EP2375208B1 - Verbesserter Wärmetauscher - Google Patents

Verbesserter Wärmetauscher Download PDF

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Publication number
EP2375208B1
EP2375208B1 EP10461512A EP10461512A EP2375208B1 EP 2375208 B1 EP2375208 B1 EP 2375208B1 EP 10461512 A EP10461512 A EP 10461512A EP 10461512 A EP10461512 A EP 10461512A EP 2375208 B1 EP2375208 B1 EP 2375208B1
Authority
EP
European Patent Office
Prior art keywords
tubes
heat exchanger
tank
exchanger according
wall thickness
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
EP10461512A
Other languages
English (en)
French (fr)
Other versions
EP2375208A1 (de
Inventor
Janusz Rod
Sebastien Riviere
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 Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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 Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP10461512A priority Critical patent/EP2375208B1/de
Priority to PL10461512T priority patent/PL2375208T3/pl
Priority to US13/076,770 priority patent/US20120000634A1/en
Priority to CN201110079607.XA priority patent/CN102207357B/zh
Publication of EP2375208A1 publication Critical patent/EP2375208A1/de
Application granted granted Critical
Publication of EP2375208B1 publication Critical patent/EP2375208B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/08—Assemblies of conduits having different features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • 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

Definitions

  • the invention concerns heat exchangers, and particularly heat exchangers for the automobile industry.
  • heat exchangers for automotive vehicles comprise a beam of tubes for circulating a heat exchange fluid, between two boxes also called tanks or collectors.
  • the challenge in the design of heat exchangers is based on making the right trade-offs to ensure the best perfonnance/packaging/endurance ratio.
  • This type of radiator has many packaging advantages, yet their design is challenging, because they are subject to high stress in the region of separation between the high temperature region and the low temperature region.
  • a heat exchanger is known e.g. from US 6 394 176 B1 , which discloses the preamble of claim 1.
  • the invention improves this situation.
  • the invention proposes a heat exchanger for an automotive vehicle, comprising a tank and a beam of tubes, received at their extremities in openings of said tank where said tubes are linked to said tank through tube to tank junctions, some of said tube to tank junctions suffering thermal stress characterized in that at least some of the tubes involved in said tube to tank junctions suffering thermal stress have a higher mechanical resistance than the other tubes.
  • the mechanical resistance of the heat exchanger is thus enhanced in the areas suffering thermal stress by the tubes themselves. And the risk of failure due to thermal stress is lowered without additional parts or complicated designs. Pressure drop increase is also limited.
  • the tubes having higher mechanical resistance are extruded tubes and said other tubes are folded tubes.
  • FIG. 1 shows a schematic view of a heat exchanger 2 according to the invention.
  • Heat exchanger 2 is a single pass radiator for air cooling, which comprises tanks 4 and 5 and a beam 6 comprised of tubes 8.
  • tanks 4 and 5 each comprise a cover 10 received in a collector 12.
  • Tank 4 comprises a heat exchange fluid input 14, and tank 5 comprises a heat exchange fluid output 16.
  • the beam 6 is made of tubes 8 which are generally long, and parallel between them. Each tube 8 is received in a respective opening of tanks 4 and 6. Between tubes 8, fins are arranged, which enhance the heat exchange surface, and which are not represented here for simplicity.
  • the tubes 8 are generally made of aluminium are made by folding of a sheet unto itself, thus forming two channels, as can be seen on figure 3 .
  • Beam 6 comprises specific tubes in regions referenced by the number 18 located at the tank end.
  • the tubes 19 are made by an extrusion technique. This is particularly advantageous, because it allows designing tubes which have a different cross-section, as well as several ribs for strengthening, for instance two or more ribs, defining channels 40 for fluid circulation.
  • tube 19 comprises 3 ribs 20, each having a thickness of 0.35mm.
  • the number of ribs may be comprised between 2 and 12, and preferably is more than 7 and less than 12.
  • the thickness of ribs 20 may be chosen between 0.15mm and 3mm, and more preferably between 0.2mm and 1.5mm.
  • the tube 19 has a radial wall thickness T of 1.5mm and a transverse wall thickness t of 0.35mm.
  • the radial wall thickness T may be chosen between 0.225mm and 5mm, and more preferably between 0.75mm and 3mm.
  • the transverse wall thickness t may be chosen between 0.15mm and 3mm, and more preferably between 0.2mm and 1.5mm.
  • the radial wall thickness T is chosen to be at least bigger than 1.5 times that of the transverse wall thickness t.
  • the wall thickness ratio is chosen to be at least bigger than 2, and less than10.
  • the tube 19 resistance in terms of thermal shock elongation and compression is defined by its number of ribs, their thickness, the radial wall thickness T and the transverse wall thickness t.
  • the cross section of the radial walls of the extruded tubes may be circular as regards the external side thereof and circular and/or elliptic as regards the internal side thereof.
  • the channels 40 extending laterally may have a circular and/or elliptic side wall along the tube lateral sides.
  • regions 18 may be further strengthened by providing more than one tube 19, e.g. 2 to 4 tubes. Since the regions 18 are located at the extremity of the tanks, the use of the tubes 19 does not complicate the assembly of the heat exchanger.
  • FIGS. 4 and 5 show two other embodiments according to the invention.
  • tanks 4 and 6 are similar to those of figure 1 , but have additional elements.
  • tank 4 further comprises a baffle 22 and a further heat exchange fluid input and/or output 24, the heat exchanger thus being a two-pass heat exchanger.
  • tank 5 also further comprises a baffle 26 and a further heat exchange fluid input and/or output 28, the heat exchanger thus forming a double heat exchanger.
  • FIG. 6 shows a top view of a region 30, from the inside of tank. In the example shown in figure 6 , it is the region 30 of figure 4 or 5 which is represented, and baffle 22 is shown accordingly.
  • the baffle 22 is arranged between two openings of tank 4. Since the heat exchange fluid circulating in the heat exchanger will show significant difference in temperature, the tubes in the region 30, i.e. the tubes received in the opening neighboring baffle 22, are subject to a high level of stress, similarly to tubes 19 of regions 18.
  • region 30 comprises tubes 32 received in the openings which surround baffle 32. While the use of a baffle does complicate the assembly process, no other satisfactory solution exists to this day. Also, the use of tubes 32 allows better stress resistance, and ensures tightness of the heat exchanger, thus providing the best trade-off in terms of assembly and resistance.
  • the tubes 32 are similar to tubes 19, i.e they are built by an extrusion technique. Furthermore, they have identical dimensions in the example shown here, and they may be made with dimensions within the previously described ranges, including the number of ribs.
  • region 30 shown in figure 6 comprises only one tube 32 on each side of baffle 22, it may comprise more than one tube 32 on each side, e.g. 2 to 4. Further, there may be more tubes 32 on one side of baffle 22 than on the other side, e.g. 1 or 2 tubes 32 on one side, and 3 or 4 tubes 32 on the other sides.

Landscapes

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

Claims (10)

  1. Wärmetauscher für ein Kraftfahrzeug, umfassend einen Behälter (4, 5) und ein Bündel (6) aus Rohren (8, 19), die an ihren Enden in Öffnungen im Behälter (4, 5) aufgenommen sind, wobei die Rohre (8, 19) durch Rohr-Behälter-Verbindungsstellen mit dem Behälter (4, 5) verbunden sind, wobei einige der Rohr-Behälter-Verbindungsstellen Wärmespannungen ausgesetzt sind, dadurch gekennzeichnet, dass mindestens ein Teil der an den Wärmespannungen erfahrenden Rohr-Behälter-Verbindungsstellen beteiligten Rohre (19, 32) einen höheren mechanischen Widerstand aufweisen als die anderen Rohre (8), wobei die Rohre (19, 32) mit dem höheren mechanischen Widerstand extrudierte Rohre (19, 32) sind und die anderen Rohre gefalzte Rohre (8) sind.
  2. Wärmetauscher nach Anspruch 1, wobei die extrudierten Rohre (19, 32) ein Verhältnis von radialer Wanddicke (T) zu Querwanddicke (t) von größer gleich 1,5 haben.
  3. Wärmetauscher nach Anspruch 2, wobei die radiale Wanddicke (T) innerhalb des Bereichs von 0,225 mm bis 5 mm und vorzugsweise zwischen 0,75 mm und 3 mm ausgewählt ist.
  4. Wärmetauscher nach Anspruch 2, wobei die radiale Wanddicke (T) gleich 1,5 mm ist.
  5. Wärmetauscher nach einem der Ansprüche 1 bis 4, wobei die Querwanddicke (t) innerhalb des Bereichs von 0,15 mm bis 3 mm und vorzugsweise zwischen 0,2 mm und 1,5 mm liegt.
  6. Wärmetauscher nach einem der Ansprüche 1 bis 4, wobei die Querwanddicke (t) gleich 0,35 mm ist.
  7. Wärmetauscher nach einem der Ansprüche 1 bis 6, wobei die extrudierten Rohre (19, 32) eine gewählte Anzahl von Rippen (20) umfassen, die eine Dicke aufweisen, die innerhalb des Bereichs von 0,15 mm und 3 mm und vorzugsweise zwischen 0,2 mm und 1,5 mm gewählt ist, wobei die Anzahl von Rippen (20) zwischen 2 und 12 und vorzugsweise zwischen 7 und weniger als 12 gewählt ist.
  8. Wärmetauscher nach Anspruch 7, wobei die Anzahl von Rippen (20) 3 ist und wobei die Dicke jeder Rippe 0,35 mm ist.
  9. Wärmetauscher nach einem der Ansprüche 1 bis 8, wobei die extrudierten Rohre (19, 32) an beiden Enden des Bündels (6) positioniert sind.
  10. Wärmetauscher nach einem der Ansprüche 1 bis 9, der weiterhin mindestens eine Prallfläche (22, 26) umfasst, die zwischen zwei Öffnungen eines Tanks (4, 5) positioniert ist, wobei die in diesen beiden Öffnungen aufgenommenen Rohre extrudierte Rohre (32) sind.
EP10461512A 2010-03-31 2010-03-31 Verbesserter Wärmetauscher Active EP2375208B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10461512A EP2375208B1 (de) 2010-03-31 2010-03-31 Verbesserter Wärmetauscher
PL10461512T PL2375208T3 (pl) 2010-03-31 2010-03-31 Udoskonalony wymiennik ciepła
US13/076,770 US20120000634A1 (en) 2010-03-31 2011-03-31 Heat Exchanger
CN201110079607.XA CN102207357B (zh) 2010-03-31 2011-03-31 改进的热交换器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10461512A EP2375208B1 (de) 2010-03-31 2010-03-31 Verbesserter Wärmetauscher

Publications (2)

Publication Number Publication Date
EP2375208A1 EP2375208A1 (de) 2011-10-12
EP2375208B1 true EP2375208B1 (de) 2012-12-05

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Family Applications (1)

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EP10461512A Active EP2375208B1 (de) 2010-03-31 2010-03-31 Verbesserter Wärmetauscher

Country Status (4)

Country Link
US (1) US20120000634A1 (de)
EP (1) EP2375208B1 (de)
CN (1) CN102207357B (de)
PL (1) PL2375208T3 (de)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN105578906B (zh) * 2013-10-14 2019-05-21 菲利普莫里斯生产公司 包含改良条的加热式气溶胶生成制品
SE1450473A1 (sv) * 2014-04-22 2015-10-23 Titanx Engine Cooling Holding Ab Värmeväxlare innefattande en kärna av rör
US11365942B2 (en) 2018-03-16 2022-06-21 Hamilton Sundstrand Corporation Integral heat exchanger mounts
US20190285363A1 (en) * 2018-03-16 2019-09-19 Hamilton Sundstrand Corporation Integral heat exchanger core reinforcement
EP3809081A1 (de) * 2019-10-18 2021-04-21 Valeo Autosystemy SP. Z.O.O. Wärmetauscher

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Also Published As

Publication number Publication date
CN102207357B (zh) 2016-10-19
CN102207357A (zh) 2011-10-05
US20120000634A1 (en) 2012-01-05
PL2375208T3 (pl) 2013-05-31
EP2375208A1 (de) 2011-10-12

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