EP3298338B1 - Wärmeaustauscher, insbesondere für kraftfahrzeug - Google Patents

Wärmeaustauscher, insbesondere für kraftfahrzeug Download PDF

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Publication number
EP3298338B1
EP3298338B1 EP16723763.5A EP16723763A EP3298338B1 EP 3298338 B1 EP3298338 B1 EP 3298338B1 EP 16723763 A EP16723763 A EP 16723763A EP 3298338 B1 EP3298338 B1 EP 3298338B1
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EP
European Patent Office
Prior art keywords
collars
heat exchanger
collecting plate
tubes
collar
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.)
Active
Application number
EP16723763.5A
Other languages
English (en)
French (fr)
Other versions
EP3298338A1 (de
Inventor
Christian Riondet
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 Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP3298338A1 publication Critical patent/EP3298338A1/de
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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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00—Sealing means

Definitions

  • the invention relates to the field of heat exchangers, in particular for motor vehicles.
  • An exchanger according to the preamble of claim 1 is known from the document WO 2012/26664 .
  • the invention relates more particularly to a heat exchanger, such as a radiator for engine coolant, conventionally comprising a row of tubes interposed with corrugated fins and a collector plate.
  • the collector plate generally made of aluminum by a stamping process, has a certain number of holes each surrounded by a collar.
  • the term “collar” designates in this case a crown of material which projects from the collector plate, resulting from the process for producing the holes, generally by puncturing during which the plate is pierced without removal of material.
  • Each of the holes is suitable for receiving a tube from the row of tubes, one end of which comes into contact with the interior wall of the collar.
  • the collector plate is often capped by a cover so as to form a collector box comprising a chamber traversed by a fluid which also circulates in the row of tubes. Thus, it can distribute liquid to the tubes and / or collect liquid from the tubes.
  • a peripheral seal is arranged between the manifold plate and the cover to seal the manifold. The positioning of the peripheral seal varies according to the structure of the collector plate.
  • collector plates so-called “flat” collector plates and so-called “grooved” collector plates.
  • the flat collector plates have a generally flat structure, having no pronounced positive or negative reliefs other than the collars. For example, these are the plates described in the patent application FR-2 977 932 in the name of the plaintiff.
  • grooved collector plates like those described in the patent US-6,988,544 , have a peripheral groove extending outside the main plane from which the collars are made.
  • the grooved collector plates there is a variant of collector plates called "grooved with flat ends".
  • the peripheral groove of these collector plates is not present or is shallow at the ends in the direction of the length of the collector plate.
  • the peripheral seal is placed in the peripheral groove intended to receive it.
  • the seal is mainly carried by the most extreme tubes of the row of tubes.
  • the tubes are generally inserted in the same direction as the direction of progression of the puncture tool.
  • they are introduced slightly beyond the collar, inside the chamber of the manifold, to ensure brazing or welding of satisfactory quality between the tube and the collar.
  • the presence of the collar makes it possible to provide a larger surface for the brazing or the welding of the tube than a simple slot. This also avoids the risk of leakage.
  • exceeding a part of the tube in the exchanger chamber can cause a pressure drop in the circulation of the fluid.
  • this overshoot is all the more important for the end tubes of the row of tubes, conventionally around 10 mm, since the collector plate is often non-flat and generally curved in the center, and the tubes are generally of same length. This induced pressure reduction must then be compensated by an additional effort from the pump to ensure a uniform flow of the fluid throughout the circuit.
  • the patent FR-2 764 054 of the applicant describes a heat exchanger which comprises a collecting plate with "inverted collars".
  • the tubes are inserted into the collecting plate on the side of the collars, that is to say in the direction opposite to the direction of formation by puncturing the holes.
  • "reverse collars" have drawbacks.
  • the collars being oriented towards the outside of the manifold, the insertion of the tubes into the collector plate is more difficult due to a smaller opening and the absence of guidance of the tubes to enter the collars.
  • the tubes no longer protruding sufficiently into the chamber of the manifold, the internal surface of the manifold plate has no relief that can carry the seal. Other means are then necessary to carry the seal.
  • the invention particularly aims to provide an improved heat exchanger in pressure drop which overcomes at least one of these drawbacks.
  • the subject of the invention is a heat exchanger according to claim 1.
  • all the tubes are of the same length.
  • the insertion of the tubes into the manifold plate is also simplified, since it is not necessary to identify and distribute a tube according to its position on the collector plate.
  • the insertion of tubes of the same length in the collector plate of the invention makes it possible to reduce the pressure drop around the extremal tubes, in particular for plates comprising a non-zero curvature on a longitudinal section. Indeed, the non-extreme collars being oriented towards the outside of the manifold, it is not necessary to introduce the corresponding tubes until they protrude inside the chamber of the manifold.
  • the tubes are of reduced length.
  • the tubes being the same length, the length of the part of an end tube which protrudes inside the chamber is then also reduced.
  • each of the tubes inserted in the end collars protrudes from the internal face of the collector plate exceeding a length less than or equal to 3 mm from the collar which receives it.
  • the opening of the end collars cannot be defined on a single plane, for example when it is concave, the length of the projecting part of the tube is evaluated from the highest point of the 'opening. This length is reduced by more than a third compared to that of a tube of a conventional collector plate. Significant consequences on the pressure drop are observed.
  • the invention also relates to a heat exchanger comprising a peripheral seal carried by the end collars of the row of collets.
  • the figures 1 to 4 represent a collecting plate 10, of generally rectangular shape, having an internal face 12 and an external face 14 of a heat exchanger comprising several collars 16, 16a around the holes 17.
  • the collars are arranged in a row for each to receive a tube 18.
  • the two end collars 16a of the row of collars protrude from the internal face 12 of the collector plate 10, while at least one other of the collars 16 protrudes from the external face 14 of the collector plate 10.
  • all the collars 16 project from the face external, with the exception of the end collars 16a.
  • the collecting plate 10 comprises a peripheral groove 20 intended to receive a seal 22 for sealing with a cover.
  • the groove 20 is deep enough to accommodate the seal 22 and ensure its stability.
  • the collector plate 10 is curved in the longitudinal direction 28. On a longitudinal section, such as for example that of the figure 3 , it has a generally rounded shape in the center and concave at the ends so that in the center the portion between two adjacent collars 16 is offset by a distance of the order of the thickness of the material at these portions (thickness determined) relative to an equivalent portion located between a collar 16 and an end collar 16a.
  • This distance, or amplitude of curvature can, in embodiments not shown, be different, less or greater but less than the distance corresponding to the pitch of tubes.
  • the collector plate may be generally flat in the direction 30.
  • the presence of a curvature in one or more directions makes it possible to reinforce the mechanical resistance of the collector plate and to facilitate the formation of collars.
  • the plate In the longitudinal direction 28, the plate has alternating solid portions and collars 16 so that in transverse section it has undulations ( fig.3, fig.4 ). These undulations have a pitch which corresponds to the pitch between two neighboring collars 16 or between a collar 16 and an end collar 16a. This pitch is constant and is between 5.5 mm and 10 mm, preferably between 6 mm and 8 mm.
  • Each of the tubes 18 inserted in a collar 16, 16a of the collector plate is substantially the same length as the other tubes inserted. Due to the curvature of the plate 10 in the direction 28 and the fact that the collars 16 protrude from the external face 14, the extremal tubes project less than the internal face 12. Each of them protrudes from the internal face 12 exceeding a length less than or equal to 3 mm from the collar 16a which receives it. As the mouth 40 of the collars 16a is not flat, the protrusion is measured from the highest point at the center of the opening of the collar.
  • the collector plate comprises at least one zone the thickness of which is reduced, preferably the thickness is reduced to half the initial thickness of the plate. This zone includes the location of the puncture of one or more collars 16, 16a and is therefore situated around the latter.
  • the assembly of the collecting plate 10 and of the row of tubes 18 is then covered with a cover to form a closed chamber of a collecting box, the sealing of which is ensured by the seal 22.
  • the collecting box is then mounted in a heat exchanger supplied by one or more fluids.

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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (9)

  1. Wärmetauscher, der eine Anordnung aus einer Endplatte und Rohren, die jeweils in einen Kragen der Endplatte eingeführt sind, umfasst, wobei die Endplatte (10) eine Innenseite (12) und eine Außenseite (14) hat, wobei der Wärmetauscher mindestens drei Krägen (16, 16a) beinhaltet, die in einer Reihe angeordnet sind, um jeweils ein Rohr (18) aufzunehmen, dadurch gekennzeichnet, dass die beiden Endkrägen (16a) der Reihe von Krägen von der Innenseite (12) der Endplatte (10) abstehen, während mindestens ein weiterer der Krägen (16) von der Außenseite (14) der Endplatte (10) absteht, und dass jedes der in die Endkrägen eingeführten Rohre von der Innenseite der Endplatte absteht und dabei den es aufnehmenden Kragen um eine Länge von 3 mm oder weniger überragt.
  2. Wärmetauscher nach Anspruch 1, wobei die Endplatte (10) eine umlaufende Rille (20) umfasst, die dazu bestimmt ist, eine Dichtung (22) aufzunehmen, um die Dichtigkeit mit einem Deckel zu gewährleisten.
  3. Wärmetauscher nach einem der vorhergehenden Ansprüche, bei dem die Platte eine bestimmte Dicke aufweist, mit Ausnahme der Krägen (16, 16a), die in Bezug auf den Rest der Endplatte eine verminderte Dicke aufweisen.
  4. Wärmetauscher nach einem der vorhergehenden Ansprüche, der eine Krümmung ungleich null in Richtung (28) einer Länge der Endplatte (10) umfasst.
  5. Wärmetauscher nach Anspruch 4, bei dem, wenn die Krägen regelmäßig entlang der Richtung (28) verteilt sind, so dass sie ein Rohrrastermaß bilden, die maximale Amplitude zwischen einem Kragen (16) und einem anderen Kragen (16), der an einen Endkragen (16a) angrenzt, kleiner als das Rohrrastermaß ist.
  6. Wärmetauscher nach Anspruch 4 in Kombination mit Anspruch 3, bei dem die Amplitude in der Größenordnung der bestimmten Dicke liegt.
  7. Wärmetauscher nach einem der vorhergehenden Ansprüche, bei dem die Endplatte (10) eine Krümmung ungleich null in Richtung einer Breite der Endplatte umfasst.
  8. Wärmetauscher nach einem der vorhergehenden Ansprüche, bei dem das Rastermaß zwischen zwei benachbarten Krägen konstant ist und zwischen 5,5 mm und 10 mm, bevorzugt zwischen 6 mm und 8 mm beträgt.
  9. Wärmetauscher nach einem der vorhergehenden Ansprüche, der eine umlaufende Dichtung umfasst, die von den Endkrägen der Reihe von Krägen getragen wird.
EP16723763.5A 2015-05-22 2016-05-20 Wärmeaustauscher, insbesondere für kraftfahrzeug Active EP3298338B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1554659A FR3036469B1 (fr) 2015-05-22 2015-05-22 Plaque collectrice pour echangeur de chaleur, notamment pour vehicule automobile
PCT/EP2016/061371 WO2016188882A1 (fr) 2015-05-22 2016-05-20 Plaque collectrice pour échangeur de chaleur, notamment pour véhicule automobile

Publications (2)

Publication Number Publication Date
EP3298338A1 EP3298338A1 (de) 2018-03-28
EP3298338B1 true EP3298338B1 (de) 2020-06-10

Family

ID=54783694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16723763.5A Active EP3298338B1 (de) 2015-05-22 2016-05-20 Wärmeaustauscher, insbesondere für kraftfahrzeug

Country Status (7)

Country Link
US (1) US10465997B2 (de)
EP (1) EP3298338B1 (de)
JP (1) JP2018515737A (de)
KR (1) KR20180008794A (de)
CN (1) CN107771269A (de)
FR (1) FR3036469B1 (de)
WO (1) WO2016188882A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3054653B1 (fr) * 2016-07-29 2018-07-27 Valeo Systemes Thermiques Plaque collectrice, boite collectrice et echangeur thermique correspondants
US11029101B2 (en) * 2019-02-11 2021-06-08 Hanon Systems Reverse header design for thermal cycle
KR20240036850A (ko) * 2022-09-14 2024-03-21 한온시스템 주식회사 열교환기

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365476C2 (de) * 1973-10-25 1983-01-05 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Wärmetauscher
FR2570481B1 (fr) * 1984-09-14 1988-09-09 Valeo Collecteur pour echangeur de chaleur, et echangeur de chaleur comprenant ce collecteur
DE4305945A1 (de) * 1993-02-26 1994-09-01 Behr Gmbh & Co Wärmetauscher, insbesondere für Kraftfahrzeuge
FR2764054B1 (fr) 1997-05-28 1999-08-06 Valeo Thermique Moteur Sa Echangeur de chaleur, en particulier refroidisseur d'air de suralimentation pour vehicule automobile, et procede de fabrication
JPH1183380A (ja) * 1997-09-09 1999-03-26 Zexel Corp 熱交換器のヘッダタンク
JP2004219044A (ja) 2002-12-26 2004-08-05 Denso Corp 熱交換器およびコアプレートの製造方法
DE10343239B4 (de) * 2003-09-17 2021-09-09 Mahle International Gmbh Wärmeübertrager
JP2006189206A (ja) * 2005-01-06 2006-07-20 Denso Corp 熱交換器
US7413006B2 (en) * 2006-04-06 2008-08-19 Modine Manufacturing Company Header plate for use in a heat exchanger
DE102007028792A1 (de) * 2006-06-29 2008-01-31 Denso Corp., Kariya Wärmeaustauscher
US9470461B2 (en) * 2007-11-01 2016-10-18 Modine Manufacturing Company Heat exchanger with a tank reinforcement member
FR2938052B1 (fr) * 2008-11-06 2013-04-26 Valeo Systemes Thermiques Branche Thermique Moteur Plaques collectrices a gorge pour boites collectrices d'echangeur de chaleur
CN101509732A (zh) * 2009-03-12 2009-08-19 华南理工大学 一种流量均匀分配的微通道蒸发器
FR2958385B1 (fr) * 2010-03-31 2013-01-18 Valeo Systemes Thermiques Echangeur de chaleur a performances accrues
KR20120018607A (ko) * 2010-08-23 2012-03-05 주식회사 경동나비엔 열교환기의 결합구조
FR2977932A1 (fr) * 2011-07-12 2013-01-18 Valeo Systemes Thermiques Boite collectrice, echangeur thermique et procede d'assemblage correspondant
DE102011085479A1 (de) * 2011-10-28 2013-05-02 Behr Gmbh & Co. Kg Wärmeübertrager

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2016188882A1 (fr) 2016-12-01
EP3298338A1 (de) 2018-03-28
US20180283806A1 (en) 2018-10-04
FR3036469B1 (fr) 2017-06-09
CN107771269A (zh) 2018-03-06
KR20180008794A (ko) 2018-01-24
US10465997B2 (en) 2019-11-05
FR3036469A1 (fr) 2016-11-25
JP2018515737A (ja) 2018-06-14

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