US20070289725A1 - Heat exchanger having a coil and a corrugated tube, cooling circuit, fuel circuit and vehicle comprising such a heat exchanger - Google Patents

Heat exchanger having a coil and a corrugated tube, cooling circuit, fuel circuit and vehicle comprising such a heat exchanger Download PDF

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Publication number
US20070289725A1
US20070289725A1 US11/806,493 US80649307A US2007289725A1 US 20070289725 A1 US20070289725 A1 US 20070289725A1 US 80649307 A US80649307 A US 80649307A US 2007289725 A1 US2007289725 A1 US 2007289725A1
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US
United States
Prior art keywords
heat exchanger
tube
vehicle
circuit
coil
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.)
Abandoned
Application number
US11/806,493
Inventor
Yvon Paquis
Michael Juttel
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.)
Nobel Plastiques SA
Original Assignee
Nobel Plastiques SA
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 Nobel Plastiques SA filed Critical Nobel Plastiques SA
Assigned to NOBEL PLASTIQUES reassignment NOBEL PLASTIQUES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JUTTEL, MICHAEL, PAQUIS, YVON
Publication of US20070289725A1 publication Critical patent/US20070289725A1/en
Abandoned legal-status Critical Current

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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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal 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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
    • 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 suitable for use in particular in a fuel circuit.
  • the invention also concerns a cooling circuit, a fuel circuit and a vehicle comprising such a heat exchanger.
  • a fuel circuit more particularly a diesel circuit, includes a return circuit connecting a member for delivering fuel to the injectors (e.g. a distributor rail) back to the tank for the purpose of returning diesel that has not been injected.
  • the return circuit generally includes a heat exchanger that is arranged to lower the temperature of the diesel from about 125° C. at the distributor member to about 85° C., in particular for the purpose of making it possible to use a tank that is made of polyethylene, which is lighter than a tank made of metal and less expensive than a tank made of polyamide that is better at withstanding high temperatures.
  • the heat exchanger comprises a fuel transport tube that is shaped to form a coil that is positioned under the vehicle in order to be subjected to a flow of air of the kind generated by the vehicle moving.
  • the tube used at present is a smooth metal tube. The cooling that is obtained is effective, but the use of metal makes the heat exchanger relatively heavy.
  • the heat exchanger is thus indeed lighter in weight, but a drop in its cooling performance is observed.
  • the invention provides a heat exchanger comprising a fluid transport tube of thermoplastic material shaped to form a coil, the tube being made of a thermoplastic material and comprising at least one corrugated segment.
  • corrugations makes it possible to increase the heat exchange area between the tube and the surrounding air, and the corrugations disturb the flow of air by creating turbulence therein. These two phenomena encourage heat exchange between the fluid transported by the tube and the air surrounding the tube.
  • the tube has at least one bend portion extending in a corrugated segment.
  • the disposition of the corrugated segment in the bend portion of the tube makes it possible to omit a stage of bending as is necessary with metal tubes or of high temperature forming as is necessary with smooth tubes made of thermoplastic material.
  • the shape of the bend portion is maintained by means of members for fastening the tube to its support.
  • the invention also concerns a cooling circuit and a fuel circuit comprising a heat exchanger having at least one of the previous features.
  • the invention concerns a vehicle comprising a body and such a heat exchanger, wherein the heat exchanger is fixed on the outside of the bodywork.
  • the heat exchanger is submitted to the flow of air resulting from the vehicle movement.
  • the corrugations disturb the flow of air encouraging feat exchange between the transported fluid and the air surrounding the heat exchanger.
  • FIG. 1 is a fragmentary view of a heat exchanger in accordance with the invention
  • FIG. 2 is a detail view of a tube used in making up the heat exchanger.
  • FIG. 3 is a fragmentary longitudinal section view of the tube
  • FIG. 4 is a schematic view of a vehicle fitted with a heat exchanger in accordance with the invention.
  • the heat exchanger of the invention is for installing in a diesel return circuit, of which pipes are represented in chain-dotted lines and given reference 1 in FIG. 1 , and for being secured under the bodywork 2 of a motor vehicle.
  • the heat exchanger in accordance with the invention comprises a tube given overall reference 10 , made up of a succession of smooth segments 11 and of corrugated segments 12 .
  • the tube 10 is made of a thermoplastic material, in this case a polyamide, and more particularly a polyamide 12 . Nevertheless, the tube could be made of other thermoplastic materials, in the form of single layers or of multiple layers.
  • the tube 10 is connected to the return circuit 1 by means of endpieces in the form of teats or Christmas-tree serrations; other connection techniques could naturally be envisaged.
  • the tube 10 is shaped to constitute a coil, so as to present bend portions 13 . These bend portions are shaped in the corrugated portions 12 .
  • Fastener members 14 themselves known and for example of the type commonly referred to as clips, connect the smooth segments 11 to the bodywork 2 of the vehicle. The fastener members 14 serve firstly to hold the tube 10 to the bodywork 2 , and secondly to keep the bend portions 13 in shape.
  • the length of the tube 10 and its coil shape (number of bend portions), and also its disposition on the vehicle, serve to adapt the heat exchange produced by the heat exchanger to the requirements of the application.
  • corrugations could be of a shape other than that shown in the figures, for example they could be helical in shape or they could have a section that is substantially sinusoidal, triangular, squarewave-shaped,
  • the tube that is shaped into coils can be fastened to a plate that serves simultaneously to perform the function of protecting the tube and of performing a deflector function for directing a flow of air against the tube, the tube then extending between the bodywork and the plate.
  • the heat exchanger is for fastening under the body of a vehicle or to any other location in which the heat exchanger will be subjected to a flow of air.
  • the tube may be made up of one or more parts.
  • the invention is not limited to the fuel circuit but also concerns for example cooling circuit mounted on vehicles or other devices.
  • the described circuit can thus be used as a cooling circuit for an other application.

Abstract

A heat exchanger comprising a fluid transport tube shaped to form a coil, the tube being made of a thermoplastic material and comprising at least one corrugated segment.
Cooling circuit, fuel circuit and vehicle comprising such a heat exchanger.

Description

  • The present invention relates to a heat exchanger suitable for use in particular in a fuel circuit. The invention also concerns a cooling circuit, a fuel circuit and a vehicle comprising such a heat exchanger.
    • BACKGROUND OF THE INVENTION
  • A fuel circuit, more particularly a diesel circuit, includes a return circuit connecting a member for delivering fuel to the injectors (e.g. a distributor rail) back to the tank for the purpose of returning diesel that has not been injected. The return circuit generally includes a heat exchanger that is arranged to lower the temperature of the diesel from about 125° C. at the distributor member to about 85° C., in particular for the purpose of making it possible to use a tank that is made of polyethylene, which is lighter than a tank made of metal and less expensive than a tank made of polyamide that is better at withstanding high temperatures.
  • The heat exchanger comprises a fuel transport tube that is shaped to form a coil that is positioned under the vehicle in order to be subjected to a flow of air of the kind generated by the vehicle moving. The tube used at present is a smooth metal tube. The cooling that is obtained is effective, but the use of metal makes the heat exchanger relatively heavy.
  • To obviate that drawback, proposals have been made to replace the metal constituting the tube that is shaped into a coil with a plastics material, and more particularly a polyamide.
  • The heat exchanger is thus indeed lighter in weight, but a drop in its cooling performance is observed.
    • OBJECT OF THE INVENTION
  • It would therefore be advantageous to have a heat exchanger combining the advantages of metal tube coolers with the advantages of thermoplastic material tube coolers.
    • SUMMARY OF THE INVENTION
  • To this end, the invention provides a heat exchanger comprising a fluid transport tube of thermoplastic material shaped to form a coil, the tube being made of a thermoplastic material and comprising at least one corrugated segment.
  • The presence of corrugations makes it possible to increase the heat exchange area between the tube and the surrounding air, and the corrugations disturb the flow of air by creating turbulence therein. These two phenomena encourage heat exchange between the fluid transported by the tube and the air surrounding the tube.
  • Preferably, the tube has at least one bend portion extending in a corrugated segment.
  • The disposition of the corrugated segment in the bend portion of the tube makes it possible to omit a stage of bending as is necessary with metal tubes or of high temperature forming as is necessary with smooth tubes made of thermoplastic material. The shape of the bend portion is maintained by means of members for fastening the tube to its support.
  • The invention also concerns a cooling circuit and a fuel circuit comprising a heat exchanger having at least one of the previous features.
  • Besides, the invention concerns a vehicle comprising a body and such a heat exchanger, wherein the heat exchanger is fixed on the outside of the bodywork.
  • Thus, the heat exchanger is submitted to the flow of air resulting from the vehicle movement. The corrugations disturb the flow of air encouraging feat exchange between the transported fluid and the air surrounding the heat exchanger.
  • Other characteristics and advantages of the invention appear on reading the following description of a particular and non-limiting embodiment of the invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Reference is made to the accompanying drawings, in which:
  • FIG. 1 is a fragmentary view of a heat exchanger in accordance with the invention;
  • FIG. 2 is a detail view of a tube used in making up the heat exchanger; and
  • FIG. 3 is a fragmentary longitudinal section view of the tube;
  • FIG. 4 is a schematic view of a vehicle fitted with a heat exchanger in accordance with the invention.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • The heat exchanger of the invention is for installing in a diesel return circuit, of which pipes are represented in chain-dotted lines and given reference 1 in FIG. 1, and for being secured under the bodywork 2 of a motor vehicle.
  • The heat exchanger in accordance with the invention comprises a tube given overall reference 10, made up of a succession of smooth segments 11 and of corrugated segments 12. The tube 10 is made of a thermoplastic material, in this case a polyamide, and more particularly a polyamide 12. Nevertheless, the tube could be made of other thermoplastic materials, in the form of single layers or of multiple layers.
  • The tube 10 is connected to the return circuit 1 by means of endpieces in the form of teats or Christmas-tree serrations; other connection techniques could naturally be envisaged.
  • The tube 10 is shaped to constitute a coil, so as to present bend portions 13. These bend portions are shaped in the corrugated portions 12. Fastener members 14, themselves known and for example of the type commonly referred to as clips, connect the smooth segments 11 to the bodywork 2 of the vehicle. The fastener members 14 serve firstly to hold the tube 10 to the bodywork 2, and secondly to keep the bend portions 13 in shape.
  • The length of the tube 10 and its coil shape (number of bend portions), and also its disposition on the vehicle, serve to adapt the heat exchange produced by the heat exchanger to the requirements of the application.
  • The corrugations could be of a shape other than that shown in the figures, for example they could be helical in shape or they could have a section that is substantially sinusoidal, triangular, squarewave-shaped,
  • Naturally, the invention is not limited to the embodiment described and variant embodiments could be applied thereto without going beyond the ambit of the invention as defined by the claims.
  • Optionally, it is possible for the tube that is shaped into coils to be fastened to a plate that serves simultaneously to perform the function of protecting the tube and of performing a deflector function for directing a flow of air against the tube, the tube then extending between the bodywork and the plate.
  • By way of example, the heat exchanger is for fastening under the body of a vehicle or to any other location in which the heat exchanger will be subjected to a flow of air.
  • It is also possible to envisage other applications, and in particular static applications, for heating or cooling purposes,.
  • The tube may be made up of one or more parts.
  • The invention is not limited to the fuel circuit but also concerns for example cooling circuit mounted on vehicles or other devices. The described circuit can thus be used as a cooling circuit for an other application.

Claims (8)

1. A heat exchanger comprising a fluid transport tube of thermoplastic material shaped to form a coil, wherein the tube comprises at least one corrugated segment.
2. A heat exchanger according to claim 1, in which the tube includes at least one bend portion extending in a corrugated segment.
3. A heat exchanger according to claim 1, in which the tube comprises a succession of corrugated segments and of smooth segments.
4. A heat exchanger according to claim 3, in which fastener members for fastening the tube to a support are mounted on the smooth segments.
5. Cooling circuit comprising pipes connected to a heat exchanger according to any of the previous claims.
6. Fuel circuit comprising pipes connected to a heat exchanger according to any of claims 1 to 4.
7. Vehicle comprising a bodywork and a heat exchanger according to any of claims 1 to 4, the heat exchanger being fixed on the outside of the bodywork.
8. Vehicle according to claims 7, wherein the heat exchanger is mounted under the bodywork.
US11/806,493 2006-06-01 2007-05-31 Heat exchanger having a coil and a corrugated tube, cooling circuit, fuel circuit and vehicle comprising such a heat exchanger Abandoned US20070289725A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0604890 2006-06-01
FR0604890A FR2901870B1 (en) 2006-06-01 2006-06-01 THERMAL EXCHANGER HAVING A TUBE RING

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US20070289725A1 true US20070289725A1 (en) 2007-12-20

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US (1) US20070289725A1 (en)
EP (1) EP1862753A1 (en)
JP (1) JP2007322121A (en)
FR (1) FR2901870B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055468A1 (en) 2008-11-17 2010-05-20 Industrie Ilpea S.P.A. Refrigeration circuit
US20100139902A1 (en) * 2008-12-05 2010-06-10 Baylis Bobbye K Plastic heat exchanger
US20100192623A1 (en) * 2007-07-16 2010-08-05 Industrie Ilpea S.P.A. Refrigeration circuit
US20110186279A1 (en) * 2010-02-04 2011-08-04 Visteon Global Technologies, Inc. Radiator
DE102012022023A1 (en) * 2012-11-12 2014-05-15 Sew-Eurodrive Gmbh & Co Kg Gearbox with housing part
US20150059322A1 (en) * 2013-08-30 2015-03-05 Continental Automotive Systems, Inc. Liquid cooled reductant delivery unit for automotive selective catalytic reduction systems
US20210140715A1 (en) * 2018-04-19 2021-05-13 Koch Heat Transfer Company, Lp Heat exchanging apparatus and method of supporting tube bundle within heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1035755C2 (en) * 2008-07-25 2010-01-26 Gerke Houwer Heat-exchanger for exchanging heat between two media e.g. gas and liquid, has thin-walled tubes suspended in rack of suspension frame that is provided with hanging part, and harmonica-shaped folds formed along circumference of pipes
CN104596341B (en) * 2013-10-31 2018-04-20 杭州三花微通道换热器有限公司 The bending method of flat tube, heat exchanger and flat tube
KR102319488B1 (en) * 2020-09-28 2021-10-29 주식회사 우성테크원 Copper pipe manufacturing method for system airconditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913573A (en) * 1932-01-11 1933-06-13 John B Turner Radiator
US4132264A (en) * 1974-12-20 1979-01-02 Ecodyne Corporation Plastic heat exchange tube
US5181560A (en) * 1990-10-17 1993-01-26 Burn Mark N Baffleless tube and shell heat exchanger having fluted tubes
US6513576B1 (en) * 1997-12-03 2003-02-04 Nobel Plastiques Air-liquid heat exchanger for a vehicle fluid-flow circuit
US20050051313A1 (en) * 2002-11-19 2005-03-10 Ulrich Grosser Thermoplastic heat exchanger

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JPS57100075U (en) * 1980-12-10 1982-06-19
JPH02133573U (en) * 1989-03-31 1990-11-06
JPH02307622A (en) * 1989-05-19 1990-12-20 Teigu:Kk Manufacture of titanium flexible tube and heat exchanger
JPH09101091A (en) * 1995-08-02 1997-04-15 Higashihara Kogyosho:Kk Heat exchanging pipe
FR2774635B1 (en) * 1998-02-09 2000-04-21 Valeo Thermique Moteur Sa FUEL COOLING DEVICE FOR A MOTOR VEHICLE ENGINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913573A (en) * 1932-01-11 1933-06-13 John B Turner Radiator
US4132264A (en) * 1974-12-20 1979-01-02 Ecodyne Corporation Plastic heat exchange tube
US5181560A (en) * 1990-10-17 1993-01-26 Burn Mark N Baffleless tube and shell heat exchanger having fluted tubes
US6513576B1 (en) * 1997-12-03 2003-02-04 Nobel Plastiques Air-liquid heat exchanger for a vehicle fluid-flow circuit
US20050051313A1 (en) * 2002-11-19 2005-03-10 Ulrich Grosser Thermoplastic heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100192623A1 (en) * 2007-07-16 2010-08-05 Industrie Ilpea S.P.A. Refrigeration circuit
WO2010055468A1 (en) 2008-11-17 2010-05-20 Industrie Ilpea S.P.A. Refrigeration circuit
US20100139902A1 (en) * 2008-12-05 2010-06-10 Baylis Bobbye K Plastic heat exchanger
US20110186279A1 (en) * 2010-02-04 2011-08-04 Visteon Global Technologies, Inc. Radiator
DE102012022023A1 (en) * 2012-11-12 2014-05-15 Sew-Eurodrive Gmbh & Co Kg Gearbox with housing part
DE102012022023B4 (en) 2012-11-12 2022-05-05 Sew-Eurodrive Gmbh & Co Kg Transmission with housing part
US20150059322A1 (en) * 2013-08-30 2015-03-05 Continental Automotive Systems, Inc. Liquid cooled reductant delivery unit for automotive selective catalytic reduction systems
US20210140715A1 (en) * 2018-04-19 2021-05-13 Koch Heat Transfer Company, Lp Heat exchanging apparatus and method of supporting tube bundle within heat exchanger

Also Published As

Publication number Publication date
FR2901870A1 (en) 2007-12-07
JP2007322121A (en) 2007-12-13
FR2901870B1 (en) 2008-08-01
EP1862753A1 (en) 2007-12-05

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AS Assignment

Owner name: NOBEL PLASTIQUES, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PAQUIS, YVON;JUTTEL, MICHAEL;REEL/FRAME:019418/0302

Effective date: 20070510

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION