EP1515109A2 - Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr - Google Patents

Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr Download PDF

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Publication number
EP1515109A2
EP1515109A2 EP04460018A EP04460018A EP1515109A2 EP 1515109 A2 EP1515109 A2 EP 1515109A2 EP 04460018 A EP04460018 A EP 04460018A EP 04460018 A EP04460018 A EP 04460018A EP 1515109 A2 EP1515109 A2 EP 1515109A2
Authority
EP
European Patent Office
Prior art keywords
header tank
heat exchanger
flat
slots
flat face
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Withdrawn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
EP04460018A
Other languages
English (en)
French (fr)
Other versions
EP1515109A3 (de
Inventor
Marek Filipiak
Robert Racz
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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
Priority claimed from GBGB0321092.9A external-priority patent/GB0321092D0/en
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP04460018A priority Critical patent/EP1515109A3/de
Publication of EP1515109A2 publication Critical patent/EP1515109A2/de
Publication of EP1515109A3 publication Critical patent/EP1515109A3/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Withdrawn legal-status Critical Current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
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the invention relates to a heat exchanger comprising a cooling core consisting of plurality of parallel tubes and cooling fins, and two header tanks fluidly connected with the reciprocal ends of each tube. More particularly the invention relates to an improved header tank of such a heat exchanger and a method of manufacturing thereof.
  • Typical heat exchangers comprise oval or circular header tanks having apertures in which cooling core tubes are inserted. Since tubes remain in contact only with one wall of the tank, the surface of joint is small, which decreases the rigidity of construction of the heat exchanger. Additionally oval or circular header tanks are inefficient in outside packaging, as the heat exchanger having oval header tanks requires more storage space, comparing to heat exchanger having the rectangular header tanks and the same performance.
  • U.S. Pat. No. 5,842,515 discloses a heat exchanger comprising header tanks having a flat bottom portion formed with a plurality of apertures for receiving the plurality of tubes, a pair of vertical walls extending from both side ends of the flat bottom portion and having a plurality of grooves corresponding to the apertures for guiding the tubes, and a pair of connecting portions extending transversely or bulging outward from the vertical walls, that are joined together to form a hollow inner space and to define the outer surface of the header tank.
  • a header tank is relatively complicated due to a number of manufacturing steps.
  • the aim of the present invention is to provide an improved and simple to manufacture header tank for such a heat exchanger.
  • a heat exchanger in which the flat face of a header tank comprises a plurality of slots made by stamping method, wherein each slot has a width corresponding to that of a cooling core tube and comprises grooves having a width going through the thickness of flat walls of the header tank and ending with edges substantially perpendicular to the flat walls of the header tank.
  • the slots are made by lanceting method and comprise overhangs, which additionally increase the surface of contact between the header tank and cooling core tubes.
  • the length of overhangs may be even greater than the width of the slot.
  • the slots have oval shape corresponding to the profile of the cooling core tubes.
  • the header tank has a substantially rectangular cross-section.
  • a header tank of a heat exchanger comprising the steps of:
  • the assembled heat exchanger 1 comprises a cooling core 2 consisting of a plurality of parallel water tubes 3 and cooling fins 4, and two header tanks 5 fluidly connected with the reciprocal ends of each tube 3. After preliminary assembling of the heat exchanger 1, it is placed inside an oven where it undergoes a one shot brazing operation.
  • Fig.2 shows an axonometric, cross-sectional view of one of the two header tanks 5.
  • the header tank 5 was formed from one sheet of aluminium alloy sheet claded with a brazing agent, in process of successive folding.
  • the header tank 5 has a rectangular cross-section profile and comprises a flat face 6 and two flat walls 8 extending perpendicularly from the side ends of the flat face 6.
  • the longitudinal edges of the profile are inclined and after folding form a closing seam 11.
  • the flat face 6 comprises a plurality of equidistantly spaced oval shaped slots 7 for the water tubes 3. Slots 7 were made by a stamping method, as an oval shape with a width "d" going through the thickness "D" of the header tank 5 flat walls 8. The width of each slot corresponds to the widths of the cooling core 2 water tubes 3 and is adjusted so as to receive its ends.
  • the drawing shows the header tank 5 sliced along the longitudinal axis of one of the slots 7, and perpendicularly to the header tank 5 longitudinal axis.
  • Each slot 7 ends with edges 9 that are substantially perpendicular to the flat walls 8 of the header tank 5. That is each slot contains grooves 10 formed in the flat walls 8 of the header tank.
  • the grooves 10 extend vertically from the slots 7 to the some predefined distance and are used to guide the tubes inside the tank.
  • the flanks of the grooves 10 are well-fitted to the oval water tubes 3 shape.
  • Fig. 3 shows the header tank 5, where the water tubes 3 has been already inserted into slots 7 and grooves 10. Owing to the grooves 10 there is the increased surface of junction between the tube 3 and the header tank 5 and thus the joint between the water tube 3 and the header tank 5 is more rigid and the whole construction of the heat exchanger is stronger. Furthermore the edges 9 block the ends of water tubes during preliminary assembling of the heat exchanger. It is therefore assured that each tube 3 shall be inserted into the slot 7 of the header tank flat face on the same distance until it abuts on the corresponding edge 9 of the slot 7.
  • Fig 4 the water tubes shows the header tank 5 with the preliminary assembled water tubes 3 in longitudinal cross-section.
  • the slots were made by a stamping method, thus there are substantially no deformations of the flat wall 6 around the slots 7.
  • Fig 5 shows another embodiment of a header tank, in which the lanceting method was used for creating the slots. This method mixes notching with bulge forming. As a result, a slot rounded with overhangs 12 on the inner side of the tank is formed. Due to the plastic deformation of material, the length of overhangs is approximately equal to the width "D" of the slots 7.
  • the heat exchanger can be a radiator or condenser of a motor vehicle air conditioning system.
  • the method according to the invention is particularly preferred for manufacturing rectangular header tanks, which are of better characteristics than the oval ones.
  • the appropriate pressing, folding and brazing equipment is in common use in radiator plants; the method can easily be implemented and automated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP04460018A 2003-09-10 2004-05-31 Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr Withdrawn EP1515109A3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04460018A EP1515109A3 (de) 2003-09-10 2004-05-31 Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0321092 2003-09-10
GBGB0321092.9A GB0321092D0 (en) 2003-09-10 2003-09-10 Radiator for a motor vehicle
EP04460018A EP1515109A3 (de) 2003-09-10 2004-05-31 Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr

Publications (2)

Publication Number Publication Date
EP1515109A2 true EP1515109A2 (de) 2005-03-16
EP1515109A3 EP1515109A3 (de) 2009-05-06

Family

ID=34466367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04460018A Withdrawn EP1515109A3 (de) 2003-09-10 2004-05-31 Wärmetauscher und Herstellungsverfahren für ein Wärmetauschersammelrohr

Country Status (1)

Country Link
EP (1) EP1515109A3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7331382B2 (en) * 2005-12-10 2008-02-19 Delphi Technologies, Inc. Heat exchanger and a method of manufacturing a heat exchanger manifold
EP1953490A3 (de) * 2007-02-03 2013-07-03 Behr GmbH & Co. KG Sammelkasten und Wärmeübertrager mit einem solchen Sammelkasten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0714008A2 (de) * 1994-11-25 1996-05-29 Behr GmbH & Co. Wärmetauscher mit einem Sammelrohr
US5842515A (en) * 1995-09-30 1998-12-01 Halla Climate Control Corporation Heat exchanger and method of manufacturing header pipe for the same
US20030155109A1 (en) * 2002-02-19 2003-08-21 Masaaki Kawakubo Heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0714008A2 (de) * 1994-11-25 1996-05-29 Behr GmbH & Co. Wärmetauscher mit einem Sammelrohr
US5842515A (en) * 1995-09-30 1998-12-01 Halla Climate Control Corporation Heat exchanger and method of manufacturing header pipe for the same
US20030155109A1 (en) * 2002-02-19 2003-08-21 Masaaki Kawakubo Heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7331382B2 (en) * 2005-12-10 2008-02-19 Delphi Technologies, Inc. Heat exchanger and a method of manufacturing a heat exchanger manifold
KR100920289B1 (ko) * 2005-12-10 2009-10-08 델피 테크놀로지스 인코포레이티드 열교환기 및 열교환기 매니폴드 제조 방법
EP1953490A3 (de) * 2007-02-03 2013-07-03 Behr GmbH & Co. KG Sammelkasten und Wärmeübertrager mit einem solchen Sammelkasten

Also Published As

Publication number Publication date
EP1515109A3 (de) 2009-05-06

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