EP0757221A1 - Wärmetauscher, insbesondere eine gelötete Ausführungsform für Kraftfahrzeug - Google Patents

Wärmetauscher, insbesondere eine gelötete Ausführungsform für Kraftfahrzeug Download PDF

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Publication number
EP0757221A1
EP0757221A1 EP96111919A EP96111919A EP0757221A1 EP 0757221 A1 EP0757221 A1 EP 0757221A1 EP 96111919 A EP96111919 A EP 96111919A EP 96111919 A EP96111919 A EP 96111919A EP 0757221 A1 EP0757221 A1 EP 0757221A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
fluid
exchanger according
collecting plate
distributor device
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Withdrawn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
EP96111919A
Other languages
English (en)
French (fr)
Inventor
Carlos Martins
Martin Wurmser
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.)
Valeo Climatisation SA
Original Assignee
Valeo Climatisation 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 Valeo Climatisation SA filed Critical Valeo Climatisation SA
Publication of EP0757221A1 publication Critical patent/EP0757221A1/de
Withdrawn legal-status Critical Current

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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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers

Definitions

  • the invention relates to a heat exchanger, in particular of the brazed type, for a motor vehicle.
  • a heat exchanger of the type comprising a collecting plate provided with holes, a bundle of tubes the ends of which are engaged in sealing in the holes of the collecting plate, as well as a fluid box covering the collecting plate and provided a fluid inlet for a fluid circulating in the heat exchanger.
  • Heat exchangers of this type are already known which can be produced either by mechanical assembly or by brazing.
  • the ends of the tubes are engaged in sealing in the holes of the collector plate by means of a seal and the fluid box is assembled to the collector plate by means of claws.
  • all the elements of the heat exchanger are assembled by brazing, preferably during the same operation.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • a heat exchanger of the type defined in the introduction which comprises a flow distributor device arranged inside the fluid box, between the fluid inlet and the collecting plate, so as to prevent direct impact of the fluid on the ends of the tubes in the vicinity of the fluid inlet.
  • this distributor device has a beneficial effect on the operation of the heat exchanger by allowing a uniform supply of all the tubes of the bundle. This results in an improvement in the performance of the heat exchanger and an improvement in its service life.
  • the distributor device of the invention can be easily installed in known heat exchangers, without requiring modifications to the components, in particular the manifold plate and the fluid box.
  • the distributor device comprises a body kept at a distance from the collector plate. This distance maintenance is advantageously obtained by means of lugs bearing on the collector plate.
  • the body of the device has at least one slope facilitating the flow of the fluid.
  • the body has a double roof-shaped slope, the apex of which is directed towards the fluid inlet.
  • the body of the exchanger depends on a transverse partition dividing the interior of the fluid box into two adjacent compartments.
  • the device is a folded metal sheet, stamped and cut.
  • the body of the device depends on a partition
  • the latter are advantageously formed in one piece from a folded metal sheet, stamped and cut.
  • the body is connected, on the one hand, to the partition, by a fold line capable of bearing against the collecting plate and, on the other hand, to at least one tab also bearing against the header plate.
  • the device of the invention is produced from a sheet
  • an aluminum sheet which can be plated on at least one face by a brazing alloy to allow the device to be brazed. distributor in the fluid box.
  • the distributor device is brazed essentially on the collector plate.
  • the brazing of the device on the collector plate is carried out at the same time as the assembly operation of the heat exchanger by brazing.
  • the heat exchanger can be assembled by brazing in a single operation in a suitable oven.
  • the heat exchanger shown in Figures 1 and 2 comprises a bundle 10 formed of a multiplicity of tubes 12 of oblong section, also called “flat tubes", between which are arranged corrugated inserts 14 forming cooling fins.
  • the bundle 10 also comprises two end plates 16 framing the end fins.
  • Each of the tubes 12 has one end 18 which is engaged in sealing in a hole 20 of homologous shape of a collecting plate 22, also called “plate with holes”.
  • the latter comprises a flat bottom 24 of generally rectangular shape in which are formed as many holes 20 as there are tubes 12 in the bundle.
  • the bottom 24 is connected perpendicularly to a peripheral border 26.
  • the collector plate 22 is capped by a fluid box 28 having an upper wall 30 of generally rectangular shape which is connected to a peripheral wall 32 which fits into the edge 26, which allows the fluid box 28 to cap the plate collector 22.
  • an inlet 34 and an outlet 36 are formed in the thickness of the wall 30 to allow respectively the admission and evacuation of a fluid intended to pass through the tubes of the bundle.
  • This fluid can be, for example, water with an antifreeze added.
  • the fluid enters the fluid box through the inlet 34 and exits it through the outlet 36, as shown respectively by the arrows F1 and F2.
  • the different components of the heat exchanger i.e. the tubes 12, the fins 14, the end plates 16, the manifold plate 22 and the fluid box 28 are, in the example, all formed from an aluminum plate plated with a brazing alloy on at least one side, to allow assembly of the heat exchanger in a single brazing operation in a suitable oven.
  • This erosion can sometimes lead to a rupture of the seal at the connection between a tube end and the manifold plate.
  • the heat exchanger comprises a flow distributor device 38 which is arranged inside the fluid box, between the fluid inlet 34 and the collecting plate 22.
  • This device 38 comprises a body 40 provided with two roof-shaped slopes 42 joined together by a top 44 which extends opposite the fluid inlet 34 and parallel to the direction of the row of bundle tubes.
  • the body 40 is kept at a distance from the collecting plate 22.
  • the body 40 is made from an aluminum sheet plated with a brazing alloy on at least one of its faces. This sheet is folded, stamped and cut so as to also form two tabs 46 bent at right angles and coming to bear against the bottom 24 of the collector plate 22 in a region between two adjacent holes 20.
  • the body 40 is further connected, on the side opposite the legs 46, to a transverse partition 48 by a fold line 50 in the shape of a U.
  • the partition 48 extends in a direction perpendicular to the plane of the bottom 24 and is intended to delimit, inside the fluid box, two separate compartments communicating respectively with the inlet 34 and the outlet 36.
  • the body 30 and the partition 48 are thus formed in one piece in a folded metal sheet, stamped and cut which is introduced for mounting between the manifold plate 22 and the fluid box 28.
  • the device 38 is located thus brazed to both the header plate 22 and the fluid box 28 during the brazing operation.
  • the ends of the tubes which are in the immediate vicinity of the inlet 34 are not eroded due to the pressure of the fluid.
  • the presence of the device 10 makes it possible to standardize the supply of all the tubes of the bundle, which at the same time improves the performance of the heat exchanger.
  • the device 10 can be installed in already existing heat exchangers, without requiring modifications to the latter.
  • the flow distributor device could also be used in mechanically assembled heat exchangers, in which the ends of the tubes are tightly connected to the collector plate by means of a flexible seal.
  • the flow distributor device is integral with the fluid box.
  • the device of the invention finds a particular application in the case of heat exchangers for motor vehicles.

Landscapes

  • 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)
EP96111919A 1995-07-31 1996-07-24 Wärmetauscher, insbesondere eine gelötete Ausführungsform für Kraftfahrzeug Withdrawn EP0757221A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9509313 1995-07-31
FR9509313A FR2737559B1 (fr) 1995-07-31 1995-07-31 Echangeur de chaleur, en particulier du type brase, pour vehicule automobile

Publications (1)

Publication Number Publication Date
EP0757221A1 true EP0757221A1 (de) 1997-02-05

Family

ID=9481566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111919A Withdrawn EP0757221A1 (de) 1995-07-31 1996-07-24 Wärmetauscher, insbesondere eine gelötete Ausführungsform für Kraftfahrzeug

Country Status (2)

Country Link
EP (1) EP0757221A1 (de)
FR (1) FR2737559B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6557338B2 (en) 2000-01-21 2003-05-06 Rolls-Royce Plc Thrust reverser for a gas turbine engine
US6725541B1 (en) 2000-01-21 2004-04-27 Rolls-Royce Plc Flow directing element and a method of manufacturing a flow directing element
FR2910120A1 (fr) * 2006-12-14 2008-06-20 Valeo Systemes Thermiques Boite a eau pour echangeur de chaleur et echangeur de chaleur comportant une telle boite a eau
US10996002B2 (en) * 2016-10-12 2021-05-04 Denso Corporation Evaporator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322789C (de) * 1918-01-27 1920-07-08 Norddeutsche Kuehlerfabrik G M Wasserverteiler fuer Kuehler von Fahrzeugmotoren
FR2496864A3 (fr) * 1980-12-24 1982-06-25 Sueddeutsche Kuehler Behr Echangeur de chaleur destine en particulier a l'installation de chauffage ou de climatisation d'un vehicule
US5186249A (en) * 1992-06-08 1993-02-16 General Motors Corporation Heater core
US5465783A (en) * 1994-03-04 1995-11-14 Fedco Automotive Components Company, Inc. Sacrificial erosion bridge for a heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322789C (de) * 1918-01-27 1920-07-08 Norddeutsche Kuehlerfabrik G M Wasserverteiler fuer Kuehler von Fahrzeugmotoren
FR2496864A3 (fr) * 1980-12-24 1982-06-25 Sueddeutsche Kuehler Behr Echangeur de chaleur destine en particulier a l'installation de chauffage ou de climatisation d'un vehicule
US5186249A (en) * 1992-06-08 1993-02-16 General Motors Corporation Heater core
US5465783A (en) * 1994-03-04 1995-11-14 Fedco Automotive Components Company, Inc. Sacrificial erosion bridge for a heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6557338B2 (en) 2000-01-21 2003-05-06 Rolls-Royce Plc Thrust reverser for a gas turbine engine
US6725541B1 (en) 2000-01-21 2004-04-27 Rolls-Royce Plc Flow directing element and a method of manufacturing a flow directing element
FR2910120A1 (fr) * 2006-12-14 2008-06-20 Valeo Systemes Thermiques Boite a eau pour echangeur de chaleur et echangeur de chaleur comportant une telle boite a eau
US10996002B2 (en) * 2016-10-12 2021-05-04 Denso Corporation Evaporator

Also Published As

Publication number Publication date
FR2737559A1 (fr) 1997-02-07
FR2737559B1 (fr) 1997-09-12

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