EP0617249A2 - Wärmetauscher - Google Patents

Wärmetauscher Download PDF

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Publication number
EP0617249A2
EP0617249A2 EP94400628A EP94400628A EP0617249A2 EP 0617249 A2 EP0617249 A2 EP 0617249A2 EP 94400628 A EP94400628 A EP 94400628A EP 94400628 A EP94400628 A EP 94400628A EP 0617249 A2 EP0617249 A2 EP 0617249A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tank
exchanger tubes
tubes
end tank
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.)
Ceased
Application number
EP94400628A
Other languages
English (en)
French (fr)
Other versions
EP0617249A3 (de
Inventor
James Howard Buckley Jr.
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.)
Valeo Climate Control Corp
Original Assignee
Valeo Climate Control Corp
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 Valeo Climate Control Corp filed Critical Valeo Climate Control Corp
Publication of EP0617249A2 publication Critical patent/EP0617249A2/de
Publication of EP0617249A3 publication Critical patent/EP0617249A3/de
Ceased 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F28F9/0217—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions the partitions being separate elements attached to header boxes

Definitions

  • the present invention relates to a heat exchanger of the fin tube type for use, in particular but not exclusively, as an evaporator in an automotive air conditioning system.
  • the heat exchanger tubes are connected, via inlet and outlet manifolds comprising a plurality of tubular connections, to an inlet or outlet for coolant or are connected to U-bends, one or more passages flows for the coolant being defined between inlet and outlet.
  • the heat exchanger tubes can be connected to a connection tank or to an end tank which is provided with an inlet and an outlet for connection to the cooling circuit, and which is internally divided so as to define with the heat exchanger tubes the passage or the circulatory passages of the fluid between a fluid inlet and outlet.
  • the heat exchanger tubes are connected to the end tank by projecting tubular ends provided on the end tank and which are received in end portions of the heat exchanger tubes, an adhesive, or any other curable synthetic material. , being used to seal the connection.
  • a heat exchanger of this type is known by British Patent No. 1601429.
  • a disadvantage of a welded or brazed joint, or of a joint using an adhesive or curable material, is that such joints are liable to leak. Such seals can also be reduced internally or plugged when sealing material enters the tube. When using welding, there are obvious safety risks associated with this technique. The manufacture of these seals is also relatively expensive.
  • the object of the present invention is to provide a heat exchanger whose connections between the end tank and the heat exchanger tubes overcome the above-mentioned difficulties and can be formed easily and efficiently.
  • a heat exchanger comprising: an end reservoir defining in this apparatus a fluid inlet through which, in operation, fluid enters the heat exchanger, and a fluid outlet through which, in operation, fluid exits from the heat exchanger; a plurality of heat exchanger tubes having end portions through which the heat exchanger tubes are connected to said tank end; a plurality of heat exchanger fins connected to the heat exchanger tubes; a plurality of nozzles provided on said end tank defining passages in said end tank, said tips receiving or being received by end portions of respective heat exchanger tubes, to form the connection between said tank end and said heat exchanger tubes; wherein O-rings are provided between said end portions of the heat exchanger tubes and said end pieces to provide a seal between the two, and wherein annular grooves are formed in said end portions of the exchanger tubes or in said ends, grooves in which said O-rings are placed.
  • the above arrangement provides a particularly effective fluid tight connection between the end tank and the heat exchanger tubes, and which is free of solder or adhesive. Another advantage is that the seals can be separated to allow internal cleaning, then reassembled. During assembly, the O-rings are compressed to ensure an effective fluid-tight seal.
  • the tips protrude outward from the end reservoir, and are formed with said annular grooves on the outside.
  • the end portions of the heat exchanger tubes are preferably flared to receive the end pieces.
  • the tips can, as a variant, protrude towards the inside of the end reservoir, the annular grooves being formed inside the tips.
  • said end pieces or end portions heat exchanger tubes which are received in said end portions of the heat exchanger tubes or end fittings are provided with two axially spaced annular grooves in which the respective O-rings are placed, thereby increasing the effectiveness of the seal .
  • the end tank may be a plastic end tank having molded aluminum tips and then fitted thereon.
  • a housing can be provided to slide the assembly consisting of the end tank, heat exchanger tubes, fins and end plate.
  • the housing may include a frame type housing having a base and opposite end faces which engage the end reservoir and the end plate respectively.
  • one or more fixing belts can be provided, extending around the assembly as a whole.
  • the end plate can be arranged so as to support the heat exchanger tubes near the end tank, the connection between the end plate and the end tank being formed by crimping.
  • Figure 1 illustrates a view simplified exploded view of a heat exchanger according to the present invention.
  • the heat exchanger 2 essentially comprises a coil block assembly 4 connected to an end reservoir 6.
  • the coil block assembly 4 comprises a plurality of heat exchanger tubes 8, each in the form of a hairpin, the ends 10 of which are visible in FIG. 1, and one of which is illustrated in the state withdrawn in FIG. 1.
  • a plurality of aluminum heat exchanger fins 12, of conventional shape, are connected to the heat exchanger tubes 8.
  • the heat exchanger tubes are preferably aluminum tubes which are widened by expansion through openings in the fins, to form a hard friction fit in the openings in the fins.
  • An end plate 14, preferably also made of aluminum, is provided on the side of the coil block assembly 4 opposite the end tank 6, in order to support the heat exchanger tubes 8.
  • the end tank 6 is an injection molded plastic tank having a tubular fluid inlet 16 and a fluid outlet 18. In operation, the end tank 6 is connected by an expansion valve 22 to a fluid circuit cooling.
  • the end tank 6 comprises a plurality of internal partitions 24 defining therein a plurality of compartments 26, as can be seen in FIGS. 3 and 4. Passages leading into the compartments 26 of the end tank are defined by openings 27 in one face of the end tank which is provided with tubular end pieces 28 projecting towards the outside.
  • the end pieces 28 are preferably formed of short tubular sections of aluminum or copper, which are machined then molded and attached to the end tank 6, although the end pieces 28 may be made of plastic, individually molded with the end tank 6.
  • the end reservoir 6 is preferably formed according to a "lost core” method, in which a polymer is injected into a mold which has been previously charged with an injection molded core, of low melting metal, which is subsequently melted to give the hollow end tank. This method is particularly suitable for obtaining the relatively complex shape of the interior of the tank.
  • the heat exchanger tubes 8 are provided with flared or "bell-shaped" end portions 10, dimensioned to receive the end pieces 28, as can best be seen in FIG. 5.
  • the end pieces 28 are each formed with a pair of annular grooves 29 axially spaced on their external surface, grooves in which the respective O-rings 30 are placed.
  • the connection between the heat exchanger tubes 8 and the respective end pieces 28 is a greasy fit, the O-rings being compressed in the grooves 29, to thereby form an effective fluid tight seal.
  • end pieces 28 could equally well be dimensioned to receive the end portions 10 of the heat exchanger tubes 8.
  • the end pieces could be designed so as to extend towards the inside of the end tank, the end portions of the heat exchanger tubes being dimensioned to be received in the end pieces, as illustrated in FIG. 7.
  • an end portion 10 ′ a heat exchanger tube 8 ' is received in the end piece 28' projecting inwards.
  • these could be formed on the end portions of the heat exchanger tubes inside these where they receive the tips, or outside when these are received by the tips.
  • the housing comprises a sliding support 32 of frame type comprising a base 34 and end portions' 36, 38 which come into engagement with the end reservoir 6 and the end plate 14 for prevent the heat exchanger tubes 8 from detaching from the end reservoir 6, and an opening 40 through which the heat exchanger is introduced into the support 32.
  • a cover plate 42 of the housing is provided to close the opening 40, and has a tongue 44 for engaging with a groove 46 provided in the support 32.
  • FIG. 6 also illustrates the support as positioned between a housing 48 for a conventional air blower and a housing 50 for supplying air.
  • circumferential tension belts 48 for example made of steel or nylon, can be fixed around the heat exchanger in order to ensure the axial support.
  • the belts 48 are fixed on the end tank at the fixing points 50, and extend around the fins / heat exchanger tubes and the end plate 14 ', while being placed in slots 52 in flanged backs end of the end plate 14 '.
  • an end plate 52 is provided at near the end tank 6, provided with a crenellated edge.
  • the end tank 6 is in this case provided with a raised flange 54 molded in the end tank, the end tank 6 and the heat exchanger assembly being fixed to each other by crimping, as this can best be seen in detail in Figure 9 (b).
  • the heat exchanger just described has the advantages that avoiding welding, or using an adhesive or other curable material results in a more efficient fluid tight connection, in which problems of leakage are reduced and problems of internal obstruction of the passages are avoided.
  • the fact that there is no additional sealing material also facilitates the automation of the mounting process.
  • the connections can also be separated, the end tank 6 being removed from the heat exchanger tubes 8, in order to allow internal cleaning of the tubes and of the tank, while allowing subsequent reassembly.
  • a plastic end tank 6 makes it possible to provide an end tank of narrower section than the conventional arrangement present using a mounting of manifolds and U-bends, allowing better use of space. occupied by the heat exchanger to provide heat exchange surfaces, thereby increasing the efficiency of the heat exchanger.
  • the heat exchanger is placed in the air duct between the air blower housing and the air supply housing by engagement with positioning tabs in the duct.
  • the use of a cassette type housing facilitates the insertion of the heat exchanger, and furthermore eliminates the need to have a sealing material around the heat exchanger, which is generally used to ensure that the entire air flow passes through the heat exchanger.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP94400628A 1993-03-24 1994-03-24 Wärmetauscher. Ceased EP0617249A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36324 1993-03-24
US08/036,324 US5467818A (en) 1993-03-24 1993-03-24 Heat exchanger

Publications (2)

Publication Number Publication Date
EP0617249A2 true EP0617249A2 (de) 1994-09-28
EP0617249A3 EP0617249A3 (de) 1995-04-05

Family

ID=21887958

Family Applications (1)

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EP94400628A Ceased EP0617249A3 (de) 1993-03-24 1994-03-24 Wärmetauscher.

Country Status (2)

Country Link
US (1) US5467818A (de)
EP (1) EP0617249A3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978702A1 (de) * 1998-07-09 2000-02-09 Sierra S.p.A. Wärmeaustauschvorrichtung mit Rippenröhren
CN104279889A (zh) * 2013-07-08 2015-01-14 三星泰科威株式会社 换热器和用于该换热器的壳体

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7641698A (en) * 1998-03-31 1999-10-18 Industria Scambiatori Calore S.P.A. Process for making a fluid-tight connection betweeen a tube and a plate-shaped part
DK79298A (da) * 1998-06-08 1999-12-09 Norsk Hydro As Profil for køling af brændstof, en brændstofledning samt en fremgangsmåde til fremstilling heraf
US6964297B1 (en) 1998-07-14 2005-11-15 L & M Radiator, Inc. Removable tube heat exchanger and header plate
US6357513B1 (en) 1999-01-29 2002-03-19 L&M Radiator, Inc. Support for heat exchanger tubes
US6787116B2 (en) * 2001-05-02 2004-09-07 Aquatherm Industries, Inc. Overmolding insert for heat exchanger, process for manufacturing a heat exchanger, and heat exchanger produced thereby
DE10146258A1 (de) * 2001-09-20 2003-04-17 Behr Gmbh & Co Wärmetauscher und gehäuseartige Halterung für den Wärmetauscher
PT1413845E (pt) * 2002-10-25 2005-10-31 Denso Thermal Systems Spa Condensador para veiculos
JP4180359B2 (ja) * 2002-11-29 2008-11-12 カルソニックカンセイ株式会社 熱交換器
JP5687937B2 (ja) 2010-03-31 2015-03-25 モーディーン・マニュファクチャリング・カンパニーＭｏｄｉｎｅ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏｍｐａｎｙ 熱交換器
EP2696433B1 (de) * 2012-08-08 2015-03-04 MAGNA STEYR Battery Systems GmbH & Co OG Batteriekühlvorrichtung für eine Fahrzeugbatterie
EP2909564B1 (de) * 2012-10-17 2018-12-12 Tetra Laval Holdings & Finance SA Rohrwärmetauscher und vorrichtung zum verschliessen von inneren rohren
CN108844387B (zh) * 2018-08-23 2024-05-24 中山尚诚环保科技有限公司 一种热交换结构及包括它的热交换器
MX2021014950A (es) 2019-06-04 2022-01-24 Baltimore Aircoil Co Inc Intercambiador de calor de membrana tubular.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285740A (en) * 1968-12-13 1972-08-16 Ferodo Sa Improvements in and relating to heat exchangers and air-conditioning apparatus
FR2229032A1 (en) * 1973-05-08 1974-12-06 Pont A Mousson Clamping arrangement for heat exchanger - plate wedges vertical tubes onto tapered nozzles on horizontal headers
FR2261493A1 (de) * 1974-02-18 1975-09-12 Autobrzdy Jablonec Np
FR2350567A1 (fr) * 1976-05-03 1977-12-02 Fives Cail Babcock Echangeur de chaleur a tubes comportant des moyens d'etancheite entre tubes et plaque tubulaire
WO1981000614A1 (en) * 1979-08-15 1981-03-05 W Offutt Modular solar collector system
WO1983003891A1 (en) * 1982-05-04 1983-11-10 Geoffrey Lester Harding Solar energy collector system
EP0285504A1 (de) * 1987-03-25 1988-10-05 Valeo Wärmeaustauscher, insbesondere für die Kühlung der Überverdichtungsluft des Motors eines Kraftfahrzeuges
WO1994017321A1 (en) * 1993-01-21 1994-08-04 Philip Ferdinando Villa Radiator system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2728827B2 (de) * 1977-06-27 1979-05-03 Ford-Werke Ag, 5000 Koeln Wärmetauscher, insbesondere für Kraftfahrzeuge
GB2078361A (en) * 1980-06-24 1982-01-06 Delanair Ltd Heat exchangers and heat exchanger headers
DE3133665C2 (de) * 1981-08-26 1984-06-07 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Verbindung von Rohren eines Wärmetauscherblocks mit einem Anschlußkasten, insbesondere für einen Verdampfer
US4382859A (en) * 1982-01-11 1983-05-10 Litton Industrial Products, Inc. Water conservation and waste water treatment system
DE3936918C2 (de) * 1989-05-24 1994-02-10 Piemontese Radiatori Wärmetauscher, insbesondere für eine Kraftfahrzeugheizung, mit Elementen zum Erzeugen von Turbulenzen in der Strömung eines Wärmetauschers
US5014771A (en) * 1990-09-17 1991-05-14 General Motors Corporation Heat exchanger core reinforcement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285740A (en) * 1968-12-13 1972-08-16 Ferodo Sa Improvements in and relating to heat exchangers and air-conditioning apparatus
FR2229032A1 (en) * 1973-05-08 1974-12-06 Pont A Mousson Clamping arrangement for heat exchanger - plate wedges vertical tubes onto tapered nozzles on horizontal headers
FR2261493A1 (de) * 1974-02-18 1975-09-12 Autobrzdy Jablonec Np
FR2350567A1 (fr) * 1976-05-03 1977-12-02 Fives Cail Babcock Echangeur de chaleur a tubes comportant des moyens d'etancheite entre tubes et plaque tubulaire
WO1981000614A1 (en) * 1979-08-15 1981-03-05 W Offutt Modular solar collector system
WO1983003891A1 (en) * 1982-05-04 1983-11-10 Geoffrey Lester Harding Solar energy collector system
EP0285504A1 (de) * 1987-03-25 1988-10-05 Valeo Wärmeaustauscher, insbesondere für die Kühlung der Überverdichtungsluft des Motors eines Kraftfahrzeuges
WO1994017321A1 (en) * 1993-01-21 1994-08-04 Philip Ferdinando Villa Radiator system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978702A1 (de) * 1998-07-09 2000-02-09 Sierra S.p.A. Wärmeaustauschvorrichtung mit Rippenröhren
CN104279889A (zh) * 2013-07-08 2015-01-14 三星泰科威株式会社 换热器和用于该换热器的壳体

Also Published As

Publication number Publication date
US5467818A (en) 1995-11-21
EP0617249A3 (de) 1995-04-05

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