EP1195572A2 - Cooler, more particularly for automotive vehicle - Google Patents
Cooler, more particularly for automotive vehicle Download PDFInfo
- Publication number
- EP1195572A2 EP1195572A2 EP01123619A EP01123619A EP1195572A2 EP 1195572 A2 EP1195572 A2 EP 1195572A2 EP 01123619 A EP01123619 A EP 01123619A EP 01123619 A EP01123619 A EP 01123619A EP 1195572 A2 EP1195572 A2 EP 1195572A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- shafts
- cooler according
- cooler
- sections
- 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.)
- Granted
Links
Images
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
- F28F1/12—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
- F28F1/24—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 and extending transversely
- F28F1/26—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 and extending transversely the means being integral with the 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
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
-
- 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
Definitions
- the invention relates to a cooler, in particular for Motor vehicles with one of a medium to be cooled flowed through pipe that is to be arranged in a cooling air flow is determined.
- coolers are often used in motor vehicles, which consist of pipe loops arranged in a cooling air flow consist.
- These pipe loops can be made from one smooth round tube or to increase the cooling capacity given length consist of finned tube, the finned tube made using a smooth round tube is attached to the radially projecting, thin-walled ribs or are molded to form the tube as an individual Rings or in the form of a spiral.
- the production such finned tubes and the bending of the finned tubes in is the appropriate loop shape for the respective cooler consuming.
- the invention has for its object a cooler to create the kind mentioned above, the more cost-effective can be manufactured as one using finned tubes manufactured cooler, which on a pipe length unit related cooling capacity is significantly higher than the cooling capacity smooth pipes of comparable dimensions.
- this object is achieved in that the Tube of the cooler a variety of upset, annular Has waves extending radially from the pipe wall extend outside and have a distance from each other.
- the individual waves are preferably designed so that between their radially extending wall sections one related to the interior of the pipe Space is provided.
- the design of the cooler according to the invention stands out due to low manufacturing costs and good cooling performance.
- the upset waves cause an increase in surface area of up to 50% compared to a straight pipe.
- the generated when compressing the waves Inner contour of the tube is swirling through the tube conducted medium achieved, resulting in a better heat transfer and a higher cooling capacity results.
- the waves on the tube can be arranged in any position. This is a flexible adaptation to the installation conditions for the Cooler easily possible.
- Corrugated pipe sections can also provide smooth pipe sections be subsequently formed or with holders can be provided.
- Aluminum tubes can be used for the cooler.
- the drawing shows a section of a tube 1 cooler according to the invention, partially cut.
- the pipe 1 has annular shafts 2 at regular intervals, which extend radially outwards and through axial Compression of a previously smooth, cylindrical tube as a semi-finished product have been generated. Between the waves 2 there are smooth cylindrical tube sections 3, the Diameter essentially corresponds to that of the starting semi-finished product.
- the individual shafts 2 have one another parallel wall sections 4 in the form of circular washers, which are arranged radially to the pipe axis and which on their Edges merge into wall sections 5, 6, which have approximately the shape of partial torus surfaces. Between the wall sections 4 and 6 of each shaft 2 is an annular space 7 provided that in connection with the interior 8 of the tube 1 stands.
- the shafts 2 have an outer diameter which is approximately that 1.3 to 1.5 times the outside diameter of the pipe sections 3 is.
- the width of the gap 7 is essentially equal to the wall thickness of the pipe sections 3, but can also be smaller. Especially in the radially outer Area is a smaller width or insufficient specification of the space 7 without disadvantage for the function.
- the center distance between the individual shafts can be any to get voted. A center distance has proven to be particularly favorable proven to be about the outside diameter of the Pipe sections 3 corresponds.
- the tube 1 from a liquid medium to be cooled e.g. the oil an internal combustion engine or a motor vehicle transmission flows through and on the outside with a cooling air flow applied.
- a liquid medium to be cooled e.g. the oil an internal combustion engine or a motor vehicle transmission
- this is ensured by Formation of waves 2 by up to 50% enlarged surface of tube 1 for one compared to a smooth one Pipe greater heat transfer.
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)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Motor Or Generator Cooling System (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Die Erfindung betrifft einen Kühler, insbesondere für Kraftfahrzeuge, mit einer von einem zu kühlenden Medium durchströmten Rohr, das zur Anordnung in einem Kühlluftstrom bestimmt ist.The invention relates to a cooler, in particular for Motor vehicles with one of a medium to be cooled flowed through pipe that is to be arranged in a cooling air flow is determined.
Zur Schmiermittelkühlung und zur Kühlung von Hydraulikflüssigkeiten werden in Kraftfahrzeugen häufig Kühler verwendet, die aus in einem Kühlluftstrom angeordneten Rohrschleifen bestehen. Diese Rohrschleifen können aus einem glatten Rundrohr oder zur Erhöhung der Kühlleistung bei gegebener Länge aus Rippenrohr bestehen, wobei das Rippenrohr unter Verwendung eines glatten Rundrohrs hergestellt ist, auf dem radial abstehende, dünnwandige Rippen angebracht oder ausgeformt sind, die das Rohr als einzelne Ringe oder in Form einer Wendel umgeben. Die Herstellung derartiger Rippenrohre und das Biegen der Rippenrohre in die für den jeweiligen Kühler geeignete Schleifenform ist aufwendig.For cooling lubricants and cooling hydraulic fluids coolers are often used in motor vehicles, which consist of pipe loops arranged in a cooling air flow consist. These pipe loops can be made from one smooth round tube or to increase the cooling capacity given length consist of finned tube, the finned tube made using a smooth round tube is attached to the radially projecting, thin-walled ribs or are molded to form the tube as an individual Rings or in the form of a spiral. The production such finned tubes and the bending of the finned tubes in is the appropriate loop shape for the respective cooler consuming.
Der Erfindung liegt die Aufgabe zugrunde, einen Kühler der eingangs genannten Art zu schaffen, der kostengünstiger herstellbar ist als ein unter Verwendung von Rippenrohren hergestellter Kühler, wobei die auf eine Rohrlängeneinheit bezogene Kühlleistung erheblich höher ist als die Kühlleistung glatter Rohre vergleichbarer Abmessung.The invention has for its object a cooler to create the kind mentioned above, the more cost-effective can be manufactured as one using finned tubes manufactured cooler, which on a pipe length unit related cooling capacity is significantly higher than the cooling capacity smooth pipes of comparable dimensions.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Rohr des Kühlers eine Vielzahl angestauchter, ringförmiger Wellen aufweist, die sich von der Rohrwand radial nach außen erstrecken und einen Abstand voneinander haben. Die einzelnen Wellen sind hierbei vorzugsweise so gestaltet, daß zwischen ihren sich radial erstreckenden Wandabschnitten ein mit dem Innenraum des Rohrs in Verbindung stehender Zwischenraum vorgesehen ist. Als besonders zweckmäßig hat sich eine Breite des Zwischenraums erwiesen, die kleiner oder gleich der Wandstärke des Rohrs bzw. der Wandabschnitte der Wellen ist.According to the invention this object is achieved in that the Tube of the cooler a variety of upset, annular Has waves extending radially from the pipe wall extend outside and have a distance from each other. The individual waves are preferably designed so that between their radially extending wall sections one related to the interior of the pipe Space is provided. Has been particularly useful the width of the gap turned out to be smaller or equal to the wall thickness of the pipe or the wall sections the waves is.
Die erfindungsgemäße Gestaltung des Kühlers zeichnet sich durch niedrige Herstellkosten und gute Kühlleistung aus. Die angestauchten Wellen bewirken eine Oberflächenvergrößerung von bis zu 50% im Vergleich zu einem geraden Rohr. Zudem wird durch die beim Stauchen der Wellen erzeugte Innenkontur des Rohres eine Verwirbelung des durch das Rohr geleiteten Mediums erreicht, woraus ein besserer Wärmeübergang und eine höhere Kühlleistung resultiert. Als vorteilhaft ist weiterhin anzusehen, daß die Wellen auf dem Rohr in beliebiger Position angeordnet sein können. Dadurch ist eine flexible Anpassung an die Einbaugegebenheiten für den Kühler leicht möglich. Neben den mit Wellen versehenen Wellrohrabschnitten können auch glatte Rohrabschnitte vorgesehen sein, die anschließend umgeformt oder mit Haltern versehen werden können. Zur Herstellung des erfindungsgemäßen Kühlers können Rohre aus Aluminium verwendet werden.The design of the cooler according to the invention stands out due to low manufacturing costs and good cooling performance. The upset waves cause an increase in surface area of up to 50% compared to a straight pipe. In addition, the generated when compressing the waves Inner contour of the tube is swirling through the tube conducted medium achieved, resulting in a better heat transfer and a higher cooling capacity results. As beneficial it can also be seen that the waves on the tube can be arranged in any position. This is a flexible adaptation to the installation conditions for the Cooler easily possible. In addition to those with waves Corrugated pipe sections can also provide smooth pipe sections be subsequently formed or with holders can be provided. To produce the invention Aluminum tubes can be used for the cooler.
Erfindungsgemäß wurde weiterhin gefunden, daß als Ausgangshalbzeug zur Herstellung des Kühlers auch ein glattes, mit einem Kunststoff, insbesondere Polyamid, beschichtetes Rohr aus Aluminium verwendet werden kann, da sich gezeigt hat, daß bei dem Stauchvorgang zur Herstellung der Wellen die Kunststoffbeschichtung nicht beschädigt wird. Die Verwendung eines vorbeschichteten Rohrs führt zu einer erheblichen Fertigungsvereinfachung, da eine nachträgliche Beschichtung des gewellten Rohrs sehr viel aufwendiger ist. According to the invention it was also found that as a starting semifinished product to produce the cooler also a smooth, with a plastic, especially polyamide, coated tube aluminum can be used because it has been shown that in the upsetting process to produce the shafts Plastic coating is not damaged. The usage of a pre-coated pipe leads to a significant one Simplification of production, as a subsequent Coating the corrugated tube is much more complex.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert, das in der Zeichnung dargestellt ist.The invention is described below using an exemplary embodiment explained in more detail, which is shown in the drawing is.
Die Zeichnung zeigt einen Abschnitt eines Rohres 1 eines
erfindungsgemäßen Kühlers, teilweise geschnitten. Das Rohr
1 weist in regelmäßigem Abstand ringförmige Wellen 2 auf,
die sich radial nach außen erstrecken und durch axiales
Stauchen eines zuvor glatten, zylindrischen Rohrs als Ausgangshalbzeug
erzeugt worden sind. Zwischen den Wellen 2
befinden sich glatte zylindrische Rohrabschnitte 3, deren
Durchmesser im wesentlichen dem des Ausgangshalbzeugs entspricht.
Die einzelnen Wellen 2 haben ebene, zueinander
parallele Wandabschnitte 4 in Form von Kreisringscheiben,
die radial zur Rohrachse angeordnet sind und die an ihren
Rändern in Wandabschnitte 5, 6 übergehen, die etwa die Form
von Torusteilflächen haben. Zwischen den Wandabschnitten 4
und 6 jeder Welle 2 ist ein ringförmiger Zwischenraum 7
vorgesehen, der mit dem Innenraum 8 des Rohrs 1 in Verbindung
steht.The drawing shows a section of a
Die Wellen 2 haben einen Außendurchmesser, der etwa das
1,3- bis 1,5-fache des Außendurchmessers der Rohrabschnitte
3 beträgt. Die Breite des Zwischenraums 7 ist im wesentlichen
gleich der Wandstärke der Rohrabschnitte 3, kann aber
auch kleiner bemessen sein. Insbesondere im radial äußeren
Bereich ist eine kleinere Breite oder unzureichende Ausprägung
des Zwischenraums 7 ohne Nachteil für die Funktion.
Der Mittenabstand zwischen den einzelnen Wellen kann beliebig
gewählt werden. Als besonders günstig hat sich ein Mittenabstand
erwiesen, der etwa dem Außendurchmesser der
Rohrabschnitte 3 entspricht.The
Bei einem aus dem Rohr 1 hergestellten Kühler wird das Rohr
1 von einem zu kühlenden flüssigen Medium, z.B. dem Öl
eines Verbrennungsmotors oder eines Kraftfahrzeuggetriebes
durchströmt und auf seiner Außenseite mit einem Kühlluftstrom
beaufschlagt. Hierbei sorgt zum einen die durch die
Ausbildung der Wellen 2 um bis zu 50% vergrößerte Oberfläche
des Rohrs 1 für einen im Vergleich zu einem glatten
Rohr größeren Wärmeübergang. Zum Zweiten bewirkt die durch
die Wellen 2 gebildete, sich periodisch ändernde Innenkontur
des Rohrs 1 Turbulenzen in dem zu kühlenden Medium und
sorgt dadurch für einen erheblich verbesserten Wärmeübergang
zwischen diesem Medium und der Rohrwand. Insgesamt
wird auf diese Weise eine deutlich erhöhte Kühlerleistung
erreicht, die an die Kühlleistung der aufwendigeren Rippenrohre
nahezu heranreicht.In a cooler made from
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10049987 | 2000-10-06 | ||
DE10049987A DE10049987A1 (en) | 2000-10-06 | 2000-10-06 | Coolers, in particular for motor vehicles |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1195572A2 true EP1195572A2 (en) | 2002-04-10 |
EP1195572A3 EP1195572A3 (en) | 2002-10-16 |
EP1195572B1 EP1195572B1 (en) | 2003-11-19 |
Family
ID=7659174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01123619A Expired - Lifetime EP1195572B1 (en) | 2000-10-06 | 2001-10-02 | Cooler, more particularly for automotive vehicle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1195572B1 (en) |
AT (1) | ATE254748T1 (en) |
DE (2) | DE10049987A1 (en) |
ES (1) | ES2178981T1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5386113A (en) * | 1991-12-23 | 1995-01-31 | Bruker-Franzen Analytik Gmbh | Method and device for in-phase measuring of ions from ion trap mass spectrometers |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE423299T1 (en) | 2002-06-11 | 2009-03-15 | Erbsloeh Aluminium Gmbh | HOLLOW CHAMBER PROFILE MADE OF METAL, ESPECIALLY FOR HEAT EXCHANGERS |
DE10225812C1 (en) * | 2002-06-11 | 2003-08-21 | Erbsloeh Aluminium Gmbh | Hollow chamber metal profile for heat exchanger has deformations in base profile wall for increasing heat transfer efficiency |
DE102010021334B4 (en) * | 2010-05-22 | 2013-03-28 | Boa Balg- Und Kompensatoren-Technologie Gmbh | Method for producing a heat exchanger and heat exchanger |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR786832A (en) * | 1934-05-29 | 1935-09-10 | Improvements to temperature exchangers | |
FR1217881A (en) * | 1958-12-11 | 1960-05-06 | High-development heat exchange surface and method for its execution and use | |
FR2152349A1 (en) * | 1971-09-06 | 1973-04-27 | Dallet Jean | |
JPS58160799A (en) * | 1982-03-19 | 1983-09-24 | Toshiba Corp | Heat exchanger |
JPS60120194A (en) * | 1983-11-30 | 1985-06-27 | Shimizu Constr Co Ltd | Tube for heat exchanger |
US4830101A (en) * | 1985-04-30 | 1989-05-16 | Nippondenso Co., Ltd. | Aluminum heat exchanger and method for producing aluminum heat exchanger |
DE29602196U1 (en) * | 1995-02-14 | 1996-03-28 | Zanussi Grandi Impianti Spa | Deformable tube with intermittently variable cross-section inner surface |
JPH08110186A (en) * | 1994-10-12 | 1996-04-30 | Yasuoka:Kk | Spiral pipe for cooling, its manufacture, and cooling device employing it |
-
2000
- 2000-10-06 DE DE10049987A patent/DE10049987A1/en not_active Withdrawn
-
2001
- 2001-10-02 ES ES01123619T patent/ES2178981T1/en active Pending
- 2001-10-02 DE DE50100991T patent/DE50100991D1/en not_active Expired - Lifetime
- 2001-10-02 AT AT01123619T patent/ATE254748T1/en active
- 2001-10-02 EP EP01123619A patent/EP1195572B1/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR786832A (en) * | 1934-05-29 | 1935-09-10 | Improvements to temperature exchangers | |
FR1217881A (en) * | 1958-12-11 | 1960-05-06 | High-development heat exchange surface and method for its execution and use | |
FR2152349A1 (en) * | 1971-09-06 | 1973-04-27 | Dallet Jean | |
JPS58160799A (en) * | 1982-03-19 | 1983-09-24 | Toshiba Corp | Heat exchanger |
JPS60120194A (en) * | 1983-11-30 | 1985-06-27 | Shimizu Constr Co Ltd | Tube for heat exchanger |
US4830101A (en) * | 1985-04-30 | 1989-05-16 | Nippondenso Co., Ltd. | Aluminum heat exchanger and method for producing aluminum heat exchanger |
JPH08110186A (en) * | 1994-10-12 | 1996-04-30 | Yasuoka:Kk | Spiral pipe for cooling, its manufacture, and cooling device employing it |
DE29602196U1 (en) * | 1995-02-14 | 1996-03-28 | Zanussi Grandi Impianti Spa | Deformable tube with intermittently variable cross-section inner surface |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 007, no. 287 (M-264), 21. Dezember 1983 (1983-12-21) -& JP 58 160799 A (TOKYO SHIBAURA DENKI KK), 24. September 1983 (1983-09-24) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 275 (M-426), 2. November 1985 (1985-11-02) -& JP 60 120194 A (SHIMIZU KENSETSU KK), 27. Juni 1985 (1985-06-27) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 08, 30. August 1996 (1996-08-30) -& JP 08 110186 A (YASUOKA:KK), 30. April 1996 (1996-04-30) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5386113A (en) * | 1991-12-23 | 1995-01-31 | Bruker-Franzen Analytik Gmbh | Method and device for in-phase measuring of ions from ion trap mass spectrometers |
Also Published As
Publication number | Publication date |
---|---|
ATE254748T1 (en) | 2003-12-15 |
ES2178981T1 (en) | 2003-01-16 |
DE10049987A1 (en) | 2002-04-11 |
EP1195572B1 (en) | 2003-11-19 |
EP1195572A3 (en) | 2002-10-16 |
DE50100991D1 (en) | 2003-12-24 |
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