EP1684041A1 - Flachrohr mit Einsatz für Wärmetauscher - Google Patents

Flachrohr mit Einsatz für Wärmetauscher Download PDF

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Publication number
EP1684041A1
EP1684041A1 EP06001414A EP06001414A EP1684041A1 EP 1684041 A1 EP1684041 A1 EP 1684041A1 EP 06001414 A EP06001414 A EP 06001414A EP 06001414 A EP06001414 A EP 06001414A EP 1684041 A1 EP1684041 A1 EP 1684041A1
Authority
EP
European Patent Office
Prior art keywords
insert
tube
tube according
outer casing
depressions
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Withdrawn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
EP06001414A
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English (en)
French (fr)
Inventor
Ronan Cozic
Frédéric MESLIN
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
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 Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP1684041A1 publication Critical patent/EP1684041A1/de
Withdrawn legal-status Critical Current

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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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements

Definitions

  • the invention relates to a multi-channel flat tube for the circulation of a fluid in a heat exchanger, comprising an outer envelope of closed contour and an insert housed in said outer envelope and contiguous thereto in zones extending in the longitudinal direction of the tube to define said channels and to mechanically strengthen the tube.
  • stamping By this technique, it is difficult to obtain small wall thicknesses, for example 0.2 mm, which increases the material consumption and the weight of the tubes. In addition, the machine cycle is generally slow and produces a large amount of waste. This technique is not economical.
  • the extrusion technique which is widely used, also entails limits as to the thickness of the walls, those of the partitions between channels and of the outer casing must not be less than about 0.3 mm and about 0.2 mm respectively. This technique does not make it possible to obtain tubes coated with a brazing material for their connection by brazing with a collector plate. Since the cross-section of the extruded product is constant, it is not possible either to produce local deformations during extrusion, which can improve the heat exchange.
  • tubes are known in which the outer casing and the partitions between channels are obtained by folding the same band.
  • the folding leads to a thickness of the partitions between channels greater than what is necessary for the mechanical strength of the tube.
  • Tubes are also known in which the outer envelope is formed by folding a strip, and the channels are separated from each other by an insert introduced into the envelope. In some cases, localized depressions are provided on the opposite major faces of the outer casing. This can result in a loss of contact between the tube and fins adjacent thereto in the heat exchanger.
  • the object of the invention is to overcome the drawbacks of the known tubes, and to provide a multi-channel flat tube having optimum wall thicknesses and heat exchange properties, and which can be manufactured economically.
  • the invention aims in particular at a tube of the type defined in the introduction, and provides that the insert has localized depressions and that the outer casing is free of such depressions.
  • the channels are formed by the introduction of the insert into the outer casing.
  • the partitions thus provided between the channels are formed only once and only one thickness of the sheet.
  • pressing here means deformation of the sheet by displacement of material in the direction of the thickness of the sheet, substantially with retention of the thickness and without opening formation through the sheet.
  • the invention also relates to a method for manufacturing a multi-channel flat tube for the circulation of a fluid in a heat exchanger, in which process a first continuous sheet metal strip of suitable configuration is folded simultaneously to form an outer envelope. closed contour and a second continuous sheet metal strip of appropriate configuration to form an insert, the insert being introduced into the outer casing during the folding of the first band and before closing said contour, and the continuous structure is transversely cut thus obtained in sections each constituting a multi-channel flat tube as defined above.
  • the folding of the two strips and the introduction of the insert into the outer casing are made on the same forming train.
  • Figure 1 is a cross-sectional view of a six-channel flat tube according to the invention.
  • FIG. 2 is an exploded perspective view of the tube of FIG.
  • Figures 3 and 4 are views similar to Figures 1 and 2 respectively, showing a two-channel tube according to the invention.
  • Figures 5 and 6 are views similar to Figures 1 and 2 respectively, showing a four-channel tube according to the invention.
  • Figures 7 and 8 are views similar to Figures let 2 respectively, showing a three-channel tube according to the invention.
  • the flat tube shown in FIGS. 1 and 2 intended to be associated with other similar tubes and at least one collecting box for constituting a heat exchanger, comprises an outer casing 1 conventionally formed by folding in a train of forming a first continuous strip of aluminum sheet or aluminum alloy.
  • a marginal region 2 of the strip is curved substantially in a semicircle and connects to a region 3 remained flat and constituting one of the main faces of the envelope.
  • region 3 is connected to an intermediate region 4 curved substantially in a semicircle, itself followed by a region 5 remaining flat which forms the second main face of the envelope.
  • the second marginal zone 6 of the strip, adjacent to the region 5 is curved substantially in a semicircle and externally covers the region 2.
  • the thus folded strip forms a closed contour.
  • a second continuous band is folded together with the band 1, on the same forming train, to form an insert 7 which is introduced into the envelope before closing the contour thereof.
  • a first marginal region 8 of the second band is curved substantially in a semicircle and contiguous internally to the region 4 of the first band.
  • a range 9 extending from the face 5 to the face 3 substantially in a plane having a slight inclination, of the order of 10 °, with respect to the planes of said faces.
  • the range 9 is connected to a narrow region 10 contiguous to the face 3, which itself connects to a beach 11 extending from the face 3 to the face 5 substantially in a plane perpendicular to the plane of the beach 9 and by consequently, more strongly inclined, of the order of 80 °, relative to the planes of the faces 3 and 5.
  • the range 11 is followed by a range 12 similar to the range 10, contiguous to the face 5, then by a range 13 s extending from the face 5 to the face 7, parallel to the beach 9.
  • beaches 10, 11, 12 and 13 follow the beach 9, beaches 14, 15, 16 and 17 similar to those of FIG.
  • follow the range 13 delimits the track 17 and comes into contact with the region 2 of the first band.
  • the insert 7 delimits six channels inside the envelope 1, namely a first channel 21 delimited by the face 3, the region 8 and the range 9, a second channel 22 delimited by the areas 9, 10 and 11 and the face 5, a third channel 23 delimited by the tracks 11, 12 and 13 and the face 3, a fourth channel 24 delimited by the areas 13, 14 and 15 and the face 5, a fifth channel 25 delimited by the areas 15 , 16 and 17 and the face 3 and a sixth channel 26 delimited by the track 17, the region 2 and the face 5.
  • the partitions thus provided between the channels are formed only once and only one thickness of the sheet.
  • one and / or the other of the strips used may have, on one and / or both of their faces, a coating of brazing material which will melt during a passage in the oven of the heat exchanger is completed, so as to seal the fluid circuits and strengthen the mechanical connection and thermal conduction between the various components.
  • the brazing will ensure in particular a firm connection between the marginal regions 2 and 6 of the first band and between the insert and the envelope exterior and fluid tightness between the inside and outside of the tube and between the channels.
  • each of the ranges 9, 13 and 17 of the insert has two rows of localized depressions, the term "row” here denoting a set of depressions aligned in the longitudinal direction of the tube and spaced regularly from each other.
  • a row is formed of recesses 31 whose convexity is turned towards a channel adjacent to the face 3, that is to say the channel 21, 23 or 25 as the case may be, and the other row is formed of depressions whose convexity is turned to a channel adjacent to the face 5, namely the channel 22, 24 or 26.
  • the recesses 31 and 32 are arranged in staggered rows.
  • each depression 31, 32 has substantially the shape of a bowl of revolution, and more particularly of a spherical cap.
  • the depressions may have a generally square shape, as described and shown in WO 95/05571, an elongated shape or a triangular shape, as described and shown in EP 1060808, or other forms.
  • the tube of FIGS. 1 and 2 has a width of 27 mm and a thickness of 1.5 mm, the thickness of the first band and that of the second band being 0.1 mm and 0.2 mm respectively.
  • the materials of the envelope 1 and the insert 7 may be identical or different, and are chosen independently of one another according to the desired properties.
  • the tube shown in FIGS. 3 and 4 comprises an outer casing 1 identical to that of the tube of FIGS. 1 and 2, containing an insert 41 also obtained by folding. a continuous band.
  • the insert 41 comprises a flat surface 42 and contiguous to the face 5 over the entire width thereof, subject to depressions whose arrangement will be described later.
  • the range 42 is bounded by a free edge 43 of the strip which is substantially adjacent to the free edge of the first band delimiting the marginal region 2.
  • the range 42 is followed by a region 44 curved in a semicircle and contiguous to the region 4 of the envelope 1. In the region 44 follows a beach 45, flat and contiguous to the face 3 on a little less than half the width thereof, subject to depressions whose arrangement will be described later .
  • the insert 41 also comprises a U-shaped cross-sectional area 46, placed at the mid-width of the tube, the bottom of which bears against the beach 42 and whose branches extend across the thickness of the tube. one of them connecting to the beach 45 and the other connecting to a beach 47 similar to the beach 45 and contiguous to the face 3 on the remaining portion of the width thereof.
  • the insert 41 internally covers the outer casing 1 over its entire contour except for the side formed by the superposition of the marginal regions 2 and 6 of the first band.
  • the beach 46 divides the inside of the tube into two channels, namely a channel 51 further delimited by the beaches 42, 44 and 45, and a channel 52 delimited by the beaches 42 and 47 and the region 2.
  • Depressions similar to those described in connection with Figures 1 and 2 are formed in the flat areas 42, 45 and 47 of the insert, and turned exclusively towards the inside of the tube. More specifically, the range 42 has two rows of recesses 53 adjacent to the channel 51 and two rows of recesses 54 adjacent to the channel 52.
  • the range 45 has a row of depressions 55 close to the range 46, a row of depressions 56 similar to the region 44 and a row of intermediate depressions 57.
  • the beach 47 has a row of depressions 58 near the beach 46, a row of depressions 59 close to the free edge of the second band and the region 2 of the first band, and a row of intermediate sinks 60.
  • the sinking centers 53, 54, 55, 56, 58 and 59 are located in transverse planes such as the sectional plane of FIG. 3, while the centers of the recesses 57 and 60 are arranged in common transverse planes situated halfway between the preceding, leading to a staggered arrangement of the recesses of each of the tracks 45 and 47.
  • the partitions thus provided between the channels are formed only once and only one thickness of the sheet.
  • the tube shown in Figures 5 and 6 comprises an outer casing 1 similar to that of the previous embodiments, and an insert 61 obtained by folding a second continuous band.
  • the two marginal regions 62, 63 of the second band are curved in a semicircle and respectively contiguous to the marginal regions 2 and 4 of the first band.
  • the regions 62 and 63 are respectively connected, via narrow oblique regions 64 and 65, to two lands 66, 67 extending substantially, subject to localized depressions, the disposition of which will be described later, along a parallel plane. to faces 3 and 5 and located halfway therefrom.
  • the beaches 66 and 67 are interconnected by a median range 68 whose profile has substantially the shape of a sinusoidal arc extending over 1.5 periods, with a median apex 69 which bears on the face 5, framed by two vertices 70 which rest on the face 3.
  • the insert 61 divides the interior of the tube into four channels, namely a channel 71 between the range 66 and the face 3, a channel 72 between the range 66 and the face 5, a channel 73 included between 67 and the face 3 and a channel 74 between the range 67 and the face 5.
  • Each of the tracks 66 and 67 of the insert 61 has three rows of depressions, namely a median row whose depressions 75 are turned towards the face 5, framed by two rows of depressions 76 facing towards the face 3.
  • the partitions of the channels thus formed have only once and only one thickness of the sheet.
  • the tube shown in Figures 7 and 8 again comprises an outer shell 1 similar to that described above and an insert 81 obtained by folding a second continuous strip.
  • a marginal region 82 of the strip constituting the insert 81 is curved substantially in a semicircle and contiguous to the region 4 of the band constituting the envelope 1.
  • the region 82 is connected to a beach 83 substantially flat and contiguous to the face 3, subject to localized depressions whose layout will be described later.
  • the track 83 is followed by a track 84 which extends across the thickness of the tube, substantially in a plane at an angle of 90 ° to the planes of the faces 3 and 5.
  • the range 84 is itself followed by a beach 85 similar to the beach 83 and contiguous to the face 5.
  • a beach 86 similar to the beach 84 connects the beach 85 to a beach 87 similar to the beaches 83 and 85 and contiguous to the face 3.
  • the beach 87 extends to a free edge 88 which is substantially at the free edge delimiting the marginal region 6 of the first band.
  • the beaches 84 and 86 share the inside of the tube in three channels, namely a median channel 91 between these two beaches and adjacent to the beach 85, a side channel 92 adjacent to the beaches 83 and 84 and a side channel 93 adjacent to the beaches. beaches 86 and 87.
  • the partitions thus provided between the channels are formed only once and only one thickness of the sheet.
  • each of the ranges 83, 85 and 87 has two rows of localized depressions 94, the depressions of these two rows being offset relative to each other in the longitudinal direction, leading to a staggered arrangement.

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)
EP06001414A 2005-01-24 2006-01-24 Flachrohr mit Einsatz für Wärmetauscher Withdrawn EP1684041A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0500709A FR2881218B1 (fr) 2005-01-24 2005-01-24 Tube plat avec insert pour echangeur de chaleur

Publications (1)

Publication Number Publication Date
EP1684041A1 true EP1684041A1 (de) 2006-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06001414A Withdrawn EP1684041A1 (de) 2005-01-24 2006-01-24 Flachrohr mit Einsatz für Wärmetauscher

Country Status (2)

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EP (1) EP1684041A1 (de)
FR (1) FR2881218B1 (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029378A1 (de) * 2006-06-27 2008-01-03 Modine Manufacturing Co., Racine Flachrohr für Wärmetauscher und Herstellungsverfahren
DE102006035210A1 (de) * 2006-07-29 2008-01-31 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr und Herstellungsverfahren
US20110005738A1 (en) * 2006-11-22 2011-01-13 Modine Manufacturing Company Soldered flat tube for condensers and/or evaporators
US7921559B2 (en) 2006-01-19 2011-04-12 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8091621B2 (en) 2006-01-19 2012-01-10 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8191258B2 (en) 2006-01-19 2012-06-05 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8281489B2 (en) 2006-01-19 2012-10-09 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
FR2980739A1 (fr) * 2011-10-04 2013-04-05 Valeo Systemes Thermiques Tube de radiateur de refroidissement pour vehicule automobile et radiateur de refroidissement pour vehicule automobile comprenant un tel tube.
US8434227B2 (en) 2006-01-19 2013-05-07 Modine Manufacturing Company Method of forming heat exchanger tubes
US8438728B2 (en) 2006-01-19 2013-05-14 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8561451B2 (en) 2007-02-01 2013-10-22 Modine Manufacturing Company Tubes and method and apparatus for producing tubes
US8683690B2 (en) 2006-01-19 2014-04-01 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
FR2997486A1 (fr) * 2012-10-25 2014-05-02 Valeo Systemes Thermiques Tube d'echangeur de chaleur a moyen de perturbation plat
CN103776290A (zh) * 2013-12-31 2014-05-07 沁园集团股份有限公司 一种螺旋形管道和制作方法
US8726508B2 (en) 2006-01-19 2014-05-20 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US9038267B2 (en) 2010-06-10 2015-05-26 Modine Manufacturing Company Method of separating heat exchanger tubes and an apparatus for same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096272A (en) * 1935-07-15 1937-10-19 Young Radiator Co Turbulence means for radiator tubes
US2488615A (en) * 1942-11-11 1949-11-22 Modine Mfg Co Oil cooler tube
FR2619898A1 (fr) * 1987-09-02 1989-03-03 Sueddeutsche Kuehler Behr Echangeur de chaleur a tubes plats
US5491997A (en) * 1991-10-23 1996-02-20 Nippondenso Co., Ltd. Apparatus and method for forming a heat exchanger inner fin having cross-flow passages
JPH10153393A (ja) * 1996-11-22 1998-06-09 Calsonic Corp 熱交換器用扁平伝熱管
DE19819248C1 (de) * 1998-04-29 1999-04-29 Valeo Klimatech Gmbh & Co Kg Flachrohr eines Heizungswärmetauschers oder Kühlers eines Kraftfahrzeugs
EP1065466A2 (de) * 1999-07-01 2001-01-03 Ford Motor Company Flacher Wirbelerzeuger für ein Rohr und dessen Herstellung
EP1243884A2 (de) * 2001-03-22 2002-09-25 Delphi Technologies, Inc. Wärmetauscherrohr
WO2004005831A1 (ja) * 2002-07-09 2004-01-15 Zexel Valeo Climate Control Corporation 熱交換器用チューブ

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096272A (en) * 1935-07-15 1937-10-19 Young Radiator Co Turbulence means for radiator tubes
US2488615A (en) * 1942-11-11 1949-11-22 Modine Mfg Co Oil cooler tube
FR2619898A1 (fr) * 1987-09-02 1989-03-03 Sueddeutsche Kuehler Behr Echangeur de chaleur a tubes plats
US5491997A (en) * 1991-10-23 1996-02-20 Nippondenso Co., Ltd. Apparatus and method for forming a heat exchanger inner fin having cross-flow passages
JPH10153393A (ja) * 1996-11-22 1998-06-09 Calsonic Corp 熱交換器用扁平伝熱管
DE19819248C1 (de) * 1998-04-29 1999-04-29 Valeo Klimatech Gmbh & Co Kg Flachrohr eines Heizungswärmetauschers oder Kühlers eines Kraftfahrzeugs
EP1065466A2 (de) * 1999-07-01 2001-01-03 Ford Motor Company Flacher Wirbelerzeuger für ein Rohr und dessen Herstellung
EP1243884A2 (de) * 2001-03-22 2002-09-25 Delphi Technologies, Inc. Wärmetauscherrohr
WO2004005831A1 (ja) * 2002-07-09 2004-01-15 Zexel Valeo Climate Control Corporation 熱交換器用チューブ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438728B2 (en) 2006-01-19 2013-05-14 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8683690B2 (en) 2006-01-19 2014-04-01 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8434227B2 (en) 2006-01-19 2013-05-07 Modine Manufacturing Company Method of forming heat exchanger tubes
US7921559B2 (en) 2006-01-19 2011-04-12 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8091621B2 (en) 2006-01-19 2012-01-10 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8191258B2 (en) 2006-01-19 2012-06-05 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8281489B2 (en) 2006-01-19 2012-10-09 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
US8726508B2 (en) 2006-01-19 2014-05-20 Modine Manufacturing Company Flat tube, flat tube heat exchanger, and method of manufacturing same
DE102006029378B4 (de) * 2006-06-27 2014-02-13 Modine Manufacturing Co. Flachrohr für Wärmetauscher und Herstellungsverfahren
DE102006029378A1 (de) * 2006-06-27 2008-01-03 Modine Manufacturing Co., Racine Flachrohr für Wärmetauscher und Herstellungsverfahren
DE102006035210B4 (de) * 2006-07-29 2016-10-06 Modine Manufacturing Co. Flaches Wärmetauscherrohr und Herstellungsverfahren
DE102006035210A1 (de) * 2006-07-29 2008-01-31 Modine Manufacturing Co., Racine Flaches Wärmetauscherrohr und Herstellungsverfahren
US20110005738A1 (en) * 2006-11-22 2011-01-13 Modine Manufacturing Company Soldered flat tube for condensers and/or evaporators
US8561451B2 (en) 2007-02-01 2013-10-22 Modine Manufacturing Company Tubes and method and apparatus for producing tubes
US9038267B2 (en) 2010-06-10 2015-05-26 Modine Manufacturing Company Method of separating heat exchanger tubes and an apparatus for same
FR2980739A1 (fr) * 2011-10-04 2013-04-05 Valeo Systemes Thermiques Tube de radiateur de refroidissement pour vehicule automobile et radiateur de refroidissement pour vehicule automobile comprenant un tel tube.
WO2013050382A1 (fr) * 2011-10-04 2013-04-11 Valeo Systemes Thermiques Tube de radiateur de refroidissement pour vehicule automobile et radiateur de refroidissement pour vehicule automobile comprenant un tel tube
FR2997486A1 (fr) * 2012-10-25 2014-05-02 Valeo Systemes Thermiques Tube d'echangeur de chaleur a moyen de perturbation plat
CN103776290A (zh) * 2013-12-31 2014-05-07 沁园集团股份有限公司 一种螺旋形管道和制作方法
CN103776290B (zh) * 2013-12-31 2016-08-17 沁园集团股份有限公司 一种螺旋形管道和制作方法

Also Published As

Publication number Publication date
FR2881218B1 (fr) 2007-06-01
FR2881218A1 (fr) 2006-07-28

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