EP2583046B1 - Échangeur de chaleur de type à plaques, système de refroidissement d'huile, et procédé de refroidissement d'huile - Google Patents

Échangeur de chaleur de type à plaques, système de refroidissement d'huile, et procédé de refroidissement d'huile Download PDF

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Publication number
EP2583046B1
EP2583046B1 EP11796046.8A EP11796046A EP2583046B1 EP 2583046 B1 EP2583046 B1 EP 2583046B1 EP 11796046 A EP11796046 A EP 11796046A EP 2583046 B1 EP2583046 B1 EP 2583046B1
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EP
European Patent Office
Prior art keywords
heat exchanger
oil
holes
degrees
recesses
Prior art date
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Application number
EP11796046.8A
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German (de)
English (en)
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EP2583046A4 (fr
EP2583046A1 (fr
Inventor
Gustaf Von Eckermann
Brice Joly
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Titanx Holding AB
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Titanx Holding AB
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Priority to PL11796046T priority Critical patent/PL2583046T3/pl
Priority to EP12195825.0A priority patent/EP2594885B1/fr
Priority to PL12195825T priority patent/PL2594885T3/pl
Publication of EP2583046A1 publication Critical patent/EP2583046A1/fr
Publication of EP2583046A4 publication Critical patent/EP2583046A4/fr
Application granted granted Critical
Publication of EP2583046B1 publication Critical patent/EP2583046B1/fr
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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
    • 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
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • 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
    • 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
    • F28F3/042—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 local deformations of the element
    • F28F3/044—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 local deformations of the element the deformations being pontual, e.g. dimples
    • 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins
    • 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
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • 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
    • F28D2021/0089—Oil coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
    • 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
    • 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
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • 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
    • 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
    • F28F2275/06—Fastening; Joining by welding
    • 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
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/06—Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections

Definitions

  • the present disclosure relates to heat exchangers, and more particularly to heat exchangers which are suitable for use as oil coolers in heavy vehicles.
  • the disclosure relates particularly to a so-called single flow integrated (SFI) type plate heat exchanger, i.e. a heat exchanger wherein one of the fluid circuits is integrated in the plate bundle and the heat exchanger is essentially immersed in the other fluid circuit, which is typically enclosed by a cavity in which the heat exchanger is mounted.
  • SFI single flow integrated
  • the disclosure is, however also applicable to so-called two (or more) flow integrated heat exchangers, i.e. heat exchangers where all fluid circuits are integrated in the plate bundle, and which thus do not need to be mounted in an enclosed cavity.
  • a heat exchanger for use as an oil cooler in e.g. heavy vehicles may be formed from a plurality of parallel plates, which may be stacked, such that parallel channels are formed between the plates. Typically, every second one is arranged to carry a flow of cooling medium, and the other channels are arranged to carry a flow of heat-emitting medium.
  • the plates may be brazed together to form a single heat-exchanger unit.
  • a single flow integrated type heat exchanger is a heat exchanger which carries one medium inside it, and is essentially immersed in the other medium.
  • the heat exchanger When in use, the heat exchanger is typically arranged in a cavity, through which the cooling medium is caused to flow, while heat-emitting medium is fed through an inlet opening of the heat exchanger, through the channels for the heat-emitting medium, after which the cooled heat-emitting medium is extracted through an outlet opening of the heat exchanger.
  • the channels for the cooling medium are at least partially open to the cavity.
  • JP 2005337528A discloses a heat exchanger making use of protrusions or a circular ridge around the oil channel of an oil cooler for an automobile in order to eliminate the washers otherwise used between the heat exchanger sheets to provide structural integrity of the heat exchanger in the areas which are subjected to an elevated force resulting from the oil pressure.
  • JP 2003097890A and also JP2002 195783 discloses an oil cooler capable of securing pressure-proof strength without using a reinforcement plate.
  • JP 2002267384A discloses a laminated heat exchanger requiring reduced man-hours for handling jigs by dispensing with an exclusively used assembling jig.
  • heat exchangers of the present type it is desirable to increase the efficiency of the heat exchanger, such that more cooling can be achieved with a smaller and/or lighter heat exchanger.
  • a plate type heat exchanger for an oil cooler according to claim 1.
  • the first and second channels are isolated from each other and thus not in communication with each other.
  • Bolts for attaching the heat exchanger to a wall of the cavity in which the heat exchanger is arranged engage a mounting plate at the rear side of the heat exchanger and may be accessible through the through hole.
  • a recess may be provided to accommodate for a protrusion in a wall of the cavity.
  • the second channel may be open from a direction which is parallel with the main plane of the heat exchanger members.
  • the second channel may be open at short ends of the heat exchanger.
  • the heat exchanger members may present a respective through hole or through recess, wherein the through holes or through recesses may be substantially aligned with each other.
  • the through hole or through recess is spaced from all peripheral edges of the heat exchanger member.
  • the "through hole or through recess being spaced from all peripheral edges of the heat exchanger member" effectively means that the medium flowing in the second first channel may flow around the through hole or through recess.
  • An edge defining the through hole or through recess may intersect an edge of the heat exchanger at two respective points of intersection, the through hole or through recess may present a central angle, the legs of which presenting a respective tangent point at the respective point of intersection, and the central angle may be less than about 180 degrees, less than about 135 degrees or less than about 90 degrees.
  • the through hole or through recess may be positioned at an edge portion of the heat exchanger.
  • Heat exchanger plates of two separate heat exchanger members which heat exchanger plates face each other, may present at least one respective protrusion, arranged in the immediate vicinity of the through hole or through recess and/or of an oil port, and the protrusions may abut each other.
  • protrusions provide increased strength while minimizing the negative impact on the heat transfer surface. This may be particularly advantageous when combined with the through holes or through recesses as described above, since additional heat transfer surface will be made available around the oil ports.
  • the heat exchanger plates facing each other may present a plurality of abutting protrusions.
  • At least one of the protrusions may be formed as a ridge.
  • At least two of the protrusions may have different shapes.
  • the abutting protrusions may be joined with each other. Joining may be achieved by e.g. welding, brazing, soldering or glue.
  • the heat exchanger may further comprise a third heat exchanger member, arranged adjacent one of the two heat exchanger members, and having a through hole or through recess which is aligned with the other through holes or through recesses along a normal of a min plane of the heat exchanger, wherein at least one washer may be arranged between the third heat exchanger member and said one of the two heat exchanger members.
  • the heat exchanger may further comprise a mounting flange, which presents a recess positioned so as to receive at least one of the protrusions.
  • a mounting flange may be used with any heat exchanger presenting protrusions, also without the presence of through holes or recesses.
  • the at least two heat exchanger members present a respective through hole or through recess, and the respective through holes or through recesses at least partially overlap each other, thus forming a set of overlapping through holes or through recesses.
  • the heat exchanger further comprises at least one mounting member presenting a mounting hole which may be accessible through the overlapping through holes or through recesses.
  • less than all heat exchanger members of the heat exchanger may present a respective through hole or through recess.
  • a through hole or through recess of one of the heat exchanger members may be smaller than an overlapping through hole or through recess of another one of the heat exchanger members.
  • All heat exchanger members may present a respective through hole or through recess, and the through holes or through recesses may be substantially aligned with each other along a normal of a main plane of the heat exchanger members, thus forming a set of aligned through holes or through recesses.
  • a first set of aligned through holes or through recesses may be arranged at a first angle relative to a longitudinal centre line through a center of an associated first oil port and a first distance from the centre of the first oil port, and a second set of aligned through holes or through recesses may be arranged at a second angle relative to the longitudinal centre line and a second distance from the centre of the first oil port.
  • the first and second distances may be substantially equal.
  • the first and second angles may differ by about 180 degrees. In one alternative, the first and second angles may differ by less than 180 degrees, less than about 135 degrees or less than about 90 degrees. In another alternative, the first and second angles may differ by more than 180 degrees, more than about 225 degrees or more than about 270 degrees.
  • a first set of aligned through holes or through recesses may be arranged on a first side of a longitudinal centre line through centers of oil ports of the heat exchanger and a second set of aligned through holes or through recesses may be arranged on a second side of the longitudinal centre line.
  • a transversal line running through the centers of both sets of aligned through holes or through recesses may be substantially perpendicular to the longitudinal centre line.
  • a transversal line running through the centers of both sets of aligned through holes or through recesses may present an angle of less than about 90 degrees to the centre line, or less than about 75 degrees, or less than about 60 degrees or less than about 45 degrees.
  • a heat exchanger may have multiple pairs of sets of aligned through holes or through recesses, where the transversal line of one pair may be substantially perpendicular to the longitudinal centre line, while transversal line of another pair may present an angle which is less than about 90 degrees to the longitudinal centre line.
  • transversal lines may intersect an oil port.
  • a transversal line may run through the center of an oil port.
  • At least one of the heat exchanger members may present at least two through holes or through recesses providing access from outside the heat exchanger to the second channel.
  • an oil cooling system comprising a cavity having a liquid cooling medium inlet and a liquid cooling medium outlet, an oil inlet for oil to be cooled and an oil outlet for cooled oil, and a heat exchanger, as described above, said heat exchanger being substantially enclosed in said cavity.
  • the second channel may be at least partially formed by the cavity in which the heat exchanger is arranged.
  • a method for cooling oil in a vehicle using an oil cooling system as described above comprising causing oil to be cooled to flow from the oil inlet through the first channel to the oil outlet, and causing liquid cooling medium to flow from the cooling medium inlet through the second channel to the cooling medium outlet.
  • Fig. 1 is a schematic view of a heat exchanger 1 for an oil cooling system.
  • the heat exchanger is intended to be mounted as illustrated in Figs 4a-4b , i.e. substantially longitudinally in a cavity 8, which may be partially formed by an engine block of a vehicle.
  • the heat exchanger 1 has oil ports 3, 4, which are connected by a first channel 12 and coolant openings 5, 6, which allow coolant to flow through respective second channels 7 of the heat exchanger 1.
  • the first and second channels 12, 7 are completely separated, such that fluids passed through them do not contact each other.
  • Each of the first channels 12 is defined by a pair of joined together heat exchanger plates 17, 18 forming a heat exchanger member 10.
  • the heat exchanger plates may be joined together by e.g. welding, brazing, soldering or glue. Edges of the heat exchanger plates may be folded relative to each other as illustrated in Figs 2a-2d . This applies both to peripheral edges and to edges at through holes or through recesses 9, 11 and/or oil ports 3, 4.
  • the heat exchanger 1 may further have mounting flanges 2a, 2b intended for fixating the heat exchanger 1 to a wall of the cavity 8.
  • the mounting flanges 2a, 2b may have holes for oil ports 3, 4 and/or bolt holes 20a, 20b.
  • each oil port 3, 4 there is formed an inlet/outlet channel, which may extend through all heat exchanger members 10 to connect the oil ports 3, 4 to the respective first channels 12.
  • the side of the heat exchanger opposite to the port side (upper side in Fig. 1 ) may be provided with an oil channel cover 3a, 4a, which closes the inlet/outlet channel.
  • the heat exchanger 1 may have through-going holes 9 providing access to the mounting flange 2a, 2b.
  • the diameter of the through-going holes 9 may be larger than the diameter of the associated bolt hole 20a, 20b, such that a fastening device (e.g. a screw, bolt or rivet (not shown)) can be introduced through the through-going hole and allow a head portion of the fastening device to engage the mounting flange 2a, 2b.
  • a fastening device e.g. a screw, bolt or rivet (not shown)
  • protrusions 170, 180 from the heat exchanger plates 17, 18 may be provided around the oil ports 3, 4 and also around the through holes 9.
  • a protrusion 170 of one of the heat exchanger plates 17 of a first heat exchanger member 10 may be aligned with a corresponding protrusion 180 of a heat exchanger plate 18 of a second, adjacent heat exchanger member 10, such that the protrusions 170, 180 contact each other.
  • the protrusions 170, 180 may be joined with each other through e.g. welding, brazing, soldering or glue.
  • Protrusions may be provided by stamping or punching the material forming the heat exchanger members. Alternatively, material may be added to the surface of the heat exchanger member to form the protrusions.
  • Fig. 2a the edges of both the upper plate 17 and the lower plate 18 are folded about 90 degrees, such the edge portions overlap along a thickness direction of the heat exchanger member.
  • the lower plate extends beyond the upper plate, such that the vertical portion of the lower plate 18 is outside the vertical portion of the upper plate 17.
  • the plates are thus joined in a plane which is substantially perpendicular to a main plane of the heat exchanger member.
  • Fig. 2c the edges of both the upper plate 17 and the lower plate 18 are folded about 90 degrees, such the edge portions overlap along a thickness direction of the heat exchanger member.
  • the upper plate 17 extends beyond the lower plate 18, such that the vertical portion of the upper plate 17 is outside the vertical portion of the lower plate 18.
  • the plates are thus joined in a plane which is substantially perpendicular to a main plane of the heat exchanger member.
  • the upper plate 17 is substantially unbent, whereas the lower plate 18 is bent such that a wall extending substantially perpendicular to the main plane of the heat exchanger member is formed entirely of the lower plate 18.
  • the edge of the lower plate 18 is further bent to enclose an edge of the upper plate 17.
  • edge configurations disclosed in Figs 2a-2d may be used for forming peripheral edges of the heat exchanger members, it is also possible to use the edge configurations disclosed in Figs 2a-2d to form edges of a through hole 9 or accommodation recess 11 as described herein. Furthermore, one of the configurations may be used for the peripheral edges while another configuration is used for the through holes and/or for the accommodation recess. It is also possible to use different configurations for the through holes and/or for through holes and accommodation recess.
  • an accommodation recess 11 is provided.
  • the recess is formed by through holes in two uppermost heat exchanger members 10.
  • the through hole of the uppermost heat exchanger member is slightly larger than the through hole of the second-to-uppermost heat exchanger member.
  • through holes forming an accommodation recess may be provided in as many of the heat exchanger members as is necessary to accommodate for e.g. a protrusion in the cavity 8 where the heat exchanger is to be positioned.
  • protrusions 170, 180 are used together with washers 19 at the same set of aligned through holes (access holes, accommodation recesses) or oil ports.
  • a combination of protrusions and washers can be used to optimize e.g. a weight to strength ratio of the heat exchanger by using washers between some pairs of heat exchanger members 10, while protrusions are used between other pairs of heat exchanger members.
  • washers 19 may be used where the forces affecting the heat exchanger members are very large, while protrusions 170, 180 may be used where the heat exchanger members are subjected to less severe forces.
  • washers for more than two adjacent heat exchanger members, while protrusions are used for one or a few of the heat exchanger members.
  • Figs 4a-4b there is illustrated how the freedom in design can be improved by making use of the present disclosure.
  • Bolt holes 9 are provided on both sides of a longitudinal centre line of the heat exchanger 1. However instead of being aligned along a line which is perpendicular to the centre line, the bolt holes 9 are aligned along a line, which present an angle ⁇ different than 90o relative to the longitudinal centre line. The angle may be less than about 80o, less than about 70o, less than about 60o, less than about 50o, less than about 40o, or less than about 30o. At least one oil 3, 4 port may also be aligned on the same line as the bolt holes 9.
  • Figs 4a, 4b there is defined a longitudinal centre line through the centers of the oil ports.
  • Angle ⁇ is thus an absolute angle for the position of each set of aligned through holes.
  • a difference angle ⁇ between the holes may be defined. Where the holes are aligned along a single line through the centre of the oil port, the difference angle ⁇ will be 180 degrees.
  • Fig. 4b there is illustrated an embodiment where the incoming coolant flow Fc arrives at an angle to the longitudinal centre line of the heat exchanger 1, and where the outgoing coolant flow Fc is substantially parallel with the longitudinal centre line.
  • First and second pairs of bolt holes 9 may be provided such that the angle ⁇ at the centre of an oil port, between the lines along which the respective pair of bolt holes 9 are aligned differ between the pairs of bolt holes 9.
  • further such sets of aligned through holes or bolt holes may be provided at a respective oil port, e.g. 3, 4 or 5 sets of through holes or bolt holes.
  • FIGs 5a-5d there are illustrated various protrusion/ridge patterns which may be used in connection with oil ports 3, 4 and/or access holes/accommodation recesses.
  • a first ridge 180' of a first heat exchanger plate 18' may extend in a first direction
  • a second ridge 170' of a second heat exchanger member 17' may extend in a second, different direction.
  • the first and second directions may be substantially mutually perpendicular. However any angle between 0o and 90o may be provided between the ridges of the adjacent heat exchanger members 10.
  • Fig. 7 shows a heat exchanger formed by a plurality of heat exchanger members 10"'a, 10"'b, each of which is formed as a substantially tubular member.
  • Each member may be formed by rolling or folding a piece of sheet metal or by extrusion. In either case, the forming of the tubular member may be followed by a flattening step and/or by insertion of an additional flange structure to increase heat transfer.
  • the heat exchanger may be formed as illustrated by a plurality of identical heat exchanger members.
  • Fig. 8 illustrates an embodiment, wherein the through hole 9' intersects the edge portion of the heat exchanger member 10 IV .
  • the through hole presents a central angle c, the legs of which presenting a respective tangent point which may coincide with the intersection between the respective edge portion an the the hole edge.
  • the central angle may be less than about 180 degrees, less than about 135 degrees or less than about 90 degrees.
  • central is to be seen as the geometric centre where the hole is substantially circular or substantially elliptic, or as the centre of gravity of the through hole where the through hole is asymmetric.
  • Figs 9a-9c schematically illustrate a mounting flange 2', which is adapted for use with the heat exchanger as disclosed herein.
  • the mounting flange presents a port hole 21 extending through the mounting flange 2' for introduction or extraction of the heat emitting medium, or cooling medium, where applicable.
  • the mounting flange 2' also presents one or more recesses 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, which are adapted for receiving a protrusion, which is formed in the heat exchanger plate, in the area covered by the mounting flange 2'.
  • the mounting flange may further comprise one or more fastening holes 22.
  • the mounting flange may be formed of a single plate, wherein the recesses are formed as recesses, which may be provided as blind holes or through holes.
  • the mounting flange 2' is formed of two separate material plates 24, 25, where a first material plate 24 may be formed with only port hole 21 and fastening holes 22, whereas the other plate is formed also with through holes forming the recesses 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h.
  • the material plates forming the mounting flange 2' may be of different materials. For example, one of the materials, e.g. the first plate 24, may be selected for optimum strength, while the other, e.g. the second plate 25, may be selected to fit with the brazing process.

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  • 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)

Claims (12)

  1. Échangeur thermique du type à plaques pour un refroidisseur d'huile, comprenant :
    au moins deux éléments d'échangeur thermique (10) renfermant chacun un premier canal respectif (12);
    un port d'entrée (3) pour alimenter un milieu dans les premiers canaux (12), et
    un port de sortie (4) pour extraire le milieu des premiers canaux (12),
    dans lequel un second canal (7) est formé entre au moins deux éléments d'échangeur thermique (10), un milieu présent dans le second canal (7) étant isolé d'un milieu présent dans les premiers canaux (12), et
    le second canal (7) étant agencé pour communiquer avec un espace dans lequel l'échangeur thermique est renfermé;
    dans lequel chacun d'au moins deux éléments d'échangeur thermique (10) présente un alésage traversant ou un évidement traversant respectif (9,11) espacé de tous les bords périphériques d'au moins deux éléments d'échangeur thermique (10),
    caractérisé en ce que
    les alésages traversants ou les évidements traversants (9,11) s'étendent à partir d'une première face d'un premier élément d'échangeur thermique d'au moins deux éléments d'échangeur thermique (10), à travers les premiers canaux (12), vers une seconde face opposée d'un second élément d'échangeur thermique d'au moins deux éléments d'échangeur thermique (10) et donnant accès de l'extérieur de l'échangeur thermique au second canal (7); et
    en ce que lesdits alésages traversants ou évidements traversants respectifs (9,11) se superposent l'un l'autre au moins partiellement, en formant ainsi un ensemble d'alésages traversants ou d'évidements traversants superposés (9,11); et
    dans lequel l'échangeur thermique du type plaque comprend en outre au moins un élément de montage présentant un trou de montage qui est accessible à travers les alésages traversants ou évidements traversants superposés (9,11).
  2. Échangeur thermique du type à plaques pour un refroidisseur d'huile selon la revendication 1, comprenant en outre un alésage traversant (9'), dans lequel un bord définissant l'alésage traversant ou l'évidement traversant (9') coupe en intersection un bord de l'échangeur thermique à deux points d'intersection respectifs ;
    l'alésage traversant ou l'évidement traversant (9') présente un angle central, dont les bords présentent un point tangent respectif au niveau du point d'intersection respectif, et
    l'angle central est inférieur à environ 135° ou inférieur à environ 90°.
  3. Échangeur thermique selon la revendication 1 ou 2, dans lequel un alésage traversant ou un évidement traversant (9,11) d'un des éléments d'échangeur thermique (10) est plus petit qu'un un alésage traversant ou un évidement traversant superposé (9,11) d'un autre des éléments d'échangeur thermique (10).
  4. Échangeur thermique selon une quelconque des revendications précédentes, dans lequel les alésages traversants ou les évidements traversants (9,11) sont substantiellement alignés les uns avec les autres le long d'une normale d'un plan principal des éléments d'échangeur thermique (10), en formant ainsi un ensemble d'alésages traversants ou d'évidements traversant alignés (9,11).
  5. Échangeur thermique selon la revendication 4, dans lequel
    un premier ensemble d'alésages traversants ou d'évidements traversants alignés (9,11) est agencé à un premier angle par rapport à une ligne centrale longitudinale passant à travers les centres des ports d'huile (3,4) de l'échangeur thermique et une première distance par rapport au centre d'un premier port d'huile (3), et
    un second ensemble d'alésages traversants ou d'évidements traversants alignés (9,11) est agencé à un second angle par rapport à la ligne centrale longitudinale et une seconde distance par rapport au centre du premier port d'huile (3).
  6. Échangeur thermique selon la revendication 5, dans lequel la première et la seconde distance sont substantiellement égales.
  7. Échangeur thermique selon la revendication 5 ou 6, dans lequel le premier et le second angle diffère par : environ 180°, moins de 180°, moins d'environ 135° ou moins d'environ 90° ou plus de 180°, plus d'environ 225° ou plus environ 270°.
  8. Échangeur thermique selon une quelconque des revendications 4-7, dans lequel un premier ensemble d'alésages traversants ou d'évidements traversants alignés (9,11) est agencé sur un premier côté d'une ligne centrale longitudinale passant à travers les centres des ports d'huile (3,4) de l'échangeur thermique et un second ensemble d'alésages traversants ou d'évidements traversant alignés (9,11) est agencée sur un second côté de la ligne centrale longitudinale.
  9. Échangeur thermique selon la revendication 8, dans lequel une ligne transversale passant à travers les centres de deux ensembles d'alésages traversants alignés (9) est substantiellement perpendiculaire à la ligne centrale longitudinale.
  10. Échangeur thermique selon la revendication 8, dans lequel une ligne transversale passant à travers les centres des deux ensembles d'alésages traversants ou d'évidements traversants alignés (9,11) présente un angle inférieur à environ 90° par rapport à la ligne centrale longitudinale, ou inférieur à environ 75°, ou inférieur à environ 60° ou inférieur à environ 45°.
  11. Système de refroidissement d'huile, comprenant :
    une cavité (8) ayant une entrée de milieu de refroidissement de liquide (60) et une sortie de milieu de refroidissement de liquide (50) :
    une entrée d'huile (4) pour l'huile à refroidir et une sortie d'huile (3) pour l'huile refroidie ; et
    un échangeur thermique (10,10') selon une quelconque des revendications précédentes, ledit échangeur thermique étant substantiellement renferméedans ladite cavité (8),
    dans lequel le second canal (7) est au moins partiellement formé par la cavité (8).
  12. Procédé de refroidissement d'huile dans un véhicule utilisant un système de refroidissement d'huile selon la revendication 11, le procédé comprenant de :
    amener l'huile à refroidir à s'écouler de l'entrée d'huile (4) à travers le premier canal (12) vers la sortie d'huile (3), et
    amener le milieu de refroidissement de liquide (60) à s'écouler de l'entrée de milieu de refroidissement à travers le second canal (7) vers la sortie de milieu de refroidissement (50).
EP11796046.8A 2010-06-16 2011-06-10 Échangeur de chaleur de type à plaques, système de refroidissement d'huile, et procédé de refroidissement d'huile Active EP2583046B1 (fr)

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EP12195825.0A EP2594885B1 (fr) 2010-06-16 2011-06-10 Échangeur thermique possédant une surface de transfert thermique étendue autour de points de fixation
PL12195825T PL2594885T3 (pl) 2010-06-16 2011-06-10 Wymiennik ciepła mający powiększoną powierzchnię wymiany ciepła wokół punktów mocowania

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SE1050615A SE536042C2 (sv) 2010-06-16 2010-06-16 Värmeväxlare med utökad värmeöverföringsyta runt fästpunkter
PCT/SE2011/050713 WO2011159227A1 (fr) 2010-06-16 2011-06-10 Échangeur de chaleur de type à plaques, système de refroidissement d'huile, et procédé de refroidissement d'huile

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EP2583046A4 (fr) 2014-11-19
EP2583046A1 (fr) 2013-04-24
JP2013528779A (ja) 2013-07-11
EP2594885A3 (fr) 2017-12-13
CN102939509A (zh) 2013-02-20
SE1050615A1 (sv) 2011-12-17
EP2594885B1 (fr) 2019-05-15
CN102939509B (zh) 2016-07-06
PL2583046T3 (pl) 2019-06-28
EP2594885A2 (fr) 2013-05-22
PL2594885T3 (pl) 2019-12-31
BR112012031685B1 (pt) 2020-12-29
US20130092359A1 (en) 2013-04-18
WO2011159227A1 (fr) 2011-12-22
SE536042C2 (sv) 2013-04-09
BR112012031685A2 (pt) 2016-11-08
CN106123652A (zh) 2016-11-16
CN106123652B (zh) 2019-04-05

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