EP2102576A2 - Échangeur modulaire pour un système de refroidissement automobile - Google Patents

Échangeur modulaire pour un système de refroidissement automobile

Info

Publication number
EP2102576A2
EP2102576A2 EP08702246A EP08702246A EP2102576A2 EP 2102576 A2 EP2102576 A2 EP 2102576A2 EP 08702246 A EP08702246 A EP 08702246A EP 08702246 A EP08702246 A EP 08702246A EP 2102576 A2 EP2102576 A2 EP 2102576A2
Authority
EP
European Patent Office
Prior art keywords
exchanger
modular
plate
fluid
exchange
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.)
Granted
Application number
EP08702246A
Other languages
German (de)
English (en)
Other versions
EP2102576B1 (fr
Inventor
Carlo Tossi
Paolo Mussi
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.)
TI Automotive Cisliano SRL
Original Assignee
TI Automotive Cisliano 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 TI Automotive Cisliano SRL filed Critical TI Automotive Cisliano SRL
Publication of EP2102576A2 publication Critical patent/EP2102576A2/fr
Application granted granted Critical
Publication of EP2102576B1 publication Critical patent/EP2102576B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
    • F28D9/0018—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form without any annular circulation of the heat exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the present invention regards a modular exchanger for an automotive refrigeration system.
  • the automotive industry refrigeration systems comprise a circuit within which the refrigerant flows.
  • Such circuit which in turn comprises a refrigerating exchanger which uses the external air, an expansion valve (lamination) , an evaporator and a compressor.
  • the use of the additional exchanger entails greater space requirements of the system and further piping of the refrigerant.
  • a modular exchanger for an automotive refrigeration system intended for recovering the enthalpy of the operating fluid of the system, which comprises at least an exchanger pack in turn comprising a battery of stacked exchange plates.
  • Each exchange plate has a first surface furrowed by a plurality of parallel grooves, and a second continuous flat surface, opposite to the first, the exchange plates being juxtaposed in a such manner that the grooves of an exchanger plate define with the continuous flat surface of a plate laid over the first, a series of parallel pipes for the circulation of the pressurised operating fluid or low pressure operating fluid.
  • Provided in each of such exchanger plates there are a plurality of first and second openings respectively having the inlet/outlet or fluid passage function.
  • the pipes of each exchange plate are arranged perpendicularly to those of the heat exchanger arranged above or below.
  • Figure 1 is a schematic view of an automotive refrigeration system
  • Figures 2 and 3 are exploded perspective views of a modular exchanger according to the invention
  • Figure 4 is an exploded perspective view of a pack of exchange plates of the modular exchanger according to the invention
  • Figure 5 is a cross-sectional schematic view of an exchanger according to the invention
  • FIG. 6 is an exploded perspective view of an exchanger according to invention integrated to an accumulator
  • Figure 7 is a perspective view of an exchanger according to the invention provided with connections - A -
  • Figures 8a and 8b illustrate, in exploded perspective view, a pack of exchange plates of the modular exchanger respectively according to the initial embodiment and according to a further developed embodiment of the invention.
  • an automotive refrigeration system 1 comprises a circuit 2 within which the refrigerant flows.
  • a low pressure operating fluid Fb carbon dioxide, CO 2
  • Fb low pressure operating fluid
  • CO 2 carbon dioxide
  • the pressurised fluid Fa is expanded and converted into low pressure fluid Fb which removes the enthalpy from the environment to be refrigerated.
  • the circuit 2 comprises a refrigerating exchanger 3 which uses external air to cool the pressurised fluid Fa, downstream of the exchanger 3 the circuit is provided with an expansion valve 4 which provides for the lamination of the pressurised fluid Fa converting it into low pressure fluid Fb.
  • an evaporator 5 which implements the useful effect of the system removing heat from the environment to be refrigerated according to the exchange indicated by arrow C2.
  • the fluid Fb flowing out of the evaporator has two phases in that the evaporation is not complete and some drops of liquid L present are drawn by the vapour V.
  • the fluid might also draw very small amounts of lubricating oil in form of drops.
  • the system comprises an accumulator 6 arranged downstream of the evaporator and upstream of a compressor 7 and having the function of guaranteeing continuous flow of the fluid into the compressor 7.
  • Such modular exchanger 10 is intended for the recovery of the enthalpy of the pressurised operating fluid Fa subsequently transferring it to the low pressure operating fluid Fb in such a manner to complete the evaporation of the fluid Fb.
  • the external air/CO2 exchanger, on the pipes suitably according to the geometries of the system and depending on the components provided.
  • the modular exchanger 10 comprises at least one exchanger pack 11 in turn comprising a battery of stacked exchange plates 20 and it is closed at the ends by a closure plate 12 and a base flange 13 respectively.
  • Each exchange plate of the exchanger pack has a first surface 21 furrowed by a plurality of parallel grooves 22, and a second flat continuous surface 23, opposite to the first.
  • the exchange plates 20 are juxtaposed in such a manner that the grooves 22 of an exchange plate define, cooperating with the continuous flat surface 23 of an overlapped plate, a series of parallel pipes 24 for the circulation of the pressurised operating fluid Fa or low pressure operating fluid Fb.
  • the exchange plates are joined by means of brazing, preferably under vacuum, for air-tight sealing even when subjected to high pressure conditions.
  • the exchanger pack or the overlapped exchanger packs, are fastened between the closure plate 12 and the base flange 13 which are provided with through holes 53, provided correspondingly also on the exchange plates 20, in order to allow fastening by means of bolts or by means of screws inter-engaged in corresponding holes 73 made on the upper portion of the accumulator 6 when the exchanger 10 is made in a manner such to be integrated with the latter.
  • Such through holes 53 have the end 54, opening in the closure plate, widened to accommodate the head of the fastening screw.
  • each of such exchange plates 20 is a plurality of first and second openings 51, 52 respectively having the inlet/outlet function or the function of passing the fluid Fa, Fb.
  • a separation plate 15 provided with openings 51 and 52 and through holes 53 is interposed between the exchanger packs.
  • the first exchange plate 20 of the first pack 11 present in the stack cooperates with the continuous flat surface 23 of the closure plate 12 for the formation of pipes 24 while the first plates of the other exchanger packs arranged below which may be present cooperate with the corresponding continuous flat surfaces 23 of the separation plates.
  • the pressurised fluid Fa and the low pressure fluid Fb circulate without mixing, on alternating exchange plates 20.
  • each exchange plate 20 The pipes 24 of each exchange plate 20 are arranged perpendicularly to the pipes 24 of the exchange plate arranged above and/or below.
  • Each exchange plate thus comprises first openings
  • Such first openings 51 intercept two or more grooves and they are made offset along diametrically opposite edge portions of each exchange plate 20.
  • each exchange plate is correspondingly provided with fourteen second openings 52 intended for the transfer of the fluid between alternating plates.
  • the grooves 22 are made of different lengths in such a manner to keep their ends far apart and thus position the openings 51 or 53 offset distancing them from each other to obtain a greater structural resistance of the plate.
  • the closure plate of the exchanger is also passed through by seats for the refrigerant transfer blocks, respectively a first seat 60 for the inlet of the pressurised refrigerant Fa and a second seat 61 for the outlet of the low pressure refrigerant Fb.
  • the base flange 13 is provided with seats 80 and 83 in which the transfer nozzles are brazed, respectively an Fa fluid outlet nozzle 81 and an Fb fluid inlet nozzle 82, into the exchanger.
  • Such seats 80, 83 open internally in two separated chambers 55 obtained on the surface of the flange 13 and which connect openings 51 52 respectively.
  • Such nozzles 81, 82 can be directly inserted into corresponding holes made in the upper portion of the accumulator which, as required, is provided with seats 70 and 71.
  • each seat is a threaded fastening hole 73 of the blocks to be inserted into the seat or of the end portion of the screws which secure the exchanger against the accumulator.
  • each exchanger pack includes sixteen alternating plates and the modular exchanger 10 has two exchanger packs.
  • both such numbers may vary depending on the preset exchange parameters and the overall dimensions of the system.
  • FIG 8b A further developed and alternative embodiment of the exchanger is illustrated in figure 8b and provides for a different sequence of the plates inside the exchanger packs . While in the embodiment described up to now and also illustrated in figure 8a there is an alternation between a first plate 20' within which the high pressure fluid Fa passes and a second plate 20'' within which a low pressure fluid Fb passes, in the further developed and alternative embodiment, the sequence of the plates is as follows: the second plate 20'' within which the low pressure fluid Fb passes - the first plate 20' - within which the high pressure fluid Fa passes and once again the second plate 20'' within which the low pressure fluid Fb passes; this sequence is repeated until the desired number of plates of the exchanger pack is obtained.
  • each exchanger pack includes fifteen plates arranged following the sequence described beforehand, and in the modular exchanger 10 there are two exchanger packs; both such numbers may vary depending on the preset exchange parameters and the overall dimensions of the system.
  • FIG 7 Illustrated in figure 7 is a different embodiment of the modular exchanger 10 provided for allowing assembly of the modular exchanger and other devices present in the system, at any position in the system, such as for example on the external air/C02 exchanger, on the pipes, in such a manner to be able to position the modular exchanger appropriately suiting its arrangement to the geometries of the system and depending on the components provided.
  • the modular exchanger 10 For such purpose, assembled on the closure plate 12, the modular exchanger 10 bears two first blocks 33 respectively bearing an inlet pipe 30 for the pressurised Fa fluid and an outlet pipe 31 for the low pressure Fb fluid, and in the base flange 13 two second blocks respectively bearing an inlet pipe 90 for the low pressure Fb fluid and an outlet pipe 91 for the pressurised Fa fluid.
  • Such blocks are provided with through holes 62' for fastening, by means of screws, the same against the holes 62 provided on the closure plate 12 and in the base flange 13.
  • the exchanger can effectively be deemed to be a modular component suitably assemblable according to the manner, at the position and on the most convenient component in the referigeration system.

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)

Abstract

L'invention concerne un échangeur modulaire (10) destiné à un système de refroidissement automobile (1) et comprenant au moins un bloc échangeur (11) qui comprend lui-même une batterie de plaques d'échange empilées (20) dont chacune présente une première surface (21) sillonnée par une pluralité de rainures parallèles (22) et une deuxième surface plane continue (23) à l'opposé de la première surface. Les plaques d'échange (20) sont juxtaposées de telle manière que les rainures (22) d'une plaque d'échange définissent, avec la surface plane continue (23) d'une plaque superposée, une série de conduits parallèles (24) pour la circulation du fluide de travail sous pression (Fa) ou à basse pression (Fb). Dans chacune de ces plaques d'échange (20) sont ménagées une pluralité de premières et deuxièmes ouvertures (51, 52) ayant respectivement la fonction d'entrée/sortie ou de traversée du fluide (Fa, Fb). Les rainures parallèles de chaque plaque d'échange (20) sont disposées perpendiculairement aux rainures de la plaque d'échange placée au-dessus et/ou en dessous.
EP08702246.3A 2007-01-15 2008-01-09 Échangeur modulaire pour un système de refroidissement automobile Active EP2102576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000048A ITMI20070048A1 (it) 2007-01-15 2007-01-15 Scambiatore modulare per impianto di refrigerazione automobilistico
PCT/IB2008/000084 WO2008087526A2 (fr) 2007-01-15 2008-01-09 Échangeur modulaire pour un système de refroidissement automobile

Publications (2)

Publication Number Publication Date
EP2102576A2 true EP2102576A2 (fr) 2009-09-23
EP2102576B1 EP2102576B1 (fr) 2017-03-29

Family

ID=39615703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08702246.3A Active EP2102576B1 (fr) 2007-01-15 2008-01-09 Échangeur modulaire pour un système de refroidissement automobile

Country Status (3)

Country Link
EP (1) EP2102576B1 (fr)
IT (1) ITMI20070048A1 (fr)
WO (1) WO2008087526A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636836B2 (en) 2009-02-04 2014-01-28 Purdue Research Foundation Finned heat exchangers for metal hydride storage systems
KR20120042713A (ko) 2009-02-04 2012-05-03 퍼듀 리서치 파운데이션 금속 수소화물 저장 시스템용 코일형 마이크로채널 열교환기
FR3048769B1 (fr) 2016-03-14 2019-05-17 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de fabrication d'au moins un echangeur de chaleur a plaques par superposition de plaques avec motifs d'alignement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3484578B2 (ja) * 1992-09-18 2004-01-06 富士電機ホールディングス株式会社 燃料電池用熱交換器
AU4687799A (en) * 1998-06-19 2000-01-05 Zess Technologies, Inc. Micro-channel heat exchanger
US7343965B2 (en) * 2004-01-20 2008-03-18 Modine Manufacturing Company Brazed plate high pressure heat exchanger
WO2005080901A1 (fr) * 2004-02-24 2005-09-01 Spec Co., Ltd Microechangeur de chaleur pour pile a combustible et procede de fabrication
JP2006125767A (ja) * 2004-10-29 2006-05-18 Tokyo Institute Of Technology 熱交換器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008087526A2 *

Also Published As

Publication number Publication date
EP2102576B1 (fr) 2017-03-29
WO2008087526A3 (fr) 2008-10-23
WO2008087526A2 (fr) 2008-07-24
ITMI20070048A1 (it) 2008-07-16

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