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WO2006105823A1 - Tube plat a plusieurs canaux - Google Patents

Tube plat a plusieurs canaux Download PDF

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Publication number
WO2006105823A1
WO2006105823A1 PCT/EP2006/001176 EP2006001176W WO2006105823A1 WO 2006105823 A1 WO2006105823 A1 WO 2006105823A1 EP 2006001176 W EP2006001176 W EP 2006001176W WO 2006105823 A1 WO2006105823 A1 WO 2006105823A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat tube
cross
channel
flow channels
channel flat
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.)
Ceased
Application number
PCT/EP2006/001176
Other languages
German (de)
English (en)
Inventor
Gottfried DÜRR
Frederik GÖTZ
Boris Kerler
Michael Kranich
Karl-Heinz Staffa
Christoph Walter
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of WO2006105823A1 publication Critical patent/WO2006105823A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to multi-channel flat tubes for heat exchangers with a plurality of parallel flow channels adjacent one another in the tube transverse direction. Furthermore, the invention relates to a heat exchanger and a refrigerant circuit with such Mehrkanalflachrohren.
  • Heat exchangers in particular heat exchangers in which one of the media used is air flowing through, are usually manufactured as so-called flat tube heat exchangers for manufacturing and space reasons.
  • This concerns for example, coolant radiators for motor vehicles and evaporators and gas coolers / condensers for motor vehicle air conditioners.
  • Flachrohr Anlagenübertragern flows to be cooled or to be heated fluid (for example, a coolant or a refrigerant) through flattened tubes - hence the name flat raw rffleübertrager.
  • Meander-shaped corrugated ribs which usually have an additional surface structuring, are usually arranged between the flat tubes in order to improve the heat transfer. To stabilize the arrangement and to further improve the heat transfer properties, the individual components are soldered together after assembly.
  • multi-channel flat tubes are also faced with disadvantages. Because of their high material costs, multi-channel flat tubes are heavy, relatively expensive and have a relatively small free cross-sectional area in relation to their cross-sectional area. surface on. Due to the large wall thicknesses required in particular for R744 air conditioning systems, a reduction of the dimensions of multi-channel flat tubes often proves to be problematic. This has correspondingly large, heavy and expensive heat exchanger result. In particular, the dissipatable heat per weight unit and / or per unit volume of the resulting heat exchanger often turns out to be relatively low.
  • the invention has for its object to propose Mehrkanalflachrohre that eliminate the problems and disadvantages that are present in multi-channel flat tubes according to the prior art, or at least reduce. The same applies to such multi-channel flat tubes having heat exchanger or refrigerant circuits.
  • the invention has the object, with reduced material usage, reduced costs and / or reduced component dimensions, to allow an acceptable, preferably similarly good, in particular improved heat transfer performance over known devices.
  • reduced height flow channel cross-sectional geometry is understood in particular to mean cross-sectional geometries in which the width of the flow channel seen in the tube transverse direction of the multichannel flat tube has a larger dimension than the height of the flow channel seen in the tube cross-sectional height of the multichannel flat tube. In this case, any, in particular irregular and asymmetrical shapes can be used. Flow channels with a twofold flow channel cross-sectional geometry have proved to be advantageous.
  • a two-fold flow channel cross-sectional geometry is to be understood as cross-sectional geometries which change into themselves after a rotation of 180 °.
  • higher-order geometries are also conceivable in this connection (transition into the same shape after a rotation of, for example, 90 °, 60 °, 45 °, 30 ° or also after any angle of rotation).
  • a point symmetry is also to be considered in this context.
  • Such forms prove to be advantageous in terms of stability, the free cross-sectional area offered to the coolant flowing through and / or the achievable heat transfer performance of the resulting multi-channel flat tube and thus of the heat exchanger constructed therefrom.
  • Flow channels with a channel cross section in the form of a horizontal oval, a horizontal rectangle and / or a flattened n-corner have proved to be particularly advantageous.
  • the corners can of course also be rounded.
  • geometries with any combination of sheets with different radii and / or corners are conceivable.
  • flow channels with a cross-sectional width of 0.8 mm - 1.5 mm, preferably from 0.9 mm - 1, 4 mm, particularly preferably from 1, 0 mm - 1.3 mm, in particular 1.1 mm - 1, 2 mm, preferably from 1, 15 mm are provided.
  • flow channels have a cross-sectional height of 0.6 mm - 1, 1 mm, preferably from 0.7 mm - 1, 0 mm, particularly preferably from 0.8 mm - 0.9 mm, in particular from 0.85 mm proved to be advantageous.
  • the flow channels it proves to be favorable for the flow channels to have a ratio of cross-sectional width to cross-sectional height of 1.2-1.5, preferably 1.25.
  • the hydraulic diameter of the flow channels is preferably selected between 0.9 mm - 1.05 mm, preferably between 0.93 mm - 1.03 mm, particularly preferably between 0.95 mm - 1.0 mm, in particular of 0.97 mm ,
  • the hydraulic diameter is understood to mean the usual definition, in which the hydraulic diameter is four times the free cross-sectional area of a single flow channel divided by the circumference of the corresponding flow channel.
  • the wall thickness of the multi-channel flat tube is preferably set between 0.25 mm and 0.3 mm, preferably between 0.26 mm and 0.29 mm, particularly preferably between 0.27 mm and 0.28 mm, in particular with 0.27 mm.
  • the values mentioned here preferably relate to the thinnest points, since, for example, in the case of oval flow channels, the wall thickness changes along the contour.
  • a distance between the flow channels to each other of 1.58 mm - 1, 64 mm, preferably from 1, 59 mm - 1, 63 mm, more preferably from 1, 60 mm - 1, 62 mm, in particular of 1, 61 mm proved to be advantageous.
  • the above-mentioned design data can result in particularly advantageous multi-channel flat tubes, in particular with regard to a particularly advantageous combination of stability, low weight and / or high heat content. transfer performance.
  • other than the specified values can be used.
  • a further advantageous development of the invention results if the flow channels have at least in regions a surface-enlarging internal structuring. As a result, the heat transfer performance can be increased again.
  • a heat exchanger in particular a heat exchanger for an R744 refrigerant circuit is proposed which has at least one multi-channel flat tube as described above. Also advantageous is a refrigerant circuit with R744 (CO 2 , carbon dioxide) as the refrigerant, which has at least one multichannel flat tube as described above.
  • Figure 1 shows a first embodiment of a Mehrkanalflachrohrs in cross section
  • Figure 2 shows a second embodiment of a multi-channel flat tube in cross section
  • Figure 3 shows a third embodiment of a multi-channel flat tube in cross section
  • FIG. 4 shows a cross-sectional detail of a multi-channel flat tube according to a fourth exemplary embodiment.
  • Figure 1 shows a multi-channel flat tube 1 with a plurality of juxtaposed, mutually parallel flow channels 2 in cross-section.
  • the flow channels 2 have in the illustrated embodiment, an oval cross-section.
  • the multi-channel flat tube 1 itself is manufactured in a manner known per se from an aluminum material or an aluminum-containing metal alloy by means of an extrusion molding process.
  • the oval 2 lie flat, that is with its longitudinal axis a in the transverse direction L of the flat tube 1.
  • the smaller diameter b of the ovals 2 extends in the direction of the cross-sectional height h of the multi-channel flat tube 1.
  • the lying in the middle flow channels 2 each have a similar cross-section and are arranged at a distance T from one another (in each case, for example, flow channel center to flow channel center).
  • the wall thickness w between the top 6 and the flow channel 2 and the flow channel 2 and the bottom 7 is different.
  • FIG. 2 shows a further possible exemplary embodiment of a multichannel flat tube following the invention.
  • the multichannel flat tube 1 shown here has flow channels 4 with a rectangular channel cross section.
  • additional circular flow channels 3 are provided in the end regions 8, 9.
  • FIG. 3 shows a further possible exemplary embodiment of a multi-channel flat tube 1, in which the flow channels 5 have a hexagonal cross-sectional shape.
  • the hexagons have a relation to their height b greater width a, so are not regularly shaped.
  • the cross-section is designed such that its cross-sectional shape after turning by 180 ° in each case on its own (two-fold symmetry).
  • FIG. 4 also indicates how additional surface-enlarging structures 11 can be formed in the case of a multi-channel flat tube 1 with flow channels 2 of oval cross-section along the flow channel inner side 10, which is designed as a triangular-shaped ribbing in the embodiment illustrated in FIG.
  • flow channels 2 of oval cross-section along the flow channel inner side 10
  • FIG. 4 also indicates how additional surface-enlarging structures 11 can be formed in the case of a multi-channel flat tube 1 with flow channels 2 of oval cross-section along the flow channel inner side 10, which is designed as a triangular-shaped ribbing in the embodiment illustrated in FIG.
  • other forms are also conceivable here.

Landscapes

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

Abstract

L'invention concerne un tube plat (1) destiné à un échangeur de chaleur d'un dispositif de climatisation au R744, présentant une épaisseur (h) inférieure ou égale à 1,4 mm. L'objectif de l'invention est de créer un tube plat présentant une rigidité et une capacité de transfert thermique suffisantes. A cet effet, le tube plat, selon l'invention, présente des agencements de canaux d'écoulement et des dimensions appropriés.
PCT/EP2006/001176 2005-04-08 2006-02-10 Tube plat a plusieurs canaux Ceased WO2006105823A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005016540.0 2005-04-08
DE200510016540 DE102005016540A1 (de) 2005-04-08 2005-04-08 Mehrkanalflachrohr

Publications (1)

Publication Number Publication Date
WO2006105823A1 true WO2006105823A1 (fr) 2006-10-12

Family

ID=36220857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/001176 Ceased WO2006105823A1 (fr) 2005-04-08 2006-02-10 Tube plat a plusieurs canaux

Country Status (2)

Country Link
DE (1) DE102005016540A1 (fr)
WO (1) WO2006105823A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2485006A4 (fr) * 2009-09-30 2013-12-11 Daikin Ind Ltd Tube aplati pour échangeur de chaleur
WO2017158293A1 (fr) * 2016-03-18 2017-09-21 Valeo Systemes Thermiques Refroidisseur de gaz pour véhicule automobile

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053702B4 (de) * 2006-11-13 2019-04-04 Mahle International Gmbh Wärmetauscher, insbesondere Gaskühler
EP2134941B1 (fr) 2007-03-16 2017-11-08 MAHLE Behr GmbH & Co. KG Canal d'écoulement, échangeur de chaleur, système de recyclage des gaz d'échappement, système d'apport d'air de suralimentation et utilisation d'un échangeur de chaleur
DE102009031264A1 (de) 2008-07-17 2010-04-15 Behr Gmbh & Co. Kg Verfahren zur Auslegung einer Rohr-Rippen-Anordnung eines Wärmetauschers, Rohr-Rippenanordnung und Wärmetauscher
DE102014221168A1 (de) 2014-10-17 2016-04-21 Mahle International Gmbh Wärmeübertrager
DE102017201081A1 (de) * 2016-01-25 2017-07-27 Hanon Systems Rohr für einen Wärmetauscher
FR3058211A1 (fr) * 2016-10-27 2018-05-04 Valeo Systemes Thermiques Echangeur thermique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1203922A2 (fr) * 2000-11-02 2002-05-08 Behr GmbH & Co. Condenseur et tube pour celui-ci
US20030141048A1 (en) * 2002-01-31 2003-07-31 Sangok Lee Heat exchanger tube and heat exchanger using the same
EP1342970A1 (fr) * 2000-11-24 2003-09-10 Showa Denko K.K. Tube d'echangeur de chaleur et echangeur de chaleur
WO2004083762A1 (fr) * 2003-03-19 2004-09-30 Calsonic Kansei Uk Limited Tuyaux echangeurs de chaleur
US20040206109A1 (en) * 2001-05-23 2004-10-21 Fumitoshi Nishiwaki Refrigerating cycle device
DE102004030024A1 (de) * 2003-06-23 2005-01-13 Denso Corp., Kariya Wärmetauscher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6216776B1 (en) * 1998-02-16 2001-04-17 Denso Corporation Heat exchanger
DE19845336A1 (de) * 1998-10-01 2000-04-06 Behr Gmbh & Co Mehrkanal-Flachrohr
DE19921407A1 (de) * 1999-05-08 2000-11-09 Behr Gmbh & Co Stranggepreßtes Mehrkammerrohr, insbesondere für einen Wärmeübertrager
JP3821113B2 (ja) * 2003-05-23 2006-09-13 株式会社デンソー 熱交換用チューブ
US6904963B2 (en) * 2003-06-25 2005-06-14 Valeo, Inc. Heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1203922A2 (fr) * 2000-11-02 2002-05-08 Behr GmbH & Co. Condenseur et tube pour celui-ci
EP1342970A1 (fr) * 2000-11-24 2003-09-10 Showa Denko K.K. Tube d'echangeur de chaleur et echangeur de chaleur
US20040206109A1 (en) * 2001-05-23 2004-10-21 Fumitoshi Nishiwaki Refrigerating cycle device
US20030141048A1 (en) * 2002-01-31 2003-07-31 Sangok Lee Heat exchanger tube and heat exchanger using the same
WO2004083762A1 (fr) * 2003-03-19 2004-09-30 Calsonic Kansei Uk Limited Tuyaux echangeurs de chaleur
DE102004030024A1 (de) * 2003-06-23 2005-01-13 Denso Corp., Kariya Wärmetauscher

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2485006A4 (fr) * 2009-09-30 2013-12-11 Daikin Ind Ltd Tube aplati pour échangeur de chaleur
WO2017158293A1 (fr) * 2016-03-18 2017-09-21 Valeo Systemes Thermiques Refroidisseur de gaz pour véhicule automobile
FR3049047A1 (fr) * 2016-03-18 2017-09-22 Valeo Systemes Thermiques Refroidisseur de gaz pour vehicule automobile.

Also Published As

Publication number Publication date
DE102005016540A1 (de) 2006-10-12

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