EP0282148A2 - Turbulator für einen Fahrzeugradiator - Google Patents

Turbulator für einen Fahrzeugradiator Download PDF

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Publication number
EP0282148A2
EP0282148A2 EP88300449A EP88300449A EP0282148A2 EP 0282148 A2 EP0282148 A2 EP 0282148A2 EP 88300449 A EP88300449 A EP 88300449A EP 88300449 A EP88300449 A EP 88300449A EP 0282148 A2 EP0282148 A2 EP 0282148A2
Authority
EP
European Patent Office
Prior art keywords
turbulator
tube
tubes
radiator
elongate
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.)
Withdrawn
Application number
EP88300449A
Other languages
English (en)
French (fr)
Other versions
EP0282148A3 (de
Inventor
Barry Roger Michael Barnett
Frederick William Ballard
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.)
TRW United Carr Ltd
Original Assignee
TRW United Carr 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
Application filed by TRW United Carr Ltd filed Critical TRW United Carr Ltd
Publication of EP0282148A2 publication Critical patent/EP0282148A2/de
Publication of EP0282148A3 publication Critical patent/EP0282148A3/de
Withdrawn legal-status Critical Current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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • the present invention is concerned with a turbulator for a vehicle radiator tube which is adapted to enhance the turbulence of water flowing through the tube.
  • a turbulator for a tubed vehicle radiator comprising an elongate element adapted to be inserted into a tube of the radiator and provide with flow deflecting vane means orientated to enhance turbulence in coolant flowing through the tube, said turbulator further comprising means for retaining the elongate element in position in the tube, which position retaining means comprises a locking device at a leading end of the elongate element which locking device is insertable through the tube but adapted to resist withdrawal of the turbulator from the tube.
  • the locking device may comprise two resilient tongues adapted to spring outwardly and lock behind one end of the tube.
  • the position retaining means may comprise lug means extending transversely of the elongate element at the trailing end thereof to limit insertion of the elongate element through the tube.
  • the turbulator may comprise at least two said elongate elements adapted to be inserted into respective generally parallel tubes of the radiator, wherein said elongate elements are interconnected at their trailing ends to prevent rotation of the elongate elements in the tubes in which they are inserted in use.
  • lug means are provided as aforesaid the elongate elements may be interconnected at their lug means.
  • the elongate element is in the form of a substantially flat strip having two opposed major faces, and said vane means extend outwardly from said faces.
  • the vane means preferably comprise a plurality of vanes each of which is generally in the shape of a segment of an ellipse having a convexly curved outer edge and is orientated at an angle to the length of the strip such that said outer edges lie on a cylinder.
  • the vanes form at least one generally spiral arrangement around the flat strip and in a presently preferred embodiment the vanes form two generally spiral arrangements around said flat strip and the strip is provided with side edges each of which is formed with a series of V-notches spaced along the length of the strip between the vanes extending from the two faces of the strip.
  • the invention also provides a turbulator for a vehicle radiator having generally parallel tubes, said turbulator comprising at least two elongate elements adapted to be inserted into respective tubes of the radiator, each elongate element being provided with flow deflecting vane means orientated to enhance turbulence in coolant flowing through the tubes, each elongate element being interconnected at one of its ends only with at least another said elongate element at the corresponding end thereof such that said elongate elements extend generally parallel to each other, whereby when the elongate elements are inserted in the tubes rotation of each element within a tube is prevented by virtue of said interconnection with at least one other elongate element which is inserted in another tube.
  • turbulator preferably the free ends of said elongate elements opposite said interconnected ends thereof are provided with respective locking devices which are insertable through the respective tubes of the radiator but adapted to resist withdrawal of the turbulator from the tube.
  • a vehicle radiator is indicated generally at 10.
  • the vehicle radiator 10 comprises a plurality of radiator tubes 11 joined by end plates 12 and 13, each of which is sealed by an end cap 14 and 15 respectively.
  • the end plates 12 and 13 are cup-­shaped so as to form water reservoirs into which the open ends of the tubes 11 project.
  • Vanes 16 are provided on the tubes 11 to protect the tubes and enhance the heat exchange capability of the radiator.
  • a turbulator is retained in position in each tube.
  • One of the turbulators 20 is shown in Figures 5 to 7 and will now be described in more detail.
  • the turbulator 20 is formed from a synthetic plastics material such as polypropylene and comprises an elongate element, which in the embodiment of Figures 5 to 7 is in the form of a flat strip 21 formed with a plurality of apertures 22 and a plurality of deflecting vanes 23.
  • the width of the strip 21 over a major part of its length is such that it is a close fit within the tube 11, as shown particularly in Figure 2 and will not therefore move transversely within the tube to any significant extent.
  • Each vane 23 extends outwardly generally normally to and from a major face of the strip and is in the shape of a segment of an ellipse, having a convexly curved outer edge 24.
  • the vanes 23 are spaced along the length of the turbulator and arranged alternately on opposite sides of the strip 21.
  • each vane is orientated at an angle of approximately 35° to the longitudinal axis of the strip 21 and adjacent vanes, on opposite sides of the strip, are inclined at approximately 110° to one another.
  • the angle of inclination of the vanes to the length of the strip may be varied to give the required turbulence.
  • the angle of orientation of the vanes is such that the outer edges thereof lie on a cylinder whereby they are able to closely cooperate with the inner cylindrical surface of a tube 11 when inserted therein.
  • An aperture 22 is provided in the strip adjacent and to the same side of each vane so that, as water flows through the tube it is deflected by a vane on one side of the strip through the aperture adjacent the strip and then deflected by the next vane on the opposite side of the strip back through the next adjacent aperture to the first side of the strip and so on.
  • the turbulator thus creates a sinuous flow of water along the length of the tube from side to side of the strip.
  • the leading end of the turbulator 20 is formed with locking means 25 in the form of resilient tongues 26 and 27 which can be compressed to pass through the tube but which then spring outwardly to abut the end of the tube and resist withdrawal of the turbulator from the tube.
  • the trailing end of the turbulator 20 is formed with locating means in the form of two outwardly directed lugs 28 and 29.
  • the lugs 28 and 29 extend outwardly further than the width of the strip 21 and are adapted to locate in slots in an end location cap 30, so as to resist rotation of the turbulator relative to the tube.
  • an end location cap 30 is first fitted onto an end of the tube 11.
  • the end location cap 30 is tubular and adapted to fit onto an end of the tube 11 as a tight friction fit.
  • the cap 30 is made from a resilient plastics material such as polypropylene and is formed with two axially extending expansible webs 31 and 32.
  • the cap 30 is also provided with two diametrically opposed slots 33 and 34. The turbulator is inserted through the cap 30 and the tube 11 until the lugs 28 and 29 locate in the slots 33 and 34.
  • the tongues 26 and 27 are compressed and then spring outwardly to abut the end of the tube and resist withdrawal of the turbulator from the tube.
  • the length of the turbulator is such, in relation to the length of tube 11, that in the assembled position, the lugs 28 and 29 of the turbulator abut the opposite end of the tube 11.
  • the radiator When a turbulator 20 has been mounted in each of the tubes 11, the radiator is filled with water and the reservoirs at each end of the radiator sealed with the closure lids 14 and 15. In use, as water flows along the tubes, it is deflected by alternate vanes from side to side through the strip 21 so that a sinuous movement of water is achieved along the length of each tube. This turbulence in the water flow significantly enhances the heat exchange characteristics and efficiency of the radiator.
  • each tube may be formed with slots to receive the lugs 28 and 29 of the turbulator so as to eliminate the need for the end cap 30.
  • the turbulator may also take other forms than that shown in Figures 5 to 7.
  • a turbulator 40 may comprise a circular section elongate element in the form of a rod 41, and vanes 42, 42a each of which partly encircles the rod 41 so as to form an interrupted spiral around the rod. In use, water is caused to flow around the rod 41 as it passes along the radiator tube thereby increasing the movement and turbulence of the water.
  • Figures 10 and 11 illustrate a further embodiment of the invention, comprising a turbulator 43 having a circular section elongate element in the form of a rod 44, and vanes 45, 45a and 46,46a which are similar to the vanes 42,42a but which are arranged around the rod 44 to form a double spiral.
  • each tube of the radiator may be oval in section as shown in Figure 12 which illustrates a vehicle radiator tube 50 and a turbulator 51 similar to the turbulator 20 except that vanes 52 of the turbulator are shaped so as to fit closely within the oval section tube.
  • Figure 12 illustrates a vehicle radiator tube 50 and a turbulator 51 similar to the turbulator 20 except that vanes 52 of the turbulator are shaped so as to fit closely within the oval section tube.
  • FIG. 13 illustrates a turbulator 60.
  • the turbulator 60 comprises a flat strip 61 which is provided with locking means at each end in the form of tongues 62, 63 and 64, 65, respectively.
  • the turbulator 60 can be inserted either end first into a radiator tube until the tongues at the leading end of the strip snap through the end of the tube. The turbulator is then locked in position by the tongues at each end, which overlap the end of the tube.
  • Figures 14 to 16 show a further embodiment of the invention in which the turbulator 70 comprises more than one elongate element 71 provided with flow directing means 72.
  • the turbulator 70 comprises two elongate elements 71 adapted to be inserted into respective tubes 11 of the radiator which elements 71 are interconnected at one end only such that they extend generally parallel to each other.
  • the turbulator may comprise more than two elements 71, in which case each element 71 would be interconnected at one of its ends only with at least another element 71 at the corresponding end thereof such that all of the elements 71 extend generally parallel to each other.
  • each elongate element 71, the vanes 72 thereon, the locking means 73 at the leading ends of the elements and the lugs 74 at the trailing ends thereof is generally identical to the corresponding parts of the turbulator shown in Figures 10 and 11.
  • the two elements 71 are interconnected at their trailing ends, and more particularly they are interconnected at their lugs 74.
  • additionally the trailing ends of the elements are interconnected by a gating arrangement 75 used in the injection moulding process for manufacturing the turbulator in an integral moulding.
  • Figures 17, 18 and 19A-E illustrate an alternative elongate element and vane arrangement for the previously described turbulators.
  • the elongate element is in the form of a flat strip 80 having two opposed major faces 81, 82.
  • the vanes 83 extend outwardly from these faces 81, 82 and form two generally spiral arrangements around the strip 80.
  • Each vane 83 is generally in the shape of an ellipse having a convexly curved outer edge 84 and is orientated at an angle to the length of the flat strip such that the outer edges lie on a cylinder, as best appreciated from Figures 19A and 19B.
  • the vanes 83 are orientated at 30° to the longitudinal axis 85 of the strip 80. When inserted into a tube 11, the outer edges 84 of the vanes closely cooperate with the tube's inner cylindrical surface.
  • each side edge 86 comprises spaced apart flats 88 parallel to axis 85 at the points of maximum width of the elongate element where adjacent vanes on opposite faces of the strip in the same spiral arrangement are contiguous, and between these flats, slopes 89, 90 inclined with respect to axis 85 forming the V-notches 87.
  • Each slope 89, 90 smoothly merges into a portion of a face of a vane and opposed notches 87 in the side edges 86 are formed between the same pair of vanes.
  • turbulators described above are made from plastics material they are not subject to corrosion. Also it will be understood that they cannot move significantly within the tube once inserted in place, axially, transversely or rotationally and consequently are not liable to vibrate and set up undesirable noise. As they are retained in position in the tube and made of a plastics material the risk of the turbulator damaging the wall of the tube is reduced to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP88300449A 1987-01-21 1988-01-20 Turbulator für einen Fahrzeugradiator Withdrawn EP0282148A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8701255 1987-01-21
GB08701255A GB2200201A (en) 1987-01-21 1987-01-21 Vehicle radiator turbulator

Publications (2)

Publication Number Publication Date
EP0282148A2 true EP0282148A2 (de) 1988-09-14
EP0282148A3 EP0282148A3 (de) 1988-10-26

Family

ID=10610976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88300449A Withdrawn EP0282148A3 (de) 1987-01-21 1988-01-20 Turbulator für einen Fahrzeugradiator

Country Status (2)

Country Link
EP (1) EP0282148A3 (de)
GB (1) GB2200201A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420659U1 (de) * 1994-12-23 1995-02-09 Thermal-Werke, Wärme-, Kälte-, Klimatechnik GmbH, 68766 Hockenheim Heizungswärmetauscher für Kraftfahrzeuge und angepaßter Wasserkasten
DE29709073U1 (de) * 1997-05-23 1997-07-17 Behr GmbH & Co., 70469 Stuttgart Wärmetauscher
US8755682B2 (en) 2012-07-18 2014-06-17 Trebor International Mixing header for fluid heater
JP2017090412A (ja) * 2015-11-17 2017-05-25 川崎重工業株式会社 冷却管ユニットの製造方法、管内整流具、冷却管、及び、管内整流具の固定構造

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN184672B (de) * 1993-05-07 2000-09-23 Envirecon Serv Ltd
DE19547185A1 (de) * 1995-12-16 1997-06-19 Behr Gmbh & Co Wärmeübertrager
KR101400833B1 (ko) 2012-12-26 2014-05-29 주식회사 경동나비엔 핀-튜브 방식의 열교환기

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1606739A (en) * 1922-08-30 1926-11-16 Superheater Co Ltd Heat-transferring device
US1989340A (en) * 1932-10-18 1935-01-29 Allan T Shepherd Apparatus for recovering heat from waste water
US2691991A (en) * 1950-08-30 1954-10-19 Gen Motors Corp Heat exchange device
FR2070042A1 (de) * 1969-12-31 1971-09-10 Chausson Usines Sa
FR2244149A1 (en) * 1973-09-18 1975-04-11 Ferodo Sa Helical static agitator for heat exchanger tube - has strip of material formed into helix with an O.D. less than tube I.D.
FR2248481A1 (en) * 1973-10-20 1975-05-16 Sueddeutsche Kuehler Behr Turbulence insert for heat exchanger tubes - has inserts connected together at one end by L-, U-, or grid shaped web

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB748562A (en) * 1952-07-08 1956-05-02 Andre Georges Vandevelde Improvements in and relating to tubular heat-exchangers
GB846672A (en) * 1958-05-12 1960-08-31 Andre Georges Vandevelde Device for heat exchange between fluids
GB899785A (en) * 1960-10-28 1962-06-27 Andre Vandevelde Turbulence generating element for heat exchangers
FR1476593A (fr) * 1965-10-29 1967-04-14 Fives Penhoet élément tubulaire échangeur de chaleur
FR2123195B1 (de) * 1971-01-28 1973-12-07 Chausson Usines Sa
FR2397617A1 (fr) * 1977-07-13 1979-02-09 Ferodo Sa Turbulateur pour tube d'echangeur de chaleur, notamment de radiateur de vehicule automobile
HU187016B (en) * 1983-02-01 1985-10-28 Energiagazdalkodasi Intezet Device for improving the heat-transfer coefficient of viscous liquids flowing in the tubes of heat exchangers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1606739A (en) * 1922-08-30 1926-11-16 Superheater Co Ltd Heat-transferring device
US1989340A (en) * 1932-10-18 1935-01-29 Allan T Shepherd Apparatus for recovering heat from waste water
US2691991A (en) * 1950-08-30 1954-10-19 Gen Motors Corp Heat exchange device
FR2070042A1 (de) * 1969-12-31 1971-09-10 Chausson Usines Sa
FR2244149A1 (en) * 1973-09-18 1975-04-11 Ferodo Sa Helical static agitator for heat exchanger tube - has strip of material formed into helix with an O.D. less than tube I.D.
FR2248481A1 (en) * 1973-10-20 1975-05-16 Sueddeutsche Kuehler Behr Turbulence insert for heat exchanger tubes - has inserts connected together at one end by L-, U-, or grid shaped web

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420659U1 (de) * 1994-12-23 1995-02-09 Thermal-Werke, Wärme-, Kälte-, Klimatechnik GmbH, 68766 Hockenheim Heizungswärmetauscher für Kraftfahrzeuge und angepaßter Wasserkasten
DE29709073U1 (de) * 1997-05-23 1997-07-17 Behr GmbH & Co., 70469 Stuttgart Wärmetauscher
US8755682B2 (en) 2012-07-18 2014-06-17 Trebor International Mixing header for fluid heater
JP2017090412A (ja) * 2015-11-17 2017-05-25 川崎重工業株式会社 冷却管ユニットの製造方法、管内整流具、冷却管、及び、管内整流具の固定構造

Also Published As

Publication number Publication date
GB2200201A (en) 1988-07-27
EP0282148A3 (de) 1988-10-26
GB8701255D0 (en) 1987-02-25

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