EP1977184A1 - Echangeur de chaleur muni d'un element de connexion - Google Patents

Echangeur de chaleur muni d'un element de connexion

Info

Publication number
EP1977184A1
EP1977184A1 EP07712052A EP07712052A EP1977184A1 EP 1977184 A1 EP1977184 A1 EP 1977184A1 EP 07712052 A EP07712052 A EP 07712052A EP 07712052 A EP07712052 A EP 07712052A EP 1977184 A1 EP1977184 A1 EP 1977184A1
Authority
EP
European Patent Office
Prior art keywords
connection element
end portion
fuel
presents
exchanger according
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Withdrawn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
EP07712052A
Other languages
German (de)
English (en)
Inventor
Roberto Defilippi
Franco Colosimo
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.)
SumiRiko Italy SpA
Original Assignee
Dayco Fluid Technologies 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 Dayco Fluid Technologies SpA filed Critical Dayco Fluid Technologies SpA
Publication of EP1977184A1 publication Critical patent/EP1977184A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/143—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element placed around the male part before crimping or rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
    • 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
    • F28D1/0477—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 being bent in a serpentine or zig-zag
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a heat exchanger for a return branch of a fuel feeding circuit in a diesel engine .
  • a return circuit conveys back towards the tank of a motor vehicle the fuel in excess not injected in the combustion chamber and generally comprises a heat exchanger situated upstream of the tank to cool the fuel which is generally at high temperature when it leaves the engine.
  • a heat exchanger presenting an inlet and an outlet defined by respective metallic tubular portions having larger diameters than those of the conduits used in the return circuit, the heat exchanger must be equipped with appropriate connection elements.
  • FIG. 1 is a frontal view of a heat exchanger according to the present invention.
  • figure 2 is a cross-section of figure 1 taken along line II-II in figure 1 ;
  • figure 3 is an axial cross-section of an end portion of the exchanger in figure 1; and
  • - figures 4 and 5 are axial cross-sections of respective variants of the end portion in figure 3.
  • BEST MODE FOR CARRYING OUT THE INVENTION In figure 1, number 1 schematically shows a heat exchanger for a fuel return circuit in a diesel engine.
  • the return circuit fluidically connects the engine to a tank of the vehicle (not shown) and conveys back towards the tank the fuel which is not injected into the combustion chamber.
  • the heat exchanger 1 presents a radiating body 2 made of metallic material and integrally comprising an alternating sequence of elbow conduits 3 and of straight conduits 4, each of which presents a side wall 5 of essentially constant thickness and a passage section 6.
  • the elbow conduits 3 present an essentially circular passage section 6 while the shape of the passage section 6 of the straight conduits 4 presents recesses defined by longitudinal protrusions 7 of the side wall 5 sunken towards the axis of the respective straight conduit 4 and adapted to cooperate with the fuel through the radiating body 2.
  • the protrusions On the external surface of the side wall 5 the protrusions define respective grooves 8 forming a "cloverleaf" profile of the passage section itself (figure 2) .
  • the protrusions 7 may be either straight or helical. They may also be made by plastic deformation from a circular section tube, for example by caulking with longitudinal blades.
  • the grooves 7 improve the efficiency of the heat exchanger. Furthermore, the diameter D of the circumference which surrounds the passage section 6 of the exchanger 1 (figure 2) is higher than the diameter of the tubes of the return circuits in order to maintain low loss of load.
  • the exchanger 1 also comprises a tubular outlet portion 9 integral with the last straight conduit 4 and a connection element 10 for connecting the tubular outlet portion 9 to a return circuit conduit.
  • the outlet tubular portion 9 presents an external diameter externally equal to the diameter D compatibly with the caulking process for making the grooves 7.
  • the connection element 10 (figure 3) defines a through hole 11 having an axis A and is made by moulding a polymeric material with glass fillers. For example, either a PA12 or a PA66 both filled at 30% for withstanding high temperatures may be used.
  • connection element 10 comprises a cylindrical body 12 rigidly connected within the tubular outlet portion 9, and a tubular portion 13 protruding from the cylindrical body 12 in axial direction and having an external diameter smaller than the external diameter of the tubular outlet portion 9.
  • the tubular portion 13 is fluid-tightly connected to a conduit of the return circuit according to various connection typologies.
  • the cylindrical body 12 comprises a connection portion 14 contained within the tubular outlet portion 9 and a flange 15 in radial relief with respect to the connection portion 14.
  • the connection portion 14 defines a pair of seats 17 accommodating respective o-rings 18 radially compressed against the tubular outlet portion 9 to define fluid-tightness.
  • the o-rings 18 are made respectively of fluorosilicone and fluorocarbon to withstand chemical attacks of diesel fuel and the high thermal excursion characteristic of a diesel fuel circuit.
  • connection portion 14 further defines an annular groove 19 arranged between the seats 17 and the flange 15 and joined to the latter.
  • the annular groove 19 presents a tapered side 19a having a profile converging towards the flange 15 and a side 19b joined to the flange 15 and defining an axial abutment to axially lock an end portion 16 of the tubular outlet portion 9.
  • connection element 10 is inserted in the tubular outlet portion 9 and arranged abuttingly against the side 19b.
  • connection element 10 is connected simply to the exchanger by cold plastic deformation, and is of simple and cost-effective construction.
  • the radiating body 2 and the connection element 10 constitute an exchanger which presents extremely reduced manufacturing and assembly times thanks to the fact that the number of components is low.
  • the radiating body 2 provided with protrusions 7 is made by plastic deformation of a tube section and therefore presents a high efficiency and further reduced machining and assembly times. It is finally apparent that changes and variations can be made to the exchanger 1 described and illustrated without departing from the scope of protection of the accompanying claims.
  • the tubular element 13 may be shaped to be connected according to various methods to a conduit.
  • a quick- coupling connection may be envisaged by means of a flange 20 carried in an intermediate region of the tubular element 13.
  • Figure 4 shows a connection element 10' in which a single seat 17 is provided for an o-ring 18 either made of fluorocarbon or fluorosilicone .
  • the tubular element 13 presents a cylindrical portion 21 and a rounded or ogive-shaped portion 22.
  • Figure 5 shows a connection element 10'' in which the tubular element defines a reversed pine-tree profile.
  • the connection element 10 may also be mounted in an input tubular portion 9a integral with the first straight conduit 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un échangeur de chaleur pour un circuit de retour de combustible dans un moteur diesel conçu pour connecter le moteur à un réservoir d'un véhicule à moteur, comportant un corps de refroidissement (2) pour échanger de la chaleur avec le combustible et au moins une partie d'extrémité métallique (9) conçue pour être traversée par le combustible dirigé vers le réservoir, et comportant également un élément de connexion (10) connecté de manière rigide et étanche au fluide sur la partie d'extrémité métallique (9) et conçu pour être connecté sur un conduit du circuit de retour par le biais d'une partie tubulaire (13) ayant un diamètre externe inférieur au diamètre externe de l'élément tubulaire métallique (9). La partie d'extrémité métallique (9) définit un rétrécissement effectué par déformation plastique à des fins de connexion sur l'élément de connexion (10) et l'élément de connexion (10) est réalisé par le moulage d'un matériau polymère.
EP07712052A 2006-01-19 2007-01-19 Echangeur de chaleur muni d'un element de connexion Withdrawn EP1977184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000037A ITTO20060037A1 (it) 2006-01-19 2006-01-19 Scambiatore di calore provvisto di un elemento di connessione
PCT/EP2007/050515 WO2007082921A1 (fr) 2006-01-19 2007-01-19 Echangeur de chaleur muni d'un element de connexion

Publications (1)

Publication Number Publication Date
EP1977184A1 true EP1977184A1 (fr) 2008-10-08

Family

ID=36950175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07712052A Withdrawn EP1977184A1 (fr) 2006-01-19 2007-01-19 Echangeur de chaleur muni d'un element de connexion

Country Status (4)

Country Link
EP (1) EP1977184A1 (fr)
CN (1) CN101371096A (fr)
IT (1) ITTO20060037A1 (fr)
WO (1) WO2007082921A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20080403A1 (it) * 2008-05-27 2009-11-28 Dayco Fluid Technologies Spa Raccordo e gruppo di adduzione per un circuito di aria condizionata
IT1391195B1 (it) * 2008-08-06 2011-11-18 Dayco Fluid Technologies Spa Gruppo di adduzione per un circuito di aria condizionata e relativo metodo di realizzazione
US8261445B2 (en) * 2009-11-23 2012-09-11 International Controls And Measurements Corp. Aluminum tube-aluminum fin baseboard radiator
DE102010028117A1 (de) * 2010-04-22 2011-10-27 Krones Ag Verbindungselement für Röhrenwärmetauscher
CN101852570B (zh) * 2010-05-21 2012-06-20 谭仲禧 热交换器的管道连接结构
US20140041635A1 (en) * 2012-08-09 2014-02-13 GM Global Technology Operations LLC Fuel rail connector
BR112018069956B1 (pt) 2016-04-01 2022-07-12 Evapco, Inc Trocador de calor evaporativo para arrefecer ou condensar um fluido de processo
CN109073331A (zh) * 2016-04-01 2018-12-21 艾威普科公司 用于空气蒸发式换热器的多腔管
CN110274507A (zh) * 2019-06-18 2019-09-24 衢州佰强新材料科技有限公司 一种可完全消除热应力的换热器
US20220307454A1 (en) * 2021-03-26 2022-09-29 Robert Bosch Gmbh Fitting for a Fluid Delivery System

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1307592A (en) * 1991-03-22 1992-09-24 Evan Robert Davies Improvements in or relating to methods of and/or apparatus for forming joints
FR2726884B1 (fr) * 1994-11-10 1996-12-20 Hutchinson Procede et dispositif d'assemblage d'un attenuateur de bruit dans un flexible hydraulique
DE19707827C2 (de) * 1997-02-25 1999-04-01 Geberit Technik Ag Pressverbindung
DE10025707A1 (de) * 2000-05-26 2001-11-29 Degussa Mehrschichtiges, verstärktes Kunststoffanbindungselement mit antistatischen Eigenschaften
US6419278B1 (en) * 2000-05-31 2002-07-16 Dana Corporation Automotive hose coupling
US20030230894A1 (en) * 2002-06-13 2003-12-18 Cleveland Rafael L. Brazeless connector for fluid transfer assemblies
US7516990B2 (en) * 2003-05-15 2009-04-14 Mueller Industries, Inc. Fluid conduit system and fittings therefor
ITTO20030724A1 (it) * 2003-09-19 2005-03-20 Dayco Fuel Man Spa Dispositivo di raffreddamento per un circuito di riciclo di carburante da un sistema di iniezione a un serbatoio di un autoveicolo

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007082921A1 *

Also Published As

Publication number Publication date
WO2007082921A1 (fr) 2007-07-26
CN101371096A (zh) 2009-02-18
ITTO20060037A1 (it) 2007-07-20

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