EP1712864A1 - Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters - Google Patents

Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters Download PDF

Info

Publication number
EP1712864A1
EP1712864A1 EP05252306A EP05252306A EP1712864A1 EP 1712864 A1 EP1712864 A1 EP 1712864A1 EP 05252306 A EP05252306 A EP 05252306A EP 05252306 A EP05252306 A EP 05252306A EP 1712864 A1 EP1712864 A1 EP 1712864A1
Authority
EP
European Patent Office
Prior art keywords
strip
spacer
tubes
passages
apertures
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Withdrawn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
EP05252306A
Other languages
English (en)
French (fr)
Inventor
Tim Cowell
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP05252306A priority Critical patent/EP1712864A1/de
Publication of EP1712864A1 publication Critical patent/EP1712864A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight the conduits having a non-circular 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
    • F28F2240/00—Spacing means

Definitions

  • the present invention relates to a heat exchanger and more specifically to a spacer for a heat exchanger as well as to a method of forming a spacer and a method of forming a heat exchanger using the spacer.
  • a typical heat exchanger comprises a plurality of spaced parallel tubes having internal passageways for the flow of a refrigerant, the tubes being separated by ribs or gaps through which air or another fluid to be heated or cooled can pass.
  • the ends of the tubes are usually connected to a header to provide a common inlet or outlet for the tubes.
  • a particular problem area for high pressure heat exchangers required for use with CO 2 refrigerant is the manifolding of the heat exchanger tubes and the sealing of the ends of the heat exchanger tubes to the headers.
  • a spacer for spacing, and providing a flow path between, adjacent tubes of a heat exchanger, said spacer comprising a folded strip of deformable material, said spacer having at least one aperture extending therethrough.
  • a method of forming a spacer for spacing and providing a flow path between adjacent ends of parallel tubes of a heat exchanger comprising providing an elongate strip of deformable material, forming a plurality of apertures in said strip, and folding the strip about one or more transverse fold lines such that the apertures are aligned or substantially aligned to form a continuous flow path.
  • a heat exchanger is formed from a plurality of elongate extruded tubes having a plurality of micro-bores defining flow paths for a coolant, such as CO 2 .
  • a coolant such as CO 2 .
  • Each tube 1 as shown in Fig. 1, is provided with a plurality of parallel micro-bores 2 extending therethrough from one end of the tube to the other.
  • the tube is rigid and provides a high burst strength and the micro-bores can withstand high pressures without requiring large wall thicknesses or other reinforcement.
  • the tubes 1 are longer than the required operating length of the heat exchanger to enable the ends of the tubes to form part of the inlet and outlet headers as will be explained below.
  • An oval aperture 4 (although other shapes are envisaged) is formed adjacent each end of the tube in a direction normal to the micro-bores 2, cutting through the micro-bores to define a manifold distributing flow between the micro-bores, as can be seen in Fig. 1.
  • the ends 3 of the micro-bores 2 may be closed by a closure cap 5, as shown in Fig. 2, or may be closed by brazing, welding or by crushing the ends of the tube.
  • the ends of the tube 1 may be folded into a serpentine bend to close off the ends of the micro-bores 2.
  • a heat exchanger can formed by bonding the ends of the tubes 1 to intermediate spacers located between the ends of adjacent tubes 1 to form a stacked array of parallel, spaced apart tubes 1, such spacers having apertures which are aligned with the apertures 4 in the tubes 1, such that the tubes 1 are located in spaced apart parallel relationship with gaps therebetween to permit the flow of air or another fluid therethrough.
  • the apertures 4 in the ends of the tubes 1 and the apertures in the spacers define inlet and outlet headers by means of which a refrigerant can be supplied to the heat exchanger, as will be explained in more detail below.
  • the ends of the thus formed headers can be closed by bonding caps thereto or by omitting apertures 4 from the outermost tubes 1.
  • each spacer is formed from a strip of sheet metal 10, such as steel or more usually aluminium (although it is envisaged that other deformable materials may be used).
  • Apertures 11, 12, corresponding in size to the apertures 4 formed in the tubes 1, are punched or otherwise formed in the strip on either side of a central fold line 13, about which fold line the strip is folded to bring the apertures 11 and 12 into alignment and to form the spacer 15, as shown in Fig. 4.
  • the spacer 15 can be built up to the desired thickness by increasing the number of fold lines and apertures to form a spacer having two, three or more times the thickness of the sheet material from which it is formed.
  • the abutting faces of the strip may be bonded together by welding, brazing or adhesive.
  • all of the micro-bores in the tube 1 are linked via a single aperture 4 to form a single flow path such that the flow of fluid, such as refrigerant, through the tubes 1 is transverse to the flow of air through the heat exchanger (known as crossflow).
  • the efficiency of the heat exchanger can be improved if the flow of fluid through the tubes has at least a component in a direction opposed to the flow of air through the heat exchanger (known as counterflow).
  • the headers must transfer fluid from one micro-bore, or a group of micro-bores, into an adjacent micro-bore, or group of micro-bores.
  • This can be achieved by providing a plurality of spaced apertures extending through the ends of the tube 1 normal to the micro-bores and arranged along a line transverse to the tube and providing means for transferring the fluid from one aperture to an adjacent aperture.
  • the spacer shown in Figs. 5 and 6 can be used.
  • the spacer 30 is formed from a flat strip 20 of sheet metal.
  • Two transverse fold lines 21,22 are defined at equally spaced location on the strip 20. Pairs of spaced apertures 23,24,25,26 are formed in the strip, by piercing or other methods, between each fold line 21,22 and each end of the strip, such apertures 23,24,25,26 corresponding in size and spacing to apertures provided in the ends of the tube 1 (not shown).
  • a single elongated aperture 27 is formed in a central region of the strip 20 between the fold lines 21,22.
  • the strip 20 is folded in serpentine manner about fold lines 21 and 22 such that the apertures 23 and 24 are brought into alignment with apertures 25 and 26, aperture 27 providing a connecting passage between apertures 23,24,25 and 26.
EP05252306A 2005-04-14 2005-04-14 Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters Withdrawn EP1712864A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05252306A EP1712864A1 (de) 2005-04-14 2005-04-14 Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05252306A EP1712864A1 (de) 2005-04-14 2005-04-14 Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters

Publications (1)

Publication Number Publication Date
EP1712864A1 true EP1712864A1 (de) 2006-10-18

Family

ID=34940807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05252306A Withdrawn EP1712864A1 (de) 2005-04-14 2005-04-14 Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters

Country Status (1)

Country Link
EP (1) EP1712864A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106479A1 (de) * 1982-09-10 1984-04-25 Unipart Group Limited Wärmetauscher
DE3810131C1 (en) * 1988-03-25 1989-07-06 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De Heat exchanger
US5638900A (en) * 1995-01-27 1997-06-17 Ail Research, Inc. Heat exchange assembly
EP0826941A2 (de) * 1996-08-31 1998-03-04 Behr GmbH & Co. Rohrblock-Wärmeübertrager
DE19711396A1 (de) * 1997-03-19 1998-09-24 Behr Gmbh & Co Wärmeübertrager
EP0961095A2 (de) * 1998-05-29 1999-12-01 Behr Industrietechnik GmbH & Co. Kühler
FR2852383A1 (fr) * 2003-03-11 2004-09-17 Valeo Thermique Moteur Sa Boite collectrice pour echangeur de chaleur a haute pression et echangeur de chaleur comportant cette boite collectrice
FR2860288A1 (fr) * 2003-09-26 2005-04-01 Valeo Thermique Moteur Sa Element de circuit pour echangeur de chaleur, et echangeur de chaleur ainsi obtenu

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106479A1 (de) * 1982-09-10 1984-04-25 Unipart Group Limited Wärmetauscher
DE3810131C1 (en) * 1988-03-25 1989-07-06 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De Heat exchanger
US5638900A (en) * 1995-01-27 1997-06-17 Ail Research, Inc. Heat exchange assembly
EP0826941A2 (de) * 1996-08-31 1998-03-04 Behr GmbH & Co. Rohrblock-Wärmeübertrager
DE19711396A1 (de) * 1997-03-19 1998-09-24 Behr Gmbh & Co Wärmeübertrager
EP0961095A2 (de) * 1998-05-29 1999-12-01 Behr Industrietechnik GmbH & Co. Kühler
FR2852383A1 (fr) * 2003-03-11 2004-09-17 Valeo Thermique Moteur Sa Boite collectrice pour echangeur de chaleur a haute pression et echangeur de chaleur comportant cette boite collectrice
FR2860288A1 (fr) * 2003-09-26 2005-04-01 Valeo Thermique Moteur Sa Element de circuit pour echangeur de chaleur, et echangeur de chaleur ainsi obtenu

Similar Documents

Publication Publication Date Title
EP2948724B1 (de) Wärmetauschereinheit mit mehreren rohrbündeln und einer verteileranordnung
US7117936B2 (en) Tube for heat exchanger
CN108885075B (zh) 热交换器
EP2810010B1 (de) Mehrfachrohrbündelwärmetauscheranordnung und herstellungsverfahren
JP4122578B2 (ja) 熱交換器
JP4724433B2 (ja) 熱交換器
EP2769163B1 (de) Rippenwärmetauscher mit einem abgeflachten rohr und herstellungsverfahren dafür
US8333088B2 (en) Heat exchanger design for improved performance and manufacturability
CN100509267C (zh) 叠层型多流式热交换器及其制造方法
EP2002195B1 (de) Plattenwärmeaustauscher mit verstärkungsplatten ausserhalb der äussersten wärmetauscherplatten
EP1239252B1 (de) Mehrstromwärmetauscher in Stapelbauweise
CN108885072B (zh) 热交换器
US20160054075A1 (en) Folded tube multiple bank heat exchange unit
US20020153129A1 (en) Integral fin passage heat exchanger
US7044209B2 (en) High pressure manifold
JP2002107004A (ja) 積層型エバポレータ
EP2956728B1 (de) Röhrenwärmetauscher mit mehreren abgeflachten rippen
JP4122670B2 (ja) 熱交換器
CN100487344C (zh) 热交换器
EP2997322B1 (de) Verfahren zur herstellung einer mehrfachverteileranordnung mit internen kommunikationsports
EP1712864A1 (de) Verfahren zur Herstellung eines Wärmetauschers und Abstandshalters
EP1643200A1 (de) Plattenwärmetauscher
JP2009115378A (ja) 熱交換器
JP5525805B2 (ja) 熱交換器
JP4284727B2 (ja) 熱交換器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070705