at the level of the first 2 and second elements 3 by means of known means such as in particular by a brazing or welding operation, in order to
réaliser au niveau de ces génératrices des ponts thermiques. make thermal bridges at these generators.
Grace à ce montage entre ces deux éléments 2, 3, lors du fonctionnement sanitaire, le flux thermique chemine en grande partie directement par conduction entre l'eau sanitaire et le matériau en contact avec les fumées, sans utiliser outre mesure Thanks to this assembly between these two elements 2, 3, during sanitary operation, the heat flow goes largely directly by conduction between sanitary water and the material in contact with the fumes, without using unduly
le circuit d'eau de chauffage comme fluide caloporteur. the heating water circuit as the heat transfer fluid.
Selon une autre caractéristique avantageuse de l'invention, le profil complexe du second élément 3 garantit que celui-ci dispose d'une surface d'échange suffisante pour permettre d'évacuer la totalité de la puissance thermique délivrée par le According to another advantageous characteristic of the invention, the complex profile of the second element 3 guarantees that it has a sufficient exchange surface to allow all of the thermal power delivered by the
brleur 7, positionné dans sa partie inférieure. burner 7, positioned in its lower part.
Par contre, le montage particulier entre les premiers 2 et seconds 3 éléments assure que, lors du fonctionnement en chauffage central, la température de paroi des canaux périphériques 8 - ceux-ci étant délimités par le premier élément On the other hand, the particular arrangement between the first 2 and second 3 elements ensures that, during operation in central heating, the wall temperature of the peripheral channels 8 - these being delimited by the first element
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et les zones de connexion du second élément - atteint au niveau de leur section mouillée une température homogène et très voisine de celle du premier élément, ce qui permet d'atteindre, grâce au coefficient d'échange élevé et à la surface développée importante, le niveau du rendement côté chauffage requis par les normes. Les contraintes d'industrialisation et de fabrication d'une chaudière à chauffage central équipée d'un corps de chauffe mixte i selon l'invention demandent de dimensionner au plus juste le circulateur ou l'accélérateur monté sur le circuit de chauffage. La puissance de ce dernier est calculée de manière à compenser les pertes de charge hydrauliques de l'ensemble du circuit. En ce qui concerne les pertes de charge, on relève celles-ci au niveau de la tuyauterie et des radiateurs constituant l'installation de chauffage central, mais aussi au niveau de la chaudière et tout particulièrement au niveau du corps de chauffe, principalement sur les tuyauteries formant les and the connection zones of the second element - reaches a homogeneous temperature at their wet section very close to that of the first element, which makes it possible to reach, thanks to the high exchange coefficient and the large developed surface, level of efficiency on the heating side required by standards. The industrialization and manufacturing constraints of a central heating boiler equipped with a mixed heating body i according to the invention require that the circulator or the accelerator mounted on the heating circuit be dimensioned as accurately as possible. The power of the latter is calculated so as to compensate for the hydraulic head losses of the entire circuit. With regard to the pressure drops, these are noted at the level of the piping and the radiators constituting the central heating installation, but also at the level of the boiler and very particularly at the level of the heating body, mainly on the pipes forming the
premiers 2 et seconds 3 éléments.first 2 and second 3 elements.
Ces premiers 2 et seconds 3 éléments, dont le diamètre hydraulique est optimisé de manière à réduire l'encombrement du corps de chauffe 1, génèrent la majeure partie des pertes de charge hydraulique et, afin de réduire au minimum la puissance installée du circulateur, les premiers éléments 2 du circuit de chauffage central sont reliés à des nourrices 9, 10 disposées de These first 2 and second 3 elements, the hydraulic diameter of which is optimized so as to reduce the size of the heating body 1, generate the major part of the hydraulic head losses and, in order to minimize the installed power of the circulator, the first elements 2 of the central heating circuit are connected to feeders 9, 10 arranged
part et d'autre de l'échangeur.on either side of the exchanger.
La circulation de l'eau de chauffage central s'effectue en parallèle au sein de ces nourrices, de manière à garantir un The circulation of the central heating water takes place in parallel within these tanks, so as to guarantee a
débit identique dans chacun des canaux 8. identical flow in each channel 8.
Par contre, la circulation de l'eau sanitaire est réalisée en série et successivement au sein de la pluralité des seconds On the other hand, the circulation of sanitary water is carried out in series and successively within the plurality of second
éléments 3.elements 3.
Selon un procédé d'élaboration d'un corps de chauffe 1 selon l'invention, celui-ci comporte une succession d'étapes simples se décomposant en: According to a process for developing a heating body 1 according to the invention, it comprises a succession of simple steps, broken down into:
- Une première étape qui consiste à réaliser deux demi- - A first step which consists in carrying out two half
coquilles 11, 12. Chaque demi-coquille 11, 12 comporte essentiellement une pluralité de premiers éléments 2 s'étendant sous la forme de tubes semi-cylindriques ou semi-ovales, shells 11, 12. Each half-shell 11, 12 essentially comprises a plurality of first elements 2 extending in the form of semi-cylindrical or semi-oval tubes,
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préférentiellement au nombre de cinq à huit, disposés en parallèle et reliés à chacune de leurs extrémités à une nourrice 9, 10. Ces divers éléments sont réalisés selon le cas, en cuivre preferably five to eight in number, arranged in parallel and connected at each of their ends to a manifold 9, 10. These various elements are made as appropriate, of copper
ou en acier inoxydable.or stainless steel.
Selon un premier mode d'obtention, ces demi-coquilles 11, 12 sont réalisées directement par emboutissage d'une feuille métallique, étant entendu qu'il existe deux matrices différentes respectivement en fonction de l'obtention d'une demi-coquille According to a first method of obtaining, these half-shells 11, 12 are produced directly by stamping a metal sheet, it being understood that there are two different dies respectively depending on the obtaining of a half-shell
supérieure et d'une demi-coquille inférieure. upper and a lower half-shell.
Selon un second mode de réalisation, les divers éléments (les premiers éléments 2 semi-cylindriques ou semi-ovales, les demi-nourrices latérales 9, 10) sont élaborés séparément, notamment par emboutissage, et sont rendus solidaires par une seconde opération consistant par exemple en une phase de soudage According to a second embodiment, the various elements (the first semi-cylindrical or semi-oval elements 2, the side half-nurses 9, 10) are produced separately, in particular by stamping, and are made integral by a second operation consisting of example in a welding phase
ou de brasage.or soldering.
Les demi-coquilles 11, 12 inférieure et supérieure diffèrent l'une de l'autre principalement en ce que l'une d'elles dispose sur la paroi externe des nourrices latérales 9, 10, d'orifices 13 permettant la connexion aux divers circuits de chauffage The lower and upper half-shells 11, 12 differ from each other mainly in that one of them has on the external wall of the side housings 9, 10, orifices 13 allowing connection to the various circuits of heating
sanitaire et de chauffage central.sanitary and central heating.
- Une deuxième étape consistant en la fabrication des seconds éléments 3 destinés à la circulation de l'eau du circuit - A second step consisting in the manufacture of the second elements 3 intended for the circulation of the water of the circuit
de chauffage sanitaire.sanitary heating.
Ces seconds éléments 3, dont la section droite est complexe, notamment de profil cruciforme, sont obtenus à partir de tubes cylindriques livrés en couronne, par un cycle soit de profilage en croix puis cintrage de ces derniers de manière à conformer une succession d'épingles formant un serpentin, soit de cintrage These second elements 3, the cross section of which is complex, in particular of cruciform profile, are obtained from cylindrical tubes delivered in a crown, by a cycle of either cross profiling then bending of the latter so as to conform a succession of pins forming a serpentine, either bending
de tube cylindrique suivi d'une étape d'hydroformage. of cylindrical tube followed by a hydroforming step.
Ces procédés d'élaboration des seconds éléments 3 permettent d'obtenir une épaisseur constante tout au long du serpentin, ce qui garantit l'absence de points faibles au niveau de la corrosion. On peut noter également que le recours à un serpentin monobloc supprime toute liaison brasée entre le circuit de chauffage de l'eau sanitaire et le circuit de chauffage de l'eau These processes for developing the second elements 3 make it possible to obtain a constant thickness all along the coil, which guarantees the absence of weak points at the level of corrosion. It can also be noted that the use of a one-piece coil eliminates any brazed connection between the domestic water heating circuit and the water heating circuit
de chauffage central.central heating.
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- Une troisième étape consiste à disposer, au sein des demi- - A third step consists in having, within half
coquilles 11, 12 constituées essentiellement de premiers éléments 2 reliés à leurs extrémités à des nourrices 9, 10, le shells 11, 12 consisting essentially of first elements 2 connected at their ends to nurses 9, 10, the
serpentin de seconds éléments 3.second element coil 3.
Avantageusement, le serpentin est disposé dans la demi- coquille inférieure 12 car cette dernière comporte les orifices Advantageously, the coil is arranged in the lower half-shell 12 because the latter has the orifices
13 de connexion aux divers circuits. 13 for connection to the various circuits.
- Une quatrième étape consiste à interposer entre les plans de joints 14 délimités par les demi-coquilles 11, 12 inférieure et supérieure, des baguettes de brasure 15 et à placer au-dessus des tubes cylindriques ou ovales des premiers éléments 1, une pluralité d'ailettes 16, et à ramener les bords rabattus des ailettes initialement perpendiculaires au- dessus des tubes de manière à conformer un corps de chauffe mixte 1 manipulable, - A fourth step consists in interposing between the joint planes 14 delimited by the lower and upper half-shells 11, 12, brazing rods 15 and placing above the cylindrical or oval tubes of the first elements 1, a plurality of 'fins 16, and to bring the folded edges of the fins initially perpendicular above the tubes so as to conform a mixed heating body 1 which can be manipulated,
mécaniquement solidaire.mechanically united.
- Une cinquième étape consiste à positionner à la base des ailettes 16 et au contact des premiers éléments 2 formant le corps de chauffe, des baguettes de brasure et à disposer l'ensemble dans un four de brasage fonctionnant avantageusement - A fifth step consists in positioning at the base of the fins 16 and in contact with the first elements 2 forming the heating body, brazing rods and placing the assembly in a brazing furnace operating advantageously
sous atmosphère neutre ou réductrice. under neutral or reducing atmosphere.
En sortie de ce four, les échangeurs sont prêts à alimenter la chaine d'assemblage des chaudières sans recours à des étapes ultérieures pour l'assemblage de raccords, coudes divers, nourrices... Selon un autre mode d'assemblage du corps de chauffe, objet de l'invention, l'étape de brasage dit "fort" est remplacée par une étape de brasage dit "doux", consistant essentiellement en une phase d'étamage par trempage. Le corps de chauffe 1 entier est trempé dans un bain d'étain de manière à disposer, d'une part une pellicule d'étain qui protège l'échangeur contre la corrosion et d'autre part, en gardant au matériau de construction de l'ensemble, tel le cuivre, son caractère écroui, d'éviter aux ailettes 16 de se déformer aisément lors des manipulations. Selon un autre mode d'obtention des ailettes, celles-ci au lieu d'être sous forme d'ailettes séparées, se présentent sous At the outlet of this furnace, the exchangers are ready to supply the assembly line of the boilers without recourse to subsequent steps for the assembly of fittings, various elbows, manifolds ... According to another method of assembling the heating body object of the invention, the so-called "strong" soldering step is replaced by a so-called "soft" soldering step, essentially consisting of a tinning phase by dipping. The entire heating body 1 is soaked in a tin bath so as to have, on the one hand a tin film which protects the exchanger against corrosion and on the other hand, keeping the building material from the 'together, like copper, its hardened nature, to prevent the fins 16 from deforming easily during handling. According to another method of obtaining the fins, these instead of being in the form of separate fins, are presented under
la forme d'un accordéon.the shape of an accordion.
Le corps de chauffe tel que décrit précédemment permet un échange thermique parfait entre les fluides contenus dans les deux circuits, par l'intermédiaire d'une surface d'échange importante entre les conduits, obtenue grace à leur disposition relative. Par ailleurs, l'absence de coudes rapportés sur chacun des circuits, les changements de direction étant obtenus par cintrage des tubes des différents circuits, simplifie le mode de fabrication d'échangeur, plus de brasure ni de soudure, ce qui The heating body as described above allows perfect heat exchange between the fluids contained in the two circuits, via a large exchange surface between the conduits, obtained by virtue of their relative arrangement. Furthermore, the absence of added bends on each of the circuits, the changes in direction being obtained by bending the tubes of the different circuits, simplifies the method of manufacturing the exchanger, no more soldering or soldering, which
évite les risques de fuites.avoids the risk of leaks.
Il demeure bien entendu que la présente invention n'est pas Of course, the present invention is not
limitée aux exemples de réalisation décrits et représentés ci- limited to the exemplary embodiments described and represented below
dessus, mais qu'elle en englobe toutes les variantes. above, but that it encompasses all variants.
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Claims (9)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513805A FR2741426B1 (en) | 1995-11-21 | 1995-11-21 | COMBINED COILING HEATER WITH COMPLEX STRAIGHT SECTION |
DE69613944T DE69613944T2 (en) | 1995-11-21 | 1996-11-18 | Meandering, combined heat exchanger with a complex, straight section |
EP96402475A EP0775876B1 (en) | 1995-11-21 | 1996-11-18 | Mixed heat exchanger coil with complex straight section |
PT96402475T PT775876E (en) | 1995-11-21 | 1996-11-18 | COLOR + O SERPENTINA MIXED HEATING WITH COMPLEX CROSS SECTION |
AT96402475T ATE203317T1 (en) | 1995-11-21 | 1996-11-18 | MEANDER-SHAPED COMBINED HEAT EXCHANGER WITH COMPLEX STRAIGHT STRETCH |
ES96402475T ES2159001T3 (en) | 1995-11-21 | 1996-11-18 | MIXED CALORIFUGO ELEMENT WITH SERPENTIN OF COMPLEX STRAIGHT SECTION. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513805A FR2741426B1 (en) | 1995-11-21 | 1995-11-21 | COMBINED COILING HEATER WITH COMPLEX STRAIGHT SECTION |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2741426A1 true FR2741426A1 (en) | 1997-05-23 |
FR2741426B1 FR2741426B1 (en) | 1998-01-23 |
Family
ID=9484775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9513805A Expired - Fee Related FR2741426B1 (en) | 1995-11-21 | 1995-11-21 | COMBINED COILING HEATER WITH COMPLEX STRAIGHT SECTION |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0775876B1 (en) |
AT (1) | ATE203317T1 (en) |
DE (1) | DE69613944T2 (en) |
ES (1) | ES2159001T3 (en) |
FR (1) | FR2741426B1 (en) |
PT (1) | PT775876E (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29800981U1 (en) * | 1998-01-22 | 1999-05-20 | Robert Bosch Gmbh, 70469 Stuttgart | Heat exchanger for fuel-heated water heaters, especially for condensing boilers |
IT1321119B1 (en) * | 2000-12-20 | 2003-12-30 | Merloni Termosanitari Spa | BITERMAL HEAT EXCHANGER, IN PARTICULAR FOR CONDENSATION BOILERS. |
EP1235039A3 (en) * | 2001-02-23 | 2004-03-03 | Metech S.r.l. | Heat exchanger with coil constituted by a tubular element with drop-shaped cross-section |
ATE496270T1 (en) * | 2008-08-07 | 2011-02-15 | Giannoni S P A | BITHERMAL HEAT EXCHANGER AND ITS PRODUCTION |
CN103438737B (en) * | 2013-09-08 | 2015-04-08 | 张伟 | Shell-water-storage warm-air-pipe-bypassing-and-heat-conduction heat exchanger |
PL70118Y1 (en) * | 2013-12-12 | 2018-07-31 | Tomton S R O | Method for heating and cooling, first of all for the hot water central heating systems |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR786832A (en) * | 1934-05-29 | 1935-09-10 | Improvements to temperature exchangers | |
DE2711212A1 (en) * | 1976-03-19 | 1977-09-29 | Nihon Radiator Co | OIL COOLER AND METHOD OF MANUFACTURING IT |
DE3320265A1 (en) * | 1983-06-04 | 1984-12-06 | Heinrich Dr.-Ing. 4290 Bocholt Hampel | Tube-in-tube heat exchanger |
EP0401543A1 (en) * | 1989-06-08 | 1990-12-12 | Robert Bosch Gmbh | neat-exchanger apparatus, especially for a gas or oil fixed water heater |
-
1995
- 1995-11-21 FR FR9513805A patent/FR2741426B1/en not_active Expired - Fee Related
-
1996
- 1996-11-18 ES ES96402475T patent/ES2159001T3/en not_active Expired - Lifetime
- 1996-11-18 EP EP96402475A patent/EP0775876B1/en not_active Expired - Lifetime
- 1996-11-18 AT AT96402475T patent/ATE203317T1/en not_active IP Right Cessation
- 1996-11-18 DE DE69613944T patent/DE69613944T2/en not_active Expired - Fee Related
- 1996-11-18 PT PT96402475T patent/PT775876E/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR786832A (en) * | 1934-05-29 | 1935-09-10 | Improvements to temperature exchangers | |
DE2711212A1 (en) * | 1976-03-19 | 1977-09-29 | Nihon Radiator Co | OIL COOLER AND METHOD OF MANUFACTURING IT |
DE3320265A1 (en) * | 1983-06-04 | 1984-12-06 | Heinrich Dr.-Ing. 4290 Bocholt Hampel | Tube-in-tube heat exchanger |
EP0401543A1 (en) * | 1989-06-08 | 1990-12-12 | Robert Bosch Gmbh | neat-exchanger apparatus, especially for a gas or oil fixed water heater |
Also Published As
Publication number | Publication date |
---|---|
DE69613944T2 (en) | 2002-01-10 |
FR2741426B1 (en) | 1998-01-23 |
EP0775876B1 (en) | 2001-07-18 |
ATE203317T1 (en) | 2001-08-15 |
EP0775876A1 (en) | 1997-05-28 |
DE69613944D1 (en) | 2001-08-23 |
PT775876E (en) | 2001-11-30 |
ES2159001T3 (en) | 2001-09-16 |
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ST | Notification of lapse |