EP3252421B1 - Wärmetauscheranordnung - Google Patents

Wärmetauscheranordnung Download PDF

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Publication number
EP3252421B1
EP3252421B1 EP16172127.9A EP16172127A EP3252421B1 EP 3252421 B1 EP3252421 B1 EP 3252421B1 EP 16172127 A EP16172127 A EP 16172127A EP 3252421 B1 EP3252421 B1 EP 3252421B1
Authority
EP
European Patent Office
Prior art keywords
cover
slots
flat tubes
header
heat exchanger
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
EP16172127.9A
Other languages
English (en)
French (fr)
Other versions
EP3252421A1 (de
Inventor
Boleslaw Kurowski
Dariusz BUREK
Pawel TYRALA
Krzysztof KSIEZARCZYK
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
Original Assignee
Valeo Systemes Thermiques SAS
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Publication date
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Priority to EP16172127.9A priority Critical patent/EP3252421B1/de
Publication of EP3252421A1 publication Critical patent/EP3252421A1/de
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Publication of EP3252421B1 publication Critical patent/EP3252421B1/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
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • F28F2270/02—Thermal insulation; Thermal decoupling by using blind conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/04—Means for preventing wrong assembling of parts

Definitions

  • a heat exchanger comprising flat tubes arranged in parallel one above the other, between which heat-dissipating fins are extended, is known.
  • the ends of the flat tubes are tightly joined to manifolds extending perpendicular to the flat tubes.
  • the manifolds consist of two components: a cover and a header applied to and bent over the cover. Both those elements are provided with a plurality of corresponding slots into which ends of said flat tubes of the heat exchanger assembly are inserted.
  • the cover is provided with at least one longitudinal channel defined therein, which, in combination with channels inside the flat tubes, forms a closed circuit for a flow of a cooling medium.
  • the flat tubes between which the fins extend are introduced into the slots of both manifolds.
  • the plugs are placed at each end of the cover.
  • the header extends beyond the ends of the cover and the plugs are arranged inside of the header and immobilized by a total or point deformation of the walls of the header. Then, the brazing of the elements is carried out for permanent and tight connection of all elements.
  • the present invention aims to ensure stabilization of the position of the whole assembly before and during soldering, thereby eliminating the above-mentioned possibility of changing the position of the manifold in relation to the flat tubes and preventing the risk of leakage occurring between the flat tubes and the manifolds during joining these elements in the brazing process.
  • the heat exchanger assembly comprises additional extreme flat tubes extending parallel to the flat tubes between the extreme openings of the opposed manifolds, wherein the ends of said extreme flat tubes pass through the extreme slots of the cover and are at least in part bent towards the ends of the housings of the manifolds.
  • the ends of extreme flat tubes can be cut parallel to the longitudinal axes of the extreme flat tubes forming two side portions and at least one central portion wherein said at least one central portion and the side portions are bent toward the end of the corresponding cover.
  • the fins can extend between the extreme flat tubes and their adjacent flat tubes.
  • Both said header, said cover, as well as the flat tubes and the fins are made of aluminium and/or its alloys and are connected together by means of brazing.
  • the extreme flat tubes may be connected to the header by means of brazing.
  • At least one manifold can be closed at both its ends by a plug, wherein the bent end of the extreme flat tube presses the plug against the cover of the manifold.
  • Said plug may be made of aluminium and/or its alloys and may be connected to said header and said cover by means of brazing.
  • the size of said slots of said cover is at least equal or greater than the size of said slots of said header.
  • Said header can be applied on said cover in a such manner that one surface of said cover is exposed, wherein said surface comprises at least one port which is in fluid communication to said at least one longitudinal channel, for connection to an external circuit of the cooling medium.
  • An advantage of the invention is that it eliminates in a simple way the previously described problems of the prior art by using the existing components used in the construction of the heat exchanger assembly, and thus avoiding the additional costs related to the development and production of new elements.
  • the heat exchanger assembly 19, shown in exploded view in fig. 1 comprises three manifolds 1, two of which are aligned with each other and are, respectively, an inlet manifold for introducing a cooling medium through a corresponding opening 13 and an outlet manifold for discharging the cooling medium from the system through the respective opening 13, while the intermediate manifold is located opposite of said inlet and outlet manifold for returning the cooling medium from the input manifold to the output manifold.
  • one manifold 1 on each side of the assembly is used, each of which has an opening/port 13, wherein one of the manifolds is an inlet manifold and the other is an outlet manifold.
  • one manifold 1 on each side of the assembly wherein one manifold does not have openings/ports 13 and the other has two openings/ports 13 for supplying and discharging a cooling medium.
  • Each manifold 1 includes a header 2 and a cover 4.
  • the header 2 is manufactured from the plate, preferably of aluminium and/or its alloys, of a thickness of 0.8 mm to 2 mm, preferably 1 mm, by means of the stamping process and bent in such manner that it substantially replicates the external shape of the cover 4.
  • the cover 2 made of aluminium and/or its alloys may be plated on its one or both sides and has a plurality slots 3 arranged in a single row, in which the aluminium flat tubes 17 are introduced during assembling of the heat exchanger 19.
  • the slots 3 are precisely made slots, so that the ends of the flat tubes 17 are tightly received in the slots 3.
  • the cover 4 is the uniform element having a closed hollow profile made by means of an extrusion process having thick and massive walls ensuring resistance to high working pressure.
  • said cover comprises in its interior two separate longitudinal channels 5 for a flow of a cooling medium, but it should be noted that the cover may comprise one or more than two longitudinal channels, depending on the intended use of the heat exchanger 19.
  • the channels 5 are separated from each other by a reinforcing arch 7 in order to strengthen the structure of the cover 4 and the entire manifold 1.
  • the cover 4 has also a plurality of slots 10 at positions corresponding to the positions of the slots 3 in the header 2, wherein the slots 10 need not be made with such precise dimensions as the slots 3 of the header 2 that is their dimensions did not have to be exactly matched to the dimensions of the flat tubes 17.
  • the slots 10 will have a size larger than or at least the same size as the flat tubes 17 have and thus also the size of the slots 3. This results in that the flat tubes 17 are received loosely into slots 10 and tightly into slots 3.
  • the slots 10 can be made by a process using a saw milling, which process does not have to be precise, which causes that the cover 4 made in that way is simple and cheaper to manufacture.
  • the slots 10 are further in fluid communication to the channels 5 of the cover 4.
  • the cover 4 is also preferably made of aluminium and/or its alloys.
  • the header 2 is applied and bent over the cover 4, in particular over its corners, so that a larger portion of one of the outer surfaces of the cover 4, preferably the exposed surface 12 opposite to the surface on which the slots 10 are made, remains preferably uncovered by the header 2.
  • the header 2 does not have to protect the almost entire or entire surface of the cover 4. It is sufficient if the header 2 will cover at least a surface of the cover 4 in which the slots 10 are arranged.
  • the header 2 projects longitudinally beyond the cover 4, namely beyond the ends 14 of the cover 4, so as to form a seat 15 for the baffle/plug 16, preferably of aluminium and/or its alloys, for sealing the ends 14 of the cover 4 and the whole manifold 1.
  • the header 2 and the cover 4 are joined together and sealed to each other, as well as with respect to the plug 16, by brazing in a brazing furnace. This causes sealing all contact edges between these elements.
  • the manifold 1 assembled in this way has a substantially rectangular cross-section.
  • additional extreme slots 3 are formed on the extreme lengths of the headers 2, which are arranged at borders of the heat exchanger assembly 19 and which extend beyond the ends of the covers 4 and plugs 16 provided thereon, as shown in figures 1 and 2 . Furthermore, the additional two stiffening extreme flat tubes 17a are provided, the ends of which are inserted into respective said extreme slots 3a of the manifolds 1 and then bent towards the cover 4 of the respective manifold 1 by applying a bending force F over the entire width of the tube, as shown in figures 4 and 5 .
  • extreme flat tubes 17a are not part of the cooling medium circuit, since their ends are above the plugs 16 closing the channels 5 of the manifolds 1. However, due to the fact that the fins 18 extend between the extreme flat tubes 17a and their adjacent flat tubes 17, said extreme flat tubes 17a are involved in the heat exchange process.
  • the extreme flat tubes 17a may be bent to such an extent that they press on the plug 16 pressing it against the cover 4, so that the better protection against leakage of the connection between the plug 16 and the cover 4 is ensured, as shown in fig. 5 .
  • pressure of the plugs 16 by means of the ends of the extreme flat tubes 17a eliminates the necessity to deform the walls of the header in order to hold plugs 16 in place.
  • the extreme flat tubes 17a may also be joined to the slots 3a of the headers 2 in the brazing process of the remaining elements of the heat exchanger.

Landscapes

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

Claims (8)

  1. Wärmetauscheranordnung, Folgendes umfassend:
    mindestens zwei Verteiler (1), wobei jeder eine längliche Abdeckung (4) umfasst, die mindestens einen länglichen Kanal (5) darin definiert, und wobei sich mehrere Schlitze (10) auf einer Fläche der Abdeckung (4) befinden, wobei die Schlitze (10) mit dem mindestens einen Kanal (5) in Fluidverbindung sind und die Abdeckung (4) an beiden Enden geschlossen ist; und
    ein Kopfteil (2), das auf der Abdeckung (4) angebracht ist und sich über die geschlossenen Enden der Abdeckung (4) hinaus erstreckt, wobei das Kopfteil (2) mehrere Schlitze (3) an Positionen aufweist, die den Positionen der Schlitze (10) der Abdeckung (4) entsprechen, und wobei das Kopfteil (2) ferner mit der Abdeckung (4) fest verbunden und dagegen abgedichtet ist;
    Flachrohre (17), die sich zwischen den Verteilern (1) erstrecken, um ein Kühlmedium zu leiten, wobei die Enden jedes Flachrohrs (17) fest in den entsprechenden Schlitzen (3) der Kopfteile (2) der Verteiler befestigt sind, Finnen (18), die sich zwischen angrenzenden Flachrohren (17) erstrecken,
    dadurch gekennzeichnet, dass:
    in den Teilen des Kopfteils (2), die sich über die geschlossenen Enden der Abdeckung (4) hinaus erstrecken, zusätzliche äußerste Schlitze (3a) ausgebildet sind, während die Wärmetauscheranordnung zusätzliche äußerste Flachrohre (17a) umfasst, die sich parallel zu den Flachrohren (17) zwischen den äußersten Öffnungen (3a) der gegenüberliegenden Verteiler (1) erstrecken, wobei die Enden der äußersten Flachrohre (17a) durch die äußersten Schlitze (3a) des Kopfteils (2) verlaufen und zumindest teilweise in Richtung der Enden der jeweiligen Abdeckung (4) gekrümmt sind.
  2. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Enden der äußersten Flachrohre (17a) parallel zu den Längsachsen der äußersten Flachrohre (17a) geschnitten sind, wodurch zwei Seitenabschnitte (21) und mindestens ein Mittelabschnitt (22) ausgebildet werden, wobei der Mittelabschnitt (22) und die Seitenabschnitte (21) in Richtung des Endes der entsprechenden Abdeckung (4) gekrümmt sind.
  3. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass sich die Finnen (18) zwischen den äußersten Flachrohren (17a) und den entsprechenden angrenzenden Flachrohren (17) erstrecken.
  4. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Kopfteil (2), die Abdeckung (4), die Flachrohre (17) und die Finnen (18) aus Aluminium und/oder Aluminiumlegierungen gefertigt sind und miteinander verlötet sind.
  5. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass die äußersten Flachrohre (17a) mit dem Kopfteil (2) verlötet sind.
  6. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass mindestens ein Verteiler (1) an beiden Enden mittels eines Stopfens (16) verschlossen ist, wobei das gekrümmte Ende des äußersten Flachrohrs (17a) den Stopfen gegen die Abdeckung (4) des Verteilers (1) drückt.
  7. Wärmetauscheranordnung nach Anspruch 6, dadurch gekennzeichnet, dass der Stopfen (16) aus Aluminium oder einer Aluminiumlegierung gefertigt ist und mit dem Kopfteil (2) und der Abdeckung (4) verlötet ist.
  8. Wärmetauscheranordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Schlitze (10) der Abdeckung (4) zumindest gleichgroß oder größer als die Schlitze (3) des Kopfteils (2) sind.
EP16172127.9A 2016-05-31 2016-05-31 Wärmetauscheranordnung Active EP3252421B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16172127.9A EP3252421B1 (de) 2016-05-31 2016-05-31 Wärmetauscheranordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16172127.9A EP3252421B1 (de) 2016-05-31 2016-05-31 Wärmetauscheranordnung

Publications (2)

Publication Number Publication Date
EP3252421A1 EP3252421A1 (de) 2017-12-06
EP3252421B1 true EP3252421B1 (de) 2019-05-08

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ID=56108518

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Application Number Title Priority Date Filing Date
EP16172127.9A Active EP3252421B1 (de) 2016-05-31 2016-05-31 Wärmetauscheranordnung

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EP (1) EP3252421B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11713931B2 (en) * 2019-05-02 2023-08-01 Carrier Corporation Multichannel evaporator distributor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2947330B1 (fr) * 2009-06-25 2014-01-03 Valeo Systemes Thermiques Echangeur de chaleur comprenant un faisceau de tubes avec un tube inactif
EP2960609B1 (de) * 2014-06-26 2022-10-05 Valeo Autosystemy SP. Z.O.O. Verteiler, insbesondere zur verwendung in einem kühler eines kühlsystems

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3252421A1 (de) 2017-12-06

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