EP1369657A1 - Heizelement und radiator - Google Patents

Heizelement und radiator Download PDF

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Publication number
EP1369657A1
EP1369657A1 EP02012204A EP02012204A EP1369657A1 EP 1369657 A1 EP1369657 A1 EP 1369657A1 EP 02012204 A EP02012204 A EP 02012204A EP 02012204 A EP02012204 A EP 02012204A EP 1369657 A1 EP1369657 A1 EP 1369657A1
Authority
EP
European Patent Office
Prior art keywords
radiating element
longitudinal axis
tubular member
central portion
closing
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Withdrawn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
EP02012204A
Other languages
English (en)
French (fr)
Inventor
Maurizio Ariotti
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.)
VALMEX SpA
Original Assignee
VALMEX SpA
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 VALMEX SpA filed Critical VALMEX SpA
Priority to EP02012204A priority Critical patent/EP1369657A1/de
Publication of EP1369657A1 publication Critical patent/EP1369657A1/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Withdrawn legal-status Critical Current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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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
    • F28D1/0308—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 the conduits being formed by paired plates touching each other
    • F28D1/0325—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 the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members

Definitions

  • the present invention relates to a radiating element, to a radiator comprising at least one radiating element, and to a method of producing the radiating element.
  • the present invention may be used to advantage for cooling the cooling fluid of a vehicle, in particular a motor vehicle, engine, to which the following description refers purely by way of example.
  • a radiator comprising a number of superimposed radiating elements, each of which is formed from a flattened tubular member and has permanently deformed end portions to define, at each end portion, two facing, substantially flat walls projecting with respect to an undeformed central portion of the radiating element; and each wall is placed in contact with, and normally soldered to, at least one wall of an adjacent radiating element.
  • Each wall has a hole to define, in the radiator, two end manifolds communicating with respective cooling fluid inlet and outlet fittings.
  • the end portions are closed by plugging members force-fitted inside the respective open ends.
  • Such a solution is disadvantageous in terms of cost and storage by requiring additional manufacture of the plugging members - which must be sized according to the end cross sections of the radiating elements - and by requiring high-precision equipment for inserting the plugging members inside the respective ends.
  • a first object of the present invention is to provide a radiating element for radiators as claimed in Claim 1.
  • a second object of the present invention is to provide a method of producing a radiating element for radiators as claimed in Claim 4.
  • a third object of the present invention is to provide a radiator as claimed in Claim 9.
  • Number 1 in Figure 1 indicates as a whole a radiator for cooling the cooling fluid of a vehicle, in particular a motor vehicle, engine.
  • Radiator 1 comprises a number of superimposed radiating elements 2; two parallel, facing guard plates 3 on opposite sides of radiating elements 2; a water inlet fitting 4 fitted to a top plate 3a; two water outlet fittings 5 at the opposite end to inlet fitting 4 and fitted to top plate 3a and a bottom plate 3b respectively; and anchoring pins 6 connected integrally to plates 3 for assembly to a supporting structure (not shown) .
  • Each radiating element 2 extends along a longitudinal axis 7, and comprises a central portion 8, and two end portions 9 at opposite ends of central portion 8.
  • each end portion 9 is formed by permanent deformation of a respective end portion of a flattened tubular member 10 (Figure 3), and comprises two parallel, facing, substantially flat walls 11, and a closed end 12.
  • Each wall 11 is placed in contact with a respective wall 11 of an adjacent radiating element 2, or with a portion of a plate 3, and projects with respect to central portion 8; and, in the gaps between central portions 8 of adjacent radiating elements 2, or between central portions 8 and plates 3, undulated sheet metal strips 13 are inserted to improve heat exchange.
  • Each wall 11 is soldered or welded, and preferably though not necessarily projection welded, to the adjacent wall 11 or adjacent plate 3.
  • Walls 11 have respective through holes 14 which, when walls 11 are soldered to one another, define at end portions 9 respective end manifolds 15 (only one shown), a first of which has one end communicating with fitting 4 and one end closed by bottom plate 3b, and a second of which has two ends communicating with respective fittings 5.
  • Each pair of adjacent radiating elements 2 has an aligning and connecting device 16 for assembling radiating elements 2 one on top of the other in a given relative position, in particular with holes 14 substantially coaxial with each other.
  • aligning and connecting device 16 comprises two annular collars 18 (only one shown in Figure 1) located at respective end portions 9 of radiating element 2a, and each of which projects from a bottom wall 11a of a respective end portion 9 and extends along the edge of a hole 14a formed in bottom wall 11a; and two holes 14b, each of which is formed through a top wall 11b of a respective end portion 9 of radiating element 2b, and is of such a cross section as to house relative annular collar 18 with relatively little slack.
  • Radiating element 2 adjacent to bottom plate 3b preferably has no annular collars 18.
  • Figure 3 shows a first step in a method of producing radiating element 2 and radiator 1, and wherein a flattened tubular member 10 with open ends and of given length is prepared, and, as shown in Figure 4, is provided with end portions 9 by means of permanent deformation by two forming punches 19, while central portion 8 is left undeformed.
  • Forming punches 19 move in opposite directions along a path coincident with longitudinal axis 7, and are inserted inside respective open ends of each tubular member 10, which is held in position by a known supporting device not shown.
  • each tubular member 10 is provided, at each end portion 9 and in walls 11a and 11b, with respective holes 14a and 14b, which are coaxial along an axis 7a crosswise to longitudinal axis 7, have different cross sections, and are formed by a pair of cutting punches 20 also of different sizes and moving in opposite directions along a path crosswise to longitudinal axis 7. More specifically, hole 14a has a smaller cross section than hole 14b.
  • hole 14a is then widened and provided along the edge with annular collar 18 projecting from wall 11a.
  • This is done by means of an edging punch 21, which is moved along a path crosswise to longitudinal axis 7, is inserted through hole 14b, and is fed forward so as to interfere with the edge of hole 14a and so widen hole 14a and simultaneously form, by permanent deformation of wall 11a, annular collar 18 projecting from wall 11a.
  • ends 12 of end portions 9 are closed by permanent deformation, by compressing ends 12 between two pressure members 22 moving in opposite directions along a path crosswise to longitudinal axis 7.
  • each end portion 9 is inserted, at the closing step, in a die (not shown) from which end 12 projects.
  • the step of closing each end 12 by permanent deformation of end 12 is performed by two closing punches 23, which are located on opposite sides of longitudinal axis 7, move in the same direction parallel to longitudinal axis 7, and have respective contoured profiles to close relative end 12 gradually by compression.
  • each end 12 may then be folded onto itself or towards central portion 8. This has the twofold advantage, on the one hand, of reinforcing closure of end 12 and, on the other, of reducing the longitudinal dimension of radiating element 2.
  • a number of radiating elements 2 are then placed one on top of the other by inserting annular collars 18 inside respective holes 14b to align and connect each radiating element 2 to the adjacent radiating element 2.
  • each end 12 is also preferably, though not necessarily, soldered or welded - in particular, projection welded.
  • Closing ends 12 of end portions 9 by permanent deformation is definitely advantageous by speeding up the production cycle and simplifying storage by eliminating the need for storing separate plugging members, thus reducing cost.
  • the radiating element and radiator described and illustrated herein may be used for cooling various types of fluid, and changes may be made without, however, departing from the scope of the present invention.

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  • 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)
EP02012204A 2002-06-03 2002-06-03 Heizelement und radiator Withdrawn EP1369657A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02012204A EP1369657A1 (de) 2002-06-03 2002-06-03 Heizelement und radiator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02012204A EP1369657A1 (de) 2002-06-03 2002-06-03 Heizelement und radiator

Publications (1)

Publication Number Publication Date
EP1369657A1 true EP1369657A1 (de) 2003-12-10

Family

ID=29433097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012204A Withdrawn EP1369657A1 (de) 2002-06-03 2002-06-03 Heizelement und radiator

Country Status (1)

Country Link
EP (1) EP1369657A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653079A (de) *
EP0692691A1 (de) * 1994-07-12 1996-01-17 Valeo Engine Cooling AB Wärmetauscher mit gestapelten Flachrohren und Verfahren zu seiner Herstellung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE653079A (de) *
EP0692691A1 (de) * 1994-07-12 1996-01-17 Valeo Engine Cooling AB Wärmetauscher mit gestapelten Flachrohren und Verfahren zu seiner Herstellung

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