EP3009779B1 - Rohr des Gaskühlers für einen Kondensator - Google Patents

Rohr des Gaskühlers für einen Kondensator Download PDF

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Publication number
EP3009779B1
EP3009779B1 EP14461576.2A EP14461576A EP3009779B1 EP 3009779 B1 EP3009779 B1 EP 3009779B1 EP 14461576 A EP14461576 A EP 14461576A EP 3009779 B1 EP3009779 B1 EP 3009779B1
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European Patent Office
Prior art keywords
tube
cooling medium
channels
flow
gas cooler
Prior art date
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EP14461576.2A
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English (en)
French (fr)
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EP3009779A1 (de
Inventor
Dawid Szostek
Dominik Sporna
Grzegorz Romanski
Adam Bedek
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
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Valeo Autosystemy Sp zoo
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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
    • F28D1/04—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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers

Definitions

  • the present invention relates to a tube of the gas cooler for the condenser, in particular the tube of the gas cooler for the condenser, having a flattened shape, defined by two mutually parallel flat walls and two curved side walls positioned opposite to each other and connecting these flat walls.
  • the tube is elongated in the transverse direction X.
  • the tube comprises a plurality of identical channels for the flow of cooling medium arranged in parallel and in series next to each other in the transverse direction X of the tube 10, with spacing between them, having a circular cross-section.
  • the dimensions of the channel for the cooling medium were selected based on the simulation and the internal lumen was fixed in the range of 0.35 to 0.8 mm, and the ratio of the air flow opening (Pr) was selected in accordance with the following formula: 0.1429 x Td 2 + 0.1343 * Td + 0.139 ⁇ Pr ⁇ 0.1429 x Td 2 + 0.1343 x Td + 0.113 wherein Td is the dimension between the outer side of the tube and the upper side of the passage for the cooling medium in the direction of the stratification of the tubes.
  • the ratio of four times the cross-sectional area to the internal perimeter is set between 0.9 mm and 2.0 mm.
  • the obtained value of the ratio of the material cross-section i.e. the section of the pipe body to the free flow cross-section, i.e. to the total cross-sectional area of all the flow channels between is between 1.4 and 4.5.
  • the wall thickness of the tube was adopted in a range between about 0.2 mm and 0.6 mm, and in the individual cases, slightly more than 1 mm.
  • the object of the invention is to provide such a tube construction which would mainly ensure high resistance to high working pressure flowing through it, and would have sufficient resistance to corrosion and impact of stones and other objects.
  • bursting tests and corrosion tests during designing the tube performed tests consisting of striking the edge of the tube with grit to simulate the potential impact of stones during the use of the car.
  • this test it was confirmed the need to reinforce the wall of the tube in the region between the flow channel of the cooling medium located closest to the outer side wall of the tube and this wall.
  • the object of the invention is to provide such a pipe structure that would take into account a restriction which the process of pressing the tube with channels having a diameter less than ⁇ 0.35 mm is subjected to.
  • the tube of the cooler which is characterized in that the side walls of the tube, have a thickness which satisfies the following relationships: 1.25 ⁇ D ⁇ A ⁇ 1.68 ⁇ D 2.12 ⁇ B ⁇ A ⁇ 3.05 ⁇ B wherein:
  • the tube is manufactured in an extrusion process, and is preferably formed by folding.
  • a tube of the gas cooler for the condenser has a flattened shape, defined by two mutually parallel flat walls 13, 15 and two curved side walls 12, 14 positioned opposite and connecting these flat wall 13,15.
  • the tube 10 is elongated in the transverse direction X.
  • the tube 10 includes a plurality of identical channels 11 for the flow of cooling medium arranged in parallel and in series next to each other in the transverse direction X of the tube 10, with spacing between them.
  • the channels 11 for the flow of cooling medium have a circular shape of cross-section with a diameter D.
  • the channels 11 are spaced from the surface of flat walls 13, 15 of the tube by an amount B.
  • Transverse direction X is appointed by the straight line parallel to the flat walls 13,15 and crossing central points of the channels 11 circular cross-section.
  • the distance B is the distance between the surface of the flat walls 13,15, and the channels 11 for the flow of cooling medium, measured in the direction Y perpendicular to the direction X, along the diameter D of the channel 11.
  • the radii of curvature of the rounding of the side walls 12,14 are the fixed radii.
  • a part C of the tube, indicated in Fig. 1 is a part inserted into the manifold, therefore the pressure acting on the tube in this part as well as inside is compensated, and therefore the tube 10 can be locally thinned.
  • a part C of the tube called an "endforming" is provided to introduce the tube into the manifold. Size of the part C results from the construction of the manifold.
  • the tube 10 is designed according to the following description of the currently designed gas cooler with the depth of the core of 12 mm.
  • the tube 10 of the cooler is designed where the side walls 12, 14 have a thickness A, which satisfies the following relationships: 1.25 ⁇ D ⁇ A ⁇ 1.68 ⁇ D 2.12 ⁇ B ⁇ A ⁇ 3.05 ⁇ B wherein:
  • the dimensioning of the flat tube 10 taking into account in particular the area of strengthening selected in such a way that the flat tube 10 on one hand meets the requirements for burst pressure made to the coolers of the motor vehicles, on the other hand has a low weight and high efficiency of heat conversion.
  • Multi-channel flat tube made this way with a reinforced wall meets the requirements concerning required destruction pressure (so-called burst test).

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 (3)

  1. Rohr (10) für einen Gaskühler für einen Kondensator, mit einer abgeflachten Form, wobei ein Hauptteil entlang der Längsrichtung des Rohrs durch zwei zueinander parallele flache Wände (13, 15) definiert ist und sich zwei gekrümmte Seitenwände (12, 14) gegenüberliegen und diese flachen Wände (13, 15) verbinden, wobei das Rohr (10) in der Querrichtung (X) längserstreckt ist, wobei das Rohr (10) eine Vielzahl von parallel und in der Querrichtung (X) des Rohrs (10) nebeneinander in Reihe angeordneten, voneinander beabstandeten und einen kreisrunden Querschnitt aufweisenden identischen Kanälen (11) für den Strom eines Kühlmittels umfasst, dadurch gekennzeichnet, dass die Seitenwände (12, 14) des Rohrs (10) eine Dicke (A) aufweisen, die die folgenden Beziehungen erfüllt: 1,25 × D ≤ A ≤ 1,68 × D
    Figure imgb0007
     2,12 × B ≤ A ≤ 3,05 × B ,
    Figure imgb0008
     wobei:
    A - der entlang der Querrichtung (X) gemessene Abstand zwischen der Außenfläche der gekrümmten Seitenwände (12, 14) und den äußersten Kanälen (11) für den Strom des Kühlmittels des Rohrs (10) ist,
    D - der Durchmesser der Kanäle (11) für den Strom des Kühlmittels ist,
    B - der Abstand zwischen der Oberfläche der flachen Wände (13, 15) und den Kanälen (11) für den Strom des Kühlmittels ist, gemessen in einer rechtwinklig zu der Richtung (X) entlang dem Durchmesser (D) des Kanals (11) für den Strom des Kühlmittels verlaufenden Richtung (Y) .
  2. Rohr des Gaskühlers nach Anspruch 1, dadurch gekennzeichnet, dass es in einem Stranggießverfahren hergestellt wird.
  3. Rohr des Gaskühlers nach Anspruch 1, dadurch gekennzeichnet, dass es durch Biegen hergestellt wird.
EP14461576.2A 2014-10-15 2014-10-15 Rohr des Gaskühlers für einen Kondensator Active EP3009779B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14461576.2A EP3009779B1 (de) 2014-10-15 2014-10-15 Rohr des Gaskühlers für einen Kondensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14461576.2A EP3009779B1 (de) 2014-10-15 2014-10-15 Rohr des Gaskühlers für einen Kondensator

Publications (2)

Publication Number Publication Date
EP3009779A1 EP3009779A1 (de) 2016-04-20
EP3009779B1 true EP3009779B1 (de) 2019-05-15

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Family Applications (1)

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Country Status (1)

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EP (1) EP3009779B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017153152A1 (en) * 2016-03-07 2017-09-14 Asml Netherlands B.V. Multilayer reflector, method of manufacturing a multilayer reflector and lithographic apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR6101373U (pt) 1981-10-01 1981-12-22 Ucerpo S A Ideias Pesquisas E Gola-calha aplicada na borda superior externa dos tanques de combustivel para seu resfriamento
US4998580A (en) 1985-10-02 1991-03-12 Modine Manufacturing Company Condenser with small hydraulic diameter flow path
JP2001165532A (ja) 1999-12-09 2001-06-22 Denso Corp 冷媒凝縮器
JP3821113B2 (ja) * 2003-05-23 2006-09-13 株式会社デンソー 熱交換用チューブ
JP2011153814A (ja) * 2009-09-30 2011-08-11 Daikin Industries Ltd 熱交換用扁平管

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