WO2008064079A1 - Soldered flat tube for condensers and/or evaporators - Google Patents
Soldered flat tube for condensers and/or evaporators Download PDFInfo
- Publication number
- WO2008064079A1 WO2008064079A1 PCT/US2007/084823 US2007084823W WO2008064079A1 WO 2008064079 A1 WO2008064079 A1 WO 2008064079A1 US 2007084823 W US2007084823 W US 2007084823W WO 2008064079 A1 WO2008064079 A1 WO 2008064079A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- metal strips
- flat tube
- flat
- narrow sides
- Prior art date
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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- 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
-
- 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 present invention relates to a soldered flat tube for condensers and/or evaporators in air-conditioning systems, and more particularly, to tubes for condensers and/or evaporator in motor vehicles.
- the tubes can be produced by deformation of one or more aluminum-containing sheet-metal strips, having two narrow sides and two wide sides.
- the tubes can include inner passages with a hydraulic diameter which is greater than or equal to 0.254 mm, and can have a tube wall thickness of less than 0.25 mm.
- Soldered flat tubes for condensers are known from EP 273 164 Al .
- Flat tubes with inner passage hydraulic diameters in the range from 0.381-1.778 mm are nowadays standard equipment for what are known as parallel-flow condensers.
- Fig. 1 of the above- mentioned document shows a parallel-flow condenser of this type and also proposes a process for producing condensers of this type.
- a sheet-metal strip is shaped into the flat tube and welded using a longitudinal seam.
- a second sheet-metal strip is formed with corrugations running in the transverse direction and is inserted into the flat tube.
- peaks and valleys of the corrugations are soldered to the wide sides of the flat tube, so as to form inner passages running in the longitudinal direction which have hydraulic diameters within the above-mentioned range (cf. Fig. 2 of the above-mentioned document).
- flat tubes for condensers and/or evaporators are produced by extrusion, in which case there are manufacturing engineering limits on the realization of particularly small hydraulic diameters combined with significantly smaller tube wall thicknesses and passage wall thicknesses. From a cost perspective too, the extrusion process does not always stand comparison with other processes. This is true at least if the flat tubes have dimensions (D;d) as required for condensers/evaporators.
- One independent object of the invention is to provide lightweight but also high- performance and low-cost condensers and/or evaporators or flat tubes for them which are to have improved stability. Some embodiments of the present invention achieve this and other desirable objects.
- both narrow sides of the flat tube are reinforced in that they are to have a thickness which is greater than the tube wall thickness, for example at least double the tube wall thickness.
- This proposal simplifies production of the heat exchanger network comprising flat tubes of this type and also corrugated fins, since this network becomes easier to assemble.
- the flat tube comprises three sheet-metal strips, two sheet-metal strips forming the tube wall and the third sheet-metal strip representing an inner insert.
- the two sheet-metal strips which form the tube wall are identical in form, in that one longitudinal edge of the sheet-metal strips has a larger arc and the other longitudinal edge of the sheet-metal strips is configured with a smaller arc, the sides of the sheet-metal strips being disposed oppositely to one another in such a manner that the larger arc of one longitudinal edge of one sheet-metal strip engages around the smaller arc of the longitudinal edge of the other sheet-metal strip, and vice versa.
- one narrow side comprises a bend which lies in a fold of the sheet-metal strip and the other narrow side is formed by one longitudinal edge of the sheet-metal strip being configured with a larger arc, which is placed around a smaller arc at the other longitudinal edge of the sheet- metal strip, the second sheet-metal strip being configured as a corrugated inner insert, the longitudinal edges of which bear or do not bear against the inside of the narrow sides.
- the passage wall thickness is approximately between 0.03-0.10 mm or slightly above. In the case of flat tubes made from a single sheet-metal strip, the tube wall thickness and the passage wall thickness have the same dimensions.
- the tube wall thickness is in the range from approximately 0.08 mm - 0.20 mm, with the passage wall thickness being between 0.03 - 0.10 mm. This applies to both two-part and three-part flat tubes.
- the small dimension (d) of the flat tube is approximately 0.8-1.3 mm and the large dimension (D) is approximately between 8 and 20 mm, preferably approximately 12-16 mm.
- a particularly suitable hydraulic diameter of the passages is between 0.30 and 0.70 mm, with a range between 0.40 and 0.60 mm standing out in particular by virtue of performance advantages.
- condenser or evaporator as a component of an air-conditioning system of motor vehicles which condenser or evaporator has a soldered heat exchanger network made up of flat tubes and fins which are disposed between the flat tubes and through which cooling air flows is described in greater detail below.
- Fig. 1 shows a flat tube produced from three sheet-metal strips
- Fig. 2 shows a flat tube according to an alternate embodiment which can be produced from three sheet-metal strips
- Figs. 3, 4, 5, and 7a-7d show further modified flat tubes comprising three sheet- metal strips;
- Figs. 6, 8, and 9 show different flat tubes which comprise a single deformed sheet- metal strip
- Fig. 10 shows a flat tube which can be produced from two sheet-metal strips.
- All the flat tubes have the common features whereby the hydraulic diameter ho of the passages K is greater than 0.254 mm, the tube wall thickness W d is less than 0.25 mm and both narrow sides 1 are reinforced by having a greater wall thickness S d than the remaining tube wall thickness W d .
- the passage wall thickness IQ may be between 0.03 and 0.15 mm.
- the flat tubes illustrated in Figs. 1-3, 5, and 7 comprise three sheet-metal strips a, b, c and constitute the currently preferred embodiments, with the flat tubes from Fig. 7 constituting the variant which is at present most preferred.
- the flat tubes in the above- mentioned figures all have the feature that the two sheet-metal strips a and b which form the wall parts are identical in form and are arranged oppositely in terms of their sides.
- One longitudinal edge of the sheet-metal strips a and b was formed with a larger arc and the other longitudinal edge was provided with a smaller arc.
- the larger arc of one sheet-metal strip a engages around the smaller arc on the other sheet- metal strip 6 in order to form one narrow side 1 of the flat tube
- the larger arc on the other sheet-metal strip b engages around the smaller arc on the first sheet-metal strip a in order to form the other narrow side 1 of the flat tube.
- the flat tubes of the above- mentioned figures also have the common feature that the third sheet-metal strip c represents an inner insert, the two longitudinal edges of which bear against the inside of the narrow sides 1 and additionally reinforce the latter.
- This text refers to sheet-metal strips a, b, c, because the flat tubes are produced from endless sheet-metal strips on a rolling mill train and are then cut to the required length, which is not shown here.
- Fig. 1 differs from Fig. 2 with regard to the form of the inner insert c.
- Fig. 2 shows the possibility of the corrugation geometry or the configuration of the chambers K possibly being different, in order to take account of specific thermodynamic conditions or in order to achieve advantages in this respect.
- the left-hand narrow side 1 of the flat tube from Fig. 2 indicates that the inner insert c may also be folded against the longitudinal edge in order to additionally reinforce the narrow sides 1.
- the exemplary embodiment shown in Figs. 3 and 4 is particularly suitable for inner inserts c which are produced from extremely thin sheet-metal strips. This may mean sheet-metal thicknesses of 0.03 mm or slightly more. The sheet-metal thickness of the wall parts a and b is also very small, for example around 0.10 mm. To allow sufficient reinforcement of the narrow sides 1 at this point too, the longitudinal edges of the inner insert c have been folded horizontally a number of times and placed against the inside of the narrow sides 1. The horizontal folds of the longitudinal edges of the inner insert c mean that here the thickness S d of the narrow sides 1 is even a multiple of the thickness Wa of the remaining tube wall - up to 5 - 8 times or even more could quite easily be advantageous.
- the two flat tubes illustrated in Fig. 5 differ in terms of the geometry of their chambers K and by the fact that the above-mentioned measure of folding the two longitudinal edges of the inner insert c has been implemented in the lower of the two illustrations but not the upper one.
- the four illustrations corresponding to Figs. 7a-7d differ firstly with regard to the choice of thickness of the sheet-metal strips a, b and c and also the hydraulic diameters ho of the passages K.
- the hydraulic diameters in the upper illustration are smaller, being approximately 0.5 mm.
- the edge configuration of the inner insert c has been modified slightly. The lowest values are to be found in the exemplary embodiment corresponding to Fig. 7d, where the hydraulic diameter ho is, for example, approximately 0.455 mm, the tube wall thickness W d is approximately 0.115 mm and the passage wall thickness K d is approx. 0.05 mm.
- Fig. 6 shows suitable embodiments of a soldered flat tube comprising a single sheet-metal strip. Accordingly, the flat tube does not have a separate inner insert. Rather, chambers K have been produced by in each case a fold 10 formed in a wide side 2, said fold being supported against the other wide side 2.
- the narrow sides 1 have in each case been produced from numerous horizontally disposed folds F which, as shown in the figures, provide a thickness of the narrow side 1 which amounts to a multiple of the thickness of the sheet-metal strip.
- Fig. 8 shows another flat tube made from a single sheet-metal strip in an intermediate stage shortly before completion.
- This flat tube is to comprise one sheet-metal strip with a thickness W d which is closer to the upper limit, i.e. could be for example 0.20 mm. The reason for this could be that the thickness S d in the narrow sides 1 is only double the thickness of the sheet-metal strip or the tube wall thickness W d .
- Fig. 9 shows that it is possible to form very stable narrow sides 1 even in the case of flat tubes comprising just one sheet-metal strip.
- a sheet-metal strip with a thickness approximately between 0.10-0.15 mm.
- two spaced-apart folds F are formed in the sheet-metal strip.
- a bend B is produced in each of the folds F, thereby forming the narrow sides 1 of the flat tube.
- corrugated a portion of the sheet-metal strip thereby forming the passages K in the closed flat tube, as shown in the figure.
- Fig. 10 shows a flat tube with passages K which has been produced from two sheet-metal strips a, c.
- the sheet-metal strip a forms the tube wall, whereas the sheet- metal strip c forms an inner insert.
- the sheet-metal strip a may in this case have a thickness of approximately 0.20 mm.
- the thickness of the inner insert c is only approximately 0.15 mm or less, for example 0.10 mm.
- a fold F is formed in the sheet-metal strip a.
- a small arc is formed at one longitudinal edge of the sheet- metal strip a.
- the other longitudinal edge of the sheet-metal strip a may likewise already have been preformed, so that it can subsequently be placed around the small arc.
- the sheet- metal strip c i.e. the inner insert of the flat tube
- the inner insert c is introduced into the flat tube, which can be gradually closed up.
- a bend B is produced in the above-mentioned fold F, resulting in the formation of the narrow side 1 located at the top in the figure.
- the two longitudinal edges of the inner insert c bear against the inside of the narrow sides 1 of the flat tube.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0719079-4A2A BRPI0719079A2 (en) | 2006-11-22 | 2007-11-15 | WELD FLAT PIPE FOR CONDENSERS AND / OR EVAPORATORS |
CN2007800431443A CN101548149B (en) | 2006-11-22 | 2007-11-15 | Soldered flat tube for condensers and/or evaporators |
US12/446,378 US20110005738A1 (en) | 2006-11-22 | 2007-11-15 | Soldered flat tube for condensers and/or evaporators |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006054814.0 | 2006-11-22 | ||
DE102006054814A DE102006054814B4 (en) | 2006-11-22 | 2006-11-22 | Soldered flat tube for capacitors and / or evaporators |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008064079A1 true WO2008064079A1 (en) | 2008-05-29 |
Family
ID=39326147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/084823 WO2008064079A1 (en) | 2006-11-22 | 2007-11-15 | Soldered flat tube for condensers and/or evaporators |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110005738A1 (en) |
CN (1) | CN101548149B (en) |
BR (1) | BRPI0719079A2 (en) |
DE (1) | DE102006054814B4 (en) |
WO (1) | WO2008064079A1 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008013018A1 (en) | 2008-03-07 | 2009-09-10 | Modine Manufacturing Co., Racine | Flat tube for heat exchanger, has corrugated rib that is arranged in tube such that wave crest and/or wave trough cooperates with groove, where groove is arranged in tube wall and contact rib |
DE102008052785B4 (en) * | 2008-10-22 | 2022-06-02 | Innerio Heat Exchanger GmbH | Flat tube and manufacturing process |
DE102009041618A1 (en) * | 2009-09-17 | 2011-03-24 | Behr Gmbh & Co. Kg | Flat tube for a heat exchanger |
BR112013018418A2 (en) | 2011-01-31 | 2017-08-01 | Delphi Tech Inc | method of forming a heat exchanger tube |
FR2973490B1 (en) * | 2011-03-31 | 2018-05-18 | Valeo Systemes Thermiques | THERMAL EXCHANGER TUBE, HEAT EXCHANGER AND CORRESPONDING PROCESSING METHOD |
DE102011085935A1 (en) | 2011-11-08 | 2013-05-08 | Behr Gmbh & Co. Kg | Flat tube for heat exchanger e.g. vaporizer, has flat web that is connected with inwardly pointing edge regions of side wall |
JP6050958B2 (en) * | 2012-06-01 | 2016-12-21 | 株式会社ケーヒン・サーマル・テクノロジー | Flat heat exchanger tube |
DE102012211350A1 (en) | 2012-06-29 | 2014-01-02 | Behr Gmbh & Co. Kg | Flat tube and heat exchanger with such a flat tube |
DE102013209548A1 (en) * | 2013-05-23 | 2014-11-27 | Friedrich Boysen Gmbh & Co. Kg | Channel for guiding a flowing fluid |
CN104596340B (en) * | 2013-10-30 | 2018-07-24 | 格朗吉斯铝业(上海)有限公司 | Heat transmission multichannel folds flat tube |
DE102014200708A1 (en) | 2014-01-16 | 2015-07-16 | MAHLE Behr GmbH & Co. KG | flat tube |
DE102014200680A1 (en) * | 2014-01-16 | 2015-07-16 | Mahle International Gmbh | Heat exchanger |
CN104807357A (en) * | 2014-01-24 | 2015-07-29 | 泰安鼎鑫冷却器有限公司 | Combined type radiating tube |
CN104110995B (en) * | 2014-04-30 | 2017-02-01 | 美的集团股份有限公司 | Composite flat tube, parallel-flow heat exchanger and air conditioner |
DE102014011745B4 (en) | 2014-08-07 | 2023-05-11 | Modine Manufacturing Company | Brazed heat exchanger and method of manufacture |
CN106871680A (en) * | 2015-12-10 | 2017-06-20 | 泰安鼎鑫冷却器有限公司 | A kind of box-like radiating tube of three parts groups |
CN106767090A (en) * | 2016-12-07 | 2017-05-31 | 泰安福星汽车配件有限公司 | A kind of reinforced radiating tube and processing technology |
JP6931533B2 (en) * | 2017-01-13 | 2021-09-08 | 日立ジョンソンコントロールズ空調株式会社 | How to make a heat exchanger |
FR3066015B1 (en) * | 2017-05-02 | 2019-11-01 | Valeo Systemes Thermiques | HEAT EXCHANGER TUBE AND THERMAL HEAT EXCHANGER |
WO2019123024A1 (en) * | 2017-12-19 | 2019-06-27 | Subros Limited | Heat exchanger tube and a method of manufacturing thereof |
CN110822940A (en) * | 2018-08-14 | 2020-02-21 | 陕西重型汽车有限公司 | Multi-channel radiator and radiating pipe for vehicle |
CN214582724U (en) * | 2021-02-05 | 2021-11-02 | 杭州三花微通道换热器有限公司 | Heat exchange tube and heat exchanger with same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001235294A (en) * | 2000-02-18 | 2001-08-31 | Mitsubishi Heavy Ind Ltd | Heat exchanger tube |
EP1681528A1 (en) * | 2003-09-30 | 2006-07-19 | Valeo Thermal Systems Japan Corporation | Heat exchanger tube |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2819731A (en) * | 1954-11-16 | 1958-01-14 | Gen Motors Corp | Refrigerating apparatus |
US3021804A (en) * | 1955-02-18 | 1962-02-20 | Modine Mfg Co | Method of fabricating heat exchangers |
US2912749A (en) * | 1956-01-13 | 1959-11-17 | Modine Mfg Co | Method of making a heat exchanger |
US3053511A (en) * | 1957-11-15 | 1962-09-11 | Gen Motors Corp | Clad alloy metal for corrosion resistance and heat exchanger made therefrom |
JPS57105690A (en) * | 1980-12-24 | 1982-07-01 | Nippon Denso Co Ltd | Heat exchanger |
JPS5894A (en) * | 1981-06-25 | 1983-01-05 | Tsuchiya Mfg Co Ltd | Manufacture of flat tube unit for heat exchanger |
US4688311A (en) * | 1986-03-03 | 1987-08-25 | Modine Manufacturing Company | Method of making a heat exchanger |
US5185925A (en) * | 1992-01-29 | 1993-02-16 | General Motors Corporation | Method of manufacturing a tube for a heat exchanger |
GB2268260A (en) * | 1992-06-24 | 1994-01-05 | Llanelli Radiators Ltd | Heat exchange tubes formed from a unitary portion of sheet or strip material |
US5441105A (en) * | 1993-11-18 | 1995-08-15 | Wynn's Climate Systems, Inc. | Folded parallel flow condenser tube |
US6209202B1 (en) * | 1999-08-02 | 2001-04-03 | Visteon Global Technologies, Inc. | Folded tube for a heat exchanger and method of making same |
DE19947803A1 (en) * | 1999-10-05 | 2001-04-12 | Behr Gmbh & Co | Reactor with a heat exchanger structure |
DE10137334A1 (en) * | 2001-07-31 | 2003-02-27 | Modine Mfg Co | Flat tube, manufacturing process, heat exchanger |
JP2004028469A (en) * | 2002-06-26 | 2004-01-29 | Toyo Radiator Co Ltd | Heat exchanger core |
JP2005533995A (en) * | 2002-07-26 | 2005-11-10 | ベール ゲーエムベーハー ウント コー カーゲー | Heat exchanger |
EP1557631B1 (en) * | 2004-01-20 | 2014-12-03 | Calsonic Kansei Corporation | Heat exchanger |
US7487589B2 (en) * | 2004-07-28 | 2009-02-10 | Valeo, Inc. | Automotive heat exchanger assemblies having internal fins and methods of making the same |
FR2881218B1 (en) * | 2005-01-24 | 2007-06-01 | Valeo Systemes Thermiques | FLAT TUBE WITH INSERT FOR HEAT EXCHANGER |
US7686070B2 (en) * | 2005-04-29 | 2010-03-30 | Dana Canada Corporation | Heat exchangers with turbulizers having convolutions of varied height |
-
2006
- 2006-11-22 DE DE102006054814A patent/DE102006054814B4/en active Active
-
2007
- 2007-11-15 CN CN2007800431443A patent/CN101548149B/en not_active Expired - Fee Related
- 2007-11-15 US US12/446,378 patent/US20110005738A1/en not_active Abandoned
- 2007-11-15 WO PCT/US2007/084823 patent/WO2008064079A1/en active Application Filing
- 2007-11-15 BR BRPI0719079-4A2A patent/BRPI0719079A2/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001235294A (en) * | 2000-02-18 | 2001-08-31 | Mitsubishi Heavy Ind Ltd | Heat exchanger tube |
EP1681528A1 (en) * | 2003-09-30 | 2006-07-19 | Valeo Thermal Systems Japan Corporation | Heat exchanger tube |
Also Published As
Publication number | Publication date |
---|---|
DE102006054814A1 (en) | 2008-05-29 |
CN101548149A (en) | 2009-09-30 |
DE102006054814B4 (en) | 2010-07-01 |
CN101548149B (en) | 2011-07-06 |
US20110005738A1 (en) | 2011-01-13 |
BRPI0719079A2 (en) | 2014-03-04 |
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