EP0109393B1 - Wirbelbewegungen erzeugendes radiatorrohr für einen radiator - Google Patents

Wirbelbewegungen erzeugendes radiatorrohr für einen radiator Download PDF

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Publication number
EP0109393B1
EP0109393B1 EP82902115A EP82902115A EP0109393B1 EP 0109393 B1 EP0109393 B1 EP 0109393B1 EP 82902115 A EP82902115 A EP 82902115A EP 82902115 A EP82902115 A EP 82902115A EP 0109393 B1 EP0109393 B1 EP 0109393B1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
principal heat
turbulator
radiator
tube
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.)
Expired
Application number
EP82902115A
Other languages
English (en)
French (fr)
Other versions
EP0109393A1 (de
EP0109393A4 (de
Inventor
Eugene E. Rhodes
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.)
Ford Motor Co Ltd
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22168009&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0109393(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd filed Critical Ford Werke GmbH
Publication of EP0109393A1 publication Critical patent/EP0109393A1/de
Publication of EP0109393A4 publication Critical patent/EP0109393A4/de
Application granted granted Critical
Publication of EP0109393B1 publication Critical patent/EP0109393B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-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
    • F28D1/03—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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28F2001/027—Tubular elements of cross-section which is non-circular with dimples

Definitions

  • the invention relates to a radiator construction having an elongated turbulator radiator tube.
  • EP-A-30072 discloses a heat exchanger comprising a tube of a flat cross-sectional shape formed of metal and permitting a heat exchanging medium to flow therethrough, fins in thermal contact with said tube for promoting exchange of heat between the heat exchanging medium and a fluid and a plurality of projections formed on one side of said tube and arranged in a direction intersecting the axis of said tube, said projections each extending from said tube by a distance less than the thickness of a wall of said tube.
  • This better heat transfer characteristic permits more rapid cooling of a coolant passing through the radiator tube and can reduce the size of radiator required in order to give a predetermined amount of cooling capacity.
  • a radiator construction having an elongated turbulator radiator tube having an interior defining a fluid conduit, which turbulator radiator tube comprises; a first principal heat transfer surface. having a first edge and a second edge a second principal heat transfer surface having a first edge and a second edge interconnecting surface means for independently interconnecting both said first edges and said second edges of said first principal heat transfer surface and said second principal heat transfer surface characterised by, each of said principal heat transfer surfaces having a plurality of flow diverting members placed along the length thereof, each of the flow diverting members being deformed from said principal surfaces toward said interior of said tube said flow diverting members being offset from one another and being arranged as discontinuous indentations across the principal heat transfer surfaces from said first edge to said second edge of said principal heat transfer surfaces whereby said first and second principal heat transfer surfaces are bowed outwardly from said interior of said tube.
  • each turbulator barrier is formed from a plurality of elongated, rectangular deformations which extend perpendicularly across each of the principal heat transfer surfaces from the first edge thereof to the second edge thereof.
  • the turbulator barriers on the first principal heat transfer surface are in a staggered relationship with respect to the turbulator barriers formed on the second principal heat transfer surface.
  • a radiator construction is joined to a coolant tank 12.
  • FIG. 1 there is seen only the right-hand coolant tank 12, but, of course, as is obvious to any skilled artisan, the radiator construction 10 would also have a left-hand coolant tank.
  • coolant may be passed from a tank on one side of the radiator to a tank on the other side of the radiator through a plurality of hollow turbulator radiator tubes 14.
  • Corrugated heat transfer fins 16 are mounted between juxtaposed of the turbulator radiator tubes extending between the coolant tanks. As the coolant flows through the turbulator radiator tubes, heat is given up from principal heat transfer surfaces thereof in contact with the heat transfer fins whereby the temperature of the coolant is reduced.
  • the turbulator radiator tubes and heat transfer fins may be joined to one another in a fluxless aluminum brazing operation which is well known in the art.
  • FIGs 2 and 4 of the drawings there is shown a prior art construction for the turbulator radiator tubes 14.
  • FIGs 3, 5, 6 and 7 the construction of a new turbulator radiator tube 114, in accordance with the teachings of this invention.
  • the significant difference between the prior art construction 14 and the new construction 114 is that the new construction provides an improved physical contact between the turbulator radiator tube and its associated heat transferfins. By use of this new construction, more heat may be extracted from a coolant flowing through the turbulator radiator tubes per unit volume of radiator construction 10. How this improved heat transfer contact is achieved will be explained in greater detail hereinbelow.
  • the turbulator radiator tube 14 of prior art construction is seen best in Figures 2 and 4.
  • a first principal heat transfer surface 20 and a second principal heat transfer surface 22 are respectively facing and underneath the surfaces as shown in Figure 2 and top and bottom surfaces as shown in Figure 4.
  • These surfaces define generally planar surfaces which when associated with heat transfer fins 16 provide the principal area of transferring heat from the turbulator radiator tubes to the heat transfer fins for dissipation to the atmosphere.
  • Each of these principal heat transfer surfaces have a first edge 24 and a second edge 26. The edges are not sharply defined but generally are the areas at which the generally planar portions of the principal heat transfer surfaces come to an end.
  • first edges 24 of the first principal heat transfer surface 20 and the second principal heat transfer surface 22 are interconnected by a generally continuous surface 28 which is integrally formed with the principal heat transfer surfaces.
  • the second edges 26 of the first principal heat transfer surface and the second principal heat transfer surface are interconnected by interconnecting surfaces 30 which, in association with solder 32 used in conjunction therewith, form a sealed construction for the turbulator radiator tube 14.
  • the method of forming and sealing such a turbulator radiator tube is well known in the industry and forms no part of this invention.
  • the prior art turbulator radiator tube 14 has a plurality of elongated turbulator elements 34 extending across the length thereof generallyfrom the first edge 24 to the second edge 26 of each of the principal heat transfer surfaces 20 and 22. As is best seen in Figure 2, these turbulator elements are staggered and are generally formed by deforming the material forming the turbulator radiator tubes toward the interior of the tube. Normally the material forming the tube is aluminum or some suitable aluminum alloy.
  • the difficulty with this type of construction for a turbulator radiatortube 14 is that the principal heat transfer surfaces 20 and 22 are relatively flat.
  • the tube 14 is flexible in the sense that it may be twisted if opposite ends of the tube are gripped and rotated in opposite directions.
  • the principal heat transfer surfaces 20 and 22 once again achieve the relatively flat condition.
  • the difficulty with this condition is that when a plurality of such tube and heat transfer fins are laid up for the purpose of assembly there is no flexibility in the turbulator radiator tubes to take up assembly tolerances.
  • the maximum heat transfer capability of the unit is not achieved because of the inflexibility of the turbulator radiator tubes to accommodate dimensional tolerance differences in the heat transfer fins.
  • the heat transfer fins normally have a great deal of dimensional variation in the units because they are made from relatively thin materials and precise control of the dimensions of these fin units is extremely difficult, if not impossible.
  • any tolerances to be taken up are taken up almost totally by the heattransferfins.
  • This tolerance take- up causes many of the V-shaped contacting edges of the heat transfer fins to be crushed, away from a line contact with the turbulator radiator tube, thus reducing the heat transfer contact therebetween and, in many cases, causing spaces or slight voids between the heat transfer points.
  • the entire purpose of the structure of the turbulator radiator tube 114 of this invention is to provide flexibility not only in the heat transfer fin 16 but also in the turbulator radiator tube 114 so that both elements may be brought into the best physical contact to ensure the best heat transfer characteristics from the entire radiator construction 10. Thiswill be better understood from the discussion set forth hereinbelow.
  • the turbulator radiator tube 114 has a first principal heat transfer surface 120 and a second principal heat transfer surface 122.
  • These principal heat transfer surfaces have first edges 124 and second edges 126 in juxtaposition to one another. Again, these edges are not sharply defined, but merely define a transition from the principal heat transfer surface to some type of an interconnecting surface. For example, in the case of the first edges 124, they are interconnected by a continuous surface 128 ( Figure 5) which is integrally formed with the entire structure. In the same manner, the second edges 126 are interconnected by interconnecting surfaces 130 and the solder 132 associated therewith.
  • turbulator barriers are placed along the length of both the first principal heat transfer surface 120 and the second principal heat transfer surface 122.
  • the turbulator barriers' are formed from two or more indentations 152.
  • the first principal heat transfer surface 120 has four indentations 152 to define the turbulator barrier 150
  • the second principal heat transfer surface 122 has three indentations 152 to define the turbulator barrier 150.
  • the turbulator barriers 150 formed on both the first and second principal heat transfer surfaces extend generally from the first edge 124 to the second edge 126 of each of the principal heat transfer surfaces.
  • the entire purpose for making the turbulator barriers 150 discontinuous across the principal heat transfer surfaces 120 and 122 is so that when the surfaces are being formed into the turbulator radiator tube 114 by soldering the interconnecting surfaces 130 the principal heat transfer surfaces may be bowed outwardly from the interior of the tube to give a slight crown to both of the principal heat transfer surfaces.
  • This crowned effect may best be seen in Figure 5.
  • This slight crown is much different than the very flat surfaces achieved for the prior art turbulator radiator tube 14, as is seen in Figure 4.
  • the bowing or crowning of the turbulator radiator tube 114 permits itto also take up tolerances when it is brought into an assembled condition with a plurality of heat transfer fins 16 in order to form a radiator construction 10.
  • the bowing or crowning of the principal heat transfer surfaces of the turbulator radiator tube 114 allows a flexing of that surface to take up tolerances when it is assembled with the heat transfer fins in an assembly operation.
  • the turbulator radiator tube 144 of this invention makes more intimate contact with associated heat transfer fins and thereby improves the unit heat transfer capability of each unit area of the radiator construction 10.
  • This improved heat transfer efficiency allows for two options.
  • a radiator construction of the same size using prior art turbulator radiator tubes 14 as compared with a radiator construction using turbulator radiator tubes 114 would result in dimensionally the same size radiator, but the construction made with the improved turbulator radiator tubes 114 would have the capacity for handling a greater cooling load.
  • radiator construction using the turbulator radiator tubes 114 of the present invention would require that the overall size of the radiator construction be reduced, that is, less fin and tube area would be required in order to do the same cooling job as would be accomplished by a larger size radiator containing the prior art type turbulator radiator tubes 14.
  • turbulator barrier 150 While the preferred type of turbulator barrier 150 has been illustrated in Figures 3, 5 and 6, many other types of barrier constructions may be used which still result in a turbulator radiator tube 114 which has a crowned construction and thus has the ability of taking up tolerances when assembled with heat transfer fins. It should be kept in mind that it is not necessary to space barriers on the first principal heat transfer surface and the second principal heat transfer surface in a staggered relationship, although this is preferred. The barriers may be placed one below the other. In this specification the term "turbulator barrier" is used to mean a series of indentations made in a principal heat transfer surface which may be generally aligned in some configuration.
  • Figures 7A through 7G a number of different patterns are shown which, if placed on the principal heat transfer surfaces, would produce the benefits of this invention.
  • the individual indentations are formed into a turbulator barrier generally having an arrowhead shape.
  • the indentations are placed to define a turbulator barrier having a generally curved configuration.
  • the indentations are placed to define a turbulator barrier having a generally herringbone construction.
  • Figure 7D the indentations are placed in the principal heat transfer surface in a manner which defines a turbulator barrier formed of a plurality of triangular members.
  • indentations are placed in the principal heat transfer surface in a manner which defines a turbulator barrier extending generally at an angle between the edges of the principal heat transfer surface.
  • circular indentations are placed in the principal heat transfer surface generally in aligned position.
  • indentations are placed in the principal heat transfer surface generally in a random fashion and therefore do not define a turbulator barrier per se as no generally associated structure .extends from one edge of the principal heat transfer surface to the other edge thereof.

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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)

Claims (3)

1. Eine Radiatorausführung, die ein länglich geformtes, eine Verwirbelung erzeugendes Radiatorrohr mit einem als Flüssigkeitskanal ausgebildeten Innenraum aufweist, wobei das eine Verwirbelung erzeugende Radiatorrohr umfaßt: eine erste Hauptheizfläche (120) mit einer ersten Kante (124) und einer zweiten Kante (126), eine zweite Hauptheizfläche (122) mit einer ersten Kante (124) und einer zweiten Kante (126), Flächenverbindungsvorrichtungen (128, 130, 132), um sowohl die genannten ersten Kanten (124) als auch die genannten zweiten Kanten (126) der genannten ersten Hauptheizfläche (120) und der genannten zweiten Hauptheizfläche (122) in unabhängiger Weise miteinander zu verbinden, dadurch gekennzeichnet, daß jede der genannten Hauptheizflächen (120, 122) eine Vielzahl von über ihre Länge verteilten Stromumlenkelementen (152) aufweist, wobei jedes der Stromumlenkelemente (152) so geformt ist, daß es, ausgehend von den genannten Hauptflächen (120, 122), in den genannten Innenraum des genannten Rohrs (114) hineinragt, und wobei die genannten Stromumlenkelemente gegeneinander versetzt und in diskontinuierlicher Weise als Vertiefungen über die Hauptheizflächen (120, 122) zwischen der genannten ersten Kante (124) und der genannten zweiten Kante (126) der genannten Hauptheizflächen verteilt angeordnet sind, so daß sich die genannten ersten und zweiten Hauptheizflächen (120, 122) im Verhältnis zum genannten Innenraum des genannten Rohrs (114) nach außen wölben.
2. Eine Radiatorausführung gemäß Anspruch 1, wobei die genannten Stromumlenkelemente in diskontinuierlicher Weise als Sperren über die Hauptheizflächen verteilt angeordnet sind und jede der genannten Sperren aus zwei oder mehr Vertiefungen besteht.
3. Eine Radiatorausführung gemäß Anspruch 2, wobei die genannten, eine Verwirbelung erzeugenden Sperren aus einer Vielzahl von rechtwinkligen Ausformungen bestehen, die sich im allgemeinen vertikal über die gennannten Hautheizflächen zwischen der genannten ersten Kante und der genannten zweiten Kante (15) erstrecken.
EP82902115A 1982-05-19 1982-05-19 Wirbelbewegungen erzeugendes radiatorrohr für einen radiator Expired EP0109393B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1982/000692 WO1983004090A1 (en) 1982-05-19 1982-05-19 Turbulator radiator tube and radiator construction derived therefrom

Publications (3)

Publication Number Publication Date
EP0109393A1 EP0109393A1 (de) 1984-05-30
EP0109393A4 EP0109393A4 (de) 1984-09-19
EP0109393B1 true EP0109393B1 (de) 1987-08-12

Family

ID=22168009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82902115A Expired EP0109393B1 (de) 1982-05-19 1982-05-19 Wirbelbewegungen erzeugendes radiatorrohr für einen radiator

Country Status (4)

Country Link
EP (1) EP0109393B1 (de)
JP (1) JPS59500877A (de)
DE (1) DE3276959D1 (de)
WO (1) WO1983004090A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334489A (ja) * 1986-07-28 1988-02-15 Nippon Denso Co Ltd 熱交換器
KR20100106434A (ko) * 2008-01-10 2010-10-01 베헤르 게엠베하 운트 콤파니 카게 열교환기용 압출 튜브
DE102009057232A1 (de) * 2009-12-05 2011-06-09 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Detroit Rohrförmiger Wärmetauscher für Kraftfahrzeug-Klimaanlage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1417087A (en) * 1920-01-05 1922-05-23 Mathes Peter Radiator construction
US1421546A (en) * 1920-04-28 1922-07-04 David O Parkin Radiator
US1730719A (en) * 1927-01-27 1929-10-08 Sam Briskin Radiator construction
US2032065A (en) * 1932-11-16 1936-02-25 Modine Mfg Co Radiator core
US2011854A (en) * 1934-03-23 1935-08-20 Gen Motors Corp Method of making radiator cores
US3262495A (en) * 1961-12-21 1966-07-26 Blackstone Corp Heat transfer core structure
US3521707A (en) * 1967-09-13 1970-07-28 Ass Eng Ltd Heat exchangers
GB1254372A (en) * 1969-03-04 1971-11-24 Rootes Motors Ltd Improvements in or relating to methods of making heat exchangers
JPS593276Y2 (ja) * 1975-10-17 1984-01-28 カブシキガイシヤ ツチヤセイサクシヨ ネツコウカンタイ
CH592290A5 (de) * 1975-10-24 1977-10-31 Runtal Holding Co Sa
FR2402850A1 (fr) * 1977-09-09 1979-04-06 Ferodo Sa Dispositif de tube a ailettes pour echangeur de chaleur, notamment pour radiateur de vehicule automobile, et son procede de fabrication
JPS5680698A (en) * 1979-11-30 1981-07-02 Nippon Denso Co Ltd Heat exchanger

Also Published As

Publication number Publication date
WO1983004090A1 (en) 1983-11-24
JPS59500877A (ja) 1984-05-17
EP0109393A1 (de) 1984-05-30
EP0109393A4 (de) 1984-09-19
DE3276959D1 (en) 1987-09-17

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