EP0547309B1 - Corrugated rib for a flat tube heat-exchanger - Google Patents
Corrugated rib for a flat tube heat-exchanger Download PDFInfo
- Publication number
- EP0547309B1 EP0547309B1 EP92116971A EP92116971A EP0547309B1 EP 0547309 B1 EP0547309 B1 EP 0547309B1 EP 92116971 A EP92116971 A EP 92116971A EP 92116971 A EP92116971 A EP 92116971A EP 0547309 B1 EP0547309 B1 EP 0547309B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- corrugated rib
- rib
- fins
- corrugated
- creased
- 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.)
- Revoked
Links
- 239000002184 metal Substances 0.000 claims 1
- 239000011324 bead Substances 0.000 description 15
- 210000002816 gill Anatomy 0.000 description 12
- 239000003570 air Substances 0.000 description 9
- 239000012080 ambient air Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002493 climbing effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- F28F1/126—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 corrugated fin for a flat tube heat exchanger according to the preamble of claim 1.
- Such corrugated fins are known, e.g. by US-A-4,693,307.
- corrugated fins are arranged between the flat tubes of the radiator and soldered to the flat tubes.
- these corrugated fins also have a supporting function in such a way that they prevent the flat tubes from bulging when they are subjected to internal pressure. Since the corrugated fins should be made as thin as possible with a view to a high heat transfer performance and a low weight, there is a risk that these corrugated fins will buckle under the pressure of the flat tubes, which tend to "inflate”. This problem was also described in the unpublished DE-A 40 31 577 and solved there with other means, namely so-called support means between the flat tubes in the area of the tube sheets.
- a corrugated fin for a flat tube heat exchanger in which a so-called strengthening beam 42 is provided in the gill area, which is identified by A in FIGS. 8, 9 and 10, i.e. a type of stiffening rib to which it is attached Connect the gills directly on both sides.
- This rib 42 is roof-shaped, it essentially represents a double gill with opposite legs - the stiffening effect is relatively slight due to the simple bending.
- This object is solved by the characterizing features of claim 1, i.e. by arranging a stiffening bead that runs transversely to the long sides of the flat tubes in a gill-free area.
- This stiffening bead achieves a significant stiffening of the corrugated fin and thus prevents the flat tube from bulging when subjected to internal pressure and thus causing the corrugated fin to buckle. Due to the favorable arrangement and design of this stiffening bead, there has been no increase in the pressure drop in the direction of ventilation flow and thus no loss of performance; the weight and thickness of the rib were not changed.
- the shape or shape of the bead alone resulted in an increase in strength, i.e. an increase in kink resistance in such a way that the flat tubes could be subjected to a higher internal pressure than was possible without such a stiffening bead.
- the stiffening bead is roof-shaped, it extends over the entire width of the corrugated fin, that is to say transversely to the air flow direction, and is arranged in the central region of the fin depth, that is to say seen in the air flow direction, where it has the greatest effect, since there the greatest stress occurs due to the bulging of the flat tubes.
- a corrugated fin 1 is shown, which is located between dashed flat tubes 2 of a heat exchanger, not shown, which is preferably the water / air cooler for a motor vehicle driven by an internal combustion engine.
- the flat tubes 2 are flowed through by coolant, which can be under a pressure of several bars during operation.
- the corrugated fin 1 is acted upon by ambient air and thus dissipates the heat of the coolant to the environment.
- the corrugated fin 1 is soldered in a manner not shown to the outer wall of the flat tubes 2 in order to ensure an improved heat transfer.
- the corrugated fin itself is approximately zigzag or accordion-like and has on the one hand plane areas 3 and rounded areas 4 arranged at an angle to one another, on which the corrugated fin is soldered to the flat tubes 2.
- plane areas 3 and rounded areas 4 arranged at an angle to one another, on which the corrugated fin is soldered to the flat tubes 2.
- gills 5 are arranged, which are known per se and which serve to improve the heat transfer to the ambient air.
- FIG. 2 the arrangement of the corrugated fin 1 between the flat tubes 2 is shown schematically in another view, namely in the direction of the tube axes.
- the two cutting planes CC and DD are also drawn in there. Accordingly, Fig. 1 is a section in the plane DD.
- Fig. 3 shows a section in the plane CC through the corrugated fin 1, wherein it can be seen that the corrugated fin has a plurality of gills 5 seen in the direction of air flow, the gills 5 'of the first rib half having a gill angle ⁇ and the ribs 5''of the second rib half also have a gill angle ⁇ , which is opposite to the angle ⁇ , but the same amount.
- the angle ⁇ is the supplementary angle to 180 °.
- a reinforcing bead 6 is provided according to the invention, which is shown in more detail in FIG. 5 and is described in more detail below.
- the corrugated fin is turned over, as shown in detail Z, ie in FIG. 4 .
- This envelope or hem of the corrugated rib on its two edges also achieves a certain climbing effect and stabilization of the edge.
- FIG. 5 shows the actual invention, ie the stiffening bead 6 in more detail, only the detail X from FIG. 3 with an adjacent gill 5 ′ and 5 ′′ being shown here.
- the air flow therefore takes place in the direction of the arrow in the drawing from left to right, but it can equally well take place from right to left, since the corrugated fin is constructed symmetrically with respect to the central axis.
- This is shown by the gill angles ⁇ , which are opposite but the same amount, the angle ⁇ being approximately in the range of 30 °.
- the angle ⁇ is the supplementary angle to 180 °.
- the stiffening bead 6 which in turn is roof-shaped, ie two roof-shaped has mutually inclined surfaces 7 and 8 which enclose an angle ⁇ which can be in the range of approximately 180 ° -2 ⁇ .
- this roof-shaped design practically causes no increase in pressure loss in the air flow direction.
- the "ridge" of the roof-shaped stiffening bead 6 rises only insignificantly, ie with the amount h above the plane of the rib surface.
- the thickness of the rib is marked with s and is approximately 0.1 mm, the rib preferably being made from an aluminum alloy.
- the height h is approximately 1 to 2.5 times the rib thickness s.
- the stiffening bead 6 is produced by a simple embossing process during the manufacture of the rib as it passes through the fin rollers and thus requires no special effort.
- the mode of operation of the stiffening bead becomes particularly clear when one takes a look at FIG. 2, where the stiffening bead is located in the area of the sectional plane D-D. If, due to the application of internal pressure, the flat tubes tend to inflate in the central region, the stiffening bead 6 opposes this deformation process with increased resistance in this region, so that inflation of the tubes and a related buckling of the corrugated fin are avoided. With this simple measure, which has practically no disadvantages, the supporting effect of the corrugated fin can be increased and thus the buckling of the corrugated fin can be relocated to a region of higher internal pressures in the flat tubes.
Description
Die Erfindung bezieht sich auf eine Wellrippe für einen Flachrohrwärmetauscher nach dem Oberbegriff des Patentanspruchs 1. Derartige Wellrippen sind bekannt, z.B. durch die US-A-4,693,307.The invention relates to a corrugated fin for a flat tube heat exchanger according to the preamble of claim 1. Such corrugated fins are known, e.g. by US-A-4,693,307.
Bei heutigen Wasser-/Luftkühlern für Kraftfahrzeuge sind zwischen den Flachrohren des Kühlers Wellrippen angeordnet und mit den Flachrohren verlötet. Neben der Aufgabe der Wärmeübertragung fällt diesen Wellrippen auch eine Abstützfunktion in der Weise zu, daß sie ein Ausbeulen der Flachrohre, wenn diese mit Innendruck beaufschlagt werden, verhindern. Da die Wellrippen im Hinblick auf eine hohe Wärmeübertragungsleistung und ein geringes Gewicht möglichst dünn ausgebildet werden sollen, besteht die Gefahr, daß diese Wellrippen unter dem Druck der Flachrohre, die zum "Aufblähen" neigen, einknicken. Diese Problematik wurde auch in der nicht vorreröfentlichten DE-A 40 31 577 beschrieben und dort mit anderen Mitteln, nämlich sogenannten Abstützmitteln zwischen den Flachrohren im Bereich der Rohrböden, gelöst.In today's water / air coolers for motor vehicles, corrugated fins are arranged between the flat tubes of the radiator and soldered to the flat tubes. In addition to the task of heat transfer, these corrugated fins also have a supporting function in such a way that they prevent the flat tubes from bulging when they are subjected to internal pressure. Since the corrugated fins should be made as thin as possible with a view to a high heat transfer performance and a low weight, there is a risk that these corrugated fins will buckle under the pressure of the flat tubes, which tend to "inflate". This problem was also described in the unpublished DE-A 40 31 577 and solved there with other means, namely so-called support means between the flat tubes in the area of the tube sheets.
Durch die US-A 4,693,307 wurde eine Wellrippe für einen Flachrohrwärmetauscher bekannt, bei welcher im Kiemenbereich, der in den Figuren 8, 9 und 10 jeweils mit A gekennzeichnet ist, ein sogenannter strengthening beam 42 vorgesehen ist, also eine Art Versteifungsrippe, an die sich zu beiden Seiten die Kiemen unmittelbar anschließen. Diese Rippe 42 ist dachförmig ausgebildet, sie stellt quasi eine Doppelkieme mit entgegengesetzten Schenkeln dar - der Versteifungseffekt ist durch die einfache Abwinklung relativ gering.From US-A 4,693,307 a corrugated fin for a flat tube heat exchanger is known, in which a so-called strengthening beam 42 is provided in the gill area, which is identified by A in FIGS. 8, 9 and 10, i.e. a type of stiffening rib to which it is attached Connect the gills directly on both sides. This rib 42 is roof-shaped, it essentially represents a double gill with opposite legs - the stiffening effect is relatively slight due to the simple bending.
Es ist Aufgabe der vorliegenden Erfindung, eine verbesserte Wellrippe der eingangs genannten Art zu schaffen, die ein Einknicken bei Innendruckbeaufschlagung der Flachrohre vermeidet und bei Beibehaltung des günstigen Gewichts und einer hohen Wärmeübertragungsleistung ein Ausbeulen der Flachrohre verhindert.It is an object of the present invention to provide an improved corrugated fin of the type mentioned at the outset, which prevents buckling when the flat tubes are subjected to internal pressure and prevents buckling of the flat tubes while maintaining the favorable weight and high heat transfer capacity.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst, d.h. durch die Anordnung einer Versteifungssicke, die quer zu den Längsseiten der Flachrohre verläuft, in einem Kiemenfreien Bereich. Durch diese Versteifungssicke wird eine nennenswerte Versteifung der Wellrippe erreicht und damit verhindert, daß das Flachrohr bei Innendruckbeaufschlagung ausbeult und somit die Wellrippe einknicken läßt. Durch günstige Anordnung und Ausbildung dieser Versteifungssicke hat sich keine Erhöhung des Druckabfalles in Lüftdurchströmungsrichtung ergeben und somit auch keine Leistungseinbuße; auch das Gewicht bzw. die Dicke der Rippe wurde nicht verändert. Allein durch die Formgestaltung bzw. Ausprägung der Sicke ergab sich eine Festigkeitssteigerung, d.h. eine Erhöhung der Knicksicherheit in der Weise, daß die Flachrohre mit einem höheren Innendruck beaufschlagt werden konnten, als dies ohne eine derartige Versteifungssicke möglich war.This object is solved by the characterizing features of claim 1, i.e. by arranging a stiffening bead that runs transversely to the long sides of the flat tubes in a gill-free area. This stiffening bead achieves a significant stiffening of the corrugated fin and thus prevents the flat tube from bulging when subjected to internal pressure and thus causing the corrugated fin to buckle. Due to the favorable arrangement and design of this stiffening bead, there has been no increase in the pressure drop in the direction of ventilation flow and thus no loss of performance; the weight and thickness of the rib were not changed. The shape or shape of the bead alone resulted in an increase in strength, i.e. an increase in kink resistance in such a way that the flat tubes could be subjected to a higher internal pressure than was possible without such a stiffening bead.
In weiterer Ausgestaltung der Erfindung ist die Versteifungssicke dachförmig ausgebildet, sie erstreckt sich über die gesamte Breite der Wellrippe, also quer zur Luftströmungsrichtung und ist im mittleren Bereich der Rippentiefe, also in Luftströmungsrichtung gesehen, angeordnet, wo sie die größte Wirkung hat, da dort die größte Spannung aufgrund des Ausbeulens der Flachrohre auftritt.In a further embodiment of the invention, the stiffening bead is roof-shaped, it extends over the entire width of the corrugated fin, that is to say transversely to the air flow direction, and is arranged in the central region of the fin depth, that is to say seen in the air flow direction, where it has the greatest effect, since there the greatest stress occurs due to the bulging of the flat tubes.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.
Es zeigen:
- Fig. 1
- eine Wellrippe zwischen Flachrohren in Luftströmungsrichtung gesehen;
- Fig. 2
- eine Wellrippe zwischen Flachrohren, in Richtung der Rohrachsen gesehen;
- Fig. 3
- einen Schnitt durch eine Wellrippe längs der Schnittlinie C-C;
- Fig. 4
- eine Einzelheit Z;
- Fig. 5
- eine weitere Einzelheit X, d.h. die Versteifungssicke.
- Fig. 1
- seen a corrugated fin between flat tubes in the air flow direction;
- Fig. 2
- a corrugated fin between flat tubes, seen in the direction of the tube axes;
- Fig. 3
- a section through a corrugated fin along the section line CC;
- Fig. 4
- a detail Z;
- Fig. 5
- another detail X, ie the stiffening bead.
In Fig. 1 ist eine Wellrippe 1 dargestellt, die sich zwischen gestrichelt dargestellten Flachrohren 2 eines nicht weiter dargestellten Wärmetauschers befindet, bei dem es sich vorzugsweise um den Wasser-/Luftkühler für ein Kraftfahrzeug mit Antrieb durch eine Brennkraftmaschine handelt. Die Flachrohre 2 werden dabei von Kühlmittel durchströmt, welches während des Betriebes unter einem Druck von mehreren Bar stehen kann. Die Wellrippe 1 wird von Umgebungsluft beaufschlagt und führt somit die Wärme des Kühlmittels an die Umgebung ab. Dafür ist die Wellrippe 1 in nicht näher dargestellter Weise mit der Außenwandung der Flachrohre 2 verlötet, um einen verbesserten Wärmedurchgang zu gewährleisten. Die Wellrippe selbst ist etwa zickzackartig oder zieharmonikaartig ausgebildet und weist einerseits im Winkel zueinander angeordnete ebene Bereiche 3 und gerundete Bereiche 4 auf, an welchen die Wellrippe mit den Flachrohren 2 verlötet ist. In den ebenen Bereichen 3 sind sogenannte Kiemen 5 angeordnet, die an sich bekannt sind und die der Verbesserung der Wärmeübertragung an die Umgebungsluft dienen. In Fig. 2 ist in einer anderen Ansicht, nämlich in Richtung der Rohrachsen gesehen, die Anordnung der Wellrippe 1 zwischen den Flachrohren 2 schematisch dargestellt. Dort sind auch die beiden Schnittebenen C-C und D-D eingezeichnet. Demnach ist Fig. 1 also ein Schnitt in der Ebene D-D.In Fig. 1 , a corrugated fin 1 is shown, which is located between dashed
Fig. 3 zeigt einen Schnitt in der Ebene C-C durch die Wellrippe 1, wobei erkennbar wird, daß die Wellrippe in Luftströmungsrichtung gesehen eine Vielzahl von Kiemen 5 aufweist, wobei die Kiemen 5' der ersten Rippenhälfte einen Kiemenwinkel α und die Rippen 5'' der zweiten Rippenhälfte auch einen Kiemenwinkel α aufweisen, welcher dem Winkel α entgegengesetzt, aber betragsmäßig gleich ist. Der Winkel β ist der Ergänzungswinkel zu 180°. Im mittleren Bereich der Rippentiefe ist erfindungsgemäß eine Versteifungssicke 6 vorgesehen, die genauer in Fig. 5 dargestellt ist und unten näher beschrieben wird. Am Anfang und am Ende, in Luftströmungsrichtung gesehen, der Wellrippe ist diese umgeschlagen, wie dies in der Einzelheit Z, d.h. in Fig. 4 dargestellt ist. Durch diesen Umschlag oder Saum der Wellrippe an ihren beiden Rändern wird ebenfalls ein gewisser Versteigungseffekt und eine Stabilisierung der Kante erreicht. Fig. 3 shows a section in the plane CC through the corrugated fin 1, wherein it can be seen that the corrugated fin has a plurality of
In Fig. 5 ist die eigentliche Erfindung, d.h. die Versteifungssicke 6 genauer dargestellt, wobei hier lediglich die Einzelheit X aus der Fig. 3 mit jeweils einer benachbarten Kieme 5' und 5'' dargestellt ist. Die Luftströmung erfolgt also in Richtung des Pfeiles in der Zeichnung von links nach rechts, sie kann allerdings ebensogut von rechts nach links erfolgen, da die Wellrippe in Bezug auf die Mittelachse symmetrisch aufgebaut ist. Dies zeigen die Kiemenwinkel α, die entgegengesetzt, aber betragsmäßig gleich sind, wobei der Winkel α etwa im Bereich von 30° liegt. Der Winkel β ist der Ergänzungswinkel zu 180°. Zwischen den beiden Kiemen 5' und 5'' ist ein kiemenfreier Bereich vorgesehen, in dessen Mitte die Versteifungssicke 6 angeordnet ist, die ihrerseits dachförmig ausgebildet ist, d.h. zwei dachförmig gegeneinander geneigte Flächen 7 und 8 aufweist, die einen Winkel τ einschließen, der im Bereich von ungefähr 180° -2 α liegen kann. Dies bedeutet, daß die Flächen 7 und 8 etwa parallel zu den Kiemenflächen 5' und 5'' verlaufen. Somit wird durch diese dachförmige Ausbildung praktisch keine Erhöhung des Druckverlustes in Luftströmungsrichtung bewirkt. Der "First" der dachförmig ausgebildeten Versteifungssicke 6 erhebt sich nur unwesentlich, d.h.mit dem Betrag h über die Ebene der Rippenoberfläche. Die Dicke der Rippe ist mit s gekennzeichnet und beträgt etwa 0,1 mm, wobei die Rippe vorzugsweise aus einer Aluminiumlegierung hergestellt ist. Die Höhe h ist etwa das 1 bis 2,5-fache der Rippendicke s. Die Versteifungssicke 6 wird durch einen einfachen Prägevorgang während der Herstellung der Rippe beim Durchlauf durch die Rippenwalzen hergestellt und bedarf somit keines besonderen Aufwandes. FIG. 5 shows the actual invention, ie the
Die Wirkungsweise der Versteifungsicke wird besonders klar, wenn man einen Blick auf Fig. 2 wirft, wo sich die Versteifungssicke im Bereich der Schnittebene D-D befindet. Wenn die Flachrohre infolge Innendruckbeaufschlagung dazu neigen, sich im mittleren Bereich aufzublähen, setzt die Versteifungssicke 6 in diesem Bereich diesem Verformungsvorgang einen verstärkten Widerstand entgegen, so daß ein Aufblähen der Rohre und ein damit verbundenes Einknicken der Wellrippe vermieden wird. Mit dieser einfachen Maßnahme, die praktisch keine Nachteile mit sich bringt, kann die Abstützwirkung der Wellrippe gesteigert und somit das Einknicken der Wellrippe in einen Bereich höherer Innendrücke in den Flachrohren verlegt werden.The mode of operation of the stiffening bead becomes particularly clear when one takes a look at FIG. 2, where the stiffening bead is located in the area of the sectional plane D-D. If, due to the application of internal pressure, the flat tubes tend to inflate in the central region, the
Claims (5)
- Corrugated rib for flat-tubed heat exchangers, which is arranged between the flat tubes (2) of a heat exchanger and welded thereto and to which air is applied, having fins (5) arranged transversally to the direction of air flow, characterised in that an area without fins is provided between the fins (5) in which at least one creased stiffening portion (6) is formed in the corrugated rib (1) transversally to the direction of air flow.
- Corrugated rib as claimed in claim 1, characterised in that a creased stiffening portion (6) is provided more or less in the middle of the depth of the corrugated rib (as viewed in the direction of air flow).
- Corrugated rib as claimed in claim 1 or 2, characterised in that the creased stiffening portion (6) is pressed as a roof-shaped portion and extends over almost the whole width (3) of the section of the corrugated rib between adjacent flat pipes (2).
- Corrugated rib as claimed in one of claims 1 to 3 with oppositely arranged fin angles, whereby the fins (5) in the first half of the depth of the rib have a fin angle α and the fins in the second half have a fin angle β = 180° -α, characterised in that the creased stiffening portion (6) is constructed so as to have an angular cross-section and subtends an angle τ=180°-2α.
- Corrugated rib as claimed in claim 4, characterised in that the height (h) of the creased stiffening portion (6) corresponds approximately to the thickness (s) of the metal of the corrugated rib (1), whereby in particular s < h < 2.5 s.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4142019A DE4142019A1 (en) | 1991-12-19 | 1991-12-19 | SHAFT RIB FOR FLAT TUBE HEAT EXCHANGER |
| DE4142019 | 1991-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0547309A1 EP0547309A1 (en) | 1993-06-23 |
| EP0547309B1 true EP0547309B1 (en) | 1996-05-29 |
Family
ID=6447526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92116971A Revoked EP0547309B1 (en) | 1991-12-19 | 1992-10-05 | Corrugated rib for a flat tube heat-exchanger |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5361829A (en) |
| EP (1) | EP0547309B1 (en) |
| DE (2) | DE4142019A1 (en) |
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| DE202009014599U1 (en) | 2009-10-29 | 2010-02-18 | Behr Gmbh & Co. Kg | Heat exchanger |
| EP3015297B2 (en) * | 2014-10-29 | 2022-09-14 | Carl Freudenberg KG | Assembly with a filter element |
| JP2018132247A (en) * | 2017-02-15 | 2018-08-23 | 富士電機株式会社 | Automatic selling machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1868830U (en) * | 1962-11-29 | 1963-03-14 | Georg Plange Fa | HEATING ELEMENT FOR BASE CONVECTORS. |
| US3250325A (en) * | 1963-02-19 | 1966-05-10 | Ford Motor Co | Heat exchange device |
| US3265127A (en) * | 1963-10-21 | 1966-08-09 | Ford Motor Co | Heat exchange element |
| US3298432A (en) * | 1964-05-22 | 1967-01-17 | Przyborowski Stanislaus | Radiators |
| US3993125A (en) * | 1975-11-28 | 1976-11-23 | Ford Motor Company | Heat exchange device |
| US4535839A (en) * | 1982-12-20 | 1985-08-20 | General Motors Corporation | Heat exchanger with convoluted air center strip |
| US4693307A (en) * | 1985-09-16 | 1987-09-15 | General Motors Corporation | Tube and fin heat exchanger with hybrid heat transfer fin arrangement |
| DE4031577A1 (en) * | 1990-10-05 | 1992-04-09 | Behr Gmbh & Co | HEAT EXCHANGER |
-
1991
- 1991-12-19 DE DE4142019A patent/DE4142019A1/en not_active Withdrawn
-
1992
- 1992-10-05 DE DE59206417T patent/DE59206417D1/en not_active Revoked
- 1992-10-05 EP EP92116971A patent/EP0547309B1/en not_active Revoked
- 1992-12-07 US US07/986,473 patent/US5361829A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10343905A1 (en) * | 2003-09-19 | 2005-06-09 | Behr Gmbh & Co. Kg | Soldered heat transfer network |
| DE102004001306A1 (en) * | 2004-01-07 | 2005-08-04 | Behr Gmbh & Co. Kg | Heat exchanger |
| CN107704645A (en) * | 2016-08-09 | 2018-02-16 | 林德股份公司 | Determine the method and its manufacture method of the intensity of tube-bundle heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| US5361829A (en) | 1994-11-08 |
| DE4142019A1 (en) | 1993-06-24 |
| EP0547309A1 (en) | 1993-06-23 |
| DE59206417D1 (en) | 1996-07-04 |
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