EP0421955B1 - Water-tube heat exchanger for a motor vehicle air-conditioning system, having a header with a baffle for dividing the flow - Google Patents

Water-tube heat exchanger for a motor vehicle air-conditioning system, having a header with a baffle for dividing the flow Download PDF

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Publication number
EP0421955B1
EP0421955B1 EP90830429A EP90830429A EP0421955B1 EP 0421955 B1 EP0421955 B1 EP 0421955B1 EP 90830429 A EP90830429 A EP 90830429A EP 90830429 A EP90830429 A EP 90830429A EP 0421955 B1 EP0421955 B1 EP 0421955B1
Authority
EP
European Patent Office
Prior art keywords
baffle
liquid
tubes
header
flow
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
EP90830429A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0421955A1 (en
Inventor
Adelio Aimone
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.)
Borletti Climatizzazione SRL
Original Assignee
Borletti Climatizzazione SRL
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 Borletti Climatizzazione SRL filed Critical Borletti Climatizzazione SRL
Publication of EP0421955A1 publication Critical patent/EP0421955A1/en
Application granted granted Critical
Publication of EP0421955B1 publication Critical patent/EP0421955B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • 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
    • F28D1/04—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 tubular conduits
    • F28D1/047—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0475—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
    • 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
    • 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
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets

Definitions

  • the present invention relates to a heat exchanger of the kind defined in the first part of Claim 1.
  • a heat exchanger of this kind is disclosed in FR-A-2,509,447.
  • This known heat exchanger comprises a baffle sealingly interposed between a cover member and a tube plate.
  • the surface of the baffle facing the cover member has a plurality of recesses provided each with a pair of apertures in which there are fitted the end portions of a corresponding pair of tubes.
  • the region comprised between the cover member and each recess of the baffle forms a sealed passage which deflects the flow of the liquid from one tube to the other.
  • the object of the present invention is to provide an exchanger of the type specified at the beginning of the description, which allows the liquid to pass tube-side several times without complications in the structure of the exchanger.
  • an exchanger with water tubes can be formed with three or more "rows" (that is, with sets of finned tubes arranged substantially in three different parallel planes) and a flow-divider, without complications in the assembly of the exchanger, in the arrangement of the baffles or in the positioning of the liquid-inlet and -outlet connectors.
  • a liquid-gas heat exchanger with three rows of water tubes suitable for installation in a motor-vehicle air-conditioning system is generally indicated 10.
  • the exchanger 10 has a finned matrix 10a composed of finned U-shaped tubes arranged between a header 12 and a tube-support frame 14.
  • the header 12 includes a convex cover 16 of polymeric material which has a recessed portion 17 formed with two lateral connectors 16a and 16b for respective connection to inlet and outlet tubes for the liquid, a metal tube plate 18 with a plurality of holes 18a for the passage of the tubes T, and a baffle 20 of polymeric material whose characteristics will become clear from the following description ( Figure 2).
  • the baffle 20 has a flat base portion 20a which faces the tube plate 18 with the interposition of a flat gasket 22 of elastomeric material having a plurality of holes 22a for the passage of the ends of the tubes T, and a substantially L-shaped, flow-dividing portion 20b perpendicular to the base portion 20a.
  • the latter has two series of through-holes 23 and 25 respectively, arranged on opposite sides of the portion 20b of the baffle 20, as well as a plurality of elongate recessed portions 27 with substantially channel-shaped cross-sections arranged in correspondence with adjacent pairs of tubes T in an arrangement which, as shown clearly in Figures 2 and 3, forces the liquid circulating in the tubes in the central plane of the matrix 10a to be conveyed either into other tubes in the central plane (the recesses indicated A in Figures 3 and 5) or into tubes in planes parallel to the central plane of the matrix (the recesses indicated B in Figures 3 and 5).
  • the portion 20b of the baffle 20 has a free edge E which is connected (by pressure or by ultrasonic welding), during the assembly of the exchanger, to the corresponding edge E′ of a central baffle plate 30 formed on the base wall 32 of the cover 16 of the header 12 ( Figure 8).
  • edge E of the portion 20b of the baffle 20 is V-shaped and corresponds in shape to a V-shaped recess formed in the edge E' of the baffle plate 30.
  • the edge of the metal tube plate 18, indicated 18b is folded over a shaped edge 16c of the cover 16 with the interpositon of the edge 22b of the flat gasket 22.
  • the latter is therefore used both to effect a seal between the cover 16 and the tube plate 18 and to effect a seal between the baffle 20 and the tube plate 18 in order to prevent the leakage of liquid between its various passages tube-side ( Figures 2 and 8).
  • the fluid admitted by the connector 16a is forced by the portion 20b of the baffle 20 to pass through the first series of holes 23 and to flow along a first set of U-shaped tubes of the matrix 10a and back again.
  • the liquid is returned thereto by the U-shaped recesses 27 and thus passes twice more through the matrix of finned tubes 10a.
  • the liquid returning from its fourth and last passage through the matrix of tubes flows through the second series of holes 25 and is conveyed to the outlet connector 16b of the exchanger 10 ( Figure 2).

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)
  • Air-Conditioning For Vehicles (AREA)
  • Laminated Bodies (AREA)
EP90830429A 1989-10-06 1990-10-02 Water-tube heat exchanger for a motor vehicle air-conditioning system, having a header with a baffle for dividing the flow Expired - Lifetime EP0421955B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT06785689A IT1237601B (it) 1989-10-06 1989-10-06 Scambiatore di calore a tubi d'acqua per impianti di climatizzazione di autoveicoli con collettore dotato di setto partitore di flusso.
IT6785689 1989-10-06

Publications (2)

Publication Number Publication Date
EP0421955A1 EP0421955A1 (en) 1991-04-10
EP0421955B1 true EP0421955B1 (en) 1994-03-16

Family

ID=11305827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830429A Expired - Lifetime EP0421955B1 (en) 1989-10-06 1990-10-02 Water-tube heat exchanger for a motor vehicle air-conditioning system, having a header with a baffle for dividing the flow

Country Status (4)

Country Link
EP (1) EP0421955B1 (it)
DE (1) DE69007410T2 (it)
ES (1) ES2050415T3 (it)
IT (1) IT1237601B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107174U1 (de) * 1991-06-11 1991-07-25 Behr GmbH & Co, 7000 Stuttgart Wasserkasten für einen Wärmetauscher
US5205347A (en) * 1992-03-31 1993-04-27 Modine Manufacturing Co. High efficiency evaporator
EP0978702A1 (en) * 1998-07-09 2000-02-09 Sierra S.p.A. Device for a heat-exchange terminal with a finned assembly
ITUD20110191A1 (it) * 2011-11-25 2013-05-26 Bruno Pilosio Scambiatore di calore ad alette perfezionato e procedimento di produzione

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782454A (en) * 1972-02-24 1974-01-01 Modine Mfg Co Heat exchanger
JPS5264733A (en) * 1975-11-21 1977-05-28 Hitachi Ltd Evaporator
FR2390692A1 (fr) * 1977-05-13 1978-12-08 Mangeol Charles Echangeur de chaleur, generateur d'eau chaude
ES512122A0 (es) * 1981-07-08 1983-02-16 Sueddeutsche Kuehler Behr "perfeccionamientos en los evaporadores".
FR2573190A1 (fr) * 1984-11-12 1986-05-16 Chausson Usines Sa Evaporateur multitubulaire a boite distributrice rapportee
DE3733866A1 (de) * 1987-10-07 1989-04-27 Sueddeutsche Kuehler Behr Waermetauscher
EP0328414A3 (en) * 1988-02-12 1989-09-27 Acr Heat Transfer Manufacturing Limited Heat exchanger

Also Published As

Publication number Publication date
IT1237601B (it) 1993-06-08
ES2050415T3 (es) 1994-05-16
IT8967856A1 (it) 1991-04-06
DE69007410T2 (de) 1994-07-07
DE69007410D1 (de) 1994-04-21
EP0421955A1 (en) 1991-04-10
IT8967856A0 (it) 1989-10-06

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