EP0757928B1 - A method for the manufacture of a heat exchanger, particularly for the manufacture of a condenser for vehicle air-conditioning systems - Google Patents

A method for the manufacture of a heat exchanger, particularly for the manufacture of a condenser for vehicle air-conditioning systems Download PDF

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Publication number
EP0757928B1
EP0757928B1 EP96111912A EP96111912A EP0757928B1 EP 0757928 B1 EP0757928 B1 EP 0757928B1 EP 96111912 A EP96111912 A EP 96111912A EP 96111912 A EP96111912 A EP 96111912A EP 0757928 B1 EP0757928 B1 EP 0757928B1
Authority
EP
European Patent Office
Prior art keywords
tubular element
partitions
distributor
manufacture
tubes
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 - Lifetime
Application number
EP96111912A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0757928A1 (en
Inventor
Maurizio Parrino
Andrea Parola
Luigi Dentis
Vittorio Bassignana
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.)
Denso Thermal Systems SpA
Original Assignee
Magneti Marelli Climatizzazione 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
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Application filed by Magneti Marelli Climatizzazione SpA filed Critical Magneti Marelli Climatizzazione SpA
Publication of EP0757928A1 publication Critical patent/EP0757928A1/en
Application granted granted Critical
Publication of EP0757928B1 publication Critical patent/EP0757928B1/en
Anticipated expiration legal-status Critical
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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
    • F28F9/04—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • 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
    • F28F9/0243—Header boxes having a circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers

Definitions

  • the present invention relates to a method for the manufacture of a heat exchanger, particularly for the manufacture of a condenser for vehicle air-conditioning systems.
  • the invention relates to a method for the manufacture of a heat exchanger including a pair of parallel distributors and a plurality of tubes for the fluid flow extending between the distributors, in which each distributor houses a plurality of partitions which divide the interior of the distributor into a plurality of chambers aligned with each other along the axis of the distributor.
  • Heat exchangers of this type are normally used as condensers in vehicle air-conditioning systems and are known in the art as "parallel-flow" condensers.
  • the partitions are provided within the distributors to create obligatory pathways so that the entire fluid flow passes in succession through various arrays of tubes in succession in its path from the inlet to the outlet of the heat exchanger.
  • the presence of the partitions within the distributors means that the tubes that interconnect the two distributors are divided into a number of sets in series with each other while the tubes in each set are connected in parallel with each other.
  • a first known system for locating the partitions within the distributor starts with two half-shells, each of which is essentially in the form of a tube cut along a plane through its longitudinal axis.
  • the partitions are arranged at predetermined positions in one of the two half-shells and the two half-shells are then welded together along their peripheral line of joining.
  • Another known system for the introduction of the partitions into a distributor starts with a circular-section, extruded tube and forms incisions in the wall of the tube at the points at which the partitions are to be located. The partitions are then introduced into the tube through these cuts which are subsequently closed by welding.
  • US patent 4762152 describes a system in which the partitions are inserted from an open end of the distributor and are slid axially until they reach a predetermined position.
  • the fluid-flow tubes are fixed to integral appendages projecting from the outer surface of the distributor, these being formed by chip-forming machining or plastic deformation.
  • Document FR-A-2 713 114 which is considered to be the closest prior art, discloses a method according to the pre-characterising part of claim 1.
  • the distributor is constituted by a standard extruded or drawn tubular element into which the partitions are inserted from an open end.
  • the partitions are located at predetermined points by being slid along the longitudinal axis of the tubular element.
  • a plurality of apertures is formed in the wall of the tubular element through which the ends of the tubes for the circulation of fluid are inserted.
  • the apertures are formed by upsetting material inwardly of the distributor, without producing swarf so as to form collars which serve to hold the ends of the tubes and to retain the partitions in the axial direction.
  • the method of the invention achieves a considerable reduction in the cost of production of the finished heat exchanger as well as a considerable reduction in the areas of fluid loss. Consequently there is less wastage from the distributor by fluid loss and the heat exchanger is more reliable.
  • a heat exchanger generally indicated 10 comprises, for example, a condenser for a vehicle air-conditioning system, and includes a pair of distributors 12 and 14 arranged parallel to each other.
  • a plurality of tubes 16 extends between the two distributors 12, 14 with their ends communicating with the interiors of the distributors 12, 14.
  • the tubes 16 are fixed to a pack of metal fins 18 so as to form a network for heat exchange between the fluid which circulates within the tubes and the air which flows over the fins 18.
  • the tubes 16 are oblong in cross-section and are fixed to the fins 18 by a mechanical expansion process: that is, the tubes are inserted with clearance within aligned holes in the pack of fins 18 and the mechanical connection between the tubes 16 and the fins 18 is achieved by radial expansion of the tubes by a mechanical expanding process.
  • each distributor 12, 14 comprises a tubular element 20 within which are a plurality of partitions 22 arranged so as to divide the interior of the tubular element 20 into a series of chambers aligned with each other along the longitudinal axis of the distributor.
  • each distributor 12, 14 has two partitions which divide the interior of the tubular element 20 into three chambers indicated 24a, 24b and 24c, in the case of the distributor 12, and 26a, 26b, 26c in the case of the distributor 14.
  • the partitions 22 divide the tubes 16 into sets, indicated 16a, 16b, 16c, 16d and 16e, which are in series with each other with respect to the direction of circulation of the fluid.
  • the tubes in each set are, on the other hand, connected in parallel with each other.
  • the number of tubes in each set reduces progressively from one set to the next in the direction of flow of the fluid since, in the case of a condenser, the fluid enters as a vapour and leaves in the liquid state and, in changing state, reduces substantially in volume.
  • FIG. 3 illustrates how the partitions 22 are inserted into the tubular element 20 from one of its open ends 28 and are slid along the longitudinal axis 30 in the direction indicated by the arrow 32 until they reach a predetermined axial position.
  • Each partition 22 may have a substantially C-shaped cross-section, as illustrated in Figure 3, or may be constituted by a solid disc.
  • the peripheral wall 34 of the partition 22 constitutes a guide as it has sufficient length in the direction of the longitudinal axis 30 to avoid jamming during its sliding movement. This C-shape thus allows a thin sheet (for example 1 mm thick) to be used for the partition.
  • the thickness must be greater (for example 3-4 mm) to give a peripheral bearing surface which is sufficiently thick.
  • Each partition 22 has a peripheral wall 34 which is made to tight tolerances to the diameter of the inner surface 36 of the tubular element 20 and is thrust along the axis 30 by means of a rod 38 until it reaches its final position. Naturally, the partitions which are to be positioned furthest from the open end 28 are inserted first.
  • FIG. 4 illustrates schematically the step in which the incisions are made.
  • the tubular element 20 is held stationary by a suitable tool provided with a series of cutting bits 40 which can be advanced in a direction perpendicular to the longitudinal axis 30 of the tubular element 20.
  • the bits 40 form the incisions and upset the material towards the inside of the tube without producing shavings or swarf, which is particularly important since the presence of the partitions 22 does not allow any swarf to be removed.
  • the apertures 42 may be formed in two or more steps.
  • all the even apertures could be formed in a first step by the advance of their respective bits 40 and then the odd apertures could be formed by the advance of the remaining bits.
  • the bits 40 upset the sheet metal edges towards the interior so as to form collars 43 ( Figure 5) which are shaped and dimensioned so as to house the end portions of the tubes 16.
  • FIG. 5 illustrates the tubular element 20 at the end of the step in which the incisions 42 are made. It will be seen that each partition 22 is housed in the space between two adjacent apertures 42 and is prevented from moving axially in the tubular element 20 by the upset material constituting the collars 43.
  • the ends of the tubes 16 are inserted in the apertures 42 and braze welded around the perimeter of the incisions 42 to connect the tubes 16 firmly to the tubular element 20.
  • an inlet/outlet connector for the fluid is fitted to one end of the tubular element 20 and the opposite end is sealed in known manner.
  • the inlet and outlet connectors for the fluid could be formed in the peripheral wall of the distributor and, in this case, both ends of the distributor would be sealed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP96111912A 1995-08-07 1996-07-24 A method for the manufacture of a heat exchanger, particularly for the manufacture of a condenser for vehicle air-conditioning systems Expired - Lifetime EP0757928B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95TO000673A IT1280900B1 (it) 1995-08-07 1995-08-07 Procedimento per la produzione di uno scambiatore di calore, in particolare per la produzione di un condensatore per sistemi di
ITTO950673 1995-08-07

Publications (2)

Publication Number Publication Date
EP0757928A1 EP0757928A1 (en) 1997-02-12
EP0757928B1 true EP0757928B1 (en) 2001-01-24

Family

ID=11413782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111912A Expired - Lifetime EP0757928B1 (en) 1995-08-07 1996-07-24 A method for the manufacture of a heat exchanger, particularly for the manufacture of a condenser for vehicle air-conditioning systems

Country Status (10)

Country Link
EP (1) EP0757928B1 (pt)
JP (1) JPH09119795A (pt)
CN (1) CN1114815C (pt)
AR (1) AR004504A1 (pt)
BR (1) BR9604065A (pt)
DE (1) DE69611640T2 (pt)
ES (1) ES2155552T3 (pt)
IT (1) IT1280900B1 (pt)
PL (1) PL315538A1 (pt)
TR (1) TR199600651A1 (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743427B4 (de) * 1997-10-01 2007-05-03 Behr Gmbh & Co. Kg Wärmeübertrager
DE19911334A1 (de) 1999-03-15 2000-09-21 Behr Gmbh & Co Sammelrohr für einen Wärmeübertrager und Herstellungsverfahren hierfür
US20090173482A1 (en) * 2008-01-09 2009-07-09 Beamer Henry E Distributor tube subassembly
ITPD20120073A1 (it) * 2012-03-09 2013-09-10 Idrotermica Veneta Zeggio S P A Metodo per la realizzazione di un collettore a piu' settori di ricircolo e di distribuzione per impianti idraulici, e collettore realizzato con tale metodo
CN102735092B (zh) * 2012-06-27 2013-11-06 浙江金宸三普换热器有限公司 一种新型分流结构的平行流换热器
CN103769468B (zh) * 2012-10-19 2016-12-21 张荣伟 一种制作散热接插头的方法及其制品
CN105135753A (zh) * 2015-08-12 2015-12-09 浙江康盛热交换器有限公司 热泵空调用微通道换热器
CN106066102A (zh) * 2016-05-31 2016-11-02 浙江富源制冷设备股份有限公司 一种微通道侧出风冷凝器及其安装方法
JP6850058B2 (ja) * 2016-07-12 2021-03-31 マーレベーアサーマルシステムズジャパン株式会社 コンデンサ
CN107160121A (zh) * 2017-05-09 2017-09-15 柳州申通汽车科技有限公司 汽车冷凝器芯体的加工方法
CN107175464A (zh) * 2017-05-09 2017-09-19 柳州申通汽车科技有限公司 汽车空调冷凝器的加工工艺
CN114623704A (zh) * 2022-03-04 2022-06-14 德帕姆(杭州)泵业科技有限公司 管式换热器
CN114734398B (zh) * 2022-05-07 2023-09-29 阜阳市节能化工工程有限公司 一种酮塔气体冷却器加工后处理装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE326681B (pt) * 1968-12-03 1970-08-03 Olofstroem Ab
FR2538526B1 (fr) * 1982-12-22 1986-12-19 Chausson Usines Sa Plaque collectrice pour echangeur de chaleur a tubes et boites a eau
US4679289A (en) * 1986-08-15 1987-07-14 Brazeway, Inc. Method and apparatus for forming intruded branch attachment structures in tubing
JPH0321665U (pt) * 1989-07-14 1991-03-05
US5193613A (en) * 1992-06-30 1993-03-16 Wallis Bernard J Heat exchanger header tube and method of making
FR2713114B1 (fr) * 1993-12-01 1996-01-19 Valeo Thermique Moteur Sa Perfectionnements à la fabrication d'un échangeur de chaleur en particulier pour véhicules.

Also Published As

Publication number Publication date
CN1114815C (zh) 2003-07-16
BR9604065A (pt) 1999-10-13
DE69611640T2 (de) 2001-05-03
AR004504A1 (es) 1998-12-16
TR199600651A1 (tr) 1997-03-21
ES2155552T3 (es) 2001-05-16
JPH09119795A (ja) 1997-05-06
DE69611640D1 (de) 2001-03-01
ITTO950673A1 (it) 1997-02-07
ITTO950673A0 (it) 1995-08-07
CN1151017A (zh) 1997-06-04
PL315538A1 (en) 1997-02-17
EP0757928A1 (en) 1997-02-12
IT1280900B1 (it) 1998-02-11

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