Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
  • F02B29/04—Cooling of air intake supply
  • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
• • 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
  • F28D7/16—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 being arranged in parallel spaced relation
  • F28D7/163—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
  • F28D7/1653—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
  • F28D7/1661—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape with particular pattern of flow of the heat exchange media, e.g. change of flow direction
• • 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
  • F28D7/16—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 being arranged in parallel spaced relation
  • F28D7/1684—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 being arranged in parallel spaced relation the conduits having a non-circular cross-section
  • F28D7/1692—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 being arranged in parallel spaced relation the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
  • F02B29/04—Cooling of air intake supply
  • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
  • F02B29/0462—Liquid cooled heat exchangers
• • 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
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
  • F28D2021/0082—Charged air coolers

Definitions

• Heat exchanger particularly for a motor vehicle
• the invention relates to a heat exchanger, in particular for a motor vehicle.
• a preferred field of application of the invention is that of supercharged engines for a motor vehicle, which use a heat exchanger called "charge air cooler” to cool the charge air.
• supercharged or turbocharged heat engines are powered by an underpressure air called "supercharging air” from a compressor or a turbo-compressor.
• This air is at a temperature too high and it is desirable for proper operation of the engine to cool before admission to the engine.
• a charge air cooler is conventionally used.
• This chiller has the function of cooling the supercharging air by heat exchange with another fluid such as outside air or a cooling liquid such as glycol water.
• a heat exchanger comprising a heat exchange bundle mounted in a housing or housing.
• the heat exchange bundle comprises for example a stack of parallel plates or tubes arranged in parallel to transport the first fluid while a second fluid flows between the tubes.
• the casing receiving this heat exchange bundle is generally open at both ends to be connected to fluid distribution boxes: an input box and an output box.
• the circulation of the two fluids is important for the performance of the heat exchanger.
• one of the fluids or the two fluids is circulated through disrupters or turbulators in order to increase the heat exchange surfaces between the two fluids.
• the invention aims to further improve the quality of heat exchange between the two fluids with a smaller footprint.
• the subject of the invention is a heat exchanger between a first fluid and a second fluid, said exchanger comprising:
• a heat exchange bundle for a heat exchange between the first and second fluids, comprising first circulation channels of the first fluid and second circulation channels of the second fluid between said first channels,
• said inlet and outlet manifolds of the first fluid are fixed on a first face of said bundle and are separated by a partition, and said exchanger further comprises an intermediate manifold communicating with said first channels for a "U" circulation; of the first fluid in said first channels, in that
• said exchanger comprises at least one wall fixed on a second face of said beam contiguous to said first face, and said inlet and outlet pipes of the second fluid are arranged on one end of said wall, being separated from each other the other and said exchanger comprises an intermediate compartment communicating with said second channels for a "U" circulation of the second fluid in said second channels, and in that
• said intermediate collecting box and said intermediate compartment are arranged on faces of said beam that are perpendicular to one another.
• the exchanger may further comprise one or more characteristics following, taken separately or in combination:
• said exchanger comprises a common header divided by said partition into two compartments so as to form on the one hand said inlet box and on the other hand said outlet box;
• the inlet manifold and the outlet manifold of the first fluid are made by two separate pieces;
• said bundle comprises a stack of tubes of which at least two tubes are joined, so that the lateral surfaces of said joined tubes lie substantially opposite the separation between said tubes, and that said partition separating said collecting boxes is located substantially vis-à-vis the junction between said joined tubes;
• the intermediate manifold communicating with all of said first channels, is disposed on a third face of said beam opposite to said first face, for the circulation "U" of the first fluid;
• said beam has a generally parallelepipedal general shape with two end faces, two small lateral faces and two large lateral faces, and in that said first face is a small lateral face and said second face is a large lateral face of said beam;
• said exchanger is configured for cooling charge air of an engine of a motor vehicle
• the first fluid is the supercharging air and the second fluid is the brine.
• FIG. 1 represents a side view of a heat exchanger
• FIG. 2 represents an exploded view of the exchanger of FIG. 1
• FIG. 3 is an exploded perspective view of an exchange beam of the exchanger of FIG. 1;
• FIG. 4 is a side view of the beam of FIG. 3, and
• FIG. 5 is a view according to section II of FIG. 4.
• the invention relates to a heat exchanger 1, in particular for cooling the charge air for an engine, such as a diesel engine of a motor vehicle.
• this exchanger is an exchanger called "air-water”, that is to say an exchanger in which the fluids that exchange heat are air and water.
• the water is preferably water from the so-called “low temperature” cooling circuit of said engine; it is typically brine.
• FIG. 1 shows such a heat exchanger 1.
• This exchanger 1 better visible in the exploded perspective view of Figure 2, has a generally parallelepipedal shape.
• the exchanger 1 comprises a heat exchange bundle 3 between the first fluid such as air and the second fluid such as water.
• the heat exchanger comprises a first inlet manifold 5 of the first fluid, in this case air, and a second air outlet manifold 7, to allow the circulation of air in the bundle 3; and an inlet pipe 9 of the second fluid, here water, and a water outlet pipe 11, to allow the circulation of water in the beam 3 by exchanging heat with the air.
• the bundle 3 has a generally parallelepipedal general shape.
• the beam 3 thus has two faces end 3a, 3b, two small side faces 3c, 3d and two large side faces 3e, 3f.
• Each large side face 3e, 3f is contiguous to a small side face 3c, 3d.
• the inlet manifolds 5 and air outlet boxes 7 are attached to a small side face 3c, for example, of the bundle 3.
• These manifolds 5.7 are connected to pipes of a air circuit in which the exchanger 1 is mounted.
• the manifolds 5 and 7 are thus arranged one above the other, separated by a partition 13 visible in FIG. 2.
• the exchanger 1 comprises a sealing means (not shown) between the manifolds and the bundle 3.
• the exchanger 1 also has a sealing means at the of the partition 13 for separating the manifolds 5.7.
• the heat exchange bundle 3 comprises, for example, a stack of parallel tubes 15, 15a, 15b, 15 ', 15 "(FIG. 3) for the flow of air, This stack therefore has two end tubes 15a, 15b in the stacking direction of the tubes 15, and these end tubes 15a, 15b delimit the end faces 3a, 3b of the bundle 3.
• These tubes 15,15a, 15b, 15 ', 15' have for example respectively a generally flattened general shape.
• the tubes 15, 15a, 15b, 15 ', 15' respectively define first air circulation channels which open into the inlet and outlet boxes 7 (see FIGS. 2 and 3). The air is thus introduced into the tubes via the inlet box 5 and is collected at the outlet of the tubes by the outlet box 7.
• Disturbing fins 17, for example of substantially corrugated shape, arranged in these tubes 15, 15a, 15b, 15 ', 15' can be provided to disturb the flow of air and to increase the exchange surface to facilitate heat exchange between air and water through the walls of the tubes 15,15a, 15b, 15 ', 15'.
• the fins 17 may for example be brazed to the tubes 15,15a, 15b, 15 ', 15'. More specifically, in known manner, these fins 17 can be made under the form of corrugated dividers, formed for example from a metal strip which is deformed to form the corrugations. Each corrugated spacer may be arranged to come into respective contact with the inner walls of a tube by the end regions of the corrugations (see FIG. 5).
• the tubes 15, 15a, 15b also define between them second circulation channels for the flow of water.
• the second channels are interposed between the tubes 15, 15a, 15b.
• the beam 3 has an alternating stack of first and second circulation channels.
• disruptors 19 of the water flow can be provided in these second channels.
• Such disrupters 19 are shown partially and schematically in FIGS. 3 and 5.
• These disturbers 19 extend between two tubes, for example over the entire length between two adjacent tubes.
• disturbers 19 have a shape creating turbulence in the flow of water passing through them.
• the disrupters 19 may be made in the form of plates having disturbance patterns or, according to the example illustrated, be in the form of two superposed perforated disturbance plates 19.
• Each plate 19 may be brazed to one of the two adjacent tubes defining a second channel.
• These disturbance plates 19 form spacers between the tubes 15, 15a, 15b and make it possible to increase the exchange surface by disturbing the flow of water. This facilitates heat exchange between air and water through the walls of the tubes.
• the beam 3 comprises an alternating stack of tubes and disrupters 19.
• These two joined tubes 15 ', 15 are for example located substantially in the middle of the stack As is best seen in Figure 5, these two joined tubes 15', 15" delimit a first portion A or first beam half 3, and a second part or half B.
• the first part A extends from an end tube 15a to a joint tube 15 '.
• the second part B extends from the second joint tube 15 "to the opposite end tube 15b.
• the ends of the tubes 15a, 15, 15 'of the first part A open into the outlet manifold 7 air.
• the ends of the tubes 15 ", 15, 15b of the second part B open into the manifold 5.
• the junction between the tubes 15 'and 15" is found substantially vis-à-vis of the partition 13 between the two manifolds 5 and 7.
• This arrangement allows a substantially "U” -circulation of the air in the tubes of the bundle 3.
• the exchanger 1 comprises an intermediate manifold 21 (see Figures 1 and 2) reported on the second small side face 3d opposite the first small side face 3c.
• the latter comprises a sealing means (not shown), such as a seal, between this intermediate collecting box 21 and the bundle 3.
• distribution boxes 5, 7 and 21 are formed together by collectors 23 (FIGS. 2 and 3) and complementary associated covers 25 and 27.
• the two input and output boxes 7 are formed together with a collector 23 and an associated lid 25.
• the lid 25 is formed in one piece and comprises the partition 13 dividing the lid 25 into two compartments, so as to form on the one hand the input box 5 and on the other hand the outlet box 7.
• the manifold 23 is disposed at the end of the assembly of the tubes, at the level of the small lateral face 3c, and allows assembly with the associated cover 25.
• the manifold 23 is formed in one piece and receives a plurality of tube ends from both the first portion A and the second portion B of the tube bundle.
• the manifold 23 has a plurality of orifices 29 for receiving the ends of the tubes 15, 15a, 15b and has a larger orifice 31 for receiving at the same time the ends of the two joined tubes 15 ', 15 ".
• the larger orifice 31 has twice the dimensions of an orifice 29 of a single tube end.
• the two manifolds 5 and 7 can also be made separately with two manifolds 23 and two associated lids.
• the intermediate box 21 is formed together with a collector 23 disposed at the end of the set of tubes, at the level of the small lateral face
• the collector 23 is here identical to the collector 23 of the input and output boxes 5 and 7.
• the cover 27 differs from the cover 25 in that it does not delimit two compartments separated by a partition 13.
• the cover 27 has a shape complementary to the shape of the collector 23 so as to define an air collection chamber in which open the ends of all the tubes.
• the exchanger 1 comprises two lateral walls 33 for closing the beam 3.
• These walls 33 are for example reported on the two large side faces 3e, 3f opposite the beam 3 ( Figure 3). The walls 33 are therefore opposite the lateral surfaces of the stacked tubes of the bundle 3.
• Fixing the walls 33 to the beam 3 may for example be done by soldering.
• the opposite lateral walls 33 are of generally rectangular shape so as to delimit together with the end tubes 15a, 15b an open parallelepiped shape to which the boxes of input 5 and output 7, and secondly the intermediate box 21 for the distribution of air.
• the two walls 33 may respectively have fixing means 34 on the end tubes 15a, 15b.
• the inlet 9 and outlet 11 of the water pipes allow the circulation of water in the beam 3.
• these inlet pipes 9 and outlet 11 are formed on one of the walls 33. More specifically, to allow a flow "U" of water, the two pipes 9,11 are arranged at the level of a first end of a wall 33, being separated from one another.
• the pipes 9, 11 are for example formed near the inlet boxes 5 and outlet 7 of the air.
• the wall 33 may have apertures 35, for example of substantially circular shape, for the entry and the exit, and at the right of this opening 35, a bulge 37 oriented towards the outside of the exchanger 1, as illustrated in Figures 2 and 3.
• This bulge 37 is for example made by stamping.
• the pipes 9 and 11 are respectively connected at the openings 35, and the wall 33 extending between the bulges 37 form a sealed separation between the inlet pipe 9 and outlet 11 (see Figures 3 and 5).
• this separation formed by the wall 33 extending between the two bulges 37 is located substantially vis-à-vis the side surfaces of the two joined tubes 15 'and 15 "(see Figure 5).
• This arrangement allows a substantially "U” circulation of the water.
• the second fluid, here water, introduced into the beam 3 via the inlet pipe 9 circulates in the second channels interposed between the tubes 15a, 15,15 'of the first part A, and the water circulates in the second channels interposed between the tubes 15 ", 15, 15b before exiting via the outlet pipe 11.
• an intermediate compartment 39 which communicates with both the second channels of the first part A with the second channels of the second part B of the beam 3, so as to receive the water having circulated in the first part A, then redistribute it to the second part B for evacuation.
• This intermediate compartment 39 therefore participates in the "U" circulation of the water in the bundle 3.
• the intermediate compartment 39 is arranged on a face of the beam 3 perpendicular to the face 3d on which the intermediate manifold 21 is arranged.
• This particular arrangement allows the double "U” circulation of the two fluids.
• this intermediate compartment 39 is located on the same wall 33 as the inlet and outlet pipes 9 and 11, but at the opposite end.
• this compartment 39 is for example in the form of a bulge of a wall 33, similarly to the bulges 37 to receive the inlet pipes 9 and output 11.
• This bulge is for example made by stamping. Furthermore, according to the embodiment described, the two fluids flow against the current. This countercurrent circulation further increases the performance of the heat exchanger 1.
• the air inlet box 5 is substantially in the same plane as the outlet pipe 11 of the water; and the air outlet box 7 is substantially in the same plane as the inlet pipe 9 of the water.
• the air inlet box 5 and the outlet pipe 11 communicate with the second part B of the bundle 3, and the air outlet box 7 and the water inlet pipe 9 communicate with the first part A of beam 3.
• Such an exchanger 1 allowing a flow "U" of both the first fluid and the second fluid, increases the heat exchange surface by extending the flow path of the two fluids.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Geometry (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Details Of Heat-Exchange And Heat-Transfer (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (7)

Families Citing this family (17)

Family Cites Families (28)

• 2011
  • 2011-06-30 FR FR1102057A patent/FR2977306B1/fr not_active Expired - Fee Related
• 2012
  • 2012-06-28 WO PCT/EP2012/062584 patent/WO2013001011A1/fr active Application Filing
  • 2012-06-28 JP JP2014517704A patent/JP6058653B2/ja active Active
  • 2012-06-28 US US14/129,370 patent/US9562466B2/en active Active
  • 2012-06-28 MX MX2014000207A patent/MX340306B/es active IP Right Grant
  • 2012-06-28 EP EP12730955.7A patent/EP2726804B1/de active Active
  • 2012-06-28 CN CN201280032750.6A patent/CN103890524B/zh active Active

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