EP0076724A1 - Method of manufacturing a heat exchanger with annularly mounted water tubes - Google Patents
Method of manufacturing a heat exchanger with annularly mounted water tubes Download PDFInfo
- Publication number
- EP0076724A1 EP0076724A1 EP82401723A EP82401723A EP0076724A1 EP 0076724 A1 EP0076724 A1 EP 0076724A1 EP 82401723 A EP82401723 A EP 82401723A EP 82401723 A EP82401723 A EP 82401723A EP 0076724 A1 EP0076724 A1 EP 0076724A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- brazing
- annular
- stainless steel
- collectors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/403—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the water tubes being arranged in one or more circles around the burner
-
- 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
- F28D7/0041—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 for only one medium being tubes having parts touching each other or tubes assembled in panel form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Definitions
- the invention relates to a method for manufacturing a heating body of the sheet type of water tubes arranged around a cylindrical combustion chamber for domestic gas boilers, for example condensing.
- the heating body consists of a sheet of longitudinal water tubes arranged all around a central burner whose combustion gases are emitted radially and pass through this sheet of tubes, the best conditions for exchange between water and gas is obviously sought by the shape and positioning of the tubes.
- These longitudinal water tubes of elongated section are generally brazed between two annular collectors to form a cylindrical combustion chamber around the burner.
- this kind of heating body requires a rather particular technology of materials, assembly and brazing of the tubes on the annular collectors and this because of the large number of tubes and their proximity necessary for a good coefficient of exchange. .
- the present invention therefore relates to a manufacturing process which avoids the abovementioned disadvantages by ensuring, after brazing, strict sealing elements and mechanical holding an excellent thereof while reducing the cost of implementation of the process.
- FIG. 1 a heat exchanger body consisting of two annular collectors 1 and 2 arranged coaxially and joined by longitudinal tubes 3 of stainless steel brazed on the collectors and uniformly distributed between them along the generatrix of a cylinder so as to form a cylindrical interior chamber 4 for the introduction of a tubular burner, not shown.
- These tubes 3 in which the fluid to be heated circulates have an elongated section so that the lateral faces of each tube are parallel to the lateral faces of the neighboring tubes in order to provide between them a gap 5 of small thickness intended for the passage of combustion products .
- a boss 7 (FIG. 2) is produced by a big horn stamping process on the two external parts and at each end 6 of said tubes. These ends are folded inwards to give them a conical profile (Figures 2 and 3) which facilitates their introduction into orifices 8 provided on each manifold.
- annular (1-2), these orifices 8 have a profile identical to that of the tubes 3 so that the manifolds 1 and 2 are supported on the bosses 7 of the tubes 3 ( Figure 4).
- the projecting ends 6 of the tubes 3 (figures: 4 and 5) are spread outwards to form a crimp on the annular collectors, the interior of the tubes being simultaneously calibrated in order to minimize the clearances.
- each annular collector 1 and 2 is automatically deposited in each annular collector 1 and 2, around the ends 6 of the tubes 3, circular beads 9 ( Figure 1) of solder generally in powder or paste.
- This solder must have a very high percentage of nickel and chromium with the addition of various fluxes.
- the actual brazing is carried out in an oven, preferably under vacuum, in order not to risk embrittling the metal in the presence of an atmosphere rich in hydrogen and nitrogen.
- brazing temperature less than or equal to 1000 ° C for about 15 minutes to avoid any grain size. This choice is also a function of the specific qualities of this solder, its resilience and its flowability. Too little resilient brazing would be fragile and flowing brazing would require too little play and would risk going up between the tubes. In addition, if it flows too little, it risks giving leaky seals.
- the ferritic steel of the tubes which has the advantage of allowing the tubes to be welded at high speed by radio frequency must, for corrosion reasons, be stabilized with nobium, the stabilization with titanium being incompatible with vacuum brazing.
Landscapes
- 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)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
L'invention concerne un procédé de fabrication d'un corps de chauffe du type à nappe de tubes d'eau disposés autour d'une chambre de combustion cylindrique pour chaudières domestiques à gaz par exemple à condensation.The invention relates to a method for manufacturing a heating body of the sheet type of water tubes arranged around a cylindrical combustion chamber for domestic gas boilers, for example condensing.
Dans une forme connue de réalisation, le corps de chauffe est constitué d'une nappe de tubes d'eau longitudinaux disposés tout autour d'un brûleur central dont les gaz de combustion sont émis radialement et traversent cette nappe de tubes, les meilleures conditions d'échange entre l'eau et le gaz étant évidemment recherchées par la forme et le positionnement des tubes. Ces tubes d'eau longitudinaux à section allongée sont généralement brasés entre deux collecteurs annulaires pour former une chambre de combustion cylindrique autour du brûleur.In a known embodiment, the heating body consists of a sheet of longitudinal water tubes arranged all around a central burner whose combustion gases are emitted radially and pass through this sheet of tubes, the best conditions for exchange between water and gas is obviously sought by the shape and positioning of the tubes. These longitudinal water tubes of elongated section are generally brazed between two annular collectors to form a cylindrical combustion chamber around the burner.
La conception de ce genre de corps de chauffe exige une technologie assez particulière de matériaux,d'assemblage et de brasage des tubes sur les collecteurs annulaires et ceci en raison du grand nombre de tubes et de leur proximité nécessaire à un bon coefficient d'échange.The design of this kind of heating body requires a rather particular technology of materials, assembly and brazing of the tubes on the annular collectors and this because of the large number of tubes and their proximity necessary for a good coefficient of exchange. .
L'utilisation du cuivre, matériau ayant un bon coefficient de conductibilité et se brasant facilement, présente des inconvénients. En effet, la résistance à la déformation plus particulièrement lorsqu'il s'agit de tubes à faces aplaties,nécessairement recuits pendant l'opération de brasage, est insuffisante pour résister à la pression d'eau normalement utilisée dans une chaudière de chauffage central. Mais de plus et surtout en présence de l'eau de condensation dans les fumées, la corrosion des tubes est extrêmement rapide, certain gaz pouvant même contenir du souffre susceptible de produire de l'acide sulfurique. On peut évidemment protéger le cuivre par un revêtement à base de plomb, mais cela est difficilement applicable du fait de la proximité des tubes, le plomb risquant de remplir les intervalles entre ces tubes. Il est de plus connu que cette protection est limitée dans le temps.The use of copper, a material having a good coefficient of conductivity and which is easily brazed, has drawbacks. In fact, the resistance to deformation, more particularly in the case of tubes with flattened faces, necessarily annealed during the brazing operation, is insufficient to withstand the water pressure normally used in a central heating boiler. But moreover and especially in the presence of the water of condensation in the fumes, the corrosion of the tubes is extremely fast, certain gas being able to even contain sulfur likely to produce sulfuric acid. Copper can obviously be protected by a coating based on lead, but this is difficult to apply because of the proximity of the tubes, lead running the risk of filling the intervals between these tubes. It is also known that this protection is limited in time.
Pour remédier à ces inconvénients, on connait l'emploi de l'acier inoxydable en faible épaisseur qui donne un bon coefficient de transfert calorifique et une résistance suffisante au gonflage sous pression d'eau.To overcome these drawbacks, the use of thin stainless steel is known, which gives a good heat transfer coefficient and sufficient resistance to inflation. under water pressure.
Mais l'utilisation d'un tel acier pour ce genre de corps de chauffe à nappe cylindrique de tubes d'eau entraine une technique d'assemblage et de brasage particulière.However, the use of such a steel for this kind of cylindrical layer heating body of water tubes leads to a particular assembly and brazing technique.
En effet, on connait l'utilisation de brasure à base de cuivre, mais comme il est indiqué plus haut le cuivre s'oxyde rapidement surtour dans les condensats.In fact, we know the use of copper-based solder, but as indicated above, copper oxidizes quickly, especially in condensates.
On connait aussi les brasures tendres à base d'étain et de plomb, mais ces brasures en plus d'une résistance mécanique limitée risquent en cas de surchauffe accidentelle du corps de chauffe d'amener sa destruction du fait de leur faible température de fusion.We also know the soft solder based on tin and lead, but these solder in addition to a limited mechanical resistance risk in case of accidental overheating of the heating body to bring about its destruction due to their low melting temperature.
Une brasure à base d'argent est éventuellement possible mais d'un coût prohibitif. Il en est de même d'une soudure électrique TIG ou MIG sous gaz protecteur qui oblige à suivre par des torches la totalité du contour des assemblages à effectuer ce qui rend l'opération très longue et très coûteuse.Silver brazing is possibly possible but prohibitively expensive. The same is true of an electrical TIG or MIG welding under protective gas which requires torches to follow the entire contour of the assemblies to be carried out, which makes the operation very long and very expensive.
La présente invention a donc pour objet un procédé de fabrication qui évite les inconvénients précités en garantissant, après brasage, une étanchéité rigoureuse des éléments ainsi' qu'une excellente tenue mécanique de ceux-ci tout en réduisant le coût de la mise en oeuvre du procédé.The present invention therefore relates to a manufacturing process which avoids the abovementioned disadvantages by ensuring, after brazing, strict sealing elements and mechanical holding an excellent thereof while reducing the cost of implementation of the process.
Le procédé conforme à l'invention consiste :
- - à mettre les tubes longitudinaux à la longueur désirée,
- - à ébavurer les extrémités des tubes,
- - à former un bossage sur la partie externe et éventuellement interne , à chaque extrémité des tubes, pour former des appuis aux collecteurs annulaires,
- - à rabattre vers l'intérieur les extrémités des tubes pour leur donner un profil conique et faciliter ainsi leur introduction dans les collecteurs,
- - à disposer les tubes entre les deux collecteurs annulaires en les introduisant dans des orifices correspondants,
- - à évaser les extrémités débordantes des tubes pour former un sertissage sur les collecteurs annulaires,
- - à calibrer simultanément l'intérieur des tubes pour obtenir entre les tubes et les collecteurs un jeu minimum inférieur à 0,1 mm compatible avec la brasure,
- - à déposer dans chaque collecteur annulaire tangentiellement aux extrémités des tubes des cordons circulaires de brasure,
- - et à disposer l'ensemble compact dans un four de brasage dans des conditions adaptées pour réaliser le brasage des tubes dans les collecteurs.
- - to put the longitudinal tubes to the desired length,
- - deburring the ends of the tubes,
- - forming a boss on the external and possibly internal part, at each end of the tubes, to form supports for the annular collectors,
- - fold the ends of the tubes inwards to give them a conical profile and thus facilitate their introduction into the collectors,
- - to arrange the tubes between the two annular collectors by introducing them into corresponding orifices,
- - to flare the projecting ends of the tubes to form a crimp on the annular collectors,
- - simultaneously calibrate the interior of the tubes to obtain a minimum clearance between the tubes and the collectors of less than 0.1 mm compatible with the solder,
- - to deposit in each annular collector tangentially to the ends of the tubes of the circular brazing beads,
- - And to have the compact assembly in a brazing furnace under conditions suitable for carrying out the brazing of the tubes in the manifolds.
D'autres caractéristiques particulières et avantages de l'invention apparaîtront à la lecture de la description qui va suivre d'une forme de réalisation en référence aux dessins annexés qui représentent :
- - figure 1 : une vue en perspective éclatée du corps de chauffe.
- - figures 2 à 5 : des vues schématiques en coupe montrant les étapes du procédé d'assemblage des tubes sur les collecteurs annulaires.
- - Figure 1: an exploded perspective view of the heating body.
- - Figures 2 to 5: schematic sectional views showing the steps of the method of assembling the tubes on the annular manifolds.
On a représenté sur la figure 1 un corps de chauffe-échangeur constitué par deux collecteurs annulaires 1 et 2 disposés coaxialement et réunis par des tubes 3 longitudinaux en acier inoxydable brasés sur les collecteurs et uniformément répartis entre ceux-ci suivant la génératrice d'un cylindre de façon à former une chambre intérieure cylindrique 4 pour l'introduction d'un brûleur tubulaire non représenté.There is shown in Figure 1 a heat exchanger body consisting of two
Ces tubes 3 dans lesquels circule le fluide à réchauffer ont une section allongée de telle manière que les faces latérales de chaque tube soient parallèles aux faces latérales des tubes voisins afin de ménager entre elles un intervalle 5 de faible épaisseur destiné au passage des produits de combustion.These
En se reportant aux figures 2 à 5, on va maintenant décrire le procédé d'assemblage d'un tel corps de chauffe.Referring to Figures 2 to 5, we will now describe the method of assembling such a heating body.
Après avoir mis les tubes 3 à la longueur voulue et ébavuré les extrémités, un bossage 7 (figure 2) est réalisé par un procédé d'estampage en bigorne sur les deux parties externes et à chaque extrémité 6 desdits tubes. Ces extrémités sont rabattues vers l'intérieur pour leur donner un profil conique (figures2 et 3) ce qui facilite leur introduction dans des orifices 8 prévus sur chaque collecteur annulaire (1-2), ces orifices 8 ont un profil identique à celui des tubes 3 de telle manière que les collecteurs 1 et 2 soient en appui sur les bossages 7 des tubes 3 (figure 4). Ensuite, les extrémités débordantes 6 des tubes 3 (figures : 4 et 5) sont épanouies vers l'extérieur pour former un sertissage sur les collecteurs annulaires, l'intérieur des tubes étant simultanément calibré afin de réduire au minimum les jeux.After having put the
Ce calibrage doit limiter au maximum les jeux entre les tubes et les orifices découpés dans les collecteurs annulaires pour permettre d'assurer un brasage correct. De plus, l'ensemble de ces opérations contribue à donner au corps de chauffe une rigidité suffisante pour le brasage, sans montages complémentaires qui pourraient obliger à des protections par produit ou formes spéciales afin d'empêcher la brasure de couler avec le risque que cela comporte de braser ensemble pièces à braser et montages de maintien et augmenteraient le coût de l'opération de brasage (masse plus grande à chauffer -encombrement supérieur des pièces).This calibration must limit as much as possible the play between the tubes and the orifices cut out in the annular manifolds to allow correct brazing to be ensured. In addition, all of these operations contribute to giving the heating body sufficient rigidity for soldering, without additional assemblies which could require protection by product or special shapes to prevent the solder from leaking with the risk of this. involves brazing together the parts to be brazed and the mounting fixtures and would increase the cost of the brazing operation (greater mass to be heated-greater space requirement of the parts).
Une fois que cet assemblage est réalisé, on dépose automatiquement dans chaque collecteur annulaire 1 et 2, autour des extrémités 6 des tubes 3, des cordons circulaires 9 (figure 1) de brasure généralement en poudre ou en pâte. Cette brasure doit être à très fort pourcentage de nickel et de chrome additionné de fondants divers. Le brasage proprement dit s'effectue dans un four de préférence sous vide pour ne pas risquer en présence d'une atmosphère riche en hydrogène et azote de fragiliser le métal..Once this assembly is achieved, is automatically deposited in each
Le choix exact de la brasure et de la température correspondante est fonction de l'acier inoxydable utilisé, un acier ferritique plus économique et insensible aux corrosions sous contrainte demandera une température de brasage inférieure ou égale à 1000 °C pendant environ 15 minutes pour éviter tout grossissemet du grain. Ce choix est aussi fonction des qualités propres de cette brasure, de sa résilience et de sa coulabilité. Une brasure trop peu résiliente serait fragile et une brasure coulante exigerait des jeux trop réduits et risquerait de remonter entre les tubes. De plus si elle coule trop peu, elle risque de donner des joints non étanches. L'acier ferritique des tubes qui a l'avantage de permettre la soudure des tubes en grande vitesse par radio-fréquence doit, pour des questions de corrosion, être stabilisée au nobium, la stabilisation au titane étant incompatible avec le brasage sous vide.The exact choice of brazing and the corresponding temperature depends on the stainless steel used, a more economical ferritic steel and insensitive to stress corrosion will require a brazing temperature less than or equal to 1000 ° C for about 15 minutes to avoid any grain size. This choice is also a function of the specific qualities of this solder, its resilience and its flowability. Too little resilient brazing would be fragile and flowing brazing would require too little play and would risk going up between the tubes. In addition, if it flows too little, it risks giving leaky seals. The ferritic steel of the tubes which has the advantage of allowing the tubes to be welded at high speed by radio frequency must, for corrosion reasons, be stabilized with nobium, the stabilization with titanium being incompatible with vacuum brazing.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8118073 | 1981-09-25 | ||
FR8118073A FR2513554A1 (en) | 1981-09-25 | 1981-09-25 | PROCESS FOR MANUFACTURING A HEATING BODY OF THE TYPE OF A CYLINDRICAL FLOAT OF WATER TUBES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0076724A1 true EP0076724A1 (en) | 1983-04-13 |
EP0076724B1 EP0076724B1 (en) | 1985-12-27 |
Family
ID=9262452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19820401723 Expired EP0076724B1 (en) | 1981-09-25 | 1982-09-23 | Method of manufacturing a heat exchanger with annularly mounted water tubes |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0076724B1 (en) |
DE (1) | DE3268161D1 (en) |
FR (1) | FR2513554A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2570814A1 (en) * | 1984-09-25 | 1986-03-28 | Newtec Int | HEAT EXCHANGER WITH TUBE BEAM, ESPECIALLY FOR A MOTOR VEHICLE |
EP0305702A1 (en) * | 1987-08-25 | 1989-03-08 | Behr GmbH & Co. | Heat exchanger with a finned tube arrangement |
EP0581644A1 (en) * | 1992-07-30 | 1994-02-02 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Heat-exchanger for a compact cooling and heating system and for an air conditioning system, particularly for motor vehicles |
EP1179723A2 (en) * | 2000-08-09 | 2002-02-13 | Deltacalor S.r.L. | Heating device |
WO2007031306A1 (en) * | 2005-09-16 | 2007-03-22 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles |
CN100376855C (en) * | 2005-05-10 | 2008-03-26 | 顺德职业技术学院 | Water vapour coagulator |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE461002A (en) * | ||||
GB414622A (en) * | 1934-04-13 | 1934-08-09 | Babcock & Wilcox Ltd | System of connecting nozzles or branch pipes to pressure vessels |
FR88748E (en) * | 1967-06-02 | |||
GB1232414A (en) * | 1968-02-02 | 1971-05-19 | ||
FR2189142A2 (en) * | 1972-06-23 | 1974-01-25 | Chausson Usines Sa | |
FR2463368A1 (en) * | 1979-08-09 | 1981-02-20 | Saunier Duval | Gas heated boiler with vertical water circulating tubes - has tubes with rounded ends and straight sides inclined towards centre |
-
1981
- 1981-09-25 FR FR8118073A patent/FR2513554A1/en active Granted
-
1982
- 1982-09-23 EP EP19820401723 patent/EP0076724B1/en not_active Expired
- 1982-09-23 DE DE8282401723T patent/DE3268161D1/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE461002A (en) * | ||||
FR88748E (en) * | 1967-06-02 | |||
GB414622A (en) * | 1934-04-13 | 1934-08-09 | Babcock & Wilcox Ltd | System of connecting nozzles or branch pipes to pressure vessels |
GB1232414A (en) * | 1968-02-02 | 1971-05-19 | ||
FR2189142A2 (en) * | 1972-06-23 | 1974-01-25 | Chausson Usines Sa | |
FR2463368A1 (en) * | 1979-08-09 | 1981-02-20 | Saunier Duval | Gas heated boiler with vertical water circulating tubes - has tubes with rounded ends and straight sides inclined towards centre |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2570814A1 (en) * | 1984-09-25 | 1986-03-28 | Newtec Int | HEAT EXCHANGER WITH TUBE BEAM, ESPECIALLY FOR A MOTOR VEHICLE |
EP0177389A1 (en) * | 1984-09-25 | 1986-04-09 | Valeo | Tube bundle heat exchanger, especially for a motor vehicle |
US4682650A (en) * | 1984-09-25 | 1987-07-28 | Valeo | Heat exchanger of the tube bank type, in particular for an automotive vehicle |
EP0305702A1 (en) * | 1987-08-25 | 1989-03-08 | Behr GmbH & Co. | Heat exchanger with a finned tube arrangement |
EP0581644A1 (en) * | 1992-07-30 | 1994-02-02 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Heat-exchanger for a compact cooling and heating system and for an air conditioning system, particularly for motor vehicles |
FR2694385A1 (en) * | 1992-07-30 | 1994-02-04 | Renault | Heat exchanger device, compact cooling and heating system and air conditioning system comprising such a heat exchanger device, in particular for a motor vehicle. |
EP1179723A2 (en) * | 2000-08-09 | 2002-02-13 | Deltacalor S.r.L. | Heating device |
EP1179723A3 (en) * | 2000-08-09 | 2003-03-26 | Deltacalor S.r.L. | Heating device |
CN100376855C (en) * | 2005-05-10 | 2008-03-26 | 顺德职业技术学院 | Water vapour coagulator |
WO2007031306A1 (en) * | 2005-09-16 | 2007-03-22 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles |
US8002022B2 (en) | 2005-09-16 | 2011-08-23 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles |
Also Published As
Publication number | Publication date |
---|---|
FR2513554B1 (en) | 1983-12-09 |
DE3268161D1 (en) | 1986-02-06 |
FR2513554A1 (en) | 1983-04-01 |
EP0076724B1 (en) | 1985-12-27 |
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