FR2523710A1 - Indirect heat exchanger has flow passage contg. transverse tube bundle - from which individual tubes are removable for renewal or servicing - Google Patents

Indirect heat exchanger has flow passage contg. transverse tube bundle - from which individual tubes are removable for renewal or servicing Download PDF

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Publication number
FR2523710A1
FR2523710A1 FR8204485A FR8204485A FR2523710A1 FR 2523710 A1 FR2523710 A1 FR 2523710A1 FR 8204485 A FR8204485 A FR 8204485A FR 8204485 A FR8204485 A FR 8204485A FR 2523710 A1 FR2523710 A1 FR 2523710A1
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FR
France
Prior art keywords
tubes
conduit
heat exchanger
tube
rings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8204485A
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French (fr)
Inventor
Gerard Journet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR8204485A priority Critical patent/FR2523710A1/en
Publication of FR2523710A1 publication Critical patent/FR2523710A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchanger of the type in which a first fluid is circulated through a main passage in which a transverse tube bundle carries a heating or cooling fluid. Each tube of the bundle has its opposite ends carried by opposite walls of the main passage. Two adjacent tubes are connected in series by a 180 deg. return bend on the outside of the main passage. Each tube is mounted with each of its two ends slidably engaged inside a coaxial sleeve which is itself engaged slidably in an axial direction in a hole through the adjacent wall of the main passage. Leakproof, annular joints are fitted between the sleeve and the tube and between the sleeve and the surface of the hole in the wall. The 180 deg. return bends joining adjacent tubes are made of flexible pipe of which the ends are joined to the two sleeves of adjacent tubes. Pref. the tubes have radial exterior gills and each tube is shorter than the distance between opposed walls of the main passage, the coupling sleeve projecting into the inside of the passage. This is an indirect heat exchanger which is partic. suitable for heating viscous fluids, e.g. massecuite in sugar refinement, by circulating steam or hot water through the tube bundle. It now becomes possible to remove and renew any single tube which becomes defective. Previously defective tubes had to be blanked off and could only be renewed when the complete tube bundle was replaced.

Description

La présente invention concerne les échangeurs de chaleur constitués par un conduit où circule un premier fluide et un faisceau de tubes disposés transversalement dans ledit conduit, dont les deux extrémités sont suppor tées par deux parois opposées du dit conduit et qui sont parcourus par un second fluide, au moins certains de ces tubes étant connectés en série au moyen de coudes situés à l'extérieur du dit conduit et reliant les extrémités adjacentes de deux tubes. The present invention relates to heat exchangers constituted by a duct through which a first fluid circulates and a bundle of tubes arranged transversely in said duct, the two ends of which are supported by two opposite walls of said duct and which are traversed by a second fluid , at least some of these tubes being connected in series by means of elbows located outside said conduit and connecting the adjacent ends of two tubes.

Un tel échangeur peut être utiliséRen particulier, pour réchauffer des produits pâteux, tels qu'une massecuite de sucrerie, au moyen d'eau chaude ou de vapeur. In particular, such an exchanger can be used to heat pasty products, such as a candy massecuite, using hot water or steam.

Dans les échangeurs connus de ce type, les tubes sont fixés par soudage ou dudgeonnage sur les parois opposées du conduit et ne peuvent pas être démontés. Si l'un des tubes du faisceau est percé on peut éventuellement l'isoler, mais si le nombre de tubes défectueux est important il est nécessaire de changer tout le faisceau de tubes ainsi que la portion du conduit qui les supporte. In known exchangers of this type, the tubes are fixed by welding or expansion on the opposite walls of the duct and cannot be dismantled. If one of the tubes in the bundle is pierced, it can possibly be isolated, but if the number of defective tubes is large, it is necessary to change the entire bundle of tubes as well as the portion of the conduit which supports them.

Le but de la présente invention est de remédier à cet inconvénient et de permettre le remplacement facile et rapide des tubes défectueux. The object of the present invention is to remedy this drawback and to allow quick and easy replacement of defective tubes.

L > échangeur objet de l'invention est carsactérisé en ce que les tubes sont montés coulissants à chacune de leurs extrémités dans une bague qui est elle-même moletée coulissante dans un alésage de la paroi adjacente du conduit et qui est munie de joints assurant ltétanchéité, d'une part, entre le tube et la bague et, d'autre part, entre la bague et ladite paroi, et en ce que les coudes reliant entre eux les tubes du faisceau sont constitues par des tuyaux flexibles dont les extrémités sont raccor dées àI'extrémité extérieure des bagues. The exchanger which is the subject of the invention is characterized in that the tubes are slidably mounted at each of their ends in a ring which is itself sliding knurled in a bore in the adjacent wall of the duct and which is provided with seals ensuring sealing , on the one hand, between the tube and the ring and, on the other hand, between the ring and said wall, and in that the elbows connecting the bundle tubes together are constituted by flexible pipes whose ends are connected from the outer end of the rings.

Dans le cas où les tubes sont munis d'ailettes interdisant leur démontage par déplacement longitudinal, à travers les alésages de la paroi du conduit, les tubes cnt une longueur inférieure à la distance séparant les parois opposées du conduit qui supporte les dits tubes et les bagues font saillie à l'intérieur du dit conduit. Cette construction permet de démonter les tubes par l'intérieur du conduit, après avoir écarté les bagues pour dégager les extrémités des tubes. In the case where the tubes are provided with fins preventing their disassembly by longitudinal displacement, through the bores of the wall of the conduit, the tubes are less than the distance separating the opposite walls of the conduit which supports said tubes and the rings protrude inside said conduit. This construction makes it possible to dismantle the tubes from the inside of the duct, after having removed the rings to release the ends of the tubes.

Des moyens sont prévus pour fixer de manière démontable les bagues sur les parois du conduit. Les bagues peuvent, par exemple, comporter une collerette appliquée sur la face extérieure de la paroi du conduit par des moyens de serrage solidaires de la paroi. Means are provided for detachably fixing the rings on the walls of the duct. The rings may, for example, include a flange applied to the external face of the wall of the duct by clamping means integral with the wall.

Des butées sont prévues sur les bagues pour limiter les mouvements longitudinaux des tubes ; ces butées peuvent être constituées par un épaulement circulaire ménagé à l'intérieur des bagues. Stops are provided on the rings to limit the longitudinal movements of the tubes; these stops can be constituted by a circular shoulder formed inside the rings.

Le raccordement des coudes flexibles aux bagues peut être réalisé par emmanchement de l'extrémité des coudes sur un prolongement tubulaire des bagues extérieur au conduit. The connection of the flexible elbows to the rings can be carried out by fitting the end of the elbows onto a tubular extension of the rings outside the duct.

D'autres caractéristiques de l'invention apparaitront à la lecture de la description qui suit et se réfère aux dessins l'accompagnant qui montrent, à titre d'exemple non limitatif, un mode de réalisation de l'invention et sur lesquels
La figure 1 est une vue partiellement en élévation et partiellement en coupe d'un échangeur de chaleur con forme à l'invention cet et
La figure 2 est une vue à plus grande échelle montrant le montage des tubes.Other characteristics of the invention will appear on reading the description which follows and refers to the accompanying drawings which show, by way of nonlimiting example, an embodiment of the invention and in which
FIG. 1 is a view partially in elevation and partially in section of a heat exchanger in accordance with the invention this and
Figure 2 is an enlarged view showing the mounting of the tubes.

L'échangeur représenté sur la figure 1 est constitué par un conduit 10 à section carrée ou rectangulaire et à axe vertical et par un faisceau de tubes 12 traversant le conduit. Ces tubes qui sont munis d'ailettes 13 sont disposés horizontalement, suivant plusieurs rangées superpo sées, sur toute la section du conduit. Les ailettes des tubes voisins peuvent être en contact les unes avec les autres ou légèrement espacées comme représenté sur les dessins. Les tubes de la rangée inférieure et ceux de la rangée supérieure (non représentés) sont raccordés à des collecteurs d'alimentation et d'évacuation, tels que 14, par des tuyaux en caoutchouc 16. Les tubes correspondants des différentes rangées sont connectés en série par des coudes en caoutchouc 18.Le produit à chauffer ou à refroidir s'écoule dans le conduit 10, entre les tubes 12, et le fluide chauffant ou réfrigérant circule à l'intérieur des tubes. The exchanger shown in FIG. 1 is constituted by a duct 10 of square or rectangular section and with a vertical axis and by a bundle of tubes 12 passing through the duct. These tubes which are provided with fins 13 are arranged horizontally, in several superimposed rows, over the entire section of the duct. The fins of the neighboring tubes may be in contact with each other or slightly spaced as shown in the drawings. The tubes of the lower row and those of the upper row (not shown) are connected to supply and exhaust manifolds, such as 14, by rubber hoses 16. The corresponding tubes of the different rows are connected in series by rubber elbows 18. The product to be heated or cooled flows in the conduit 10, between the tubes 12, and the heating or cooling fluid circulates inside the tubes.

Les tubes 12, dont la longueur est inférieure à lté- cartement des parois 20 du conduit 10, sont supportés à leurs extrémités par des bagues 22 montées coulissantes dans des alésages de ces parois et faisant saillie à l'intérieur du conduit. Les tubes sont montés coulissants à l'intérieur des bagues et un épaulement 24 limite leurs mouvements longitudinaux ; au-delà de cet épaulement le diamètre intérieur des bagues est sensiblement égal à celui des tubes. The tubes 12, the length of which is less than the space of the walls 20 of the conduit 10, are supported at their ends by rings 22 slidably mounted in bores of these walls and projecting inside the conduit. The tubes are slidably mounted inside the rings and a shoulder 24 limits their longitudinal movements; beyond this shoulder the inside diameter of the rings is substantially equal to that of the tubes.

Les bagues 22 sont maintenues en place par des dispositifs de serrage constitués par des vis 28 et des rondelles ou des fers plats 30 qui s'appuient sur des collerettes 32 des bagues et les pressent contre la face extérieure des parois 20 du conduit. The rings 22 are held in place by clamping devices constituted by screws 28 and washers or flat irons 30 which rest on the collars 32 of the rings and press them against the external face of the walls 20 of the duct.

Des joints toriques 34 et 36 logés dans des gorges circulaires des bagues 22 assurent ltétanchéité entre les tubes et les bagues et entre ces dernières et l-es parois 20, respectivement. O-rings 34 and 36 housed in circular grooves of the rings 22 provide sealing between the tubes and the rings and between the latter and the walls 20, respectively.

Les bagues 22 comportent un prolongement tubulaire extérieur 38 sur lequel sont emmanchées les extrémités des tuyaux 16 ou des coudes 18. L'étanchéité de cet emmanchement est réalisée par collage ou au moyen de colliers de serrage. The rings 22 comprise an outer tubular extension 38 on which the ends of the pipes 16 or the elbows 18 are fitted. The sealing of this fitting is carried out by gluing or by means of clamps.

Pour démonter un tube défectueux, et le remplacer, on dévisse les vis 28 assurant la fixation des bagues supportant le tube et on déplace les bagues vers l'ex- térieur pour dégager les extrémités du tube ; ce déplacement des bagues est rendu possible par la flexibilité des tuyaux 16 ou des coudes 18. Si le tube fait partie de la rangée supérieure ou de la rangée inférieure, il peut alors être enlevé par l'extrémité correspondante du conduit. Dans le cas contraire il faut auparavant démonter de la même, façon les tubes correspondants des rangées situées au-dessus ou au-dessous du tube défectueux. Pour mettre en place un tube neuf on effectue les opérations inverses. In order to dismantle a defective tube and replace it, the screws 28 which fasten the rings supporting the tube are unscrewed and the rings are moved outwards to clear the ends of the tube; this displacement of the rings is made possible by the flexibility of the pipes 16 or the elbows 18. If the tube is part of the upper row or of the lower row, it can then be removed by the corresponding end of the conduit. If this is not the case, the corresponding tubes must first be disassembled in the same way from the rows above or below the defective tube. To install a new tube, the reverse operations are carried out.

De nombreuses modifications peuvent être apportées au mode de réalisation décrit par l'emploi de moyens techniques équivalents et il doit être entendu que toutes ces modifications entrent dans le cadre de l'invention.  Many modifications can be made to the embodiment described by the use of equivalent technical means and it should be understood that all of these modifications are within the scope of the invention.

Claims (5)

R~EVENDICATIONSR ~ CLAIMS 1. Echangeur de chaleur constitué par un conduit où cir1. Heat exchanger consisting of a duct where cir cule un premier fluide et un faisceau de tubes dispo a first fluid and a bundle of tubes available sés transversalement dans ledit conduit, dont les deux placed transversely in said conduit, both of which extrémités sont supportées par deux parois opposées ends are supported by two opposite walls du dit conduit et qui sont parcourus par un second of the said conduit and which are traversed by a second fluide, au moins certains de ces tubes étant connec fluid, at least some of these tubes being connected tés en série au moyen de coudes situés à l'extérieur tees in series using elbows on the outside du dit conduit et reliant les extrémités adjacentes of the said conduit and connecting the adjacent ends de deux tubes, caractérisé en ce que les tubes (12) of two tubes, characterized in that the tubes (12) sont montés coulissants à chacune de leurs extrémités are slidably mounted at each of their ends dans une bague (22) qui est elle-même montée coulis in a ring (22) which is itself grouted sante dans un alésage de la paroi adjacente (20) du health in a bore in the adjacent wall (20) of the conduit (10) et qui est munie de joints (34, 36) as conduit (10) and which is provided with seals (34, 36) as surant l'étanchéité, d'une part, entre le tube et la on the one hand, sealing between the tube and the bague et, d'autre part, entre la bague et ladite pa ring and, on the other hand, between the ring and said pa roi, et en ce que les coudes (18) reliant entre eux king, and in that the elbows (18) connecting together les tubes (12) sont constitués par des tuyaux flexi the tubes (12) are constituted by flexible hoses bles dont les extrémités sont raccordées à l'extrémi wheat whose ends are connected to the extremi té extérieure des bagues (22). outer tee of the rings (22). 2. Echangeur de chaleur selon la revendication 1, carac2. Heat exchanger according to claim 1, charac térisé en ce que les tubes (12) sont munis d'ailettes terized in that the tubes (12) are provided with fins (13) et leur longueur est inférieure à la distance sé (13) and their length is less than the distance se parant les parois (20) du conduit qui les supporte et covering the walls (20) of the conduit which supports them and en ce que les bagues (22) font saillie à l'intérieur in that the rings (22) project inside du dit conduit (10).  of said conduit (10). 3. Echangeur de chaleur selon la revendication i ou 2,3. Heat exchanger according to claim i or 2, caractérisee en ce que certains tubes sont reliés a  characterized in that certain tubes are connected to des collecteurs (14) par l'intermédiaire de tuyaux collectors (14) via pipes flexibles (16). flexible (16). 4. Echangeur de chaleur selon la revendication l, 2 ou4. Heat exchanger according to claim 1, 2 or 3, caractérisé en ce que les bagues (22) sont mainte 3, characterized in that the rings (22) are main nues en place sur les parois (20) du conduit par des bare in place on the walls (20) of the conduit by dispositifs de serrage (28, 30) solidaires de ces pa clamping devices (28, 30) integral with these pa rois. kings. 5. Echangeur de chaleur selon la revendication 1, 2, 35. Heat exchanger according to claim 1, 2, 3 ou 4, caractérisé en ce que le raccordement des coudes (18) ou des tuyaux flexibles (16) aux bagues (22) est réalisé par emmanchement des coudes ou tuyaux sur un prolongement tubulaire (38) des bagues extérieur au conduit (10).  or 4, characterized in that the connection of the elbows (18) or the flexible pipes (16) to the rings (22) is carried out by fitting the elbows or pipes onto a tubular extension (38) of the rings outside the conduit (10).
FR8204485A 1982-03-17 1982-03-17 Indirect heat exchanger has flow passage contg. transverse tube bundle - from which individual tubes are removable for renewal or servicing Withdrawn FR2523710A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8204485A FR2523710A1 (en) 1982-03-17 1982-03-17 Indirect heat exchanger has flow passage contg. transverse tube bundle - from which individual tubes are removable for renewal or servicing

Applications Claiming Priority (1)

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FR8204485A FR2523710A1 (en) 1982-03-17 1982-03-17 Indirect heat exchanger has flow passage contg. transverse tube bundle - from which individual tubes are removable for renewal or servicing

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162828A2 (en) * 1984-05-24 1985-11-27 Armaturjonsson AB Heat exchanger
FR2613471A1 (en) * 1987-03-30 1988-10-07 Air Ind Thermique Sealing sleeve for a heat exchanger
US4970770A (en) * 1986-02-13 1990-11-20 Flakt, Ab Method of making a coated heat exchanger with tubes and fins
EP0488096A1 (en) * 1990-11-29 1992-06-03 Richard Vetter Heat exchancher with tubes
FR2673275A1 (en) * 1991-02-26 1992-08-28 Valeo Thermique Moteur Sa DEVICE FOR CONNECTING A HEAT EXCHANGER, OF THE SERPENTINE TYPE, TO A FLUID CIRCULATION TUBE.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188975A (en) * 1938-04-27 1940-02-06 Borg Warner Multiple heat exchange unit
FR1258044A (en) * 1960-05-25 1961-04-07 Lummus Nederland N V heat exchanger
US3028149A (en) * 1959-01-28 1962-04-03 Svenska Flaektfabriken Ab Heat-exchangers
US3817219A (en) * 1973-01-12 1974-06-18 T Sweet Heat exchanger
FR2209088A1 (en) * 1972-09-13 1974-06-28 Beth Gmbh Maschf Exhaust gas cooler - with expansion relief for cooling pipes
FR2258606A1 (en) * 1974-01-18 1975-08-18 Alsthom Cgee Tubular heat exchanger - has flexible end plate to take up differential expan4snion
FR2350567A1 (en) * 1976-05-03 1977-12-02 Fives Cail Babcock Tubular heat exchanger - incorporates rings between tubes and tube-plate holes, with joints ensuring fluid-tightness while allowing expansion
FR2371661A2 (en) * 1976-11-17 1978-06-16 Sera Husson Connecting socket for sealing tubes into tube-plate - consists of two sleeves joined together that fit over the tube and into the hole

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188975A (en) * 1938-04-27 1940-02-06 Borg Warner Multiple heat exchange unit
US3028149A (en) * 1959-01-28 1962-04-03 Svenska Flaektfabriken Ab Heat-exchangers
FR1258044A (en) * 1960-05-25 1961-04-07 Lummus Nederland N V heat exchanger
FR2209088A1 (en) * 1972-09-13 1974-06-28 Beth Gmbh Maschf Exhaust gas cooler - with expansion relief for cooling pipes
US3817219A (en) * 1973-01-12 1974-06-18 T Sweet Heat exchanger
FR2258606A1 (en) * 1974-01-18 1975-08-18 Alsthom Cgee Tubular heat exchanger - has flexible end plate to take up differential expan4snion
FR2350567A1 (en) * 1976-05-03 1977-12-02 Fives Cail Babcock Tubular heat exchanger - incorporates rings between tubes and tube-plate holes, with joints ensuring fluid-tightness while allowing expansion
FR2371661A2 (en) * 1976-11-17 1978-06-16 Sera Husson Connecting socket for sealing tubes into tube-plate - consists of two sleeves joined together that fit over the tube and into the hole

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162828A2 (en) * 1984-05-24 1985-11-27 Armaturjonsson AB Heat exchanger
EP0162828A3 (en) * 1984-05-24 1986-10-08 Armaturjonsson Ab Heat exchanger
US4970770A (en) * 1986-02-13 1990-11-20 Flakt, Ab Method of making a coated heat exchanger with tubes and fins
FR2613471A1 (en) * 1987-03-30 1988-10-07 Air Ind Thermique Sealing sleeve for a heat exchanger
EP0488096A1 (en) * 1990-11-29 1992-06-03 Richard Vetter Heat exchancher with tubes
FR2673275A1 (en) * 1991-02-26 1992-08-28 Valeo Thermique Moteur Sa DEVICE FOR CONNECTING A HEAT EXCHANGER, OF THE SERPENTINE TYPE, TO A FLUID CIRCULATION TUBE.
EP0501855A1 (en) * 1991-02-26 1992-09-02 Valeo Thermique Moteur Serpentine heat exchanger
US5224537A (en) * 1991-02-26 1993-07-06 Valeo Thermique Moteur Connecting device for connecting a serpentine heat exchanger to a fluid flow pipe

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