EP3274644B1 - Collecting box for a heat exchanger of a motor vehicle air-conditioning circuit, and heat exchanger comprising such a collecting box - Google Patents

Collecting box for a heat exchanger of a motor vehicle air-conditioning circuit, and heat exchanger comprising such a collecting box Download PDF

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Publication number
EP3274644B1
EP3274644B1 EP16714808.9A EP16714808A EP3274644B1 EP 3274644 B1 EP3274644 B1 EP 3274644B1 EP 16714808 A EP16714808 A EP 16714808A EP 3274644 B1 EP3274644 B1 EP 3274644B1
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EP
European Patent Office
Prior art keywords
chambers
inlet
collecting
collecting box
width
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.)
Not-in-force
Application number
EP16714808.9A
Other languages
German (de)
French (fr)
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EP3274644A1 (en
Inventor
Sylvain Moreau
Frédéric TISON
François Busson
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.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP3274644A1 publication Critical patent/EP3274644A1/en
Application granted granted Critical
Publication of EP3274644B1 publication Critical patent/EP3274644B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, 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
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • 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
    • F28D2021/0085—Evaporators

Definitions

  • the invention relates to the field of heat exchangers, especially evaporators, and relates in particular to an associated collector box.
  • the invention will find particular applications in the field of air conditioning circuits for motor vehicles.
  • heat exchangers composed of a beam, itself composed of parallel tubes, said beam allowing a heat exchange between a first fluid flowing inside said tubes, and a second fluid, passing through said beam between said tubes.
  • Said heat exchangers further comprise collecting boxes to which said tubes are connected.
  • the bundle of several rows of tubes in particular two or three, arranged one behind the other in the direction of flow of the second fluid.
  • the manifolds have an interior space divided into as many collecting chambers as there are rows of tubes in the bundle. Each collecting chamber is then connected to the tubes of one of the rows of the beam via introduction orifices.
  • the first fluid enters the heat exchanger through a first inlet / outlet orifice of the manifold, circulates inside the bundle through each collecting chamber according to a predetermined circulation path . Said first fluid then leaves the heat exchanger via a second inlet / outlet orifice of the manifold. During its passage in the heat exchanger, the fluid undergoes a change of state. It is known to adapt the dimensions of the inlet / outlet ports so as to limit the generation of pressure losses of the fluid. However, the solutions already proposed in this sense are accompanied by an increase in width of the bulk of the collector box.
  • a European patent application EP0762072A2 discloses a heat exchanger construction comprising spaced apart, generally parallel, first and second tubular collectors having opposite ends with a plurality of spaced-apart and parallel tubes extending between them and having their ends in fluid communication with the interior of the collectors.
  • An adapter in fluid communication with the interior of the collectors is attached to the outside of the heat exchanger to place the heat exchanger in communication with the fluid conduits which can be arranged at different locations with respect to the exchanger heat.
  • the invention thus relates to a collector box, in particular for a motor vehicle air-conditioning circuit heat exchanger, comprising at least two inlet / outlet chambers of the collector box and two collector chambers, said collector chambers being designed to be connected to tubes of a heat exchange bundle of said heat exchanger, said collecting chambers extending in a main direction of longitudinal extension and having a dimension, called width, measured in a direction orthogonal to said longitudinal direction, each of the chambers of input / output being connected to one of said collector chambers and provided with an inlet / outlet orifice of the manifold, the inlet / outlet orifice of one of the inlet / outlet chambers, said orifice widened, having a dimension, called width, in the direction of the width of the collecting chambers, greater than the width of the collecting chamber to which said input / output
  • the presence of the inlet / outlet ports at the chambers and not directly at the collector chambers allows greater flexibility in the sizing of each of said orifices. We can then enlarge one of the dedicated orifices without generating a additional width space. This flexibility thus allows a better limitation of the losses of charges generated by the passage of the first fluid at the level of the inlet / outlet with constant bulk.
  • the invention relates to a manifold 1, in particular for heat exchanger 3 of the air conditioning circuit of a motor vehicle.
  • said heat exchanger 3 is for example an evaporator configured to allow heat energy exchange between a first fluid and a second fluid.
  • Said exchanger 3 is composed of said manifold 1 and a bundle 30 comprising several rows 200, 190 and 180 of tubes 300.
  • the exchanger 3 is further composed of a manifold 2.
  • the manifold 1 and the collector 2 allow the circulation of the first fluid inside said beam 30. They 1, 2 are arranged on either side thereof, at each end of the tubes 300.
  • Said first fluid is for example a refrigerant circulating inside said tubes 300.
  • Said second fluid may be air, moving in the form of a stream of air, and which passes through said bundle 30 between said tubes 300.
  • Said tubes 300 define for example channels in which said first fluid flows.
  • Said tubes 300 are for example obtained by a folding sheet or by an assembly of plates arranged in pairs and between which circulates said first fluid.
  • Said tubes 300 are positioned parallel to each other.
  • Said rows 200, 190 and 180 are arranged in planes parallel to each other. Said rows here comprise a suction row 200, an injection row 190 and an intermediate row 180 which follow one after another in this order in a direction substantially parallel to the flow direction of said air flow.
  • said manifold 1 has a distal end 102 and a proximal end 101 and extends, according to the invention, in a main extension direction longitudinal between said distal end 102 and said proximal end 101.
  • Said manifold 1 is designed to allow the circulation of the refrigerant in each of the tubes 300 of the bundle 30.
  • Said collector box 1 is advantageously formed of a cover and a collector plate through which the tubes 300 open. Said cover and said collector plate are secured to one another so as to define an interior space of the header box 1.
  • Said cover is preferably substantially rectangular parallelepiped.
  • Said collector plate is for example a plate, of substantially rectangular shape, and designed so as to close said lid.
  • Said cover and said collector plate are advantageously designed in a metallic material, for example aluminum and / or an aluminum alloy, and secured to one another by brazing.
  • the manifold 1 has a dimension, called width, measured in a direction perpendicular to the direction of longitudinal extension of the manifold 1 and substantially parallel to the flow direction of said air flow.
  • the manifold 1 is composed of two inlet / outlet chambers 13 and 14, at least two collector chambers, here three 20, 19, 18, and two inlet / outlet ports 11, 12.
  • Said inlet / outlet chambers 13 and 14 are arranged on the side of the proximal end 101 of the manifold 1.
  • the collecting chambers 18, 19 and 20 are arranged on the side of the distal end 102 of the box. 1.
  • These inlet / outlet ports 11 and 12 of the manifold box 1 are located at one and the other of said inlet / outlet chambers 13 and 14.
  • Said collector chambers 18, 19 and 20 extend in a principal direction of longitudinal extension parallel to the direction of longitudinal extension of the manifold 1.
  • Said collector chambers 18, 19 and 20 comprise a suction chamber 20, a injection chamber 19 and an intermediate chamber 18. It will be noted that said collecting chambers 18, 19 and 20 are arranged here parallel to each other and adjacent to each other.
  • Each of the collecting chambers 18, 19 and 20 advantageously have a dimension called width measured in a direction parallel to the direction of the width of said manifold 1.
  • Said collector chambers 18, 19 and 20 each have a distal end and a proximal end and extend longitudinally between said distal end and said proximal end. Said distal ends of the collecting chambers 18, 19 and 20 merge with said distal end 102 of the header box 1. In contrast, the proximal ends of the collecting chambers 18, 19 and 20 are located at a distance from the proximal end 101 of the slip box 1 and two of them open into said inlet / outlet chambers 13 and 14.
  • said collecting chambers 18, 19 and 20 all have the same width.
  • Said collecting chambers 18, 19 and 20 are further separated from one another by longitudinal partitions 16, themselves parallel to one another and extending in the direction of longitudinal extension of the header box 1.
  • Each longitudinal partitions 16 extend longitudinally between the inlet / outlet chambers 13 and 14 and the distal end 102 of the manifold 1.
  • Said collector chambers 18, 19 and 20 are each provided with a series of insertion orifices 21 for the tubes 300 which allow the ends of each of the tubes 300 of the bundle 30 to open into one of the said collector chambers 18, 19 and 20.
  • each of said collecting chambers 18, 19 and 20 is configured to be connected to one of the rows of tubes 300 of the bundle 30.
  • the intermediate chamber 18 is designed to be connected to the intermediate row 180
  • the injection chamber 19 is designed to be connected to the injection row 190
  • the suction chamber 20 is designed to be connected to the suction row 200.
  • the intermediate chamber 18, the injection chamber 19 and the suction chamber 20 are arranged in this following order a direction parallel to said direction of flow of the air flow.
  • said insertion orifices 21 of the tubes 300 are slits arranged perpendicularly to the direction of longitudinal extension of the collecting chambers 18, 19 and 20 and all parallel to each other. Said insertion orifices 21 of the tubes 300 all have an identical dimension, called length, measured in a direction perpendicular to the direction of longitudinal extension of the collecting chambers 18, 19 and 20. Said length of said insertion orifices 21 is substantially identical. to the width of the collecting chambers 18, 19 and 20. Each of said collecting chambers 18, 19 and 20 is provided with as many insertion orifices 21 as there are tubes 300 per row of the bundle 30.
  • said insertion orifices 21 of the tubes 300 are arranged on the collector plate 6.
  • the collector chambers 18, 19 and 20 may, in addition, be provided with additional transverse partitions 17 'to divide each of the collector chambers 18, 19 and 20 into several compartments. Said transverse partitions 17 'thus make it possible to modulate the circulation of the refrigerant within the rows 180, 190 and 200 in several passes.
  • Said inlet / outlet chambers 13 and 14 are arranged in the manifold 1 between the proximal end 101 of the manifold 1 and the proximal ends of the collecting chambers 18, 19 and 20.
  • two of the collecting chambers are directly fluidly connected to the inlet / outlet chambers 13 and 14.
  • the injection chamber 19 is connected, at its proximal end, to one of the inlet / outlet chambers, called the first chamber 13.
  • the suction chamber 20 is connected to its end proximally, at the other of said inlet / outlet chambers, said second chamber 14.
  • the intermediate chamber 18 it is not directly connected to either of the inlet / outlet chambers 13 and 14. On the contrary, the intermediate chamber 18 is closed at its proximal end by a transverse partition 17. In particular, said first chamber 13 is physically separated from the intermediate chamber 18 by said transverse partition 17. It should be noted that said transverse partition 17 is for example oriented perpendicularly to the direction of extension of said chamber Intermediate 18.
  • the first chamber 13 and the second chamber 14 each have a dimension, called width, measured in a direction parallel to the direction of the width of the manifold 1.
  • Said inlet / outlet chambers 13 and 14 extend longitudinally between the proximal end 101 of the manifold 1 and the proximal ends of the collecting chambers 18, 19 and 20.
  • the two inlet / outlet chambers 13 and 14 occupy an area of the manifold 1 located between the proximal ends of the collector chambers 18, 19 and 20 and the proximal end of said collector box 1.
  • the two input / output chambers 13 and 14 each have nested and complementary shapes and outlines so that they occupy, here, the width of the manifold 1.
  • said two inlet / outlet chambers (13, 14) are adjacent to each other and are separated from each other by a partition, referred to as an oblique partition 15.
  • Said partition oblique 15 advantageously extends between the proximal end 101 of the manifold 1 and the longitudinal partition 16 separating the suction chamber 20 from the injection chamber 19.
  • Said oblique partition 15 may be an oblique extension, it is that is to say at an angle, of said longitudinal partition 16 that it connects to the proximal end 101 of the manifold 1.
  • the oblique partition 15, separating said first chamber 13 from said second chamber 14, is oriented so that the width of the second chamber 14 increases as one approaches, in the direction of longitudinal extension of the box 1, the proximal end 101 of said manifold 1.
  • said inlet / outlet chambers 13 and 14 having complementary shapes, the orientation of the oblique partition 15 is such that the width of the first chamber 13 decreases as one approaches, in the direction of longitudinal extension of the manifold 1, the proximal end 101 of the manifold 1.
  • the width of the first chamber 13 is substantially equal to twice the width of one of the collecting chambers 18, 19 and 20 while the width of the second chamber 14 is substantially equal to the width of only one of the collecting chambers 18, 19 and 20.
  • the width of the first chamber 13 is substantially equal to the width of a only the collecting chambers 18, 19 and 20 while the width of the second chamber 14 is substantially equal to twice the width of one of the collecting chambers 18, 19 and 20.
  • said second chamber 14 is not only located in the space formed by a longitudinal extension of the suction chamber 20, to which it is connected, but that it also occupies part of the space formed by a longitudinal extension of the injection chamber 19.
  • the first chamber 13 is provided with one of the inlet / outlet ports of the manifold 1, said first orifice 11.
  • Said second chamber 14 is provided with the other of said inlet / outlet ports, said second orifice 12.
  • the first orifice 11 is designed to allow the entry of said first fluid inside the manifold 1 while the second orifice 12 is designed to allow the output of said first fluid out of said manifold 1.
  • the first fluid enters in liquid form in the manifold 1 by said first orifice 11, circulates in the collector chambers 18, 19 and 20, in the collector 2 and in the tubes 300 of the bundle 30 according to a circulation path determined by the respective location of the transverse bulkheads of the collecting chambers of the manifold 1 and the collector 2.
  • the circulation of the first fluid takes place in series from one row to another and, in each row, a pass to the other.
  • the first fluid leaves the evaporator 3 through the second orifice 12, in gaseous form, after having undergone a change of state.
  • Said inlet / outlet ports 11 and 12 are formed for example of an opening located on a wall of the header box 1.
  • Said orifices 11 and 12 have a dimension, called width, measured in a direction parallel to the direction of the width of the collector box. They are, for example, of circular section and their width then represents a diameter.
  • the width of said second orifice 12 may be between 1 and 3 times the width of said first orifice 11.
  • the width of said first orifice may be between 0.8 and 1.2 times the width of the injection chamber 19 while the width width of said second orifice may be limited to twice the width of the suction chamber 20.
  • said first 11 and second 12 orifices may be centered on the same straight line parallel to the direction of the width of the collector box 1.
  • said first and second orifices 11, 12 are centered on a straight line orthogonal to the direction of longitudinal extension of the collecting chambers 18, 19 and 20.
  • said orifices 11 and 12 may for example allow the connection of the manifold 1 respectively to an inlet pipe 110 of the refrigerant and to an outlet pipe 120 of the refrigerant.
  • said orifices may have a different shape, for example substantially oval or rectangular.
  • the inlet / outlet ports 11 and 12 are arranged on a wall of the manifold 1 orthogonal to the direction of longitudinal extension of said manifold 1, for example on the cover 5.
  • the inlet / outlet ports 11 and 12 may be arranged on a wall of the manifold 1 parallel to the direction of longitudinal extension of said manifold 1, for example on the manifold plate 6.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

L'invention se rapporte au domaine des échangeurs de chaleur, notamment des évaporateurs, et concerne en particulier une boite collectrice associée. L'invention trouvera notamment ses applications dans le domaine des circuits de climatisation pour véhicules automobiles.The invention relates to the field of heat exchangers, especially evaporators, and relates in particular to an associated collector box. The invention will find particular applications in the field of air conditioning circuits for motor vehicles.

Il est connu des échangeurs de chaleur composés d'un faisceau, lui-même composé de tubes parallèles, ledit faisceau permettant un échange de chaleur entre un premier fluide, circulant à l'intérieur desdits tubes, et un second fluide, traversant ledit faisceau entre lesdits tubes. Lesdits échangeurs comprennent en outre des boites collectrices auxquelles sont connectés lesdits tubes.It is known heat exchangers composed of a beam, itself composed of parallel tubes, said beam allowing a heat exchange between a first fluid flowing inside said tubes, and a second fluid, passing through said beam between said tubes. Said heat exchangers further comprise collecting boxes to which said tubes are connected.

Afin de favoriser les échanges thermiques entre le premier et le second fluide, il est également connu de munir le faisceau de plusieurs rangées de tubes, notamment deux ou trois, disposées les unes derrière les autres selon le sens d'écoulement du second fluide. Les boites collectrices présentent un espace intérieur divisé en autant de chambres collectrices qu'il existe de rangées de tubes dans le faisceau. Chaque chambre collectrice est alors connectée aux tubes d'une des rangées du faisceau par l'intermédiaire d'orifices d'introduction.In order to promote heat exchange between the first and the second fluid, it is also known to provide the bundle of several rows of tubes, in particular two or three, arranged one behind the other in the direction of flow of the second fluid. The manifolds have an interior space divided into as many collecting chambers as there are rows of tubes in the bundle. Each collecting chamber is then connected to the tubes of one of the rows of the beam via introduction orifices.

Dans ce type d'échangeurs, le premier fluide pénètre dans l'échangeur de chaleur par un premier orifice d'entrée/sortie de la boite collectrice, circule à l'intérieur du faisceau en passant par chaque chambre collectrice selon un chemin de circulation prédéterminé. Ledit premier fluide ressort ensuite de l'échangeur de chaleur par un deuxième orifice d'entrée/sortie de la boite collectrice. Lors de son passage dans l'échangeur de chaleur, le fluide subit un changement d'état. Il est connu d'adapter les dimensions des orifices d'entrée/sortie de manière à limiter la génération de pertes de charge du fluide. Cependant, les solutions déjà proposées en ce sens s'accompagnent d'une augmentation en largeur de l'encombrement de la boite collectrice.In this type of exchanger, the first fluid enters the heat exchanger through a first inlet / outlet orifice of the manifold, circulates inside the bundle through each collecting chamber according to a predetermined circulation path . Said first fluid then leaves the heat exchanger via a second inlet / outlet orifice of the manifold. During its passage in the heat exchanger, the fluid undergoes a change of state. It is known to adapt the dimensions of the inlet / outlet ports so as to limit the generation of pressure losses of the fluid. However, the solutions already proposed in this sense are accompanied by an increase in width of the bulk of the collector box.

Une demande de brevet européen EP0762072A2 divulgue une construction d'échangeur de chaleur comprenant des premier et second collecteurs tubulaires espacés, généralement parallèles, ayant des extrémités opposées avec une pluralité de tubes en parallèle et espacés les uns des autres qui s'étendent entre eux et ont leurs extrémités en communication fluidique avec l'intérieur des collecteurs. Un adaptateur en communication fluide avec l'intérieur des collecteurs est fixé à l'extérieur de l'échangeur de chaleur pour placer l'échangeur de chaleur en communication avec les conduits de fluide qui peuvent être disposés à différents endroits par rapport à l'échangeur de chaleur.A European patent application EP0762072A2 discloses a heat exchanger construction comprising spaced apart, generally parallel, first and second tubular collectors having opposite ends with a plurality of spaced-apart and parallel tubes extending between them and having their ends in fluid communication with the interior of the collectors. An adapter in fluid communication with the interior of the collectors is attached to the outside of the heat exchanger to place the heat exchanger in communication with the fluid conduits which can be arranged at different locations with respect to the exchanger heat.

Un des buts de l'invention est une réduction efficace des pertes de charges générées par un passage du premier fluide au niveau desdits orifices d'entrée/sortie de la boite collectrice tout en limitant l'encombrement généré par celle-ci. L'invention concerne ainsi une boite collectrice, notamment pour échangeur de chaleur de circuit de climatisation de véhicule automobile, comprenant au moins deux chambres d'entrée/sortie de la boite collectrice et deux chambres collectrices, lesdites chambres collectrices étant conçues pour être connectées à des tubes d'un faisceau d'échange de chaleur dudit échangeur, lesdites chambres collectrices s'étendant selon une direction principale d'extension longitudinale et présentant une dimension, dite largeur, mesurée selon une direction orthogonale à ladite direction longitudinale, chacune des chambres d'entrée/sortie étant connectée à l'une desdites chambres collectrices et munie d'un orifice d'entrée/sortie de la boite collectrice, l'orifice d'entrée/sortie d'une des chambres d'entrée/sortie, dit orifice élargi, présentant une dimension, dite largeur, selon la direction de la largeur des chambres collectrices, supérieure à la largeur de la chambre collectrice à laquelle ladite chambre d'entrée/sortie est connectée.One of the aims of the invention is an effective reduction of the pressure losses generated by a passage of the first fluid at said inlet / outlet ports of the header box while limiting the space generated by it. The invention thus relates to a collector box, in particular for a motor vehicle air-conditioning circuit heat exchanger, comprising at least two inlet / outlet chambers of the collector box and two collector chambers, said collector chambers being designed to be connected to tubes of a heat exchange bundle of said heat exchanger, said collecting chambers extending in a main direction of longitudinal extension and having a dimension, called width, measured in a direction orthogonal to said longitudinal direction, each of the chambers of input / output being connected to one of said collector chambers and provided with an inlet / outlet orifice of the manifold, the inlet / outlet orifice of one of the inlet / outlet chambers, said orifice widened, having a dimension, called width, in the direction of the width of the collecting chambers, greater than the width of the collecting chamber to which said input / output chamber is connected.

Ainsi, la présence des orifices d'entrée/sortie au niveau des chambres et non directement au niveau des chambres collectrices permet une meilleure flexibilité quant au dimensionnement de chacun desdits orifices. On peut alors agrandir l'un des orifices dédiés sans générer un encombrement en largeur supplémentaire. Cette flexibilité permet de la sorte une meilleure limitation des pertes de charges générées par le passage du premier fluide au niveau des orifices d'entrée/sortie à encombrement constant.Thus, the presence of the inlet / outlet ports at the chambers and not directly at the collector chambers allows greater flexibility in the sizing of each of said orifices. We can then enlarge one of the dedicated orifices without generating a additional width space. This flexibility thus allows a better limitation of the losses of charges generated by the passage of the first fluid at the level of the inlet / outlet with constant bulk.

Selon différents modes de réalisation, qui pourront être pris ensemble ou séparément :

  • lesdites chambres collectrices comprennent des orifices d'introduction des tubes présentant une dimension, dite longueur, mesurée selon la direction de la largeur des chambres collectrices, l'ensemble desdits orifices d'introduction des tubes présentant une même longueur,
  • lesdites chambres d'entrée/sortie sont situées au niveau d'une extrémité longitudinale des chambres collectrices,
  • lesdites chambres collectrices présentent toutes une largeur identique,
  • les deux orifices d'entrée/sortie de la boite collectrice sont centrés sur une même droite orthogonale à la direction d'extension longitudinale des chambres collectrices,
  • la largeur de l'orifice d'entrée/sortie agrandi est comprise entre 1 et 3 fois la largeur de l'autre desdits orifices d'entrée/sortie,
  • la largeur de l'orifice d'entrée/sortie agrandi est inférieure à deux fois la largeur de la chambre collectrice à laquelle la chambre d'entrée/sortie munie dudit orifice d'entrée/sortie agrandi est connectée,
  • la largeur de l'autre desdits orifices d'entrée/sortie est comprise entre 0,8 et 1,2 fois la largeur de la chambre collectrice à laquelle la chambre d'entrée/sortie munie dudit orifice d'entrée/sortie est connectée,
  • l'une des chambres d'entrée/sortie occupe au moins partiellement un espace formé par un prolongement longitudinal d'une chambre collectrice adjacente à celle à laquelle elle est connectée,
  • lesdites chambres d'entrée/sortie présentent des formes et/ou des contours complémentaires et/ou imbriqués dans une largeur de la boite collectrice, ladite largeur de la boite collectrice étant mesurée selon une direction parallèle à une direction de la largeur des chambres collectrices,
  • les orifices d'entrée/sortie sont disposés sur une face de la boite collectrice orthogonale à la direction d'extension longitudinale desdites chambres collectrices,
  • les orifices d'entrée/sortie sont disposés sur une face de la boite collectrice parallèle à la direction d'extension longitudinale desdites chambres collectrices,
  • ladite boite collectrice comprend une plaque collectrice configurée pour être connectée aux tubes et un couvercle,
  • ledit couvercle comprend des cloisons longitudinales séparant lesdites chambres collectrices, lesdites cloisons étant configurées pour faire communiquer deux desdites chambres collectrices, respectivement, avec l'une et l'autre desdites chambres d'entrée/sortie,
  • le couvercle comprend en outre des cloisons transversales divisant au moins l'une desdites chambres collectrices en plusieurs compartiments,
  • chacun desdits orifices d'entrée/sortie est conçu pour être raccordé à une conduite.
According to different embodiments, which can be taken together or separately:
  • said collecting chambers comprise tube introduction orifices having a dimension, called length, measured along the direction of the width of the chambers collectors, all of said tube introduction orifices having the same length,
  • said inlet / outlet chambers are located at a longitudinal end of the collecting chambers,
  • said collecting chambers all have an identical width,
  • the two inlet / outlet ports of the manifold are centered on the same straight line orthogonal to the direction of longitudinal extension of the collecting chambers,
  • the width of the enlarged inlet / outlet orifice is between 1 and 3 times the width of the other of said inlet / outlet ports,
  • the width of the enlarged inlet / outlet orifice is less than twice the width of the collection chamber at which the inlet / outlet chamber provided with said enlarged inlet / outlet port is connected,
  • the width of the other of said inlet / outlet ports is between 0.8 and 1.2 times the width of the collection chamber at which the inlet / outlet chamber provided with said inlet / outlet port is connected,
  • one of the inlet / outlet chambers at least partially occupies a space formed by a longitudinal extension of a collector chamber adjacent to that to which it is connected,
  • said inlet / outlet chambers have complementary shapes and / or contours and / or imbricated in a width of the manifold, said width of the manifold being measured in a direction parallel to a direction of the width of the collecting chambers,
  • the inlet / outlet orifices are disposed on one face of the header manifold orthogonal to the direction of longitudinal extension of said collecting chambers,
  • the inlet / outlet orifices are arranged on one face of the manifold parallel to the direction of longitudinal extension of said collecting chambers,
  • said manifold comprises a manifold plate configured to be connected to the tubes and a lid,
  • said cover comprises longitudinal partitions separating said collector chambers, said partitions being configured to communicate two of said collector chambers, respectively, with one and the other of said inlet / outlet chambers,
  • the cover further comprises transverse partitions dividing at least one of said collecting chambers into several compartments,
  • each of said inlet / outlet ports is adapted to be connected to a conduit.

L'invention concerne encore un échangeur de chaleur comprenant une boite collectrice telle que décrite ci-dessus. Selon l'un ou l'autre des modes de réalisation suivants:

  • Ledit échangeur est apte à fonctionner comme un condenseur,
  • Ledit échangeur est apte à fonctionner comme un évaporateur.
The invention also relates to a heat exchanger comprising a collector box as described above. According to one or other of the following embodiments:
  • Said exchanger is able to function as a condenser,
  • Said exchanger is able to function as an evaporator.

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés parmi lesquels :

  • La figure 1 est une vue en perspective d'un échangeur de chaleur muni d'une boite collectrice selon l'invention.
  • La figure 2 est une vue partielle de dessus, en transparence, d'une boite collectrice selon l'invention.
  • La figure 3 est une vue partielle en perspective d'un couvercle d'une boite collectrice selon l'invention.
  • La figure 4 est une vue en perspective d'un échangeur de chaleur muni d'une boite collectrice selon un autre mode de réalisation de l'invention.
The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent in the following detailed explanatory description of at least one embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the appended schematic drawings among which:
  • The figure 1 is a perspective view of a heat exchanger provided with a header box according to the invention.
  • The figure 2 is a partial top view, in transparency, of a collector box according to the invention.
  • The figure 3 is a partial perspective view of a lid of a collection box according to the invention.
  • The figure 4 is a perspective view of a heat exchanger provided with a header box according to another embodiment of the invention.

L'invention concerne une boite collectrice 1, notamment pour échangeur de chaleur 3 de circuit de climatisation de véhicule automobile.The invention relates to a manifold 1, in particular for heat exchanger 3 of the air conditioning circuit of a motor vehicle.

Comme illustré aux figures 1 et 4, ledit échangeur de chaleur 3 est par exemple un évaporateur configuré pour permettre un échange d'énergie thermique entre un premier fluide et un deuxième fluide. Ledit échangeur 3 est composé de ladite boite collectrice 1 et d'un faisceau 30 comprenant plusieurs rangées 200, 190 et 180 de tubes 300. L'échangeur 3 est en outre composé d'un collecteur 2. La boite collectrice 1 et le collecteur 2 permettent la circulation du premier fluide à l'intérieur dudit faisceau 30. Ils 1, 2 sont disposés de part et d'autre de celui-ci, à chaque extrémité des tubes 300.As illustrated in figures 1 and 4 , said heat exchanger 3 is for example an evaporator configured to allow heat energy exchange between a first fluid and a second fluid. Said exchanger 3 is composed of said manifold 1 and a bundle 30 comprising several rows 200, 190 and 180 of tubes 300. The exchanger 3 is further composed of a manifold 2. The manifold 1 and the collector 2 allow the circulation of the first fluid inside said beam 30. They 1, 2 are arranged on either side thereof, at each end of the tubes 300.

Ledit premier fluide est par exemple un fluide frigorigène circulant à l'intérieur desdits tubes 300. Ledit deuxième fluide pourra être de l'air, se déplaçant sous la forme d'un flux d'air, et qui traverse ledit faisceau 30 entre lesdits tubes 300.Said first fluid is for example a refrigerant circulating inside said tubes 300. Said second fluid may be air, moving in the form of a stream of air, and which passes through said bundle 30 between said tubes 300.

Lesdits tubes 300 définissent par exemple des canaux dans lesquels circule ledit premier fluide. Lesdits tubes 300 sont par exemple obtenus par un pliage de tôle ou par un assemblage de plaques agencées par paires et entre lesquelles circule ledit premier fluide. Lesdits tubes 300 sont positionnés parallèlement les uns aux autres.Said tubes 300 define for example channels in which said first fluid flows. Said tubes 300 are for example obtained by a folding sheet or by an assembly of plates arranged in pairs and between which circulates said first fluid. Said tubes 300 are positioned parallel to each other.

Lesdites rangées 200, 190 et 180 sont agencées selon des plans parallèles les uns aux autres. Lesdites rangées comprennent ici une rangée d'aspiration 200, une rangée d'injection 190 et une rangée intermédiaire 180 qui se succèdent les unes derrière les autres dans cet ordre selon une direction sensiblement parallèle à la direction d'écoulement dudit flux d'air.Said rows 200, 190 and 180 are arranged in planes parallel to each other. Said rows here comprise a suction row 200, an injection row 190 and an intermediate row 180 which follow one after another in this order in a direction substantially parallel to the flow direction of said air flow.

Comme illustré aux figures 2 et 3, ladite boite collectrice 1 présente une extrémité distale 102 et une extrémité proximale 101 et s'étend, d'après l'invention, selon une direction principale d'extension longitudinale entre ladite extrémité distale 102 et ladite extrémité proximale 101. Ladite boite collectrice 1 est conçue pour permettre la circulation du fluide frigorigène dans chacun des tubes 300 du faisceau 30.As illustrated in figures 2 and 3 , said manifold 1 has a distal end 102 and a proximal end 101 and extends, according to the invention, in a main extension direction longitudinal between said distal end 102 and said proximal end 101. Said manifold 1 is designed to allow the circulation of the refrigerant in each of the tubes 300 of the bundle 30.

Ladite boite collectrice 1 est avantageusement formée d'un couvercle et d'une plaque collectrice à travers laquelle les tubes 300 débouchent. Ledit couvercle et ladite plaque collectrice sont solidarisés l'un à l'autre de manière à délimiter un espace intérieur de la boite collectrice 1. Ledit couvercle est avantageusement sensiblement parallélépipédique rectangle. Ladite plaque collectrice est par exemple une plaque, de forme sensiblement rectangulaire, et conçue de manière à pouvoir fermer ledit couvercle. Ledit couvercle et ladite plaque collectrice sont avantageusement conçus dans une matière métallique, par exemple de l'aluminium et/ou un alliage d'aluminium, et solidarisés l'un à l'autre par brasage.Said collector box 1 is advantageously formed of a cover and a collector plate through which the tubes 300 open. Said cover and said collector plate are secured to one another so as to define an interior space of the header box 1. Said cover is preferably substantially rectangular parallelepiped. Said collector plate is for example a plate, of substantially rectangular shape, and designed so as to close said lid. Said cover and said collector plate are advantageously designed in a metallic material, for example aluminum and / or an aluminum alloy, and secured to one another by brazing.

La boite collectrice 1 présente une dimension, dite largeur, mesurée selon une direction perpendiculaire à la direction d'extension longitudinale de la boite collectrice 1 et sensiblement parallèle à la direction d'écoulement dudit flux d'air.The manifold 1 has a dimension, called width, measured in a direction perpendicular to the direction of longitudinal extension of the manifold 1 and substantially parallel to the flow direction of said air flow.

Selon l'invention, la boite collectrice 1 est composée de deux chambres d'entrée/sortie 13 et 14, d'au moins deux chambres collectrices, ici trois 20, 19, 18, et de deux orifices d'entrée/sorties 11, 12.According to the invention, the manifold 1 is composed of two inlet / outlet chambers 13 and 14, at least two collector chambers, here three 20, 19, 18, and two inlet / outlet ports 11, 12.

Lesdites chambres d'entrée/sortie 13 et 14 sont agencées du côté de l'extrémité proximale 101 de la boite collectrice 1. Les chambres collectrices 18, 19 et 20 sont, elles, agencées du côté de l'extrémité distale 102 de la boite collectrice 1. Lesdits orifices d'entrée/sortie 11 et 12 de la boite collectrice 1 sont situés au niveau de l'une et l'autre desdites chambres d'entrée/sortie 13 et 14.Said inlet / outlet chambers 13 and 14 are arranged on the side of the proximal end 101 of the manifold 1. The collecting chambers 18, 19 and 20 are arranged on the side of the distal end 102 of the box. 1. These inlet / outlet ports 11 and 12 of the manifold box 1 are located at one and the other of said inlet / outlet chambers 13 and 14.

Lesdites chambres collectrices 18, 19 et 20 s'étendent selon une direction principale d'extension longitudinale parallèle à la direction d'extension longitudinale de la boite collectrice 1. Lesdites chambres collectrices 18, 19 et 20 comprennent une chambre d'aspiration 20, une chambre d'injection 19 et une chambre intermédiaire 18. On notera que lesdites chambres collectrices 18, 19 et 20 sont agencées ici de manière parallèle les unes aux autres et de manière adjacente les unes aux autres. Chacune des chambres collectrices 18, 19 et 20 présentent avantageusement une dimension dite largeur mesurée selon une direction parallèle à la direction de la largeur de ladite boite collectrice 1.Said collector chambers 18, 19 and 20 extend in a principal direction of longitudinal extension parallel to the direction of longitudinal extension of the manifold 1. Said collector chambers 18, 19 and 20 comprise a suction chamber 20, a injection chamber 19 and an intermediate chamber 18. It will be noted that said collecting chambers 18, 19 and 20 are arranged here parallel to each other and adjacent to each other. Each of the collecting chambers 18, 19 and 20 advantageously have a dimension called width measured in a direction parallel to the direction of the width of said manifold 1.

Lesdites chambres collectrices 18, 19 et 20 présentent chacune une extrémité distale et une extrémité proximale et s'étendent longitudinalement entre ladite extrémité distale et ladite extrémité proximale. Lesdites extrémités distales des chambres collectrices 18, 19 et 20 sont confondues avec ladite extrémité distale 102 de la boite collectrice 1. En revanche, les extrémités proximales des chambres collectrices 18, 19 et 20 sont situées à distance de l'extrémité proximale 101 de la boite collectrice 1 et deux d'entre elles débouchent dans lesdites chambres d'entrée/sortie 13 et 14.Said collector chambers 18, 19 and 20 each have a distal end and a proximal end and extend longitudinally between said distal end and said proximal end. Said distal ends of the collecting chambers 18, 19 and 20 merge with said distal end 102 of the header box 1. In contrast, the proximal ends of the collecting chambers 18, 19 and 20 are located at a distance from the proximal end 101 of the slip box 1 and two of them open into said inlet / outlet chambers 13 and 14.

Avantageusement, lesdites chambres collectrices 18, 19 et 20 présentent toutes une même largeur.Advantageously, said collecting chambers 18, 19 and 20 all have the same width.

Lesdites chambres collectrices 18, 19 et 20 sont, en outre, séparées les unes des autres par des cloisons longitudinales 16, elles-mêmes parallèles les unes aux autres et s'étendant selon la direction d'extension longitudinale de la boite collectrice 1. Chacune des cloisons longitudinales 16 s'étend longitudinalement entre les chambres d'entrée/sortie 13 et 14 et l'extrémité distale 102 de la boite collectrice 1.Said collecting chambers 18, 19 and 20 are further separated from one another by longitudinal partitions 16, themselves parallel to one another and extending in the direction of longitudinal extension of the header box 1. Each longitudinal partitions 16 extend longitudinally between the inlet / outlet chambers 13 and 14 and the distal end 102 of the manifold 1.

Lesdites chambres collectrices 18, 19 et 20 sont munies chacune d'une série d'orifices d'introduction 21 des tubes 300 qui permettent aux extrémités de chacun des tubes 300 du faisceau 30 de déboucher dans l'une desdites chambres collectrices 18, 19 et 20. De la sorte, chacune desdites chambres collectrices 18, 19 et 20 est configurée pour être connectée à l'une des rangées de tubes 300 du faisceau 30. On notera, en particulier, que la chambre intermédiaire 18 est conçue pour être connectée à la rangée intermédiaire 180, que la chambre d'injection 19 est conçue pour être connectée à la rangée d'injection 190 et que la chambre d'aspiration 20 est conçue pour être connectée à la rangée d'aspiration 200. On notera également qu'une fois la boite collectrice 1 assemblée sur le faisceau 30, la chambre intermédiaire 18, la chambre d'injection 19 et la chambre d'aspiration 20 sont agencées dans cet ordre suivant une direction parallèle à ladite direction d'écoulement du flux d'air.Said collector chambers 18, 19 and 20 are each provided with a series of insertion orifices 21 for the tubes 300 which allow the ends of each of the tubes 300 of the bundle 30 to open into one of the said collector chambers 18, 19 and 20. In this way, each of said collecting chambers 18, 19 and 20 is configured to be connected to one of the rows of tubes 300 of the bundle 30. It will be noted, in particular, that the intermediate chamber 18 is designed to be connected to the intermediate row 180, that the injection chamber 19 is designed to be connected to the injection row 190 and that the suction chamber 20 is designed to be connected to the suction row 200. It will also be noted that once the collector box 1 is assembled on the bundle 30, the intermediate chamber 18, the injection chamber 19 and the suction chamber 20 are arranged in this following order a direction parallel to said direction of flow of the air flow.

Comme illustré à la figure 2, lesdits orifices d'introduction 21 des tubes 300 sont des fentes agencées de manière perpendiculaire à la direction d'extension longitudinale des chambres collectrices 18, 19 et 20 et toutes parallèles les unes aux autres. Lesdits orifices d'introduction 21 des tubes 300 présentent tous une dimension identique, dite longueur, mesurée selon une direction perpendiculaire à la direction d'extension longitudinale des chambres collectrices 18, 19 et 20. Ladite longueur desdits orifices d'introduction 21 est sensiblement identique à la largeur des chambres collectrices 18, 19 et 20. Chacune desdites chambres collectrices 18, 19 et 20 est munie d'autant d'orifices d'introduction 21 qu'il existe de tubes 300 par rangée du faisceau 30.As illustrated in figure 2 , said insertion orifices 21 of the tubes 300 are slits arranged perpendicularly to the direction of longitudinal extension of the collecting chambers 18, 19 and 20 and all parallel to each other. Said insertion orifices 21 of the tubes 300 all have an identical dimension, called length, measured in a direction perpendicular to the direction of longitudinal extension of the collecting chambers 18, 19 and 20. Said length of said insertion orifices 21 is substantially identical. to the width of the collecting chambers 18, 19 and 20. Each of said collecting chambers 18, 19 and 20 is provided with as many insertion orifices 21 as there are tubes 300 per row of the bundle 30.

Avantageusement, lesdits orifices d'introduction 21 des tubes 300 sont disposés sur la plaque collectrice 6.Advantageously, said insertion orifices 21 of the tubes 300 are arranged on the collector plate 6.

Comme illustré aux figures 2 et 3, les chambres collectrices 18, 19 et 20 pourront, en outre, être munies de cloisons transversales 17' additionnelles permettant de diviser chacune des chambres collectrices 18, 19 et 20 en plusieurs compartiments. Lesdites cloisons transversales 17' permettent ainsi de moduler la circulation du fluide frigorigène à l'intérieur des rangées 180, 190 et 200 en plusieurs passes.As illustrated in figures 2 and 3 , the collector chambers 18, 19 and 20 may, in addition, be provided with additional transverse partitions 17 'to divide each of the collector chambers 18, 19 and 20 into several compartments. Said transverse partitions 17 'thus make it possible to modulate the circulation of the refrigerant within the rows 180, 190 and 200 in several passes.

Lesdites chambres d'entrée/sortie 13 et 14 sont agencées dans la boite collectrice 1 entre l'extrémité proximale 101 de la boite collectrice 1 et les extrémités proximales des chambres collectrices 18, 19 et 20.Said inlet / outlet chambers 13 and 14 are arranged in the manifold 1 between the proximal end 101 of the manifold 1 and the proximal ends of the collecting chambers 18, 19 and 20.

Afin de permettre la circulation du fluide frigorigène, deux des chambres collectrices sont directement connectées de manière fluidique aux chambres d'entrée/sortie 13 et 14. En particulier, la chambre d'injection 19 est connectée, au niveau de son extrémité proximale, à l'une des chambres d'entrée/sortie, dite première chambre 13. La chambre d'aspiration 20 est, elle, connectée, au niveau de son extrémité proximale, à l'autre desdites chambres d'entrée/sortie, dite deuxième chambre 14.In order to allow the circulation of the refrigerant, two of the collecting chambers are directly fluidly connected to the inlet / outlet chambers 13 and 14. In particular, the injection chamber 19 is connected, at its proximal end, to one of the inlet / outlet chambers, called the first chamber 13. The suction chamber 20 is connected to its end proximally, at the other of said inlet / outlet chambers, said second chamber 14.

La chambre intermédiaire 18, elle, n'est connectée directement ni à l'une ni à l'autre des chambres d'entrée/sortie 13 et 14. Au contraire, la chambre intermédiaire 18 est fermée au niveau de son extrémité proximale par une cloison transversale 17. En particulier, ladite première chambre 13 est séparée physiquement de la chambre intermédiaire 18 par ladite cloison transversale 17. Il est à noter que ladite cloison transversale 17 est par exemple orientée de manière perpendiculaire à la direction d'extension de ladite chambre intermédiaire 18.The intermediate chamber 18, it is not directly connected to either of the inlet / outlet chambers 13 and 14. On the contrary, the intermediate chamber 18 is closed at its proximal end by a transverse partition 17. In particular, said first chamber 13 is physically separated from the intermediate chamber 18 by said transverse partition 17. It should be noted that said transverse partition 17 is for example oriented perpendicularly to the direction of extension of said chamber Intermediate 18.

La première chambre 13 et la deuxième chambre 14 présente chacune une dimension, dite largeur, mesurée selon une direction parallèle à la direction de la largeur de la boite collectrice 1. Lesdites chambres d'entrée/sortie 13 et 14 s'étendent longitudinalement entre l'extrémité proximale 101 de la boite collectrice 1 et les extrémités proximales des chambres collectrices 18, 19 et 20. Autrement dit, les deux chambres d'entrée/sortie 13 et 14 occupent une zone de la boite collectrice 1 située entre les extrémités proximales des chambres collectrices 18, 19 et 20 et l'extrémité proximale de ladite boite collectrice 1. En outre, comme illustré aux figures 2 et 3, les deux chambres d'entrée/sortie 13 et 14 présentent chacune des formes et des contours imbriqués et complémentaires de sorte qu'elles occupent, ici, la largeur de la boite collectrice 1.The first chamber 13 and the second chamber 14 each have a dimension, called width, measured in a direction parallel to the direction of the width of the manifold 1. Said inlet / outlet chambers 13 and 14 extend longitudinally between the proximal end 101 of the manifold 1 and the proximal ends of the collecting chambers 18, 19 and 20. In other words, the two inlet / outlet chambers 13 and 14 occupy an area of the manifold 1 located between the proximal ends of the collector chambers 18, 19 and 20 and the proximal end of said collector box 1. In addition, as illustrated in FIGS. figures 2 and 3 , the two input / output chambers 13 and 14 each have nested and complementary shapes and outlines so that they occupy, here, the width of the manifold 1.

Il est à noter qu'avantageusement lesdites deux chambres d'entrée/sortie (13,14) sont adjacentes l'une à l'autre et sont séparées l'une de l'autre par une cloison, dite cloison oblique 15. Ladite cloison oblique 15 s'étend avantageusement entre l'extrémité proximale 101 de la boite collectrice 1 et la cloison longitudinale 16 séparant la chambre d'aspiration 20 de la chambre d'injection 19. Ladite cloison oblique 15 pourra être un prolongement oblique, c'est-à-dire en biais, de ladite cloison longitudinale 16 qu'elle relie à l'extrémité proximale 101 de la boite collectrice 1.It should be noted that advantageously said two inlet / outlet chambers (13, 14) are adjacent to each other and are separated from each other by a partition, referred to as an oblique partition 15. Said partition oblique 15 advantageously extends between the proximal end 101 of the manifold 1 and the longitudinal partition 16 separating the suction chamber 20 from the injection chamber 19. Said oblique partition 15 may be an oblique extension, it is that is to say at an angle, of said longitudinal partition 16 that it connects to the proximal end 101 of the manifold 1.

La cloison oblique 15, séparant ladite première chambre 13 de ladite deuxième chambre 14, est orientée de manière à ce que la largeur de la deuxième chambre 14 augmente à mesure que l'on se rapproche, selon la direction d'extension longitudinale de la boite collectrice 1, de l'extrémité proximale 101 de ladite boite collectrice 1. Inversement, lesdites chambres d'entrée/sortie 13 et 14 présentant des formes complémentaires, l'orientation de la cloison oblique 15 est telle que la largeur de la première chambre 13 diminue à mesure que l'on se rapproche, selon la direction d'extension longitudinale de la boite collectrice 1, de l'extrémité proximale 101 de la boite collectrice 1.The oblique partition 15, separating said first chamber 13 from said second chamber 14, is oriented so that the width of the second chamber 14 increases as one approaches, in the direction of longitudinal extension of the box 1, the proximal end 101 of said manifold 1. Conversely, said inlet / outlet chambers 13 and 14 having complementary shapes, the orientation of the oblique partition 15 is such that the width of the first chamber 13 decreases as one approaches, in the direction of longitudinal extension of the manifold 1, the proximal end 101 of the manifold 1.

Au niveau des extrémités proximales des chambres collectrices 18, 19 et 20, la largeur de la première chambre 13 est sensiblement égale à deux fois la largeur d'une des chambres collectrices 18, 19 et 20 tandis que la largeur de la deuxième chambre 14 est sensiblement égale à la largeur d'une seule des chambres collectrices 18, 19 et 20. Inversement, au niveau de l'extrémité proximale 101 de la boite collectrice 1, la largeur de la première chambre 13 est sensiblement égale à la largeur d'une seule des chambres collectrices 18, 19 et 20 tandis que la largeur de la deuxième chambre 14 est sensiblement égale à deux fois la largeur d'une des chambres collectrices 18, 19 et 20.At the proximal ends of the collecting chambers 18, 19 and 20, the width of the first chamber 13 is substantially equal to twice the width of one of the collecting chambers 18, 19 and 20 while the width of the second chamber 14 is substantially equal to the width of only one of the collecting chambers 18, 19 and 20. Conversely, at the proximal end 101 of the manifold 1, the width of the first chamber 13 is substantially equal to the width of a only the collecting chambers 18, 19 and 20 while the width of the second chamber 14 is substantially equal to twice the width of one of the collecting chambers 18, 19 and 20.

On notera également que ladite deuxième chambre 14 est non seulement située dans l'espace formé par un prolongement longitudinal de la chambre d'aspiration 20, à laquelle elle est connectée, mais qu'elle occupe également une partie de l'espace formé par un prolongement longitudinal de la chambre d'injection 19. Ladite première chambre 13, elle, non seulement occupe une partie d'un prolongement longitudinal de la chambre d'injection 19, à laquelle elle est connectée, mais est aussi située dans un prolongement longitudinal de la chambre intermédiaire 18.It will also be noted that said second chamber 14 is not only located in the space formed by a longitudinal extension of the suction chamber 20, to which it is connected, but that it also occupies part of the space formed by a longitudinal extension of the injection chamber 19. Said first chamber 13, it not only occupies part of a longitudinal extension of the injection chamber 19, to which it is connected, but is also located in a longitudinal extension of the intermediate chamber 18.

La première chambre 13 est munie d'un des orifices d'entrée/sortie de la boite collectrice 1, dit premier orifice 11. Ladite deuxième chambre 14 est munie de l'autre desdits orifices d'entrée/sortie, dit deuxième orifice 12. Pour un évaporateur, le premier orifice 11 est conçu pour permettre l'entrée dudit premier fluide à l'intérieur de la boite collectrice 1 tandis que le deuxième orifice 12 est conçu pour permettre la sortie dudit premier fluide hors de ladite boite collectrice 1.The first chamber 13 is provided with one of the inlet / outlet ports of the manifold 1, said first orifice 11. Said second chamber 14 is provided with the other of said inlet / outlet ports, said second orifice 12. For an evaporator, the first orifice 11 is designed to allow the entry of said first fluid inside the manifold 1 while the second orifice 12 is designed to allow the output of said first fluid out of said manifold 1.

Ainsi, le premier fluide pénètre sous forme liquide dans la boite collectrice 1 par ledit premier orifice 11, circule dans les chambres collectrices 18, 19 et 20, dans le collecteur 2 et dans les tubes 300 du faisceau 30 selon un chemin de circulation déterminé par l'emplacement respectif des cloisons transversales des chambres collectrices de la boite collectrice 1 et du collecteur 2. Avantageusement, la circulation du premier fluide a lieu en série d'une rangée à l'autre et, dans chaque rangée, d'une passe à l'autre. Le premier fluide ressort de l'évaporateur 3 par le deuxième orifice 12, sous forme gazeuse, après avoir subit un changement d'état.Thus, the first fluid enters in liquid form in the manifold 1 by said first orifice 11, circulates in the collector chambers 18, 19 and 20, in the collector 2 and in the tubes 300 of the bundle 30 according to a circulation path determined by the respective location of the transverse bulkheads of the collecting chambers of the manifold 1 and the collector 2. Advantageously, the circulation of the first fluid takes place in series from one row to another and, in each row, a pass to the other. The first fluid leaves the evaporator 3 through the second orifice 12, in gaseous form, after having undergone a change of state.

Lesdits orifices d'entrée/sortie 11 et 12 sont formés par exemple d'une ouverture située sur une paroi de la boite collectrice 1. Lesdits orifices 11 et 12 présentent une dimension, dite largeur, mesurée selon une direction parallèle à la direction de la largeur de la boite collectrice. Ils sont, par exemple, de section circulaire et leur largeur représente alors un diamètre.Said inlet / outlet ports 11 and 12 are formed for example of an opening located on a wall of the header box 1. Said orifices 11 and 12 have a dimension, called width, measured in a direction parallel to the direction of the width of the collector box. They are, for example, of circular section and their width then represents a diameter.

La largeur du premier orifice 11, configuré pour permettre un passage du fluide frigorigène sous une forme liquide, est sensiblement égale à la largeur d'une des chambres collectrices 18, 19 et 20 tandis que le deuxième orifice 12, configuré pour permettre un passage du fluide frigorigène sous une forme gazeuse, est approximativement deux fois plus large que ledit premier orifice 11. De façon plus générique, le deuxième orifice d'entrée/sortie 12 présente une largeur supérieure à la largeur de la chambre d'aspiration 20.The width of the first orifice 11, configured to allow a passage of the refrigerant in a liquid form, is substantially equal to the width of one of the collecting chambers 18, 19 and 20 while the second orifice 12, configured to allow a passage of the refrigerant in a gaseous form, is approximately twice as wide as said first orifice 11. More generically, the second inlet / outlet orifice 12 has a width greater than the width of the suction chamber 20.

La largeur dudit deuxième orifice 12 pourra être comprise entre 1 et 3 fois la largeur dudit premier orifice 11. La largeur dudit premier orifice pourra être comprise en 0,8 et 1,2 fois la largeur de la chambre d'injection 19 tandis que la largeur dudit deuxième orifice pourra être limitée à deux fois la largeur de la chambre d'aspiration 20.The width of said second orifice 12 may be between 1 and 3 times the width of said first orifice 11. The width of said first orifice may be between 0.8 and 1.2 times the width of the injection chamber 19 while the width width of said second orifice may be limited to twice the width of the suction chamber 20.

On notera qu'avantageusement, notamment afin de faciliter la connexion de la boite collectrice 1 au circuit dans lequel l'échangeur est intégré, lesdits premier 11 et deuxième 12 orifices pourront être centrés sur une même droite parallèle à la direction de la largeur de la boite collectrice 1. Autrement dit, lesdits premier et deuxième orifices 11, 12 sont centrés sur une droite orthogonale à la direction d'extension longitudinale des chambres collectrices 18, 19 et 20.It will be noted that advantageously, in particular in order to facilitate the connection of the header box 1 to the circuit in which the exchanger is integrated, said first 11 and second 12 orifices may be centered on the same straight line parallel to the direction of the width of the collector box 1. In other words, said first and second orifices 11, 12 are centered on a straight line orthogonal to the direction of longitudinal extension of the collecting chambers 18, 19 and 20.

Comme illustré à la figure 4, lesdits orifices 11 et 12 pourront par exemple permettre le raccordement de la boite collectrice 1 respectivement à une conduite d'entrée 110 du fluide frigorigène et à une conduite de sortie 120 du fluide frigorigène. Alternativement, lesdits orifices pourront présenter une forme différente, par exemple sensiblement ovale ou rectangulaire.As illustrated in figure 4 , said orifices 11 and 12 may for example allow the connection of the manifold 1 respectively to an inlet pipe 110 of the refrigerant and to an outlet pipe 120 of the refrigerant. Alternatively, said orifices may have a different shape, for example substantially oval or rectangular.

A la figure 4, les orifices d'entrée/sortie 11 et 12 sont agencés sur une paroi de la boite collectrice 1 orthogonale à la direction d'extension longitudinale de ladite boite collectrice 1, par exemple sur le couvercle 5. Alternativement, comme illustré aux figures 1 et 2, les orifices d'entrée/sortie 11 et 12 pourront être agencés sur une paroi de la boite collectrice 1 parallèle à la direction d'extension longitudinale de ladite boite collectrice 1, par exemple sur la plaque collectrice 6.To the figure 4 , the inlet / outlet ports 11 and 12 are arranged on a wall of the manifold 1 orthogonal to the direction of longitudinal extension of said manifold 1, for example on the cover 5. Alternatively, as illustrated in FIGS. Figures 1 and 2 , the inlet / outlet ports 11 and 12 may be arranged on a wall of the manifold 1 parallel to the direction of longitudinal extension of said manifold 1, for example on the manifold plate 6.

Claims (13)

  1. Collecting box (1) for a heat exchanger (3), in particular of a motor vehicle air-conditioning circuit, comprising at least two inlet/outlet chambers (13, 14) of the collecting box (1) and two collecting chambers (19, 20), said collecting chambers (19, 20) being designed to be connected to the tubes (300) of a heat exchanger bundle (30) of said exchanger (3), said collecting chambers (19, 20) extending in a main longitudinal direction of extension and having a dimension, called the width, measured in a direction at right-angles to said longitudinal direction, each of the inlet/outlet chambers (13, 14) being connected to one of said collecting chambers (19, 20) and being provided with an inlet/outlet opening (11, 12) of the collecting box (1), the inlet/outlet opening (12) of one of the inlet/outlet chambers (13, 14), called the enlarged opening, having a dimension, called the width, in the direction of the width of the collecting chambers (19, 20), which is greater than the width of the collecting chamber (19, 20) to which said inlet/outlet chamber (13, 14) is connected, characterized in that the collecting box (1) comprises an additional collecting chamber (18) and has a distal end (102) and a proximal end (101) and extends in a main longitudinal direction of extension between said distal end (102) and said proximal end (101), wherein said inlet/outlet chambers (13, 14) are arranged in the collecting box (1) between the proximal end (101) of the collecting box (1) and the proximal ends of the collecting chambers (18, 19, 20).
  2. Collecting box (1) according to any one of the preceding claims, wherein the collecting chambers (18, 19, 20) comprise introduction openings (21) for the tubes (300) having a dimension, called the length, which is measured in the direction of the width of the collecting chambers (18, 19, 20), said introduction openings (21) for the tubes (300) having the same length.
  3. Collecting box (1) according to any one of the preceding claims, wherein said inlet/outlet chambers (13, 14) are located in the region of a longitudinal end of the collecting chambers (18, 19, 20).
  4. Collecting box (1) according to any one of the preceding claims, wherein the collecting chambers (18, 19, 20) all have an identical width.
  5. Collecting box (1) according to any one of the preceding claims, wherein the two inlet/outlet openings (11, 12) of the collecting box (1) are centred on the same straight line at right-angles to the longitudinal direction of extension of the collecting chambers (18, 19, 20).
  6. Collecting box (1) according to any one of the preceding claims, wherein the width of the enlarged inlet/outlet opening (12) is between 1 and 3 times the width of the other of said inlet/outlet openings (11).
  7. Collecting box (1) according to Claim 6, wherein the width of the other of said inlet/outlet openings (11) is between 0.8 and 1.2 times the width of the collecting chamber (19, 20) to which the inlet/outlet chamber (13, 14) provided with said other of the inlet/outlet openings (11) is connected.
  8. Collecting box (1) according to any one of the preceding claims, wherein one of the inlet/outlet chambers (13, 14) at least partially occupies a space which is formed by a longitudinal extension of a collecting chamber (18, 19, 20) which is adjacent to the inlet/outlet chamber to which it is connected.
  9. Collecting box (1) according to any one of the preceding claims, wherein the inlet/outlet chambers (13, 14) have shapes and/or contours which are complementary to and/or fit into a width of the collecting box (21), said width of the collecting box (1) being measured in a direction parallel to the direction of the width of the collecting chambers (18, 19, 20).
  10. Collecting box (1) according to any one of the preceding claims, wherein the inlet/outlet openings (11, 12) are arranged on a face of the collecting box (1) which is at right-angles to the longitudinal direction of extension of said collecting chambers (18, 19, 20).
  11. Collecting box (1) according to any one of Claims 1 to 9, wherein the inlet/outlet openings (11, 12) are arranged on a face of the collecting box (1) which is parallel to the longitudinal direction of extension of said collecting chambers (18, 19, 20).
  12. Collecting box (1) according to any one of the preceding claims, comprising a collecting plate, which is configured to be connected to the tubes (300), and a cover.
  13. Heat exchanger (3) comprising a collecting box (1) according to any one of the preceding claims.
EP16714808.9A 2015-03-24 2016-03-24 Collecting box for a heat exchanger of a motor vehicle air-conditioning circuit, and heat exchanger comprising such a collecting box Not-in-force EP3274644B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1552440A FR3034183B1 (en) 2015-03-24 2015-03-24 COLLECTOR BOX FOR HEAT EXCHANGER OF AIR CONDITIONING CIRCUIT OF MOTOR VEHICLE AND HEAT EXCHANGER COMPRISING SUCH A COLLECTOR BOX.
PCT/EP2016/056532 WO2016151082A1 (en) 2015-03-24 2016-03-24 Collecting box for a heat exchanger of a motor vehicle air-conditioning circuit, and heat exchanger comprising such a collecting box

Publications (2)

Publication Number Publication Date
EP3274644A1 EP3274644A1 (en) 2018-01-31
EP3274644B1 true EP3274644B1 (en) 2019-03-06

Family

ID=53200154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16714808.9A Not-in-force EP3274644B1 (en) 2015-03-24 2016-03-24 Collecting box for a heat exchanger of a motor vehicle air-conditioning circuit, and heat exchanger comprising such a collecting box

Country Status (3)

Country Link
EP (1) EP3274644B1 (en)
FR (1) FR3034183B1 (en)
WO (1) WO2016151082A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09113176A (en) * 1995-09-07 1997-05-02 Modine Mfg Co Heat exchanger with adaptor
US7921558B2 (en) * 2008-01-09 2011-04-12 Delphi Technologies, Inc. Non-cylindrical refrigerant conduit and method of making same
FR2924792A1 (en) * 2008-04-17 2009-06-12 Valeo Vymeniky Tepla Heat exchanger for air conditioning motor vehicle, has fluid injecting pipe arranged in part of fluid collecting inlet case situated opposite to outlet of U-shaped channels with respect to longitudinal axis of case
DE102012202149A1 (en) * 2012-02-13 2013-08-14 Behr Gmbh & Co. Kg Connection box for climate heat exchanger system of air conditioner of vehicle, has adapter piece connected with bottom base body and/or box-base body to transmit fluid between box and connection pipe of fluid circuit of air conditioner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

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WO2016151082A1 (en) 2016-09-29
FR3034183A1 (en) 2016-09-30
EP3274644A1 (en) 2018-01-31
FR3034183B1 (en) 2018-04-27

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