US20070029074A1 - Soldered heat exchanger network - Google Patents

Soldered heat exchanger network Download PDF

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Publication number
US20070029074A1
US20070029074A1 US10/572,479 US57247906A US2007029074A1 US 20070029074 A1 US20070029074 A1 US 20070029074A1 US 57247906 A US57247906 A US 57247906A US 2007029074 A1 US2007029074 A1 US 2007029074A1
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US
United States
Prior art keywords
multichamber
soldered
heat exchanger
webs
exchanger network
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.)
Abandoned
Application number
US10/572,479
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English (en)
Inventor
Werner Helms
Jürgen Hägele
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
Assigned to BEHR GMBH & CO. KG reassignment BEHR GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAGELE, JURGEN, HELMS, WERNER
Publication of US20070029074A1 publication Critical patent/US20070029074A1/en
Priority to US12/499,455 priority Critical patent/US20090266527A1/en
Abandoned 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins

Definitions

  • the invention relates to a soldered heat exchanger network as claimed in the preamble of patent claim 1 .
  • Heat exchangers for example coolant radiators or refrigerant condensers for motor vehicles, have a heat exchanger network comprising tubes and ribs, with coolant or refrigerant, for example, flowing through the tubes, and cooling air, in particular ambient air, flowing over the ribs.
  • the tubes are embodied as flat tubes and the ribs are embodied as corrugated ribs which are soldered at their wave peaks to the flat longitudinal sides of the flat tubes.
  • Flat tubes of large depth that is as measured in the direction of the airflow, are often embodied as so-called multichamber tubes, that is to say, in order to divide individual chambers, they have webs which act as tie-rods and thus prevent the flat pipes from swelling or inflating as a result of the inner pressure.
  • multichamber tubes it is therefore important that all the webs are uniformly soldered so that the required internal pressure stability of the flat pipe is maintained.
  • Heat exchanger networks of this type are produced by cutting flat tubes and corrugated ribs to length and then “bundling” them in a suitable device, that is to say arranging the corrugated ribs adjacent to the flat pipes and joining them to form a block which is subsequently clamped and soldered (if appropriate to the associated tube ends or collecting tubes) in a soldering furnace.
  • the clamping presses both the peaks of the corrugated ribs against the flat tubes and also the folded webs against the inner wall of the flat tubes. This contact pressure must be as uniform as possible in order to ensure as uniform and complete a solder as possible.
  • Folded multichamber tubes, multichamber tubes for short are known in various forms from the prior art, for example from EP-A 302 232 by the applicant.
  • the known flat tube has, for example, a central web which is soldered to the opposite side of the flat tube and thus forms two chambers.
  • a modified form of tube additionally has two beads (webs) which are folded from the tube material and are soldered to the opposite side of the tube and form four chambers in total.
  • Folded multichamber flat tubes are known from EP-A 457 470 in which folded webs are alternately formed from opposite sides of the tube and are in each case soldered to the opposite inner wall of the tube.
  • multichamber tubes are known which have opposing folded webs which only extend as far as the centre of the inner width of the tube and are soldered to one another there.
  • the multichamber tubes can be embodied in one piece, that is to say can be provided with a longitudinal welded seam, or can be embodied in two pieces, that is to say with folded and soldered longitudinal seams arranged at the narrow sides.
  • the applicant has disclosed a further form of folded multichamber flat tube in DE-A 102 12 300, in which a method of production is also described.
  • corrugated ribs which have gills or sets of gills in order to improve the transfer of heat, are arranged between the flat tubes.
  • Sets of gills such as this can, as shown for example in EP-B 547 309, be arranged in a continuous fashion in the direction of airflow or—as described in U.S. Pat. No. 4,693,307—be arranged in individual sets of gills, between which are situated smooth, that is to say non-gilled, corrugated rib regions.
  • the corrugated ribs are of smooth design in the region of the webs, that is to say are not provided with gills. “In the region of the webs” is intended to mean: as an extension of the webs in a transverse direction with respect to the flat sides of the multichamber tube. Gills or sets of gills are arranged in the regions between the webs, so that the chambers of the multichamber flat tube are each associated with sets of gills at approximately the same depth.
  • a “gilled” corrugated rib does not have a uniform rib height but rather a lower rib height, the minimum height, is present in the regions of the individual sets of gills than in the smooth, that is to say non-gilled regions, where there is a larger rib height, the maximum height.
  • This irregularity in the rib height is attributable to the fact that the cutting and subsequent “twisting out” of the gills results in the corrugated rib being “pulled in” in the region of the gills, that is to say there is an element of fitting to size.
  • the inventors have utilized this observation and matched the corrugated rib with its gilled arrangement to the multichamber flat tubes.
  • the multichamber flat tubes have longitudinal seams which are either soldered or welded and are preferably arranged on one or both narrow sides of the multichamber flat tube.
  • the corrugated ribs also have smooth regions on the inflow and outflow sides. Above all, straight inflow and outflow edges and a laminar entry region for the airflow are obtained as a result.
  • the smooth regions of the corrugated ribs each have an equal and maximum rib height. This ensures that the same contact pressure is exerted on all webs, and that the joint gap between the ridge of the web and the inner wall of the tube is minimized in a uniform manner. Uniform soldering, with sufficient strength for a tie-rod effect, is obtained as a result.
  • the regions which are provided with gills have a minimum rib height. In this way, when the network is clamped, the clamping force does not act as an area load on the wave peaks but acts directly on the webs in approximately the manner of point-loads, and as a result, the flat tubes are pressed together in the region of the webs until they come into contact.
  • the multichamber tube has two identical chambers which are separated by means of a central web, in the region of which the corrugated ribs are of smooth design. This is the most simple form of multichamber tube, which is used for relatively small system depths.
  • the number of chambers or webs can be increased by any desired number, two webs with three chambers being a preferred solution for motor vehicle heat exchangers.
  • FIG. 1 shows a corrugated rib in a view from above
  • FIG. 1 a shows the corrugated rib of FIG. 1 in a side view
  • FIG. 2 shows a multichamber tube having lateral corrugated ribs.
  • FIG. 1 shows a corrugated rib 1 in a view from above
  • FIG. 1 a shows the corrugated rib 1 in a side view.
  • the corrugated rib 1 serves as a secondary heat exchange area in air-cooled flat tube systems or heat exchanger networks.
  • the corrugated rib 1 is subjected to a flow of air (ambient air) flowing in the direction of the arrow L, and has a depth T in the airflow direction L.
  • the rib height corresponds to the amplitude of the wave pattern (cf. FIG. 1 a ) and is denoted by H.
  • the corrugated rib 1 is preferably produced from a thin aluminium sheet, into which are cut gills 2 on the air side in order to improve the exchange of heat, which gills 2 are arranged in the form of sets of gills 3 , 4 on the rib surface.
  • the ribs 2 are—as is not illustrated here but is disclosed by the prior art (EP-B 547 309 or U.S. Pat. No. 4,693,307) cited in the introduction—inclined relative to the rib surface and in this way form a so-called gill angle.
  • This method of production of the gills 2 results in a constriction, illustrated by the dashed lines 5 , in the region of the sets of gills 3 , 4 .
  • Said constrictions lead to a reduction in the rib height H.
  • the reduced rib height is denoted by h and represents the minimum rib height.
  • the maximum rib height is denoted by H and protrudes beyond the sets of gills 3 , 4 , that is to say, in FIG. 1 , at the inflow and outflow sides and in the centre of the corrugated rib 1 .
  • FIG. 1 As illustrated in FIG.
  • the corrugated rib 1 has wave peaks 1 a , 1 b , by means of which the corrugated rib 1 bears against the tubes (not illustrated here). On account of the constrictions 5 , the wave peaks 1 a , 1 b therefore do not form a continuous straight line. The gills 2 project into the airflow.
  • FIG. 2 shows a folded multichamber tube 6 which has two flat longitudinal sides 6 a , 6 b and two rounded narrow sides 6 a , 6 c .
  • Two webs 7 , 8 are formed out of the upper longitudinal side 6 a by means of folding, which webs 7 , 8 are soldered to the opposite longitudinal side 6 b and thus form tie-rods.
  • the multichamber tube 6 is produced from sheet metal which is closed at the narrow side 6 d by means of a longitudinal welded seam 9 .
  • the multichamber tube 6 thus has three chambers 10 , 11 , 12 in which a coolant or refrigerant flows.
  • corrugated ribs 13 , 14 are arranged on its longitudinal sides 6 a , 6 b , which corrugated ribs 13 , 14 are soldered to the multichamber tube 6 .
  • the corrugated ribs 13 , 14 and the multichamber tube 6 thus constitute a section of a heat exchanger network (not illustrated) which is constructed in accordance with this pattern and can be used in coolant radiators or refrigerant condensers for motor vehicles.
  • the corrugated ribs 13 , 14 each have three sets of gills 15 a , 15 b , 15 c and 16 a , 16 b , 16 c , between which remain non-gilled, that is to say smooth, regions 17 a , 17 b and 18 a , 18 b .
  • the arrangement of the sets of gills 15 a , 15 b , 15 c , 16 a , 16 b , 16 c is selected such that they are situated in the region of the chambers 10 , 11 , 12 , and the smooth regions 17 a , 17 b , 18 a , 18 b are arranged in the region of the webs 7 , 8 .
  • said corrugated ribs also have a reduced rib height on account of the sets of gills 15 a to c and 16 a to c , and a maximum rib height H in the smooth regions 17 a , 17 b , 18 a , 18 b .
  • the maximum rib heights H are situated, as seen in the direction of depth, at the level of the webs 7 , 8 and at the inflow and outflow sides of the corrugated ribs 13 , 14 .
  • the corrugated ribs 13 , 14 and multichamber tubes 6 are bundled to form a heat exchanger network and are subsequently clamped using suitable clamping means in order to prepare for the soldering process.
  • clamping forces occur between the corrugated ribs 13 , 14 and the multichamber tubes 6 , which clamping forces are illustrated here by arrows F, each pointing in the direction of the webs 7 , 8 .
  • the webs 7 , 8 are thus pressed against the inner wall of the longitudinal side 6 b of the tube, so that there is a minimum joint gap at the contact points. This ensures complete soldering and thus provides the multichamber tube 6 with the required internal pressure stability.
  • the invention is explained on the basis of the above exemplary embodiment, that is to say for a multichamber tube having two webs and three chambers. Variations both in terms of shape and also in terms of the number of webs and thus the number of chambers likewise fall within the scope of the invention.
  • An essential aspect of all embodiments is that the clamping forces exerted on the multichamber tube by the corrugated tubes are always directed towards the webs and bring about the required contact pressure there.

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  • 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)
US10/572,479 2003-09-19 2004-09-09 Soldered heat exchanger network Abandoned US20070029074A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/499,455 US20090266527A1 (en) 2003-09-19 2009-07-08 Soldered heat exchanger network

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10343905A DE10343905A1 (de) 2003-09-19 2003-09-19 Gelötetes Wärmeübertragernetz
DE10343905.6 2003-09-19
PCT/EP2004/010068 WO2005028986A1 (de) 2003-09-19 2004-09-09 Gelötetes wärmeübertragernetz

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/499,455 Continuation US20090266527A1 (en) 2003-09-19 2009-07-08 Soldered heat exchanger network

Publications (1)

Publication Number Publication Date
US20070029074A1 true US20070029074A1 (en) 2007-02-08

Family

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US10/572,479 Abandoned US20070029074A1 (en) 2003-09-19 2004-09-09 Soldered heat exchanger network
US12/499,455 Abandoned US20090266527A1 (en) 2003-09-19 2009-07-08 Soldered heat exchanger network

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/499,455 Abandoned US20090266527A1 (en) 2003-09-19 2009-07-08 Soldered heat exchanger network

Country Status (5)

Country Link
US (2) US20070029074A1 (de)
EP (1) EP1668303B1 (de)
CN (1) CN1853082A (de)
DE (1) DE10343905A1 (de)
WO (1) WO2005028986A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017440A1 (en) * 2009-07-24 2011-01-27 Denso Corporation Heat exchanger
US20130248150A1 (en) * 2012-03-22 2013-09-26 Denso Corporation Fin and heat exchanger using the same
US20190036524A1 (en) * 2016-02-11 2019-01-31 Skyworks Solutions, Inc. Switch biasing using isolated negative and positive bias circuitry
WO2020239120A1 (zh) * 2019-05-31 2020-12-03 杭州三花微通道换热器有限公司 扁管、多通道换热器和空调制冷系统

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DE102005044754A1 (de) * 2005-09-20 2007-03-29 Behr Gmbh & Co. Kg Mehrreihiger Wärmeübertrager und Wellrippe für denselben
KR101140802B1 (ko) * 2010-04-13 2012-05-03 잘만테크 주식회사 컴퓨터 부품용 냉각장치
FR2972523A1 (fr) * 2011-03-08 2012-09-14 Peugeot Citroen Automobiles Sa Echangeur thermique optimise et procede d'obtention d'un tel echangeur
CN102353294A (zh) * 2011-08-30 2012-02-15 阳江市宝马利汽车空调设备有限公司 折叠式微通道多孔扁管及其成型方法
JP5403029B2 (ja) * 2011-10-07 2014-01-29 ダイキン工業株式会社 冷凍装置
JP6897372B2 (ja) * 2017-07-03 2021-06-30 ダイキン工業株式会社 熱交換器

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US2655181A (en) * 1949-09-14 1953-10-13 Mccord Corp Tube construction
US4693307A (en) * 1985-09-16 1987-09-15 General Motors Corporation Tube and fin heat exchanger with hybrid heat transfer fin arrangement
US5186251A (en) * 1992-06-01 1993-02-16 General Motors Corporation Roll formed heat exchanger tubing with double row flow passes
US5186250A (en) * 1990-05-11 1993-02-16 Showa Aluminum Kabushiki Kaisha Tube for heat exchangers and a method for manufacturing the tube
US5361829A (en) * 1991-12-19 1994-11-08 Behr Gmbh & Co. Corrugated fin for flat-tube heat exchangers
US5482112A (en) * 1986-07-29 1996-01-09 Showa Aluminum Kabushiki Kaisha Condenser
US5709028A (en) * 1994-12-24 1998-01-20 Behr Gmbh & Co. Process of manufacturing a heat exchanger
US5934365A (en) * 1997-08-21 1999-08-10 Ford Motor Company Heat exchanger
US6209202B1 (en) * 1999-08-02 2001-04-03 Visteon Global Technologies, Inc. Folded tube for a heat exchanger and method of making same
US6230533B1 (en) * 1998-12-11 2001-05-15 Valeo Thermique Moteur Folded tube for a heat exchanger and method for shaping it
US6241012B1 (en) * 1999-12-10 2001-06-05 Visteon Global Technologies, Inc. Folded tube for a heat exchanger and method of making same
US20050085363A1 (en) * 2002-01-17 2005-04-21 Behr Gmbh & Co. Kg Welded multi-chamber tube
US20050090374A1 (en) * 2002-01-17 2005-04-28 Werner Helms Multi-chamber flat tube
US20070023171A1 (en) * 2005-07-29 2007-02-01 Valeo, Inc. Heat exchanger with separators and improved strength

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DE3725602A1 (de) * 1987-08-01 1989-02-09 Sueddeutsche Kuehler Behr Flachrohr fuer einen waermetauscher
JP3030036B2 (ja) * 1989-08-23 2000-04-10 昭和アルミニウム株式会社 複式熱交換器
US5329988A (en) * 1993-05-28 1994-07-19 The Allen Group, Inc. Heat exchanger
US5289874A (en) * 1993-06-28 1994-03-01 General Motors Corporation Heat exchanger with laterally displaced louvered fin sections
DE19510283A1 (de) * 1995-03-22 1996-09-26 Behr Gmbh & Co Flachrohr für einen verlöteten Wärmetauscher und Verfahren zu seiner Herstellung
DE20010994U1 (de) * 2000-06-21 2000-08-31 Behr Gmbh & Co Netz für einen Wärmeübertrager
FR2823559B1 (fr) * 2001-04-17 2004-01-23 Valeo Thermique Moteur Sa Faisceau d'echange de chaleur comportant une surface d'echange perfectionnee, procede pour sa fabrication et echangeur comportant ce faisceau
EP1253391B1 (de) * 2001-04-28 2006-06-28 Behr GmbH & Co. KG Gefalztes Mehrkammerflachrohr
US6662615B2 (en) * 2002-04-23 2003-12-16 Delphi Technologies, Inc. Method to reduce air center middle margin turnaround for folded tube applications

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Publication number Priority date Publication date Assignee Title
US2655181A (en) * 1949-09-14 1953-10-13 Mccord Corp Tube construction
US4693307A (en) * 1985-09-16 1987-09-15 General Motors Corporation Tube and fin heat exchanger with hybrid heat transfer fin arrangement
US5482112A (en) * 1986-07-29 1996-01-09 Showa Aluminum Kabushiki Kaisha Condenser
US5186250A (en) * 1990-05-11 1993-02-16 Showa Aluminum Kabushiki Kaisha Tube for heat exchangers and a method for manufacturing the tube
US5386629A (en) * 1990-05-11 1995-02-07 Showa Aluminum Kabushiki Kaisha Tube for heat exchangers and a method for manufacturing the tube
US5361829A (en) * 1991-12-19 1994-11-08 Behr Gmbh & Co. Corrugated fin for flat-tube heat exchangers
US5186251A (en) * 1992-06-01 1993-02-16 General Motors Corporation Roll formed heat exchanger tubing with double row flow passes
US5709028A (en) * 1994-12-24 1998-01-20 Behr Gmbh & Co. Process of manufacturing a heat exchanger
US5934365A (en) * 1997-08-21 1999-08-10 Ford Motor Company Heat exchanger
US6230533B1 (en) * 1998-12-11 2001-05-15 Valeo Thermique Moteur Folded tube for a heat exchanger and method for shaping it
US6209202B1 (en) * 1999-08-02 2001-04-03 Visteon Global Technologies, Inc. Folded tube for a heat exchanger and method of making same
US6241012B1 (en) * 1999-12-10 2001-06-05 Visteon Global Technologies, Inc. Folded tube for a heat exchanger and method of making same
US20050085363A1 (en) * 2002-01-17 2005-04-21 Behr Gmbh & Co. Kg Welded multi-chamber tube
US20050090374A1 (en) * 2002-01-17 2005-04-28 Werner Helms Multi-chamber flat tube
US20080072426A1 (en) * 2002-01-17 2008-03-27 Behr Gmbh & Co. Kg Multi-chamber flat tube
US20070023171A1 (en) * 2005-07-29 2007-02-01 Valeo, Inc. Heat exchanger with separators and improved strength

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017440A1 (en) * 2009-07-24 2011-01-27 Denso Corporation Heat exchanger
US9074820B2 (en) * 2009-07-24 2015-07-07 Denso Corporation Heat exchanger
US20130248150A1 (en) * 2012-03-22 2013-09-26 Denso Corporation Fin and heat exchanger using the same
US9714794B2 (en) * 2012-03-22 2017-07-25 Denso Corporation Heat exchanger tube having fins with varying louver inclination angle
US20190036524A1 (en) * 2016-02-11 2019-01-31 Skyworks Solutions, Inc. Switch biasing using isolated negative and positive bias circuitry
WO2020239120A1 (zh) * 2019-05-31 2020-12-03 杭州三花微通道换热器有限公司 扁管、多通道换热器和空调制冷系统

Also Published As

Publication number Publication date
WO2005028986A1 (de) 2005-03-31
DE10343905A1 (de) 2005-06-09
EP1668303B1 (de) 2018-04-04
CN1853082A (zh) 2006-10-25
US20090266527A1 (en) 2009-10-29
EP1668303A1 (de) 2006-06-14

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Legal Events

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AS Assignment

Owner name: BEHR GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HELMS, WERNER;HAGELE, JURGEN;REEL/FRAME:018191/0273

Effective date: 20060510

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION